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  1. /*
  2. 27/7/2013 version 0.01
  3. "Inspired" by FLY program: http://martin.gleeson.com/fly
  4. *********************************************************************************
  5. * J.M. Evers 7/2013                                                             *
  6. * This is all just amateur scriblings... So no copyrights.                      *
  7. * This source code file, and compiled objects derived from it,                  *
  8. * can be used and distributed without restriction, including for commercial use *
  9. * No warrenty whatsoever                                                        *
  10. *********************************************************************************
  11. */
  12. #include "canvasdraw.h"
  13.  
  14. /******************************************************************************
  15. **  Internal Functions
  16. ******************************************************************************/
  17. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  18. void    sync_input(FILE *infile);/* proceed with inputfile */
  19. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  20. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  21. int     get_token(FILE *infile); /* read next char until EOL*/
  22. /*
  23. int     x2px(double x);
  24. int     y2px(double y);
  25. */
  26. double  px2x(int x);
  27. double  px2y(int y);
  28. double  get_real(FILE *infile,int last); /* read a value; calculation and symbols allowed */
  29. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  30. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  31. char    *get_string(FILE *infile,int last); /* get the string at the end of a command */
  32. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  33. char    *convert_hex2rgb(char *hexcolor);
  34. void    add_read_canvas(int canvas_root_id,int reply_format,int reply_precision);
  35. void    make_js_include(int canvas_root_id);
  36. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  37. FILE    *js_include_file;
  38. FILE    *get_file(int *line_number, char **filename);
  39. FILE    *infile;    /* will be stdin */
  40. /******************************************************************************
  41. ** global
  42. ******************************************************************************/
  43. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  44. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  45. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  46. int xsize = 320;
  47. int ysize = 320;
  48. double xmin = 0.0;
  49. double xmax = 320.0;
  50. double ymin = 0.0;
  51. double ymax = 320.0;
  52. double tmax = 2;
  53. double tmin = -2;
  54. /* flag to indicate parsing of line status */
  55. int done = FALSE;
  56. int type; /* eg command number */
  57. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  58. int slider = 0;/* slider=1 : x-values ; slider=2 : y-values;slider=3 angle values */
  59. int use_affine = FALSE;
  60. int use_rotate = FALSE;
  61. int use_filled = FALSE;
  62. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  63.  
  64. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  65.  
  66. /******************************************************************************
  67. ** Main Program
  68. ******************************************************************************/
  69. int main(int argc, char *argv[]){
  70.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  71.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  72.     infile = stdin;/* read flyscript via stdin */
  73.     int i,c;
  74.     double double_data[MAX_INT+1];
  75.     int int_data[MAX_INT+1];
  76.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  77.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  78.     int use_axis = FALSE;
  79.     int use_axis_numbering = FALSE;
  80.     int use_pan_and_zoom = FALSE;
  81.     int use_safe_eval = FALSE; /* if true, add just once : js function to evaluate userinput values for plotting etc */
  82.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  83.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  84.     int line_width = 1;
  85.     int decimals = 2;
  86.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  87.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  88.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  89.     int use_tooltip = FALSE;
  90.     char *tooltip_text = "Click here";
  91.     char *temp = ""; /* */
  92.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  93.     char *stroke_color = "255,0,0";
  94.     char *fill_color = "0,255,0";
  95.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  96.     char *font_color = "#00000";
  97.     char *draw_type = "points";
  98.     char *fly_font = "normal";
  99.     char *input_style = "";
  100.     char *flytext = "";
  101.     char *affine_matrix = "[1,0,0,1,0,0]";
  102.     char *function_label = "f(x)=";
  103.     int pixelsize = 1;
  104.     int reply_format = 0;
  105.     int input_cnt = 0;
  106.     int ext_img_cnt = 0;
  107.     int slider_cnt = 0;
  108.     int font_size = 12;
  109.     int dashtype[2] = { 4 , 4 };
  110.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  111.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  112.     int arrow_head = 8; /* size in px*/
  113.     int crosshair_size = 5; /* size in px*/
  114.     int plot_steps = 250;
  115.     int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange*/
  116.     int click_cnt = 1;
  117.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  118.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  119.     int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
  120.     int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc  */
  121.     int reply_precision = 100; /* used for precision of student answers / drawings */
  122.     double angle = 0.0;
  123.     int clickfillmarge = 20;
  124.     int animation_type = 9; /* == object type curve in drag library */
  125.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  126.     int use_slider_display = 0; /* in case of a slider, should we display it's value ?*/
  127.     size_t string_length = 0;
  128.     double stroke_opacity = 0.8;
  129.     double fill_opacity = 0.8;
  130.     char *URL = "http://localhost/images";
  131.     memset(buffer,'\0',MAX_BUFFER);
  132.     void *tmp_buffer = "";
  133.  
  134.     /* default writing a unzipped js-include file into wims getfile directory */
  135.     char *w_wims_session = getenv("w_wims_session");
  136.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  137.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  138.     }
  139.     int L0=strlen(w_wims_session) + 21;
  140.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  141.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  142.     mode_t process_mask = umask(0); /* check if file exists */
  143.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  144.     if( result == 0 || errno == EEXIST ){
  145.      umask(process_mask); /* be sure to set correct permission */
  146.      char *w_session = getenv("w_session");
  147.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  148.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  149.      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 */
  150.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  151.     /* now write file into getfile dir*/
  152.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  153.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  154.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  155.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  156.     js_include_file = fopen(location,"w");/* open the file location for writing */
  157.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  158.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  159.  
  160. /* ----------------------------------------------------- */
  161. /* while more lines to process */
  162.  
  163.     while(!finished){
  164.         if(line_number>1 && found_size_command == 0){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  165.         type = get_token(infile);
  166.         done = FALSE;
  167.         /*
  168.         @canvasdraw
  169.         @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...)
  170.         @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>
  171.         @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>    
  172.         */
  173.         switch(type){
  174.         case END:
  175.         finished = 1;
  176.         done = TRUE;
  177.         break;
  178.         case 0:
  179.             sync_input(infile);
  180.             break;
  181.         case COMMENT:
  182.             sync_input(infile);
  183.             break;
  184.         case EMPTY:
  185.             sync_input(infile);
  186.             break;
  187.         case SIZE:
  188.             /*
  189.             @size width,height
  190.             @set canvas size in pixels
  191.             @mandatory first command
  192.             @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
  193.             */
  194.             found_size_command = 1;
  195.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  196.             ysize = (int)(abs(round(get_real(infile,1))));
  197.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  198.             xmin = 0;xmax = xsize;
  199.             ymin = 0;ymax = ysize;
  200.  
  201. /*
  202.  The sequence in which stuff is finally printed is important !!
  203.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  204. */
  205. fprintf(stdout,"\n<script type=\"text/javascript\">\
  206. if( typeof wims_status === 'undefined' ){ var wims_status = \"$status\";};\
  207. if( typeof use_dragdrop_reply === 'undefined' ){ var use_dragdrop_reply = false;};\
  208. if( typeof canvas_scripts === 'undefined' ){ var canvas_scripts = new Array();};\
  209. canvas_scripts.push(\"%d\");</script>\n\
  210. <!-- canvasdraw div and tooltip placeholder, if needed -->\n<div tabindex=\"0\" id=\"canvas_div%d\" style=\"position:relative;width:%dpx;height:%dpx;margin-left:auto;margin-right:auto;\" ></div><div id=\"tooltip_placeholder_div%d\" style=\"display:block;margin-bottom:4px;\"><span id=\"tooltip_placeholder%d\" style=\"display:none;\"></span></div>\n",canvas_root_id,canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id);
  211. 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);
  212. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n\
  213. \"use strict\";\n\
  214. <!-- these variables and functions must be global -->\n\
  215. var read_dragdrop%d;\
  216. var read_canvas%d;\
  217. var set_clock;\
  218. var clear_draw_area;\
  219. var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  220. var userdraw_x = [];var userdraw_y = [];var userdraw_radius = [];\n\
  221. var xsize = %d;\
  222. var ysize = %d;\
  223. var precision = 100;\
  224. var canvas_div = document.getElementById(\"canvas_div%d\");\
  225. 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;};\
  226. 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;};\
  227. 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);};};\
  228. 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);};};\
  229. 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);};};\
  230. 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);};};\
  231. function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
  232. function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
  233. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  234. 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) ));};\
  235. 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;};\
  236. 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;};\
  237. var x_use_snap_to_grid = 0;var y_use_snap_to_grid = 0;var snap_x = 1;var snap_y = 1;\
  238. function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
  239. function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
  240. var xlogbase = 10;\
  241. var ylogbase = 10;\
  242. var use_xlogscale = 0;\
  243. var use_ylogscale = 0;\
  244. var x_strings = null;\
  245. var y_strings = null;\
  246. var use_pan_and_zoom = 0;\
  247. var use_jsmath = 0;\
  248. var xstart = 0;\
  249. var ystart = 0;\
  250. var unit_x=\" \";\
  251. 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);
  252. /* default add the drag code : nearly always used ...*/
  253.   add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  254.  
  255.             break;
  256.         case XRANGE:
  257.         /*
  258.         @ xrange xmin,xmax
  259.         @ if not given: 0,xsize (eg in pixels)
  260.         */
  261.             for(i = 0 ; i<2; i++){
  262.                 switch(i){
  263.                     case 0: xmin = get_real(infile,0);break;
  264.                     case 1: xmax = get_real(infile,1);break;
  265.                     default: break;
  266.                 }
  267.             }
  268.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  269.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  270.             found_size_command++;
  271.             break;
  272.         case YRANGE:
  273.         /*
  274.         @ yrange ymin,ymax
  275.         @ if not given 0,ysize (eg in pixels)
  276.         */
  277.             for(i = 0 ; i<2; i++){
  278.                 switch(i){
  279.                     case 0: ymin = get_real(infile,0);break;
  280.                     case 1: ymax = get_real(infile,1);break;
  281.                     default: break;
  282.                 }
  283.             }
  284.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  285.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  286.             found_size_command++;
  287.             break;
  288.         case TRANGE:
  289.         /*
  290.         @ trange tmin,tmax
  291.         @ default -2,2
  292.         */
  293.             use_parametric = TRUE;
  294.             for(i = 0 ; i<2; i++){
  295.                 switch(i){
  296.                     case 0: tmin = get_real(infile,0);break;
  297.                     case 1: tmax = get_real(infile,1);break;
  298.                     default: break;
  299.                 }
  300.             }
  301.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  302.             break;
  303.         case LINEWIDTH:
  304.         /*
  305.         @ linewidth int
  306.         @ default 1
  307.         */
  308.             line_width = (int) (get_real(infile,1));
  309.             break;
  310.         case ARROWHEAD:
  311.         /*
  312.         @ arrowhead int
  313.         @ default 8 (pixels)
  314.         */
  315.             arrow_head = (int) (get_real(infile,1));
  316.             break;
  317.         case CROSSHAIRSIZE:
  318.         /*
  319.         @ crosshairsize int
  320.         @ default 10 (px)
  321.         */
  322.             crosshair_size = (int) (get_real(infile,1));
  323.             break;
  324.         case CROSSHAIR:
  325.         /*
  326.         @ crosshair x,y,color
  327.         @ draw a single crosshair point at (x;y) in color 'color'
  328.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  329.         @ may be set draggable / onclick
  330.         */
  331.             for(i=0;i<3;i++){
  332.                 switch(i){
  333.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  334.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  335.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  336.                         decimals = find_number_of_digits(precision);
  337.                         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);
  338.                         click_cnt++;reset();
  339.                         break;
  340.                     default:break;
  341.                 }
  342.             }
  343.             break;
  344.         case CROSSHAIRS:
  345.         /*
  346.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  347.         @ draw multiple crosshair points at given coordinates in color 'color'
  348.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  349.         @ may be set draggable / onclick individually (!)
  350.         */
  351.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  352.             fill_color = stroke_color;
  353.             i=0;
  354.             while( ! done ){     /* get next item until EOL*/
  355.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  356.                 if(i%2 == 0 ){
  357.                     double_data[i] = get_real(infile,0); /* x */
  358.                 }
  359.                 else
  360.                 {
  361.                     double_data[i] = get_real(infile,1); /* y */
  362.                 }
  363.                 i++;
  364.             }
  365.             decimals = find_number_of_digits(precision);
  366.             for(c=0 ; c < i-1 ; c = c+2){
  367.                 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);
  368.                 click_cnt++;
  369.             }
  370.             reset();
  371.             break;
  372.         case POINT:
  373.         /*
  374.         @ point x,y,color
  375.         @ draw a single point at (x;y) in color 'color'
  376.         @ use command 'linewidth int'  to adust size
  377.         @ may be set draggable / onclick
  378.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  379.         */
  380.             for(i=0;i<3;i++){
  381.                 switch(i){
  382.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  383.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  384.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  385.                     decimals = find_number_of_digits(precision);
  386.                     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);
  387.                     click_cnt++;break;
  388.                     default: break;
  389.                 }
  390.             }
  391.             reset();
  392.             break;
  393.         case POINTS:
  394.         /*
  395.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  396.         @ draw multiple points at given coordinates in color 'color'
  397.         @ use command 'linewidth int'  to adust size
  398.         @ may be set draggable / onclick individually (!)
  399.         */
  400.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  401.             fill_color = stroke_color;
  402.             i=0;
  403.             while( ! done ){     /* get next item until EOL*/
  404.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  405.                 if(i%2 == 0 ){
  406.                     double_data[i] = get_real(infile,0); /* x */
  407.                 }
  408.                 else
  409.                 {
  410.                     double_data[i] = get_real(infile,1); /* y */
  411.                 }
  412.                 i++;
  413.             }
  414.             decimals = find_number_of_digits(precision);
  415.             for(c = 0 ; c < i-1 ; c = c+2){
  416.                 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);
  417.                 click_cnt++;
  418.             }
  419.             reset();
  420.             break;
  421.         case SEGMENT:
  422.         /*
  423.         @ segment x1,y1,x2,y2,color
  424.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  425.         @ may be set draggable / onclick
  426.         */
  427.             for(i=0;i<5;i++) {
  428.                 switch(i){
  429.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  430.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  431.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  432.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  433.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  434.                         decimals = find_number_of_digits(precision);
  435.                         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);
  436.                         click_cnt++;reset();
  437.                         break;
  438.                     default: break;
  439.                 }
  440.             }
  441.             break;
  442.         case LINE:
  443.         /*
  444.         @ line x1,y1,x2,y2,color
  445.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  446.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  447.         @ may be set draggable / onclick
  448.         */
  449.             for(i=0;i<5;i++){
  450.                 switch(i){
  451.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  452.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  453.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  454.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  455.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  456.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  457.                         double_data[1] = xmin;
  458.                         double_data[3] = ymax;
  459.                         double_data[0] = double_data[10];
  460.                         double_data[2] = double_data[10];
  461.                     }
  462.                     else
  463.                     {
  464.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  465.                             double_data[1] = double_data[11];
  466.                             double_data[3] = double_data[11];
  467.                             double_data[0] = ymin;
  468.                             double_data[2] = xmax;
  469.                         }
  470.                         else
  471.                         {
  472.                         /* m */
  473.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  474.                         /* q */
  475.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  476.  
  477.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  478.  
  479.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  480.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  481.                             double_data[0] = xmin;
  482.                             double_data[2] = xmax;
  483.                         }
  484.                     }
  485.                     decimals = find_number_of_digits(precision);
  486.                     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);
  487.                     click_cnt++;reset();
  488.                     break;
  489.                 }
  490.             }
  491.             break;
  492.         case HALFLINE:
  493.         /*
  494.         @ demiline x1,y1,x2,y2,color
  495.         @ alternative : halfline
  496.         @ draws a halfline starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex)
  497.         @ may be set draggable / onclick
  498.         */
  499.             for(i=0;i<5;i++){
  500.                 switch(i){
  501.                     case 0: double_data[0]= get_real(infile,0);break; /* x-values */
  502.                     case 1: double_data[1]= get_real(infile,0);break; /* y-values */
  503.                     case 2: double_data[10]= get_real(infile,0);break; /* x-values */
  504.                     case 3: double_data[11]= get_real(infile,0);break; /* y-values */
  505.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  506.                     if(double_data[0] == double_data[10]){ /* vertical halfline */
  507.                         if(double_data[1] < double_data[11]){
  508.                          double_data[3] = ymax + 1000;
  509.                         }
  510.                         else
  511.                         {
  512.                          double_data[3] = ymin - 1000;
  513.                         }
  514.                         double_data[2] = double_data[0];
  515.                     }
  516.                     else
  517.                     { /* horizontal halfline*/
  518.                      if( double_data[1] == double_data[11] ){
  519.                       if( double_data[0] < double_data[10] ){
  520.                         double_data[2] = xmax + 1000; /* halfline to the right */
  521.                       }
  522.                       else
  523.                       {
  524.                         double_data[2] = xmin - 1000; /* halfline to the left */
  525.                       }
  526.                       double_data[3] = double_data[1];
  527.                      }
  528.                      else
  529.                      {
  530.                       /* any other halfline */
  531.                       /* slope */
  532.                       double_data[12] = (double_data[11] - double_data[1])/(double_data[10] - double_data[0]);
  533.                       /* const */
  534.                       double_data[13] = double_data[1] - double_data[12]*double_data[0];
  535.                       if( double_data[0] < double_data[10] ){
  536.                        double_data[2] = double_data[2] + 1000;
  537.                       }
  538.                       else
  539.                       {
  540.                        double_data[2] = double_data[2] - 1000;
  541.                       }
  542.                       double_data[3] = double_data[12]*double_data[2] + double_data[13];
  543.                      }
  544.                     }    
  545.                     decimals = find_number_of_digits(precision);
  546.                     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);
  547.                     click_cnt++;reset();
  548.                     break;
  549.                 }
  550.             }
  551.        
