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  1. /*27/7/2013 version 0.01
  2. "Inspired" by FLY program: http://martin.gleeson.com/fly
  3. *********************************************************************************
  4. * J.M. Evers 7/2013                                                             *
  5. * This is all just amateur scriblings... So no copyrights.                      *
  6. * This source code file, and compiled objects derived from it,                  *
  7. * can be used and distributed without restriction, including for commercial use *
  8. * No warrenty whatsoever                                                        *
  9. *********************************************************************************
  10. */
  11. #include "canvasdraw.h"
  12.  
  13. /******************************************************************************
  14. **  Internal Functions
  15. ******************************************************************************/
  16. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  17. void    sync_input(FILE *infile);/* proceed with inputfile */
  18. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  19. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  20. int     get_token(FILE *infile); /* read next char until EOL*/
  21. /*
  22. int     x2px(double x);
  23. int     y2px(double y);
  24. */
  25. double  px2x(int x);
  26. double  px2y(int y);
  27. double  get_real(FILE *infile,int last); /* read a value; calculation and symbols allowed */
  28. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  29. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  30. char    *get_string(FILE *infile,int last); /* get the string at the end of a command */
  31. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  32. char    *convert_hex2rgb(char *hexcolor);
  33. void    add_read_canvas(int canvas_root_id,int reply_format,int reply_precision);
  34. void    make_js_include(int canvas_root_id);
  35. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  36. FILE    *js_include_file;
  37. FILE    *get_file(int *line_number, char **filename);
  38. FILE    *infile;    /* will be stdin */
  39. /******************************************************************************
  40. ** global
  41. ******************************************************************************/
  42. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  43. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  44. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  45. int xsize = 320;
  46. int ysize = 320;
  47. double xmin = 0.0;
  48. double xmax = 320.0;
  49. double ymin = 0.0;
  50. double ymax = 320.0;
  51. double tmax = 2;
  52. double tmin = -2;
  53. /* flag to indicate parsing of line status */
  54. int done = FALSE;
  55. int type; /* eg command number */
  56. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  57. int slider = 0;/* slider=1 : x-values ; slider=2 : y-values;slider=3 angle values */
  58. int use_affine = FALSE;
  59. int use_rotate = FALSE;
  60. int use_filled = FALSE;
  61. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  62.  
  63. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  64.  
  65. /******************************************************************************
  66. ** Main Program
  67. ******************************************************************************/
  68. int main(int argc, char *argv[]){
  69.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  70.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  71.     infile = stdin;/* read flyscript via stdin */
  72.     int i,c;
  73.     double double_data[MAX_INT+1];
  74.     int int_data[MAX_INT+1];
  75.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  76.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  77.     int use_axis = FALSE;
  78.     int use_axis_numbering = FALSE;
  79.     int use_pan_and_zoom = FALSE;
  80.     int use_safe_eval = FALSE; /* if true, add just once : js function to evaluate userinput values for plotting etc */
  81.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  82.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  83.     int line_width = 1;
  84.     int decimals = 2;
  85.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  86.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  87.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  88.     int use_tooltip = FALSE;
  89.     char *tooltip_text = "Click here";
  90.     char *temp = ""; /* */
  91.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  92.     char *stroke_color = "255,0,0";
  93.     char *fill_color = "0,255,0";
  94.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  95.     char *font_color = "#00000";
  96.     char *draw_type = "points";
  97.     char *fly_font = "normal";
  98.     char *input_style = "";
  99.     char *flytext = "";
  100.     char *affine_matrix = "[1,0,0,1,0,0]";
  101.     char *function_label = "f(x)=";
  102.     int pixelsize = 1;
  103.     int reply_format = 0;
  104.     int input_cnt = 0;
  105.     int ext_img_cnt = 0;
  106.     int slider_cnt = 0;
  107.     int font_size = 12;
  108.     int dashtype[2] = { 4 , 4 };
  109.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  110.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  111.     int arrow_head = 8; /* size in px*/
  112.     int crosshair_size = 5; /* size in px*/
  113.     int plot_steps = 250;
  114.     int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange*/
  115.     int click_cnt = 1;
  116.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  117.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  118.     int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
  119.     int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc  */
  120.     int reply_precision = 100; /* used for precision of student answers / drawings */
  121.     double angle = 0.0;
  122.     int clickfillmarge = 20;
  123.     int animation_type = 9; /* == object type curve in drag library */
  124.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  125.     int use_slider_display = 0; /* in case of a slider, should we display it's value ?*/
  126.     size_t string_length = 0;
  127.     double stroke_opacity = 0.8;
  128.     double fill_opacity = 0.8;
  129.     char *URL = "http://localhost/images";
  130.     memset(buffer,'\0',MAX_BUFFER);
  131.     void *tmp_buffer = "";
  132.  
  133.     /* default writing a unzipped js-include file into wims getfile directory */
  134.     char *w_wims_session = getenv("w_wims_session");
  135.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  136.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  137.     }
  138.     int L0=strlen(w_wims_session) + 21;
  139.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  140.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  141.     mode_t process_mask = umask(0); /* check if file exists */
  142.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  143.     if( result == 0 || errno == EEXIST ){
  144.      umask(process_mask); /* be sure to set correct permission */
  145.      char *w_session = getenv("w_session");
  146.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  147.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  148.      snprintf(getfile_cmd,L1,"wims.cgi?session=%s&cmd=getfile&special_parm=%d.js",w_session,canvas_root_id);/* extension ".gz" is MANDATORY for webserver */
  149.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  150.     /* now write file into getfile dir*/
  151.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  152.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  153.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  154.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  155.     js_include_file = fopen(location,"w");/* open the file location for writing */
  156.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  157.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  158.  
  159. /* ----------------------------------------------------- */
  160. /* while more lines to process */
  161.  
  162.     while(!finished){
  163.         if(line_number>1 && found_size_command == 0){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  164.         type = get_token(infile);
  165.         done = FALSE;
  166.         /*
  167.         @canvasdraw
  168.         @will try use the same syntax as flydraw or svgdraw to paint a html5 bitmap image<br />by generating a tailor-made javascript include file: providing only the js-functionality needed to perform the job.<br />thus ensuring a minimal strain on the client browser <br />(unlike some popular 'canvas-do-it-all' libraries, who have proven to be not suitable for low-end computers found in schools...)
  169.         @General syntax <ul><li>The transparency of all objects can be controlled by command 'opacity [0-255],[0,255]'</il><li>a line based object can be controlled by command 'linewidth int'</li><li>a line based object may be dashed by using keyword 'dashed' before the object command.<br />the dashing type can be controled by command 'dashtype int,int'</li><li>a fillable object can be set fillable by starting the object command with an 'f'<br />(like frect,fcircle,ftriangle...)<br />or by using the keyword 'filled' before the object command.<br />The fill colour will be the stroke colour...(19/10/2013)</li><li> all draggable objects may have a slider for translation / rotation; several objects may be translated / rotated by a single slider</li> <li> a draggable object can be set draggable by a preceding command 'drag x/y/xy'<br />The translation can be read by javascript:read_dragdrop();The replyformat is : object_number : x-orig : y-orig : x-drag : y-drag<br />The x-orig/y-orig will be returned in maximum precision (javascript float)...<br />the x-drag/y-drag will be returned in defined 'precision' number of decimals<br />Multiple objects may be set draggable / clickable (no limit)<br /> not all flydraw objects may be dragged / clicked<br />Only draggable / clickable objects will be scaled on zoom and will be translated in case of panning</li><li> a 'onclick object' can be set 'clickable' by the preceding keyword 'onclick'<br />not all flydraw objects can be set clickable</li><li><b>remarks using a ';' as command separator</b><br />commands with only numeric or colour arguments may be using a ';' as command separator (in stead of a new line)<br />commands with a string argument may not use a ';' as command separator !<br />these exceptions are not really straight forward... so keep this in mind.</li></ul>
  170.         @If needed multiple interactive scripts may be used in a single webpage.<br />A function 'read_canvas()' and / or 'read_dragdrop()' can read all interactive userdata from these images.<br />The global array 'canvas_scripts' will contain all unique random "canvas_root_id" of the included scripts.<br />The included local javascript "read" functions "read_canvas%d()" and "read_dragdrop%d()" will have this "%d = canvas_root_id"<br />e.g. canvas_scripts[0] will be the random id of the first script in the page and will thus provide a function<br />fun = eval("read_canvas"+canvas_scripts[0]) to read user based drawings / inputfield in this first image.<br />The read_dragdrop is analogue.<br />Use command 'replyformat' to format the replies for an individual canvas script,<br />To read all user interactions from all included canvas scripts , use something like:<br /><em>function read_all_canvas_images(){<br />&nbsp;var script_len = canvas_scripts.length;<br />&nbsp;var draw_reply = "";<br />&nbsp;var found_result = false;<br />&nbsp;for(var p = 0 ; p < script_len ; p++){<br />&nbsp;&nbsp;var fun = eval("read_canvas"+canvas_scripts[p]);<br />&nbsp;&nbsp;if( typeof fun === 'function'){<br />&nbsp;&nbsp;&nbsp;var result = fun();<br />&nbsp;&nbsp;&nbsp;if( result&nbsp;&nbsp;&& result.length != 0){<br />&nbsp;&nbsp;&nbsp;&nbsp;if(script_len == 1 ){ return result;};<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;found_result = true;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;draw_reply = draw_reply + result + "\\n";<br />&nbsp;&nbsp;&nbsp;&nbsp;};<br />&nbsp;&nbsp;&nbsp;};<br />&nbsp;&nbsp;};<br />&nbsp;if( found_result ){return draw_reply;}else{return null;};<br />};</em>    
  171.         */
  172.         switch(type){
  173.         case END:
  174.         finished = 1;
  175.         done = TRUE;
  176.         break;
  177.         case 0:
  178.             sync_input(infile);
  179.             break;
  180.         case COMMENT:
  181.             sync_input(infile);
  182.             break;
  183.         case EMPTY:
  184.             sync_input(infile);
  185.             break;
  186.         case SIZE:
  187.             /*
  188.             @size width,height
  189.             @set canvas size in pixels
  190.             @mandatory first command
  191.             @if xrange and/or yrange is not given the range will be set to pixels :<br />xrange 0,xsize yrange 0,ysize<br />note: lower left  corner is Origin (0:0) !!! this in contrast to flydraw
  192.             */
  193.             found_size_command = 1;
  194.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  195.             ysize = (int)(abs(round(get_real(infile,1))));
  196.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  197.             xmin = 0;xmax = xsize;
  198.             ymin = 0;ymax = ysize;
  199.  
  200. /*
  201.  The sequence in which stuff is finally printed is important !!
  202.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  203. */
  204. fprintf(stdout,"\n<script type=\"text/javascript\">\
  205. if( typeof wims_status === 'undefined' ){ var wims_status = \"$status\";};\
  206. if( typeof use_dragdrop_reply === 'undefined' ){ var use_dragdrop_reply = false;};\
  207. if( typeof canvas_scripts === 'undefined' ){ var canvas_scripts = new Array();};\
  208. canvas_scripts.push(\"%d\");</script>\n\
  209. <!-- canvasdraw div and tooltip placeholder, if needed -->\n\
  210. <div tabindex=\"0\" id=\"canvas_div%d\" style=\"position:relative;width:%dpx;height:%dpx;margin-left:auto;margin-right:auto;\" ></div>\n\
  211. <div id=\"tooltip_placeholder_div%d\" style=\"display:block;position:relative;margin-left:auto;margin-right:auto;margin-bottom:4px;\">\
  212. <span id=\"tooltip_placeholder%d\" style=\"display:none;\">\n</span>\
  213. </div>\n",canvas_root_id,canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id);
  214. fprintf(stdout,"<!-- include actual object code via include file -->\n<script id=\"canvas_script%d\" type=\"text/javascript\" src=\"%s\"></script>\n",canvas_root_id,getfile_cmd);
  215. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n\
  216. \"use strict\";\n\
  217. <!-- these variables and functions must be global -->\n\
  218. var read_dragdrop%d;\
  219. var read_canvas%d;\
  220. var set_clock;\
  221. var clear_draw_area;\
  222. var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  223. var userdraw_x = [];var userdraw_y = [];var userdraw_radius = [];\n\
  224. var xsize = %d;\
  225. var ysize = %d;\
  226. var precision = 100;\
  227. var canvas_div = document.getElementById(\"canvas_div%d\");\
  228. var create_canvas%d = function(canvas_type,size_x,size_y){var cnv;if(document.getElementById(\"wims_canvas%d\"+canvas_type)){ cnv = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{try{ cnv = document.createElement(\"canvas\"); }catch(e){alert(\"Your browser does not support HTML5 CANVAS:GET FIREFOX !\");return;};canvas_div.appendChild(cnv);};cnv.width = size_x;cnv.height = size_y;cnv.style.top = 0;cnv.style.left = 0;cnv.style.position = \"absolute\";cnv.id = \"wims_canvas%d\"+canvas_type;return cnv;};\
  229. function findPosX(i){ var obj = i;var curleft = 0;if(obj.offsetParent){while(1){curleft += obj.offsetLeft;if(!obj.offsetParent){break;};obj = obj.offsetParent;};}else{if(obj.x){curleft += obj.x;};};return curleft;};function findPosY(i){var obj = i;var curtop = 0;if(obj.offsetParent){while(1){curtop += obj.offsetTop;if(!obj.offsetParent){break;};obj = obj.offsetParent;};}else{if(obj.y){curtop += obj.y;};};return curtop;};\
  230. function x2px(x){if(use_xlogscale == 0 ){return parseFloat(x*xsize/(xmax - xmin) - xsize*xmin/(xmax - xmin));}else{var x_max = Math.log(xmax)/Math.log(xlogbase);var x_min = Math.log(xmin)/Math.log(xlogbase);var x_in = Math.log(x)/Math.log(xlogbase);return x_in*xsize/(x_max - x_min) - xsize*x_min/(x_max - x_min);};};\
  231. function px2x(px){if(use_xlogscale == 0 ){return parseFloat(px*(xmax - xmin)/xsize + xmin);}else{var x_max = Math.log(xmax)/Math.log(xlogbase);var x_min = Math.log(xmin)/Math.log(xlogbase);var x_out = x_min +px*(x_max - x_min)/(xsize);return Math.pow(xlogbase,x_out);};};\
  232. function px2y(py){if(use_ylogscale == 0 ){return parseFloat(ymax - py*(ymax - ymin)/ysize);}else{var y_max = Math.log(ymax)/Math.log(ylogbase);var y_min = Math.log(ymin)/Math.log(ylogbase);var y_out = y_max +py*(y_min - y_max)/(ysize);return Math.pow(ylogbase,y_out);};};\
  233. function y2px(y){if(use_ylogscale == 0){return parseFloat(-1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin));}else{var y_max = Math.log(ymax)/Math.log(ylogbase);var y_min = Math.log(ymin)/Math.log(ylogbase);var y_in = Math.log(y)/Math.log(ylogbase);return (y_max - y_in)*ysize/(y_max - y_min);};};\
  234. function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
  235. function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
  236. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  237. function distance_to_line (r,q,x,y){var c = (y) - (-1/r)*(x);var xs = r*(c - q)/(r*r+1);var ys = (r)*(xs)+(q);return parseInt(Math.sqrt( (xs-x)*(xs-x) + (ys-y)*(ys-y) ));};\
  238. function move(obj,dx,dy){for(var p = 0 ; p < obj.x.length; p++){obj.x[p] = obj.x[p] + dx;obj.y[p] = obj.y[p] + dy;};return obj;};\
  239. function slide(obj,dx,dy){for(var p = 0 ; p < obj.x.length; p++){obj.x[p] = x2px(obj.xorg[p] + dx);obj.y[p] = y2px(obj.yorg[p] + dy);};return obj;};\
  240. var x_use_snap_to_grid = 0;var y_use_snap_to_grid = 0;var snap_x = 1;var snap_y = 1;\
  241. function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
  242. function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
  243. var xlogbase = 10;\
  244. var ylogbase = 10;\
  245. var use_xlogscale = 0;\
  246. var use_ylogscale = 0;\
  247. var x_strings = null;\
  248. var y_strings = null;\
  249. var use_pan_and_zoom = 0;\
  250. var use_jsmath = 0;\
  251. var xstart = 0;\
  252. var ystart = 0;\
  253. var unit_x=\" \";\
  254. var unit_y=\" \";",canvas_root_id,canvas_root_id,canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  255. /* default add the drag code : nearly always used ...*/
  256.   add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  257.  
  258.             break;
  259.         case XRANGE:
  260.         /*
  261.         @ xrange xmin,xmax
  262.         @ if not given: 0,xsize (eg in pixels)
  263.         */
  264.             for(i = 0 ; i<2; i++){
  265.                 switch(i){
  266.                     case 0: xmin = get_real(infile,0);break;
  267.                     case 1: xmax = get_real(infile,1);break;
  268.                     default: break;
  269.                 }
  270.             }
  271.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  272.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  273.             found_size_command++;
  274.             break;
  275.         case YRANGE:
  276.         /*
  277.         @ yrange ymin,ymax
  278.         @ if not given 0,ysize (eg in pixels)
  279.         */
  280.             for(i = 0 ; i<2; i++){
  281.                 switch(i){
  282.                     case 0: ymin = get_real(infile,0);break;
  283.                     case 1: ymax = get_real(infile,1);break;
  284.                     default: break;
  285.                 }
  286.             }
  287.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  288.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  289.             found_size_command++;
  290.             break;
  291.         case TRANGE:
  292.         /*
  293.         @ trange tmin,tmax
  294.         @ default -2,2
  295.         */
  296.             use_parametric = TRUE;
  297.             for(i = 0 ; i<2; i++){
  298.                 switch(i){
  299.                     case 0: tmin = get_real(infile,0);break;
  300.                     case 1: tmax = get_real(infile,1);break;
  301.                     default: break;
  302.                 }
  303.             }
  304.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  305.             break;
  306.         case LINEWIDTH:
  307.         /*
  308.         @ linewidth int
  309.         @ default 1
  310.         */
  311.             line_width = (int) (get_real(infile,1));
  312.             break;
  313.         case ARROWHEAD:
  314.         /*
  315.         @ arrowhead int
  316.         @ default 8 (pixels)
  317.         */
  318.             arrow_head = (int) (get_real(infile,1));
  319.             break;
  320.         case CROSSHAIRSIZE:
  321.         /*
  322.         @ crosshairsize int
  323.         @ default 10 (px)
  324.         */
  325.             crosshair_size = (int) (get_real(infile,1));
  326.             break;
  327.         case CROSSHAIR:
  328.         /*
  329.         @ crosshair x,y,color
  330.         @ draw a single crosshair point at (x;y) in color 'color'
  331.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  332.         @ may be set draggable / onclick
  333.         */
  334.             for(i=0;i<3;i++){
  335.                 switch(i){
  336.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  337.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  338.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  339.                         decimals = find_number_of_digits(precision);
  340.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,7,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  341.                         click_cnt++;reset();
  342.                         break;
  343.                     default:break;
  344.                 }
  345.             }
  346.             break;
  347.         case CROSSHAIRS:
  348.         /*
  349.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  350.         @ draw multiple crosshair points at given coordinates in color 'color'
  351.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  352.         @ may be set draggable / onclick individually (!)
  353.         */
  354.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  355.             fill_color = stroke_color;
  356.             i=0;
  357.             while( ! done ){     /* get next item until EOL*/
  358.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  359.                 if(i%2 == 0 ){
  360.                     double_data[i] = get_real(infile,0); /* x */
  361.                 }
  362.                 else
  363.                 {
  364.                     double_data[i] = get_real(infile,1); /* y */
  365.                 }
  366.                 i++;
  367.             }
  368.             decimals = find_number_of_digits(precision);
  369.             for(c=0 ; c < i-1 ; c = c+2){
  370.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,7,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],crosshair_size,crosshair_size,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  371.                 click_cnt++;
  372.             }
  373.             reset();
  374.             break;
  375.         case POINT:
  376.         /*
  377.         @ point x,y,color
  378.         @ draw a single point at (x;y) in color 'color'
  379.         @ use command 'linewidth int'  to adust size
  380.         @ may be set draggable / onclick
  381.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  382.         */
  383.             for(i=0;i<3;i++){
  384.                 switch(i){
  385.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  386.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  387.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  388.                     decimals = find_number_of_digits(precision);
  389.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,2,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  390.                     click_cnt++;break;
  391.                     default: break;
  392.                 }
  393.             }
  394.             reset();
  395.             break;
  396.         case POINTS:
  397.         /*
  398.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  399.         @ draw multiple points at given coordinates in color 'color'
  400.         @ use command 'linewidth int'  to adust size
  401.         @ may be set draggable / onclick individually (!)
  402.         */
  403.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  404.             fill_color = stroke_color;
  405.             i=0;
  406.             while( ! done ){     /* get next item until EOL*/
  407.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  408.                 if(i%2 == 0 ){
  409.                     double_data[i] = get_real(infile,0); /* x */
  410.                 }
  411.                 else
  412.                 {
  413.                     double_data[i] = get_real(infile,1); /* y */
  414.                 }
  415.                 i++;
  416.             }
  417.             decimals = find_number_of_digits(precision);
  418.             for(c = 0 ; c < i-1 ; c = c+2){
  419.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,2,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,1,0,0,0,use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  420.                 click_cnt++;
  421.             }
  422.             reset();
  423.             break;
  424.         case SEGMENTS:
  425.         /*
  426.         @ segments color,x1,y1,x2,y2,...,x_n,y_n
  427.         @ draw multiple segments at given coordinates in color 'color'
  428.         @ use command 'linewidth int'  to adust size
  429.         @ may be set draggable / onclick individually (!)
  430.         */
  431.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  432.             fill_color = stroke_color;
  433.             i=0;
  434.             while( ! done ){     /* get next item until EOL*/
  435.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  436.                 if(i%2 == 0 ){
  437.                     double_data[i] = get_real(infile,0); /* x */
  438.                 }
  439.                 else
  440.                 {
  441.                     double_data[i] = get_real(infile,1); /* y */
  442.                 }
  443.                 i++;
  444.             }
  445.             decimals = find_number_of_digits(precision);
  446.             for(c = 0 ; c < i-1 ; c = c+4){
  447.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  448.                 click_cnt++;
  449.             }
  450.             reset();
  451.             break;
  452.         case SEGMENT:
  453.         /*
  454.         @ segment x1,y1,x2,y2,color
  455.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  456.         @ may be set draggable / onclick
  457.         */
  458.             for(i=0;i<5;i++) {
  459.                 switch(i){
  460.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  461.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  462.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  463.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  464.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  465.                         decimals = find_number_of_digits(precision);
  466.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  467.                         click_cnt++;reset();
  468.                         break;
  469.                     default: break;
  470.                 }
  471.             }
  472.             break;
  473.         case LINE:
  474.         /*
  475.         @ line x1,y1,x2,y2,color
  476.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  477.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  478.         @ may be set draggable / onclick
  479.         */
  480.             for(i=0;i<5;i++){
  481.                 switch(i){
  482.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  483.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  484.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  485.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  486.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  487.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  488.                         double_data[1] = xmin;
  489.                         double_data[3] = ymax;
  490.                         double_data[0] = double_data[10];
  491.                         double_data[2] = double_data[10];
  492.                     }
  493.                     else
  494.                     {
  495.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  496.                             double_data[1] = double_data[11];
  497.                             double_data[3] = double_data[11];
  498.                             double_data[0] = ymin;
  499.                             double_data[2] = xmax;
  500.                         }
  501.                         else
  502.                         {
  503.                         /* m */
  504.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  505.                         /* q */
  506.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  507.  
  508.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  509.  
  510.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  511.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  512.                             double_data[0] = xmin;
  513.                             double_data[2] = xmax;
  514.                         }
  515.                     }
  516.                     decimals = find_number_of_digits(precision);
  517.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  518.                     click_cnt++;reset();
  519.                     break;
  520.                 }
  521.             }
  522.             break;
  523.         case HALFLINE:
  524.         /*
  525.         @ demiline x1,y1,x2,y2,color
  526.         @ alternative : halfline
  527.         @ draws a halfline starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex)
  528.         @ may be set draggable / onclick
  529.         */
  530.             for(i=0;i<5;i++){
  531.                 switch(i){
  532.                     case 0: double_data[0]= get_real(infile,0);break; /* x-values */
  533.                     case 1: double_data[1]= get_real(infile,0);break; /* y-values */
  534.                     case 2: double_data[10]= get_real(infile,0);break; /* x-values */
  535.                     case 3: double_data[11]= get_real(infile,0);break; /* y-values */
  536.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  537.                     if(double_data[0] == double_data[10]){ /* vertical halfline */
  538.                         if(double_data[1] < double_data[11]){
  539.                          double_data[3] = ymax + 1000;
  540.                         }
  541.                         else
  542.                         {
  543.                          double_data[3] = ymin - 1000;
  544.                         }
  545.                         double_data[2] = double_data[0];
  546.                     }
  547.                     else
  548.                     { /* horizontal halfline*/
  549.                      if( double_data[1] == double_data[11] ){
  550.                       if( double_data[0] < double_data[10] ){
  551.                         double_data[2] = xmax + 1000; /* halfline to the right */
  552.                       }
  553.                       else
  554.                       {
  555.                         double_data[2] = xmin - 1000; /* halfline to the left */
  556.                       }
  557.                       double_data[3] = double_data[1];
  558.                      }
  559.                      else
  560.                      {
  561.                       /* any other halfline */
  562.                       /* slope */
  563.                       double_data[12] = (double_data[11] - double_data[1])/(double_data[10] - double_data[0]);
  564.                       /* const */
  565.                       double_data[13] = double_data[1] - double_data[12]*double_data[0];
  566.                       if( double_data[0] < double_data[10] ){
  567.                        double_data[2] = double_data[2] + 1000;
  568.                       }
  569.                       else
  570.                       {
  571.                        double_data[2] = double_data[2] - 1000;
  572.                       }
  573.                       double_data[3] = double_data[12]*double_data[2] + double_data[13];
  574.                      }
  575.                     }    
  576.                     decimals = find_number_of_digits(precision);
  577.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,18,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  578.                     click_cnt++;reset();
  579.                     break;
  580.                 }
  581.             }
  582.        
  583.             break;
  584.         case HLINE:
  585.         /*
  586.         @ hline x,y,color
  587.         @ draw a horizontal line through point (x:y) in color 'color'
  588.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  589.         @ may be set draggable / onclick
  590.         */
  591.             for(i=0;i<3;i++) {
  592.                 switch(i){
  593.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  594.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  595.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  596.                     double_data[3] = double_data[1];
  597.                     decimals = find_number_of_digits(precision);
  598.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,xmin,decimals,xmax,decimals,double_data[1],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  599.                     click_cnt++;reset();
  600.                     break;
  601.                 }
  602.             }
  603.             break;
  604.         case VLINE:
  605.         /*
  606.         @ vline x,y,color
  607.         @ draw a vertical line through point (x:y) in color 'color'
  608.         @ may be set draggable / onclick
  609.         */
  610.             for(i=0;i<3;i++) {
  611.                 switch(i){
  612.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  613.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  614.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  615.                         double_data[2] = double_data[0];
  616.                         decimals = find_number_of_digits(precision);
  617.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,ymin,decimals,ymax,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  618.                         click_cnt++;reset();
  619.                     break;
  620.                 }
  621.             }
  622.             break;
  623.         case SQUARE:
  624.         /*
  625.         @ square x,y,side (px) ,color
  626.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  627.         @ use command 'fsquare x,y,side,color' for a filled square
  628.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  629.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  630.         @ may be set draggable / onclick
  631.         */
  632.             for(i=0;i<5;i++){
  633.                 switch(i){
  634.                     case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
  635.                     case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
  636.                     case 2:double_data[2] = (int) (get_real(infile,0));break; /* width in px */
  637.                     case 3:
  638.                         stroke_color = get_color(infile,1);/* name or hex color */
  639.                         decimals = find_number_of_digits(precision);
  640.                         double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
  641.                         double_data[4] = double_data[1] + -1*(ymax - ymin)*double_data[2]/ysize;
  642.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,1,[%.*f,%.*f,%.*f,%.*f],[%.*f,%.*f,%.*f,%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[3],decimals,double_data[3],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[4],decimals,double_data[4],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  643.                         click_cnt++;reset();
  644.                         break;
  645.                 }
  646.             }
  647.             break;
  648.         case ROUNDRECT:
  649.         /*
  650.         @ roundrect x1,y1,x2,y2,radius,color
  651.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  652.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  653.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  654.         @ may be set draggable / onclick
  655.         */
  656.             for(i=0;i<6;i++){
  657.                 switch(i){
  658.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  659.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  660.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  661.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  662.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  663.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  664.                         /* ensure no inverted roundrect is produced... */
  665.                         if( double_data[0] > double_data[2] ){double_data[4] = double_data[0];double_data[0] = double_data[2];double_data[2] = double_data[4];}
  666.                         if( double_data[3] > double_data[1] ){double_data[4] = double_data[1];double_data[1] = double_data[3];double_data[3] = double_data[4];}
  667.                         decimals = find_number_of_digits(precision);
  668.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,6,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  669.                         click_cnt++;reset();
  670.                     break;
  671.                 }
  672.             }
  673.             break;
  674.         case RECT:
  675.         /*
  676.         @ rect x1,y1,x2,y2,color
  677.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  678.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  679.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  680.         @ may be set draggable / onclick
  681.         */
  682.             for(i=0;i<5;i++){
  683.                 switch(i){
  684.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  685.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  686.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  687.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  688.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  689.                         decimals = find_number_of_digits(precision);
  690.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,1,[%.*f,%.*f,%.*f,%.*f],[%.*f,%.*f,%.*f,%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[2],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[3],decimals,double_data[3],line_width,line_width,line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  691.                         click_cnt++;reset();
  692.                         break;
  693.                 }
  694.             }
  695.             break;
  696.         case POLYLINE:
  697.         /*
  698.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  699.         @ may be set draggable / onclick
  700.         */
  701.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  702.             i=0;
  703.             c=0;
  704.             while( ! done ){     /* get next item until EOL*/
  705.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  706.                 for( c = 0 ; c < 2; c++){
  707.                     if(c == 0 ){
  708.                         double_data[i] = get_real(infile,0);
  709.                         i++;
  710.                     }
  711.                     else
  712.                     {
  713.                         double_data[i] = get_real(infile,1);
  714.                         i++;
  715.                     }
  716.                 }
  717.             }
  718.             /* draw path : not closed & not filled */
  719.             decimals = find_number_of_digits(precision);
  720.             fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,%s,[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  721.             click_cnt++;reset();
  722.             break;
  723.         case POLY:
  724.         /*
  725.         @ poly color,x1,y1,x2,y2...x_n,y_n
  726.         @ draw closed polygon
  727.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  728.         @ may be set draggable / onclick
  729.         */
  730.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  731.             i=0;
  732.             c=0;
  733.             while( ! done ){     /* get next item until EOL*/
  734.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  735.                 for( c = 0 ; c < 2; c++){
  736.                     if(c == 0 ){
  737.                         double_data[i] = get_real(infile,0);
  738.                         i++;
  739.                     }
  740.                     else
  741.                     {
  742.                         double_data[i] = get_real(infile,1);
  743.                         i++;
  744.                     }
  745.                 }
  746.             }
  747.             /* draw path :  closed & optional filled */
  748.                 decimals = find_number_of_digits(precision);
  749.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,5,%s,[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,double_xy2js_array(double_data,i,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  750.                 click_cnt++;reset();
  751.             break;
  752.         case ARC:
  753.         /*
  754.          @ arc xc,yc,width,height,start_angle,end_angle,color
  755.          @ can not be set "onclick" or "drag xy"
  756.          @ attention: width == height == radius in pixels
  757.          @ will not zoom in or zoom out (because radius is given in pixels an not in x/y-system !). Panning will work
  758.          @ use command 'angle' for scalable angle
  759.         */
  760.             for(i=0;i<7;i++){
  761.                 switch(i){
  762.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  763.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  764.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  765.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  766.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  767.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  768.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  769.                     /* in Shape library:
  770.                         x[0] = x[1] = xc
  771.                         y[0] = y[1] = yc
  772.                         w[0] = w[1] = radius = width = height
  773.                         h[0] = start_angle ; h[1] = end_engle
  774.                     */
  775.                         decimals = find_number_of_digits(precision);
  776.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,12,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],int_data[0],int_data[0],decimals,double_data[2],decimals,double_data[3],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  777.                         reset();
  778.                     break;
  779.                 }
  780.             }
  781.             break;
  782.         case ANGLE:
  783.         /*
  784.          @ angle xc,yc,width,start_angle,end_angle,color
  785.          @ width is in x-range
  786.          @ will zoom in/out
  787.          @ if size is controlled by command 'slider' use radians to set limits of slider.
  788.         */
  789.             for(i=0;i<7;i++){
  790.                 switch(i){
  791.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  792.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  793.                     case 2:double_data[2] = get_real(infile,0);break; /* width in pixels ! */
  794.                     case 3:double_data[3] = get_real(infile,0);break; /* start angle in degrees */
  795.                     case 4:double_data[4] = get_real(infile,0);break; /* end angle in degrees */
  796.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  797.                         decimals = find_number_of_digits(precision);
  798.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,17,[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],[%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[0],decimals,double_data[1],decimals,double_data[1],decimals,double_data[2],decimals,double_data[2],decimals,double_data[3],decimals,double_data[4],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  799.                         reset();
  800.                     break;
  801.                 }
  802.             }
  803.             break;
  804.  
  805.         case ELLIPSE:
  806.         /*
  807.         @ ellipse xc,yc,radius_x,radius_y,color
  808.         @ a ellipse with center xc/yc in x/y-range
  809.         @ radius_x and radius_y are in pixels
  810.         @ may be set draggable / onclick
  811.         @ will shrink / expand on zoom out / zoom in
  812.         */
  813.             for(i=0;i<5;i++){
  814.                 switch(i){
  815.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  816.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  817.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  818.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  819.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  820.                         decimals = find_number_of_digits(precision);
  821.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,3,[%.*f],[%.*f],[%.*f],[%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],decimals,double_data[2],decimals,double_data[3],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  822.                         click_cnt++;reset();
  823.                     break;
  824.                 }
  825.             }
  826.             break;
  827.         case DASHTYPE:
  828.         /*
  829.         @ dashtype int ,int
  830.         @ When dashed is set, the objects will be drawn with this dashtyp
  831.         @ default value "dashtype 2,2"
  832.         */
  833.             for(i=0;i<2;i++){
  834.                 switch(i){
  835.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  836.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  837.                 }
  838.             }
  839.         break;
  840.         case CIRCLE:
  841.         /*
  842.         @ circle xc,yc,width (2*r in pixels),color
  843.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  844.         @ use command 'fillcolor color' to set the fillcolor
  845.         @ may be set draggable / onclick
  846.         @ will shrink / expand on zoom out / zoom in
  847.         */
  848.             for(i=0;i<4;i++){
  849.                 switch(i){
  850.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  851.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  852.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* for zoom in/out : radius in 'dx' xrange*/
  853.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  854.                         decimals = find_number_of_digits(precision);
  855.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,13,[%.*f],[%.*f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],double_data[2],double_data[2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  856.                         click_cnt++;reset();
  857.                         break;
  858.                     default : break;
  859.                 }
  860.             }
  861.             break;
  862.  
  863.         case CIRCLES:
  864.         /*
  865.         @ circles color,xc1,yc1,r1,xc2,yc2,r2...xc_n,yc_n,r_n
  866.         @ Attention r = radius in x-range (!)
  867.         @ use command 'fillcolor color' to set the fillcolor
  868.         @ may be set draggable / onclick (individually)
  869.         @ will shrink / expand on zoom out / zoom in
  870.         */
  871.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  872.             fill_color = stroke_color;
  873.             i=1;
  874.             while( ! done ){     /* get next item until EOL*/
  875.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  876.                 switch (i%3){
  877.                  case 1:double_data[i-1] = get_real(infile,0);break; /* x */
  878.                  case 2:double_data[i-1] = get_real(infile,0);break; /* y */
  879.                  case 0:double_data[i-1] = get_real(infile,1);break; /* r */
  880.                 }
  881.                 i++;
  882.             }
  883.             decimals = find_number_of_digits(precision);
  884.             for(c = 0 ; c < i-1 ; c = c+3){
  885.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,13,[%.*f],[%.*f],[%.3f],[%.3f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+1],double_data[c+2],double_data[c+2],line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  886.                 click_cnt++;
  887.             }
  888.             reset();
  889.             break;
  890.         case RAYS:
  891.         /*
  892.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  893.          @ draw rays in color 'color' and center (xc:yc)
  894.          @ may be set draggable or onclick (every individual ray)
  895.         */
  896.             stroke_color=get_color(infile,0);
  897.             fill_color = stroke_color;
  898.             double_data[0] = get_real(infile,0);/* xc */
  899.             double_data[1] = get_real(infile,0);/* yc */
  900.             i=2;
  901.             while( ! done ){     /* get next item until EOL*/
  902.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  903.                 if(i%2 == 0 ){
  904.                     double_data[i] = get_real(infile,0); /* x */
  905.                 }
  906.                 else
  907.                 {
  908.                     double_data[i] = get_real(infile,1); /* y */
  909.                 }
  910.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  911.                 i++;
  912.             }
  913.  