  552.             break;
  553.         case HLINE:
  554.         /*
  555.         @ hline x,y,color
  556.         @ draw a horizontal line through point (x:y) in color 'color'
  557.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  558.         @ may be set draggable / onclick
  559.         */
  560.             for(i=0;i<3;i++) {
  561.                 switch(i){
  562.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  563.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  564.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  565.                     double_data[3] = double_data[1];
  566.                     decimals = find_number_of_digits(precision);
  567.                     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);
  568.                     click_cnt++;reset();
  569.                     break;
  570.                 }
  571.             }
  572.             break;
  573.         case VLINE:
  574.         /*
  575.         @ vline x,y,color
  576.         @ draw a vertical line through point (x:y) in color 'color'
  577.         @ may be set draggable / onclick
  578.         */
  579.             for(i=0;i<3;i++) {
  580.                 switch(i){
  581.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  582.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  583.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  584.                         double_data[2] = double_data[0];
  585.                         decimals = find_number_of_digits(precision);
  586.                         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);
  587.                         click_cnt++;reset();
  588.                     break;
  589.                 }
  590.             }
  591.             break;
  592.         case SQUARE:
  593.         /*
  594.         @ square x,y,side (px) ,color
  595.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  596.         @ use command 'fsquare x,y,side,color' for a filled square
  597.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  598.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  599.         @ may be set draggable / onclick
  600.         */
  601.             for(i=0;i<5;i++){
  602.                 switch(i){
  603.                     case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
  604.                     case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
  605.                     case 2:double_data[2] = (int) (get_real(infile,0));break; /* width in px */
  606.                     case 3:
  607.                         stroke_color = get_color(infile,1);/* name or hex color */
  608.                         decimals = find_number_of_digits(precision);
  609.                         double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
  610.                         double_data[4] = double_data[1] + -1*(ymax - ymin)*double_data[2]/ysize;
  611.                         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);
  612.                         click_cnt++;reset();
  613.                         break;
  614.                 }
  615.             }
  616.             break;
  617.         case ROUNDRECT:
  618.         /*
  619.         @ roundrect x1,y1,x2,y2,radius,color
  620.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  621.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  622.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  623.         @ may be set draggable / onclick
  624.         */
  625.             for(i=0;i<6;i++){
  626.                 switch(i){
  627.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  628.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  629.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  630.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  631.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  632.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  633.                         /* ensure no inverted roundrect is produced... */
  634.                         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];}
  635.                         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];}
  636.                         decimals = find_number_of_digits(precision);
  637.                         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);
  638.                         click_cnt++;reset();
  639.                     break;
  640.                 }
  641.             }
  642.             break;
  643.         case RECT:
  644.         /*
  645.         @ rect x1,y1,x2,y2,color
  646.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  647.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  648.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  649.         @ may be set draggable / onclick
  650.         */
  651.             for(i=0;i<5;i++){
  652.                 switch(i){
  653.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  654.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  655.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  656.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  657.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  658.                         decimals = find_number_of_digits(precision);
  659.                         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);
  660.                         click_cnt++;reset();
  661.                         break;
  662.                 }
  663.             }
  664.             break;
  665.         case POLYLINE:
  666.         /*
  667.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  668.         @ may be set draggable / onclick
  669.         */
  670.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  671.             i=0;
  672.             c=0;
  673.             while( ! done ){     /* get next item until EOL*/
  674.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  675.                 for( c = 0 ; c < 2; c++){
  676.                     if(c == 0 ){
  677.                         double_data[i] = get_real(infile,0);
  678.                         i++;
  679.                     }
  680.                     else
  681.                     {
  682.                         double_data[i] = get_real(infile,1);
  683.                         i++;
  684.                     }
  685.                 }
  686.             }
  687.             /* draw path : not closed & not filled */
  688.             decimals = find_number_of_digits(precision);
  689.             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);
  690.             click_cnt++;reset();
  691.             break;
  692.         case POLY:
  693.         /*
  694.         @ poly color,x1,y1,x2,y2...x_n,y_n
  695.         @ draw closed polygon
  696.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  697.         @ may be set draggable / onclick
  698.         */
  699.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  700.             i=0;
  701.             c=0;
  702.             while( ! done ){     /* get next item until EOL*/
  703.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  704.                 for( c = 0 ; c < 2; c++){
  705.                     if(c == 0 ){
  706.                         double_data[i] = get_real(infile,0);
  707.                         i++;
  708.                     }
  709.                     else
  710.                     {
  711.                         double_data[i] = get_real(infile,1);
  712.                         i++;
  713.                     }
  714.                 }
  715.             }
  716.             /* draw path :  closed & optional filled */
  717.                 decimals = find_number_of_digits(precision);
  718.                 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);
  719.                 click_cnt++;reset();
  720.             break;
  721.         case ARC:
  722.         /*
  723.          @ arc xc,yc,width,height,start_angle,end_angle,color
  724.          @ can not be set "onclick" or "drag xy"
  725.          @ attention: width == height == radius in pixels
  726.          @ will not zoom in or zoom out (because radius is given in pixels an not in x/y-system !). Panning will work
  727.          @ use command 'angle' for scalable angle
  728.         */
  729.             for(i=0;i<7;i++){
  730.                 switch(i){
  731.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  732.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  733.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  734.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  735.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  736.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  737.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  738.                     /* in Shape library:
  739.                         x[0] = x[1] = xc
  740.                         y[0] = y[1] = yc
  741.                         w[0] = w[1] = radius = width = height
  742.                         h[0] = start_angle ; h[1] = end_engle
  743.                     */
  744.                         decimals = find_number_of_digits(precision);
  745.                         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);
  746.                         reset();
  747.                     break;
  748.                 }
  749.             }
  750.             break;
  751.         case ANGLE:
  752.         /*
  753.          @ angle xc,yc,width,start_angle,end_angle,color
  754.          @ width is in x-range
  755.          @ will zoom in/out
  756.          @ if size is controlled by command 'slider' use radians to set limits of slider.
  757.         */
  758.             for(i=0;i<7;i++){
  759.                 switch(i){
  760.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  761.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  762.                     case 2:double_data[2] = get_real(infile,0);break; /* width in pixels ! */
  763.                     case 3:double_data[3] = get_real(infile,0);break; /* start angle in degrees */
  764.                     case 4:double_data[4] = get_real(infile,0);break; /* end angle in degrees */
  765.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  766.                         decimals = find_number_of_digits(precision);
  767.                         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);
  768.                         reset();
  769.                     break;
  770.                 }
  771.             }
  772.             break;
  773.  
  774.         case ELLIPSE:
  775.         /*
  776.         @ ellipse xc,yc,radius_x,radius_y,color
  777.         @ a ellipse with center xc/yc in x/y-range
  778.         @ radius_x and radius_y are in pixels
  779.         @ may be set draggable / onclick
  780.         @ will shrink / expand on zoom out / zoom in
  781.         */
  782.             for(i=0;i<5;i++){
  783.                 switch(i){
  784.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  785.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  786.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  787.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  788.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  789.                         decimals = find_number_of_digits(precision);
  790.                         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);
  791.                         click_cnt++;reset();
  792.                     break;
  793.                 }
  794.             }
  795.             break;
  796.         case DASHTYPE:
  797.         /*
  798.         @ dashtype int ,int
  799.         @ When dashed is set, the objects will be drawn with this dashtyp
  800.         @ default value "dashtype 2,2"
  801.         */
  802.             for(i=0;i<2;i++){
  803.                 switch(i){
  804.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  805.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  806.                 }
  807.             }
  808.         break;
  809.         case CIRCLE:
  810.         /*
  811.         @ circle xc,yc,width (2*r in pixels),color
  812.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  813.         @ use command 'fillcolor color' to set the fillcolor
  814.         @ may be set draggable / onclick
  815.         @ will shrink / expand on zoom out / zoom in
  816.         */
  817.             for(i=0;i<4;i++){
  818.                 switch(i){
  819.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  820.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  821.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* for zoom in/out : radius in 'dx' xrange*/
  822.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  823.                         decimals = find_number_of_digits(precision);
  824.                         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);
  825.                         click_cnt++;reset();
  826.                     break;
  827.                 }
  828.             }
  829.             break;
  830.         case RAYS:
  831.         /*
  832.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  833.          @ draw rays in color 'color' and center (xc:yc)
  834.          @ may be set draggable or onclick (every individual ray)
  835.         */
  836.             stroke_color=get_color(infile,0);
  837.             fill_color = stroke_color;
  838.             double_data[0] = get_real(infile,0);/* xc */
  839.             double_data[1] = get_real(infile,0);/* yc */
  840.             i=2;
  841.             while( ! done ){     /* get next item until EOL*/
  842.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  843.                 if(i%2 == 0 ){
  844.                     double_data[i] = get_real(infile,0); /* x */
  845.                 }
  846.                 else
  847.                 {
  848.                     double_data[i] = get_real(infile,1); /* y */
  849.                 }
  850.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  851.                 i++;
  852.             }
  853.  
  854.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  855.             decimals = find_number_of_digits(precision);
  856.             for(c=2; c<i;c = c+2){
  857.                 click_cnt++;
  858.                 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);
  859.             }
  860.             reset();
  861.             break;
  862.         case ARROW:
  863.         /*
  864.         @ arrow x1,y1,x2,y2,h,color
  865.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  866.         @ use command 'linewidth int' to adjust thickness of the arrow
  867.         @ may be set draggable / onclick
  868.         */
  869.             for(i=0;i<6;i++){
  870.                 switch(i){
  871.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  872.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  873.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  874.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  875.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  876.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  877.                         decimals = find_number_of_digits(precision);
  878.                         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);
  879.                         click_cnt++;
  880.                         reset();
  881.                         break;
  882.                 }
  883.             }
  884.             break;
  885.         case ARROW2:
  886.         /*
  887.         @ arrow2 x1,y1,x2,y2,h,color
  888.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  889.         @ use command 'arrowhead int' to adjust the arrow head size
  890.         @ use command 'linewidth int' to adjust thickness of the arrow
  891.         @ may be set draggable / onclick
  892.         */
  893.             for(i=0;i<6;i++){
  894.                 switch(i){
  895.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  896.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  897.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  898.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  899.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  900.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  901.                         decimals = find_number_of_digits(precision);
  902.                         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);
  903.                         click_cnt++;reset();
  904.                         break;
  905.                 }
  906.             }
  907.             break;
  908.         case PARALLEL:
  909.         /*
  910.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  911.          @ can not be set "onclick" or "drag xy"
  912.         */
  913.             for( i = 0;i < 8; i++ ){
  914.                 switch(i){
  915.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  916.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  917.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  918.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  919.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  920.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  921.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  922.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  923.                     decimals = find_number_of_digits(precision);
  924.                     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);
  925.                     click_cnt++;reset();
  926.                     break;
  927.                     default: break;
  928.                 }
  929.             }
  930.             break;
  931.         case TRIANGLE:
  932.         /*
  933.          @triangle x1,y1,x2,y2,x3,y3,color
  934.          @may be set draggable / onclic
  935.         */
  936.             for(i=0;i<7;i++){
  937.                 switch(i){
  938.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  939.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  940.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  941.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  942.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  943.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  944.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  945.                         decimals = find_number_of_digits(precision);
  946.                         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);
  947.                         click_cnt++;reset();
  948.                         break;
  949.                     default: break;
  950.                 }
  951.             }
  952.             break;
  953.         case LATTICE:
  954.         /*
  955.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  956.          @can not be set "onclick" or "drag xy"
  957.         */
  958.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  959.             for( i = 0; i<9; i++){
  960.                 switch(i){
  961.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  962.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  963.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  964.                     case 3: int_data[3] = (int) -1*(get_real(infile,0));break; /* y1-values  -> y-pixels*/
  965.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  966.                     case 5: int_data[5] = (int) -1*(get_real(infile,0));break; /* y2-values  -> y-pixels*/
  967.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  968.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  969.                     case 8: stroke_color=get_color(infile,1);
  970.                         decimals = find_number_of_digits(precision);
  971.                         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);
  972.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  973.                         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);
  974.                         add_to_buffer(tmp_buffer);
  975.                     break;
  976.                     default:break;
  977.                 }
  978.             }
  979.             reset();
  980.             break;
  981.         case SNAPTOGRID:
  982.         /*
  983.          @ snaptogrid
  984.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  985.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  986.          @ 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 />
  987.         */
  988.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;");
  989.         break;
  990.         case XSNAPTOGRID:
  991.         /*
  992.          @ xsnaptogrid
  993.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  994.          @ in case of userdraw the drawn points will snap to xmajor grid
  995.          @ 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 />
  996.         */
  997.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 0;");
  998.         break;
  999.         case YSNAPTOGRID:
  1000.         /*
  1001.          @ ysnaptogrid
  1002.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1003.          @ in case of userdraw the drawn points will snap to ymajor grid
  1004.          @ 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 />
  1005.         */
  1006.         fprintf(js_include_file,"\nx_use_snap_to_grid = 0;y_use_snap_to_grid = 1;");
  1007.         break;
  1008.         case USERINPUT:
  1009.         /*
  1010.          @ userinput function | textarea | inputfield
  1011.          @ alternative command + argment to keywords "userinput_function","userinput_textarea" and "userinput_xy"
  1012.          @ textarea and inputfield are only usable in combination with some 'userdraw draw_ type'
  1013.          @ function may be used any time (e.g. without userdraw)
  1014.          @ use command "functionlabel some_string" to define the inputfield text : default value "f(x)="
  1015.          @ use command 'strokecolor some_color' to adjust the plot / functionlabel color
  1016.          @ the userinput for the function will be corrected by a simple 'rawmath' implementation...
  1017.         */
  1018.             temp = get_string_argument(infile,1);
  1019.             if(strstr(temp,"function") != 0  || strstr(temp,"curve") != 0  || strstr(temp,"plot") != 0 ){
  1020.              if( js_function[DRAW_JSFUNCTION] != 1 ){
  1021.               add_rawmath(js_include_file);/* add simple rawmath routine to correct user input of function */
  1022.               js_function[DRAW_JSFUNCTION] = 1;
  1023.               if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1024.               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]);
  1025.               input_cnt++;
  1026.              }
  1027.              else
  1028.              {
  1029.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  1030.               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]);
  1031.               input_cnt++;
  1032.              }
  1033.              if( use_js_math == FALSE){/* add this stuff only once...*/
  1034.               add_to_js_math(js_include_file);
  1035.               use_js_math = TRUE;
  1036.              }
  1037.              if( use_js_plot == FALSE){
  1038.               use_js_plot = TRUE;
  1039.               add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1040.              }
  1041.             }
  1042.             else
  1043.             {
  1044.              if(strstr(temp,"inputfield") != 0 ){
  1045.               if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1046.               if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1047.               use_input_xy = 1;
  1048.              }
  1049.              else
  1050.              {
  1051.               if(strstr(temp,"textarea") != 0 ){
  1052.                if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1053.                if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1054.                use_input_xy = 2;
  1055.               }
  1056.               else
  1057.               {
  1058.                 canvas_error("userinput argument may be \"function,inputfield,textarea\"");
  1059.               }
  1060.              }
  1061.             }
  1062.             break;
  1063.         case USERTEXTAREA_XY:
  1064.         /*
  1065.         @ usertextarea_xy
  1066.         @ keyword
  1067.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  1068.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  1069.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1070.         @ user drawings will not zoom on zooming (or pan on panning)
  1071.         */
  1072.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1073.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1074.             use_input_xy = 2;
  1075.             break;
  1076.         case USERINPUT_XY:
  1077.         /*
  1078.         @ userinput_xy
  1079.         @ keyword
  1080.         @ to be used in combination with command "userdraw object_type,color"
  1081.         @ 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)
  1082.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1083.         @ 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.
  1084.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  1085.         @ user drawings will not zoom on zooming (or pan on panning)
  1086.         */
  1087.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  1088.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1089.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1090.             use_input_xy = 1;
  1091.             break;
  1092.         case FUNCTION_LABEL:
  1093.             function_label = get_string_argument(infile,1);
  1094.             break;
  1095.         case USERINPUT_FUNCTION:
  1096.         /*
  1097.         @ userinput_function
  1098.         @ keyword
  1099.         @ if set , a inputfield will be added to the page
  1100.         @ repeat keyword for more function input fields
  1101.         @ the userinput value will be plotted in the canvas
  1102.         @ 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
  1103.         @ 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
  1104.         @ incompatible with command 'intooltip link_text_or_image' : it uses the tooltip div for adding the inputfield
  1105.         */
  1106.             if( js_function[DRAW_JSFUNCTION] != 1 ){
  1107.              js_function[DRAW_JSFUNCTION] = 1;
  1108.              add_rawmath(js_include_file);
  1109.              if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1110.              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]);
  1111.              input_cnt++;
  1112.             }
  1113.             else
  1114.             {
  1115.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  1116.              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]);
  1117.              input_cnt++;
  1118.             }
  1119.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1120.              add_to_js_math(js_include_file);
  1121.              use_js_math = TRUE;
  1122.             }
  1123.             if( use_js_plot == FALSE){
  1124.              use_js_plot = TRUE;
  1125.              add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1126.             }
  1127.             break;
  1128.         case USERDRAW:
  1129.         /*
  1130.         @ userdraw object_type,color
  1131.         @ 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>
  1132.         @ 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)
  1133.         @ 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
  1134.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  1135.         @ 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)
  1136.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  1137.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  1138.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  1139.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  1140.         @ may be combined with keyword 'userinput_xy' or
  1141.         @ 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.!
  1142.         */
  1143.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  1144.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  1145.             }
  1146.             reply_precision = precision;
  1147.             use_userdraw = TRUE;
  1148.             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]);
  1149.             draw_type = get_string_argument(infile,0);
  1150.             stroke_color = get_color(infile,1);
  1151.             if( strcmp(draw_type,"point") == 0 ){
  1152.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1153.                 if(reply_format == 0 ){reply_format = 8;}
  1154.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1155.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1156.                 if(use_input_xy == 1){
  1157.                     add_input_circle(js_include_file,1,1);
  1158.                     add_input_xy(js_include_file,canvas_root_id);
  1159.                 }
  1160.                 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);
  1161.             }
  1162.             else
  1163.             if( strcmp(draw_type,"points") == 0 ){
  1164.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1165.                 if(reply_format == 0 ){reply_format = 8;}
  1166.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1167.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1168.                 if(use_input_xy == 1){
  1169.                     add_input_circle(js_include_file,1,2);
  1170.                     add_input_xy(js_include_file,canvas_root_id);
  1171.                 }
  1172.                 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);
  1173.             }
  1174.             else
  1175.             if( strcmp(draw_type,"segment") == 0 ){
  1176.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1177.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1178.                 if(reply_format == 0){reply_format = 11;}
  1179.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1180.                 if(use_input_xy == 1){
  1181.                     add_input_segment(js_include_file,1);
  1182.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1183.                 }
  1184.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1185.             }
  1186.             else
  1187.             if( strcmp(draw_type,"polyline") == 0 ){
  1188.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  1189.                 if(reply_format == 0){reply_format = 23;}
  1190.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1191.                 if( use_input_xy == 1 ){
  1192.                     add_input_polyline(js_include_file);
  1193.                     add_input_xy(js_include_file,canvas_root_id);
  1194.                 }
  1195.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1196.             }
  1197.             else
  1198.             if( strcmp(draw_type,"segments") == 0 ){
  1199.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1200.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1201.                 if(reply_format == 0){reply_format = 11;}
  1202.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1203.                 if(use_input_xy == 1){
  1204.                     add_input_segment(js_include_file,2);
  1205.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1206.                 }
  1207.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1208.             }
  1209.             else
  1210.             if( strcmp(draw_type,"circle") == 0 ){
  1211.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1212.                 if(reply_format == 0){reply_format = 10;}
  1213.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1214.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1215.                 if(use_input_xy == 1){
  1216.                     add_input_circle(js_include_file,2,1);
  1217.                     add_input_xyr(js_include_file,canvas_root_id);
  1218.                 }
  1219.                 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]);
  1220.             }
  1221.             else
  1222.             if( strcmp(draw_type,"circles") == 0 ){
  1223.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1224.                 if(reply_format == 0){reply_format = 10;}
  1225.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1226.                 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]);
  1227.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1228.                 if(use_input_xy == 1){
  1229.                     add_input_circle(js_include_file,2,2);
  1230.                     add_input_xyr(js_include_file,canvas_root_id);
  1231.                 }
  1232.             }
  1233.             else
  1234.             if(strcmp(draw_type,"crosshair") == 0 ){
  1235.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1236.                 if(reply_format == 0){reply_format = 8;}
  1237.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1238.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1239.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1240.                 if(use_input_xy == 1){
  1241.                     add_input_crosshair(js_include_file,1);
  1242.                     add_input_xy(js_include_file,canvas_root_id);
  1243.                 }
  1244.             }
  1245.             else
  1246.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1247.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1248.                 if(reply_format == 0){reply_format = 8;}
  1249.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1250.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1251.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1252.                 if(use_input_xy == 1){
  1253.                     add_input_crosshair(js_include_file,2);
  1254.                     add_input_xy(js_include_file,canvas_root_id);
  1255.                 }
  1256.             }
  1257.             else
  1258.             if(strcmp(draw_type,"freehandline") == 0 ){
  1259.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1260.                 if(reply_format == 0){reply_format = 6;}
  1261.                 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]);
  1262.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1263.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1264.             }
  1265.             else
  1266.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1267.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1268.                 if(reply_format == 0){reply_format = 6;}
  1269.                 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]);
  1270.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1271.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1272.             }
  1273.             else
  1274.             if(strcmp(draw_type,"path") == 0 ){
  1275.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1276.                 if(reply_format == 0){reply_format = 6;}
  1277.                 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]);
  1278.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1279.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1280.             }
  1281.             else
  1282.             if(strcmp(draw_type,"paths") == 0 ){
  1283.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1284.                 if(reply_format == 0){reply_format = 6;}
  1285.                 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]);
  1286.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1287.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1288.             }
  1289.             else
  1290.             if(strcmp(draw_type,"arrows") == 0 ){
  1291.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1292.                 if(reply_format == 0){reply_format = 11;}
  1293.                 add_js_arrows(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1294.                 if(use_input_xy == 1){
  1295.                     add_input_arrow(js_include_file,2);
  1296.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1297.                 }
  1298.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1299.             }
  1300.             else
  1301.             if(strcmp(draw_type,"arrows2") == 0 ){
  1302.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1303.                 if(reply_format == 0){reply_format = 11;}
  1304.                 add_js_arrows(js_include_file,2,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1305.                 if(use_input_xy == 1){
  1306.                     add_input_arrow(js_include_file,1);
  1307.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1308.                 }
  1309.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1310.             }
  1311.             else
  1312.             if(strcmp(draw_type,"arrow2") == 0 ){
  1313.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1314.                 if(reply_format == 0){reply_format = 11;}
  1315.                 add_js_arrows(js_include_file,1,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1316.                 if(use_input_xy == 1){
  1317.                     add_input_arrow(js_include_file,1);
  1318.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1319.                 }
  1320.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1321.             }
  1322.             else
  1323.             if(strcmp(draw_type,"arrow") == 0 ){
  1324.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1325.                 if(reply_format == 0){reply_format = 11;}
  1326.                 add_js_arrows(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1327.                 if(use_input_xy == 1){
  1328.                     add_input_arrow(js_include_file,1);
  1329.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1330.                 }
  1331.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1332.             }
  1333.             else
  1334.             if(strcmp(draw_type,"polygon") == 0){
  1335.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1336.                 if(reply_format == 0){reply_format = 2;}
  1337.                 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]);
  1338.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1339.                 if(use_input_xy == 2){
  1340.                   add_textarea_polygon(js_include_file);
  1341.                   add_textarea_xy(js_include_file,canvas_root_id);
  1342.                 }
  1343.             }
  1344.             else
  1345.             if(strncmp(draw_type,"poly",4) == 0){
  1346.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1347.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1348.                 if(reply_format == 0){reply_format = 2;}
  1349.                 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]);
  1350.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1351.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1352.             }
  1353.             else
  1354.             if(strcmp(draw_type,"triangle") == 0){
  1355.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1356.                 if(reply_format == 0){reply_format = 2;}
  1357.                 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]);
  1358.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1359.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1360.             }
  1361.             else
  1362.             if( strcmp(draw_type,"hline") == 0 ){
  1363.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1364.                 if(reply_format == 0){reply_format = 11;}
  1365.                 add_js_hlines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1366.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1367.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1368.             }
  1369.             else
  1370.             if( strcmp(draw_type,"hlines") == 0 ){
  1371.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1372.                 if(reply_format == 0){reply_format = 11;}
  1373.                 add_js_hlines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1374.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1375.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1376.             }
  1377.             else
  1378.             if( strcmp(draw_type,"vline") == 0 ){
  1379.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1380.                 if(reply_format == 0){reply_format = 11;}
  1381.                 add_js_hlines(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1382.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1383.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1384.             }
  1385.             else
  1386.             if( strcmp(draw_type,"vlines") == 0 ){
  1387.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1388.                 if(reply_format == 0){reply_format = 11;}
  1389.                 add_js_hlines(js_include_file,4,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1390.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1391.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1392.             }
  1393.             else
  1394.             if( strcmp(draw_type,"line") == 0 ){
  1395.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1396.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1397.                 if(reply_format == 0){reply_format = 11;}
  1398.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1399.                 if( use_input_xy == 1 ){
  1400.                     add_input_line(js_include_file,1);
  1401.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1402.                 }
  1403.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1404.             }
  1405.             else
  1406.             if( strcmp(draw_type,"lines") == 0 ){
  1407.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1408.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1409.                 if(reply_format == 0){reply_format = 11;}
  1410.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1411.                 if( use_input_xy == 1 ){
  1412.                     add_input_line(js_include_file,2);
  1413.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1414.                 }
  1415.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1416.             }
  1417.             else
  1418.             if( strcmp(draw_type,"demilines") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1419.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1420.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1421.                 if(reply_format == 0){reply_format = 11;}
  1422.                 add_js_demilines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1423.                 if( use_input_xy == 1 ){
  1424.                     add_input_demiline(js_include_file,2);
  1425.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1426.                 }
  1427.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1428.             }
  1429.             else
  1430.             if( strcmp(draw_type,"demiline") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1431.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1432.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1433.                 if(reply_format == 0){reply_format = 11;}
  1434.                 add_js_demilines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1435.                 if( use_input_xy == 1 ){
  1436.                     add_input_demiline(js_include_file,1);
  1437.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1438.                 }
  1439.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1440.             }
  1441.             else
  1442.             if( strcmp(draw_type,"rects") == 0){
  1443.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1444.                 if(reply_format == 0){reply_format = 2;}
  1445.                 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]);
  1446.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1447.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1448.             }
  1449.             else
  1450.             if( strcmp(draw_type,"roundrects") == 0){
  1451.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1452.                 if(reply_format == 0){reply_format = 2;}
  1453.                 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]);
  1454.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1455.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1456.             }
  1457.             else
  1458.             if( strcmp(draw_type,"rect") == 0){
  1459.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1460.                 if(reply_format == 0){reply_format = 2;}
  1461.                 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]);
  1462.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1463.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1464.             }
  1465.             else
  1466.             if( strcmp(draw_type,"roundrect") == 0){
  1467.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1468.                 if(reply_format == 0){reply_format = 2;}
  1469.                 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]);
  1470.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1471.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1472.             }
  1473.             else
  1474.             if( strcmp(draw_type,"arcs") == 0){
  1475.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1476.                 if(reply_format == 0){reply_format = 25;}
  1477.                 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]);
  1478.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1479.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1480.             }
  1481.             else
  1482.             if( strcmp(draw_type,"arc") == 0){
  1483.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1484.                 if(reply_format == 0){reply_format = 25;}
  1485.                 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]);
  1486.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1487.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1488.             }
  1489.             else
  1490.             if( strcmp(draw_type,"text") == 0){
  1491.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1492.                 if(reply_format == 0){reply_format = 17;}
  1493.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,font_color,stroke_opacity);
  1494.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1495.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1496.             }
  1497.             else
  1498.             if( strcmp(draw_type,"inputs") == 0){
  1499.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1500.                 if(reply_format == 0){reply_format = 27;}
  1501.                 add_js_inputs(js_include_file,canvas_root_id,2,input_cnt,input_style,line_width);
  1502.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1503.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1504.             }
  1505.             else
  1506.             if( strcmp(draw_type,"input") == 0){
  1507.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1508.                 if(reply_format == 0){reply_format = 27;}
  1509.                 add_js_inputs(js_include_file,canvas_root_id,1,input_cnt,input_style,line_width);
  1510.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1511.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1512.             }
  1513.             else
  1514.             {
  1515.                 canvas_error("unknown drawtype or typo? ");
  1516.             }
  1517.             reset();
  1518.         break;
  1519.         case PLOTSTEPS:
  1520.             /*
  1521.              @ plotsteps a_number
  1522.              @ default 150
  1523.              @ use with care !
  1524.             */
  1525.             plot_steps = (int) (get_real(infile,1));
  1526.             break;
  1527.         case FONTSIZE:
  1528.         /*
  1529.          @fontsize font_size
  1530.          @default value 12
  1531.         */
  1532.             font_size = (int) (get_real(infile,1));
  1533.             break;
  1534.         case FONTCOLOR:
  1535.         /*
  1536.          @fontcolor color
  1537.          @color: hexcolor or colorname
  1538.          @default: black
  1539.          @example usage: x/y-axis text
  1540.         */
  1541.             font_color = get_color(infile,1);
  1542.             break;
  1543.         case ANIMATE:
  1544.         /*
  1545.          @animate type
  1546.          @REMOVED : this should be done with a slider
  1547.          @type may be "point" (nothing else , yet...)
  1548.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1549.          @will animate a point on the next plot/curve command
  1550.          @the curve will not be draw
  1551.          @moves repeatedly from xmin to xmax
  1552.         */
  1553.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1554.             break;
  1555.         case LEVELCURVE:
  1556.         /*
  1557.         @levelcurve color,expression in x/y,l1,l2,...
  1558.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1559.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1560.         @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
  1561.         @note : the arrays for holding the javascript data are limited in size
  1562.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1563.         */
  1564.             fill_color = get_color(infile,0);
  1565.             char *fun1 = get_string_argument(infile,0);
  1566.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1567.             i = 0;
  1568.             done = FALSE;
  1569.             while( !done ){
  1570.              double_data[i] = get_real(infile,1);
  1571.              i++;
  1572.             }
  1573.             for(c = 0 ; c < i; c++){
  1574.              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);
  1575.              click_cnt++;
  1576.             }
  1577.             reset();
  1578.             break;
  1579.         case TRACE_JSCURVE:
  1580.         /*
  1581.          @trace_jscurve some_math_function
  1582.          @will use a crosshair to trace the jsmath curve
  1583.          @two inputfields will display the current x/y-values (numerical evaluation by javascript)
  1584.          @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
  1585.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1586.          @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...
  1587.         */
  1588.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1589.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1590.             if( use_js_math == FALSE){
  1591.                 add_to_js_math(js_include_file);
  1592.                 use_js_math = TRUE;
  1593.             }
  1594.             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);
  1595.             break;
  1596.         case JSMATH:
  1597.         /*
  1598.             @jsmath some_math_function
  1599.             @will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  1600.             @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
  1601.             @example: jsmath sin(x^2)
  1602.             @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...
  1603.         */
  1604.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1605.             if( use_js_math == FALSE){
  1606.                 add_to_js_math(js_include_file);
  1607.                 use_js_math = TRUE;
  1608.             }
  1609.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1610.             break;
  1611.         case JSCURVE:
  1612.         /*
  1613.          @jscurve color,formula(x)
  1614.          @your function will be plotted by the javascript engine of the client browser.
  1615.          @use only basic math in your curve:<br /> sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e
  1616.          @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...
  1617.          @Attention : last "precision" command in the canvasdraw script determines the calculation precision of the javascript curve plot !
  1618.          @no validity check is done by wims.
  1619.          @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
  1620.          @use command 'trace_jscurve formula(x)` for tracing
  1621.          @use commmand 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  1622.          @can not be set draggable / onclick (yet)
  1623.          @commands plotjump / plotstep are not active for 'jscurve'
  1624.         */
  1625.             stroke_color = get_color(infile,0);
  1626.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1627.                 add_to_js_math(js_include_file);
  1628.                 use_js_math = TRUE;
  1629.             }
  1630.             if( use_js_plot == FALSE){
  1631.                 use_js_plot = TRUE;
  1632.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1633.             }
  1634.             temp = get_string_argument(infile,1);
  1635.             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]);
  1636.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1637.             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]);
  1638.             add_to_buffer(tmp_buffer);
  1639.             use_js_plot++; /* we need to create multiple canvasses, so we may zoom and pan ?? */
  1640.  
  1641.         break;
  1642.         case CURVE:
  1643.         /*
  1644.          @curve color,formula(x)
  1645.          @plot color,formula(x)
  1646.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1647.          @use command "precision" to increase the number of digits of the plotted points
  1648.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1649.          @may be set draggable / onclick
  1650.         */
  1651.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1652.                 use_parametric = FALSE;
  1653.                 stroke_color = get_color(infile,0);
  1654.                 char *fun1 = get_string_argument(infile,0);
  1655.                 char *fun2 = get_string_argument(infile,1);
  1656.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1657.                 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);
  1658.                 click_cnt++;
  1659.             }
  1660.             else
  1661.             {
  1662.                 stroke_color = get_color(infile,0);
  1663.                 char *fun1 = get_string_argument(infile,1);
  1664.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1665.                 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);
  1666.                 click_cnt++;
  1667.             }
  1668.             animation_type = 9;/* reset to curve plotting without animation */
  1669.             reset();
  1670.             break;
  1671.         case FLY_TEXT:
  1672.         /*
  1673.         @ text fontcolor,x,y,font,text_string
  1674.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1675.         @ use command 'fontsize' to increase base fontsize for these keywords
  1676.         @ may be set "onclick" or "drag xy"
  1677.         @ backwards compatible with flydraw
  1678.         @ unicode supported: text red,0,0,huge,\\u2232
  1679.         @ use command 'string' combined with 'fontfamily' for a more fine grained control over html5 canvas text element
  1680.         @ 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.
  1681.         */
  1682.             for(i = 0; i < 5 ;i++){
  1683.                 switch(i){
  1684.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1685.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1686.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1687.                     case 3: fly_font = get_string_argument(infile,0);
  1688.                             if(strcmp(fly_font,"giant") == 0){
  1689.                                 font_size = (int)(font_size + 24);
  1690.                             }
  1691.                             else
  1692.                             {
  1693.                                 if(strcmp(fly_font,"huge") == 0){
  1694.                                     font_size = (int)(font_size + 14);
  1695.                                 }
  1696.                                 else
  1697.                                 {
  1698.                                     if(strcmp(fly_font,"large") == 0){
  1699.                                         font_size = (int)(font_size + 6);
  1700.                                         }
  1701.                                         else
  1702.                                         {
  1703.                                             if(strcmp(fly_font,"small") == 0){
  1704.                                                 font_size = (int)(font_size - 4);
  1705.                                                 if(font_size<0){font_size = 8;}
  1706.                                         }
  1707.                                     }
  1708.                                 }
  1709.                             }
  1710.                             break; /* font_size ! */
  1711.                     case 4:
  1712.                         temp = get_string_argument(infile,1);
  1713.                         decimals = find_number_of_digits(precision);
  1714.                         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);
  1715.                         click_cnt++;reset();break;
  1716.                     default:break;
  1717.                 }
  1718.             }
  1719.             break;
  1720.         case FLY_TEXTUP:
  1721.         /*
  1722.          @ textup fontcolor,x,y,font,text_string
  1723.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1724.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1725.          @ use command 'fontsize' to increase base fontsize for the keywords
  1726.          @ backwards compatible with flydraw
  1727.          @ unicode supported: textup red,0,0,huge,\\u2232
  1728.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1729.          @ 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.
  1730.         */
  1731.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1732.             for(i = 0; i<5 ;i++){
  1733.                 switch(i){
  1734.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1735.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1736.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1737.                     case 3: fly_font = get_string_argument(infile,0);
  1738.                             if(strcmp(fly_font,"giant") == 0){
  1739.                                 font_size = (int)(font_size + 24);
  1740.                             }
  1741.                             else
  1742.                             {
  1743.                                 if(strcmp(fly_font,"huge") == 0){
  1744.                                     font_size = (int)(font_size + 14);
  1745.                                 }
  1746.                                 else
  1747.                                 {
  1748.                                     if(strcmp(fly_font,"large") == 0){
  1749.                                         font_size = (int)(font_size + 6);
  1750.                                         }
  1751.                                         else
  1752.                                         {
  1753.                                             if(strcmp(fly_font,"small") == 0){
  1754.                                                 font_size = (int)(font_size - 4);
  1755.                                                 if(font_size<0){font_size = 8;}
  1756.                                         }
  1757.                                     }
  1758.                                 }
  1759.                             }
  1760.                             break; /* font_size ! */
  1761.                     case 4:
  1762.                     decimals = find_number_of_digits(precision);
  1763.                     temp = get_string_argument(infile,1);
  1764.                     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);
  1765.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1766.                     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);
  1767.                     add_to_buffer(tmp_buffer);
  1768.                     break;
  1769.                     default:break;
  1770.                 }
  1771.             }
  1772.             reset();
  1773.             break;
  1774.         case FONTFAMILY:
  1775.         /*
  1776.          @ fontfamily font_description
  1777.          @ set the font family; for browsers that support it
  1778.          @ font_description: Ariel ,Courier, Helvetica etc
  1779.          @ 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
  1780.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1781.         */
  1782.             font_family = get_string(infile,1);
  1783.             break;
  1784.         case STRINGUP:
  1785.         /*
  1786.          @ stringup color,x,y,rotation_degrees,the text string
  1787.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1788.          @ unicode supported: stringup red,0,0,45,\\u2232
  1789.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1790.  
  1791.         */
  1792.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1793.             for(i=0;i<6;i++){
  1794.                 switch(i){
  1795.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1796.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1797.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1798.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1799.                     case 4: decimals = find_number_of_digits(precision);
  1800.                             temp = get_string_argument(infile,1);
  1801.                             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);
  1802.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1803.                             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);
  1804.                             add_to_buffer(tmp_buffer);
  1805.                             break;
  1806.                     default:break;
  1807.                 }
  1808.             }
  1809.             reset();
  1810.             break;
  1811.         case STRING:
  1812.         /*
  1813.          @ string color,x,y,the text string
  1814.          @ may be set "onclick" or "drag xy"
  1815.          @ unicode supported: string red,0,0,\\u2232
  1816.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1817.         */
  1818.             for(i=0;i<5;i++){
  1819.                 switch(i){
  1820.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1821.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1822.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1823.                     case 3: decimals = find_number_of_digits(precision);
  1824.                         temp = get_string_argument(infile,1);
  1825.                         decimals = find_number_of_digits(precision);
  1826.                         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);
  1827.                         click_cnt++;reset();break;
  1828.                     default:break;
  1829.                 }
  1830.             }
  1831.             break;
  1832.         case CENTERSTRING:
  1833.         /*
  1834.          @ centerstring color,y-value,the text string
  1835.          @ title color,y-value,the text string
  1836.          @ draw a string centered on the canvas at y = y-value
  1837.          @ can not set "onclick" or "drag xy" (...)