  914.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  915.             decimals = find_number_of_digits(precision);
  916.             for(c=2; c<i;c = c+2){
  917.                 click_cnt++;
  918.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[c],decimals,double_data[1],decimals,double_data[c+1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  919.             }
  920.             reset();
  921.             break;
  922.  
  923.         case ARROWS:
  924.         /*
  925.         @ arrows color,head (px),x1,y1,x2,y2...x_n,y_n
  926.         @ draw single headed arrows / vectors from (x1:y1) to (x2:y2) ... (x3:y3) to (x4:y4) etc ... in color 'color'
  927.         @ use command 'linewidth int' to adjust thickness of the arrow
  928.         @ may be set draggable / onclick individually
  929.         */
  930.         fprintf(js_include_file,"\n<!-- FOUND ARROWS --> \n");
  931.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  932.             fill_color = stroke_color;
  933.             arrow_head = (int) get_real(infile,0);/* h */
  934.             i=0;
  935.             while( ! done ){     /* get next item until EOL*/
  936.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  937.                 if(i%2 == 0 ){
  938.                     double_data[i] = get_real(infile,0); /* x */
  939.                 }
  940.                 else
  941.                 {
  942.                     double_data[i] = get_real(infile,1); /* y */
  943.                 }
  944.                 i++;
  945.             }
  946.             decimals = find_number_of_digits(precision);
  947.             for(c = 0 ; c < i-1 ; c = c+4){
  948.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,8,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  949.                 click_cnt++;
  950.             }
  951.             reset();
  952.             break;
  953.         case ARROW:
  954.         /*
  955.         @ arrow x1,y1,x2,y2,h,color
  956.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  957.         @ use command 'linewidth int' to adjust thickness of the arrow
  958.         @ may be set draggable / onclick
  959.         */
  960.             for(i=0;i<6;i++){
  961.                 switch(i){
  962.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  963.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  964.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  965.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  966.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  967.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  968.                         decimals = find_number_of_digits(precision);
  969.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,8,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  970.                         click_cnt++;
  971.                         reset();
  972.                         break;
  973.                 }
  974.             }
  975.             break;
  976.         case ARROW2:
  977.         /*
  978.         @ arrow2 x1,y1,x2,y2,h,color
  979.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  980.         @ use command 'arrowhead int' to adjust the arrow head size
  981.         @ use command 'linewidth int' to adjust thickness of the arrow
  982.         @ may be set draggable / onclick
  983.         */
  984.             for(i=0;i<6;i++){
  985.                 switch(i){
  986.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  987.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  988.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  989.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  990.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  991.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  992.                         decimals = find_number_of_digits(precision);
  993.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,10,[%.*f,%.*f],[%.*f,%.*f],[%d,%d],[%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[1],decimals,double_data[3],arrow_head,arrow_head,arrow_head,arrow_head,line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  994.                         click_cnt++;reset();
  995.                         break;
  996.                 }
  997.             }
  998.             break;
  999.         case PARALLEL:
  1000.         /*
  1001.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  1002.          @ can not be set "onclick" or "drag xy"
  1003.         */
  1004.             for( i = 0;i < 8; i++ ){
  1005.                 switch(i){
  1006.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  1007.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  1008.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  1009.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  1010.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  1011.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  1012.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  1013.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  1014.                     decimals = find_number_of_digits(precision);
  1015.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,11,[%.*f,%.*f,%.*f],[%.*f,%.*f,%.*f],[%d,%d,%d],[%d,%d,%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[2],decimals,double_data[4],decimals,double_data[1],decimals,double_data[3],decimals,double_data[5],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],int_data[0],line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  1016.                     click_cnt++;reset();
  1017.                     break;
  1018.                     default: break;
  1019.                 }
  1020.             }
  1021.             break;
  1022.         case TRIANGLE:
  1023.         /*
  1024.          @triangle x1,y1,x2,y2,x3,y3,color
  1025.          @may be set draggable / onclic
  1026.         */
  1027.             for(i=0;i<7;i++){
  1028.                 switch(i){
  1029.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  1030.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  1031.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  1032.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  1033.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  1034.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  1035.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  1036.                         decimals = find_number_of_digits(precision);
  1037.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,5,%s,[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,double_xy2js_array(double_data,6,decimals),line_width,stroke_color,stroke_opacity,stroke_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  1038.                         click_cnt++;reset();
  1039.                         break;
  1040.                     default: break;
  1041.                 }
  1042.             }
  1043.             break;
  1044.         case LATTICE:
  1045.         /*
  1046.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  1047.          @can not be set "onclick" or "drag xy"
  1048.         */
  1049.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  1050.             for( i = 0; i<9; i++){
  1051.                 switch(i){
  1052.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  1053.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  1054.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  1055.                     case 3: int_data[3] = (int) -1*(get_real(infile,0));break; /* y1-values  -> y-pixels*/
  1056.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  1057.                     case 5: int_data[5] = (int) -1*(get_real(infile,0));break; /* y2-values  -> y-pixels*/
  1058.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  1059.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  1060.                     case 8: stroke_color=get_color(infile,1);
  1061.                         decimals = find_number_of_digits(precision);
  1062.                         string_length = snprintf(NULL,0,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d,%s);",STATIC_CANVAS,line_width,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix);
  1063.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1064.                         snprintf(tmp_buffer,string_length,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d,%s);",STATIC_CANVAS,line_width,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix);
  1065.                         add_to_buffer(tmp_buffer);
  1066.                     break;
  1067.                     default:break;
  1068.                 }
  1069.             }
  1070.             reset();
  1071.             break;
  1072.         case SNAPTOGRID:
  1073.         /*
  1074.          @ snaptogrid
  1075.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1076.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  1077.          @ if xminor / yminor is defined, the drawing will snap to xminor and yminor<br />use only even dividers in x/y-minor...for example<br />snaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  1078.         */
  1079.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;");
  1080.         break;
  1081.         case XSNAPTOGRID:
  1082.         /*
  1083.          @ xsnaptogrid
  1084.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1085.          @ in case of userdraw the drawn points will snap to xmajor grid
  1086.          @ if xminor is defined, the drawing will snap to xminor <br />use only even dividers in x-minor...for example<br />xsnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  1087.         */
  1088.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 0;");
  1089.         break;
  1090.         case YSNAPTOGRID:
  1091.         /*
  1092.          @ ysnaptogrid
  1093.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1094.          @ in case of userdraw the drawn points will snap to ymajor grid
  1095.          @ if yminor is defined, the drawing will snap to yminor <br />use only even dividers in y-minor...for example<br />ysnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  1096.         */
  1097.         fprintf(js_include_file,"\nx_use_snap_to_grid = 0;y_use_snap_to_grid = 1;");
  1098.         break;
  1099.         case USERINPUT:
  1100.         /*
  1101.          @ userinput function | textarea | inputfield
  1102.          @ alternative command + argment to keywords "userinput_function","userinput_textarea" and "userinput_xy"
  1103.          @ textarea and inputfield are only usable in combination with some 'userdraw draw_ type'
  1104.          @ function may be used any time (e.g. without userdraw)
  1105.          @ use command "functionlabel some_string" to define the inputfield text : default value "f(x)="
  1106.          @ use command 'strokecolor some_color' to adjust the plot / functionlabel color
  1107.          @ the userinput for the function will be corrected by a simple 'rawmath' implementation...
  1108.         */
  1109.             temp = get_string_argument(infile,1);
  1110.             if(strstr(temp,"function") != 0  || strstr(temp,"curve") != 0  || strstr(temp,"plot") != 0 ){
  1111.              if( js_function[DRAW_JSFUNCTION] != 1 ){
  1112.               add_rawmath(js_include_file);/* add simple rawmath routine to correct user input of function */
  1113.               js_function[DRAW_JSFUNCTION] = 1;
  1114.               if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1115.               add_input_jsfunction(js_include_file,canvas_root_id,input_style,function_label,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1]);
  1116.               input_cnt++;
  1117.              }
  1118.              else
  1119.              {
  1120.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  1121.               fprintf(js_include_file,"add_input_jsfunction(%d,\"%s\",\"%s\",%d,\"%s\",\"%.2f\",%d,%d,%d);\n",input_cnt,input_style,function_label,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1122.               input_cnt++;
  1123.              }
  1124.              if( use_js_math == FALSE){/* add this stuff only once...*/
  1125.               add_to_js_math(js_include_file);
  1126.               use_js_math = TRUE;
  1127.              }
  1128.              if( use_js_plot == FALSE){
  1129.               use_js_plot = TRUE;
  1130.               add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1131.              }
  1132.             }
  1133.             else
  1134.             {
  1135.              if(strstr(temp,"inputfield") != 0 ){
  1136.               if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1137.               if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1138.               use_input_xy = 1;
  1139.              }
  1140.              else
  1141.              {
  1142.               if(strstr(temp,"textarea") != 0 ){
  1143.                if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1144.                if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1145.                use_input_xy = 2;
  1146.               }
  1147.               else
  1148.               {
  1149.                 canvas_error("userinput argument may be \"function,inputfield,textarea\"");
  1150.               }
  1151.              }
  1152.             }
  1153.             break;
  1154.         case USERTEXTAREA_XY:
  1155.         /*
  1156.         @ usertextarea_xy
  1157.         @ keyword
  1158.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  1159.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  1160.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1161.         @ user drawings will not zoom on zooming (or pan on panning)
  1162.         */
  1163.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1164.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1165.             use_input_xy = 2;
  1166.             break;
  1167.         case USERINPUT_XY:
  1168.         /*
  1169.         @ userinput_xy
  1170.         @ keyword
  1171.         @ to be used in combination with command "userdraw object_type,color"
  1172.         @ if set two (or three) input fields are added to the document<br />(one for x-values , one for y-values and in case of drawing circle one for radius-values)
  1173.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1174.         @ math input is allowed (e.g something like: 1+3,2*6,1/3,sqrt(3), sin(pi/4),10^-2,log(2)...)<br />eval function is 'protected' against code injection.
  1175.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  1176.         @ user drawings will not zoom on zooming (or pan on panning)
  1177.         */
  1178.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  1179.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1180.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1181.             use_input_xy = 1;
  1182.             break;
  1183.         case FUNCTION_LABEL:
  1184.             function_label = get_string_argument(infile,1);
  1185.             break;
  1186.         case USERINPUT_FUNCTION:
  1187.         /*
  1188.         @ userinput_function
  1189.         @ keyword
  1190.         @ if set , a inputfield will be added to the page
  1191.         @ repeat keyword for more function input fields
  1192.         @ the userinput value will be plotted in the canvas
  1193.         @ this value may be read with 'read_canvas()'. <br />for do it yourself js-scripters : If this is the first inputfield in the script, it's id is canvas_input0
  1194.         @ use before this command 'userinput_function',<br />commands like 'inputstyle some_css' , 'xlabel some_description' , 'opacity int,int' , 'linewidth int' , 'dashed' and 'dashtype int,int' to modify
  1195.         @ incompatible with command 'intooltip link_text_or_image' : it uses the tooltip div for adding the inputfield
  1196.         */
  1197.             if( js_function[DRAW_JSFUNCTION] != 1 ){
  1198.              js_function[DRAW_JSFUNCTION] = 1;
  1199.              add_rawmath(js_include_file);
  1200.              if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1201.              add_input_jsfunction(js_include_file,canvas_root_id,input_style,function_label,input_cnt,stroke_color,stroke_opacity,line_width,use_dashed,dashtype[0],dashtype[1]);
  1202.              input_cnt++;
  1203.             }
  1204.             else
  1205.             {
  1206.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  1207.              fprintf(js_include_file,"add_input_jsfunction(%d,\"%s\",\"%s\",%d,\"%s\",\"%.2f\",%d,%d,%d);\n",input_cnt,input_style,function_label,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1208.              input_cnt++;
  1209.             }
  1210.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1211.              add_to_js_math(js_include_file);
  1212.              use_js_math = TRUE;
  1213.             }
  1214.             if( use_js_plot == FALSE){
  1215.              use_js_plot = TRUE;
  1216.              add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1217.             }
  1218.             break;
  1219.         case USERDRAW:
  1220.         /*
  1221.         @ userdraw object_type,color
  1222.         @ implemented object_type: <ul><li>point</li><li>points</li><li>crosshair</li><li>crosshairs</li><li>line</li><li>lines</li><li>vline</li><li>vlines</li><li>hline</li><li>hlines</li><li>demiline</li><li>demilines</li><li>segment</li><li>segments</li><li>polyline</li><li>circle</li><li>circles</li><li>arrow</li><li>arrow2 (double arrow)</li><li>arrows</li><li>arrows2 (double arrows)</li><li>triangle</li><li>polygon</li><li>poly[3-9]</li><li>rect</li><li>roundrect</li><li>rects</li><li>roundrects</li><li>freehandline</li><li>freehandlines</li><li>path</li><li>paths</li><li>text</li><li>arc</li><li>arcs</li><li>input<br/>place a single inputfield on 'canvas'<br />use commands 'inputstyle' for css styling: use command 'linewidth' for adjusting the input field size (default 1)</li><li>inputs<br/>place multiple inputfield : placing inputfields on top of each other is not possible</li></ul>
  1223.         @ note: mouselisteners are only active if "$status != done " (eg only drawing in an active/non-finished exercise) <br /> to overrule use command/keyword "status" (no arguments required)
  1224.         @ note: object_type text: Any string or multiple strings may be placed anywhere on the canvas.<br />while typing the background of every typed char will be lightblue..."backspace / delete / esc" will remove typed text.<br />You will need to hit "enter" to add the text to the array "userdraw_txt()" : lightblue background will disappear<br />Placing the cursor somewhere on a typed text and hitting "delete/backspace/esc" , a confirm will popup asking to delete the selected text.This text will be removed from the "userdraw_txt()" answer array.<br />Use commands 'fontsize' and 'fontfamily' to control the text appearance
  1225.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  1226.         @ note: all objects will be removed -after a javascript confirm box- when clicked on an object point with middle or right mouse butten (e.g. event.which != 1 : all buttons but left)
  1227.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  1228.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  1229.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  1230.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  1231.         @ may be combined with keyword 'userinput_xy' or
  1232.         @ note: when zooming / panning after a drawing, the drawing will NOT be zoomed / panned...this is a "design" flaw and not a feature <br />To avoid trouble do not use zooming / panning together width userdraw.!
  1233.         */
  1234.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  1235.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  1236.             }
  1237.             reply_precision = precision;
  1238.             use_userdraw = TRUE;
  1239.             fprintf(js_include_file,"\n<!-- begin userdraw mouse events -->\nuserdraw_x = new Array();userdraw_y = new Array();userdraw_radius = new Array();var xy_cnt=0;var canvas_userdraw = create_canvas%d(%d,xsize,ysize);var context_userdraw = canvas_userdraw.getContext(\"2d\");var use_dashed = %d;if(use_dashed == 1){if( context_userdraw.setLineDash ){context_userdraw.setLineDash([%d,%d]);}else{if(context_userdraw.mozDash){context_userdraw.mozDash = [%d,%d];};};};if(wims_status != \"done\"){canvas_div.addEventListener(\"mousedown\",user_draw,false);canvas_div.addEventListener(\"mousemove\",user_drag,false);canvas_div.addEventListener(\"touchstart\",user_draw,false);canvas_div.addEventListener(\"touchmove\",user_drag,false);}\n<!-- end userdraw mouse events -->",canvas_root_id,DRAW_CANVAS,use_dashed,dashtype[0],dashtype[1],dashtype[0],dashtype[1]);
  1240.             draw_type = get_string_argument(infile,0);
  1241.             stroke_color = get_color(infile,1);
  1242.             if( strcmp(draw_type,"point") == 0 ){
  1243.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1244.                 if(reply_format == 0 ){reply_format = 8;}
  1245.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1246.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1247.                 if(use_input_xy == 1){
  1248.                     add_input_circle(js_include_file,1,1);
  1249.                     add_input_xy(js_include_file,canvas_root_id);
  1250.                 }
  1251.                 add_js_points(js_include_file,1,draw_type,line_width,line_width,stroke_color,stroke_opacity,1,stroke_color,stroke_opacity,0,1,1);
  1252.             }
  1253.             else
  1254.             if( strcmp(draw_type,"points") == 0 ){
  1255.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1256.                 if(reply_format == 0 ){reply_format = 8;}
  1257.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1258.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1259.                 if(use_input_xy == 1){
  1260.                     add_input_circle(js_include_file,1,2);
  1261.                     add_input_xy(js_include_file,canvas_root_id);
  1262.                 }
  1263.                 add_js_points(js_include_file,2,draw_type,line_width,line_width,stroke_color,stroke_opacity,1,stroke_color,stroke_opacity,0,1,1);
  1264.             }
  1265.             else
  1266.             if( strcmp(draw_type,"segment") == 0 ){
  1267.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1268.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1269.                 if(reply_format == 0){reply_format = 11;}
  1270.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1271.                 if(use_input_xy == 1){
  1272.                     add_input_segment(js_include_file,1);
  1273.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1274.                 }
  1275.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1276.             }
  1277.             else
  1278.             if( strcmp(draw_type,"polyline") == 0 ){
  1279.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  1280.                 if(reply_format == 0){reply_format = 23;}
  1281.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1282.                 if( use_input_xy == 1 ){
  1283.                     add_input_polyline(js_include_file);
  1284.                     add_input_xy(js_include_file,canvas_root_id);
  1285.                 }
  1286.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1287.             }
  1288.             else
  1289.             if( strcmp(draw_type,"segments") == 0 ){
  1290.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1291.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1292.                 if(reply_format == 0){reply_format = 11;}
  1293.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1294.                 if(use_input_xy == 1){
  1295.                     add_input_segment(js_include_file,2);
  1296.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1297.                 }
  1298.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1299.             }
  1300.             else
  1301.             if( strcmp(draw_type,"circle") == 0 ){
  1302.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1303.                 if(reply_format == 0){reply_format = 10;}
  1304.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1305.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1306.                 if(use_input_xy == 1){
  1307.                     add_input_circle(js_include_file,2,1);
  1308.                     add_input_xyr(js_include_file,canvas_root_id);
  1309.                 }
  1310.                 add_js_circles(js_include_file,1,draw_type,line_width,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1311.             }
  1312.             else
  1313.             if( strcmp(draw_type,"circles") == 0 ){
  1314.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1315.                 if(reply_format == 0){reply_format = 10;}
  1316.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1317.                 add_js_circles(js_include_file,2,draw_type,line_width,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1318.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1319.                 if(use_input_xy == 1){
  1320.                     add_input_circle(js_include_file,2,2);
  1321.                     add_input_xyr(js_include_file,canvas_root_id);
  1322.                 }
  1323.             }
  1324.             else
  1325.             if(strcmp(draw_type,"crosshair") == 0 ){
  1326.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1327.                 if(reply_format == 0){reply_format = 8;}
  1328.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1329.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1330.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1331.                 if(use_input_xy == 1){
  1332.                     add_input_crosshair(js_include_file,1);
  1333.                     add_input_xy(js_include_file,canvas_root_id);
  1334.                 }
  1335.             }
  1336.             else
  1337.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1338.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1339.                 if(reply_format == 0){reply_format = 8;}
  1340.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1341.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1342.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1343.                 if(use_input_xy == 1){
  1344.                     add_input_crosshair(js_include_file,2);
  1345.                     add_input_xy(js_include_file,canvas_root_id);
  1346.                 }
  1347.             }
  1348.             else
  1349.             if(strcmp(draw_type,"freehandline") == 0 ){
  1350.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1351.                 if(reply_format == 0){reply_format = 6;}
  1352.                 add_js_paths(js_include_file,1,draw_type,line_width,0,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1353.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1354.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1355.             }
  1356.             else
  1357.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1358.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1359.                 if(reply_format == 0){reply_format = 6;}
  1360.                 add_js_paths(js_include_file,2,draw_type,line_width,0,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1361.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1362.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1363.             }
  1364.             else
  1365.             if(strcmp(draw_type,"path") == 0 ){
  1366.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1367.                 if(reply_format == 0){reply_format = 6;}
  1368.                 add_js_paths(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1369.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1370.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1371.             }
  1372.             else
  1373.             if(strcmp(draw_type,"paths") == 0 ){
  1374.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1375.                 if(reply_format == 0){reply_format = 6;}
  1376.                 add_js_paths(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1377.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1378.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1379.             }
  1380.             else
  1381.             if(strcmp(draw_type,"arrows") == 0 ){
  1382.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1383.                 if(reply_format == 0){reply_format = 11;}
  1384.                 add_js_arrows(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1385.                 if(use_input_xy == 1){
  1386.                     add_input_arrow(js_include_file,2);
  1387.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1388.                 }
  1389.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1390.             }
  1391.             else
  1392.             if(strcmp(draw_type,"arrows2") == 0 ){
  1393.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1394.                 if(reply_format == 0){reply_format = 11;}
  1395.                 add_js_arrows(js_include_file,2,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1396.                 if(use_input_xy == 1){
  1397.                     add_input_arrow(js_include_file,1);
  1398.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1399.                 }
  1400.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1401.             }
  1402.             else
  1403.             if(strcmp(draw_type,"arrow2") == 0 ){
  1404.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1405.                 if(reply_format == 0){reply_format = 11;}
  1406.                 add_js_arrows(js_include_file,1,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1407.                 if(use_input_xy == 1){
  1408.                     add_input_arrow(js_include_file,1);
  1409.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1410.                 }
  1411.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1412.             }
  1413.             else
  1414.             if(strcmp(draw_type,"arrow") == 0 ){
  1415.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1416.                 if(reply_format == 0){reply_format = 11;}
  1417.                 add_js_arrows(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1418.                 if(use_input_xy == 1){
  1419.                     add_input_arrow(js_include_file,1);
  1420.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1421.                 }
  1422.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1423.             }
  1424.             else
  1425.             if(strcmp(draw_type,"polygon") == 0){
  1426.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1427.                 if(reply_format == 0){reply_format = 2;}
  1428.                 add_js_poly(js_include_file,-1,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1429.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1430.                 if(use_input_xy == 2){
  1431.                   add_textarea_polygon(js_include_file);
  1432.                   add_textarea_xy(js_include_file,canvas_root_id);
  1433.                 }
  1434.             }
  1435.             else
  1436.             if(strncmp(draw_type,"poly",4) == 0){
  1437.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1438.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1439.                 if(reply_format == 0){reply_format = 2;}
  1440.                 add_js_poly(js_include_file,(int) (draw_type[4]-'0'),draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1441.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1442.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1443.             }
  1444.             else
  1445.             if(strcmp(draw_type,"triangle") == 0){
  1446.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1447.                 if(reply_format == 0){reply_format = 2;}
  1448.                 add_js_poly(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1449.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1450.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1451.             }
  1452.             else
  1453.             if( strcmp(draw_type,"hline") == 0 ){
  1454.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1455.                 if(reply_format == 0){reply_format = 11;}
  1456.                 add_js_hlines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1457.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1458.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1459.             }
  1460.             else
  1461.             if( strcmp(draw_type,"hlines") == 0 ){
  1462.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1463.                 if(reply_format == 0){reply_format = 11;}
  1464.                 add_js_hlines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1465.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1466.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1467.             }
  1468.             else
  1469.             if( strcmp(draw_type,"vline") == 0 ){
  1470.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1471.                 if(reply_format == 0){reply_format = 11;}
  1472.                 add_js_hlines(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1473.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1474.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1475.             }
  1476.             else
  1477.             if( strcmp(draw_type,"vlines") == 0 ){
  1478.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1479.                 if(reply_format == 0){reply_format = 11;}
  1480.                 add_js_hlines(js_include_file,4,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1481.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1482.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1483.             }
  1484.             else
  1485.             if( strcmp(draw_type,"line") == 0 ){
  1486.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1487.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1488.                 if(reply_format == 0){reply_format = 11;}
  1489.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1490.                 if( use_input_xy == 1 ){
  1491.                     add_input_line(js_include_file,1);
  1492.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1493.                 }
  1494.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1495.             }
  1496.             else
  1497.             if( strcmp(draw_type,"lines") == 0 ){
  1498.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1499.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1500.                 if(reply_format == 0){reply_format = 11;}
  1501.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1502.                 if( use_input_xy == 1 ){
  1503.                     add_input_line(js_include_file,2);
  1504.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1505.                 }
  1506.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1507.             }
  1508.             else
  1509.             if( strcmp(draw_type,"demilines") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1510.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1511.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1512.                 if(reply_format == 0){reply_format = 11;}
  1513.                 add_js_demilines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1514.                 if( use_input_xy == 1 ){
  1515.                     add_input_demiline(js_include_file,2);
  1516.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1517.                 }
  1518.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1519.             }
  1520.             else
  1521.             if( strcmp(draw_type,"demiline") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1522.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1523.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1524.                 if(reply_format == 0){reply_format = 11;}
  1525.                 add_js_demilines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1526.                 if( use_input_xy == 1 ){
  1527.                     add_input_demiline(js_include_file,1);
  1528.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1529.                 }
  1530.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1531.             }
  1532.             else
  1533.             if( strcmp(draw_type,"rects") == 0){
  1534.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1535.                 if(reply_format == 0){reply_format = 2;}
  1536.                 add_js_rect(js_include_file,2,0,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1537.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1538.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1539.             }
  1540.             else
  1541.             if( strcmp(draw_type,"roundrects") == 0){
  1542.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1543.                 if(reply_format == 0){reply_format = 2;}
  1544.                 add_js_rect(js_include_file,2,1,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1545.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1546.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1547.             }
  1548.             else
  1549.             if( strcmp(draw_type,"rect") == 0){
  1550.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1551.                 if(reply_format == 0){reply_format = 2;}
  1552.                 add_js_rect(js_include_file,1,0,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1553.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1554.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1555.             }
  1556.             else
  1557.             if( strcmp(draw_type,"roundrect") == 0){
  1558.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1559.                 if(reply_format == 0){reply_format = 2;}
  1560.                 add_js_rect(js_include_file,1,1,draw_type,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1561.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1562.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1563.             }
  1564.             else
  1565.             if( strcmp(draw_type,"arcs") == 0){
  1566.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1567.                 if(reply_format == 0){reply_format = 25;}
  1568.                 add_js_arc(js_include_file,canvas_root_id,2,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1569.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1570.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1571.             }
  1572.             else
  1573.             if( strcmp(draw_type,"arc") == 0){
  1574.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1575.                 if(reply_format == 0){reply_format = 25;}
  1576.                 add_js_arc(js_include_file,canvas_root_id,1,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_dashed,dashtype[0],dashtype[1]);
  1577.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1578.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1579.             }
  1580.             else
  1581.             if( strcmp(draw_type,"text") == 0){
  1582.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1583.                 if(reply_format == 0){reply_format = 17;}
  1584.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,font_color,stroke_opacity);
  1585.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1586.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1587.             }
  1588.             else
  1589.             if( strcmp(draw_type,"inputs") == 0){
  1590.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1591.                 if(reply_format == 0){reply_format = 27;}
  1592.                 add_js_inputs(js_include_file,canvas_root_id,2,input_cnt,input_style,line_width);
  1593.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1594.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1595.             }
  1596.             else
  1597.             if( strcmp(draw_type,"input") == 0){
  1598.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1599.                 if(reply_format == 0){reply_format = 27;}
  1600.                 add_js_inputs(js_include_file,canvas_root_id,1,input_cnt,input_style,line_width);
  1601.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1602.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1603.             }
  1604.             else
  1605.             {
  1606.                 canvas_error("unknown drawtype or typo? ");
  1607.             }
  1608.             reset();
  1609.         break;
  1610.         case PLOTSTEPS:
  1611.             /*
  1612.              @ plotsteps a_number
  1613.              @ default 150
  1614.              @ use with care !
  1615.             */
  1616.             plot_steps = (int) (get_real(infile,1));
  1617.             break;
  1618.         case FONTSIZE:
  1619.         /*
  1620.          @fontsize font_size
  1621.          @default value 12
  1622.         */
  1623.             font_size = (int) (get_real(infile,1));
  1624.             break;
  1625.         case FONTCOLOR:
  1626.         /*
  1627.          @fontcolor color
  1628.          @color: hexcolor or colorname
  1629.          @default: black
  1630.          @example usage: x/y-axis text
  1631.         */
  1632.             font_color = get_color(infile,1);
  1633.             break;
  1634.         case ANIMATE:
  1635.         /*
  1636.          @animate type
  1637.          @REMOVED : this should be done with a slider
  1638.          @type may be "point" (nothing else , yet...)
  1639.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1640.          @will animate a point on the next plot/curve command
  1641.          @the curve will not be draw
  1642.          @moves repeatedly from xmin to xmax
  1643.         */
  1644.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1645.             break;
  1646.         case LEVELCURVE:
  1647.         /*
  1648.         @levelcurve color,expression in x/y,l1,l2,...
  1649.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1650.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1651.         @every individual level curve may be set 'onclick / drag xy' <br />e.g. every single level curve (l1,l2,l3...l_n) has a unique identifier
  1652.         @note : the arrays for holding the javascript data are limited in size
  1653.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1654.         */
  1655.             fill_color = get_color(infile,0);
  1656.             char *fun1 = get_string_argument(infile,0);
  1657.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1658.             i = 0;
  1659.             done = FALSE;
  1660.             while( !done ){
  1661.              double_data[i] = get_real(infile,1);
  1662.              i++;
  1663.             }
  1664.             for(c = 0 ; c < i; c++){
  1665.              fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,16,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,eval_levelcurve(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision,double_data[c]),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  1666.              click_cnt++;
  1667.             }
  1668.             reset();
  1669.             break;
  1670.         case TRACE_JSCURVE:
  1671.         /*
  1672.          @trace_jscurve some_math_function
  1673.          @will use a crosshair to trace the jsmath curve
  1674.          @two inputfields will display the current x/y-values (numerical evaluation by javascript)
  1675.          @default labels 'x' and 'y'<br />the commands 'xlabel some_x_axis_name' and 'ylabel some_y_axis_name' will set the label for the input fields
  1676.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1677.          @the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x in stead of 2x etc etc<br />no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  1678.         */
  1679.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1680.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1681.             if( use_js_math == FALSE){
  1682.                 add_to_js_math(js_include_file);
  1683.                 use_js_math = TRUE;
  1684.             }
  1685.             add_trace_js_mouse(js_include_file,TRACE_CANVAS,canvas_root_id,stroke_color,get_string(infile,1),font_size,stroke_opacity,line_width,crosshair_size);
  1686.             break;
  1687.         case JSMATH:
  1688.         /*
  1689.             @jsmath some_math_function
  1690.             @will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  1691.             @default labels 'x' and 'y'<br />the commands 'xlabel some_x_axis_name' and 'ylabel some_y_axis_name' will set the label for the input fields
  1692.             @example: jsmath sin(x^2)
  1693.             @the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x in stead of 2x etc etc<br />no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  1694.         */
  1695.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1696.             if( use_js_math == FALSE){
  1697.                 add_to_js_math(js_include_file);
  1698.                 use_js_math = TRUE;
  1699.             }
  1700.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1701.             break;
  1702.         case JSCURVE:
  1703.         /*
  1704.          @jscurve color,formula(x)
  1705.          @your function will be plotted by the javascript engine of the client browser.
  1706.          @use only basic math in your curve:<br /> sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e
  1707.          @use parenthesis and rawmath : use 2*x in stead of 2x ; use 2^(sin(x))...etc etc<br />use error console to debug any errors...
  1708.          @Attention : last "precision" command in the canvasdraw script determines the calculation precision of the javascript curve plot !
  1709.          @no validity check is done by wims.
  1710.          @zooming & panning are implemented :<br />use command 'zoom color' for mouse driven zooming<br />or use keyword 'setlimits' for inputfields setting xmin/xmax, ymin/ymax
  1711.          @use command 'trace_jscurve formula(x)` for tracing
  1712.          @use commmand 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  1713.          @can not be set draggable / onclick (yet)
  1714.          @commands plotjump / plotstep are not active for 'jscurve'
  1715.         */
  1716.             stroke_color = get_color(infile,0);
  1717.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1718.                 add_to_js_math(js_include_file);
  1719.                 use_js_math = TRUE;
  1720.             }
  1721.             if( use_js_plot == FALSE){
  1722.                 use_js_plot = TRUE;
  1723.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1724.             }
  1725.             temp = get_string_argument(infile,1);
  1726.             string_length = snprintf(NULL,0,  "jsplot(%d,\"%s\",%d,\"%s\",%.2f,%d,%d,%d); ",JSPLOT_CANVAS+use_js_plot,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1727.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1728.             snprintf(tmp_buffer,string_length,"jsplot(%d,\"%s\",%d,\"%s\",%.2f,%d,%d,%d); ",JSPLOT_CANVAS+use_js_plot,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1729.             add_to_buffer(tmp_buffer);
  1730.             use_js_plot++; /* we need to create multiple canvasses, so we may zoom and pan ?? */
  1731.  
  1732.         break;
  1733.         case CURVE:
  1734.         /*
  1735.          @curve color,formula(x)
  1736.          @plot color,formula(x)
  1737.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1738.          @use command "precision" to increase the number of digits of the plotted points
  1739.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1740.          @may be set draggable / onclick
  1741.         */
  1742.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1743.                 use_parametric = FALSE;
  1744.                 stroke_color = get_color(infile,0);
  1745.                 char *fun1 = get_string_argument(infile,0);
  1746.                 char *fun2 = get_string_argument(infile,1);
  1747.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1748.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,%d,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,animation_type,eval_parametric(xsize,ysize,fun1,fun2,xmin,xmax,ymin,ymax,tmin,tmax,plot_steps,precision),2*line_width,2*line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  1749.                 click_cnt++;
  1750.             }
  1751.             else
  1752.             {
  1753.                 stroke_color = get_color(infile,0);
  1754.                 char *fun1 = get_string_argument(infile,1);
  1755.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1756.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,%d,%s,[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,animation_type,eval(xsize,ysize,fun1,xmin,xmax,ymin,ymax,plot_steps,precision),line_width,line_width,line_width,stroke_color,stroke_opacity,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  1757.                 click_cnt++;
  1758.             }
  1759.             animation_type = 9;/* reset to curve plotting without animation */
  1760.             reset();
  1761.             break;
  1762.         case FLY_TEXT:
  1763.         /*
  1764.         @ text fontcolor,x,y,font,text_string
  1765.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1766.         @ use command 'fontsize' to increase base fontsize for these keywords
  1767.         @ may be set "onclick" or "drag xy"
  1768.         @ backwards compatible with flydraw
  1769.         @ unicode supported: text red,0,0,huge,\\u2232
  1770.         @ use command 'string' combined with 'fontfamily' for a more fine grained control over html5 canvas text element
  1771.         @ Avoid  mixing old flydraw commands 'text' 'textup' with new canvasdraw commands 'string' stringup'<br />If the fontfamily was set completely like "fontfamily italic 24px Ariel".<br />In that case reset 'fontfamily' to something lke 'fontfamily Ariel' before the old flydraw commands.
  1772.         */
  1773.             for(i = 0; i < 5 ;i++){
  1774.                 switch(i){
  1775.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1776.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1777.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1778.                     case 3: fly_font = get_string_argument(infile,0);
  1779.                             if(strcmp(fly_font,"giant") == 0){
  1780.                                 font_size = (int)(font_size + 24);
  1781.                             }
  1782.                             else
  1783.                             {
  1784.                                 if(strcmp(fly_font,"huge") == 0){
  1785.                                     font_size = (int)(font_size + 14);
  1786.                                 }
  1787.                                 else
  1788.                                 {
  1789.                                     if(strcmp(fly_font,"large") == 0){
  1790.                                         font_size = (int)(font_size + 6);
  1791.                                         }
  1792.                                         else
  1793.                                         {
  1794.                                             if(strcmp(fly_font,"small") == 0){
  1795.                                                 font_size = (int)(font_size - 4);
  1796.                                                 if(font_size<0){font_size = 8;}
  1797.                                         }
  1798.                                     }
  1799.                                 }
  1800.                             }
  1801.                             break; /* font_size ! */
  1802.                     case 4:
  1803.                         temp = get_string_argument(infile,1);
  1804.                         decimals = find_number_of_digits(precision);
  1805.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,14,[%.*f],[%.*f],[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  1806.                         click_cnt++;reset();break;
  1807.                     default:break;
  1808.                 }
  1809.             }
  1810.             break;
  1811.         case FLY_TEXTUP:
  1812.         /*
  1813.          @ textup fontcolor,x,y,font,text_string
  1814.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1815.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1816.          @ use command 'fontsize' to increase base fontsize for the keywords
  1817.          @ backwards compatible with flydraw
  1818.          @ unicode supported: textup red,0,0,huge,\\u2232
  1819.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1820.          @ Avoid  mixing old flydraw commands 'text' 'textup' with new canvasdraw commands 'string' stringup'<br />If the fontfamily was set completely like "fontfamily italic 24px Ariel".<br />In that case reset 'fontfamily' to something lke 'fontfamily Ariel' before the old flydraw commands.
  1821.         */
  1822.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1823.             for(i = 0; i<5 ;i++){
  1824.                 switch(i){
  1825.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1826.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1827.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1828.                     case 3: fly_font = get_string_argument(infile,0);
  1829.                             if(strcmp(fly_font,"giant") == 0){
  1830.                                 font_size = (int)(font_size + 24);
  1831.                             }
  1832.                             else
  1833.                             {
  1834.                                 if(strcmp(fly_font,"huge") == 0){
  1835.                                     font_size = (int)(font_size + 14);
  1836.                                 }
  1837.                                 else
  1838.                                 {
  1839.                                     if(strcmp(fly_font,"large") == 0){
  1840.                                         font_size = (int)(font_size + 6);
  1841.                                         }
  1842.                                         else
  1843.                                         {
  1844.                                             if(strcmp(fly_font,"small") == 0){
  1845.                                                 font_size = (int)(font_size - 4);
  1846.                                                 if(font_size<0){font_size = 8;}
  1847.                                         }
  1848.                                     }
  1849.                                 }
  1850.                             }
  1851.                             break; /* font_size ! */
  1852.                     case 4:
  1853.                     decimals = find_number_of_digits(precision);
  1854.                     temp = get_string_argument(infile,1);
  1855.                     string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,%s);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,temp,use_rotate,angle,use_affine,affine_matrix);
  1856.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1857.                     snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,%s);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,temp,use_rotate,angle,use_affine,affine_matrix);
  1858.                     add_to_buffer(tmp_buffer);
  1859.                     break;
  1860.                     default:break;
  1861.                 }
  1862.             }
  1863.             reset();
  1864.             break;
  1865.         case FONTFAMILY:
  1866.         /*
  1867.          @ fontfamily font_description
  1868.          @ set the font family; for browsers that support it
  1869.          @ font_description: Ariel ,Courier, Helvetica etc
  1870.          @ in case commands<br /> 'string color,x,y,the string'<br /> 'stringup color,x,y,rotation,the string'<br />fontfamily can be something like:<br />italic 34px Ariel
  1871.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1872.         */
  1873.             font_family = get_string(infile,1);
  1874.             break;
  1875.         case STRINGUP:
  1876.         /*
  1877.          @ stringup color,x,y,rotation_degrees,the text string
  1878.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1879.          @ unicode supported: stringup red,0,0,45,\\u2232
  1880.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1881.  
  1882.         */
  1883.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1884.             for(i=0;i<6;i++){
  1885.                 switch(i){
  1886.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1887.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1888.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1889.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1890.                     case 4: decimals = find_number_of_digits(precision);
  1891.                             temp = get_string_argument(infile,1);
  1892.                             string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,%s);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,double_data[0],temp,use_rotate,angle,use_affine,affine_matrix);
  1893.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1894.                             snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,%s);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,double_data[0],temp,use_rotate,angle,use_affine,affine_matrix);
  1895.                             add_to_buffer(tmp_buffer);
  1896.                             break;
  1897.                     default:break;
  1898.                 }
  1899.             }
  1900.             reset();
  1901.             break;
  1902.         case STRING:
  1903.         /*
  1904.          @ string color,x,y,the text string
  1905.          @ may be set "onclick" or "drag xy"
  1906.          @ unicode supported: string red,0,0,\\u2232
  1907.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1908.         */
  1909.             for(i=0;i<5;i++){
  1910.                 switch(i){
  1911.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1912.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1913.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1914.                     case 3: decimals = find_number_of_digits(precision);
  1915.                         temp = get_string_argument(infile,1);
  1916.                         decimals = find_number_of_digits(precision);
  1917.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,14,[%.*f],[%.*f],[30],[30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,use_rotate,angle,temp,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  1918.                         click_cnt++;reset();break;
  1919.                     default:break;
  1920.                 }
  1921.             }
  1922.             break;
  1923.         case CENTERSTRING:
  1924.         /*
  1925.          @ centerstring color,y-value,the text string
  1926.          @ title color,y-value,the text string
  1927.          @ draw a string centered on the canvas at y = y-value
  1928.          @ can not set "onclick" or "drag xy" (...)
  1929.          @ unicode supported: centerstring red,5,\\u2232
  1930.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1931.         */
  1932.             if( js_function[DRAW_CENTERSTRING] != 1 ){ js_function[DRAW_CENTERSTRING] = 1;}
  1933.             for(i=0;i<3;i++){
  1934.                 switch(i){
  1935.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1936.                     case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
  1937.                     case 2: temp = get_string_argument(infile,1);
  1938.                             /* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
  1939.                             decimals = find_number_of_digits(precision);
  1940.                             string_length = snprintf(NULL,0,
  1941.                             "draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  1942.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1943.                             snprintf(tmp_buffer,string_length,"draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  1944.                             add_to_buffer(tmp_buffer);
  1945.                             break;
  1946.                     default:break;
  1947.                 }
  1948.             }
  1949.             break;
  1950.         case MATHML:
  1951.         /*
  1952.         @ mathml x1,y1,x2,y2,mathml_string
  1953.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1954.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1955.         @ if inputfields are incorporated in mathml (with id's : id='mathml0',id='mathml1',...id='mathml_n')<br />the user_input values will be read by javascript:read_mathml();<br />attention: if after this mathml-input object other user-interactions are included, these will read mathml too using "read_canvas();"
  1956.         @ If other inputfields (command input / command textarea) or userdraw is performed, the function read_canvas() will not read mathml. Use some generic function to read it....
  1957.  
  1958.         */
  1959.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1960.             for(i=0;i<5;i++){
  1961.                 switch(i){
  1962.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1963.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1964.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1965.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1966.                     case 4: decimals = find_number_of_digits(precision);
  1967.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1968.                             temp = get_string(infile,1);
  1969.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1970.                             string_length = snprintf(NULL,0,"draw_xml(%d,%d,%d,%d,%d,\"%s\",%d);\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp,onclick);
  1971.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1972.                             snprintf(tmp_buffer,string_length,"draw_xml(%d,%d,%d,%d,%d,\"%s\",%d);\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp,onclick);
  1973.                             add_to_buffer(tmp_buffer);
  1974.                             /*
  1975.                              in case inputs are present , trigger adding the read_mathml()
  1976.                              if no other reply_format is defined
  1977.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1978.                              */
  1979.                             if(strstr(temp,"mathml0") != NULL){
  1980.                              if(reply_format == 0 ){reply_format = 16;} /* no other reply type is defined */
  1981.                             }
  1982.                             break;
  1983.                     default:break;
  1984.                 }
  1985.             }
  1986.             reset();
  1987.             break;
  1988.         case HTTP:
  1989.         /*
  1990.          @http x1,y1,x2,y2,http://some_adress.com
  1991.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1992.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1993.          @can not be 'set onclick' or 'drag xy'
  1994.         */
  1995.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}
  1996.             for(i=0;i<5;i++){
  1997.                 switch(i){
  1998.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1999.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  2000.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  2001.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  2002.                     case 4: decimals = find_number_of_digits(precision);
  2003.                             temp = get_string(infile,1);
  2004.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  2005.                             string_length = snprintf(NULL,0,"draw_http(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  2006.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2007.                             snprintf(tmp_buffer,string_length,"draw_http(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  2008.                             add_to_buffer(tmp_buffer);
  2009.                     break;
  2010.                 }
  2011.             }
  2012.             reset();
  2013.             break;
  2014.         case HTML:
  2015.         /*
  2016.          @ html x1,y1,x2,y2,html_string
  2017.          @ all tags are allowed
  2018.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  2019.          @ if inputfields are incorporated  (with id's : id='mathml0',id='mathml1',...id='mathml_n')<br />the user_input values will be read by javascript:read_canvas(); <br />If other inputfields (command input / command textarea) or userdraw is performed, these values will NOT be read as well.
  2020.  
  2021.          note: uses the same code as 'mathml'
  2022.         */
  2023.             break;
  2024.         case X_AXIS_STRINGS:
  2025.         /*
  2026.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  2027.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  2028.          @ use these x-axis values in stead of default xmin...xmax
  2029.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  2030.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  2031.          @ example:<br />size 400,400<br />xrange 0,13<br />yrange -100,500<br />axis<br />xaxis 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december<br />#'xmajor' steps should be synchronised with numbers eg. "1" in this example<br />grid 1,100,grey,1,4,6,grey
  2032.          @ example:<br />size 400,400<br />xrange -5*pi,5*pi<br />yrange -100,500<br />axis<br />xaxis -4*pi:-4\\u03c0:-3*pi:-3\\u03c0:-2*pi:-2\\u03c0:-1*pi:-\\u03c0:0:0:pi:\\u03c0:2*pi:2\\u03c01:3*pi:3\\u03c0:4*pi:4\\u03c0<br />#'xmajor' steps should be synchronised with numbers eg. "1" in this example<br />grid pi,1,grey,1,3,6,grey
  2033.         */
  2034.             temp = get_string(infile,1);
  2035.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  2036.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  2037.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  2038.             use_axis_numbering = 1;
  2039.             break;
  2040.         case Y_AXIS_STRINGS:
  2041.         /*
  2042.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  2043.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  2044.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  2045.          @ use these y-axis values in stead of default ymin...ymax
  2046.          @ example:<br />size 400,400<br />yrange 0,13<br />xrange -100,500<br />axis<br />yaxis 1:january:2:february:3:march:5:may:6:june:7:july:8:august:9:september:10:october:11:november:12:december<br />#'ymajor' steps should be synchronised with numbers eg. "1" in this example<br />grid 100,1,grey,4,1,6,grey
  2047.         */
  2048.             temp = get_string(infile,1);
  2049.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  2050.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  2051.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  2052.             use_axis_numbering = 1;
  2053.             break;
  2054.  
  2055.         case AXIS_NUMBERING:
  2056.         /*
  2057.             @ axisnumbering
  2058.             @ keyword, no arguments required
  2059.         */
  2060.             use_axis_numbering = 1;
  2061.             break;
  2062.         case AXIS:
  2063.         /*
  2064.             @ axis
  2065.             @ keyword, no arguments required
  2066.  
  2067.         */
  2068.             use_axis = TRUE;
  2069.             break;
  2070.         case KILLSLIDER:
  2071.         /*
  2072.          @ killslider
  2073.          @ keyword, no arguments required
  2074.          @ ends grouping of object under a preciously defined slider
  2075.         */
  2076.             slider = 0;
  2077.             break;
  2078.         case SLIDER:
  2079.         /*
  2080.         @ slider start_value,end_value,width px,height px,type,label
  2081.         @ type: xy,x,y,angle
  2082.         @ if a value display is desired, use<br />type:xy display,x display,y display,angle radian,angle degree
  2083.         @ is a unit for x / y value display is needed, use commands 'xunit' and / or 'yunit'
  2084.         @ use commmand 'slider' before draggable/clickable objects.
  2085.         @ a slider will affect all draggable objects after the 'slider' command...<br />and can be used to group translate / rotate several objects...<br />until a next 'slider' or keyword 'killslider'
  2086.         @ amount of sliders is not limited.
  2087.         @ javascript:read_dragdrop(); will return an array with 'object_number:slider_value'
  2088.         @ type=xy: will produce a 2D 'slider' [rectangle width x heigh px] in your web page
  2089.         @ every draggable object may have it's own slider (no limit in amount of sliders)
  2090.         @ label: some slider text
  2091.         @ use fillcolor for slider ball
  2092.         @ use strokecolor for slider bar
  2093.         @ use fontfamily / fontcolor to set used fonts
  2094.         @ use opacity (only fill opacity will be used) to set transparency
  2095.         @ the slider canvas will be added to the 'tooltip div' : so incompatible with command tooltip ; setlimits etc
  2096.         */
  2097.             for(i=0; i<6 ; i++){
  2098.                 switch(i){
  2099.                     case 0: double_data[0] = get_real(infile,0);break; /* start value */
  2100.                     case 1: double_data[1] = get_real(infile,0);break; /* end value */
  2101.                     case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
  2102.                     case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
  2103.                     case 4: temp = get_string_argument(infile,0); /* type : xy,x,y,angle */
  2104.                     /* xy display*/
  2105.                     if(strstr(temp,"xy")!= 0){
  2106.                      slider = 4;
  2107.                     }
  2108.                     else
  2109.                     {
  2110.                      if(strstr(temp,"x") != 0){
  2111.                       slider = 1;
  2112.                      }
  2113.                      else
  2114.                      {
  2115.                       if(strstr(temp,"y") != 0){
  2116.                        slider = 2;
  2117.                       }
  2118.                       else
  2119.                       {
  2120.                        if(strstr(temp,"angle") != 0){ /* angle diplay radian */
  2121.                         slider = 3;
  2122.                        }
  2123.                        else
  2124.                        {
  2125.                         canvas_error("slider types may be : x , y , xy , angle");
  2126.                        }
  2127.                       }
  2128.                      }
  2129.                     }
  2130.                     if(strstr(temp,"display")!=0){
  2131.                      use_slider_display = 1; /* show x xy values in canvas window */
  2132.                     }
  2133.                     else
  2134.                     {
  2135.                      if(strstr(temp,"degree")!= 0){
  2136.                       use_slider_display = 2; /* show angle values in canvas window */
  2137.                      }
  2138.                      else
  2139.                      {
  2140.                       if(strstr(temp,"radian")!=0){
  2141.                        use_slider_display = 3; /* show radian values in canvas window */
  2142.                       }
  2143.                      }
  2144.                     }
  2145.                     if(use_slider_display != 0 && slider_cnt == 0){ /*add just once the display js-code */
  2146.                      add_slider_display(js_include_file,canvas_root_id,precision,font_size,font_color,stroke_opacity);
  2147.                     }
  2148.                     break;
  2149.                     case 5: /* some string used for slider description  */
  2150.                     slider_cnt++;
  2151.                     if(slider == 4){
  2152.                      add_xyslider(js_include_file,canvas_root_id,double_data[0],double_data[1],int_data[0],int_data[1],slider,get_string_argument(infile,1),slider_cnt,stroke_color,fill_color,line_width,fill_opacity,font_family,font_color,use_slider_display );
  2153.                     }else{
  2154.                      add_slider(js_include_file,canvas_root_id,double_data[0],double_data[1],int_data[0],int_data[1],slider,get_string_argument(infile,1),slider_cnt,stroke_color,fill_color,line_width,fill_opacity,font_family,font_color,use_slider_display);
  2155.                     }
  2156.                     break;
  2157.                 }
  2158.              }
  2159.             break;
  2160.         case SGRAPH:
  2161.         /*
  2162.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  2163.          @ primitive implementation of a 'broken scale' graph...
  2164.          @ not very versatile: only usable in combination with userdraw <br />eg no other objects will obey this "coordinate system"<br />if you want to place an object into this coordinate system, be aware that 10% or 20% of xsize and/or ysize is 'lost'.<br />Use these "formulas" to recalculate the virtual coordinates:<br />factor=0.8 in case xstart != xmin (or ystart != ymin)<br />factor=0.9 in case xstart = xmin (or ystart = ymin)<br />px_x_point = ((factor*xsize)/(xmax - xstart))*(x_point - xmax)+xsize<br />x_recalculated = px*(xmax - xmin)/xsize + $xmin<br />px_y_point = -1*factor*y_point*ysize/(ymax - ystart) + ymax*factor*ysize/(ymax - ystart)<br />y_recalculated = ymax - py*(ymax - ymin)/ysize<br />
  2165.          @ example:<br />size 400,400<br />xrange 0,10000<br />yrange 0,100<br />sgraph 9000,50,100,10,4,4,grey,blue<br />userinput_xy<br />linewidth 2<br />userdraw segments,red
  2166.         */
  2167.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  2168.             for(i = 0 ; i < 8 ;i++){
  2169.                 switch(i){
  2170.                     case 0:double_data[0] = get_real(infile,0);break;
  2171.                     case 1:double_data[1] = get_real(infile,0);break;
  2172.                     case 2:double_data[2] = get_real(infile,0);break;
  2173.                     case 3:double_data[3] = get_real(infile,0);break;
  2174.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  2175.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  2176.                     case 6:stroke_color = get_color(infile,0);break;
  2177.                     case 7:font_color = get_color(infile,1);
  2178.                     string_length = snprintf(NULL,0,"xstart = %f;\nystart = %f;\ndraw_sgraph(%d,%d,%f,%f,%d,%d,\"%s\",\"%s\",\"%s\",%f,%d);\n",double_data[0],double_data[1],GRID_CANVAS,precision,double_data[2],double_data[3],int_data[0],int_data[1],stroke_color,font_color,font_family,stroke_opacity,font_size);
  2179.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2180.                     snprintf(tmp_buffer,string_length,"xstart = %f;\nystart = %f;\ndraw_sgraph(%d,%d,%f,%f,%d,%d,\"%s\",\"%s\",\"%s\",%f,%d);\n",double_data[0],double_data[1],GRID_CANVAS,precision,double_data[2],double_data[3],int_data[0],int_data[1],stroke_color,font_color,font_family,stroke_opacity,font_size);
  2181.                     add_to_buffer(tmp_buffer);
  2182.                     break;
  2183.                     default:break;
  2184.                 }
  2185.             }
  2186.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  2187.             break;
  2188.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  2189.         /*
  2190.          @ grid step_x,step_y,gridcolor
  2191.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  2192.          @ if keywords "axis" or "axisnumbering" are set, use :<br />grid step_x,step_y,major_color,minor_x,minor_y,tics height in px,axis_color<br />minor x step = step_x / minor_x
  2193.          @ if xmin > 0 and/or ymin > 0 and zooming / panning is not activ: <br /> be aware that the x/y-axis numbering and x/y major/minor tic marks will not be visual <br /> as they are placed under the x-axis and left to the y-axis (in Quadrant II and IV)
  2194.          @ can not be set "onclick" or "drag xy"
  2195.          @ use commands 'xlabel some_string' and/or 'ylabel some_string' to label axis;<br />use command "fontsize" to adjust size (the font family is non-configurable 'italic your_fontsize px Ariel')
  2196.          @ see commands "xaxis" or "xaxistext", "yaxis" or "yaxistext" to set tailormade values on axis (the used font is set by command fontfamily; default '12px Ariel')
  2197.          @ see command "legend" to set a legend for the graph ;<br />use command "fontsize" to adjust size (the font family is non-configurable 'bold your_fontsize px Ariel')
  2198.         */
  2199.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  2200.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  2201.             for(i=0;i<4;i++){
  2202.                 switch(i){
  2203.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  2204.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  2205.                     case 2:
  2206.                     if( use_axis == TRUE ){
  2207.                         stroke_color = get_color(infile,0);
  2208.                         done = FALSE;
  2209.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  2210.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  2211.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  2212.                         fill_color = get_color(infile,1); /* used as axis_color*/
  2213.                     }
  2214.                     else
  2215.                     {
  2216.                         int_data[0] = 1;
  2217.                         int_data[1] = 1;
  2218.                         stroke_color = get_color(infile,1);
  2219.                         fill_color = stroke_color;
  2220.                     }
  2221.                     if( double_data[0] <= 0 ||  double_data[1] <= 0 ||  int_data[0] <= 0 ||  int_data[1] <= 0 ){canvas_error("major or minor tickt must be positive !");}
  2222.                     /* set snap_x snap_y values in pixels */
  2223.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  2224.                     string_length = snprintf(NULL,0,  "draw_grid%d(%d,%d,%.2f,%.*f,%.*f,%d,%d,%d,%d,\"%s\",\"%s\",%d,\"%s\",%d,%d,%d,%.2f,%d,%s,%d,%d,%d,\"%s\",%.2f);\n",canvas_root_id,GRID_CANVAS,precision,stroke_opacity,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],int_data[2],line_width,stroke_color,fill_color,font_size,font_family,use_axis,use_axis_numbering,use_rotate,angle,use_affine,affine_matrix,use_dashed,dashtype[0],dashtype[1],font_color,fill_opacity);
  2225.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2226.                     snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,%.2f,%.*f,%.*f,%d,%d,%d,%d,\"%s\",\"%s\",%d,\"%s\",%d,%d,%d,%.2f,%d,%s,%d,%d,%d,\"%s\",%.2f);\n",canvas_root_id,GRID_CANVAS,precision,stroke_opacity,decimals,double_data[0],decimals,double_data[1],int_data[0],int_data[1],int_data[2],line_width,stroke_color,fill_color,font_size,font_family,use_axis,use_axis_numbering,use_rotate,angle,use_affine,affine_matrix,use_dashed,dashtype[0],dashtype[1],font_color,fill_opacity);
  2227.                     add_to_buffer(tmp_buffer);
  2228.                     break;
  2229.                 }
  2230.             }
  2231.             reset();
  2232.             break;
  2233.         case OPACITY:
  2234.         /*
  2235.         @ opacity 0-255,0-255
  2236.         @
  2237.         */
  2238.             for(i = 0 ; i<2;i++){
  2239.                 switch(i){
  2240.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  2241.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  2242.                     default: break;
  2243.                 }
  2244.             }
  2245.             if( double_data[0] < 0 || double_data[0] > 255 || double_data[1] < 0 || double_data[1] > 255  ){ canvas_error("opacity [0 - 255] , [0 - 255]");}/* typo or non-RGB ? */
  2246.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  2247.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  2248.             break;
  2249.         case ROTATE:
  2250.         /*
  2251.          @rotate rotation_angle
  2252.          @angle in degrees
  2253.         */
  2254.             use_rotate = TRUE;
  2255.             angle = -1*(get_real(infile,1));/* -1 : to be compatible with Flydraw... */
  2256.             break;
  2257.         case KILLAFFINE:
  2258.         /*
  2259.         @ killaffine
  2260.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  2261.         */
  2262.             use_affine = FALSE;
  2263.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2264.             break;
  2265.         case AFFINE:
  2266.         /*
  2267.          @affine a,b,c,d,tx,ty
  2268.          @ defines a transformation matrix for subsequent objects
  2269.          @ use keyword 'killaffine' to end the transformation
  2270.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  2271.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  2272.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  2273.          @ a : Scales the drawings horizontally
  2274.          @ b : Skews the drawings horizontally
  2275.          @ c : Skews the drawings vertically
  2276.          @ d : Scales the drawings vertically
  2277.          @ tx: Moves the drawings horizontally in xrange coordinate system
  2278.          @ ty: Moves the drawings vertically in yrange coordinate system
  2279.          @ the data precision is 2 decimals (printf : %2.f)
  2280.         */
  2281.             for(i = 0 ; i<6;i++){
  2282.                 switch(i){
  2283.                     case 0: double_data[0] = get_real(infile,0);break;
  2284.                     case 1: double_data[1] = get_real(infile,0);break;
  2285.                     case 2: double_data[2] = get_real(infile,0);break;
  2286.                     case 3: double_data[3] = get_real(infile,0);break;
  2287.                     case 4: double_data[4] = get_real(infile,0);break;
  2288.                     case 5: double_data[5] = get_real(infile,1);
  2289.                         use_affine = TRUE;
  2290.                         string_length = snprintf(NULL,0,     "[%.2f,%.2f,%.2f,%.2f,%.2f,%.2f] ",double_data[0],double_data[1],double_data[2],double_data[3],double_data[4]*xsize/(xmax - xmin),-1*double_data[5]*ysize/(ymax - ymin));
  2291.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2292.                         snprintf(affine_matrix,string_length,"[%.2f,%.2f,%.2f,%.2f,%.2f,%.2f] ",double_data[0],double_data[1],double_data[2],double_data[3],double_data[4]*xsize/(xmax - xmin),-1*double_data[5]*ysize/(ymax - ymin));
  2293.                         break;
  2294.                     default: break;
  2295.                 }
  2296.             }
  2297.         break;
  2298.         case KILLTRANSLATION:
  2299.         /*
  2300.          killtranslation
  2301.         */
  2302.             use_affine = FALSE;
  2303.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2304.             break;
  2305.         case TRANSLATION:
  2306.         /*
  2307.          @translation tx,ty
  2308.          @will translate the next object tx in xrange and ty in yrange
  2309.          @uase command 'killtranstation' to end the command
  2310.         */
  2311.             for(i = 0 ; i<2;i++){
  2312.                 switch(i){
  2313.                     case 0: double_data[0] = get_real(infile,0);break;
  2314.                     case 1: double_data[1] = get_real(infile,1);
  2315.                         use_affine = TRUE;
  2316.                         string_length = snprintf(NULL,0, "[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2317.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2318.                         snprintf(affine_matrix,string_length,"[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2319.                         break;
  2320.                     default: break;
  2321.                 }
  2322.             }
  2323.         break;
  2324.  
  2325.         case DASHED:
  2326.         /*
  2327.         @ keyword "dashed"
  2328.         @ next object will be drawn with a dashed line
  2329.         @ change dashing scheme by using command "dashtype int,int)
  2330.         */
  2331.             use_dashed = TRUE;
  2332.             break;
  2333.         case FILLED:
  2334.         /*
  2335.         @ keyword "filled"
  2336.         @ the next 'fillable' object (only) will be filled
  2337.         @ use command "fillcolor color" to set fillcolor
  2338.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  2339.         @ use command "fill x,y,color" or "floodfill x,y,color" to fill the space around (x;y) with color <br />pixel operation implemented in javascript: use with care !
  2340.         */
  2341.             use_filled = TRUE;
  2342.             break;
  2343.         case STYLE:
  2344.         /*
  2345.          @highlight color,opacity,linewidth
  2346.          @ NOT IMPLEMENTED
  2347.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  2348.         */
  2349.             break;
  2350.         case FILLCOLOR:
  2351.         /*
  2352.         @ fillcolor colorname or #hex
  2353.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  2354.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  2355.         */
  2356.             fill_color = get_color(infile,1);
  2357.             break;
  2358.         case STROKECOLOR:
  2359.         /*
  2360.         @ strokecolor colorname or #hex
  2361.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  2362.         */
  2363.             stroke_color = get_color(infile,1);
  2364.             break;
  2365.         case BGIMAGE:
  2366.         /*
  2367.          @bgimage image_location
  2368.          @use an image as background .<br />(we use the background of 'canvas_div' )
  2369.          @the background image will be resized to match "width = xsize" and "height = ysize"
  2370.         */
  2371.         URL = get_string(infile,1);
  2372.         fprintf(js_include_file,"<!-- set background image to canvas div -->\ncanvas_div.style.backgroundImage = \"url(%s)\";canvas_div.style.backgroundSize = \"%dpx %dpx\";\n",URL,xsize,ysize);
  2373.             break;
  2374.         case BGCOLOR:
  2375.         /*
  2376.          @bgcolor colorname or #hex
  2377.          @use this color as background of the "div" containing the canvas(es)
  2378.         */
  2379.         /* [255,255,255]*/
  2380.             bgcolor = get_string(infile,1);
  2381.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  2382.                 int found = 0;
  2383.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  2384.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  2385.                         bgcolor = colors[i].hex;
  2386.                         found = 1;
  2387.                         break;
  2388.                     }
  2389.                 }
  2390.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  2391.             }
  2392.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  2393.             break;
  2394.         case COPY:
  2395.         /*
  2396.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  2397.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  2398.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  2399.         @ [filename] is the URL of the image
  2400.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2401.         @ if command 'drag x/y/xy' is set before command 'copy', the images will be draggable<br />javascript function read_canvas(); will return the x/y coordinate data in xrange/yrange of all -including non draggable- images<br />the command drag is only valuid for the next image<br />draggable / non-draggable images may be mixed
  2402.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2403.  
  2404.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2405.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  2406.         */
  2407.             for(i = 0 ; i<7;i++){
  2408.                 switch(i){
  2409.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  2410.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  2411.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  2412.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  2413.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  2414.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  2415.                     case 6: URL = get_string(infile,1);
  2416.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  2417.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  2418.                             if( drag_type > -1 ){
  2419.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2420.                                 if(reply_format == 0 ){reply_format = 20;}
  2421.                                 string_length = snprintf(NULL,0,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],ext_img_cnt,1);
  2422.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2423.                                 snprintf(tmp_buffer,string_length,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7],ext_img_cnt,1);
  2424.                                 drag_type = -1;
  2425.                                 ext_img_cnt++;
  2426.                             }
  2427.                             else
  2428.                             {
  2429.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2430.                                 /*
  2431.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  2432.                                 */
  2433.                                 string_length = snprintf(NULL,0,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7]);
  2434.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2435.                                 snprintf(tmp_buffer,string_length,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\n",URL,int_data[2],int_data[3],int_data[6],int_data[7],int_data[0],int_data[1],int_data[6],int_data[7]);
  2436.                             }
  2437.                             add_to_buffer(tmp_buffer);
  2438.                             break;
  2439.                     default: break;
  2440.                 }
  2441.             }
  2442.             reset();
  2443.             break;
  2444. /*
  2445. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2446. img     Specifies the image, canvas, or video element to use
  2447. sx      The x coordinate where to start clipping : x1 = int_data[0]
  2448. sy      The y coordinate where to start clipping : x2 = int_data[1]
  2449. swidth  The width of the clipped image : int_data[2] - int_data[0]
  2450. sheight The height of the clipped image : int_data[3] - int_data[1]
  2451. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  2452. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  2453. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  2454. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  2455. */
  2456.         case COPYRESIZED:
  2457.         /*
  2458.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  2459.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [ filename], <br />possibly resized,<br />to the region of (dx1,dy1) to (dx2,dy2) in x/y-range
  2460.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  2461.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2462.         @ if command 'drag x/y/xy' is set before command 'copy', the images will be draggable<br />javascript function read_canvas(); will return the x/y coordinate data in xrange/yrange of all -including non draggable- images<br />the command drag is only valuid for the next image<br />draggable / non-draggable images may be mixed
  2463.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2464.         */
  2465.             for(i = 0 ; i<9;i++){
  2466.                 switch(i){
  2467.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  2468.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  2469.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  2470.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  2471.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  2472.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  2473.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  2474.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  2475.                     case 8: URL = get_string(infile,1);
  2476.                             if( drag_type > -1 ){
  2477.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2478.                                 if(reply_format == 0 ){reply_format = 20;}
  2479.                                 string_length = snprintf(NULL,0,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],ext_img_cnt,1);
  2480.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2481.                                 snprintf(tmp_buffer,string_length,"drag_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,%d,%d);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],ext_img_cnt,1);
  2482.                                 drag_type = -1;
  2483.                                 ext_img_cnt++;
  2484.                             }
  2485.                             else
  2486.                             {
  2487.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2488.                                 string_length = snprintf(NULL,0,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7]);
  2489.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2490.                                 snprintf(tmp_buffer,string_length,"draw_external_image(\"%s\",%d,%d,%d,%d,%d,%d,%d,%d,0);\n",URL,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7]);
  2491.                             }
  2492.                             add_to_buffer(tmp_buffer);
  2493.                     default: break;
  2494.                 }
  2495.             }
  2496.             reset();
  2497.             break;
  2498.         case CLEARBUTTON:
  2499.         /*
  2500.          @clearbutton value
  2501.          @adds a button to clear the userdraw canvas with text 'value'
  2502.          @normally userdraw primitives have the option to use middle/right mouse button on<br /> a point of the object to remove this specific object...this clear button will remove all drawings
  2503.          @uses the tooltip placeholder div element: may not be used with command 'intooltip'
  2504.          @use command 'inputstyle' to style the button...
  2505.         */
  2506.             add_clear_button(js_include_file,canvas_root_id,input_style,get_string(infile,1));
  2507.         break;
  2508.         case INPUTSTYLE:
  2509.         /*
  2510.         @ inputstyle style_description
  2511.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  2512.         */
  2513.             input_style = get_string(infile,1);
  2514.             break;
  2515.         case INPUT:
  2516.         /*
  2517.          @ input x,y,size,editable,value
  2518.          @ to set inputfield "readonly", use editable = 0
  2519.          @ only active inputfields (editable = 1) will be read with read_canvas();
  2520.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2521.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  2522.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2523.         */
  2524.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  2525.             for(i = 0 ; i<5;i++){
  2526.                 switch(i){
  2527.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  2528.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  2529.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  2530.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2531.                     case 4:
  2532.                             temp = get_string_argument(infile,1);
  2533.                             string_length = snprintf(NULL,0,  "draw_inputs(%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],input_style,temp);
  2534.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2535.                             snprintf(tmp_buffer,string_length,"draw_inputs(%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],input_style,temp);
  2536.                             add_to_buffer(tmp_buffer);
  2537.                             input_cnt++;break;
  2538.                     default: break;
  2539.                 }
  2540.             }
  2541.             if(reply_format == 0 ){reply_format = 15;}
  2542.             reset();
  2543.             break;
  2544.         case TEXTAREA:
  2545.         /*
  2546.          @ textarea x,y,cols,rows,readonly,value
  2547.          @ may be further controlled by "inputstyle"
  2548.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2549.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2550.         */
  2551.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}
  2552.             for(i = 0 ; i<6;i++){
  2553.                 switch(i){
  2554.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  2555.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  2556.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  2557.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  2558.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2559.                     case 5: temp = get_string_argument(infile,1);
  2560.                             string_length = snprintf(NULL,0,  "draw_textareas(%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],input_style,temp);
  2561.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2562.                             snprintf(tmp_buffer,string_length,"draw_textareas(%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\");\n",canvas_root_id,input_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],input_style,temp);
  2563.                             add_to_buffer(tmp_buffer);
  2564.                             input_cnt++;break;
  2565.                     default: break;
  2566.                 }
  2567.             }
  2568.             if(reply_format == 0 ){reply_format = 15;}
  2569.             reset();
  2570.             break;
  2571.         case MOUSE_PRECISION:
  2572.         /*
  2573.             @ precision int
  2574.             @ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
  2575.             @ may be used / changed before every object
  2576.             @ In case of user interaction (like 'userdraw') this value will be used to determine the amount of decimals in the reply / answer
  2577.         */
  2578.             precision = (int) (get_real(infile,1));
  2579.             if(precision < 1 ){precision = 1;};
  2580.             break;
  2581.         case SETLIMITS:
  2582.         /*
  2583.             @setlimits
  2584.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  2585.             @may be used for inputfield based zooming / panning
  2586.             @use command xlabel / ylabel to change text from xmin to 'xlabel'min etc
  2587.             @note:the input value will not be checked on validity
  2588.         */
  2589.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2590.             add_setlimits(js_include_file,canvas_root_id);
  2591.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  2592.             use_pan_and_zoom = TRUE;
  2593.             done = TRUE;
  2594.             break;
  2595.         case ZOOM:
  2596.         /*
  2597.          @ zoom button_color
  2598.          @ introduce a controlpanel at the lower right corner
  2599.          @ giving six 15x15pixel 'active' rectangle areas<br />(for x,leftarrow,rightarrow,uparrow,downarrow and a '-' and a '+' sign ) for zooming and/or panning of the image
  2600.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  2601.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  2602.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  2603.          @ NOTE: use command 'zoom' at the end of your script code (the same is true for commanmd 'mouse')
  2604.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2605.          @ NOTE: when an object is dragged, zooming / panning will cause the coordinates to be reset to the original position :( <br />e.g. dragging / panning will get lost. (array with 'drag data' is erased)<br />This is a design flaw and not a feature !!
  2606.         */
  2607.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2608.             use_pan_and_zoom = TRUE;
  2609.             stroke_color = get_color(infile,1);
  2610.             /* we use BG_CANVAS (0) */
  2611.             add_zoom_buttons(js_include_file,canvas_root_id,stroke_color,stroke_opacity);
  2612.             done = TRUE;
  2613.             break;
  2614.         case ONCLICK:
  2615.         /*
  2616.          @ onclick
  2617.          @ keyword, no arguments
  2618.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2619.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2620.          @ NOTE: not all objects may be set clickable
  2621.         */
  2622.             fprintf(js_include_file,"use_dragdrop_reply = true;");
  2623.             onclick = 1;
  2624.             break;
  2625.         case DRAG:
  2626.         /*
  2627.          @ drag [x][y][xy]
  2628.          @ the next object will be draggable in x / y / xy direction
  2629.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2630.          @ the precision (default 2 decimals) in the student reply may be set with command 'precision'.<br />Use this 'precision' command before this command 'drag x|y|xy' !
  2631.          @ the answer is  : object_number : Xorg : Yorg : Xnew : Ynew<br />wherein object_number is the place of the draggable object in your script.<br />Only draggable object will have an object_number (e.g things like point,crosshair,line,segment,circle,rect,triangle...etc)
  2632.          @ use keywordd 'snaptogrid' , 'xsnaptogrid' or 'ysnaptogrid' to switch from free to discrete movement
  2633.          @ in case of external images (commands copy / copyresized) the external image can be set draggable ; always xy. <br />The function javascript;read_canvas() will return the xy-coordinates of all images.
  2634.          @ NOTE: in case an object is dragged , zooming or panning will cause the coordinates to be reset to the original position :( <br />e.g. dragging / panning will get lost. (array with 'drag data' is erased)<br />This is a design flaw and not a feature !!
  2635.         */
  2636.             temp = get_string(infile,1);
  2637.             if(strstr(temp,"xy") != NULL ){
  2638.                 drag_type = 0;
  2639.             }
  2640.             else
  2641.             {
  2642.                 if(strstr(temp,"x") != NULL ){
  2643.                     drag_type = 1;
  2644.                 }
  2645.                 else
  2646.                 {
  2647.                     drag_type = 2;
  2648.                 }
  2649.             }
  2650.             fprintf(js_include_file,"dragdrop_precision = %d;use_dragdrop_reply = true;",precision);
  2651.             onclick = 2;
  2652.        