  1838.          @ unicode supported: centerstring red,5,\\u2232
  1839.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1840.         */
  1841.             if( js_function[DRAW_CENTERSTRING] != 1 ){ js_function[DRAW_CENTERSTRING] = 1;}
  1842.             for(i=0;i<3;i++){
  1843.                 switch(i){
  1844.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1845.                     case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
  1846.                     case 2: temp = get_string_argument(infile,1);
  1847.                             /* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
  1848.                             decimals = find_number_of_digits(precision);
  1849.                             string_length = snprintf(NULL,0,
  1850.                             "draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  1851.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1852.                             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);
  1853.                             add_to_buffer(tmp_buffer);
  1854.                             break;
  1855.                     default:break;
  1856.                 }
  1857.             }
  1858.             break;
  1859.         case MATHML:
  1860.         /*
  1861.         @ mathml x1,y1,x2,y2,mathml_string
  1862.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1863.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1864.         @ 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();"
  1865.         @ 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....
  1866.  
  1867.         */
  1868.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1869.             for(i=0;i<5;i++){
  1870.                 switch(i){
  1871.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1872.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1873.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1874.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1875.                     case 4: decimals = find_number_of_digits(precision);
  1876.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1877.                             temp = get_string(infile,1);
  1878.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1879.                             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);
  1880.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1881.                             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);
  1882.                             add_to_buffer(tmp_buffer);
  1883.                             /*
  1884.                              in case inputs are present , trigger adding the read_mathml()
  1885.                              if no other reply_format is defined
  1886.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1887.                              */
  1888.                             if(strstr(temp,"mathml0") != NULL){
  1889.                              if(reply_format == 0 ){reply_format = 16;} /* no other reply type is defined */
  1890.                             }
  1891.                             break;
  1892.                     default:break;
  1893.                 }
  1894.             }
  1895.             reset();
  1896.             break;
  1897.         case HTTP:
  1898.         /*
  1899.          @http x1,y1,x2,y2,http://some_adress.com
  1900.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1901.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1902.          @can not be 'set onclick' or 'drag xy'
  1903.         */
  1904.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}
  1905.             for(i=0;i<5;i++){
  1906.                 switch(i){
  1907.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1908.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1909.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1910.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1911.                     case 4: decimals = find_number_of_digits(precision);
  1912.                             temp = get_string(infile,1);
  1913.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1914.                             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);
  1915.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1916.                             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);
  1917.                             add_to_buffer(tmp_buffer);
  1918.                     break;
  1919.                 }
  1920.             }
  1921.             reset();
  1922.             break;
  1923.         case HTML:
  1924.         /*
  1925.          @ html x1,y1,x2,y2,html_string
  1926.          @ all tags are allowed
  1927.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1928.          @ 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.
  1929.  
  1930.          note: uses the same code as 'mathml'
  1931.         */
  1932.             break;
  1933.         case X_AXIS_STRINGS:
  1934.         /*
  1935.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1936.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1937.          @ use these x-axis values in stead of default xmin...xmax
  1938.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1939.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1940.          @ 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
  1941.          @ 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
  1942.         */
  1943.             temp = get_string(infile,1);
  1944.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1945.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1946.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1947.             use_axis_numbering = 1;
  1948.             break;
  1949.         case Y_AXIS_STRINGS:
  1950.         /*
  1951.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1952.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1953.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1954.          @ use these y-axis values in stead of default ymin...ymax
  1955.          @ 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
  1956.         */
  1957.             temp = get_string(infile,1);
  1958.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1959.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1960.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1961.             use_axis_numbering = 1;
  1962.             break;
  1963.  
  1964.         case AXIS_NUMBERING:
  1965.         /*
  1966.             @ axisnumbering
  1967.             @ keyword, no arguments required
  1968.         */
  1969.             use_axis_numbering = 1;
  1970.             break;
  1971.         case AXIS:
  1972.         /*
  1973.             @ axis
  1974.             @ keyword, no arguments required
  1975.  
  1976.         */
  1977.             use_axis = TRUE;
  1978.             break;
  1979.         case KILLSLIDER:
  1980.         /*
  1981.          @ killslider
  1982.          @ keyword, no arguments required
  1983.          @ ends grouping of object under a preciously defined slider
  1984.         */
  1985.             slider = 0;
  1986.             break;
  1987.         case SLIDER:
  1988.         /*
  1989.         @ slider start_value,end_value,width px,height px,type,label
  1990.         @ type: xy,x,y,angle
  1991.         @ if a value display is desired, use<br />type:xy display,x display,y display,angle radian,angle degree
  1992.         @ is a unit for x / y value display is needed, use commands 'xunit' and / or 'yunit'
  1993.         @ use commmand 'slider' before draggable/clickable objects.
  1994.         @ 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'
  1995.         @ amount of sliders is not limited.
  1996.         @ javascript:read_dragdrop(); will return an array with 'object_number:slider_value'
  1997.         @ type=xy: will produce a 2D 'slider' [rectangle width x heigh px] in your web page
  1998.         @ every draggable object may have it's own slider (no limit in amount of sliders)
  1999.         @ label: some slider text
  2000.         @ use fillcolor for slider ball
  2001.         @ use strokecolor for slider bar
  2002.         @ use fontfamily / fontcolor to set used fonts
  2003.         @ use opacity (only fill opacity will be used) to set transparency
  2004.         @ the slider canvas will be added to the 'tooltip div' : so incompatible with command tooltip ; setlimits etc
  2005.         */
  2006.             for(i=0; i<6 ; i++){
  2007.                 switch(i){
  2008.                     case 0: double_data[0] = get_real(infile,0);break; /* start value */
  2009.                     case 1: double_data[1] = get_real(infile,0);break; /* end value */
  2010.                     case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
  2011.                     case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
  2012.                     case 4: temp = get_string_argument(infile,0); /* type : xy,x,y,angle */
  2013.                     /* xy display*/
  2014.                     if(strstr(temp,"xy")!= 0){
  2015.                      slider = 4;
  2016.                     }
  2017.                     else
  2018.                     {
  2019.                      if(strstr(temp,"x") != 0){
  2020.                       slider = 1;
  2021.                      }
  2022.                      else
  2023.                      {
  2024.                       if(strstr(temp,"y") != 0){
  2025.                        slider = 2;
  2026.                       }
  2027.                       else
  2028.                       {
  2029.                        if(strstr(temp,"angle") != 0){ /* angle diplay radian */
  2030.                         slider = 3;
  2031.                        }
  2032.                        else
  2033.                        {
  2034.                         canvas_error("slider types may be : x , y , xy , angle");
  2035.                        }
  2036.                       }
  2037.                      }
  2038.                     }
  2039.                     if(strstr(temp,"display")!=0){
  2040.                      use_slider_display = 1; /* show x xy values in canvas window */
  2041.                     }
  2042.                     else
  2043.                     {
  2044.                      if(strstr(temp,"degree")!= 0){
  2045.                       use_slider_display = 2; /* show angle values in canvas window */
  2046.                      }
  2047.                      else
  2048.                      {
  2049.                       if(strstr(temp,"radian")!=0){
  2050.                        use_slider_display = 3; /* show radian values in canvas window */
  2051.                       }
  2052.                      }
  2053.                     }
  2054.                     if(use_slider_display != 0 && slider_cnt == 0){ /*add just once the display js-code */
  2055.                      add_slider_display(js_include_file,canvas_root_id,precision,font_size,font_color,stroke_opacity);
  2056.                     }
  2057.                     break;
  2058.                     case 5: /* some string used for slider description  */
  2059.                     slider_cnt++;
  2060.                     if(slider == 4){
  2061.                      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 );
  2062.                     }else{
  2063.                      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);
  2064.                     }
  2065.                     break;
  2066.                 }
  2067.              }
  2068.             break;
  2069.         case SGRAPH:
  2070.         /*
  2071.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  2072.          @ primitive implementation of a 'broken scale' graph...
  2073.          @ 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 />
  2074.          @ 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
  2075.         */
  2076.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  2077.             for(i = 0 ; i < 8 ;i++){
  2078.                 switch(i){
  2079.                     case 0:double_data[0] = get_real(infile,0);break;
  2080.                     case 1:double_data[1] = get_real(infile,0);break;
  2081.                     case 2:double_data[2] = get_real(infile,0);break;
  2082.                     case 3:double_data[3] = get_real(infile,0);break;
  2083.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  2084.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  2085.                     case 6:stroke_color = get_color(infile,0);break;
  2086.                     case 7:font_color = get_color(infile,1);
  2087.                     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);
  2088.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2089.                     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);
  2090.                     add_to_buffer(tmp_buffer);
  2091.                     break;
  2092.                     default:break;
  2093.                 }
  2094.             }
  2095.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  2096.             break;
  2097.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  2098.         /*
  2099.          @ grid step_x,step_y,gridcolor
  2100.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  2101.          @ 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
  2102.          @ 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)
  2103.          @ can not be set "onclick" or "drag xy"
  2104.          @ 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')
  2105.          @ 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')
  2106.          @ 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')
  2107.         */
  2108.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  2109.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  2110.             for(i=0;i<4;i++){
  2111.                 switch(i){
  2112.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  2113.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  2114.                     case 2:
  2115.                     if( use_axis == TRUE ){
  2116.                         stroke_color = get_color(infile,0);
  2117.                         done = FALSE;
  2118.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  2119.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  2120.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  2121.                         fill_color = get_color(infile,1); /* used as axis_color*/
  2122.                     }
  2123.                     else
  2124.                     {
  2125.                         int_data[0] = 1;
  2126.                         int_data[1] = 1;
  2127.                         stroke_color = get_color(infile,1);
  2128.                         fill_color = stroke_color;
  2129.                     }
  2130.                     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 !");}
  2131.                     /* set snap_x snap_y values in pixels */
  2132.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  2133.                     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);
  2134.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2135.                     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);
  2136.                     add_to_buffer(tmp_buffer);
  2137.                     break;
  2138.                 }
  2139.             }
  2140.             reset();
  2141.             break;
  2142.         case OPACITY:
  2143.         /*
  2144.         @ opacity 0-255,0-255
  2145.         @
  2146.         */
  2147.             for(i = 0 ; i<2;i++){
  2148.                 switch(i){
  2149.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  2150.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  2151.                     default: break;
  2152.                 }
  2153.             }
  2154.             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 ? */
  2155.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  2156.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  2157.             break;
  2158.         case ROTATE:
  2159.         /*
  2160.          @rotate rotation_angle
  2161.          @angle in degrees
  2162.         */
  2163.             use_rotate = TRUE;
  2164.             angle = -1*(get_real(infile,1));/* -1 : to be compatible with Flydraw... */
  2165.             break;
  2166.         case KILLAFFINE:
  2167.         /*
  2168.         @ killaffine
  2169.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  2170.         */
  2171.             use_affine = FALSE;
  2172.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2173.             break;
  2174.         case AFFINE:
  2175.         /*
  2176.          @affine a,b,c,d,tx,ty
  2177.          @ defines a transformation matrix for subsequent objects
  2178.          @ use keyword 'killaffine' to end the transformation
  2179.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  2180.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  2181.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  2182.          @ a : Scales the drawings horizontally
  2183.          @ b : Skews the drawings horizontally
  2184.          @ c : Skews the drawings vertically
  2185.          @ d : Scales the drawings vertically
  2186.          @ tx: Moves the drawings horizontally in xrange coordinate system
  2187.          @ ty: Moves the drawings vertically in yrange coordinate system
  2188.          @ the data precision is 2 decimals (printf : %2.f)
  2189.         */
  2190.             for(i = 0 ; i<6;i++){
  2191.                 switch(i){
  2192.                     case 0: double_data[0] = get_real(infile,0);break;
  2193.                     case 1: double_data[1] = get_real(infile,0);break;
  2194.                     case 2: double_data[2] = get_real(infile,0);break;
  2195.                     case 3: double_data[3] = get_real(infile,0);break;
  2196.                     case 4: double_data[4] = get_real(infile,0);break;
  2197.                     case 5: double_data[5] = get_real(infile,1);
  2198.                         use_affine = TRUE;
  2199.                         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));
  2200.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2201.                         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));
  2202.                         break;
  2203.                     default: break;
  2204.                 }
  2205.             }
  2206.         break;
  2207.         case KILLTRANSLATION:
  2208.         /*
  2209.          killtranslation
  2210.         */
  2211.             use_affine = FALSE;
  2212.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2213.             break;
  2214.         case TRANSLATION:
  2215.         /*
  2216.          @translation tx,ty
  2217.          @will translate the next object tx in xrange and ty in yrange
  2218.          @uase command 'killtranstation' to end the command
  2219.         */
  2220.             for(i = 0 ; i<2;i++){
  2221.                 switch(i){
  2222.                     case 0: double_data[0] = get_real(infile,0);break;
  2223.                     case 1: double_data[1] = get_real(infile,1);
  2224.                         use_affine = TRUE;
  2225.                         string_length = snprintf(NULL,0, "[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2226.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2227.                         snprintf(affine_matrix,string_length,"[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2228.                         break;
  2229.                     default: break;
  2230.                 }
  2231.             }
  2232.         break;
  2233.  
  2234.         case DASHED:
  2235.         /*
  2236.         @ keyword "dashed"
  2237.         @ next object will be drawn with a dashed line
  2238.         @ change dashing scheme by using command "dashtype int,int)
  2239.         */
  2240.             use_dashed = TRUE;
  2241.             break;
  2242.         case FILLED:
  2243.         /*
  2244.         @ keyword "filled"
  2245.         @ the next 'fillable' object (only) will be filled
  2246.         @ use command "fillcolor color" to set fillcolor
  2247.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  2248.         @ 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 !
  2249.         */
  2250.             use_filled = TRUE;
  2251.             break;
  2252.         case STYLE:
  2253.         /*
  2254.          @highlight color,opacity,linewidth
  2255.          @ NOT IMPLEMENTED
  2256.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  2257.         */
  2258.             break;
  2259.         case FILLCOLOR:
  2260.         /*
  2261.         @ fillcolor colorname or #hex
  2262.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  2263.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  2264.         */
  2265.             fill_color = get_color(infile,1);
  2266.             break;
  2267.         case STROKECOLOR:
  2268.         /*
  2269.         @ strokecolor colorname or #hex
  2270.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  2271.         */
  2272.             stroke_color = get_color(infile,1);
  2273.             break;
  2274.         case BGIMAGE:
  2275.         /*
  2276.          @bgimage image_location
  2277.          @use an image as background .<br />(we use the background of 'canvas_div' )
  2278.          @the background image will be resized to match "width = xsize" and "height = ysize"
  2279.         */
  2280.         URL = get_string(infile,1);
  2281.         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);
  2282.             break;
  2283.         case BGCOLOR:
  2284.         /*
  2285.          @bgcolor colorname or #hex
  2286.          @use this color as background of the "div" containing the canvas(es)
  2287.         */
  2288.         /* [255,255,255]*/
  2289.             bgcolor = get_string(infile,1);
  2290.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  2291.                 int found = 0;
  2292.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  2293.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  2294.                         bgcolor = colors[i].hex;
  2295.                         found = 1;
  2296.                         break;
  2297.                     }
  2298.                 }
  2299.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  2300.             }
  2301.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  2302.             break;
  2303.         case COPY:
  2304.         /*
  2305.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  2306.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  2307.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  2308.         @ [filename] is the URL of the image
  2309.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2310.         @ 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
  2311.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2312.  
  2313.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2314.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  2315.         */
  2316.             for(i = 0 ; i<7;i++){
  2317.                 switch(i){
  2318.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  2319.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  2320.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  2321.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  2322.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  2323.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  2324.                     case 6: URL = get_string(infile,1);
  2325.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  2326.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  2327.                             if( drag_type > -1 ){
  2328.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2329.                                 if(reply_format == 0 ){reply_format = 20;}
  2330.                                 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);
  2331.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2332.                                 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);
  2333.                                 drag_type = -1;
  2334.                                 ext_img_cnt++;
  2335.                             }
  2336.                             else
  2337.                             {
  2338.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2339.                                 /*
  2340.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  2341.                                 */
  2342.                                 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]);
  2343.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2344.                                 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]);
  2345.                             }
  2346.                             add_to_buffer(tmp_buffer);
  2347.                             break;
  2348.                     default: break;
  2349.                 }
  2350.             }
  2351.             reset();
  2352.             break;
  2353. /*
  2354. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2355. img     Specifies the image, canvas, or video element to use
  2356. sx      The x coordinate where to start clipping : x1 = int_data[0]
  2357. sy      The y coordinate where to start clipping : x2 = int_data[1]
  2358. swidth  The width of the clipped image : int_data[2] - int_data[0]
  2359. sheight The height of the clipped image : int_data[3] - int_data[1]
  2360. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  2361. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  2362. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  2363. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  2364. */
  2365.         case COPYRESIZED:
  2366.         /*
  2367.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  2368.         @ 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
  2369.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  2370.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2371.         @ 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
  2372.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2373.         */
  2374.             for(i = 0 ; i<9;i++){
  2375.                 switch(i){
  2376.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  2377.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  2378.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  2379.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  2380.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  2381.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  2382.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  2383.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  2384.                     case 8: URL = get_string(infile,1);
  2385.                             if( drag_type > -1 ){
  2386.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2387.                                 if(reply_format == 0 ){reply_format = 20;}
  2388.                                 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);
  2389.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2390.                                 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);
  2391.                                 drag_type = -1;
  2392.                                 ext_img_cnt++;
  2393.                             }
  2394.                             else
  2395.                             {
  2396.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2397.                                 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]);
  2398.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2399.                                 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]);
  2400.                             }
  2401.                             add_to_buffer(tmp_buffer);
  2402.                     default: break;
  2403.                 }
  2404.             }
  2405.             reset();
  2406.             break;
  2407.         case CLEARBUTTON:
  2408.         /*
  2409.          @clearbutton value
  2410.          @adds a button to clear the userdraw canvas with text 'value'
  2411.          @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
  2412.          @uses the tooltip placeholder div element: may not be used with command 'intooltip'
  2413.          @use command 'inputstyle' to style the button...