  2653.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2654.             break;
  2655.         case BLINK:
  2656.         /*
  2657.          @ blink time(seconds)
  2658.          @ NOT IMPLEMETED -YET
  2659.         */
  2660.             break;
  2661.         case XUNIT:
  2662.         /*
  2663.          @ xunit some_unit_for_x-values
  2664.          @ unicode allowed (no html code)
  2665.          @ use together with command mousex
  2666.          @ will display the cursor x-coordinate 'unit'
  2667.         */
  2668.             fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
  2669.             break;
  2670.         case YUNIT:
  2671.         /*
  2672.          @ yunit some_unit_for_y-values
  2673.          @ unicode allowed (no html code)
  2674.          @ use together with command mousex
  2675.          @ will display the cursor y-coordinate 'unit'
  2676.         */
  2677.             fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
  2678.             break;
  2679.         case MOUSE_DISPLAY:
  2680.         /*
  2681.          @display x|y|xy|degree|radius,color,fontsize
  2682.          @will display the mouse cursor coordinates as x-only,y-only,(x:y),<br />the radius of a circle (this only in case 'userdraw circle(s),color' !!<br />or the angle in degrees ( rhe angle between x-axis;(0:0);(x:y)
  2683.          @use commands 'xunit' and / or 'yunit' to add the units to the mouse values
  2684.          @just like commands 'mouse','mousex','mousey','mouse_degree'...only other name)
  2685.         */
  2686.         temp = get_string_argument(infile,0);
  2687.         if( strstr(temp,"xy") != NULL ){
  2688.             int_data[0] = 2;
  2689.         }else{
  2690.             if( strstr(temp,"y") != NULL ){
  2691.                 int_data[0] = 1;
  2692.             }else{
  2693.                 if( strstr(temp,"x") != NULL ){
  2694.                     int_data[0] = 0;
  2695.                 }else{
  2696.                     if(strstr(temp,"degree") != NULL){
  2697.                         int_data[0] = 3;
  2698.                     }else{
  2699.                         if(strstr(temp,"radius") != NULL){
  2700.                             int_data[0] = 4;
  2701.                         }else{
  2702.                             int_data[0] = 2;
  2703.                         }
  2704.                     }
  2705.                 }
  2706.             }
  2707.         }
  2708.         stroke_color = get_color(infile,0);
  2709.         font_size = (int) (get_real(infile,1));
  2710.         tmp_buffer = my_newmem(26);
  2711.         snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2712.         add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,int_data[0]);
  2713.         break;
  2714.         case MOUSE_DEGREE:
  2715.         /*
  2716.          @ mouse_degree color,fontsize
  2717.          @ will display the angle in degrees between x-axis, (0:0) and the cursor (x:y) in 'color' and 'font size'<br /> using default fontfamily Ariel
  2718.          @ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
  2719.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2720.  
  2721.         */
  2722.             stroke_color = get_color(infile,0);
  2723.             font_size = (int) (get_real(infile,1));
  2724.             tmp_buffer = my_newmem(26);
  2725.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2726.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,3);
  2727.             break;
  2728.         case MOUSEX:
  2729.         /*
  2730.          @ mousex color,fontsize
  2731.          @ will display the cursor x-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2732.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2733.  
  2734.         */
  2735.             stroke_color = get_color(infile,0);
  2736.             font_size = (int) (get_real(infile,1));
  2737.             tmp_buffer = my_newmem(26);
  2738.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2739.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,0);
  2740.             break;
  2741.         case MOUSEY:
  2742.         /*
  2743.          @ mousey color,fontsize
  2744.          @ will display the cursor y-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2745.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2746.  
  2747.         */
  2748.             stroke_color = get_color(infile,0);
  2749.             font_size = (int) (get_real(infile,1));
  2750.             tmp_buffer = my_newmem(26);
  2751.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2752.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,1);
  2753.             break;
  2754.         case MOUSE:
  2755.         /*
  2756.          @ mouse color,fontsize
  2757.          @ will display the cursor (x:y) coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2758.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for commanmd 'zoom')
  2759.  
  2760.         */
  2761.             stroke_color = get_color(infile,0);
  2762.             font_size = (int) (get_real(infile,1));
  2763.             tmp_buffer = my_newmem(26);
  2764.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2765.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,2);
  2766.             break;
  2767.         case INTOOLTIP:
  2768.             /*
  2769.             @ intooltip link_text
  2770.             @ link_text is a single line (span-element)
  2771.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2772.             @ link_text may contain HTML markup
  2773.             @ the canvas will be displayed in a tooltip on 'link_text'
  2774.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2775.             */
  2776.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2777.             use_tooltip = TRUE;
  2778.             tooltip_text = get_string(infile,1);
  2779.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2780.             break;
  2781.         case AUDIO:
  2782.         /*
  2783.         @ audio x,y,w,h,loop,visible,audiofile location
  2784.         @ x,y : left top corner of audio element (in xrange / yrange)
  2785.         @ w,y : width and height in pixels
  2786.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2787.         @ visible : 0 or 1 (1 = show controls)
  2788.         @ audio format may be in *.mp3 or *.ogg
  2789.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2790.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2791.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2792.         @ example: upload both audio1.ogg and audio1.mp3 to http://server/files/<br />audio 0,0,http://server/files/audio1.mp3<br />svdraw will copy html-tag audio1.mp3 to audio1.ogg<br /> and the browser will play the compatible file (audio1.ogg or audio1.mp3)<br />
  2793.         */
  2794.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2795.             for(i=0;i<7;i++){
  2796.                 switch(i){
  2797.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2798.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2799.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2800.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2801.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2802.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2803.                     case 6:
  2804.                     temp = get_string(infile,1);
  2805.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2806.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2807.                     string_length = snprintf(NULL,0,  "draw_audio(%d,%d,%d,%d,%d,%d,%d,\"%s.ogg\",\"%s.mp3\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],temp,temp);
  2808.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2809.                     snprintf(tmp_buffer,string_length,"draw_audio(%d,%d,%d,%d,%d,%d,%d,\"%s.ogg\",\"%s.mp3\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],temp,temp);
  2810.                     add_to_buffer(tmp_buffer);
  2811.                     break;
  2812.                     default:break;
  2813.                 }
  2814.             }
  2815.             reset();
  2816.             break;
  2817.         case VIDEO:
  2818.         /*
  2819.         @ video x,y,w,h,videofile location
  2820.         @ x,y : left top corner of audio element (in xrange / yrange)
  2821.         @ w,y : width and height in pixels
  2822.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2823.         @ video format may be in *.mp4 (todo:other formats)
  2824.         */
  2825.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2826.             for(i=0;i<5;i++){
  2827.                 switch(i){
  2828.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2829.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2830.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2831.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2832.                     case 4: temp = get_string(infile,1);
  2833.                             string_length = snprintf(NULL,0,  "draw_video(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  2834.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2835.                             snprintf(tmp_buffer,string_length,"draw_video(%d,%d,%d,%d,%d,\"%s\");\n",canvas_root_id,int_data[0],int_data[1],int_data[2],int_data[3],temp);
  2836.                             add_to_buffer(tmp_buffer);
  2837.                             break;
  2838.                     default:break;
  2839.                 }
  2840.             }
  2841.             reset();
  2842.             break;
  2843.         case HATCHFILL:
  2844.         /*
  2845.         @ hatchfill x0,y0,dx,dy,color
  2846.         @ x0,y0 in xrange / yrange
  2847.         @ distances dx,dy in pixels
  2848.         */
  2849.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2850.             for(i=0;i<5;i++){
  2851.                 switch(i){
  2852.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2853.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2854.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2855.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2856.                     case 4: stroke_color = get_color(infile,1);
  2857.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2858.                     string_length = snprintf(NULL,0,  "draw_hatchfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2859.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2860.                     snprintf(tmp_buffer,string_length,"draw_hatchfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2861.                     add_to_buffer(tmp_buffer);
  2862.                     break;
  2863.                     default:break;
  2864.                 }
  2865.             }
  2866.             reset();
  2867.         break;
  2868.         case DIAMONDFILL:
  2869.         /*
  2870.         @ diamondfill x0,y0,dx,dy,color
  2871.         @ x0,y0 in xrange / yrange
  2872.         @ distances dx,dy in pixels
  2873.         */
  2874.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2875.             for(i=0;i<5;i++){
  2876.                 switch(i){
  2877.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2878.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2879.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2880.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2881.                     case 4: stroke_color = get_color(infile,1);
  2882.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2883.                     string_length = snprintf(NULL,0,  "draw_diamondfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2884.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2885.                     snprintf(tmp_buffer,string_length,"draw_diamondfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2886.                     add_to_buffer(tmp_buffer);
  2887.                     break;
  2888.                     default:break;
  2889.                 }
  2890.             }
  2891.             reset();
  2892.         break;
  2893.         case GRIDFILL:
  2894.         /*
  2895.         @ gridfill x0,y0,dx,dy,color
  2896.         @ x0,y0 in xrange / yrange
  2897.         @ distances dx,dy in pixels
  2898.         @ a draggable object may snap_to_grid (using keywords xysnaptogrid,xsnaprogrid, ysnaptogrid)
  2899.         @ userdraw object may snap_to_grid
  2900.         */
  2901.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2902.             for(i=0;i<5;i++){
  2903.                 switch(i){
  2904.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2905.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2906.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2907.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2908.                     case 4: stroke_color = get_color(infile,1);
  2909.                     string_length = snprintf(NULL,0,  "draw_gridfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2910.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2911.                     snprintf(tmp_buffer,string_length,"draw_gridfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2912.                     add_to_buffer(tmp_buffer);
  2913.                     break;
  2914.                     default:break;
  2915.                 }
  2916.             }
  2917.             reset();
  2918.         break;
  2919.         case DOTFILL:
  2920.         /*
  2921.         @ dotfill x0,y0,dx,dy,color
  2922.         @ x0,y0 in xrange / yrange
  2923.         @ distances dx,dy in pixels
  2924.         @ radius of dots is linewidth
  2925.         */
  2926.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2927.             for(i=0;i<5;i++){
  2928.                 switch(i){
  2929.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2930.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2931.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2932.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2933.                     case 4: stroke_color = get_color(infile,1);
  2934.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2935.                     string_length = snprintf(NULL,0,  "draw_dotfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2936.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2937.                     snprintf(tmp_buffer,string_length,"draw_dotfill(%d,%d,%d,%d,%d,%d,\"%s\",%.2f,%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],int_data[2],int_data[3],line_width,stroke_color,stroke_opacity,xsize,ysize);
  2938.                     add_to_buffer(tmp_buffer);
  2939.                     break;
  2940.                     default:break;
  2941.                 }
  2942.             }
  2943.             reset();
  2944.         break;
  2945.         case IMAGEFILL:
  2946.         /*
  2947.         @ imagefill dx,dy,image_url
  2948.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2949.         @ After pattern filling ,the fill-color should be reset !
  2950.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2951.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2952.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2953.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2954.         */
  2955.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2956.             for(i=0 ;i < 3 ; i++){
  2957.                 switch(i){
  2958.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2959.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2960.                     case 2: URL = get_string_argument(infile,1);
  2961.                             string_length = snprintf(NULL,0,  "draw_imagefill(%d,%d,%d,\"%s\",%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],URL,xsize,ysize);
  2962.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2963.                             snprintf(tmp_buffer,string_length,"draw_imagefill(%d,%d,%d,\"%s\",%d,%d);\n",STATIC_CANVAS,int_data[0],int_data[1],URL,xsize,ysize);
  2964.                             add_to_buffer(tmp_buffer);
  2965.                     break;
  2966.                 }
  2967.             }
  2968.             reset();
  2969.         break;
  2970.         case FILLTOBORDER:
  2971.         /*
  2972.         @ filltoborder x,y,bordercolor,color
  2973.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2974.         @ any other color will not act as border to the bucket fill
  2975.         @ use this command  after all boundary objects are declared.
  2976.         @ NOTE: filltoborder is a very (client) cpu intensive operation!<br />filling is done pixel by pixel<br/>e.g. image size of 400x400 uses 160000 pixels : each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br />on every data a few operations / comparisons are done...<br />So have pity on your students CPU..
  2977.         */
  2978.             for(i=0 ;i < 4 ; i++){
  2979.                 switch(i){
  2980.                     case 0:double_data[0] = get_real(infile,0);break;
  2981.                     case 1:double_data[1] = get_real(infile,0);break;
  2982.                     case 2:bgcolor = get_color(infile,0);break;
  2983.                     case 3:fill_color = get_color(infile,1);
  2984.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2985.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2986.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2987.                            }
  2988.                            decimals = find_number_of_digits(precision);
  2989.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2990.                            string_length = snprintf(NULL,0,  "setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215));
  2991.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2992.                            snprintf(tmp_buffer,string_length,"setTimeout(function(){filltoborder(%.*f,%.*f,[%s,%d],[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215));
  2993.                            add_to_buffer(tmp_buffer);
  2994.                            break;
  2995.                     default:break;
  2996.                 }
  2997.             }
  2998.             reset();
  2999.         break;
  3000.         case FLOODFILL:
  3001.         /*
  3002.         @ floodfill x,y,color
  3003.         @ alternative syntax: fill x,y,color
  3004.         @ fill the region of point (x:y) with color 'color'
  3005.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  3006.         @ use this command  after all boundary objects are declared.
  3007.         @ Use command 'clickfill,color' for user click driven flood fill.
  3008.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  3009.         @ NOTE: floodfill is a very (client) cpu intensive operation!<br />filling is done pixel by pixel<br/>e.g. image size of 400x400 uses 160000 pixels : each pixel contains 4 data (R,G,B,Opacity) = 640000 data.<br />on every data a few operations / comparisons are done...<br />So have pity on your students CPU..
  3010.         */
  3011.             for(i=0 ;i < 4 ; i++){
  3012.                 switch(i){
  3013.                     case 0:double_data[0] = get_real(infile,0);break;
  3014.                     case 1:double_data[1] = get_real(infile,0);break;
  3015.                     case 2:fill_color = get_color(infile,1);
  3016.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  3017.                                 js_function[DRAW_FLOODFILL] = 1;
  3018.                                 add_js_floodfill(js_include_file,canvas_root_id);
  3019.                            }
  3020.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  3021.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  3022.                            string_length = snprintf(NULL,0,  "setTimeout(function(){floodfill(0,%.*f,%.*f,[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215));
  3023.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3024.                            snprintf(tmp_buffer,string_length,"setTimeout(function(){floodfill(0,%.*f,%.*f,[%s,%d]);},1000);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215));
  3025.                            add_to_buffer(tmp_buffer);
  3026.                            break;
  3027.                     default:break;
  3028.                 }
  3029.             }
  3030.             reset();
  3031.         break;
  3032.         case CLICKFILLMARGE:
  3033.             clickfillmarge = (int) (get_real(infile,1));
  3034.             break;
  3035.         /*
  3036.         @ clickfillmarge int
  3037.         @ default 20 (pixels)
  3038.         @ when using command "clickfill fillcolor" a coloured area my be reverted ("undo") <br />back to background colour with a middle mouse click<br />when the click is in a 40x40 rectangle around a stored m mouseclick (userdraw_x[] and userdraw_y[])
  3039.         */
  3040.         case CLICKFILL:
  3041.         /*
  3042.         @ clickfill fillcolor
  3043.         @ user left mouse click will floodfill the area with fillcolor
  3044.         @ multiple areas may be coloured
  3045.         @ the coloured areas can be removed (changed to "bgcolor") by  middle / right mouse click <br />(if the click is in an 40x40 pixel area of the click coordinate that "painted" the area)
  3046.         @ the answer will be read as the (x:y) click coordinates per coloured area
  3047.         @ background color of main div may be set by using command "bgcolor color"
  3048.         @ may not be combined with command "userdraw"
  3049.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  3050.         */
  3051.          fill_color = get_color(infile,1);
  3052.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  3053.             js_function[DRAW_FLOODFILL] = 1;
  3054.             add_js_floodfill(js_include_file,canvas_root_id);
  3055.          }
  3056.          fprintf(js_include_file,"\n<!-- begin command clickfill -->\nvar marge_xy = %d;userdraw_x = new Array();userdraw_y = new Array();var user_clickfill_cnt = 0;\ncanvas_div.addEventListener(\"mousedown\",clickfill,false);function clickfill(evt){var x = evt.clientX - findPosX(canvas_div) + document.body.scrollLeft + document.documentElement.scrollLeft;var y = evt.clientY - findPosY(canvas_div) + document.body.scrollTop + document.documentElement.scrollTop;if(evt.which != 1){for(var p=0; p < user_clickfill_cnt;p++){if(userdraw_x[p] + marge_xy > x && userdraw_x[p] - marge_xy < x){if(userdraw_y[p] + marge_xy > y && userdraw_y[p] - marge_xy < y){if(confirm(\"Clear ?\")){floodfill(1,userdraw_x[p],userdraw_y[p],canvas_div.style.backgroundColor || [255,255,255,0]);userdraw_x.splice(p,2);userdraw_y.splice(p,2);user_clickfill_cnt--;return;};};};};};userdraw_x[user_clickfill_cnt] = x;userdraw_y[user_clickfill_cnt] = y;user_clickfill_cnt++;floodfill(1,x,y,[%s,%d]);};",clickfillmarge,fill_color,(int) (fill_opacity/0.0039215));
  3057.          add_read_canvas(canvas_root_id,1,reply_precision);
  3058.          reset();
  3059.         break;
  3060.         case SETPIXEL:
  3061.         /*
  3062.         @ setpixel x,y,color
  3063.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  3064.         @ pixels can not be dragged or clicked
  3065.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  3066.         */
  3067.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  3068.             for(i=0;i<3;i++){
  3069.                 switch(i){
  3070.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  3071.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  3072.                     case 2: stroke_color = get_color(infile,1);
  3073.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  3074.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3075.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  3076.                            add_to_buffer(tmp_buffer);
  3077.                            break;
  3078.                     default:break;
  3079.                 }
  3080.             }
  3081.             reset();
  3082.         break;
  3083.         case PIXELSIZE:
  3084.         /*
  3085.         @ pixelsize int
  3086.         @ in case you want to deviate from default pixelsize = 1...
  3087.         */
  3088.             pixelsize = (int) get_real(infile,1);
  3089.         break;
  3090.         case PIXELS:
  3091.         /*
  3092.         @ pixels color,x1,y1,x2,y2,x3,y3...
  3093.         @ Draw  "points" with diameter 1 pixel
  3094.         @ pixels can not be dragged or clicked
  3095.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  3096.         */
  3097.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  3098.             stroke_color=get_color(infile,0);
  3099.             i=0;
  3100.             c=0;
  3101.             while( ! done ){     /* get next item until EOL*/
  3102.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  3103.                 for( c = 0 ; c < 2; c++){
  3104.                     if(c == 0 ){
  3105.                         double_data[i] = get_real(infile,0);
  3106.                         i++;
  3107.                     }
  3108.                     else
  3109.                     {
  3110.                         double_data[i] = get_real(infile,1);
  3111.                         i++;
  3112.                     }
  3113.                 }
  3114.             }
  3115.             decimals = find_number_of_digits(precision);
  3116.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  3117.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3118.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3119.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3120.             add_to_buffer(tmp_buffer);
  3121.             reset();
  3122.             break;
  3123.         case REPLYFORMAT:
  3124.         /*
  3125.         @ replyformat number
  3126.         @ use number=-1 to deactivate the js-functions read_canvas() and read_dragdrop()
  3127.         @ default values should be fine !
  3128.         @ use command 'precision [0,1,10,100,1000,10000...]' before command 'replyformat' to set the desired number of decimals in the student reply / drawing
  3129.         @ the last value for 'precision int' will be used to calculate  the reply coordinates, if needed (read_canvas();)
  3130.         @ choose<ul><li>1 = x1,x2,x3,x4....x_n<br />y1,y2,y3,y4....y_n<br /><br />x/y in pixels</li><li>2 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br /> x/y in xrange / yrange coordinate system<br /></li><li>3 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br />  r1,r2,r3,r4....r_n<br />  x/y in pixels <br />  r in pixels</li><li>4 = x1,x2,x3,x4....x_n<br />  y1,y2,y3,y4....y_n<br />  r1,r2,r3,r4....r_n<br />  x/y in xrange / yrange coordinate system<br />  r in pixels</li><li>5 = Ax1,Ax2,Ax3,Ax4....Ax_n<br />  Ay1,Ay2,Ay3,Ay4....Ay_n<br />  Bx1,Bx2,Bx3,Bx4....Bx_n<br />  By1,By2,By3,By4....By_n<br />  Cx1,Cx2,Cx3,Cx4....Cx_n<br />  Cy1,Cy2,Cy3,Cy4....Cy_n<br />  ....<br />  Zx1,Zx2,Zx3,Zx4....Zx_n<br />  Zy1,Zy2,Zy3,Zy4....Zy_n<br />  x/y in pixels<br /></li><li>6 = Ax1,Ax2,Ax3,Ax4....Ax_n<br />  Ay1,Ay2,Ay3,Ay4....Ay_n<br />  Bx1,Bx2,Bx3,Bx4....Bx_n<br />  By1,By2,By3,By4....By_n<br />  Cx1,Cx2,Cx3,Cx4....Cx_n<br />  Cy1,Cy2,Cy3,Cy4....Cy_n<br />  ....<br />  Zx1,Zx2,Zx3,Zx4....Zx_n<br />  Zy1,Zy2,Zy3,Zy4....Zy_n<br />  x/y in xrange / yrange coordinate system<br /></li><li>7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n<br />  x/y in pixels</li><li>8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n<br />  x/y in xrange / yrange coordinate system</li><li>9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n<br />  x/y in pixels</li><li>10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n<br />  x/y in xrange / yrange coordinate system</li><li>11 = Ax1,Ay1,Ax2,Ay2<br />   Bx1,By1,Bx2,By2<br />   Cx1,Cy1,Cx2,Cy2<br />   Dx1,Dy1,Dx2,Dy2<br />   ......<br />   Zx1,Zy1,Zx2,Zy2<br />  x/y in xrange / yrange coordinate system</li><li>12 = Ax1,Ay1,Ax2,Ay2<br />   Bx1,By1,Bx2,By2<br />Cx1,Cy1,Cx2,Cy2<br />   Dx1,Dy1,Dx2,Dy2<br />   ......<br />   Zx1,Zy1,Zx2,Zy2<br />  x/y in pixels</li><li>13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2<br />  x/y in xrange / yrange coordinate system</li><li>14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2<br />  x/y in pixels</li><li>15 = reply from inputfields,textareas<br />  reply1,reply2,reply3,...,reply_n</li><li>16 = mathml input fields </li><li>17 = read "userdraw text,color" only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n</li><li>18 = read_canvas() will read all interactive clocks in H1:M1:S1,H2:M2:S2...Hn:Mn:Sn</li><li>19 = read_canvas() will return the object number of marked / clicked object (clock)<br />analogue to (shape library) onclick command </li><li>21 = (x1:y1) (x2:y2) ... (x_n:y_n)<br />verbatim coordinate return</li>22 = returns an array .... reply[0]=x1 reply[1]=y1 reply[2]=x2 reply[3]=y2 ... reply[n-1]=x_n reply[n]=y_n<br />  x/y in xrange / yrange coordinate system</li><li>replyformat 23 : can only be used for drawtype 'polyline'<br />a typical click sequence in drawtype polyline isx1,y1,x2,y2,x2,y2,x3,y3,x3,y3.....,x(n-1),y(n-1),x(n-1),y(n-1),xn,yn --replyformat 23--> x1,y1,x2,y2,x3,y3,.....x(n-1),y(n-1),xn,yn multiple occurences will be filtered out.The reply will be in x-y-range (xreply \\n yreply)</li><li>replyformat 24 = read all inputfield values: even those set 'readonly'</li><li>format 25 = angle1,angle2...angle_n : will return the radius (one or many) of the user drawn circle segment in degrees </li><li>format 26 = rad1,rad2...rad_n : will return the radius (one or many) of the user drawn circle segment in radians </li><li>27 = return (only) userdraw inputfields array: x1:y1:text1,x2:y2:text2...</li></ul>
  3131.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  3132.         */
  3133.          reply_format = (int) get_real(infile,1);
  3134.          reply_precision = precision;
  3135.         break;
  3136.         case LEGENDCOLORS:
  3137.         /*
  3138.         @ legendcolors color1:color2:color3:...:color_n
  3139.         @ will be used to colour a legend: use this command after the legend command ! e.g.<br />legend test1:test2:test3<br />legendcolors blue:red:orange<br />
  3140.         @ make sure the number of colours match the number of legend items
  3141.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  3142.         */
  3143.             if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
  3144.             temp = get_string(infile,1);
  3145.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3146.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
  3147.             break;
  3148.         case LEGEND:
  3149.         /*
  3150.         @ legend string1:string2:string3....string_n
  3151.         @ will be used to create a legend for a graph
  3152.         @ also see command 'piechart'
  3153.         @ will use the same colors per default as used in the graphs : use command 'legendcolors' to override the default
  3154.         */
  3155.             temp = get_string(infile,1);
  3156.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3157.             legend_cnt++; /* attention :starts with -1 : it will be used in piechart etc */
  3158.             fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
  3159.             break;
  3160.         case XLABEL:
  3161.         /*
  3162.         @ xlabel some_string
  3163.         @ will be used to create a label for the x-axis (label is in quadrant I)
  3164.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3165.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3166.         */
  3167.             temp = get_string(infile,1);
  3168.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  3169.             break;
  3170.         case YLABEL:
  3171.         /*
  3172.         @ ylabel some_string
  3173.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  3174.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3175.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3176.         */
  3177.             temp = get_string(infile,1);
  3178.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  3179.             break;
  3180.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  3181.         /*
  3182.         @ linegraph x1:y1;x2:y2...x_n:y_n
  3183.         @ will plot your data in a graph
  3184.         @ may only to be used together with command 'grid'
  3185.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3186.         @ use command 'legend' to provide an optional legend in right-top-corner
  3187.         @ also see command 'piechart'
  3188.         @ multiple linegraphs may be used in a single plot
  3189.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3190.         @ <ul><li>use command 'strokecolor' before command 'linegraph' to set the color of this graph</li><li>use command 'linewidth' before command 'linegraph' to set linewidth of this graph</li><li>use command 'dashed' before command 'linegraph' to set dashing of the graph</li><li>if dashing is set, use command 'dashtype' before command 'linegraph' to set the type of dashing of the graph</li></ul>
  3191.         */
  3192.             temp = get_string(infile,1);
  3193.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3194.             fprintf(js_include_file,"var linegraph_%d = [\"%s\",\"%d\",\"%d\",\"%d\",\"%d\",\"%s\"];",linegraph_cnt,stroke_color,line_width,use_dashed,dashtype[0],dashtype[1],temp);
  3195.             linegraph_cnt++;
  3196.             reset();
  3197.             break;
  3198.         case BARCHART:
  3199.         /*
  3200.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  3201.         @ will be used to create a legend for bar graph
  3202.         @ may only to be used together with command 'grid'
  3203.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3204.         @ use command 'legend' to provide an optional legend in right-top-corner
  3205.         @ also see command 'piechart'
  3206.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3207.         */
  3208.             temp = get_string(infile,1);
  3209.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  3210.             fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
  3211.             barchart_cnt++;
  3212.             reset();
  3213.             break;
  3214.         case CLOCK:
  3215.         /*
  3216.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  3217.         @ use command 'opacity stroke-opacity,fill-opacity' to adjust foreground (stroke) and background (fill) transparency
  3218.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  3219.         @ colors are optional: if not defined, default values will be used<br />default colours: clock 0,0,60,4,35,45,1,2,[space]<br />default colours: clock 0,0,60,4,35,45,1,2,,,,,<br />custom colours: clock 0,0,60,4,35,45,1,2,,,,yellow,red<br />custom colours: clock 0,0,60,4,35,45,1,2,white,white,white,black,yellow
  3220.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  3221.         @ interactive <ul><li>0 : not interactive, just clock(s)</li><li>1 : function read_canvas() will read all active clocks in H:M:S format<br />The active clock(s) can be adjusted by pupils</li><li>2 : function read_canvas() will return the clicked clock <br />(like multiplechoice; first clock in script in nr. 0 )</li></ul>
  3222.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  3223.         @ no combinations with other reply_types allowed, for now
  3224.         @ if interactive, 6 buttons per clock will be displayed for adjusting a clock (H+ M+ S+ H- M- S-)<br /> set_clock(clock_id,type,incr) <br />first clock has clock_id=0 ; type : H=1,M=2,S=3 ; incr : increment integer
  3225.         @ NOTE: if you need multiple clocks on a webpage, use multiple 'clock' commands in a single script !<br />and <i>not multiple canvas scripts</i> in a single page
  3226.         */
  3227.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  3228.  
  3229.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  3230.             for(i=0;i<9;i++){
  3231.              switch(i){
  3232.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  3233.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  3234.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  3235.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  3236.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  3237.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  3238.               case 6: int_data[6] = get_real(infile,0);if(int_data[6] < 0 || int_data[6] > 2){canvas_error("hourglass can be 0,1 or 2");}break;/* type hourglass */
  3239.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  3240.                 switch(int_data[7]){
  3241.                     case 0:break;
  3242.                     case 1:if(clock_cnt == 0){
  3243.                                 if( reply_format == 0 ){
  3244.                                      reply_format = 18; /* user sets clock */
  3245.                                     /* string_length = snprintf(NULL,0,"set_clock = function(num,type,diff){var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  3246.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3247.                                      snprintf(tmp_buffer,string_length,"set_clock = function(num,type,diff){var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  3248.                                      add_to_buffer(tmp_buffer);
  3249.                                     */
  3250.                                      fprintf(js_include_file,"set_clock = function(num,type,diff){if(wims_status == \"done\"){return;};var name = eval(\"clocks\"+num);switch(type){case 1:name.H = parseInt(name.H+diff);break;case 2:name.M = parseInt(name.M+diff);break;case 3:name.S = parseInt(name.S+diff);break;default: break;};name = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);};\n");
  3251.                                 }
  3252.                                 else
  3253.                                 {
  3254.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  3255.                                 }
  3256.                              }
  3257.                             fprintf(stdout,"<p style=\"text-align:center\"><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,1)\" value=\"H+\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,1)\" value=\"M+\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,1)\" value=\"S+\" /><br /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,1,-1)\" value=\"H&minus;\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,2,-1)\" value=\"M&minus;\" /><input style=\"%s\" type=\"button\" onclick=\"javascript:set_clock(%d,3,-1)\" value=\"S&minus;\" /></p>",input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt,input_style,clock_cnt);
  3258.                     break;
  3259.                     case 2:if( reply_format == 0 ){
  3260.                                 reply_format = 19; /* "onclick */
  3261.                                 fprintf(js_include_file,"\n<!-- begin onclick handler for clocks -->\nvar reply = new Array();\n\ncanvas_div.addEventListener( 'mousedown', user_click,false);\n\nfunction user_click(evt){if(evt.which == 1){var canvas_rect = clock_canvas.getBoundingClientRect();\nvar x = evt.clientX - canvas_rect.left;\nvar y = evt.clientY - canvas_rect.top;\nvar p = 0;\nvar name;\nvar t = true;\nwhile(t){try{name = eval('clocks'+p);\nif( x < name.xc + name.radius && x > name.xc - name.radius ){if( y < name.yc + name.radius && y > name.yc - name.radius ){reply[0] = p;\nname = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,\"lightblue\",name.fg_color);\n};\n}else{clock_ctx.clearRect(name.xc-name.radius,name.yc-name.radius,name.xc+name.radius,name.yc+name.radius);\nname = new clock(name.xc,name.yc,name.radius,name.H,name.M,name.S,name.type,name.interaction,name.H_color,name.M_color,name.S_color,name.bg_color,name.fg_color);\n};\np++;\n}catch(e){t=false;\n};\n};\n};\n};\n\n<!-- end onclick handler for clocks -->\n ");
  3262.                             }
  3263.                             else
  3264.                             {
  3265.                                 if( reply_format != 19){
  3266.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  3267.                                  }
  3268.                             }
  3269.                      break;
  3270.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  3271.                 }
  3272.                 break;
  3273.                 case 8:
  3274.                         if(clock_cnt == 0 ){ /* set opacity's just once .... it should be a argument to clock() , for now it's OK */
  3275.                             fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
  3276.                         }
  3277.                         temp = get_string(infile,1);
  3278.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  3279.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  3280.                         string_length = snprintf(NULL,0,"var clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  3281.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3282.                         snprintf(tmp_buffer,string_length,"var clocks%d = new clock(%d,%d,%d,%d,%d,%d,%d,%d,\"%s\");\n",clock_cnt,int_data[0],int_data[1],int_data[2],int_data[3],int_data[4],int_data[5],int_data[6],int_data[7],temp);
  3283.                         add_to_buffer(tmp_buffer);
  3284.                         clock_cnt++;
  3285.                         break;
  3286.                 default:break;
  3287.              }
  3288.             }
  3289.             break;
  3290.         case PIECHART:
  3291.         /*
  3292.         @ piechart xc,yc,radius,'data+colorlist'
  3293.         @ (xc : yc) center of circle diagram in xrange/yrange
  3294.         @ radius in pixels
  3295.         @ data+color list: a colon separated list of raw data and corresponding colours<br />canvasdraw will not check validity of colornames...<br />in case of trouble look into javascript debugging of your browser
  3296.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  3297.         @ the number of colors must match the number of data.
  3298.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  3299.         @ use command "legend string1:string2:...:string_n" to automatically create a legend <br />using the same colours as pie segments<br />unicode allowed in legend<br />expect javascript trouble if the amount of 'pie-slices', 'pie-colours' 'pie-legend-titles' do not match<br />a javascript console is your best friend...<br />use command 'fontfamily' to set the font of the legend.
  3300.         */
  3301.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}
  3302.             for(i=0;i<5;i++){
  3303.                 switch(i){
  3304.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  3305.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  3306.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  3307.                     case 3: temp = get_string(infile,1);
  3308.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  3309.                             string_length = snprintf(NULL,0,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\");\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family);
  3310.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3311.                             snprintf(tmp_buffer,string_length,"draw_piechart(%d,%d,%d,%d,[\"%s\"],%.2f,%d,\"%s\");\n",PIECHART,int_data[0],int_data[1],int_data[2],temp,fill_opacity,legend_cnt,font_family);
  3312.                             add_to_buffer(tmp_buffer);
  3313.                            break;
  3314.                     default:break;
  3315.                 }
  3316.             }
  3317.             reset();
  3318.         break;
  3319.         case STATUS:
  3320.         /*
  3321.         @status
  3322.         @keyword
  3323.         @alernative keyword: nostatus
  3324.         @used to override the effects of "status=done" in wims (answer.phtml)
  3325.         @affects inputfields / textarea's in canvasimage and all userdraw based commands
  3326.         @e.g.: if keyword 'status' is set, the pupil will be able to modify the canvas when the 'wims status variable' is set to 'done'
  3327.         */
  3328.  