  2414.         */
  2415.             add_clear_button(js_include_file,canvas_root_id,input_style,get_string(infile,1));
  2416.         break;
  2417.         case INPUTSTYLE:
  2418.         /*
  2419.         @ inputstyle style_description
  2420.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  2421.         */
  2422.             input_style = get_string(infile,1);
  2423.             break;
  2424.         case INPUT:
  2425.         /*
  2426.          @ input x,y,size,editable,value
  2427.          @ to set inputfield "readonly", use editable = 0
  2428.          @ only active inputfields (editable = 1) will be read with read_canvas();
  2429.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2430.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  2431.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2432.         */
  2433.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  2434.             for(i = 0 ; i<5;i++){
  2435.                 switch(i){
  2436.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  2437.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  2438.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  2439.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2440.                     case 4:
  2441.                             temp = get_string_argument(infile,1);
  2442.                             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);
  2443.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2444.                             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);
  2445.                             add_to_buffer(tmp_buffer);
  2446.                             input_cnt++;break;
  2447.                     default: break;
  2448.                 }
  2449.             }
  2450.             if(reply_format == 0 ){reply_format = 15;}
  2451.             reset();
  2452.             break;
  2453.         case TEXTAREA:
  2454.         /*
  2455.          @ textarea x,y,cols,rows,readonly,value
  2456.          @ may be further controlled by "inputstyle"
  2457.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2458.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2459.         */
  2460.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}
  2461.             for(i = 0 ; i<6;i++){
  2462.                 switch(i){
  2463.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  2464.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  2465.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  2466.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  2467.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2468.                     case 5: temp = get_string_argument(infile,1);
  2469.                             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);
  2470.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2471.                             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);
  2472.                             add_to_buffer(tmp_buffer);
  2473.                             input_cnt++;break;
  2474.                     default: break;
  2475.                 }
  2476.             }
  2477.             if(reply_format == 0 ){reply_format = 15;}
  2478.             reset();
  2479.             break;
  2480.         case MOUSE_PRECISION:
  2481.         /*
  2482.             @ precision int
  2483.             @ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
  2484.             @ may be used / changed before every object
  2485.             @ In case of user interaction (like 'userdraw') this value will be used to determine the amount of decimals in the reply / answer
  2486.         */
  2487.             precision = (int) (get_real(infile,1));
  2488.             if(precision < 1 ){precision = 1;};
  2489.             break;
  2490.         case SETLIMITS:
  2491.         /*
  2492.             @setlimits
  2493.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  2494.             @may be used for inputfield based zooming / panning
  2495.             @use command xlabel / ylabel to change text from xmin to 'xlabel'min etc
  2496.             @note:the input value will not be checked on validity
  2497.         */
  2498.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2499.             add_setlimits(js_include_file,canvas_root_id);
  2500.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  2501.             use_pan_and_zoom = TRUE;
  2502.             done = TRUE;
  2503.             break;
  2504.         case ZOOM:
  2505.         /*
  2506.          @ zoom button_color
  2507.          @ introduce a controlpanel at the lower right corner
  2508.          @ 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
  2509.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  2510.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  2511.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  2512.          @ NOTE: use command 'zoom' at the end of your script code (the same is true for commanmd 'mouse')
  2513.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2514.          @ 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 !!
  2515.         */
  2516.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2517.             use_pan_and_zoom = TRUE;
  2518.             stroke_color = get_color(infile,1);
  2519.             /* we use BG_CANVAS (0) */
  2520.             add_zoom_buttons(js_include_file,canvas_root_id,stroke_color,stroke_opacity);
  2521.             done = TRUE;
  2522.             break;
  2523.         case ONCLICK:
  2524.         /*
  2525.          @ onclick
  2526.          @ keyword, no arguments
  2527.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2528.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2529.          @ NOTE: not all objects may be set clickable
  2530.         */
  2531.             fprintf(js_include_file,"use_dragdrop_reply = true;");
  2532.             onclick = 1;
  2533.             break;
  2534.         case DRAG:
  2535.         /*
  2536.          @ drag [x][y][xy]
  2537.          @ the next object will be draggable in x / y / xy direction
  2538.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2539.          @ 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' !
  2540.          @ 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)
  2541.          @ use keywordd 'snaptogrid' , 'xsnaptogrid' or 'ysnaptogrid' to switch from free to discrete movement
  2542.          @ 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.
  2543.          @ 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 !!
  2544.         */
  2545.             temp = get_string(infile,1);
  2546.             if(strstr(temp,"xy") != NULL ){
  2547.                 drag_type = 0;
  2548.             }
  2549.             else
  2550.             {
  2551.                 if(strstr(temp,"x") != NULL ){
  2552.                     drag_type = 1;
  2553.                 }
  2554.                 else
  2555.                 {
  2556.                     drag_type = 2;
  2557.                 }
  2558.             }
  2559.             fprintf(js_include_file,"dragdrop_precision = %d;use_dragdrop_reply = true;",precision);
  2560.             onclick = 2;
  2561.        
  2562.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2563.             break;
  2564.         case BLINK:
  2565.         /*
  2566.          @ blink time(seconds)
  2567.          @ NOT IMPLEMETED -YET
  2568.         */
  2569.             break;
  2570.         case XUNIT:
  2571.         /*
  2572.          @ xunit some_unit_for_x-values
  2573.          @ unicode allowed (no html code)
  2574.          @ use together with command mousex
  2575.          @ will display the cursor x-coordinate 'unit'
  2576.         */
  2577.             fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
  2578.             break;
  2579.         case YUNIT:
  2580.         /*
  2581.          @ yunit some_unit_for_y-values
  2582.          @ unicode allowed (no html code)
  2583.          @ use together with command mousex
  2584.          @ will display the cursor y-coordinate 'unit'
  2585.         */
  2586.             fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
  2587.             break;
  2588.         case MOUSE_DISPLAY:
  2589.         /*
  2590.          @display x|y|xy|degree|radius,color,fontsize
  2591.          @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)
  2592.          @use commands 'xunit' and / or 'yunit' to add the units to the mouse values
  2593.          @just like commands 'mouse','mousex','mousey','mouse_degree'...only other name)
  2594.         */
  2595.         temp = get_string_argument(infile,0);
  2596.         if( strstr(temp,"xy") != NULL ){
  2597.             int_data[0] = 2;
  2598.         }else{
  2599.             if( strstr(temp,"y") != NULL ){
  2600.                 int_data[0] = 1;
  2601.             }else{
  2602.                 if( strstr(temp,"x") != NULL ){
  2603.                     int_data[0] = 0;
  2604.                 }else{
  2605.                     if(strstr(temp,"degree") != NULL){
  2606.                         int_data[0] = 3;
  2607.                     }else{
  2608.                         if(strstr(temp,"radius") != NULL){
  2609.                             int_data[0] = 4;
  2610.                         }else{
  2611.                             int_data[0] = 2;
  2612.                         }
  2613.                     }
  2614.                 }
  2615.             }
  2616.         }
  2617.         stroke_color = get_color(infile,0);
  2618.         font_size = (int) (get_real(infile,1));
  2619.         tmp_buffer = my_newmem(26);
  2620.         snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2621.         add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,int_data[0]);
  2622.         break;
  2623.         case MOUSE_DEGREE:
  2624.         /*
  2625.          @ mouse_degree color,fontsize
  2626.          @ 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
  2627.          @ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
  2628.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2629.  
  2630.         */
  2631.             stroke_color = get_color(infile,0);
  2632.             font_size = (int) (get_real(infile,1));
  2633.             tmp_buffer = my_newmem(26);
  2634.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2635.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,3);
  2636.             break;
  2637.         case MOUSEX:
  2638.         /*
  2639.          @ mousex color,fontsize
  2640.          @ will display the cursor x-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2641.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2642.  
  2643.         */
  2644.             stroke_color = get_color(infile,0);
  2645.             font_size = (int) (get_real(infile,1));
  2646.             tmp_buffer = my_newmem(26);
  2647.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2648.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,0);
  2649.             break;
  2650.         case MOUSEY:
  2651.         /*
  2652.          @ mousey color,fontsize
  2653.          @ will display the cursor y-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2654.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2655.  
  2656.         */
  2657.             stroke_color = get_color(infile,0);
  2658.             font_size = (int) (get_real(infile,1));
  2659.             tmp_buffer = my_newmem(26);
  2660.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2661.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,1);
  2662.             break;
  2663.         case MOUSE:
  2664.         /*
  2665.          @ mouse color,fontsize
  2666.          @ will display the cursor (x:y) coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2667.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for commanmd 'zoom')
  2668.  
  2669.         */
  2670.             stroke_color = get_color(infile,0);
  2671.             font_size = (int) (get_real(infile,1));
  2672.             tmp_buffer = my_newmem(26);
  2673.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2674.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,2);
  2675.             break;
  2676.         case INTOOLTIP:
  2677.             /*
  2678.             @ intooltip link_text
  2679.             @ link_text is a single line (span-element)
  2680.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2681.             @ link_text may contain HTML markup
  2682.             @ the canvas will be displayed in a tooltip on 'link_text'
  2683.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2684.             */
  2685.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2686.             use_tooltip = TRUE;
  2687.             tooltip_text = get_string(infile,1);
  2688.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2689.             break;
  2690.         case AUDIO:
  2691.         /*
  2692.         @ audio x,y,w,h,loop,visible,audiofile location
  2693.         @ x,y : left top corner of audio element (in xrange / yrange)
  2694.         @ w,y : width and height in pixels
  2695.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2696.         @ visible : 0 or 1 (1 = show controls)
  2697.         @ audio format may be in *.mp3 or *.ogg
  2698.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2699.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2700.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2701.         @ 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 />
  2702.         */
  2703.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2704.             for(i=0;i<7;i++){
  2705.                 switch(i){
  2706.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2707.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2708.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2709.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2710.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2711.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2712.                     case 6:
  2713.                     temp = get_string(infile,1);
  2714.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2715.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2716.                     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);
  2717.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2718.                     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);
  2719.                     add_to_buffer(tmp_buffer);
  2720.                     break;
  2721.                     default:break;
  2722.                 }
  2723.             }
  2724.             reset();
  2725.             break;
  2726.         case VIDEO:
  2727.         /*
  2728.         @ video x,y,w,h,videofile location
  2729.         @ x,y : left top corner of audio element (in xrange / yrange)
  2730.         @ w,y : width and height in pixels
  2731.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2732.         @ video format may be in *.mp4 (todo:other formats)
  2733.         */
  2734.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2735.             for(i=0;i<5;i++){
  2736.                 switch(i){
  2737.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2738.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2739.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2740.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2741.                     case 4: temp = get_string(infile,1);
  2742.                             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);
  2743.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2744.                             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);
  2745.                             add_to_buffer(tmp_buffer);
  2746.                             break;
  2747.                     default:break;
  2748.                 }
  2749.             }
  2750.             reset();
  2751.             break;
  2752.         case HATCHFILL:
  2753.         /*
  2754.         @ hatchfill x0,y0,dx,dy,color
  2755.         @ x0,y0 in xrange / yrange
  2756.         @ distances dx,dy in pixels
  2757.         */
  2758.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2759.             for(i=0;i<5;i++){
  2760.                 switch(i){
  2761.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2762.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2763.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2764.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2765.                     case 4: stroke_color = get_color(infile,1);
  2766.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2767.                     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);
  2768.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2769.                     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);
  2770.                     add_to_buffer(tmp_buffer);
  2771.                     break;
  2772.                     default:break;
  2773.                 }
  2774.             }
  2775.             reset();
  2776.         break;
  2777.         case DIAMONDFILL:
  2778.         /*
  2779.         @ diamondfill x0,y0,dx,dy,color
  2780.         @ x0,y0 in xrange / yrange
  2781.         @ distances dx,dy in pixels
  2782.         */
  2783.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2784.             for(i=0;i<5;i++){
  2785.                 switch(i){
  2786.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2787.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2788.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2789.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2790.                     case 4: stroke_color = get_color(infile,1);
  2791.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2792.                     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);
  2793.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2794.                     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);
  2795.                     add_to_buffer(tmp_buffer);
  2796.                     break;
  2797.                     default:break;
  2798.                 }
  2799.             }
  2800.             reset();
  2801.         break;
  2802.         case GRIDFILL:
  2803.         /*
  2804.         @ gridfill x0,y0,dx,dy,color
  2805.         @ x0,y0 in xrange / yrange
  2806.         @ distances dx,dy in pixels
  2807.         @ a draggable object may snap_to_grid (using keywords xysnaptogrid,xsnaprogrid, ysnaptogrid)
  2808.         @ userdraw object may snap_to_grid
  2809.         */
  2810.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2811.             for(i=0;i<5;i++){
  2812.                 switch(i){
  2813.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2814.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2815.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2816.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2817.                     case 4: stroke_color = get_color(infile,1);
  2818.                     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);
  2819.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2820.                     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);
  2821.                     add_to_buffer(tmp_buffer);
  2822.                     break;
  2823.                     default:break;
  2824.                 }
  2825.             }
  2826.             reset();
  2827.         break;
  2828.         case DOTFILL:
  2829.         /*
  2830.         @ dotfill x0,y0,dx,dy,color
  2831.         @ x0,y0 in xrange / yrange
  2832.         @ distances dx,dy in pixels
  2833.         @ radius of dots is linewidth
  2834.         */
  2835.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2836.             for(i=0;i<5;i++){
  2837.                 switch(i){
  2838.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2839.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2840.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2841.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2842.                     case 4: stroke_color = get_color(infile,1);
  2843.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2844.                     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);
  2845.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2846.                     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);
  2847.                     add_to_buffer(tmp_buffer);
  2848.                     break;
  2849.                     default:break;
  2850.                 }
  2851.             }
  2852.             reset();
  2853.         break;
  2854.         case IMAGEFILL:
  2855.         /*
  2856.         @ imagefill dx,dy,image_url
  2857.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2858.         @ After pattern filling ,the fill-color should be reset !
  2859.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2860.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2861.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2862.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2863.         */
  2864.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2865.             for(i=0 ;i < 3 ; i++){
  2866.                 switch(i){
  2867.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2868.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2869.                     case 2: URL = get_string_argument(infile,1);
  2870.                             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);
  2871.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2872.                             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);
  2873.                             add_to_buffer(tmp_buffer);
  2874.                     break;
  2875.                 }
  2876.             }
  2877.             reset();
  2878.         break;
  2879.         case FILLTOBORDER:
  2880.         /*
  2881.         @ filltoborder x,y,bordercolor,color
  2882.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2883.         @ any other color will not act as border to the bucket fill
  2884.         @ use this command  after all boundary objects are declared.
  2885.         @ 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..
  2886.         */
  2887.             for(i=0 ;i < 4 ; i++){
  2888.                 switch(i){
  2889.                     case 0:double_data[0] = get_real(infile,0);break;
  2890.                     case 1:double_data[1] = get_real(infile,0);break;
  2891.                     case 2:bgcolor = get_color(infile,0);break;
  2892.                     case 3:fill_color = get_color(infile,1);
  2893.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2894.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2895.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2896.                            }
  2897.                            decimals = find_number_of_digits(precision);
  2898.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2899.                            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));
  2900.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2901.                            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));
  2902.                            add_to_buffer(tmp_buffer);
  2903.                            break;
  2904.                     default:break;
  2905.                 }
  2906.             }
  2907.             reset();
  2908.         break;
  2909.         case FLOODFILL:
  2910.         /*
  2911.         @ floodfill x,y,color
  2912.         @ alternative syntax: fill x,y,color
  2913.         @ fill the region of point (x:y) with color 'color'
  2914.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2915.         @ use this command  after all boundary objects are declared.
  2916.         @ Use command 'clickfill,color' for user click driven flood fill.
  2917.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2918.         @ 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..
  2919.         */
  2920.             for(i=0 ;i < 4 ; i++){
  2921.                 switch(i){
  2922.                     case 0:double_data[0] = get_real(infile,0);break;
  2923.                     case 1:double_data[1] = get_real(infile,0);break;
  2924.                     case 2:fill_color = get_color(infile,1);
  2925.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2926.                                 js_function[DRAW_FLOODFILL] = 1;
  2927.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2928.                            }
  2929.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2930.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2931.                            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));
  2932.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2933.                            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));
  2934.                            add_to_buffer(tmp_buffer);
  2935.                            break;
  2936.                     default:break;
  2937.                 }
  2938.             }
  2939.             reset();
  2940.         break;
  2941.         case CLICKFILLMARGE:
  2942.             clickfillmarge = (int) (get_real(infile,1));
  2943.             break;
  2944.         /*
  2945.         @ clickfillmarge int
  2946.         @ default 20 (pixels)
  2947.         @ 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[])
  2948.         */
  2949.         case CLICKFILL:
  2950.         /*
  2951.         @ clickfill fillcolor
  2952.         @ user left mouse click will floodfill the area with fillcolor
  2953.         @ multiple areas may be coloured
  2954.         @ 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)
  2955.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2956.         @ background color of main div may be set by using command "bgcolor color"
  2957.         @ may not be combined with command "userdraw"
  2958.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2959.         */
  2960.          fill_color = get_color(infile,1);
  2961.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2962.             js_function[DRAW_FLOODFILL] = 1;
  2963.             add_js_floodfill(js_include_file,canvas_root_id);
  2964.          }
  2965.          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));
  2966.          add_read_canvas(canvas_root_id,1,reply_precision);
  2967.          reset();
  2968.         break;
  2969.         case SETPIXEL:
  2970.         /*
  2971.         @ setpixel x,y,color
  2972.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  2973.         @ pixels can not be dragged or clicked
  2974.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2975.         */
  2976.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2977.             for(i=0;i<3;i++){
  2978.                 switch(i){
  2979.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  2980.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  2981.                     case 2: stroke_color = get_color(infile,1);
  2982.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2983.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2984.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2985.                            add_to_buffer(tmp_buffer);
  2986.                            break;
  2987.                     default:break;
  2988.                 }
  2989.             }
  2990.             reset();
  2991.         break;
  2992.         case PIXELSIZE:
  2993.         /*
  2994.         @ pixelsize int
  2995.         @ in case you want to deviate from default pixelsize = 1...
  2996.         */
  2997.             pixelsize = (int) get_real(infile,1);
  2998.         break;
  2999.         case PIXELS:
  3000.         /*
  3001.         @ pixels color,x1,y1,x2,y2,x3,y3...
  3002.         @ Draw  "points" with diameter 1 pixel
  3003.         @ pixels can not be dragged or clicked
  3004.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  3005.         */
  3006.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  3007.             stroke_color=get_color(infile,0);
  3008.             i=0;
  3009.             c=0;
  3010.             while( ! done ){     /* get next item until EOL*/
  3011.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  3012.                 for( c = 0 ; c < 2; c++){
  3013.                     if(c == 0 ){
  3014.                         double_data[i] = get_real(infile,0);
  3015.                         i++;
  3016.                     }
  3017.                     else
  3018.                     {
  3019.                         double_data[i] = get_real(infile,1);
  3020.                         i++;
  3021.                     }
  3022.                 }
  3023.             }
  3024.             decimals = find_number_of_digits(precision);
  3025.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  3026.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3027.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3028.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3029.             add_to_buffer(tmp_buffer);
  3030.             reset();
  3031.             break;
  3032.         case REPLYFORMAT:
  3033.         /*
  3034.         @ replyformat number
  3035.         @ use number=-1 to deactivate the js-functions read_canvas() and read_dragdrop()
  3036.         @ default values should be fine !