  3329.             fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
  3330.             break;
  3331.         case XLOGBASE:
  3332.         /*
  3333.         @ xlogbase number
  3334.         @ sets the logbase number for the x-axis
  3335.         @ default value 10
  3336.         @ use together with commands xlogscale / xylogscale
  3337.         */
  3338.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  3339.             break;
  3340.         case YLOGBASE:
  3341.         /*
  3342.         @ ylogbase number
  3343.         @ sets the logbase number for the y-axis
  3344.         @ default value 10
  3345.         @ use together with commands ylogscale / xylogscale
  3346.         */
  3347.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  3348.             break;
  3349.         case XLOGSCALE:
  3350.         /*
  3351.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  3352.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3353.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  3354.          @ the linewidth is set using command 'linewidth int'
  3355.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3356.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  3357.          @ the x/y- axis numbering is triggered by keyword 'axisnumbering'<ul><li>use command 'precision' before 'xlogscale' command to set the precision (decimals) of the axis numbering</li><li>use commands 'xlabel some_text' and/or 'ylabel some_text' for text on axis : use command 'fontsize int' to set the fontsize (default 12px)</li><li>use command 'fontfamily fnt_family_string' to set the fonts for axis-numbering</li><li>use command'fontcolor' to set the colour</li></ul>
  3358.          @ note: the complete canvas will be used for the 'log paper'
  3359.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3360.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3361.          @ note: when using something like 'xrange 0.0001,0.01'...combined with commands 'mouse color,fontsize' and/or 'userdraw type,color'...<br /> make sure the precision is set accordingly (eg command 'precision 10000')
  3362.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3363.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3364.         */
  3365.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3366.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  3367.             for(i=0;i<4;i++){
  3368.                 switch(i){
  3369.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3370.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3371.                     case 2: stroke_color = get_color(infile,0); break;
  3372.                     case 3: fill_color = get_color(infile,1);
  3373.                         string_length = snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  3374.                         tmp_buffer = my_newmem(string_length+1);
  3375.                         snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  3376.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  3377.                         add_to_buffer(tmp_buffer);
  3378.                         break;
  3379.                     default:break;
  3380.                 }
  3381.             }
  3382.             break;
  3383.         case YLOGSCALE:
  3384.         /*
  3385.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  3386.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3387.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  3388.          @ the linewidth is set using command 'linewidth int'
  3389.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3390.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  3391.          @ the x/y- axis numbering is triggered by keyword 'axisnumbering'<ul><li>use command 'precision' before 'ylogscale' command to set the precision (decimals) of the axis numbering</li><li>use commands 'xlabel some_text' and/or 'ylabel some_text' for text on axis : use command 'fontsize int' to set the fontsize (default 12px)</li><li>use command 'fontfamily fnt_family_string' to set the fonts for axis-numbering</li><li>use command'fontcolor' to set the colour</li></ul>
  3392.          @ note: the complete canvas will be used for the 'log paper'
  3393.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3394.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3395.          @ note: when using something like 'yrange 0.0001,0.01'...combined with commands 'mouse color,fontsize' and/or 'userdraw type,color'...<br /> make sure the precision is set accordingly (eg command 'precision 10000')
  3396.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3397.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3398.         */
  3399.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3400.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  3401.             for(i=0;i<4;i++){
  3402.                 switch(i){
  3403.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3404.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3405.                     case 2: stroke_color = get_color(infile,0); break;
  3406.                     case 3: fill_color = get_color(infile,1);
  3407.                         string_length = snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  3408.                         tmp_buffer = my_newmem(string_length+1);
  3409.                         snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%f,%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,double_data[0],int_data[0],precision);
  3410.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  3411.                         add_to_buffer(tmp_buffer);
  3412.                         break;
  3413.                     default:break;
  3414.                 }
  3415.             }
  3416.             break;
  3417.         case XYLOGSCALE:
  3418.         /*
  3419.          @ xylogscale majorcolor,minorcolor
  3420.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3421.          @ the linewidth is set using command 'linewidth int'
  3422.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3423.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  3424.          @ the x/y- axis numbering is triggered by keyword 'axisnumbering'<ul><li>use commands 'xlabel some_text' and/or 'ylabel some_text' for text on axis : use command 'fontsize int' to set the fontsize (default 12px)</li><li>use command 'fontfamily fnt_family_string' to set the fonts for axis-numbering</li><li>use command'fontcolor' to set the colour</li></ul>
  3425.          @ note: the complete canvas will be used for the 'log paper'
  3426.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3427.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3428.          @ note: when using something like 'yrange 0.0001,0.01'...combined with commands 'mouse color,fontsize' and/or 'userdraw type,color'...<br /> make sure the precision is set accordingly (eg command 'precision 10000')
  3429.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3430.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3431.         */
  3432.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3433.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  3434.             for(i=0;i<2;i++){
  3435.                 switch(i){
  3436.                     case 0: stroke_color = get_color(infile,0); break;
  3437.                     case 1: fill_color = get_color(infile,1);
  3438.                         string_length = snprintf(NULL,0,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,precision);
  3439.                         tmp_buffer = my_newmem(string_length+1);
  3440.                         snprintf(tmp_buffer,string_length,"draw_grid%d(%d,%d,\"%s\",\"%s\",%.2f,%.2f,%d,\"%s\",\"%s\",%d,%d); ",canvas_root_id,GRID_CANVAS,line_width,stroke_color,fill_color,stroke_opacity,fill_opacity,font_size,font_family,font_color,use_axis_numbering,precision);
  3441.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  3442.                         add_to_buffer(tmp_buffer);
  3443.                         break;
  3444.                     default:break;
  3445.                 }
  3446.             }
  3447.         break;
  3448.         default:sync_input(infile);
  3449.         break;
  3450.     }
  3451.   }
  3452.   /* we are done parsing script file */
  3453.   /* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize : Quadrant I */
  3454.   if( found_size_command == 1 ){
  3455.     fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
  3456.   }
  3457.   else
  3458.   {
  3459.     if( found_size_command != 3 ){
  3460.      canvas_error("Please specify both xrange and yrange ...");
  3461.     }
  3462.   }
  3463.  
  3464.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable/clickable shapes / objects  ! */
  3465.   add_javascript_functions(js_function,canvas_root_id);
  3466.    /* add read_canvas() etc functions if needed */
  3467.   if( reply_format > 0 ){ add_read_canvas(canvas_root_id,reply_format,reply_precision);}
  3468.   if( use_pan_and_zoom == TRUE ){
  3469.   /* in case of zooming ... */
  3470.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  3471.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  3472.  var ymin_start=ymin;var ymax_start=xmax;\
  3473.  var zoom_x_increment=0;var zoom_y_increment=0;\
  3474.  var pan_x_increment=0;var pan_y_increment=0;\
  3475.  if(use_ylogscale == 0 ){\
  3476.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (ymax - ymin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  3477.  }else{\
  3478.   zoom_x_increment = (xmax - xmin)/20;\
  3479.   pan_x_increment = (xmax - xmin)/20;\
  3480.  };\
  3481.  function start_canvas%d(type){\
  3482.   switch(type){\
  3483.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  3484.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  3485.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  3486.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  3487.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  3488.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  3489.    case 6:location.reload();break;\
  3490.    default:break;\
  3491.   };\
  3492.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  3493.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  3494.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  3495.   %s\
  3496.  };\
  3497.  start_canvas%d(333);\
  3498. };\n\
  3499. <!-- end wims_canvas_function -->\n\
  3500. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  3501.   }
  3502.   else
  3503.   {
  3504.   /* no zoom, just add buffer */
  3505.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  3506.  %s\
  3507. };\n\
  3508. <!-- end wims_canvas_function -->\n\
  3509. wims_canvas_function%d();\n",buffer,canvas_root_id);
  3510.   }
  3511. /* done writing the javascript include file */
  3512. fclose(js_include_file);
  3513.  
  3514. }
  3515.  
  3516. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  3517. if(use_tooltip == TRUE){
  3518.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  3519. }
  3520. exit(EXIT_SUCCESS);
  3521. }
  3522. /* end main() */
  3523.  
  3524. /******************************************************************************
  3525. **
  3526. **  sync_input
  3527. **
  3528. **  synchronises input line - reads to end of line, leaving file pointer
  3529. **  at first character of next line.
  3530. **
  3531. **  Used by:
  3532. **  main program - error handling.
  3533. **
  3534. ******************************************************************************/
  3535. void sync_input(FILE *infile)
  3536. {
  3537.         int c = 0;
  3538.  
  3539.         if( c == '\n' || c == ';' ) return;
  3540.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  3541.         if( c == EOF ) finished = 1;
  3542.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  3543.         return;
  3544. }
  3545.  
  3546. /******************************************************************************/
  3547.  
  3548. char *str_replace(const char *str, const char *old, const char *new){
  3549. /* http://creativeandcritical.net/str-replace-c/ */
  3550.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  3551.     char *ret, *r;
  3552.     const char *p, *q;
  3553.     size_t oldlen = strlen(old);
  3554.     size_t count = 0;
  3555.     size_t retlen = 0;
  3556.     size_t newlen = strlen(new);
  3557.     if (oldlen != newlen){
  3558.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  3559.             count++;
  3560.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  3561.         }
  3562.     }
  3563.     else
  3564.     {
  3565.         retlen = strlen(str);
  3566.     }
  3567.  
  3568.     if ((ret = malloc(retlen + 1)) == NULL){
  3569.         ret = NULL;
  3570.         canvas_error("string argument is NULL");
  3571.     }
  3572.     else
  3573.     {
  3574.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  3575.             size_t l = q - p;
  3576.             memcpy(r, p, l);
  3577.             r += l;
  3578.             memcpy(r, new, newlen);
  3579.             r += newlen;
  3580.         }
  3581.         strcpy(r, p);
  3582.     }
  3583.     return ret;
  3584. }
  3585.  
  3586. /******************************************************************************/
  3587.  
  3588. char *get_color(FILE *infile , int last){
  3589.     int c,i = 0,is_hex = 0;
  3590.     char temp[MAX_COLOR_STRING], *string;
  3591.     const char *not_allowed = "0123456789";
  3592.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  3593.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  3594.         if( c == '#' ){
  3595.             is_hex = 1;
  3596.         }
  3597.         if( c != ' '){
  3598.             if( is_hex == 0 ){if(strchr(not_allowed,c) != 0){canvas_error("found something like a number...but is should have been a colour or #hex color number...<br />Do not use R,G,B !!! ");}}
  3599.             temp[i]=tolower(c);
  3600.             i++;
  3601.         }
  3602.     }
  3603.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3604.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3605.     if( c == EOF ){finished = 1;}
  3606.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3607.     temp[i]='\0';
  3608.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  3609.     if( is_hex == 1 ){
  3610.         char red[3], green[3], blue[3];
  3611.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  3612.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  3613.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  3614.         int r = (int) strtol(red,   NULL, 16);
  3615.         int g = (int) strtol(green, NULL, 16);
  3616.         int b = (int) strtol(blue,  NULL, 16);
  3617.         string = (char *)my_newmem(12);
  3618.         snprintf(string,11,"%d,%d,%d",r,g,b);
  3619.         return string;
  3620.     }
  3621.     else
  3622.     {
  3623.         string = (char *)my_newmem(sizeof(temp));
  3624.         snprintf(string,sizeof(temp),"%s",temp);
  3625.         for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  3626.             if( strcmp( colors[i].name , string ) == 0 ){
  3627.                 return colors[i].rgb;
  3628.             }
  3629.         }
  3630.         canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  3631.     }
  3632.     return "0,0,255";
  3633. }
  3634.  
  3635. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  3636.     int c,i=0;
  3637.     char  temp[MAX_BUFFER], *string;
  3638.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  3639.         temp[i]=c;
  3640.         i++;
  3641.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  3642.     }
  3643.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  3644.     if( c == '\n') { done = TRUE; line_number++; }
  3645.     if( c == EOF ) {
  3646.         finished = 1;
  3647.         if( last != 1 ){ canvas_error("expected more arguments");}
  3648.     }
  3649.     temp[i]='\0';
  3650.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  3651.     string=(char *)my_newmem(strlen(temp));
  3652.     snprintf(string,sizeof(temp),"%s",temp);
  3653.     return string;
  3654. }
  3655.  
  3656. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  3657.     int c,i=0;
  3658.     char temp[MAX_BUFFER], *string;
  3659.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  3660.         temp[i]=c;
  3661.         i++;
  3662.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  3663.     }
  3664.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  3665.     if( c == '\n') { line_number++; }
  3666.     if( c == EOF ) {finished = 1;}
  3667.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3668.     temp[i]='\0';
  3669.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  3670.     string=(char *)my_newmem(sizeof(temp));
  3671.     snprintf(string,sizeof(temp),"%s",temp);
  3672.     done = TRUE;
  3673.     return string;
  3674. }
  3675.  
  3676. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  3677.     int c,i=0,found_calc = 0;
  3678.     double y;
  3679.     char tmp[MAX_INT];
  3680.     /* these things are 'allowed functions' : *,^,+,-,/,(,),e,arc,cos,tan,pi,log,ln */
  3681.     const char *allowed = "earcostanpilog+-/^()";/* assuming these are allowed stuff in a 'number'*/
  3682.     const char *not_allowed = "#bdfghjkmquvwxyz";/* avoid segmentation faults in a "atof()" and "wims eval" */
  3683.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  3684.      if( c != ' ' ){
  3685.       if( i == 0 &&  c == '+' ){
  3686.        continue;
  3687.       }
  3688.       else
  3689.       {
  3690.        c = tolower(c);
  3691.        if( strchr(not_allowed,c) != 0 ){canvas_error("found a character not associated with a number...");}
  3692.        if( strchr(allowed,c) != 0 ){found_calc = 1;}/* hand the string over to wims eval() */
  3693.        tmp[i] = c;
  3694.        i++;
  3695.       }
  3696.      }
  3697.      if( i > MAX_INT - 1){canvas_error("number too large");}
  3698.     }
  3699.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3700.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3701.     if( c == EOF ){done = TRUE ; finished = 1;}
  3702.     tmp[i]='\0';
  3703.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  3704.     if( found_calc == 1 ){ /* use wims eval to calculate 2*pi/3 */
  3705.      void *f = eval_create(tmp);
  3706.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  3707.      y = eval_x(f, 1);
  3708.      /* if function is bogus; y = 1 : so no core dumps */
  3709.      eval_destroy(f);
  3710.     }
  3711.     else
  3712.     {
  3713.      y = atof(tmp);
  3714.     }
  3715.     return y;
  3716. }
  3717.  
  3718.  
  3719. void canvas_error(char *msg){
  3720.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  3721.     finished = 1;
  3722.     exit(EXIT_SUCCESS);
  3723. }
  3724.  
  3725.  
  3726. /* convert x/y coordinates to pixel */
  3727. int x2px(double x){
  3728.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3729. }
  3730.  
  3731. int y2px(double y){
  3732.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3733. }
  3734.  
  3735. double px2x(int x){
  3736.  return (x*(xmax - xmin)/xsize + xmin);
  3737. }
  3738. double px2y(int y){
  3739.  return (y*(ymax - ymin)/ysize + ymin);
  3740. }
  3741.  
  3742. void add_to_buffer(char *tmp){
  3743.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3744.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3745.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3746.  if( space_left > strlen(tmp)){
  3747.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3748.  }
  3749.  else
  3750.  {
  3751.   canvas_error("buffer is too big\n");
  3752.  }
  3753.  tmp = NULL;free(tmp);
  3754.  return;
  3755. }
  3756.  
  3757. void reset(){
  3758.  if(use_filled == TRUE){use_filled = FALSE;}
  3759.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3760.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3761.    onclick = 0;
  3762. }
  3763.  
  3764.  
  3765.  
  3766. /* What reply format in read_canvas();
  3767.  
  3768. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3769. 1 = x1,x2,x3,x4....x_n
  3770.     y1,y2,y3,y4....y_n
  3771.  
  3772.     x/y in pixels
  3773.  
  3774. 2 = x1,x2,x3,x4....x_n
  3775.     y1,y2,y3,y4....y_n
  3776.     x/y in  xrange / yrange coordinate system
  3777.  
  3778. 3 = x1,x2,x3,x4....x_n
  3779.     y1,y2,y3,y4....y_n
  3780.     r1,r2,r3,r4....r_n
  3781.  
  3782.     x/y in pixels
  3783.     r in pixels
  3784.  
  3785. 4 = x1,x2,x3,x4....x_n
  3786.     y1,y2,y3,y4....y_n
  3787.     r1,r2,r3,r4....r_n
  3788.  
  3789.     x/y in  xrange / yrange coordinate system
  3790.     r in pixels
  3791.  
  3792. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3793.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3794.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3795.     By1,By2,By3,By4....By_n
  3796.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3797.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3798.     ....
  3799.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3800.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3801.  
  3802.     x/y in pixels
  3803.  
  3804. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3805.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3806.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3807.     By1,By2,By3,By4....By_n
  3808.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3809.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3810.     ....
  3811.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3812.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3813.  
  3814.     x/y in  xrange / yrange coordinate system
  3815.  
  3816. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3817.  
  3818.     x/y in pixels
  3819.  
  3820. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3821.  
  3822.     x/y in  xrange / yrange coordinate system
  3823.  
  3824. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3825.  
  3826.     x/y in pixels
  3827.  
  3828. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3829.  
  3830.     x/y in  xrange / yrange coordinate system
  3831.  
  3832. 11 = Ax1,Ay1,Ax2,Ay2
  3833.      Bx1,By1,Bx2,By2
  3834.      Cx1,Cy1,Cx2,Cy2
  3835.      Dx1,Dy1,Dx2,Dy2
  3836.      ......
  3837.      Zx1,Zy1,Zx2,Zy2
  3838.  
  3839.     x/y in  xrange / yrange coordinate system
  3840.  
  3841. 12 = Ax1,Ay1,Ax2,Ay2
  3842.      Bx1,By1,Bx2,By2
  3843.      Cx1,Cy1,Cx2,Cy2
  3844.      Dx1,Dy1,Dx2,Dy2
  3845.      ......
  3846.      Zx1,Zy1,Zx2,Zy2
  3847.  
  3848.     x/y in pixels
  3849.  
  3850. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3851.  
  3852.     x/y in  xrange / yrange coordinate system
  3853. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3854.     x/y in pixels
  3855. 15 = reply from inputfields,textareas
  3856.     reply1,reply2,reply3,...,reply_n
  3857.     only fields set write (a.g. will not read 'readonly' inputfield values'
  3858.  
  3859. 16 = read mathml inputfields only
  3860.  
  3861. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3862.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3863.  
  3864. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3865. 19 = return clicked object number (analogue to shape-library onclick)
  3866. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3867. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3868. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3869.     x/y in  xrange / yrange coordinate system
  3870. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3871. 24 = read all inputfield values: even those set 'readonly'
  3872. 25 = return all userdrawn arcs in degrees:
  3873. 26 = return all userdrawn arcs in radians:
  3874. 27 = return (only) userdraw inputfields array: x1:y1:text1,x2:y2:text2...
  3875. */
  3876.  
  3877.  
  3878. void add_read_canvas(int canvas_root_id,int type_reply,int reply_precision){
  3879. /* just 1 reply type allowed */
  3880. fprintf(js_include_file,"\
  3881. \n<!-- begin set_reply_precision() -->\n\
  3882. function set_reply_precision(){\
  3883. var len = userdraw_x.length;\
  3884. var prec = %d;\
  3885. for(var p = 0 ; p < len ; p++ ){\
  3886.  userdraw_x[p] = (Math.round(prec*userdraw_x[p]))/prec;\
  3887.  userdraw_y[p] = (Math.round(prec*userdraw_y[p]))/prec;\
  3888. };\
  3889. len = userdraw_radius.length;\
  3890. if( len > 0 ){\
  3891.  for(var p = 0 ; p < len ; p++ ){\
  3892.   userdraw_radius[p] = (Math.round(prec*userdraw_radius[p]))/prec;\
  3893.  };\
  3894. };\
  3895. };",reply_precision);
  3896.  
  3897. switch(type_reply){
  3898. /*
  3899. answers may have:
  3900. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3901. */
  3902.     case 1: fprintf(js_include_file,"\
  3903. \n<!-- begin function 1 read_canvas%d() -->\n\
  3904. read_canvas%d = function(){\
  3905. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3906. set_reply_precision();\
  3907. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3908.  var p = 0;var input_reply = new Array();\
  3909.  if( document.getElementById(\"canvas_input0\")){\
  3910.   var t = 0;\
  3911.   while(document.getElementById(\"canvas_input\"+t)){\
  3912.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3913.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3914.     p++;\
  3915.    };\
  3916.    t++;\
  3917.   };\
  3918.  };\
  3919.  if( typeof userdraw_text != 'undefined' ){\
  3920.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3921.  }\
  3922.  else\
  3923.  {\
  3924.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3925.  }\
  3926. }\
  3927. else\
  3928. {\
  3929.  if( typeof userdraw_text != 'undefined' ){\
  3930.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3931.  }\
  3932.  else\
  3933.  {\
  3934.   return userdraw_x+\"\\n\"+userdraw_y;\
  3935.  }\
  3936. };\
  3937. };\n\
  3938. <!-- end function 1 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  3939.     break;
  3940.     case 2: fprintf(js_include_file,"\
  3941. \n<!-- begin function 2 read_canvas%d() -->\n\
  3942. read_canvas%d = function(){\
  3943. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3944. set_reply_precision();\
  3945. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3946. var prec = %d;\
  3947. while(userdraw_x[p]){\
  3948.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3949.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  3950.  p++;\
  3951. };\
  3952. if(p == 0){alert(\"nothing drawn...\");return;};\
  3953. if( document.getElementById(\"canvas_input0\")){\
  3954.  var p = 0;var input_reply = new Array();\
  3955.  if( document.getElementById(\"canvas_input0\")){\
  3956.   var t = 0;\
  3957.   while(document.getElementById(\"canvas_input\"+t)){\
  3958.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3959.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3960.     p++;\
  3961.    };\
  3962.    t++;\
  3963.   };\
  3964.  };\
  3965.  if( typeof userdraw_text != 'undefined' ){\
  3966.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3967.  }\
  3968.  else\
  3969.  {\
  3970.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3971.  }\
  3972. }\
  3973. else\
  3974. {\
  3975.  if( typeof userdraw_text != 'undefined' ){\
  3976.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3977.  }\
  3978.  else\
  3979.  {\
  3980.   return reply_x+\"\\n\"+reply_y;\
  3981.  };\
  3982. };\
  3983. };\n\
  3984. <!-- end function 2 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  3985.     break;
  3986.     case 3: fprintf(js_include_file,"\
  3987. \n<!-- begin function 3 read_canvas%d() -->\n\
  3988. read_canvas%d = function(){\
  3989. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3990. set_reply_precision();\
  3991. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3992.  var p = 0;var input_reply = new Array();\
  3993.  if( document.getElementById(\"canvas_input0\")){\
  3994.   var t = 0;\
  3995.   while(document.getElementById(\"canvas_input\"+t)){\
  3996.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3997.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3998.     p++;\
  3999.    };\
  4000.    t++;\
  4001.   };\
  4002.  };\
  4003.  if( typeof userdraw_text != 'undefined' ){\
  4004.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4005.  }\
  4006.  else\
  4007.  {\
  4008.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  4009.  }\
  4010. }\
  4011. else\
  4012. {\
  4013.  if( typeof userdraw_text != 'undefined' ){\
  4014.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  4015.  }\
  4016.  else\
  4017.  {\
  4018.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  4019.  }\
  4020. }\
  4021. };\n\
  4022. <!-- end function 3 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4023.     break;
  4024.     case 4: fprintf(js_include_file,"\
  4025. \n<!-- begin function 4 read_canvas%d() -->\n\
  4026. read_canvas%d = function(){\
  4027. var prec = %d;\
  4028. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  4029. while(userdraw_x[p]){\
  4030.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  4031.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;;\
  4032.  p++;\
  4033. };\
  4034. if(p == 0){alert(\"nothing drawn...\");return;};\
  4035. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4036.  var p = 0;var input_reply = new Array();\
  4037.  if( document.getElementById(\"canvas_input0\")){\
  4038.   var t = 0;\
  4039.   while(document.getElementById(\"canvas_input\"+t)){\
  4040.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4041.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4042.     p++;\
  4043.    };\
  4044.    t++;\
  4045.   };\
  4046.  };\
  4047.  if( typeof userdraw_text != 'undefined' ){\
  4048.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4049.  }\
  4050.  else\
  4051.  {\
  4052.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  4053.  }\
  4054. }\
  4055. else\
  4056. {\
  4057.  if( typeof userdraw_text != 'undefined' ){\
  4058.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  4059.  }\
  4060.  else\
  4061.  {\
  4062.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  4063.  }\
  4064. };\
  4065. };\n\
  4066. <!-- end function 4 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4067.     break;
  4068.     /*
  4069.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  4070.         used for userdraw multiple paths
  4071.     */
  4072.     case 5: fprintf(js_include_file,"\
  4073. \n<!-- begin function 5 read_canvas%d() -->\n\
  4074. read_canvas%d = function(){\
  4075. set_reply_precision();\
  4076. var p = 0;\
  4077. var reply = \"\";\
  4078. for(p = 0; p < userdraw_x.length;p++){\
  4079.  if(userdraw_x[p] != null ){\
  4080.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  4081.  };\
  4082. };\
  4083. if(p == 0){alert(\"nothing drawn...\");return;};\
  4084. userdraw_x = [];userdraw_y = [];\
  4085. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4086.  var p = 0;var input_reply = new Array();\
  4087.  if( document.getElementById(\"canvas_input0\")){\
  4088.   var t = 0;\
  4089.   while(document.getElementById(\"canvas_input\"+t)){\
  4090.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4091.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4092.     p++;\
  4093.    };\
  4094.    t++;\
  4095.   };\
  4096.  };\
  4097.  if( typeof userdraw_text != 'undefined' ){\
  4098.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4099.  }\
  4100.  else\
  4101.  {\
  4102.   return reply +\"\\n\"+input_reply;\
  4103.  }\
  4104. }\
  4105. else\
  4106. {\
  4107.  if( typeof userdraw_text != 'undefined' ){\
  4108.   return reply+\"\\n\"+userdraw_text;\
  4109.  }\
  4110.  else\
  4111.  {\
  4112.   return reply;\
  4113.  }\
  4114. };\
  4115. };\n\
  4116. <!-- end function 5 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4117.     break;
  4118.     /*
  4119.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  4120.         used for userdraw multiple paths
  4121.     */
  4122.     case 6: fprintf(js_include_file,"\
  4123. \n<!-- begin function 6 read_canvas%d() -->\n\
  4124. read_canvas%d = function(){\
  4125. var p = 0;\
  4126. var reply = \"\";\
  4127. var tmp_x = new Array();\
  4128. var tmp_y = new Array();\
  4129. var prec = %d;\
  4130. for(p = 0 ; p < userdraw_x.length; p++){\
  4131.  tmp_x = userdraw_x[p];\
  4132.  tmp_y = userdraw_y[p];\
  4133.  if(tmp_x != null){\
  4134.   for(var i = 0 ; i < tmp_x.length ; i++){\
  4135.    tmp_x[i] = (Math.round(prec*(px2x(tmp_x[i]))))/prec;\
  4136.    tmp_y[i] = (Math.round(prec*(px2y(tmp_y[i]))))/prec;\
  4137.   };\
  4138.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  4139.  };\
  4140. };\
  4141. if(p == 0){alert(\"nothing drawn...\");return;};\
  4142. userdraw_x = [];userdraw_y = [];\
  4143. if( document.getElementById(\"canvas_input0\") ){\
  4144.  var p = 0;var input_reply = new Array();\
  4145.  if( document.getElementById(\"canvas_input0\")){\
  4146.   var t = 0;\
  4147.   while(document.getElementById(\"canvas_input\"+t)){\
  4148.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4149.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4150.     p++;\
  4151.    };\
  4152.    t++;\
  4153.   };\
  4154.  };\
  4155.  if( typeof userdraw_text != 'undefined' ){\
  4156.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4157.  }\
  4158.  else\
  4159.  {\
  4160.   return reply +\"\\n\"+input_reply;\
  4161.  }\
  4162. }\
  4163. else\
  4164. {\
  4165.  if( typeof userdraw_text != 'undefined' ){\
  4166.   return reply +\"\\n\"+userdraw_text;\
  4167.  }\
  4168.  else\
  4169.  {\
  4170.   return reply;\
  4171.  }\
  4172. };\
  4173. };\n\
  4174. <!-- end function 6 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4175.     break;
  4176.     case 7: fprintf(js_include_file,"\
  4177. \n<!-- begin function 7 read_canvas%d() -->\n\
  4178. read_canvas%d = function(){\
  4179. set_reply_precision();\
  4180. var reply = new Array();\
  4181. var p = 0;\
  4182. while(userdraw_x[p]){\
  4183.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  4184.  p++;\
  4185. };\
  4186. if(p == 0){alert(\"nothing drawn...\");return;};\
  4187. if( document.getElementById(\"canvas_input0\") ){\
  4188.  var p = 0;var input_reply = new Array();\
  4189.  if( document.getElementById(\"canvas_input0\")){\
  4190.   var t = 0;\
  4191.   while(document.getElementById(\"canvas_input\"+t)){\
  4192.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4193.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4194.     p++;\
  4195.    };\
  4196.    t++;\
  4197.   };\
  4198.  };\
  4199.  if( typeof userdraw_text != 'undefined' ){\
  4200.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4201.  }\
  4202.  else\
  4203.  {\
  4204.   return reply+\"\\n\"+input_reply;\
  4205.  }\
  4206. }\
  4207. else\
  4208. {\
  4209.  if( typeof userdraw_text != 'undefined' ){\
  4210.   return reply+\"\\n\"+userdraw_text;\
  4211.  }\
  4212.  else\
  4213.  {\
  4214.   return reply;\
  4215.  }\
  4216. };\
  4217. };\n\
  4218. <!-- end function 7 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4219.     break;
  4220.     case 8: fprintf(js_include_file,"\
  4221. \n<!-- begin function 8 read_canvas%d() -->\n\
  4222. read_canvas%d = function(){\
  4223. var reply = new Array();\
  4224. var p = 0;\
  4225. var prec = %d;\
  4226. while(userdraw_x[p]){\
  4227.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  4228.  p++;\
  4229. };\
  4230. if(p == 0){alert(\"nothing drawn...\");return;};\
  4231. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4232.  var p = 0;var input_reply = new Array();\
  4233.  if( document.getElementById(\"canvas_input0\")){\
  4234.   var t = 0;\
  4235.   while(document.getElementById(\"canvas_input\"+t)){\
  4236.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4237.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4238.     p++;\
  4239.    };\
  4240.    t++;\
  4241.   };\
  4242.  };\
  4243.  if( typeof userdraw_text != 'undefined' ){\
  4244.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4245.  }\
  4246.  else\
  4247.  {\
  4248.   return reply +\"\\n\"+input_reply;\
  4249.  }\
  4250. }\
  4251. else\
  4252. {\
  4253.  if( typeof userdraw_text != 'undefined' ){\
  4254.   return reply +\"\\n\"+userdraw_text;\
  4255.  }\
  4256.  else\
  4257.  {\
  4258.   return reply;\
  4259.  }\
  4260. };\
  4261. };\n\
  4262. <!-- end function 8 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4263.     break;
  4264.     case 9: fprintf(js_include_file,"\
  4265. \n<!-- begin function 9 read_canvas%d() -->\n\
  4266. read_canvas%d = function(){\
  4267. set_reply_precision();\
  4268. var reply = new Array();\
  4269. var p = 0;\
  4270. while(userdraw_x[p]){\
  4271.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  4272.  p++;\
  4273. };\
  4274. if(p == 0){alert(\"nothing drawn...\");return;};\
  4275. if( document.getElementById(\"canvas_input0\") ){\
  4276.  var p = 0;var input_reply = new Array();\
  4277.  if( document.getElementById(\"canvas_input0\")){\
  4278.   var t = 0;\
  4279.   while(document.getElementById(\"canvas_input\"+t)){\
  4280.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4281.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4282.     p++;\
  4283.    };\
  4284.    t++;\
  4285.   };\
  4286.  };\
  4287.  if( typeof userdraw_text != 'undefined' ){\
  4288.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4289.  }\
  4290.  else\
  4291.  {\
  4292.   return reply +\"\\n\"+input_reply;\
  4293.  }\
  4294. }\
  4295. else\
  4296. {\
  4297.  if( typeof userdraw_text != 'undefined' ){\
  4298.   return reply +\"\\n\"+userdraw_text;\
  4299.  }\
  4300.  else\
  4301.  {\
  4302.   return reply;\
  4303.  }\
  4304. };\
  4305. };\n\
  4306. <!-- end function 9 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4307.     break;
  4308.     case 10: fprintf(js_include_file,"\
  4309. \n<!-- begin function 10 read_canvas%d() -->\n\
  4310. read_canvas%d = function(){\
  4311. var reply = new Array();\
  4312. var p = 0;\
  4313. var prec = %d;\
  4314. while(userdraw_x[p]){\
  4315.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec +\":\" + (Math.round(prec*userdraw_radius[p]))/prec;\
  4316.  p++;\
  4317. };\
  4318. if(p == 0){alert(\"nothing drawn...\");return;};\
  4319. if( document.getElementById(\"canvas_input0\") ){\
  4320.  var p = 0;var input_reply = new Array();\
  4321.  if( document.getElementById(\"canvas_input0\")){\
  4322.   var t = 0;\
  4323.   while(document.getElementById(\"canvas_input\"+t)){\
  4324.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4325.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4326.     p++;\
  4327.    };\
  4328.    t++;\
  4329.   };\
  4330.  };\
  4331.  if( typeof userdraw_text != 'undefined' ){\
  4332.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4333.  }\
  4334.  else\
  4335.  {\
  4336.   return reply +\"\\n\"+input_reply;\
  4337.  }\
  4338. }\
  4339. else\
  4340. {\
  4341.  if( typeof userdraw_text != 'undefined' ){\
  4342.   return reply +\"\\n\"+userdraw_text;\
  4343.  }\
  4344.  else\
  4345.  {\
  4346.   return reply;\
  4347.  }\
  4348. };\
  4349. };\n\
  4350. <!-- end function 10 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4351.     break;
  4352.     case 11: fprintf(js_include_file,"\
  4353. \n<!-- begin function 11 read_canvas%d() -->\n\
  4354. read_canvas%d = function(){\
  4355. var reply = \"\";\
  4356. var p = 0;\
  4357. var prec = %d;\
  4358. while(userdraw_x[p]){\
  4359.  reply = reply + (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\",\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec +\",\" + (Math.round(prec*(px2x(userdraw_x[p+1]))))/prec +\",\" + (Math.round(prec*(px2y(userdraw_y[p+1]))))/prec +\"\\n\" ;\
  4360.  p = p+2;\
  4361. };\
  4362. if(p == 0){alert(\"nothing drawn...\");return;};\
  4363. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4364.  var p = 0;var input_reply = new Array();\
  4365.  if( document.getElementById(\"canvas_input0\")){\
  4366.   var t = 0;\
  4367.   while(document.getElementById(\"canvas_input\"+t)){\
  4368.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4369.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4370.     p++;\
  4371.    };\
  4372.    t++;\
  4373.   };\
  4374.  };\
  4375.  if( typeof userdraw_text != 'undefined' ){\
  4376.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4377.  }\
  4378.  else\
  4379.  {\
  4380.   return reply +\"\\n\"+input_reply;\
  4381.  }\
  4382. }\
  4383. else\
  4384. {\
  4385.  if( typeof userdraw_text != 'undefined' ){\
  4386.   return reply +\"\\n\"+userdraw_text;\
  4387.  }\
  4388.  else\
  4389.  {\
  4390.   return reply;\
  4391.  }\
  4392. };\
  4393. };\n\
  4394. <!-- end function 11 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4395.     break;
  4396.     case 12: fprintf(js_include_file,"\
  4397. \n<!-- begin function 12 read_canvas%d() -->\n\
  4398. read_canvas%d = function(){\
  4399. set_reply_precision();\
  4400. var reply = \"\";\
  4401. var p = 0;\
  4402. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  4403.  if(userdraw_x[p] != null){\
  4404.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  4405.  };\
  4406. };\
  4407. if(p == 0){alert(\"nothing drawn...\");return;};\
  4408. if( document.getElementById(\"canvas_input0\") ){\
  4409.  var p = 0;var input_reply = new Array();\
  4410.  if( document.getElementById(\"canvas_input0\")){\
  4411.   var t = 0;\
  4412.   while(document.getElementById(\"canvas_input\"+t)){\
  4413.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4414.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4415.     p++;\
  4416.    };\
  4417.    t++;\
  4418.   };\
  4419.  };\
  4420.  if( typeof userdraw_text != 'undefined' ){\
  4421.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4422.  }\
  4423.  else\
  4424.  {\
  4425.   return reply +\"\\n\"+input_reply;\
  4426.  }\
  4427. }\
  4428. else\
  4429. {\
  4430.  if( typeof userdraw_text != 'undefined' ){\
  4431.   return reply +\"\\n\"+userdraw_text\
  4432.  }\
  4433.  else\
  4434.  {\
  4435.   return reply;\
  4436.  }\
  4437. };\
  4438. };\n\
  4439. <!-- end function 12 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4440.     break;
  4441.     case 13: fprintf(js_include_file,"\
  4442. \n<!-- begin function 13 read_canvas%d() -->\n\
  4443. read_canvas%d = function(){\
  4444. var reply = new Array();\
  4445. var p = 0;var i = 0;\
  4446. var prec = %d;\
  4447. while(userdraw_x[p]){\
  4448.  reply[i] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec +\":\" + (Math.round(prec*(px2x(userdraw_x[p+1]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p+1]))))/prec;\
  4449.  p = p+2;i++;\
  4450. };\
  4451. if(p == 0){alert(\"nothing drawn...\");return;};\
  4452. if( document.getElementById(\"canvas_input0\") ){\
  4453.  var p = 0;var input_reply = new Array();\
  4454.  if( document.getElementById(\"canvas_input0\")){\
  4455.   var t = 0;\
  4456.   while(document.getElementById(\"canvas_input\"+t)){\
  4457.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4458.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4459.     p++;\
  4460.    };\
  4461.    t++;\
  4462.   };\
  4463.  };\
  4464.  if( typeof userdraw_text != 'undefined' ){\
  4465.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4466.  }\
  4467.  else\
  4468.  {\
  4469.   return reply +\"\\n\"+input_reply;\
  4470.  }\
  4471. }\
  4472. else\
  4473. {\
  4474.  if( typeof userdraw_text != 'undefined' ){\
  4475.   return reply +\"\\n\"+userdraw_text\
  4476.  }\
  4477.  else\
  4478.  {\
  4479.   return reply;\
  4480.  }\
  4481. };\
  4482. };\n\
  4483. <!-- end function 13 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4484.     break;
  4485.     case 14: fprintf(js_include_file,"\
  4486. \n<!-- begin function 14 read_canvas%d() -->\n\
  4487. read_canvas%d = function(){\
  4488. set_reply_precision();\
  4489. var reply = new Array();\
  4490. var p = 0;var i = 0;\
  4491. while(userdraw_x[p]){\
  4492.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  4493.  p = p+2;i++;\
  4494. };\
  4495. if(p == 0){alert(\"nothing drawn...\");return;};\
  4496. if( document.getElementById(\"canvas_input0\") ){\
  4497.  var p = 0;var input_reply = new Array();\
  4498.  if( document.getElementById(\"canvas_input0\")){\
  4499.   var t = 0;\
  4500.   while(document.getElementById(\"canvas_input\"+t)){\
  4501.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4502.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4503.     p++;\
  4504.    };\
  4505.    t++;\
  4506.   };\
  4507.  };\
  4508.  if( typeof userdraw_text != 'undefined' ){\
  4509.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4510.  }\
  4511.  else\
  4512.  {\
  4513.   return reply +\"\\n\"+input_reply;\
  4514.  }\
  4515. }\
  4516. else\
  4517. {\
  4518.  if( typeof userdraw_text != 'undefined' ){\
  4519.   return reply +\"\\n\"+userdraw_text;\
  4520.  }\
  4521.  else\
  4522.  {\
  4523.   return reply;\
  4524.  }\
  4525. };\
  4526. };\n\
  4527. <!-- end function 14 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4528.     break;
  4529.     case 15: fprintf(js_include_file,"\
  4530. \n<!-- begin function 15  read_canvas%d() -->\n\
  4531. read_canvas%d = function(){\
  4532. var input_reply = new Array();\
  4533. var p = 0;\
  4534. if( document.getElementById(\"canvas_input0\")){\
  4535.  var t = 0;\
  4536.  while(document.getElementById(\"canvas_input\"+t)){\
  4537.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4538.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4539.    p++;\
  4540.   };\
  4541.   t++;\
  4542.  };\
  4543. };\
  4544. if( typeof userdraw_text != 'undefined' ){\
  4545.   return input_reply +\"\\n\"+userdraw_text;\
  4546. }\
  4547. else\
  4548. {\
  4549.  return input_reply;\
  4550. };\
  4551. };\n\
  4552. <!-- end function 15 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4553.     break;
  4554.     case 16: fprintf(js_include_file,"\
  4555. \n<!-- begin function 16 read_mathml() -->\n\
  4556. function read_mathml(){\
  4557. var reply = new Array();\
  4558. var p = 0;\
  4559. if( document.getElementById(\"mathml0\")){\
  4560.  while(document.getElementById(\"mathml\"+p)){\
  4561.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  4562.   p++;\
  4563.  };\
  4564. };\
  4565. return reply;\
  4566. };\
  4567. this.read_mathml = read_mathml;\n\
  4568. <!-- end function 16 read_mathml() -->");
  4569.     break;
  4570.     case 17:  fprintf(js_include_file,"\
  4571. \n<!-- begin function 17 read_canvas%d() -->\n\
  4572. read_canvas%d = function(){\
  4573. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  4574. return userdraw_text;\
  4575. };\n\
  4576. <!-- end function 17 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4577.     break;
  4578.     case 18: fprintf(js_include_file,"\
  4579. \n<!-- begin function 18 read_canvas%d() -->\n\
  4580. read_canvas%d = function(){\
  4581. var p = 0;\
  4582. var reply = new Array();\
  4583. var name;\
  4584. var t = true;\
  4585. var h;var m;var s;\
  4586. while(t){\
  4587.  try{\
  4588.   name = eval('clocks'+p);\
  4589.   h = name.H;m = name.M;s = name.S;\
  4590.   if(s < 0){s = 60 + s;m = m - 1;};\
  4591.   if(m < 0){m = 60 + m;h = h - 1;};\
  4592.   if(h < 0){h = 12 + h;};\
  4593.   h = parseInt((h+m/60+s/3600)%%12);m = parseInt((m + s/60)%%60);s = parseInt(s%%60);\
  4594.   reply[p] = h+\":\"+m+\":\"+s;\
  4595.   p++;\
  4596.  }catch(e){t=false;};\
  4597. };\
  4598. if( p == 0 ){alert(\"clock(s) not modified...\");return;}\
  4599. return reply;\
  4600. };\n\
  4601. <!-- end function 18 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4602.     break;
  4603.     case 19: fprintf(js_include_file,"\
  4604. \n<!-- begin function 19 read_canvas%d() -->\n\
  4605. read_canvas%d = function(){\
  4606. return reply[0];\
  4607. };\n\
  4608. <!-- end function 19 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4609.     break;
  4610.     case 20: fprintf(js_include_file,"\
  4611. \n<!-- begin function 20 read_canvas%d() -->\n\
  4612. read_canvas%d = function(){\
  4613. var prec = %d;\
  4614. var len  = ext_drag_images.length;\
  4615. var reply = new Array(len);\
  4616. for(var p = 0 ; p < len ; p++){\
  4617.    var img = ext_drag_images[p];\
  4618.    reply[p] = (Math.round(prec*(px2x(img[6]))))/prec+\":\"+(Math.round(prec*(px2y(img[7]))))/prec;\
  4619. };\
  4620. return reply;\
  4621. };\n\
  4622. <!-- end function 20 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4623.     break;
  4624.     case 21: fprintf(js_include_file,"\
  4625. \n<!-- begin function 21 read_canvas%d() -->\n\
  4626. read_canvas%d = function(){\
  4627. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  4628. var reply_coord = new Array();var p = 0;\
  4629. var prec = %d;\
  4630. while(userdraw_x[p]){\
  4631.  reply_coord[p] = \"(\"+(Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\")\";\
  4632.  p++;\
  4633. };\
  4634. if(p == 0){alert(\"nothing drawn...\");return;};\
  4635. if( document.getElementById(\"canvas_input0\") ){\
  4636.  var p = 0;var input_reply = new Array();\
  4637.  if( document.getElementById(\"canvas_input0\")){\
  4638.   var t = 0;\
  4639.   while(document.getElementById(\"canvas_input\"+t)){\
  4640.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4641.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4642.     p++;\
  4643.    };\
  4644.    t++;\
  4645.   };\
  4646.  };\
  4647.  if( typeof userdraw_text != 'undefined' ){\
  4648.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4649.  }\
  4650.  else\
  4651.  {\
  4652.   return reply_coord+\"\\n\"+input_reply;\
  4653.  }\
  4654. }\
  4655. else\
  4656. {\
  4657.  if( typeof userdraw_text != 'undefined' ){\
  4658.   return reply_coord+\"\\n\"+userdraw_text;\
  4659.  }\
  4660.  else\
  4661.  {\
  4662.   return reply_coord;\
  4663.  };\
  4664. };\
  4665. };\n\
  4666. <!-- end function 21 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4667.     break;
  4668.     case 22: fprintf(js_include_file,"\
  4669. \n<!-- begin function 22 read_canvas%d() -->\n\
  4670. read_canvas%d = function(){\
  4671. var reply = new Array();\
  4672. var lu = userdraw_x.length;\
  4673. if(lu == 0){alert(\"nothing drawn...\");return;};\
  4674. var idx = 0;\
  4675. var prec = %d;\
  4676. for(var p = 0 ; p < lu ; p++){\
  4677.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;idx++;\
  4678.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;idx++;\
  4679. };\
  4680. if( document.getElementById(\"canvas_input0\") ){\
  4681.  var p = 0;var input_reply = new Array();\
  4682.  if( document.getElementById(\"canvas_input0\")){\
  4683.   var t = 0;\
  4684.   while(document.getElementById(\"canvas_input\"+t)){\
  4685.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4686.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4687.     p++;\
  4688.    };\
  4689.    t++;\
  4690.   };\
  4691.  };\
  4692.  if( typeof userdraw_text != 'undefined' ){\
  4693.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4694.  }\
  4695.  else\
  4696.  {\
  4697.   return reply +\"\\n\"+input_reply;\
  4698.  }\
  4699. }\
  4700. else\
  4701. {\
  4702.  if( typeof userdraw_text != 'undefined' ){\
  4703.   return reply +\"\\n\"+userdraw_text;\
  4704.  }\
  4705.  else\
  4706.  {\
  4707.   return reply;\
  4708.  }\
  4709. };\
  4710. };\n\
  4711. <!-- end function 22 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4712.     break;
  4713.     case 23: fprintf(js_include_file,"\
  4714. \n<!-- begin function 23 read_canvas%d() default 5 px marge -->\n\
  4715. read_canvas%d = function(){\
  4716. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  4717. var lu = userdraw_x.length;\
  4718. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  4719. var reply_x = new Array();var reply_y = new Array();\
  4720. var marge = 5;var p = 0;\
  4721. var prec = %d;\
  4722. for(var i = 0; i < lu - 1 ; i++ ){\
  4723.  if( Math.abs(userdraw_x[i] - userdraw_x[i+1])){\
  4724.   reply_x[p] = (Math.round(prec*(px2x(userdraw_x[i]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[i]))))/prec;\
  4725.   if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  4726.   p++;\
  4727.  };\
  4728.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[lu-1]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[lu-1]))))/prec;\
  4729. };\
  4730. if( document.getElementById(\"canvas_input0\")){\
  4731.  var p = 0;var input_reply = new Array();\
  4732.  if( document.getElementById(\"canvas_input0\")){\
  4733.   var t = 0;\
  4734.   while(document.getElementById(\"canvas_input\"+t)){\
  4735.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4736.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4737.     p++;\
  4738.    };\
  4739.    t++;\
  4740.   };\
  4741.  };\
  4742.  if( typeof userdraw_text != 'undefined' ){\
  4743.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4744.  }\
  4745.  else\
  4746.  {\
  4747.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4748.  }\
  4749. }\
  4750. else\
  4751. {\
  4752.  if( typeof userdraw_text != 'undefined' ){\
  4753.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4754.  }\
  4755.  else\
  4756.  {\
  4757.   return reply_x+\"\\n\"+reply_y;\
  4758.  };\
  4759. };\
  4760. };\n\
  4761. <!-- end function 23 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4762.     break;
  4763.     case 24: fprintf(js_include_file,"\n\
  4764. <!-- begin function 24  read_canvas%d() -->\n\
  4765. read_canvas%d = function(){\
  4766. var input_reply = new Array();\
  4767. var p = 0;\
  4768. if( document.getElementById(\"canvas_input0\")){\
  4769.  while(document.getElementById(\"canvas_input\"+p)){\
  4770.    input_reply[p] = document.getElementById(\"canvas_input\"+p).value;\
  4771.    p++;\
  4772.  };\
  4773.  return input_reply;\
  4774. };\
  4775. };\n\
  4776. <!-- end function 24 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4777.     break;
  4778.     case 25:
  4779.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas%d() : angle(s) in degrees-->\n\
  4780. read_canvas%d = function(){\
  4781. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4782. var lu = userdraw_radius.length;\
  4783. var prec = %d;\
  4784. var angle_reply = new Array(lu);\
  4785. for(var p = 0 ; p < lu ; p++){\
  4786.  angle_reply[p] = (Math.round(prec*180*(userdraw_radius[p])/Math.PI))/prec;\
  4787. };\
  4788. return angle_reply;\
  4789. };\n\
  4790. <!-- end function 25 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4791.     break;
  4792.     case 26:
  4793.     fprintf(js_include_file,"\n<!-- begin function 26 read_canvas%d() : angle(s) in radians-->\n\
  4794. read_canvas%d = function(){\
  4795. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4796. var lu = userdraw_radius.length;\
  4797. var prec = %d;\
  4798. var angle_reply = new Array(lu);\
  4799. for(var p = 0 ; p < lu ; p++){\
  4800.  angle_reply[p] = (Math.round(prec*(userdraw_radius[p])))/prec;\
  4801. };\
  4802. return angle_reply;\
  4803. };\n\
  4804. <!-- end function 26 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4805.     break;
  4806.     case 27:
  4807.     fprintf(js_include_file,"\n<!-- begin function 27 read_canvas%d()  : inputfield(s) location and their values : -->\n\
  4808. read_canvas%d = function(){\
  4809. var lu = userdraw_x.length;\
  4810. if( lu < 1){alert(\"nothing drawn...\");return;}\
  4811. set_reply_precision();\
  4812. var prec = %d;\
  4813. for(var p = 0 ; p < lu ; p++){\
  4814.   reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\":\"+ document.getElementById(\"canvas_input\"+p).value;\
  4815. };\
  4816. return reply;\
  4817. };\n\
  4818. <!-- end function 27 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4819.     break;
  4820.     default: canvas_error("hmmm unknown replyformat...");break;
  4821. }
  4822.  return;
  4823. }
  4824.  
  4825.  
  4826. /*
  4827.  add drawfunction :
  4828.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4829.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4830.  - grid / mathml
  4831.  - will not scale or zoom in
  4832.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4833.  - is printed directly into 'js_include_file'
  4834. */
  4835.  
  4836. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4837. int i;
  4838. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4839.  if( js_functions[i] == 1){
  4840.     switch(i){
  4841.     case DRAG_EXTERNAL_IMAGE:
  4842. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4843. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4844. var external_ctx = external_canvas.getContext(\"2d\");\
  4845. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4846. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4847. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4848. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4849. var selected_image = null;\
  4850. var ext_image_cnt = 0;\
  4851. var ext_drag_images = new Array();\
  4852. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4853. ext_image_cnt = idx;\
  4854. var image = new Image();\
  4855. image.src = URL;\
  4856. image.onload = function(){\
  4857.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4858.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4859.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4860.  var img = new Array(10);\
  4861.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4862.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4863.  ext_drag_images[idx] = img;\
  4864.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4865. };\
  4866. };\
  4867. function dragstop(evt){\
  4868. selected_image = null;return;\
  4869. };\
  4870. function dragxy(evt){\
  4871. if( selected_image != null ){\
  4872.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4873.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4874.  var s_img = ext_drag_images[selected_image];\
  4875.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4876.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4877.  ext_drag_images[selected_image] = s_img;\
  4878.  external_ctx.clearRect(0,0,xsize,ysize);\
  4879.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4880.   var img = ext_drag_images[i];\
  4881.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4882.  };\
  4883. };\
  4884. };\
  4885. function setxy(evt){\
  4886. if( ! selected_image && evt.which == 1 ){\
  4887.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4888.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4889.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4890.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4891.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4892.   var img = ext_drag_images[p];\
  4893.   if( img[0] == 1 ){\
  4894.    var w = img.width;\
  4895.    var h = img.height;\
  4896.    if( xm > img[6] && xm < img[6] + img[4]){\
  4897.     if( ym > img[7] && ym < img[7] + img[5]){\
  4898.      img[6] = xm;\
  4899.      img[7] = ym;\
  4900.      ext_drag_images[p] = img;\
  4901.      selected_image = p;\
  4902.      dragxy(evt);\
  4903.     };\
  4904.    };\
  4905.   };\
  4906.  };\
  4907. }\
  4908. else\
  4909. {\
  4910.  selected_image = null;\
  4911. };\
  4912. };",canvas_root_id);
  4913.     break;
  4914.  
  4915.     case DRAW_EXTERNAL_IMAGE:
  4916. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4917. var draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4918. var image = new Image();\
  4919. image.src = URL;\
  4920. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4921. image.onload = function(){\
  4922.  if( x0 < 1 ){ x0 = 0; };\
  4923.  if( y0 < 1 ){ y0 = 0; };\
  4924.  if( sx < 1 ){ sx = 0; };\
  4925.  if( sy < 1 ){ sy = 0; };\
  4926.  if( width < 1 ){ width = image.width;};\
  4927.  if( height < 1 ){ height = image.height;};\
  4928.  if( swidth < 1 ){ swidth = image.width;};\
  4929.  if( sheight < 1 ){ sheight = image.height;};\
  4930.  var ml = x0 - sx;\
  4931.  var mh = y0 - sy;\
  4932.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4933.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4934.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4935.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4936.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4937. };\
  4938. };",canvas_root_id);
  4939.     break;
  4940.     case DRAW_GRIDFILL:/* not used for userdraw */
  4941. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4942. var draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4943. var obj;\
  4944. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4945.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4946. }\
  4947. else\
  4948. {\
  4949.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4950. };\
  4951. var ctx = obj.getContext(\"2d\");\
  4952. var x,y;\
  4953. snap_x = dx;snap_y = dy;\
  4954. ctx.save();\
  4955. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4956. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4957.    ctx.moveTo(x,y0);\
  4958.    ctx.lineTo(x,ysize);\
  4959. };\
  4960. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4961.    ctx.moveTo(x0,y);\
  4962.    ctx.lineTo(xsize,y);\
  4963. };\
  4964. ctx.stroke();\
  4965. ctx.restore();\
  4966. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4967.     break;
  4968.  
  4969.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4970. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4971. var draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4972. var obj;\
  4973. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4974.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4975. }\
  4976. else\
  4977. {\
  4978.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4979. };\
  4980. var ctx = obj.getContext(\"2d\");\
  4981. ctx.save();\
  4982. var img = new Image();\
  4983. img.src = URL;\
  4984. img.onload = function(){\
  4985.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4986.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4987.  }\
  4988.  else\
  4989.  {\
  4990.    var repeat = \"repeat\";\
  4991.    if(img.width > xsize - x0){\
  4992.         repeat = \"repeat-y\";\
  4993.    }\
  4994.    else\
  4995.    {\
  4996.     if( img.height > ysize -x0 ){\
  4997.      repeat = \"repeat-x\";\
  4998.     }\
  4999.    }\
  5000.    var pattern = ctx.createPattern(img,repeat);\
  5001.    ctx.rect(x0,y0,xsize,ysize);\
  5002.    ctx.fillStyle = pattern;\
  5003.  }\
  5004.  ctx.fill();\
  5005. };\
  5006. ctx.restore();\
  5007. return;\
  5008. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5009.     break;
  5010.  
  5011.     case DRAW_DOTFILL:/* not  used for userdraw */
  5012. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  5013. var draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  5014. var obj;\
  5015. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5016.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5017. }\
  5018. else\
  5019. {\
  5020.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5021. };\
  5022. var ctx = obj.getContext(\"2d\");\
  5023. var x,y;\
  5024. ctx.closePath();\
  5025. ctx.save();\
  5026. snap_x = dx;snap_y = dy;\
  5027. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  5028. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  5029.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  5030.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  5031.   ctx.closePath();\
  5032.  }\
  5033. }\
  5034. ctx.fill();\
  5035. ctx.restore();\
  5036. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  5037.     break;
  5038.  
  5039.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  5040. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  5041. var draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  5042.  var obj;\
  5043. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5044.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5045. }\
  5046. else\
  5047. {\
  5048.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5049. };\
  5050. var ctx = obj.getContext(\"2d\");\
  5051. var x;\
  5052. var y;\
  5053. ctx.save();\
  5054. ctx.lineWidth = linewidth;\
  5055. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5056. y = ysize;\
  5057. for( x = x0 ; x < xsize ; x = x + dx ){\
  5058.  ctx.moveTo(x,y0);\
  5059.  ctx.lineTo(xsize,y);\
  5060.  y = y - dy;\
  5061. };\
  5062. y = y0;\
  5063. for( x = xsize ; x > 0 ; x = x - dx){\
  5064.  ctx.moveTo(x,ysize);\
  5065.  ctx.lineTo(x0,y);\
  5066.  y = y + dy;\
  5067. };\
  5068. x = x0;\
  5069. for( y = y0 ; y < ysize ; y = y + dy ){\
  5070.  ctx.moveTo(xsize,y);\
  5071.  ctx.lineTo(x,ysize);\
  5072.  x = x + dx;\
  5073. };\
  5074. x = xsize;\
  5075. for( y = ysize ; y > y0 ; y = y - dy ){\
  5076.  ctx.moveTo(x,y0);\
  5077.  ctx.lineTo(x0,y);\
  5078.  x = x - dx;\
  5079. };\
  5080. ctx.stroke();\
  5081. ctx.restore();\
  5082. return;\
  5083. }",canvas_root_id,canvas_root_id,canvas_root_id);
  5084.     break;
  5085.  
  5086.     case DRAW_HATCHFILL:/* not used for userdraw */
  5087. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  5088. var draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  5089.  var obj;\
  5090. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5091.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5092. }\
  5093. else\
  5094. {\
  5095.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5096. };\
  5097. var ctx = obj.getContext(\"2d\");\
  5098. var x;\
  5099. var y;\
  5100. ctx.save();\
  5101. ctx.lineWidth = linewidth;\
  5102. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5103. y = ysize;\
  5104. for( x = x0 ; x < xsize ; x = x + dx ){\
  5105.  ctx.moveTo(x,y0);\
  5106.  ctx.lineTo(xsize,y);\
  5107.  y = y - dy;\
  5108. };\
  5109. y = y0;\
  5110. for( x = xsize ; x >= dx ; x = x - dx){\
  5111.  ctx.moveTo(x,ysize);\
  5112.  ctx.lineTo(x0,y);\
  5113.  y = y + dy;\
  5114. };\
  5115. ctx.stroke();\
  5116. ctx.restore();\
  5117. return;\
  5118. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5119.     break;
  5120.     case DRAW_CIRCLES:/*  used for userdraw */
  5121. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  5122. var draw_circles = function(ctx,x_points,y_points,radius,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5123. ctx.save();\
  5124. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5125. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5126. ctx.lineWidth = line_width;\
  5127. for(var p = 0 ; p < x_points.length ; p++ ){\
  5128.  ctx.beginPath();\
  5129.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  5130.  ctx.closePath();\
  5131.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5132.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5133.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5134.  ctx.stroke();\
  5135. }\
  5136. ctx.restore();\
  5137. return;\
  5138. };");
  5139.     break;
  5140.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  5141. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  5142. var draw_polyline = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5143. ctx.save();\
  5144. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5145. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5146. ctx.lineWidth = line_width;\
  5147. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5148. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5149. ctx.clearRect(0,0,xsize,ysize);\
  5150. ctx.beginPath();\
  5151. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  5152.  ctx.moveTo(x_points[p],y_points[p]);\
  5153.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5154. }\
  5155. ctx.closePath();\
  5156. ctx.stroke();\
  5157. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5158. for(var p = 0 ; p < x_points.length ; p++ ){\
  5159.  ctx.beginPath();\
  5160.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  5161.  ctx.closePath();ctx.fill();ctx.stroke();\
  5162. };\
  5163. ctx.restore();\
  5164. return;\
  5165. };");
  5166.     break;
  5167.  
  5168.     case DRAW_SEGMENTS:/*  used for userdraw */
  5169. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  5170. var draw_segments = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5171. ctx.save();\
  5172. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5173. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5174. ctx.lineWidth = line_width;\
  5175. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5176. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5177. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5178.  ctx.beginPath();\
  5179.  ctx.moveTo(x_points[p],y_points[p]);\
  5180.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5181.  ctx.closePath();\
  5182.  ctx.stroke();\
  5183.  }\
  5184.  ctx.restore();\
  5185.  return;\
  5186. };");
  5187.     break;
  5188.  
  5189.     case DRAW_LINES:/*  used for userdraw */
  5190. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  5191. function calc_line(x1,x2,y1,y2){\
  5192. var marge = 2;\
  5193. if(x1 < x2+marge && x1>x2-marge){\
  5194.  return [x1,0,x1,ysize];\
  5195. };\
  5196. if(y1 < y2+marge && y1>y2-marge){\
  5197.  return [0,y1,xsize,y1];\
  5198. };\
  5199. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  5200. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  5201. return [0,Y1,xsize,Y2];\
  5202. };\
  5203. var draw_lines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5204. ctx.save();\
  5205. var line = new Array(4);\
  5206. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5207. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5208. ctx.lineWidth = line_width;\
  5209. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5210. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5211. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5212.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  5213.  ctx.beginPath();\
  5214.  ctx.moveTo(line[0],line[1]);\
  5215.  ctx.lineTo(line[2],line[3]);\
  5216.  ctx.closePath();\
  5217.  ctx.stroke();\
  5218.  }\
  5219.  ctx.restore();\
  5220.  return;\
  5221. };");
  5222.     break;
  5223.  
  5224.     case DRAW_DEMILINES:/*  used for userdraw */
  5225. fprintf(js_include_file,"\n<!-- draw demilines -->\n\
  5226. function find_inf_point(x1,y1,x2,y2){\
  5227. if(x1<x2+2 && x1>x2-2){if(y1<y2){return [x1,y1,x1,ysize];}else{return [x1,0,x1,y1];};};\
  5228. var rc = (y2 - y1)/(x2 - x1);var q = y1 - (x1)*rc;\
  5229. if( x1 < x2 ){ return [x1,y1,xsize,rc*xsize+q];}else{return [x1,y1,0,q];};\
  5230. };\
  5231. var draw_demilines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5232. ctx.save();\
  5233. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5234. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5235. ctx.lineWidth = line_width;\
  5236. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5237. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5238. var pair = new Array(4);\
  5239. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5240.  pair = find_inf_point(x_points[p],y_points[p],x_points[p+1],y_points[p+1]);\
  5241.  ctx.beginPath();\
  5242.  ctx.moveTo(pair[0],pair[1]);\
  5243.  ctx.lineTo(pair[2],pair[3]);\
  5244.  ctx.closePath();\
  5245.  ctx.stroke();\
  5246.  }\
  5247.  ctx.restore();\
  5248.  return;\
  5249. };");
  5250.     break;
  5251.  
  5252.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  5253. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  5254. var draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  5255. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5256. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5257. ctx.lineWidth = line_width;\
  5258. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5259. var x1,x2,y1,y2;\
  5260. for(var p = 0 ; p < x_points.length ; p++ ){\
  5261.  x1 = x_points[p] - crosshair_size;\
  5262.  x2 = x_points[p] + crosshair_size;\
  5263.  y1 = y_points[p] - crosshair_size;\
  5264.  y2 = y_points[p] + crosshair_size;\
  5265.  ctx.beginPath();\
  5266.  ctx.moveTo(x1,y1);\
  5267.  ctx.lineTo(x2,y2);\
  5268.  ctx.closePath();\
  5269.  ctx.stroke();\
  5270.  ctx.beginPath();\
  5271.  ctx.moveTo(x2,y1);\
  5272.  ctx.lineTo(x1,y2);\
  5273.  ctx.closePath();\
  5274.  ctx.stroke();\
  5275. }\
  5276. ctx.restore();\
  5277.  return;\
  5278. };");
  5279.     break;
  5280.  
  5281.     case DRAW_RECTS:/*  used for userdraw */
  5282. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  5283. var draw_rects = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  5284. ctx.save();\
  5285. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5286. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5287. ctx.lineWidth = line_width;\
  5288. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  5289. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  5290. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  5291.  ctx.beginPath();\
  5292.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  5293.  ctx.closePath();\
  5294.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5295.  ctx.stroke();\
  5296. };\
  5297. ctx.restore();\
  5298. return;\
  5299. };");
  5300.     break;
  5301.  
  5302.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  5303. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  5304. var draw_roundrects = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  5305. ctx.save();\
  5306. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5307. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5308. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5309. var x,y,w,h,r;\
  5310. for(var p = 0; p < x_points.length; p = p+2){\
  5311.  x = x_points[p];y = y_points[p];w = x_points[p+1] - x;h = y_points[p+1] - y;r = parseInt(0.1*w);\
  5312.  ctx.beginPath();ctx.moveTo(x + r, y);\
  5313.  ctx.lineTo(x + w - r, y);\
  5314.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  5315.  ctx.lineTo(x + w, y + h - r);\
  5316.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  5317.  ctx.lineTo(x + r, y + h);\
  5318.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  5319.  ctx.lineTo(x, y + r);\
  5320.  ctx.quadraticCurveTo(x, y, x + r, y);\
  5321.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  5322.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5323.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  5324.  ctx.stroke();\
  5325. }\
  5326. ctx.restore();\
  5327. };");
  5328.     break;
  5329.  
  5330.     case DRAW_ELLIPSES:/* not  used for userdraw */
  5331. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  5332. var draw_ellipses = function(canvas_type,x_points,y_points,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  5333. var obj;\
  5334. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5335.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5336. }\
  5337. else\
  5338. {\
  5339.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5340. };\
  5341. var ctx = obj.getContext(\"2d\");\
  5342. ctx.save();\
  5343. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5344. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5345. var cx,cy,ry,rx;\
  5346. ctx.lineWidth = line_width;\
  5347. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  5348. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5349. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5350. for(var p=0;p< x_points.length;p = p+2){\
  5351.  ctx.beginPath();\
  5352.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  5353.  ctx.translate(cx - rx, cy - ry);\
  5354.  ctx.scale(rx, ry);\
  5355.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  5356.  if( use_filled == 1 ){ctx.fill();}\
  5357.  ctx.stroke();\
  5358. };\
  5359. ctx.restore();\
  5360. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5361.     break;
  5362.  
  5363.     case DRAW_PATHS: /*  used for userdraw */
  5364. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  5365. var draw_paths = function(ctx,x_points,y_points,line_width,closed_path,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  5366. ctx.save();\
  5367. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5368. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5369. ctx.lineWidth = line_width;\
  5370. ctx.lineJoin = \"round\";\
  5371. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5372. ctx.beginPath();\
  5373. ctx.moveTo(x_points[0],y_points[0]);\
  5374. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  5375. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  5376. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5377. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5378. ctx.stroke();\
  5379. ctx.restore();\
  5380. return;\
  5381. };");
  5382.  
  5383.     break;
  5384.     case DRAW_ARROWS:/*  used for userdraw */
  5385. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  5386. var draw_arrows = function(ctx,x_points,y_points,arrow_head,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,type,use_rotate,angle,use_affine,affine_matrix){\
  5387. ctx.save();\
  5388. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5389. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5390. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5391. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5392. ctx.lineWidth = line_width;\
  5393. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5394. ctx.lineCap = \"round\";\
  5395. var x1,y1,x2,y2,dx,dy,len;\
  5396. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  5397.   ctx.save();\
  5398.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  5399.   len = Math.sqrt(dx*dx+dy*dy);\
  5400.   ctx.translate(x2,y2);\
  5401.   ctx.rotate(Math.atan2(dy,dx));\
  5402.   ctx.lineCap = \"round\";\
  5403.   ctx.beginPath();\
  5404.   ctx.moveTo(0,0);\
  5405.   ctx.lineTo(-len,0);\
  5406.   ctx.closePath();\
  5407.   ctx.stroke();\
  5408.   ctx.beginPath();\
  5409.   ctx.moveTo(0,0);\
  5410.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5411.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5412.   ctx.closePath();\
  5413.   ctx.fill();\
  5414.   ctx.restore();\
  5415.   if( type == 2 ){\
  5416.     ctx.save();\
  5417.     ctx.translate(x1,y1);\
  5418.     ctx.rotate(Math.atan2(-dy,-dx));\
  5419.     ctx.beginPath();\
  5420.     ctx.moveTo(0,0);\
  5421.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5422.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5423.     ctx.closePath();\
  5424.     ctx.stroke();\
  5425.     ctx.fill();\
  5426.     ctx.restore();\
  5427.   }\
  5428.  }\
  5429.  ctx.restore();\
  5430.  return;\
  5431. };");
  5432.     break;
  5433.  
  5434.     case DRAW_VIDEO:/* not  used for userdraw */
  5435. fprintf(js_include_file,"\n<!-- draw video -->\n\
  5436. var draw_video = function(canvas_root_id,x,y,w,h,URL){\
  5437. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5438. var video_div = document.createElement(\"div\");\
  5439. canvas_div.appendChild(video_div);\
  5440. video_div.style.position = \"absolute\";\
  5441. video_div.style.left = x+\"px\";\
  5442. video_div.style.top = y+\"px\";\
  5443. video_div.style.width = w+\"px\";\
  5444. video_div.style.height = h+\"px\";\
  5445. var video = document.createElement(\"video\");\
  5446. video_div.appendChild(video);\
  5447. video.style.width = w+\"px\";\
  5448. video.style.height = h+\"px\";\
  5449. video.autobuffer = true;\
  5450. video.controls = true;video.autoplay = false;\
  5451. var src = document.createElement(\"source\");\
  5452. src.type = \"video/mp4\";\
  5453. src.src = URL;\
  5454. video.appendChild(src);\
  5455. video.load();\
  5456. return;\
  5457. };");
  5458.     break;
  5459.  
  5460.     case DRAW_AUDIO:/* not used for userdraw */
  5461. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  5462. var draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  5463. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5464. var audio_div = document.createElement(\"div\");\
  5465. canvas_div.appendChild(audio_div);\
  5466. audio_div.style.position = \"absolute\";\
  5467. audio_div.style.left = x+\"px\";\
  5468. audio_div.style.top = y+\"px\";\
  5469. audio_div.style.width = w+\"px\";\
  5470. audio_div.style.height = h+\"px\";\
  5471. var audio = document.createElement(\"audio\");\
  5472. audio_div.appendChild(audio);\
  5473. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  5474. audio.autobuffer = true;\
  5475. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  5476. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  5477. var src1 = document.createElement(\"source\");\
  5478. src1.type = \"audio/ogg\";\
  5479. src1.src = URL1;\
  5480. audio.appendChild(src1);\
  5481. var src2 = document.createElement(\"source\");\
  5482. src2.type = \"audio/mpeg\";\
  5483. src2.src = URL2;\
  5484. audio.appendChild(src2);\
  5485. audio.load();\
  5486. return;\
  5487. };");
  5488.     break;
  5489.  
  5490.     case DRAW_HTTP:/* not  used for userdraw */
  5491. fprintf(js_include_file,"\n<!-- draw http -->\n\
  5492. var draw_http = function(canvas_root_id,x,y,w,h,URL){\
  5493. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5494. var http_div = document.createElement(\"div\");\
  5495. var iframe = document.createElement(\"iframe\");\
  5496. canvas_div.appendChild(http_div);\
  5497. http_div.appendChild(iframe);\
  5498. iframe.src = URL;\
  5499. iframe.setAttribute(\"width\",w);\
  5500. iframe.setAttribute(\"height\",h);\
  5501. return;\
  5502. };");
  5503.     break;
  5504.  