  3037.         @ use command 'precision [0,1,10,100,1000,10000...]' before command 'replyformat' to set the desired number of decimals in the student reply / drawing
  3038.         @ the last value for 'precision int' will be used to calculate  the reply coordinates, if needed (read_canvas();)
  3039.         @ 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>
  3040.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  3041.         */
  3042.          reply_format = (int) get_real(infile,1);
  3043.          reply_precision = precision;
  3044.         break;
  3045.         case LEGENDCOLORS:
  3046.         /*
  3047.         @ legendcolors color1:color2:color3:...:color_n
  3048.         @ 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 />
  3049.         @ make sure the number of colours match the number of legend items
  3050.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  3051.         */
  3052.             if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
  3053.             temp = get_string(infile,1);
  3054.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3055.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
  3056.             break;
  3057.         case LEGEND:
  3058.         /*
  3059.         @ legend string1:string2:string3....string_n
  3060.         @ will be used to create a legend for a graph
  3061.         @ also see command 'piechart'
  3062.         @ will use the same colors per default as used in the graphs : use command 'legendcolors' to override the default
  3063.         */
  3064.             temp = get_string(infile,1);
  3065.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3066.             legend_cnt++; /* attention :starts with -1 : it will be used in piechart etc */
  3067.             fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
  3068.             break;
  3069.         case XLABEL:
  3070.         /*
  3071.         @ xlabel some_string
  3072.         @ will be used to create a label for the x-axis (label is in quadrant I)
  3073.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3074.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3075.         */
  3076.             temp = get_string(infile,1);
  3077.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  3078.             break;
  3079.         case YLABEL:
  3080.         /*
  3081.         @ ylabel some_string
  3082.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  3083.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3084.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3085.         */
  3086.             temp = get_string(infile,1);
  3087.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  3088.             break;
  3089.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  3090.         /*
  3091.         @ linegraph x1:y1;x2:y2...x_n:y_n
  3092.         @ will plot your data in a graph
  3093.         @ may only to be used together with command 'grid'
  3094.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3095.         @ use command 'legend' to provide an optional legend in right-top-corner
  3096.         @ also see command 'piechart'
  3097.         @ multiple linegraphs may be used in a single plot
  3098.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3099.         @ <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>
  3100.         */
  3101.             temp = get_string(infile,1);
  3102.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3103.             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);
  3104.             linegraph_cnt++;
  3105.             reset();
  3106.             break;
  3107.         case BARCHART:
  3108.         /*
  3109.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  3110.         @ will be used to create a legend for bar graph
  3111.         @ may only to be used together with command 'grid'
  3112.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3113.         @ use command 'legend' to provide an optional legend in right-top-corner
  3114.         @ also see command 'piechart'
  3115.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3116.         */
  3117.             temp = get_string(infile,1);
  3118.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  3119.             fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
  3120.             barchart_cnt++;
  3121.             reset();
  3122.             break;
  3123.         case CLOCK:
  3124.         /*
  3125.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  3126.         @ use command 'opacity stroke-opacity,fill-opacity' to adjust foreground (stroke) and background (fill) transparency
  3127.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  3128.         @ 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
  3129.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  3130.         @ 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>
  3131.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  3132.         @ no combinations with other reply_types allowed, for now
  3133.         @ 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
  3134.         @ 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
  3135.         */
  3136.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  3137.  
  3138.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  3139.             for(i=0;i<9;i++){
  3140.              switch(i){
  3141.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  3142.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  3143.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  3144.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  3145.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  3146.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  3147.               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 */
  3148.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  3149.                 switch(int_data[7]){
  3150.                     case 0:break;
  3151.                     case 1:if(clock_cnt == 0){
  3152.                                 if( reply_format == 0 ){
  3153.                                      reply_format = 18; /* user sets clock */
  3154.                                     /* 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");
  3155.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3156.                                      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");
  3157.                                      add_to_buffer(tmp_buffer);
  3158.                                     */
  3159.                                      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");
  3160.                                 }
  3161.                                 else
  3162.                                 {
  3163.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  3164.                                 }
  3165.                              }
  3166.                             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);
  3167.                     break;
  3168.                     case 2:if( reply_format == 0 ){
  3169.                                 reply_format = 19; /* "onclick */
  3170.                                 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 ");
  3171.                             }
  3172.                             else
  3173.                             {
  3174.                                 if( reply_format != 19){
  3175.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  3176.                                  }
  3177.                             }
  3178.                      break;
  3179.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  3180.                 }
  3181.                 break;
  3182.                 case 8:
  3183.                         if(clock_cnt == 0 ){ /* set opacity's just once .... it should be a argument to clock() , for now it's OK */
  3184.                             fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
  3185.                         }
  3186.                         temp = get_string(infile,1);
  3187.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  3188.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  3189.                         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);
  3190.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3191.                         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);
  3192.                         add_to_buffer(tmp_buffer);
  3193.                         clock_cnt++;
  3194.                         break;
  3195.                 default:break;
  3196.              }
  3197.             }
  3198.             break;
  3199.         case PIECHART:
  3200.         /*
  3201.         @ piechart xc,yc,radius,'data+colorlist'
  3202.         @ (xc : yc) center of circle diagram in xrange/yrange
  3203.         @ radius in pixels
  3204.         @ 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
  3205.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  3206.         @ the number of colors must match the number of data.
  3207.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  3208.         @ 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.
  3209.         */
  3210.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}
  3211.             for(i=0;i<5;i++){
  3212.                 switch(i){
  3213.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  3214.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  3215.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  3216.                     case 3: temp = get_string(infile,1);
  3217.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  3218.                             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);
  3219.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3220.                             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);
  3221.                             add_to_buffer(tmp_buffer);
  3222.                            break;
  3223.                     default:break;
  3224.                 }
  3225.             }
  3226.             reset();
  3227.         break;
  3228.         case STATUS:
  3229.         /*
  3230.         @status
  3231.         @keyword
  3232.         @alernative keyword: nostatus
  3233.         @used to override the effects of "status=done" in wims (answer.phtml)
  3234.         @affects inputfields / textarea's in canvasimage and all userdraw based commands
  3235.         @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'
  3236.         */
  3237.  
  3238.             fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
  3239.             break;
  3240.         case XLOGBASE:
  3241.         /*
  3242.         @ xlogbase number
  3243.         @ sets the logbase number for the x-axis
  3244.         @ default value 10
  3245.         @ use together with commands xlogscale / xylogscale
  3246.         */
  3247.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  3248.             break;
  3249.         case YLOGBASE:
  3250.         /*
  3251.         @ ylogbase number
  3252.         @ sets the logbase number for the y-axis
  3253.         @ default value 10
  3254.         @ use together with commands ylogscale / xylogscale
  3255.         */
  3256.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  3257.             break;
  3258.         case XLOGSCALE:
  3259.         /*
  3260.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  3261.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3262.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  3263.          @ the linewidth is set using command 'linewidth int'
  3264.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3265.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  3266.          @ 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>
  3267.          @ note: the complete canvas will be used for the 'log paper'
  3268.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3269.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3270.          @ 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')
  3271.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3272.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3273.         */
  3274.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3275.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  3276.             for(i=0;i<4;i++){
  3277.                 switch(i){
  3278.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3279.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3280.                     case 2: stroke_color = get_color(infile,0); break;
  3281.                     case 3: fill_color = get_color(infile,1);
  3282.                         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);
  3283.                         tmp_buffer = my_newmem(string_length+1);
  3284.                         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);
  3285.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  3286.                         add_to_buffer(tmp_buffer);
  3287.                         break;
  3288.                     default:break;
  3289.                 }
  3290.             }
  3291.             break;
  3292.         case YLOGSCALE:
  3293.         /*
  3294.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  3295.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3296.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  3297.          @ the linewidth is set using command 'linewidth int'
  3298.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3299.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  3300.          @ 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>
  3301.          @ note: the complete canvas will be used for the 'log paper'
  3302.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3303.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3304.          @ 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')
  3305.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3306.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3307.         */
  3308.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3309.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  3310.             for(i=0;i<4;i++){
  3311.                 switch(i){
  3312.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3313.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3314.                     case 2: stroke_color = get_color(infile,0); break;
  3315.                     case 3: fill_color = get_color(infile,1);
  3316.                         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);
  3317.                         tmp_buffer = my_newmem(string_length+1);
  3318.                         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);
  3319.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  3320.                         add_to_buffer(tmp_buffer);
  3321.                         break;
  3322.                     default:break;
  3323.                 }
  3324.             }
  3325.             break;
  3326.         case XYLOGSCALE:
  3327.         /*
  3328.          @ xylogscale majorcolor,minorcolor
  3329.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3330.          @ the linewidth is set using command 'linewidth int'
  3331.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3332.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  3333.          @ 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>
  3334.          @ note: the complete canvas will be used for the 'log paper'
  3335.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3336.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3337.          @ 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')
  3338.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3339.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3340.         */
  3341.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3342.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  3343.             for(i=0;i<2;i++){
  3344.                 switch(i){
  3345.                     case 0: stroke_color = get_color(infile,0); break;
  3346.                     case 1: fill_color = get_color(infile,1);
  3347.                         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);
  3348.                         tmp_buffer = my_newmem(string_length+1);
  3349.                         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);
  3350.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  3351.                         add_to_buffer(tmp_buffer);
  3352.                         break;
  3353.                     default:break;
  3354.                 }
  3355.             }
  3356.         break;
  3357.         default:sync_input(infile);
  3358.         break;
  3359.     }
  3360.   }
  3361.   /* we are done parsing script file */
  3362.   /* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize : Quadrant I */
  3363.   if( found_size_command == 1 ){
  3364.     fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
  3365.   }
  3366.   else
  3367.   {
  3368.     if( found_size_command != 3 ){
  3369.      canvas_error("Please specify both xrange and yrange ...");
  3370.     }
  3371.   }
  3372.  
  3373.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable/clickable shapes / objects  ! */
  3374.   add_javascript_functions(js_function,canvas_root_id);
  3375.    /* add read_canvas() etc functions if needed */
  3376.   if( reply_format > 0 ){ add_read_canvas(canvas_root_id,reply_format,reply_precision);}
  3377.   if( use_pan_and_zoom == TRUE ){
  3378.   /* in case of zooming ... */
  3379.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  3380.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  3381.  var ymin_start=ymin;var ymax_start=xmax;\
  3382.  var zoom_x_increment=0;var zoom_y_increment=0;\
  3383.  var pan_x_increment=0;var pan_y_increment=0;\
  3384.  if(use_ylogscale == 0 ){\
  3385.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (ymax - ymin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  3386.  }else{\
  3387.   zoom_x_increment = (xmax - xmin)/20;\
  3388.   pan_x_increment = (xmax - xmin)/20;\
  3389.  };\
  3390.  function start_canvas%d(type){\
  3391.   switch(type){\
  3392.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  3393.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  3394.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  3395.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  3396.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  3397.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  3398.    case 6:location.reload();break;\
  3399.    default:break;\
  3400.   };\
  3401.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  3402.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  3403.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  3404.   %s\
  3405.  };\
  3406.  start_canvas%d(333);\
  3407. };\n\
  3408. <!-- end wims_canvas_function -->\n\
  3409. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  3410.   }
  3411.   else
  3412.   {
  3413.   /* no zoom, just add buffer */
  3414.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  3415.  %s\
  3416. };\n\
  3417. <!-- end wims_canvas_function -->\n\
  3418. wims_canvas_function%d();\n",buffer,canvas_root_id);
  3419.   }
  3420. /* done writing the javascript include file */
  3421. fclose(js_include_file);
  3422.  
  3423. }
  3424.  
  3425. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  3426. if(use_tooltip == TRUE){
  3427.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  3428. }
  3429. exit(EXIT_SUCCESS);
  3430. }
  3431. /* end main() */
  3432.  
  3433. /******************************************************************************
  3434. **
  3435. **  sync_input
  3436. **
  3437. **  synchronises input line - reads to end of line, leaving file pointer
  3438. **  at first character of next line.
  3439. **
  3440. **  Used by:
  3441. **  main program - error handling.
  3442. **
  3443. ******************************************************************************/
  3444. void sync_input(FILE *infile)
  3445. {
  3446.         int c = 0;
  3447.  
  3448.         if( c == '\n' || c == ';' ) return;
  3449.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  3450.         if( c == EOF ) finished = 1;
  3451.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  3452.         return;
  3453. }
  3454.  
  3455. /******************************************************************************/
  3456.  
  3457. char *str_replace(const char *str, const char *old, const char *new){
  3458. /* http://creativeandcritical.net/str-replace-c/ */
  3459.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  3460.     char *ret, *r;
  3461.     const char *p, *q;
  3462.     size_t oldlen = strlen(old);
  3463.     size_t count = 0;
  3464.     size_t retlen = 0;
  3465.     size_t newlen = strlen(new);
  3466.     if (oldlen != newlen){
  3467.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  3468.             count++;
  3469.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  3470.         }
  3471.     }
  3472.     else
  3473.     {
  3474.         retlen = strlen(str);
  3475.     }
  3476.  
  3477.     if ((ret = malloc(retlen + 1)) == NULL){
  3478.         ret = NULL;
  3479.         canvas_error("string argument is NULL");
  3480.     }
  3481.     else
  3482.     {
  3483.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  3484.             size_t l = q - p;
  3485.             memcpy(r, p, l);
  3486.             r += l;
  3487.             memcpy(r, new, newlen);
  3488.             r += newlen;
  3489.         }
  3490.         strcpy(r, p);
  3491.     }
  3492.     return ret;
  3493. }
  3494.  
  3495. /******************************************************************************/
  3496.  
  3497. char *get_color(FILE *infile , int last){
  3498.     int c,i = 0,is_hex = 0;
  3499.     char temp[MAX_COLOR_STRING], *string;
  3500.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  3501.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  3502.         if( c == '#' ){
  3503.             is_hex = 1;
  3504.         }
  3505.         if( c != ' '){
  3506.             temp[i]=tolower(c);
  3507.             i++;
  3508.         }
  3509.     }
  3510.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3511.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3512.     if( c == EOF ){finished = 1;}
  3513.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3514.     temp[i]='\0';
  3515.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  3516.     if( is_hex == 1 ){
  3517.         char red[3], green[3], blue[3];
  3518.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  3519.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  3520.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  3521.         int r = (int) strtol(red,   NULL, 16);
  3522.         int g = (int) strtol(green, NULL, 16);
  3523.         int b = (int) strtol(blue,  NULL, 16);
  3524.         string = (char *)my_newmem(12);
  3525.         snprintf(string,11,"%d,%d,%d",r,g,b);
  3526.         return string;
  3527.     }
  3528.     else
  3529.     {
  3530.         string = (char *)my_newmem(sizeof(temp));
  3531.         snprintf(string,sizeof(temp),"%s",temp);
  3532.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  3533.             if( strcmp( colors[i].name , string ) == 0 ){
  3534.                 return colors[i].rgb;
  3535.             }
  3536.         }
  3537.     }
  3538.     /* not found...return error */
  3539.     free(string);string = NULL;
  3540.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  3541.     return NULL;
  3542. }
  3543.  
  3544. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  3545.     int c,i=0;
  3546.     char  temp[MAX_BUFFER], *string;
  3547.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  3548.         temp[i]=c;
  3549.         i++;
  3550.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  3551.     }
  3552.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  3553.     if( c == '\n') { done = TRUE; line_number++; }
  3554.     if( c == EOF ) {
  3555.         finished = 1;
  3556.         if( last != 1 ){ canvas_error("expected more arguments");}
  3557.     }
  3558.     temp[i]='\0';
  3559.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  3560.     string=(char *)my_newmem(strlen(temp));
  3561.     snprintf(string,sizeof(temp),"%s",temp);
  3562.     return string;
  3563. }
  3564.  
  3565. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  3566.     int c,i=0;
  3567.     char temp[MAX_BUFFER], *string;
  3568.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  3569.         temp[i]=c;
  3570.         i++;
  3571.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  3572.     }
  3573.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  3574.     if( c == '\n') { line_number++; }
  3575.     if( c == EOF ) {finished = 1;}
  3576.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3577.     temp[i]='\0';
  3578.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  3579.     string=(char *)my_newmem(sizeof(temp));
  3580.     snprintf(string,sizeof(temp),"%s",temp);
  3581.     done = TRUE;
  3582.     return string;
  3583. }
  3584.  
  3585. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  3586.     int c,i=0,found_calc = 0;
  3587.     double y;
  3588.     char tmp[MAX_INT];
  3589.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  3590.      if( c != ' ' ){
  3591.      /*
  3592.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  3593.      We will check after assert() if it's a NULL pointer...and exit program via :
  3594.      canvas_error("I'm having trouble parsing your \"expression\" ");
  3595.      */
  3596.       if( i == 0 &&  c == '+' ){
  3597.        continue;
  3598.       }
  3599.       else
  3600.       {
  3601.        if(canvas_iscalculation(c) != 0){
  3602.         found_calc = 1;
  3603.         c = tolower(c);
  3604.        }
  3605.        tmp[i] = c;
  3606.        i++;
  3607.       }
  3608.      }
  3609.      if( i > MAX_INT - 1){canvas_error("number too large");}
  3610.     }
  3611.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3612.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3613.     if( c == EOF ){done = TRUE ; finished = 1;}
  3614.     tmp[i]='\0';
  3615.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  3616.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  3617.      void *f = eval_create(tmp);
  3618.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  3619.      y = eval_x(f, 1);
  3620.      /* if function is bogus; y = 1 : so no core dumps */
  3621.      eval_destroy(f);
  3622.     }
  3623.     else
  3624.     {
  3625.      y = atof(tmp);
  3626.     }
  3627.     return y;
  3628. }
  3629. void canvas_error(char *msg){
  3630.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  3631.     finished = 1;
  3632.     exit(EXIT_SUCCESS);
  3633. }
  3634.  
  3635.  
  3636. /* convert x/y coordinates to pixel */
  3637. int x2px(double x){
  3638.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3639. }
  3640.  
  3641. int y2px(double y){
  3642.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3643. }
  3644.  
  3645. double px2x(int x){
  3646.  return (x*(xmax - xmin)/xsize + xmin);
  3647. }
  3648. double px2y(int y){
  3649.  return (y*(ymax - ymin)/ysize + ymin);
  3650. }
  3651.  
  3652. void add_to_buffer(char *tmp){
  3653.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3654.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3655.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3656.  if( space_left > strlen(tmp)){
  3657.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3658.  }
  3659.  else
  3660.  {
  3661.   canvas_error("buffer is too big\n");
  3662.  }
  3663.  tmp = NULL;free(tmp);
  3664.  return;
  3665. }
  3666.  