  5505.     case DRAW_XML:
  5506. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  5507. var draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  5508. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5509. var xml_div = document.createElement(\"div\");\
  5510. canvas_div.appendChild(xml_div);\
  5511. xml_div.innerHTML = mathml;\
  5512. if(onclick != 0){\
  5513.  xml_div.onclick = function(){\
  5514.   reply[0] = onclick;\
  5515.   alert(\"send \"+onclick+\" ?\");\
  5516.  };\
  5517. };\
  5518. xml_div.style.position = \"absolute\";\
  5519. xml_div.style.left = x+\"px\";\
  5520. xml_div.style.top = y+\"px\";\
  5521. xml_div.style.width = w+\"px\";\
  5522. xml_div.style.height = h+\"px\";\
  5523. return;\
  5524. };"
  5525. );
  5526.     break;
  5527.     case DRAW_SGRAPH:
  5528. /*
  5529.  xstart = given
  5530.  ystart = given
  5531.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  5532. */
  5533. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  5534. var draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  5535. var obj;if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){obj = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{ obj = create_canvas%d(canvas_type,xsize,ysize);};\
  5536. var ctx = obj.getContext(\"2d\");\
  5537. ctx.font = fontfamily;\
  5538. var minor_opacity = 0.8*opacity;\
  5539. ctx.clearRect(0,0,xsize,ysize);\
  5540. var zero_x = 0.1*xsize;\
  5541. var zero_y = 0.9*ysize;\
  5542. var snor_x;var snor_y;\
  5543. if( xstart != xmin){\
  5544.  snor_x = 0.1*xsize;\
  5545. }\
  5546. else\
  5547. {\
  5548.  snor_x = 0;\
  5549.  xstart = xmin;\
  5550. };\
  5551. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5552. ctx.lineWidth = 2;\
  5553. ctx.beginPath();\
  5554. ctx.moveTo(xsize,zero_y);\
  5555. ctx.lineTo(zero_x,zero_y);\
  5556. ctx.lineTo(zero_x,0);\
  5557. ctx.stroke();\
  5558. ctx.closePath();\
  5559. ctx.beginPath();\
  5560. ctx.moveTo(zero_x,zero_y);\
  5561. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  5562. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  5563. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  5564. ctx.lineTo(zero_x + snor_x,zero_y);\
  5565. ctx.stroke();\
  5566. ctx.closePath();\
  5567. ctx.beginPath();\
  5568. var num = xstart;\
  5569. var flipflop = 1;\
  5570. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  5571. var txtsize;var txt_marge=step_x - 5;\
  5572. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5573.  txtsize = ctx.measureText(num).width;\
  5574.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  5575.  if( flipflop == 1){\
  5576.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  5577.  }\
  5578.  else\
  5579.  {\
  5580.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  5581.  }\
  5582.  num = num + xmajor;\
  5583. };\
  5584. ctx.stroke();\
  5585. ctx.closePath();\
  5586. ctx.lineWidth = 1;\
  5587. ctx.beginPath();\
  5588. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5589.   ctx.moveTo(x,zero_y);\
  5590.   ctx.lineTo(x,0);\
  5591. };\
  5592. ctx.stroke();\
  5593. ctx.closePath();\
  5594. if( xminor > 1){\
  5595.  ctx.lineWidth = 0.5;\
  5596.  ctx.beginPath();\
  5597.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5598.  var minor_step_x = step_x / xminor;\
  5599.  var nx;\
  5600.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  5601.    num = 1;\
  5602.    for(var p = 1 ; p < xminor ; p++){\
  5603.     nx = x + num*minor_step_x;\
  5604.     ctx.moveTo(nx,zero_y);\
  5605.     ctx.lineTo(nx,0);\
  5606.     num++;\
  5607.    };\
  5608.  };\
  5609.  ctx.stroke();\
  5610.  ctx.closePath();\
  5611.  ctx.beginPath();\
  5612.  ctx.lineWidth = 2;\
  5613.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5614.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5615.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  5616.  };\
  5617.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  5618.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  5619.  };\
  5620.  ctx.stroke();\
  5621.  ctx.closePath();\
  5622.  ctx.lineWidth = 0.5;\
  5623. };\
  5624. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  5625. if( ystart != ymin){\
  5626.  snor_y = 0.1*ysize;\
  5627. }\
  5628. else\
  5629. {\
  5630.  snor_y = 0;\
  5631.  ystart = ymin;\
  5632. };\
  5633. ctx.lineWidth = 2;\
  5634. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5635. ctx.beginPath();\
  5636. ctx.moveTo(zero_x,zero_y);\
  5637. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  5638. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  5639. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  5640. ctx.lineTo(zero_x,zero_y - snor_y);\
  5641. ctx.stroke();\
  5642. ctx.closePath();\
  5643. ctx.beginPath();\
  5644. ctx.lineWidth = 1;\
  5645. num = ystart;\
  5646. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  5647. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  5648.  ctx.moveTo(zero_x,y);\
  5649.  ctx.lineTo(xsize,y);\
  5650.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  5651.  num = num + ymajor;\
  5652. };\
  5653. ctx.stroke();\
  5654. ctx.closePath();\
  5655. if( yminor > 1){\
  5656.  ctx.lineWidth = 0.5;\
  5657.  ctx.beginPath();\
  5658.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5659.  var minor_step_y = step_y / yminor;\
  5660.  var ny;\
  5661.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  5662.   num = 1;\
  5663.   for(var p = 1 ;p < yminor;p++){\
  5664.     ny = y + num*minor_step_y;\
  5665.     ctx.moveTo(zero_x,ny);\
  5666.     ctx.lineTo(xsize,ny);\
  5667.     num++;\
  5668.    };\
  5669.  };\
  5670.  ctx.stroke();\
  5671.  ctx.closePath();\
  5672.  ctx.lineWidth = 2;\
  5673.  ctx.beginPath();\
  5674.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5675.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  5676.   ctx.moveTo(zero_x,y);\
  5677.   ctx.lineTo(zero_x+12,y);\
  5678.  };\
  5679.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  5680.   ctx.moveTo(zero_x,y);\
  5681.   ctx.lineTo(zero_x+6,y);\
  5682.  };\
  5683.  ctx.stroke();\
  5684.  ctx.closePath();\
  5685. };\
  5686. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  5687. if( typeof legend%d  !== 'undefined' ){\
  5688.  ctx.globalAlpha = 1.0;\
  5689.  var y_offset = 2*font_size;\
  5690.  var txt;var txt_size;\
  5691.  var x_offset = xsize - 2*font_size;\
  5692.  var l_length = legend%d.length;var barcolor = new Array();\
  5693.  if( typeof legendcolors%d !== 'undefined' ){\
  5694.   for(var p = 0 ; p < l_length ; p++){\
  5695.    barcolor[p] = legendcolors%d[p];\
  5696.   };\
  5697.  }else{\
  5698.   if( barcolor.length == 0 ){\
  5699.    for(var p = 0 ; p < l_length ; p++){\
  5700.     barcolor[p] = stroke_color;\
  5701.    };\
  5702.   };\
  5703.  };\
  5704.  for(var p = 0; p < l_length; p++){\
  5705.   ctx.fillStyle = barcolor[p];\
  5706.   txt = legend%d[p];\
  5707.   txt_size = ctx.measureText(txt).width;\
  5708.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5709.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5710.  };\
  5711. };\
  5712. if( typeof xaxislabel !== 'undefined' ){\
  5713.   ctx.fillStyle = \'#000000\';\
  5714.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  5715.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  5716. };\
  5717. if( typeof yaxislabel !== 'undefined'){\
  5718.   ctx.save();\
  5719.   ctx.fillStyle = \'#000000\';\
  5720.   var txt_size = ctx.measureText(yaxislabel).width;\
  5721.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  5722.   ctx.rotate(-0.5*Math.PI);\
  5723.   ctx.fillText(yaxislabel,0,0);\
  5724.   ctx.restore();\
  5725. };\
  5726. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5727.     break;
  5728.  
  5729.     case DRAW_GRID:/* not used for userdraw */
  5730. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  5731. var draw_grid%d = function(canvas_type,precision,stroke_opacity,xmajor,ymajor,xminor,yminor,tics_length,line_width,stroke_color,axis_color,font_size,font_family,use_axis,use_axis_numbering,use_rotate,angle,use_affine,affine_matrix,use_dashed,dashtype0,dashtype1,font_color,fill_opacity){\
  5732. var obj;if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){obj = document.getElementById(\"wims_canvas%d\"+canvas_type);}else{obj = create_canvas%d(canvas_type,xsize,ysize);};\
  5733. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  5734. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5735. ctx.save();\
  5736. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5737. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  5738. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5739. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  5740. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  5741. ctx.font = font_family;\
  5742. var barcolor = new Array();\
  5743. var xstep = xsize*xmajor/(xmax - xmin);\
  5744. var ystep = ysize*ymajor/(ymax - ymin);\
  5745. var x2step = xstep / xminor;\
  5746. var y2step = ystep / yminor;\
  5747. var zero_x = x2px(0);;var zero_y = y2px(0);var f_x;var f_y;\
  5748. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;}\
  5749. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;}\
  5750. ctx.beginPath();\
  5751. ctx.lineWidth = line_width;\
  5752. ctx.strokeStyle = stroke_color;\
  5753. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5754. ctx.moveTo(p,0);\
  5755. ctx.lineTo(p,ysize);\
  5756. };\
  5757. for(var p = zero_x ; p > 0; p = p - xstep){\
  5758. ctx.moveTo(p,0);\
  5759. ctx.lineTo(p,ysize);\
  5760. };\
  5761. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5762. ctx.moveTo(0,p);\
  5763. ctx.lineTo(xsize,p);\
  5764. };\
  5765. for(var p = zero_y ; p > 0; p = p - ystep){\
  5766. ctx.moveTo(0,p);\
  5767. ctx.lineTo(xsize,p);\
  5768. };\
  5769. if( typeof xaxislabel !== 'undefined' ){\
  5770. ctx.save();\
  5771. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5772. var corr =  ctx.measureText(xaxislabel).width;\
  5773. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  5774. ctx.restore();\
  5775. };\
  5776. if( typeof yaxislabel !== 'undefined' ){\
  5777. ctx.save();\
  5778. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5779. var corr =  ctx.measureText(yaxislabel).width;\
  5780. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  5781. ctx.rotate(-0.5*Math.PI);\
  5782. ctx.fillText(yaxislabel,0,0);\
  5783. ctx.restore();\
  5784. };\
  5785. ctx.stroke();\
  5786. ctx.closePath();\
  5787. if( use_axis == 1 ){\
  5788. ctx.save();\
  5789. ctx.beginPath();\
  5790. ctx.strokeStyle = stroke_color;\
  5791. ctx.lineWidth = 0.6*line_width;\
  5792. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5793.  ctx.moveTo(p,0);\
  5794.  ctx.lineTo(p,ysize);\
  5795. };\
  5796. for(var p = zero_x ; p > 0; p = p - x2step){\
  5797.  ctx.moveTo(p,0);\
  5798.  ctx.lineTo(p,ysize);\
  5799. };\
  5800. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5801.  ctx.moveTo(0,p);\
  5802.  ctx.lineTo(xsize,p);\
  5803. };\
  5804. for(var p = zero_y ; p > 0; p = p - y2step){\
  5805.  ctx.moveTo(0,p);\
  5806.  ctx.lineTo(xsize,p);\
  5807. };\
  5808. ctx.stroke();\
  5809. ctx.closePath();\
  5810. ctx.beginPath();\
  5811. ctx.lineWidth = 2*line_width;\
  5812. ctx.strokeStyle = axis_color;\
  5813. ctx.moveTo(0,zero_y);\
  5814. ctx.lineTo(xsize,zero_y);\
  5815. ctx.moveTo(zero_x,0);\
  5816. ctx.lineTo(zero_x,ysize);\
  5817. ctx.stroke();\
  5818. ctx.closePath();\
  5819. ctx.lineWidth = line_width+0.5;\
  5820. ctx.beginPath();\
  5821. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5822.  ctx.moveTo(p,zero_y-tics_length);\
  5823.  ctx.lineTo(p,zero_y+tics_length);\
  5824. };\
  5825. for(var p = zero_x ; p > 0; p = p - xstep){\
  5826.  ctx.moveTo(p,zero_y-tics_length);\
  5827.  ctx.lineTo(p,zero_y+tics_length);\
  5828. };\
  5829. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5830.  ctx.moveTo(zero_x-tics_length,p);\
  5831.  ctx.lineTo(zero_x+tics_length,p);\
  5832. };\
  5833. for(var p = zero_y ; p > 0; p = p - ystep){\
  5834.  ctx.moveTo(zero_x-tics_length,p);\
  5835.  ctx.lineTo(zero_x+tics_length,p);\
  5836. };\
  5837. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5838.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5839.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5840. };\
  5841. for(var p = zero_x ; p > 0; p = p - x2step){\
  5842.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5843.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5844. };\
  5845. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5846.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5847.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5848. };\
  5849. for(var p = zero_y ; p > 0; p = p - y2step){\
  5850.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5851.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5852. };\
  5853. ctx.stroke();\
  5854. ctx.closePath();\
  5855. ctx.restore();\
  5856. };\
  5857. if( use_axis_numbering == 1 ){\
  5858. ctx.save();\
  5859. ctx.fillColor = axis_color;\
  5860. ctx.strokeStyle = axis_color;\
  5861. ctx.lineWidth = 2*line_width;\
  5862. ctx.font = font_family;\
  5863. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5864. if( x_strings != null ){\
  5865.  var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5866.  ctx.beginPath();\
  5867.  for(var p = 0 ; p < len ; p = p+2){\
  5868.   var x_nums = x2px(eval(x_strings[p]));\
  5869.   var x_text = x_strings[p+1];\
  5870.   corr = ctx.measureText(x_text).width;\
  5871.   skip = 1.2*corr/xstep;\
  5872.   if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5873.   if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5874.   ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5875.   ctx.moveTo(x_nums,zero_y - tics_length);\
  5876.   ctx.lineTo(x_nums,zero_y + tics_length);\
  5877.  };\
  5878.  ctx.closePath();\
  5879. }\
  5880. else\
  5881. {\
  5882.  skip = 1;cnt = px2x(zero_x);\
  5883.  prec = Math.log(precision)/(Math.log(10));\
  5884.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  5885.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5886.   if(skip == 0 ){\
  5887.    disp_cnt = cnt.toFixed(prec);\
  5888.    corr = ctx.measureText(disp_cnt).width;\
  5889.    skip = parseInt(1.2*corr/xstep);\
  5890.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5891.   }\
  5892.   else\
  5893.   {\
  5894.    skip--;\
  5895.   };\
  5896.   cnt = cnt + xmajor;\
  5897.  };\
  5898.  cnt = px2x(zero_x);skip = 1;\
  5899.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5900.   if(skip == 0 ){\
  5901.    disp_cnt = cnt.toFixed(prec);\
  5902.    corr = ctx.measureText(disp_cnt).width;\
  5903.    skip = parseInt(1.2*corr/xstep);\
  5904.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5905.   }\
  5906.   else\
  5907.   {\
  5908.    skip--;\
  5909.   };\
  5910.   cnt = cnt - xmajor;\
  5911.  };\
  5912. };\
  5913. if( y_strings != null ){\
  5914.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5915.  ctx.beginPath();\
  5916.  for(var p = 0 ; p < len ; p = p+2){\
  5917.   var y_nums = y2px(eval(y_strings[p]));\
  5918.   var y_text = y_strings[p+1];\
  5919.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5920.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5921.   ctx.fillText(y_text,zero_x - corr,y_nums + 0.5*font_size);\
  5922.   ctx.moveTo(zero_x - tics_length,y_nums);\
  5923.   ctx.lineTo(zero_x + tics_length,y_nums);\
  5924.  };\
  5925.  ctx.closePath();\
  5926. }\
  5927. else\
  5928. {\
  5929.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5930.  cnt = px2y(zero_y);skip = 1;\
  5931.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5932.   if(skip == 0 ){\
  5933.    skip = parseInt(1.4*font_size/ystep);\
  5934.    disp_cnt = cnt.toFixed(prec);\
  5935.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5936.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5937.   }\
  5938.   else\
  5939.   {\
  5940.    skip--;\
  5941.   };\
  5942.   cnt = cnt - ymajor;\
  5943.  };\
  5944.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  5945.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5946.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5947.   if(skip == 0 ){\
  5948.    skip = parseInt(1.4*font_size/ystep);\
  5949.    disp_cnt = cnt.toFixed(prec);\
  5950.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5951.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5952.   }\
  5953.   else\
  5954.   {\
  5955.    skip--;\
  5956.   };\
  5957.   cnt = cnt + ymajor;\
  5958.  };\
  5959. };\
  5960. ctx.stroke();\
  5961. ctx.restore();\
  5962. };\
  5963. if( typeof legend0  !== 'undefined' ){\
  5964. ctx.save();\
  5965. ctx.globalAlpha = 1.0;\
  5966. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5967. var y_offset = 2*font_size;\
  5968. var txt;var txt_size;\
  5969. var x_offset = xsize - 2*font_size;\
  5970. var l_length = legend0.length;\
  5971. if( typeof legendcolors0 !== 'undefined' ){\
  5972.  for(var p = 0 ; p < l_length ; p++){\
  5973.    barcolor[p] = legendcolors0[p];\
  5974.  };\
  5975. }\
  5976. else\
  5977. {\
  5978.  if( barcolor.length == 0 ){\
  5979.   for(var p = 0 ; p < l_length ; p++){\
  5980.    barcolor[p] = stroke_color;\
  5981.   };\
  5982.  };\
  5983. };\
  5984. for(var p = 0; p < l_length; p++){\
  5985.  ctx.fillStyle = barcolor[p];\
  5986.  txt = legend0[p];\
  5987.  txt_size = ctx.measureText(txt).width;\
  5988.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  5989.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5990. };\
  5991. ctx.restore();\
  5992. };\
  5993. if( typeof barchart_0  !== 'undefined' ){\
  5994. ctx.save();\
  5995. var num_barcharts = 0;\
  5996. var bar_name = eval('barchart_0');\
  5997. while( typeof bar_name !== 'undefined' ){\
  5998.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  5999. };\
  6000. var bar_width = parseInt(0.8*xstep/(num_barcharts));\
  6001. for(var i=0 ; i< num_barcharts ; i++){\
  6002.  bar_name = eval('barchart_'+i);\
  6003.  var bar_x = new Array();\
  6004.  var bar_y = new Array();\
  6005.  var lb = bar_name.length;\
  6006.  var idx = 0;\
  6007.  var dx = parseInt(0.5*i*bar_width);\
  6008.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  6009.   bar_x[idx] = x2px(bar_name[p]);\
  6010.   bar_y[idx] = y2px(bar_name[p+1]);\
  6011.   barcolor[idx] = bar_name[p+2];\
  6012.   idx++;\
  6013.  };\
  6014.  ctx.globalAlpha = fill_opacity;\
  6015.  ctx.beginPath();\
  6016.  for( var p = 0; p < idx ; p++ ){\
  6017.   ctx.strokeStyle = barcolor[p];\
  6018.   ctx.fillStyle = barcolor[p];\
  6019.   ctx.rect(bar_x[p]-0.4*xstep+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  6020.  };\
  6021.  ctx.fill();\
  6022.  ctx.stroke();\
  6023.  ctx.closePath();\
  6024. };\
  6025. ctx.restore();\
  6026. };\
  6027. if( typeof linegraph_0 !== 'undefined' ){\
  6028. ctx.save();\
  6029. ctx.globalAlpha = 1.0;\
  6030. var i = 0;\
  6031. var line_name = eval('linegraph_'+i);\
  6032. while ( typeof line_name !== 'undefined' ){\
  6033.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  6034.  ctx.lineWidth = parseInt(line_name[1]);\
  6035.  if(line_name[2] == \"1\"){\
  6036.   var d1 = parseInt(line_name[3]);\
  6037.   var d2 = parseInt(line_name[4]);\
  6038.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  6039.  }\
  6040.  else\
  6041.  {\
  6042.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  6043.  if(ctx.mozDash){ctx.mozDash = null;}\
  6044.  };\
  6045.  var data_x = new Array();\
  6046.  var data_y = new Array();\
  6047.  var lb = line_name.length;\
  6048.  var idx = 0;\
  6049.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  6050.   data_x[idx] = x2px(line_name[p]);\
  6051.   data_y[idx] = y2px(line_name[p+1]);\
  6052.   idx++;\
  6053.  };\
  6054.  for( var p = 0; p < idx ; p++){\
  6055.   ctx.beginPath();\
  6056.   ctx.moveTo(data_x[p],data_y[p]);\
  6057.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  6058.   ctx.stroke();\
  6059.   ctx.closePath();\
  6060.  };\
  6061.  i++;\
  6062.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  6063. };\
  6064. ctx.restore();\
  6065. };\
  6066. return;\
  6067. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6068.     break;
  6069.  
  6070.     case DRAW_PIECHART:
  6071. fprintf(js_include_file,"\n<!-- draw piecharts -->\n\
  6072. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family){\
  6073. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6074.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6075. }\
  6076. else\
  6077. {\
  6078.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6079. };\
  6080. var ld = data_color_list.length;\
  6081. var sum = 0;\
  6082. var idx = 0;\
  6083. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  6084. var colors = new Array();\
  6085. var data = new Array();\
  6086. for(var p = 0;p < ld; p = p + 2){\
  6087.  data[idx] = parseFloat(data_color_list[p]);\
  6088.  sum = sum + data[idx];\
  6089.  colors[idx] = data_color_list[p+1];\
  6090.  idx++;\
  6091. };\
  6092. var ctx = obj.getContext(\"2d\");\
  6093. ctx.save();\
  6094. var angle;\
  6095. var angle_end = 0;\
  6096. var offset = Math.PI / 2;\
  6097. ctx.globalAlpha = fill_opacity;\
  6098. for(var p=0; p < idx; p++){\
  6099.  ctx.beginPath();\
  6100.  ctx.fillStyle = colors[p];\
  6101.  ctx.moveTo(x_center,y_center);\
  6102.  angle = Math.PI * (2 * data[p] / sum);\
  6103.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  6104.  ctx.lineTo(x_center, y_center);\
  6105.  ctx.fill();\
  6106.  ctx.closePath();\
  6107.  angle_end  = angle_end + angle;\
  6108. };\
  6109. if(typeof legend0 !== 'undefined'){\
  6110.  var legenda = eval(\"legend\"+legend_cnt);\
  6111.  ctx.globalAlpha = 1.0;\
  6112.  ctx.font = font_family;\
  6113.  var y_offset = font_size; \
  6114.  var x_offset = 0;\
  6115.  var txt;var txt_size;\
  6116.  for(var p = 0; p < idx; p++){\
  6117.   ctx.fillStyle = colors[p];\
  6118.   txt = legenda[p];\
  6119.   txt_size = ctx.measureText(txt).width;\
  6120.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  6121.   ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  6122.   y_offset = parseInt(y_offset + 1.5*font_size);\
  6123.  };\
  6124. };\
  6125. ctx.restore();\
  6126. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6127.  
  6128.     break;
  6129.     case DRAW_ARCS:
  6130. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  6131. var draw_arc = function(ctx,xc,yc,r,start,end,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_affine,affine_matrix){\
  6132. ctx.save();\
  6133. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  6134. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  6135. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  6136. if(end < start){var tmp = end;end = start;start=tmp;};\
  6137. start = 360 - start;\
  6138. end = 360 - end;\
  6139. ctx.lineWidth = line_width;\
  6140. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6141. ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  6142. ctx.beginPath();\
  6143. ctx.moveTo(xc,yc);\
  6144. ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  6145. ctx.lineTo(xc,yc);\
  6146. ctx.closePath();\
  6147. if( use_filled == 1 ){\
  6148.  ctx.fill();\
  6149. };\
  6150. ctx.stroke();\
  6151. ctx.restore();\
  6152. };");
  6153.  
  6154.     break;
  6155.     case DRAW_CENTERSTRING:
  6156. fprintf(js_include_file,"\n<!-- draw centerstring -->\n\
  6157. var draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  6158. var obj;\
  6159. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6160.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6161. }\
  6162. else\
  6163. {\
  6164.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6165. };\
  6166. var ctx = obj.getContext(\"2d\");\
  6167. ctx.save();\
  6168. ctx.font = font_family;\
  6169. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6170. var stringwidth = ctx.measureText(text).width;\
  6171. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  6172. ctx.fillText(text,x,y2px(y));\
  6173. return;\
  6174. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6175.     break;
  6176.     case DRAW_TEXTS:
  6177. fprintf(js_include_file,"\n<!-- draw text -->\n\
  6178. var draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_affine,affine_matrix){\
  6179.  var obj;\
  6180.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6181.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6182.  }\
  6183.  else\
  6184.  {\
  6185.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  6186.  };\
  6187.  var ctx = obj.getContext(\"2d\");\
  6188.  if(angle2 == 0 && angle != 0){\
  6189.   ctx.save();\
  6190.   if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6191.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6192.  };\
  6193.  if( font_family.indexOf('px') != null ){\
  6194.   ctx.font = font_family;\
  6195.  }\
  6196.  else\
  6197.  {\
  6198.   ctx.font = font_family;\
  6199.  };\
  6200.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6201.  if(angle2 != 0){\
  6202.   ctx.save();\
  6203.   ctx.translate(x,y);\
  6204.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  6205.   ctx.fillText(text,0,0);\
  6206.   ctx.restore();\
  6207.  }else{ctx.fillText(text,x,y);};\
  6208. ctx.restore();\
  6209. return;\
  6210. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6211.     break;
  6212.     case DRAW_CURVE:
  6213. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  6214. var draw_curve = function(canvas_type,type,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,use_rotate,angle,use_affine,affine_matrix){\
  6215. var obj;\
  6216. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6217.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6218. }\
  6219. else\
  6220. {\
  6221.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6222. };\
  6223. var ctx = obj.getContext(\"2d\");\
  6224. ctx.save();\
  6225. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6226. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6227. ctx.beginPath();ctx.lineWidth = line_width;\
  6228. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  6229. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6230. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  6231. for(var p = 1 ; p < x_points.length ; p++){\
  6232.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  6233.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  6234.  }\
  6235.  else\
  6236.  {\
  6237.   ctx.stroke();\
  6238.   ctx.beginPath();\
  6239.   p++;\
  6240.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  6241.  };\
  6242. };\
  6243. ctx.stroke();\
  6244. ctx.restore();\
  6245. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6246.     break;
  6247.  
  6248.     case DRAW_INPUTS:
  6249. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  6250. var draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  6251. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6252. var input = document.createElement(\"input\");\
  6253. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6254. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6255. input.setAttribute(\"size\",size);\
  6256. input.setAttribute(\"value\",value);\
  6257. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  6258. canvas_div.appendChild(input);};");
  6259.     break;
  6260.  
  6261.     case DRAW_TEXTAREAS:
  6262. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  6263. var draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  6264. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6265. var textarea = document.createElement(\"textarea\");\
  6266. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6267. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6268. textarea.setAttribute(\"cols\",cols);\
  6269. textarea.setAttribute(\"rows\",rows);\
  6270. textarea.value = value;\
  6271. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  6272. canvas_div.appendChild(textarea);};");
  6273.     break;
  6274.  
  6275. case DRAW_PIXELS:
  6276. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  6277. var draw_setpixel = function(x,y,color,opacity,pixelsize){\
  6278. var canvas = create_canvas%d(10,xsize,ysize);\
  6279. var d = 0.5*pixelsize;\
  6280. var ctx = canvas.getContext(\"2d\");\
  6281. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  6282. ctx.clearRect(0,0,xsize,ysize);\
  6283. for(var p=0; p<x.length;p++){\
  6284.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  6285. };\
  6286. ctx.fill();ctx.stroke();\
  6287. };",canvas_root_id);
  6288. break;
  6289.  
  6290. case DRAW_CLOCK:
  6291. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  6292. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  6293. var clock_ctx = clock_canvas.getContext(\"2d\");\
  6294. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  6295. clock_ctx.clearRect(xc - radius,yc - radius,2*radius,2*radius);\
  6296. clock_ctx.save();\
  6297. clock_ctx.globalAlpha = clock_bg_opacity;\
  6298. this.type = type || 0;\
  6299. this.interaction = interaction || 0;\
  6300. this.H = H;\
  6301. this.M = M;\
  6302. this.S = S;\
  6303. if(this.S == -1){this.S = 59;this.M = this.M - 1;};\
  6304. if(this.M == -1){this.M = 59;this.H = this.H - 1;};\
  6305. if(this.H == -1){this.H = 11;};\
  6306. this.xc = xc || xsize/2;\
  6307. this.yc = yc || ysize/2;\
  6308. this.radius = radius || xsize/4;\
  6309. var font_size = parseInt(0.2*this.radius);\
  6310. this.H_color = h_color || \"blue\";\
  6311. this.M_color = m_color || \"blue\";\
  6312. this.S_color = s_color || \"blue\";\
  6313. this.fg_color = fg_color || \"red\";\
  6314. this.bg_color = bg_color || \"white\";\
  6315. clock_ctx.translate(this.xc,this.yc);\
  6316. clock_ctx.beginPath();\
  6317. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  6318. clock_ctx.fillStyle = this.bg_color;\
  6319. clock_ctx.fill();\
  6320. clock_ctx.closePath();\
  6321. clock_ctx.beginPath();\
  6322. clock_ctx.font = font_size+\"px Arial\";\
  6323. clock_ctx.fillStyle = this.fg_color;\
  6324. clock_ctx.textAlign = \"center\";\
  6325. clock_ctx.textBaseline = 'middle';\
  6326. var angle;var x1,y1,x2,y2;\
  6327. var angle_cos;var angle_sin;\
  6328. clock_ctx.globalAlpha = clock_fg_opacity;\
  6329. switch(type){\
  6330. case 0:clock_ctx.beginPath();\
  6331. for(var p = 1; p <= 12 ; p++){\
  6332.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6333.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6334.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6335.  clock_ctx.moveTo(x1,y1);\
  6336.  clock_ctx.lineTo(x2,y2);\
  6337. };\
  6338. for(var p = 1; p <= 60 ; p++){\
  6339.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6340.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6341.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6342.  clock_ctx.moveTo(x1,y1);\
  6343.  clock_ctx.lineTo(x2,y2);\
  6344. };\
  6345. clock_ctx.closePath();\
  6346. clock_ctx.stroke();\
  6347. break;\
  6348. case 1:\
  6349. for(var p= 1; p <= 12 ; p++){ angle = (p - 3) * (Math.PI * 2) / 12;x1 = 0.9*this.radius*Math.cos(angle);y1 = 0.9*this.radius*Math.sin(angle);clock_ctx.fillText(p, x1, y1);};break;\
  6350. case 2:\
  6351. for(var p= 1; p <= 12 ; p++){ angle = (p - 3) * (Math.PI * 2) / 12;x1 = 0.8*this.radius*Math.cos(angle);y1 = 0.8*this.radius*Math.sin(angle);clock_ctx.fillText(p, x1, y1);};\
  6352. clock_ctx.beginPath();\
  6353. for(var p = 1; p <= 12 ; p++){\
  6354.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6355.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6356.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6357.  clock_ctx.moveTo(x1,y1);\
  6358.  clock_ctx.lineTo(x2,y2);\
  6359. };\
  6360. for(var p = 1; p <= 60 ; p++){\
  6361.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6362.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6363.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6364.  clock_ctx.moveTo(x1,y1);\
  6365.  clock_ctx.lineTo(x2,y2);\
  6366. };\
  6367. clock_ctx.closePath();\
  6368. clock_ctx.stroke();\
  6369. break;\
  6370. };\
  6371. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  6372. clock_ctx.rotate(angle);\
  6373. clock_ctx.beginPath();\
  6374. clock_ctx.moveTo(-3, -2);\
  6375. clock_ctx.lineTo(-3, 2);\
  6376. clock_ctx.lineTo(this.radius * 0.7, 1);\
  6377. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  6378. clock_ctx.fillStyle = this.H_color;\
  6379. clock_ctx.fill();\
  6380. clock_ctx.rotate(-angle);\
  6381. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  6382. clock_ctx.rotate(angle);\
  6383. clock_ctx.beginPath();\
  6384. clock_ctx.moveTo(-3, -2);\
  6385. clock_ctx.lineTo(-3, 2);\
  6386. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  6387. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  6388. clock_ctx.fillStyle = this.M_color;\
  6389. clock_ctx.fill();\
  6390. clock_ctx.rotate(-angle);\
  6391. angle = (this.S - 15) * 2 * Math.PI / 60;\
  6392. clock_ctx.rotate(angle);\
  6393. clock_ctx.beginPath();\
  6394. clock_ctx.moveTo(0,0);\
  6395. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  6396. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  6397. clock_ctx.strokeStyle = this.S_color;\
  6398. clock_ctx.stroke();\
  6399. clock_ctx.restore();\
  6400. };",canvas_root_id,CLOCK_CANVAS);
  6401. break;
  6402.  
  6403. case DRAW_LATTICE:
  6404. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  6405. var draw_lattice = function(canvas_type,line_width,x0,y0,dx1,dy1,dx2,dy2,n1,n2,fill_color,fill_opacity,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  6406. var obj;\
  6407. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6408.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6409. }\
  6410. else\
  6411. {\
  6412.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6413. };\
  6414. var ctx = obj.getContext(\"2d\");\
  6415. ctx.save();\
  6416. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6417. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6418. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6419. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6420. var radius = line_width;\
  6421. var x = 0;\
  6422. var y = 0;\
  6423. var x_step_px = xsize/(xmax-xmin);\
  6424. var y_step_px = ysize/(ymax-ymin);\
  6425. var xv1 = dx1*x_step_px;\
  6426. var yv1 = dy1*y_step_px;\
  6427. var xv2 = dx2*x_step_px;\
  6428. var yv2 = dy2*y_step_px;\
  6429. for(var p = 0; p < n1 ;p++){\
  6430.  x = p*xv1 + x0;\
  6431.  y = p*yv1 + y0;\
  6432.  for(var c = 0; c < n2 ; c++){\
  6433.   ctx.beginPath();\
  6434.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  6435.   ctx.fill();\
  6436.   ctx.stroke();\
  6437.   ctx.closePath();\
  6438.  };\
  6439. };\
  6440. ctx.restore();\
  6441. return;\
  6442. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6443.     break;
  6444. case DRAW_XYLOGSCALE:
  6445. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  6446. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,precision){\
  6447. var obj;\
  6448. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6449.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6450. }\
  6451. else\
  6452. {\
  6453.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6454. };\
  6455. var ctx = obj.getContext(\"2d\");\
  6456. ctx.clearRect(0,0,xsize,ysize);\
  6457. ctx.save();\
  6458. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  6459. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6460. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6461. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6462. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6463. if(use_axis_numbering == 1){\
  6464.  ctx.font = font_family;\
  6465.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  6466.  ymarge = parseInt(1.5*font_size);\
  6467.  ctx.save();\
  6468.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6469.  ctx.rect(0,0,xmarge,ysize);\
  6470.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6471.  ctx.fill();\
  6472.  ctx.restore();\
  6473. }else{xmarge = 0;ymarge = 0;};\
  6474. if( typeof xaxislabel !== 'undefined' ){\
  6475.  ctx.save();\
  6476.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6477.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6478.  corr =  ctx.measureText(xaxislabel).width;\
  6479.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6480.  ctx.restore();\
  6481. };\
  6482. if( typeof yaxislabel !== 'undefined' ){\
  6483.  ctx.save();\
  6484.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6485.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6486.  corr = ctx.measureText(yaxislabel).width;\
  6487.  ctx.translate(xmarge+font_size,corr+font_size);\
  6488.  ctx.rotate(-0.5*Math.PI);\
  6489.  ctx.fillText(yaxislabel,0,0);\
  6490.  ctx.restore();\
  6491. };\
  6492. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6493. ctx.lineWidth = line_width;\
  6494. for(var p = x_min; p <= x_max ; p++){\
  6495.  num = Math.pow(xlogbase,p);\
  6496.  for(var i = 1 ; i < xlogbase ; i++){\
  6497.   x_e = x2px(i*num);\
  6498.   if( i == 1 ){\
  6499.    ctx.lineWidth = line_width;\
  6500.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6501.    if( use_axis_numbering == 1 && p > x_min){\
  6502.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6503.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6504.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6505.    };\
  6506.   }else{\
  6507.    ctx.lineWidth = 0.2*line_width;\
  6508.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6509.   };\
  6510.   if( x_e >= xmarge ){\
  6511.    ctx.beginPath();\
  6512.    ctx.moveTo(x_e,0);\
  6513.    ctx.lineTo(x_e,ysize - ymarge);\
  6514.    ctx.stroke();\
  6515.    ctx.closePath();\
  6516.   };\
  6517.  };\
  6518. };\
  6519. for(var p = y_min; p <= y_max ; p++){\
  6520.  num = Math.pow(ylogbase,p);\
  6521.  for(var i = 1 ; i < ylogbase ; i++){\
  6522.   y_e = y2px(i*num);\
  6523.   if( i == 1 ){\
  6524.    ctx.lineWidth = line_width;\
  6525.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6526.    if( use_axis_numbering == 1 && p > y_min){\
  6527.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6528.    };\
  6529.   }else{\
  6530.    ctx.lineWidth = 0.2*line_width;\
  6531.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6532.   };\
  6533.   ctx.beginPath();\
  6534.   ctx.moveTo(xmarge,y_e);\
  6535.   ctx.lineTo(xsize,y_e);\
  6536.   ctx.stroke();\
  6537.   ctx.closePath();\
  6538.  };\
  6539. };\
  6540. ctx.restore();\
  6541. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6542.     break;
  6543.  