  3667. void reset(){
  3668.  if(use_filled == TRUE){use_filled = FALSE;}
  3669.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3670.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3671.    onclick = 0;
  3672. }
  3673.  
  3674.  
  3675.  
  3676. /* What reply format in read_canvas();
  3677.  
  3678. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3679. 1 = x1,x2,x3,x4....x_n
  3680.     y1,y2,y3,y4....y_n
  3681.  
  3682.     x/y in pixels
  3683.  
  3684. 2 = x1,x2,x3,x4....x_n
  3685.     y1,y2,y3,y4....y_n
  3686.     x/y in  xrange / yrange coordinate system
  3687.  
  3688. 3 = x1,x2,x3,x4....x_n
  3689.     y1,y2,y3,y4....y_n
  3690.     r1,r2,r3,r4....r_n
  3691.  
  3692.     x/y in pixels
  3693.     r in pixels
  3694.  
  3695. 4 = x1,x2,x3,x4....x_n
  3696.     y1,y2,y3,y4....y_n
  3697.     r1,r2,r3,r4....r_n
  3698.  
  3699.     x/y in  xrange / yrange coordinate system
  3700.     r in pixels
  3701.  
  3702. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3703.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3704.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3705.     By1,By2,By3,By4....By_n
  3706.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3707.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3708.     ....
  3709.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3710.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3711.  
  3712.     x/y in pixels
  3713.  
  3714. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3715.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3716.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3717.     By1,By2,By3,By4....By_n
  3718.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3719.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3720.     ....
  3721.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3722.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3723.  
  3724.     x/y in  xrange / yrange coordinate system
  3725.  
  3726. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3727.  
  3728.     x/y in pixels
  3729.  
  3730. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3731.  
  3732.     x/y in  xrange / yrange coordinate system
  3733.  
  3734. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3735.  
  3736.     x/y in pixels
  3737.  
  3738. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3739.  
  3740.     x/y in  xrange / yrange coordinate system
  3741.  
  3742. 11 = Ax1,Ay1,Ax2,Ay2
  3743.      Bx1,By1,Bx2,By2
  3744.      Cx1,Cy1,Cx2,Cy2
  3745.      Dx1,Dy1,Dx2,Dy2
  3746.      ......
  3747.      Zx1,Zy1,Zx2,Zy2
  3748.  
  3749.     x/y in  xrange / yrange coordinate system
  3750.  
  3751. 12 = Ax1,Ay1,Ax2,Ay2
  3752.      Bx1,By1,Bx2,By2
  3753.      Cx1,Cy1,Cx2,Cy2
  3754.      Dx1,Dy1,Dx2,Dy2
  3755.      ......
  3756.      Zx1,Zy1,Zx2,Zy2
  3757.  
  3758.     x/y in pixels
  3759.  
  3760. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3761.  
  3762.     x/y in  xrange / yrange coordinate system
  3763. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3764.     x/y in pixels
  3765. 15 = reply from inputfields,textareas
  3766.     reply1,reply2,reply3,...,reply_n
  3767.     only fields set write (a.g. will not read 'readonly' inputfield values'
  3768.  
  3769. 16 = read mathml inputfields only
  3770.  
  3771. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3772.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3773.  
  3774. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3775. 19 = return clicked object number (analogue to shape-library onclick)
  3776. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3777. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3778. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3779.     x/y in  xrange / yrange coordinate system
  3780. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3781. 24 = read all inputfield values: even those set 'readonly'
  3782. 25 = return all userdrawn arcs in degrees:
  3783. 26 = return all userdrawn arcs in radians:
  3784. 27 = return (only) userdraw inputfields array: x1:y1:text1,x2:y2:text2...
  3785. */
  3786.  
  3787.  
  3788. void add_read_canvas(int canvas_root_id,int type_reply,int reply_precision){
  3789. /* just 1 reply type allowed */
  3790. fprintf(js_include_file,"\
  3791. \n<!-- begin set_reply_precision() -->\n\
  3792. function set_reply_precision(){\
  3793. var len = userdraw_x.length;\
  3794. var prec = %d;\
  3795. for(var p = 0 ; p < len ; p++ ){\
  3796.  userdraw_x[p] = (Math.round(prec*userdraw_x[p]))/prec;\
  3797.  userdraw_y[p] = (Math.round(prec*userdraw_y[p]))/prec;\
  3798. };\
  3799. len = userdraw_radius.length;\
  3800. if( len > 0 ){\
  3801.  for(var p = 0 ; p < len ; p++ ){\
  3802.   userdraw_radius[p] = (Math.round(prec*userdraw_radius[p]))/prec;\
  3803.  };\
  3804. };\
  3805. };",reply_precision);
  3806.  
  3807. switch(type_reply){
  3808. /*
  3809. answers may have:
  3810. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3811. */
  3812.     case 1: fprintf(js_include_file,"\
  3813. \n<!-- begin function 1 read_canvas%d() -->\n\
  3814. read_canvas%d = function(){\
  3815. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3816. set_reply_precision();\
  3817. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3818.  var p = 0;var input_reply = new Array();\
  3819.  if( document.getElementById(\"canvas_input0\")){\
  3820.   var t = 0;\
  3821.   while(document.getElementById(\"canvas_input\"+t)){\
  3822.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3823.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3824.     p++;\
  3825.    };\
  3826.    t++;\
  3827.   };\
  3828.  };\
  3829.  if( typeof userdraw_text != 'undefined' ){\
  3830.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3831.  }\
  3832.  else\
  3833.  {\
  3834.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3835.  }\
  3836. }\
  3837. else\
  3838. {\
  3839.  if( typeof userdraw_text != 'undefined' ){\
  3840.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3841.  }\
  3842.  else\
  3843.  {\
  3844.   return userdraw_x+\"\\n\"+userdraw_y;\
  3845.  }\
  3846. };\
  3847. };\n\
  3848. <!-- end function 1 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  3849.     break;
  3850.     case 2: fprintf(js_include_file,"\
  3851. \n<!-- begin function 2 read_canvas%d() -->\n\
  3852. read_canvas%d = function(){\
  3853. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3854. set_reply_precision();\
  3855. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3856. var prec = %d;\
  3857. while(userdraw_x[p]){\
  3858.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3859.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  3860.  p++;\
  3861. };\
  3862. if(p == 0){alert(\"nothing drawn...\");return;};\
  3863. if( document.getElementById(\"canvas_input0\")){\
  3864.  var p = 0;var input_reply = new Array();\
  3865.  if( document.getElementById(\"canvas_input0\")){\
  3866.   var t = 0;\
  3867.   while(document.getElementById(\"canvas_input\"+t)){\
  3868.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3869.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3870.     p++;\
  3871.    };\
  3872.    t++;\
  3873.   };\
  3874.  };\
  3875.  if( typeof userdraw_text != 'undefined' ){\
  3876.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3877.  }\
  3878.  else\
  3879.  {\
  3880.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3881.  }\
  3882. }\
  3883. else\
  3884. {\
  3885.  if( typeof userdraw_text != 'undefined' ){\
  3886.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3887.  }\
  3888.  else\
  3889.  {\
  3890.   return reply_x+\"\\n\"+reply_y;\
  3891.  };\
  3892. };\
  3893. };\n\
  3894. <!-- end function 2 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  3895.     break;
  3896.     case 3: fprintf(js_include_file,"\
  3897. \n<!-- begin function 3 read_canvas%d() -->\n\
  3898. read_canvas%d = function(){\
  3899. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3900. set_reply_precision();\
  3901. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3902.  var p = 0;var input_reply = new Array();\
  3903.  if( document.getElementById(\"canvas_input0\")){\
  3904.   var t = 0;\
  3905.   while(document.getElementById(\"canvas_input\"+t)){\
  3906.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3907.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3908.     p++;\
  3909.    };\
  3910.    t++;\
  3911.   };\
  3912.  };\
  3913.  if( typeof userdraw_text != 'undefined' ){\
  3914.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3915.  }\
  3916.  else\
  3917.  {\
  3918.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3919.  }\
  3920. }\
  3921. else\
  3922. {\
  3923.  if( typeof userdraw_text != 'undefined' ){\
  3924.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3925.  }\
  3926.  else\
  3927.  {\
  3928.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3929.  }\
  3930. }\
  3931. };\n\
  3932. <!-- end function 3 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  3933.     break;
  3934.     case 4: fprintf(js_include_file,"\
  3935. \n<!-- begin function 4 read_canvas%d() -->\n\
  3936. read_canvas%d = function(){\
  3937. var prec = %d;\
  3938. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3939. while(userdraw_x[p]){\
  3940.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3941.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;;\
  3942.  p++;\
  3943. };\
  3944. if(p == 0){alert(\"nothing drawn...\");return;};\
  3945. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3946.  var p = 0;var input_reply = new Array();\
  3947.  if( document.getElementById(\"canvas_input0\")){\
  3948.   var t = 0;\
  3949.   while(document.getElementById(\"canvas_input\"+t)){\
  3950.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3951.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3952.     p++;\
  3953.    };\
  3954.    t++;\
  3955.   };\
  3956.  };\
  3957.  if( typeof userdraw_text != 'undefined' ){\
  3958.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3959.  }\
  3960.  else\
  3961.  {\
  3962.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3963.  }\
  3964. }\
  3965. else\
  3966. {\
  3967.  if( typeof userdraw_text != 'undefined' ){\
  3968.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3969.  }\
  3970.  else\
  3971.  {\
  3972.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  3973.  }\
  3974. };\
  3975. };\n\
  3976. <!-- end function 4 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  3977.     break;
  3978.     /*
  3979.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3980.         used for userdraw multiple paths
  3981.     */
  3982.     case 5: fprintf(js_include_file,"\
  3983. \n<!-- begin function 5 read_canvas%d() -->\n\
  3984. read_canvas%d = function(){\
  3985. set_reply_precision();\
  3986. var p = 0;\
  3987. var reply = \"\";\
  3988. for(p = 0; p < userdraw_x.length;p++){\
  3989.  if(userdraw_x[p] != null ){\
  3990.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  3991.  };\
  3992. };\
  3993. if(p == 0){alert(\"nothing drawn...\");return;};\
  3994. userdraw_x = [];userdraw_y = [];\
  3995. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3996.  var p = 0;var input_reply = new Array();\
  3997.  if( document.getElementById(\"canvas_input0\")){\
  3998.   var t = 0;\
  3999.   while(document.getElementById(\"canvas_input\"+t)){\
  4000.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4001.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4002.     p++;\
  4003.    };\
  4004.    t++;\
  4005.   };\
  4006.  };\
  4007.  if( typeof userdraw_text != 'undefined' ){\
  4008.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4009.  }\
  4010.  else\
  4011.  {\
  4012.   return reply +\"\\n\"+input_reply;\
  4013.  }\
  4014. }\
  4015. else\
  4016. {\
  4017.  if( typeof userdraw_text != 'undefined' ){\
  4018.   return reply+\"\\n\"+userdraw_text;\
  4019.  }\
  4020.  else\
  4021.  {\
  4022.   return reply;\
  4023.  }\
  4024. };\
  4025. };\n\
  4026. <!-- end function 5 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4027.     break;
  4028.     /*
  4029.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  4030.         used for userdraw multiple paths
  4031.     */
  4032.     case 6: fprintf(js_include_file,"\
  4033. \n<!-- begin function 6 read_canvas%d() -->\n\
  4034. read_canvas%d = function(){\
  4035. var p = 0;\
  4036. var reply = \"\";\
  4037. var tmp_x = new Array();\
  4038. var tmp_y = new Array();\
  4039. var prec = %d;\
  4040. for(p = 0 ; p < userdraw_x.length; p++){\
  4041.  tmp_x = userdraw_x[p];\
  4042.  tmp_y = userdraw_y[p];\
  4043.  if(tmp_x != null){\
  4044.   for(var i = 0 ; i < tmp_x.length ; i++){\
  4045.    tmp_x[i] = (Math.round(prec*(px2x(tmp_x[i]))))/prec;\
  4046.    tmp_y[i] = (Math.round(prec*(px2y(tmp_y[i]))))/prec;\
  4047.   };\
  4048.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  4049.  };\
  4050. };\
  4051. if(p == 0){alert(\"nothing drawn...\");return;};\
  4052. userdraw_x = [];userdraw_y = [];\
  4053. if( document.getElementById(\"canvas_input0\") ){\
  4054.  var p = 0;var input_reply = new Array();\
  4055.  if( document.getElementById(\"canvas_input0\")){\
  4056.   var t = 0;\
  4057.   while(document.getElementById(\"canvas_input\"+t)){\
  4058.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4059.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4060.     p++;\
  4061.    };\
  4062.    t++;\
  4063.   };\
  4064.  };\
  4065.  if( typeof userdraw_text != 'undefined' ){\
  4066.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4067.  }\
  4068.  else\
  4069.  {\
  4070.   return reply +\"\\n\"+input_reply;\
  4071.  }\
  4072. }\
  4073. else\
  4074. {\
  4075.  if( typeof userdraw_text != 'undefined' ){\
  4076.   return reply +\"\\n\"+userdraw_text;\
  4077.  }\
  4078.  else\
  4079.  {\
  4080.   return reply;\
  4081.  }\
  4082. };\
  4083. };\n\
  4084. <!-- end function 6 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4085.     break;
  4086.     case 7: fprintf(js_include_file,"\
  4087. \n<!-- begin function 7 read_canvas%d() -->\n\
  4088. read_canvas%d = function(){\
  4089. set_reply_precision();\
  4090. var reply = new Array();\
  4091. var p = 0;\
  4092. while(userdraw_x[p]){\
  4093.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  4094.  p++;\
  4095. };\
  4096. if(p == 0){alert(\"nothing drawn...\");return;};\
  4097. if( document.getElementById(\"canvas_input0\") ){\
  4098.  var p = 0;var input_reply = new Array();\
  4099.  if( document.getElementById(\"canvas_input0\")){\
  4100.   var t = 0;\
  4101.   while(document.getElementById(\"canvas_input\"+t)){\
  4102.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4103.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4104.     p++;\
  4105.    };\
  4106.    t++;\
  4107.   };\
  4108.  };\
  4109.  if( typeof userdraw_text != 'undefined' ){\
  4110.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4111.  }\
  4112.  else\
  4113.  {\
  4114.   return reply+\"\\n\"+input_reply;\
  4115.  }\
  4116. }\
  4117. else\
  4118. {\
  4119.  if( typeof userdraw_text != 'undefined' ){\
  4120.   return reply+\"\\n\"+userdraw_text;\
  4121.  }\
  4122.  else\
  4123.  {\
  4124.   return reply;\
  4125.  }\
  4126. };\
  4127. };\n\
  4128. <!-- end function 7 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4129.     break;
  4130.     case 8: fprintf(js_include_file,"\
  4131. \n<!-- begin function 8 read_canvas%d() -->\n\
  4132. read_canvas%d = function(){\
  4133. var reply = new Array();\
  4134. var p = 0;\
  4135. var prec = %d;\
  4136. while(userdraw_x[p]){\
  4137.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  4138.  p++;\
  4139. };\
  4140. if(p == 0){alert(\"nothing drawn...\");return;};\
  4141. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4142.  var p = 0;var input_reply = new Array();\
  4143.  if( document.getElementById(\"canvas_input0\")){\
  4144.   var t = 0;\
  4145.   while(document.getElementById(\"canvas_input\"+t)){\
  4146.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4147.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4148.     p++;\
  4149.    };\
  4150.    t++;\
  4151.   };\
  4152.  };\
  4153.  if( typeof userdraw_text != 'undefined' ){\
  4154.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4155.  }\
  4156.  else\
  4157.  {\
  4158.   return reply +\"\\n\"+input_reply;\
  4159.  }\
  4160. }\
  4161. else\
  4162. {\
  4163.  if( typeof userdraw_text != 'undefined' ){\
  4164.   return reply +\"\\n\"+userdraw_text;\
  4165.  }\
  4166.  else\
  4167.  {\
  4168.   return reply;\
  4169.  }\
  4170. };\
  4171. };\n\
  4172. <!-- end function 8 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4173.     break;
  4174.     case 9: fprintf(js_include_file,"\
  4175. \n<!-- begin function 9 read_canvas%d() -->\n\
  4176. read_canvas%d = function(){\
  4177. set_reply_precision();\
  4178. var reply = new Array();\
  4179. var p = 0;\
  4180. while(userdraw_x[p]){\
  4181.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  4182.  p++;\
  4183. };\
  4184. if(p == 0){alert(\"nothing drawn...\");return;};\
  4185. if( document.getElementById(\"canvas_input0\") ){\
  4186.  var p = 0;var input_reply = new Array();\
  4187.  if( document.getElementById(\"canvas_input0\")){\
  4188.   var t = 0;\
  4189.   while(document.getElementById(\"canvas_input\"+t)){\
  4190.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4191.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4192.     p++;\
  4193.    };\
  4194.    t++;\
  4195.   };\
  4196.  };\
  4197.  if( typeof userdraw_text != 'undefined' ){\
  4198.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4199.  }\
  4200.  else\
  4201.  {\
  4202.   return reply +\"\\n\"+input_reply;\
  4203.  }\
  4204. }\
  4205. else\
  4206. {\
  4207.  if( typeof userdraw_text != 'undefined' ){\
  4208.   return reply +\"\\n\"+userdraw_text;\
  4209.  }\
  4210.  else\
  4211.  {\
  4212.   return reply;\
  4213.  }\
  4214. };\
  4215. };\n\
  4216. <!-- end function 9 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4217.     break;
  4218.     case 10: fprintf(js_include_file,"\
  4219. \n<!-- begin function 10 read_canvas%d() -->\n\
  4220. read_canvas%d = function(){\
  4221. var reply = new Array();\
  4222. var p = 0;\
  4223. var prec = %d;\
  4224. while(userdraw_x[p]){\
  4225.  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;\
  4226.  p++;\
  4227. };\
  4228. if(p == 0){alert(\"nothing drawn...\");return;};\
  4229. if( document.getElementById(\"canvas_input0\") ){\
  4230.  var p = 0;var input_reply = new Array();\
  4231.  if( document.getElementById(\"canvas_input0\")){\
  4232.   var t = 0;\
  4233.   while(document.getElementById(\"canvas_input\"+t)){\
  4234.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4235.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4236.     p++;\
  4237.    };\
  4238.    t++;\
  4239.   };\
  4240.  };\
  4241.  if( typeof userdraw_text != 'undefined' ){\
  4242.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4243.  }\
  4244.  else\
  4245.  {\
  4246.   return reply +\"\\n\"+input_reply;\
  4247.  }\
  4248. }\
  4249. else\
  4250. {\