  6544. case DRAW_XLOGSCALE:
  6545. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  6546. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,ymajor,yminor,precision){\
  6547. var obj;\
  6548. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6549.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6550. }\
  6551. else\
  6552. {\
  6553.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6554. };\
  6555. var ctx = obj.getContext(\"2d\");\
  6556. ctx.clearRect(0,0,xsize,ysize);\
  6557. ctx.save();\
  6558. ctx.lineWidth = line_width;\
  6559. var prec = Math.log(precision)/Math.log(10);\
  6560. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6561. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6562. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  6563. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  6564. if(use_axis_numbering == 1){\
  6565.  ctx.font = font_family;\
  6566.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  6567.  ymarge = parseInt(1.5*font_size);\
  6568.  ctx.save();\
  6569.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6570.  ctx.rect(0,0,xmarge,ysize);\
  6571.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6572.  ctx.fill();\
  6573.  ctx.restore();\
  6574. }else{xmarge = 0;ymarge = 0;};\
  6575. if( typeof xaxislabel !== 'undefined' ){\
  6576.  ctx.save();\
  6577.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6578.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6579.  corr =  ctx.measureText(xaxislabel).width;\
  6580.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6581.  ctx.restore();\
  6582. };\
  6583. if( typeof yaxislabel !== 'undefined' ){\
  6584.  ctx.save();\
  6585.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6586.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6587.  corr = ctx.measureText(yaxislabel).width;\
  6588.  ctx.translate(xmarge+font_size,corr+font_size);\
  6589.  ctx.rotate(-0.5*Math.PI);\
  6590.  ctx.fillText(yaxislabel,0,0);\
  6591.  ctx.restore();\
  6592. };\
  6593. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6594. ctx.lineWidth = line_width;\
  6595. for(var p = x_min; p <= x_max ; p++){\
  6596.  num = Math.pow(xlogbase,p);\
  6597.  for(var i = 1 ; i < xlogbase ; i++){\
  6598.   x_e = x2px(i*num);\
  6599.   if( i == 1 ){\
  6600.     ctx.lineWidth = line_width;\
  6601.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6602.    if( use_axis_numbering == 1 && p > x_min ){\
  6603.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6604.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6605.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6606.    };\
  6607.   }else{\
  6608.    ctx.lineWidth = 0.2*line_width;\
  6609.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6610.   };\
  6611.   if( x_e >= xmarge ){\
  6612.    ctx.beginPath();\
  6613.    ctx.moveTo(x_e,0);\
  6614.    ctx.lineTo(x_e,ysize - ymarge);\
  6615.    ctx.stroke();\
  6616.    ctx.closePath();\
  6617.   };\
  6618.  };\
  6619. };\
  6620. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  6621. var minor_step = stepy / yminor;\
  6622. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  6623.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6624.  ctx.lineWidth = line_width;\
  6625.  ctx.beginPath();\
  6626.  ctx.moveTo(xmarge,y);\
  6627.  ctx.lineTo(xsize,y);\
  6628.  ctx.stroke();\
  6629.  ctx.closePath();\
  6630.  if( use_axis_numbering == 1){\
  6631.   ytxt = (px2y(y)).toFixed(prec);\
  6632.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  6633.  };\
  6634.  for(var dy = 1 ; dy < yminor ; dy++){\
  6635.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6636.   ctx.lineWidth = 0.2*line_width;\
  6637.   ctx.beginPath();\
  6638.   ctx.moveTo(xmarge,y+dy*minor_step);\
  6639.   ctx.lineTo(xsize,y+dy*minor_step);\
  6640.   ctx.stroke();\
  6641.   ctx.closePath();\
  6642.  };\
  6643. };\
  6644. ctx.restore();\
  6645. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6646.     break;
  6647. case DRAW_YLOGSCALE:
  6648. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  6649. var draw_grid%d = function(canvas_type,line_width,major_color,minor_color,major_opacity,minor_opacity,font_size,font_family,font_color,use_axis_numbering,xmajor,xminor,precision){\
  6650. var obj;\
  6651. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6652.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6653. }\
  6654. else\
  6655. {\
  6656.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6657. };\
  6658. var ctx = obj.getContext(\"2d\");\
  6659. ctx.clearRect(0,0,xsize,ysize);\
  6660. ctx.save();\
  6661. ctx.lineWidth = line_width;\
  6662. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6663. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6664. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;var xmarge;var ymarge;\
  6665. if(use_axis_numbering == 1){\
  6666.  ctx.font = font_family;\
  6667.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  6668.  ymarge = 2*font_size;\
  6669.  ctx.save();\
  6670.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6671.  ctx.rect(0,0,xmarge,ysize);\
  6672.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6673.  ctx.fill();\
  6674.  ctx.restore();\
  6675. }else{xmarge = 0;ymarge = 0;};\
  6676. if( typeof xaxislabel !== 'undefined' ){\
  6677.  ctx.save();\
  6678.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6679.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6680.  corr =  ctx.measureText(xaxislabel).width;\
  6681.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6682.  ctx.restore();\
  6683. };\
  6684. if( typeof yaxislabel !== 'undefined' ){\
  6685.  ctx.save();\
  6686.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6687.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6688.  corr = ctx.measureText(yaxislabel).width;\
  6689.  ctx.translate(xmarge+font_size,corr+font_size);\
  6690.  ctx.rotate(-0.5*Math.PI);\
  6691.  ctx.fillText(yaxislabel,0,0);\
  6692.  ctx.restore();\
  6693. };\
  6694. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6695. ctx.lineWidth = line_width;\
  6696. for(var p = y_min; p <= y_max ; p++){\
  6697.  num = Math.pow(ylogbase,p);\
  6698.  for(var i = 1 ; i < ylogbase ; i++){\
  6699.   y_e = y2px(i*num);\
  6700.   if( i == 1 ){\
  6701.    ctx.lineWidth = line_width;\
  6702.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6703.    if( use_axis_numbering == 1 && p > y_min){\
  6704.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6705.    };\
  6706.   }else{\
  6707.    ctx.lineWidth = 0.2*line_width;\
  6708.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6709.   };\
  6710.   ctx.beginPath();\
  6711.   ctx.moveTo(xmarge,y_e);\
  6712.   ctx.lineTo(xsize,y_e);\
  6713.   ctx.stroke();\
  6714.   ctx.closePath();\
  6715.  };\
  6716. };\
  6717. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  6718. var minor_step = stepx / xminor;\
  6719. var prec = Math.log(precision)/Math.log(10);\
  6720. var xtxt;var corr;var flip = 0;\
  6721. for(var x = stepx ; x < xsize ; x = x + stepx){\
  6722.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6723.  ctx.lineWidth = line_width;\
  6724.  ctx.beginPath();\
  6725.  ctx.moveTo(x,ysize-ymarge);\
  6726.  ctx.lineTo(x,0);\
  6727.  ctx.stroke();\
  6728.  ctx.closePath();\
  6729.  if( use_axis_numbering == 1){\
  6730.   xtxt = (px2x(x)).toFixed(prec);\
  6731.   corr = 0.5*(ctx.measureText(xtxt).width);\
  6732.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  6733.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  6734.  };\
  6735.  for(var dx = 1 ; dx < xminor ; dx++){\
  6736.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6737.   ctx.lineWidth = 0.2*line_width;\
  6738.   ctx.beginPath();\
  6739.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  6740.   ctx.lineTo(x+dx*minor_step,0);\
  6741.   ctx.stroke();\
  6742.   ctx.closePath();\
  6743.  };\
  6744. };\
  6745. ctx.restore();\
  6746. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6747.     break;
  6748.     default:break;
  6749.    }
  6750.   }
  6751.  }
  6752.   return;
  6753. }
  6754.  
  6755. void check_string_length(int L){
  6756.  if(L<1 || L > MAX_BUFFER-1){
  6757.   canvas_error("problem with your arguments to command...");
  6758.  }
  6759.  return;
  6760. }
  6761.  
  6762.  
  6763. int get_token(FILE *infile){
  6764.         int     c,i=0;
  6765.         char    temp[MAX_INT], *input_type;
  6766.         char    *line="line",
  6767.         *audio="audio",
  6768.         *blink="blink",
  6769.         *arrowhead="arrowhead",
  6770.         *crosshairsize="crosshairsize",
  6771.         *crosshair="crosshair",
  6772.         *crosshairs="crosshairs",
  6773.         *audioobject="audioobject",
  6774.         *style="style",
  6775.         *mouse="mouse",
  6776.         *mousex="mousex",
  6777.         *mousey="mousey",
  6778.         *mouse_display="display",
  6779.         *mouse_degree="mouse_degree",
  6780.         *userdraw="userdraw",
  6781.         *highlight="highlight",
  6782.         *http="http",
  6783.         *rays="rays",
  6784.         *dashtype="dashtype",
  6785.         *dashed="dashed",
  6786.         *filled="filled",
  6787.         *lattice="lattice",
  6788.         *parallel="parallel",
  6789.         *segment="segment",
  6790.         *segments="segments",
  6791.         *dsegment="dsegment",
  6792.         *seg="seg",
  6793.         *bgimage="bgimage",
  6794.         *bgcolor="bgcolor",
  6795.         *strokecolor="strokecolor",
  6796.         *backgroundimage="backgroundimage",
  6797.         *text="text",
  6798.         *textup="textup",
  6799.         *mouseprecision="mouseprecision",
  6800.         *precision="precision",
  6801.         *plotsteps="plotsteps",
  6802.         *plotstep="plotstep",
  6803.         *tsteps="tsteps",
  6804.         *curve="curve",
  6805.         *dcurve="dcurve",
  6806.         *plot="plot",
  6807.         *dplot="dplot",
  6808.         *levelcurve="levelcurve",
  6809.         *fontsize="fontsize",
  6810.         *fontcolor="fontcolor",
  6811.         *axis="axis",
  6812.         *axisnumbering="axisnumbering",
  6813.         *axisnumbers="axisnumbers",
  6814.         *arrow="arrow",
  6815.         *darrow="darrow",
  6816.         *arrow2="arrow2",
  6817.         *darrow2="darrow2",
  6818.         *arrows="arrows",
  6819.         *zoom="zoom",
  6820.         *grid="grid",
  6821.         *hline="hline",
  6822.         *dhline="dhline",
  6823.         *drag="drag",
  6824.         *horizontalline="horizontalline",
  6825.         *vline="vline",
  6826.         *dvline="dvline",
  6827.         *verticalline="verticalline",
  6828.         *triangle="triangle",
  6829.         *ftriangle="ftriangle",
  6830.         *mathml="mathml",
  6831.         *html="html",
  6832.         *input="input",
  6833.         *clearbutton="clearbutton",
  6834.         *inputstyle="inputstyle",
  6835.         *textarea="textarea",
  6836.         *trange="trange",
  6837.         *ranget="ranget",
  6838.         *xrange="xrange",
  6839.         *yrange="yrange",
  6840.         *rangex="rangex",
  6841.         *rangey="rangey",
  6842.         *polyline="polyline",
  6843.         *lines="lines",
  6844.         *poly="poly",
  6845.         *polygon="polygon",
  6846.         *fpolygon="fpolygon",
  6847.         *fpoly="fpoly",
  6848.         *filledpoly="filledpoly",
  6849.         *filledpolygon="filledpolygon",
  6850.         *rect="rect",
  6851.         *frect="frect",
  6852.         *rectangle="rectangle",
  6853.         *frectangle="frectangle",
  6854.         *square="square",
  6855.         *fsquare="fsquare",
  6856.         *dline="dline",
  6857.         *arc="arc",
  6858.         *filledarc="filledarc",
  6859.         *size="size",
  6860.         *string="string",
  6861.         *stringup="stringup",
  6862.         *copy="copy",
  6863.         *copyresized="copyresized",
  6864.         *opacity="opacity",
  6865.         *transparent="transparent",
  6866.         *fill="fill",
  6867.         *point="point",
  6868.         *points="points",
  6869.         *linewidth="linewidth",
  6870.         *circle="circle",
  6871.         *circles="circles",
  6872.         *fcircle="fcircle",
  6873.         *disk="disk",
  6874.         *comment="#",
  6875.         *end="end",
  6876.         *ellipse="ellipse",
  6877.         *fellipse="fellipse",
  6878.         *rotate="rotate",
  6879.         *affine="affine",
  6880.         *killaffine="killaffine",
  6881.         *fontfamily="fontfamily",
  6882.         *fillcolor="fillcolor",
  6883.         *clicktile="clicktile",
  6884.         *clicktile_colors="clicktile_colors",
  6885.         *translation="translation",
  6886.         *translate="translate",
  6887.         *killtranslation="killtranslation",
  6888.         *killtranslate="killtranslate",
  6889.         *onclick="onclick",
  6890.         *roundrect="roundrect",
  6891.         *froundrect="froundrect",
  6892.         *roundrectangle="roundrectangle",
  6893.         *patternfill="patternfill",
  6894.         *hatchfill="hatchfill",
  6895.         *diafill="diafill",
  6896.         *diamondfill="diamondfill",
  6897.         *dotfill="dotfill",
  6898.         *gridfill="gridfill",
  6899.         *imagefill="imagefill",
  6900.         *xlogbase="xlogbase",
  6901.         *ylogbase="ylogbase",
  6902.         *xlogscale="xlogscale",
  6903.         *ylogscale="ylogscale",
  6904.         *xylogscale="xylogscale",
  6905.         *intooltip="intooltip",
  6906.         *replyformat="replyformat",
  6907.         *floodfill="floodfill",
  6908.         *filltoborder="filltoborder",
  6909.         *clickfill="clickfill",
  6910.         *setpixel="setpixel",
  6911.         *pixels="pixels",
  6912.         *pixelsize="pixelsize",
  6913.         *clickfillmarge="clickfillmarge",
  6914.         *xaxis="xaxis",
  6915.         *yaxis="yaxis",
  6916.         *xaxistext="xaxistext",
  6917.         *yaxistext="yaxistext",
  6918.         *piechart="piechart",
  6919.         *legend="legend",
  6920.         *legendcolors="legendcolors",
  6921.         *xlabel="xlabel",
  6922.         *ylabel="ylabel",
  6923.         *barchart="barchart",
  6924.         *linegraph="linegraph",
  6925.         *clock="clock",
  6926.         *animate="animate",
  6927.         *video="video",
  6928.         *status="status",
  6929.         *nostatus="nostatus",
  6930.         *snaptogrid="snaptogrid",
  6931.         *xsnaptogrid="xsnaptogrid",
  6932.         *ysnaptogrid="ysnaptogrid",
  6933.         *userinput_xy="userinput_xy",
  6934.         *userinput_function="userinput_function",
  6935.         *usertextarea_xy="usertextarea_xy",
  6936.         *userinput="userinput",
  6937.         *jsmath="jsmath",
  6938.         *trace_jscurve="trace_jscurve",
  6939.         *setlimits="setlimits",
  6940.         *jscurve="jscurve",
  6941.         *jsplot="jsplot",
  6942.         *sgraph="sgraph",
  6943.         *title="title",
  6944.         *centerstring="centerstring",
  6945.         *xunit="xunit",
  6946.         *yunit="yunit",
  6947.         *slider="slider",
  6948.         *killslider="killslider",
  6949.         *angle="angle",
  6950.         *halfline="halfline",
  6951.         *demiline="demiline",
  6952.         *functionlabel="functionlabel";
  6953.  
  6954.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6955.             if( i == 0 && (c == ' ' || c == '\t') ){
  6956.         continue; /* white spaces or tabs allowed before first command identifier */
  6957.             }
  6958.             else
  6959.             {
  6960.         if( c == ' ' || c == '\t' ){
  6961.             break;
  6962.         }
  6963.         else
  6964.         {
  6965.             temp[i] = c;
  6966.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6967.             i++;
  6968.         }
  6969.             }
  6970.             if(temp[0] == '#') break;
  6971.         }
  6972.         if (c == EOF) finished = 1;
  6973.  
  6974.         if (c == '\n' || c == '\r') {
  6975.         line_number++;
  6976.         if (i == 0) { return EMPTY; }
  6977.         } else if (c == EOF) {
  6978.         return 0;
  6979.         }
  6980.  
  6981.         temp[i]='\0';
  6982.         input_type=(char*)my_newmem(strlen(temp));
  6983.         snprintf(input_type,sizeof(temp),"%s",temp);
  6984.  
  6985.         if( strcmp(input_type, size) == 0 ){
  6986.         free(input_type);
  6987.         return SIZE;
  6988.         }
  6989.         if( strcmp(input_type, xrange) == 0 ){
  6990.         free(input_type);
  6991.         return XRANGE;
  6992.         }
  6993.         if( strcmp(input_type, rangex) == 0 ){
  6994.         free(input_type);
  6995.         return XRANGE;
  6996.         }
  6997.         if( strcmp(input_type, trange) == 0 ){
  6998.         free(input_type);
  6999.         return TRANGE;
  7000.         }
  7001.         if( strcmp(input_type, ranget) == 0 ){
  7002.         free(input_type);
  7003.         return TRANGE;
  7004.         }
  7005.         if( strcmp(input_type, yrange) == 0 ){
  7006.         free(input_type);
  7007.         return YRANGE;
  7008.         }
  7009.         if( strcmp(input_type, rangey) == 0 ){
  7010.         free(input_type);
  7011.         return YRANGE;
  7012.         }
  7013.         if( strcmp(input_type, linewidth) == 0 ){
  7014.         free(input_type);
  7015.         return LINEWIDTH;
  7016.         }
  7017.         if( strcmp(input_type, dashed) == 0 ){
  7018.         free(input_type);
  7019.         return DASHED;
  7020.         }
  7021.         if( strcmp(input_type, dashtype) == 0 ){
  7022.         free(input_type);
  7023.         return DASHTYPE;
  7024.         }
  7025.         if( strcmp(input_type, axisnumbering) == 0 ){
  7026.         free(input_type);
  7027.         return AXIS_NUMBERING;
  7028.         }
  7029.         if( strcmp(input_type, axisnumbers) == 0 ){
  7030.         free(input_type);
  7031.         return AXIS_NUMBERING;
  7032.         }
  7033.         if( strcmp(input_type, axis) == 0 ){
  7034.         free(input_type);
  7035.         return AXIS;
  7036.         }
  7037.         if( strcmp(input_type, grid) == 0 ){
  7038.         free(input_type);
  7039.         return GRID;
  7040.         }
  7041.         if( strcmp(input_type, parallel) == 0 ){
  7042.         free(input_type);
  7043.         return PARALLEL;
  7044.         }
  7045.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  7046.         free(input_type);
  7047.         return HLINE;
  7048.         }
  7049.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  7050.         free(input_type);
  7051.         return VLINE;
  7052.         }
  7053.         if( strcmp(input_type, line) == 0 ){
  7054.         free(input_type);
  7055.         return LINE;
  7056.         }
  7057.         if( strcmp(input_type, segments) == 0 ){
  7058.         free(input_type);
  7059.         return SEGMENTS;
  7060.         }
  7061.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  7062.         free(input_type);
  7063.         return SEGMENT;
  7064.         }
  7065.         if( strcmp(input_type, dsegment) == 0 ){
  7066.         free(input_type);
  7067.         use_dashed = TRUE;
  7068.         return SEGMENT;
  7069.         }
  7070.         if( strcmp(input_type, crosshairsize) == 0 ){
  7071.         free(input_type);
  7072.         return CROSSHAIRSIZE;
  7073.         }
  7074.         if( strcmp(input_type, arrowhead) == 0 ){
  7075.         free(input_type);
  7076.         return ARROWHEAD;
  7077.         }
  7078.         if( strcmp(input_type, crosshairs) == 0 ){
  7079.         free(input_type);
  7080.         return CROSSHAIRS;
  7081.         }
  7082.         if( strcmp(input_type, crosshair) == 0 ){
  7083.         free(input_type);
  7084.         return CROSSHAIR;
  7085.         }
  7086.         if( strcmp(input_type, onclick) == 0 ){
  7087.         free(input_type);
  7088.         return ONCLICK;
  7089.         }
  7090.         if( strcmp(input_type, drag) == 0 ){
  7091.         free(input_type);
  7092.         return DRAG;
  7093.         }
  7094.         if( strcmp(input_type, userdraw) == 0 ){
  7095.         free(input_type);
  7096.         return USERDRAW;
  7097.         }
  7098.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  7099.         free(input_type);
  7100.         return STYLE;
  7101.         }
  7102.         if( strcmp(input_type, fillcolor) == 0 ){
  7103.         free(input_type);
  7104.         return FILLCOLOR;
  7105.         }
  7106.         if( strcmp(input_type, strokecolor) == 0 ){
  7107.         free(input_type);
  7108.         return STROKECOLOR;
  7109.         }
  7110.         if( strcmp(input_type, filled) == 0  ){
  7111.         free(input_type);
  7112.         return FILLED;
  7113.         }
  7114.         if( strcmp(input_type, http) == 0 ){
  7115.         free(input_type);
  7116.         return HTTP;
  7117.         }
  7118.         if( strcmp(input_type, rays) == 0 ){
  7119.         free(input_type);
  7120.         return RAYS;
  7121.         }
  7122.         if( strcmp(input_type, lattice) == 0 ){
  7123.         free(input_type);
  7124.         return LATTICE;
  7125.         }
  7126.         if( strcmp(input_type, bgimage) == 0 ){
  7127.         free(input_type);
  7128.         return BGIMAGE;
  7129.         }
  7130.         if( strcmp(input_type, bgcolor) == 0 ){
  7131.         free(input_type);
  7132.         return BGCOLOR;
  7133.         }
  7134.         if( strcmp(input_type, backgroundimage) == 0 ){
  7135.         free(input_type);
  7136.         return BGIMAGE;
  7137.         }
  7138.         if( strcmp(input_type, text) == 0 ){
  7139.         free(input_type);
  7140.         return FLY_TEXT;
  7141.         }
  7142.         if( strcmp(input_type, textup) == 0 ){
  7143.         free(input_type);
  7144.         return FLY_TEXTUP;
  7145.         }
  7146.         if( strcmp(input_type, mouse) == 0 ){
  7147.         free(input_type);
  7148.         return MOUSE;
  7149.         }
  7150.         if( strcmp(input_type, mousex) == 0 ){
  7151.         free(input_type);
  7152.         return MOUSEX;
  7153.         }
  7154.         if( strcmp(input_type, mousey) == 0 ){
  7155.         free(input_type);
  7156.         return MOUSEY;
  7157.         }
  7158.         if( strcmp(input_type, mouse_degree) == 0 ){
  7159.         free(input_type);
  7160.         return MOUSE_DEGREE;
  7161.         }
  7162.         if( strcmp(input_type, mouse_display) == 0 ){
  7163.         free(input_type);
  7164.         return MOUSE_DISPLAY;
  7165.         }
  7166.         if( strcmp(input_type, mouseprecision) == 0 ){
  7167.         free(input_type);
  7168.         return MOUSE_PRECISION;
  7169.         }
  7170.         if( strcmp(input_type, precision) == 0 ){
  7171.         free(input_type);
  7172.         return MOUSE_PRECISION;
  7173.         }
  7174.         if( strcmp(input_type, curve) == 0 ){
  7175.         free(input_type);
  7176.         return CURVE;
  7177.         }
  7178.         if( strcmp(input_type, dcurve) == 0 ){
  7179.         use_dashed = TRUE;
  7180.         free(input_type);
  7181.         return CURVE;
  7182.         }
  7183.         if( strcmp(input_type, plot) == 0 ){
  7184.         free(input_type);
  7185.         return CURVE;
  7186.         }
  7187.         if( strcmp(input_type, dplot) == 0 ){
  7188.         use_dashed = TRUE;
  7189.         free(input_type);
  7190.         return CURVE;
  7191.         }
  7192.         if( strcmp(input_type, levelcurve) == 0 ){
  7193.         free(input_type);
  7194.         return LEVELCURVE;
  7195.         }
  7196.         if( strcmp(input_type, plotsteps) == 0 ){
  7197.         free(input_type);
  7198.         return PLOTSTEPS;
  7199.         }
  7200.         if( strcmp(input_type, plotstep) == 0 ){
  7201.         free(input_type);
  7202.         return PLOTSTEPS;
  7203.         }
  7204.         if( strcmp(input_type, tsteps) == 0 ){
  7205.         free(input_type);
  7206.         return PLOTSTEPS;
  7207.         }
  7208.         if( strcmp(input_type, fontsize) == 0 ){
  7209.         free(input_type);
  7210.         return FONTSIZE;
  7211.         }
  7212.         if( strcmp(input_type, fontcolor) == 0 ){
  7213.         free(input_type);
  7214.         return FONTCOLOR;
  7215.         }
  7216.         if( strcmp(input_type, arrow2) == 0 ){
  7217.         free(input_type);
  7218.         return ARROW2;
  7219.         }
  7220.         if( strcmp(input_type, darrow) == 0 ){
  7221.         free(input_type);
  7222.         use_dashed = TRUE;
  7223.         return ARROW;
  7224.         }
  7225.         if( strcmp(input_type, darrow2) == 0 ){
  7226.         free(input_type);
  7227.         use_dashed = TRUE;
  7228.         return ARROW2;
  7229.         }
  7230.         if( strcmp(input_type, arrows) == 0 ){
  7231.         free(input_type);
  7232.         return ARROWS;
  7233.         }
  7234.         if( strcmp(input_type, arrow) == 0 ){
  7235.         free(input_type);
  7236.         return ARROW;
  7237.         }
  7238.         if( strcmp(input_type, zoom) == 0 ){
  7239.         free(input_type);
  7240.         return ZOOM;
  7241.         }
  7242.         if( strcmp(input_type, triangle) == 0 ){
  7243.         free(input_type);
  7244.         return TRIANGLE;
  7245.         }
  7246.         if( strcmp(input_type, ftriangle) == 0 ){
  7247.         free(input_type);
  7248.         use_filled = TRUE;
  7249.         return TRIANGLE;
  7250.         }
  7251.         if( strcmp(input_type, input) == 0 ){
  7252.         free(input_type);
  7253.         return INPUT;
  7254.         }
  7255.         if( strcmp(input_type, inputstyle) == 0 ){
  7256.         free(input_type);
  7257.         return INPUTSTYLE;
  7258.         }
  7259.         if( strcmp(input_type, textarea) == 0 ){
  7260.         free(input_type);
  7261.         return TEXTAREA;
  7262.         }
  7263.         if( strcmp(input_type, mathml) == 0 ){
  7264.         free(input_type);
  7265.         return MATHML;
  7266.         }
  7267.         if( strcmp(input_type, html) == 0 ){
  7268.         free(input_type);
  7269.         return MATHML;
  7270.         }
  7271.         if( strcmp(input_type, fontfamily) == 0 ){
  7272.         free(input_type);
  7273.         return FONTFAMILY;
  7274.         }
  7275.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  7276.         free(input_type);
  7277.         return POLYLINE;
  7278.         }
  7279.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  7280.         free(input_type);
  7281.         return RECT;
  7282.         }
  7283.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  7284.         free(input_type);
  7285.         return ROUNDRECT;
  7286.         }
  7287.         if( strcmp(input_type, froundrect) == 0 ){
  7288.         free(input_type);
  7289.         use_filled = TRUE;
  7290.         return ROUNDRECT;
  7291.         }
  7292.         if( strcmp(input_type, square) == 0 ){
  7293.         free(input_type);
  7294.         return SQUARE;
  7295.         }
  7296.         if( strcmp(input_type, fsquare) == 0 ){
  7297.         free(input_type);
  7298.         use_filled = TRUE;
  7299.         return SQUARE;
  7300.         }
  7301.         if( strcmp(input_type, dline) == 0 ){
  7302.         use_dashed = TRUE;
  7303.         free(input_type);
  7304.         return LINE;
  7305.         }
  7306.         if( strcmp(input_type, dvline) == 0 ){
  7307.         use_dashed = TRUE;
  7308.         free(input_type);
  7309.         return VLINE;
  7310.         }
  7311.         if( strcmp(input_type, dhline) == 0 ){
  7312.         use_dashed = TRUE;
  7313.         free(input_type);
  7314.         return HLINE;
  7315.         }
  7316.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  7317.         use_filled = TRUE;
  7318.         free(input_type);
  7319.         return RECT;
  7320.         }
  7321.         if( strcmp(input_type, circles) == 0 ){
  7322.         free(input_type);
  7323.         return CIRCLES;
  7324.         }
  7325.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  7326.         use_filled = TRUE;
  7327.         free(input_type);
  7328.         return CIRCLE;
  7329.         }
  7330.         if( strcmp(input_type, circle) == 0 ){
  7331.         free(input_type);
  7332.         return CIRCLE;
  7333.         }
  7334.         if( strcmp(input_type, point) == 0 ){
  7335.         free(input_type);
  7336.         return POINT;
  7337.         }
  7338.         if( strcmp(input_type, points) == 0 ){
  7339.         free(input_type);
  7340.         return POINTS;
  7341.         }
  7342.         if( strcmp(input_type, filledarc) == 0 ){
  7343.         use_filled = TRUE;
  7344.         free(input_type);
  7345.         return ARC;
  7346.         }
  7347.         if( strcmp(input_type, arc) == 0 ){
  7348.         free(input_type);
  7349.         return ARC;
  7350.         }
  7351.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  7352.         free(input_type);
  7353.         return POLY;
  7354.         }
  7355.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  7356.         use_filled = TRUE;
  7357.         free(input_type);
  7358.         return POLY;
  7359.         }
  7360.         if( strcmp(input_type, ellipse) == 0){
  7361.         free(input_type);
  7362.         return ELLIPSE;
  7363.         }
  7364.         if( strcmp(input_type, fill) == 0 ){
  7365.         free(input_type);
  7366.         return FLOODFILL;
  7367.         }
  7368.         if( strcmp(input_type, string) == 0 ){
  7369.         free(input_type);
  7370.         return STRING;
  7371.         }
  7372.         if( strcmp(input_type, stringup) == 0 ){
  7373.         free(input_type);
  7374.         return STRINGUP;
  7375.         }
  7376.         if( strcmp(input_type, opacity) == 0 ){
  7377.         free(input_type);
  7378.         return OPACITY;
  7379.         }
  7380.         if( strcmp(input_type, comment) == 0){
  7381.         free(input_type);
  7382.         return COMMENT;
  7383.         }
  7384.         if( strcmp(input_type, end) == 0){
  7385.         free(input_type);
  7386.         return END;
  7387.         }
  7388.         if( strcmp(input_type, fellipse) == 0){
  7389.         free(input_type);
  7390.         use_filled = TRUE;
  7391.         return ELLIPSE;
  7392.         }
  7393.         if( strcmp(input_type, blink) == 0 ){
  7394.         free(input_type);
  7395.         return BLINK;
  7396.         }
  7397.         if( strcmp(input_type, clearbutton) == 0){
  7398.         free(input_type);
  7399.         return CLEARBUTTON;
  7400.         }
  7401.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  7402.         free(input_type);
  7403.         return TRANSLATION;
  7404.         }
  7405.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  7406.         free(input_type);
  7407.         return KILLTRANSLATION;
  7408.         }
  7409.         if( strcmp(input_type, rotate) == 0){
  7410.         free(input_type);
  7411.         return ROTATE;
  7412.         }
  7413.         if( strcmp(input_type, affine) == 0){
  7414.         free(input_type);
  7415.         return AFFINE;
  7416.         }
  7417.         if( strcmp(input_type, killaffine) == 0){
  7418.         free(input_type);
  7419.         return KILLAFFINE;
  7420.         }
  7421.         if( strcmp(input_type, audio) == 0 ){
  7422.         free(input_type);
  7423.         return AUDIO;
  7424.         }
  7425.         if( strcmp(input_type, audioobject) == 0 ){
  7426.         free(input_type);
  7427.         return AUDIOOBJECT;
  7428.         }
  7429.         if( strcmp(input_type, slider) == 0 ){
  7430.         free(input_type);
  7431.         return SLIDER;
  7432.         }
  7433.         if( strcmp(input_type, killslider) == 0 ){
  7434.         free(input_type);
  7435.         return KILLSLIDER;
  7436.         }
  7437.         if( strcmp(input_type, copy) == 0 ){
  7438.         free(input_type);
  7439.         return COPY;
  7440.         }
  7441.         if( strcmp(input_type, copyresized) == 0 ){
  7442.         free(input_type);
  7443.         return COPYRESIZED;
  7444.         }
  7445.         if( strcmp(input_type, patternfill) == 0 ){
  7446.         free(input_type);
  7447.         return PATTERNFILL;
  7448.         }
  7449.         if( strcmp(input_type, hatchfill) == 0 ){
  7450.         free(input_type);
  7451.         return HATCHFILL;
  7452.         }
  7453.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  7454.         free(input_type);
  7455.         return DIAMONDFILL;
  7456.         }
  7457.         if( strcmp(input_type, dotfill) == 0 ){
  7458.         free(input_type);
  7459.         return DOTFILL;
  7460.         }
  7461.         if( strcmp(input_type, gridfill) == 0 ){
  7462.         free(input_type);
  7463.         return GRIDFILL;
  7464.         }
  7465.         if( strcmp(input_type, imagefill) == 0 ){
  7466.         free(input_type);
  7467.         return IMAGEFILL;
  7468.         }
  7469.         if( strcmp(input_type, clicktile_colors) == 0 ){
  7470.         free(input_type);
  7471.         return CLICKTILE_COLORS;
  7472.         }
  7473.         if( strcmp(input_type, clicktile) == 0 ){
  7474.         free(input_type);
  7475.         return CLICKTILE;
  7476.         }
  7477.         if( strcmp(input_type, xlogscale) == 0 ){
  7478.         free(input_type);
  7479.         return XLOGSCALE;
  7480.         }
  7481.         if( strcmp(input_type, ylogscale) == 0 ){
  7482.         free(input_type);
  7483.         return YLOGSCALE;
  7484.         }
  7485.         if( strcmp(input_type, xylogscale) == 0 ){
  7486.         free(input_type);
  7487.         return XYLOGSCALE;
  7488.         }
  7489.         if( strcmp(input_type, ylogscale) == 0 ){
  7490.         free(input_type);
  7491.         return YLOGSCALE;
  7492.         }
  7493.         if( strcmp(input_type, xlogbase) == 0 ){
  7494.         free(input_type);
  7495.         return XLOGBASE;
  7496.         }
  7497.         if( strcmp(input_type, ylogbase) == 0 ){
  7498.         free(input_type);
  7499.         return YLOGBASE;
  7500.         }
  7501.         if( strcmp(input_type, intooltip) == 0 ){
  7502.         free(input_type);
  7503.         return INTOOLTIP;
  7504.         }
  7505.         if( strcmp(input_type,video) == 0 ){
  7506.         free(input_type);
  7507.         return VIDEO;
  7508.         }
  7509.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  7510.         free(input_type);
  7511.         return FLOODFILL;
  7512.         }
  7513.         if( strcmp(input_type,filltoborder) == 0 ){
  7514.         free(input_type);
  7515.         return FILLTOBORDER;
  7516.         }
  7517.         if( strcmp(input_type,clickfill) == 0 ){
  7518.         free(input_type);
  7519.         return CLICKFILL;
  7520.         }
  7521.         if( strcmp(input_type, replyformat) == 0 ){
  7522.         free(input_type);
  7523.         return REPLYFORMAT;
  7524.         }
  7525.         if( strcmp(input_type, pixelsize) == 0 ){
  7526.         free(input_type);
  7527.         return PIXELSIZE;
  7528.         }
  7529.         if( strcmp(input_type, setpixel) == 0 ){
  7530.         free(input_type);
  7531.         return SETPIXEL;
  7532.         }
  7533.         if( strcmp(input_type, pixels) == 0 ){
  7534.         free(input_type);
  7535.         return PIXELS;
  7536.         }
  7537.         if( strcmp(input_type, clickfillmarge) == 0 ){
  7538.         free(input_type);
  7539.         return CLICKFILLMARGE;
  7540.         }
  7541.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  7542.         free(input_type);
  7543.         return X_AXIS_STRINGS;
  7544.         }
  7545.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  7546.         free(input_type);
  7547.         return Y_AXIS_STRINGS;
  7548.         }
  7549.         if( strcmp(input_type, piechart) == 0  ){
  7550.         free(input_type);
  7551.         return PIECHART;
  7552.         }
  7553.         if( strcmp(input_type, barchart) == 0  ){
  7554.         free(input_type);
  7555.         return BARCHART;
  7556.         }
  7557.         if( strcmp(input_type, linegraph) == 0  ){
  7558.         free(input_type);
  7559.         return LINEGRAPH;
  7560.         }
  7561.         if( strcmp(input_type, clock) == 0  ){
  7562.         free(input_type);
  7563.         return CLOCK;
  7564.         }
  7565.         if( strcmp(input_type, legend) == 0  ){
  7566.         free(input_type);
  7567.         return LEGEND;
  7568.         }
  7569.         if( strcmp(input_type, legendcolors) == 0  ){
  7570.         free(input_type);
  7571.         return LEGENDCOLORS;
  7572.         }
  7573.         if( strcmp(input_type, xlabel) == 0  ){
  7574.         free(input_type);
  7575.         return XLABEL;
  7576.         }
  7577.         if( strcmp(input_type, ylabel) == 0  ){
  7578.         free(input_type);
  7579.         return YLABEL;
  7580.         }
  7581.         if( strcmp(input_type, animate) == 0  ){
  7582.         free(input_type);
  7583.         return ANIMATE;
  7584.         }
  7585.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  7586.         if( strcmp(input_type, transparent) == 0 ){
  7587.         free(input_type);
  7588.         return TRANSPARENT;
  7589.         }
  7590.         if( strcmp(input_type, status) == 0 || strcmp(input_type, nostatus) == 0 ){
  7591.         free(input_type);
  7592.         return STATUS;
  7593.         }
  7594.         if( strcmp(input_type, snaptogrid) == 0 ){
  7595.         free(input_type);
  7596.         return SNAPTOGRID;
  7597.         }
  7598.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  7599.         free(input_type);
  7600.         return XSNAPTOGRID;
  7601.         }
  7602.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  7603.         free(input_type);
  7604.         return YSNAPTOGRID;
  7605.         }
  7606.         if( strcmp(input_type, userinput_xy) == 0 ){
  7607.         free(input_type);
  7608.         return USERINPUT_XY;
  7609.         }
  7610.         if( strcmp(input_type, userinput_function) == 0 ){
  7611.         free(input_type);
  7612.         return USERINPUT_FUNCTION;
  7613.         }
  7614.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  7615.         free(input_type);
  7616.         return USERTEXTAREA_XY;
  7617.         }
  7618.         if( strcmp(input_type, userinput) == 0 ){
  7619.         free(input_type);
  7620.         return USERINPUT;
  7621.         }
  7622.         if( strcmp(input_type, sgraph) == 0 ){
  7623.         free(input_type);
  7624.         return SGRAPH;
  7625.         }
  7626.         if( strcmp(input_type, jsmath) == 0 ){
  7627.         free(input_type);
  7628.         return JSMATH;
  7629.         }
  7630.         if( strcmp(input_type, trace_jscurve) == 0 ){
  7631.         free(input_type);
  7632.         return TRACE_JSCURVE;
  7633.         }
  7634.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  7635.         free(input_type);
  7636.         return JSCURVE;
  7637.         }
  7638.         if( strcmp(input_type, centerstring) == 0 || strcmp(input_type, title) == 0 ){
  7639.         free(input_type);
  7640.         return CENTERSTRING;
  7641.         }
  7642.         if( strcmp(input_type, setlimits) == 0 ){
  7643.         free(input_type);
  7644.         return SETLIMITS;
  7645.         }
  7646.         if( strcmp(input_type, xunit) == 0 ){
  7647.         free(input_type);
  7648.         return XUNIT;
  7649.         }
  7650.         if( strcmp(input_type, yunit) == 0 ){
  7651.         free(input_type);
  7652.         return YUNIT;
  7653.         }
  7654.         if( strcmp(input_type, angle) == 0 ){
  7655.         free(input_type);
  7656.         return ANGLE;
  7657.         }
  7658.         if( strcmp(input_type, halfline) == 0 || strcmp(input_type, demiline) == 0  ){
  7659.         free(input_type);
  7660.         return HALFLINE;
  7661.         }
  7662.         if( strcmp(input_type, functionlabel) == 0 ){
  7663.         free(input_type);
  7664.         return FUNCTION_LABEL;
  7665.         }
  7666.         free(input_type);
  7667.         ungetc(c,infile);
  7668.         return 0;
  7669. }
  7670.  
  7671.