  4251.  if( typeof userdraw_text != 'undefined' ){\
  4252.   return reply +\"\\n\"+userdraw_text;\
  4253.  }\
  4254.  else\
  4255.  {\
  4256.   return reply;\
  4257.  }\
  4258. };\
  4259. };\n\
  4260. <!-- end function 10 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4261.     break;
  4262.     case 11: fprintf(js_include_file,"\
  4263. \n<!-- begin function 11 read_canvas%d() -->\n\
  4264. read_canvas%d = function(){\
  4265. var reply = \"\";\
  4266. var p = 0;\
  4267. var prec = %d;\
  4268. while(userdraw_x[p]){\
  4269.  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\" ;\
  4270.  p = p+2;\
  4271. };\
  4272. if(p == 0){alert(\"nothing drawn...\");return;};\
  4273. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4274.  var p = 0;var input_reply = new Array();\
  4275.  if( document.getElementById(\"canvas_input0\")){\
  4276.   var t = 0;\
  4277.   while(document.getElementById(\"canvas_input\"+t)){\
  4278.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4279.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4280.     p++;\
  4281.    };\
  4282.    t++;\
  4283.   };\
  4284.  };\
  4285.  if( typeof userdraw_text != 'undefined' ){\
  4286.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4287.  }\
  4288.  else\
  4289.  {\
  4290.   return reply +\"\\n\"+input_reply;\
  4291.  }\
  4292. }\
  4293. else\
  4294. {\
  4295.  if( typeof userdraw_text != 'undefined' ){\
  4296.   return reply +\"\\n\"+userdraw_text;\
  4297.  }\
  4298.  else\
  4299.  {\
  4300.   return reply;\
  4301.  }\
  4302. };\
  4303. };\n\
  4304. <!-- end function 11 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4305.     break;
  4306.     case 12: fprintf(js_include_file,"\
  4307. \n<!-- begin function 12 read_canvas%d() -->\n\
  4308. read_canvas%d = function(){\
  4309. set_reply_precision();\
  4310. var reply = \"\";\
  4311. var p = 0;\
  4312. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  4313.  if(userdraw_x[p] != null){\
  4314.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  4315.  };\
  4316. };\
  4317. if(p == 0){alert(\"nothing drawn...\");return;};\
  4318. if( document.getElementById(\"canvas_input0\") ){\
  4319.  var p = 0;var input_reply = new Array();\
  4320.  if( document.getElementById(\"canvas_input0\")){\
  4321.   var t = 0;\
  4322.   while(document.getElementById(\"canvas_input\"+t)){\
  4323.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4324.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4325.     p++;\
  4326.    };\
  4327.    t++;\
  4328.   };\
  4329.  };\
  4330.  if( typeof userdraw_text != 'undefined' ){\
  4331.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4332.  }\
  4333.  else\
  4334.  {\
  4335.   return reply +\"\\n\"+input_reply;\
  4336.  }\
  4337. }\
  4338. else\
  4339. {\
  4340.  if( typeof userdraw_text != 'undefined' ){\
  4341.   return reply +\"\\n\"+userdraw_text\
  4342.  }\
  4343.  else\
  4344.  {\
  4345.   return reply;\
  4346.  }\
  4347. };\
  4348. };\n\
  4349. <!-- end function 12 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4350.     break;
  4351.     case 13: fprintf(js_include_file,"\
  4352. \n<!-- begin function 13 read_canvas%d() -->\n\
  4353. read_canvas%d = function(){\
  4354. var reply = new Array();\
  4355. var p = 0;var i = 0;\
  4356. var prec = %d;\
  4357. while(userdraw_x[p]){\
  4358.  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;\
  4359.  p = p+2;i++;\
  4360. };\
  4361. if(p == 0){alert(\"nothing drawn...\");return;};\
  4362. if( document.getElementById(\"canvas_input0\") ){\
  4363.  var p = 0;var input_reply = new Array();\
  4364.  if( document.getElementById(\"canvas_input0\")){\
  4365.   var t = 0;\
  4366.   while(document.getElementById(\"canvas_input\"+t)){\
  4367.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4368.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4369.     p++;\
  4370.    };\
  4371.    t++;\
  4372.   };\
  4373.  };\
  4374.  if( typeof userdraw_text != 'undefined' ){\
  4375.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4376.  }\
  4377.  else\
  4378.  {\
  4379.   return reply +\"\\n\"+input_reply;\
  4380.  }\
  4381. }\
  4382. else\
  4383. {\
  4384.  if( typeof userdraw_text != 'undefined' ){\
  4385.   return reply +\"\\n\"+userdraw_text\
  4386.  }\
  4387.  else\
  4388.  {\
  4389.   return reply;\
  4390.  }\
  4391. };\
  4392. };\n\
  4393. <!-- end function 13 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4394.     break;
  4395.     case 14: fprintf(js_include_file,"\
  4396. \n<!-- begin function 14 read_canvas%d() -->\n\
  4397. read_canvas%d = function(){\
  4398. set_reply_precision();\
  4399. var reply = new Array();\
  4400. var p = 0;var i = 0;\
  4401. while(userdraw_x[p]){\
  4402.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  4403.  p = p+2;i++;\
  4404. };\
  4405. if(p == 0){alert(\"nothing drawn...\");return;};\
  4406. if( document.getElementById(\"canvas_input0\") ){\
  4407.  var p = 0;var input_reply = new Array();\
  4408.  if( document.getElementById(\"canvas_input0\")){\
  4409.   var t = 0;\
  4410.   while(document.getElementById(\"canvas_input\"+t)){\
  4411.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4412.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4413.     p++;\
  4414.    };\
  4415.    t++;\
  4416.   };\
  4417.  };\
  4418.  if( typeof userdraw_text != 'undefined' ){\
  4419.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4420.  }\
  4421.  else\
  4422.  {\
  4423.   return reply +\"\\n\"+input_reply;\
  4424.  }\
  4425. }\
  4426. else\
  4427. {\
  4428.  if( typeof userdraw_text != 'undefined' ){\
  4429.   return reply +\"\\n\"+userdraw_text;\
  4430.  }\
  4431.  else\
  4432.  {\
  4433.   return reply;\
  4434.  }\
  4435. };\
  4436. };\n\
  4437. <!-- end function 14 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4438.     break;
  4439.     case 15: fprintf(js_include_file,"\
  4440. \n<!-- begin function 15  read_canvas%d() -->\n\
  4441. read_canvas%d = function(){\
  4442. var input_reply = new Array();\
  4443. var p = 0;\
  4444. if( document.getElementById(\"canvas_input0\")){\
  4445.  var t = 0;\
  4446.  while(document.getElementById(\"canvas_input\"+t)){\
  4447.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4448.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4449.    p++;\
  4450.   };\
  4451.   t++;\
  4452.  };\
  4453. };\
  4454. if( typeof userdraw_text != 'undefined' ){\
  4455.   return input_reply +\"\\n\"+userdraw_text;\
  4456. }\
  4457. else\
  4458. {\
  4459.  return input_reply;\
  4460. };\
  4461. };\n\
  4462. <!-- end function 15 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4463.     break;
  4464.     case 16: fprintf(js_include_file,"\
  4465. \n<!-- begin function 16 read_mathml() -->\n\
  4466. function read_mathml(){\
  4467. var reply = new Array();\
  4468. var p = 0;\
  4469. if( document.getElementById(\"mathml0\")){\
  4470.  while(document.getElementById(\"mathml\"+p)){\
  4471.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  4472.   p++;\
  4473.  };\
  4474. };\
  4475. return reply;\
  4476. };\
  4477. this.read_mathml = read_mathml;\n\
  4478. <!-- end function 16 read_mathml() -->");
  4479.     break;
  4480.     case 17:  fprintf(js_include_file,"\
  4481. \n<!-- begin function 17 read_canvas%d() -->\n\
  4482. read_canvas%d = function(){\
  4483. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  4484. return userdraw_text;\
  4485. };\n\
  4486. <!-- end function 17 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4487.     break;
  4488.     case 18: fprintf(js_include_file,"\
  4489. \n<!-- begin function 18 read_canvas%d() -->\n\
  4490. read_canvas%d = function(){\
  4491. var p = 0;\
  4492. var reply = new Array();\
  4493. var name;\
  4494. var t = true;\
  4495. var h;var m;var s;\
  4496. while(t){\
  4497.  try{\
  4498.   name = eval('clocks'+p);\
  4499.   h = name.H;m = name.M;s = name.S;\
  4500.   if(s < 0){s = 60 + s;m = m - 1;};\
  4501.   if(m < 0){m = 60 + m;h = h - 1;};\
  4502.   if(h < 0){h = 12 + h;};\
  4503.   h = parseInt((h+m/60+s/3600)%%12);m = parseInt((m + s/60)%%60);s = parseInt(s%%60);\
  4504.   reply[p] = h+\":\"+m+\":\"+s;\
  4505.   p++;\
  4506.  }catch(e){t=false;};\
  4507. };\
  4508. if( p == 0 ){alert(\"clock(s) not modified...\");return;}\
  4509. return reply;\
  4510. };\n\
  4511. <!-- end function 18 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4512.     break;
  4513.     case 19: fprintf(js_include_file,"\
  4514. \n<!-- begin function 19 read_canvas%d() -->\n\
  4515. read_canvas%d = function(){\
  4516. return reply[0];\
  4517. };\n\
  4518. <!-- end function 19 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4519.     break;
  4520.     case 20: fprintf(js_include_file,"\
  4521. \n<!-- begin function 20 read_canvas%d() -->\n\
  4522. read_canvas%d = function(){\
  4523. var prec = %d;\
  4524. var len  = ext_drag_images.length;\
  4525. var reply = new Array(len);\
  4526. for(var p = 0 ; p < len ; p++){\
  4527.    var img = ext_drag_images[p];\
  4528.    reply[p] = (Math.round(prec*(px2x(img[6]))))/prec+\":\"+(Math.round(prec*(px2y(img[7]))))/prec;\
  4529. };\
  4530. return reply;\
  4531. };\n\
  4532. <!-- end function 20 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4533.     break;
  4534.     case 21: fprintf(js_include_file,"\
  4535. \n<!-- begin function 21 read_canvas%d() -->\n\
  4536. read_canvas%d = function(){\
  4537. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  4538. var reply_coord = new Array();var p = 0;\
  4539. var prec = %d;\
  4540. while(userdraw_x[p]){\
  4541.  reply_coord[p] = \"(\"+(Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\")\";\
  4542.  p++;\
  4543. };\
  4544. if(p == 0){alert(\"nothing drawn...\");return;};\
  4545. if( document.getElementById(\"canvas_input0\") ){\
  4546.  var p = 0;var input_reply = new Array();\
  4547.  if( document.getElementById(\"canvas_input0\")){\
  4548.   var t = 0;\
  4549.   while(document.getElementById(\"canvas_input\"+t)){\
  4550.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4551.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4552.     p++;\
  4553.    };\
  4554.    t++;\
  4555.   };\
  4556.  };\
  4557.  if( typeof userdraw_text != 'undefined' ){\
  4558.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4559.  }\
  4560.  else\
  4561.  {\
  4562.   return reply_coord+\"\\n\"+input_reply;\
  4563.  }\
  4564. }\
  4565. else\
  4566. {\
  4567.  if( typeof userdraw_text != 'undefined' ){\
  4568.   return reply_coord+\"\\n\"+userdraw_text;\
  4569.  }\
  4570.  else\
  4571.  {\
  4572.   return reply_coord;\
  4573.  };\
  4574. };\
  4575. };\n\
  4576. <!-- end function 21 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4577.     break;
  4578.     case 22: fprintf(js_include_file,"\
  4579. \n<!-- begin function 22 read_canvas%d() -->\n\
  4580. read_canvas%d = function(){\
  4581. var reply = new Array();\
  4582. var lu = userdraw_x.length;\
  4583. if(lu == 0){alert(\"nothing drawn...\");return;};\
  4584. var idx = 0;\
  4585. var prec = %d;\
  4586. for(var p = 0 ; p < lu ; p++){\
  4587.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;idx++;\
  4588.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;idx++;\
  4589. };\
  4590. if( document.getElementById(\"canvas_input0\") ){\
  4591.  var p = 0;var input_reply = new Array();\
  4592.  if( document.getElementById(\"canvas_input0\")){\
  4593.   var t = 0;\
  4594.   while(document.getElementById(\"canvas_input\"+t)){\
  4595.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4596.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4597.     p++;\
  4598.    };\
  4599.    t++;\
  4600.   };\
  4601.  };\
  4602.  if( typeof userdraw_text != 'undefined' ){\
  4603.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4604.  }\
  4605.  else\
  4606.  {\
  4607.   return reply +\"\\n\"+input_reply;\
  4608.  }\
  4609. }\
  4610. else\
  4611. {\
  4612.  if( typeof userdraw_text != 'undefined' ){\
  4613.   return reply +\"\\n\"+userdraw_text;\
  4614.  }\
  4615.  else\
  4616.  {\
  4617.   return reply;\
  4618.  }\
  4619. };\
  4620. };\n\
  4621. <!-- end function 22 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4622.     break;
  4623.     case 23: fprintf(js_include_file,"\
  4624. \n<!-- begin function 23 read_canvas%d() default 5 px marge -->\n\
  4625. read_canvas%d = function(){\
  4626. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  4627. var lu = userdraw_x.length;\
  4628. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  4629. var reply_x = new Array();var reply_y = new Array();\
  4630. var marge = 5;var p = 0;\
  4631. var prec = %d;\
  4632. for(var i = 0; i < lu - 1 ; i++ ){\
  4633.  if( Math.abs(userdraw_x[i] - userdraw_x[i+1])){\
  4634.   reply_x[p] = (Math.round(prec*(px2x(userdraw_x[i]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[i]))))/prec;\
  4635.   if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  4636.   p++;\
  4637.  };\
  4638.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[lu-1]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[lu-1]))))/prec;\
  4639. };\
  4640. if( document.getElementById(\"canvas_input0\")){\
  4641.  var p = 0;var input_reply = new Array();\
  4642.  if( document.getElementById(\"canvas_input0\")){\
  4643.   var t = 0;\
  4644.   while(document.getElementById(\"canvas_input\"+t)){\
  4645.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4646.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4647.     p++;\
  4648.    };\
  4649.    t++;\
  4650.   };\
  4651.  };\
  4652.  if( typeof userdraw_text != 'undefined' ){\
  4653.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4654.  }\
  4655.  else\
  4656.  {\
  4657.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4658.  }\
  4659. }\
  4660. else\
  4661. {\
  4662.  if( typeof userdraw_text != 'undefined' ){\
  4663.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4664.  }\
  4665.  else\
  4666.  {\
  4667.   return reply_x+\"\\n\"+reply_y;\
  4668.  };\
  4669. };\
  4670. };\n\
  4671. <!-- end function 23 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4672.     break;
  4673.     case 24: fprintf(js_include_file,"\n\
  4674. <!-- begin function 24  read_canvas%d() -->\n\
  4675. read_canvas%d = function(){\
  4676. var input_reply = new Array();\
  4677. var p = 0;\
  4678. if( document.getElementById(\"canvas_input0\")){\
  4679.  while(document.getElementById(\"canvas_input\"+p)){\
  4680.    input_reply[p] = document.getElementById(\"canvas_input\"+p).value;\
  4681.    p++;\
  4682.  };\
  4683.  return input_reply;\
  4684. };\
  4685. };\n\
  4686. <!-- end function 24 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4687.     break;
  4688.     case 25:
  4689.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas%d() : angle(s) in degrees-->\n\
  4690. read_canvas%d = function(){\
  4691. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4692. var lu = userdraw_radius.length;\
  4693. var prec = %d;\
  4694. var angle_reply = new Array(lu);\
  4695. for(var p = 0 ; p < lu ; p++){\
  4696.  angle_reply[p] = (Math.round(prec*180*(userdraw_radius[p])/Math.PI))/prec;\
  4697. };\
  4698. return angle_reply;\
  4699. };\n\
  4700. <!-- end function 25 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4701.     break;
  4702.     case 26:
  4703.     fprintf(js_include_file,"\n<!-- begin function 26 read_canvas%d() : angle(s) in radians-->\n\
  4704. read_canvas%d = function(){\
  4705. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4706. var lu = userdraw_radius.length;\
  4707. var prec = %d;\
  4708. var angle_reply = new Array(lu);\
  4709. for(var p = 0 ; p < lu ; p++){\
  4710.  angle_reply[p] = (Math.round(prec*(userdraw_radius[p])))/prec;\
  4711. };\
  4712. return angle_reply;\
  4713. };\n\
  4714. <!-- end function 26 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4715.     break;
  4716.     case 27:
  4717.     fprintf(js_include_file,"\n<!-- begin function 27 read_canvas%d()  : inputfield(s) location and their values : -->\n\
  4718. read_canvas%d = function(){\
  4719. var lu = userdraw_x.length;\
  4720. if( lu < 1){alert(\"nothing drawn...\");return;}\
  4721. set_reply_precision();\
  4722. var prec = %d;\
  4723. for(var p = 0 ; p < lu ; p++){\
  4724.   reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\":\"+ document.getElementById(\"canvas_input\"+p).value;\
  4725. };\
  4726. return reply;\
  4727. };\n\
  4728. <!-- end function 27 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4729.     break;
  4730.     default: canvas_error("hmmm unknown replyformat...");break;
  4731. }
  4732.  return;
  4733. }
  4734.  
  4735.  
  4736. /*
  4737.  add drawfunction :
  4738.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4739.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4740.  - grid / mathml
  4741.  - will not scale or zoom in
  4742.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4743.  - is printed directly into 'js_include_file'
  4744. */
  4745.  
  4746. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4747. int i;
  4748. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4749.  if( js_functions[i] == 1){
  4750.     switch(i){
  4751.     case DRAG_EXTERNAL_IMAGE:
  4752. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4753. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4754. var external_ctx = external_canvas.getContext(\"2d\");\
  4755. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4756. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4757. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4758. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4759. var selected_image = null;\
  4760. var ext_image_cnt = 0;\
  4761. var ext_drag_images = new Array();\
  4762. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4763. ext_image_cnt = idx;\
  4764. var image = new Image();\
  4765. image.src = URL;\
  4766. image.onload = function(){\
  4767.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4768.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4769.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4770.  var img = new Array(10);\
  4771.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4772.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4773.  ext_drag_images[idx] = img;\
  4774.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4775. };\
  4776. };\
  4777. function dragstop(evt){\
  4778. selected_image = null;return;\
  4779. };\
  4780. function dragxy(evt){\
  4781. if( selected_image != null ){\
  4782.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4783.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4784.  var s_img = ext_drag_images[selected_image];\
  4785.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4786.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4787.  ext_drag_images[selected_image] = s_img;\
  4788.  external_ctx.clearRect(0,0,xsize,ysize);\
  4789.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4790.   var img = ext_drag_images[i];\
  4791.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4792.  };\
  4793. };\
  4794. };\
  4795. function setxy(evt){\
  4796. if( ! selected_image && evt.which == 1 ){\
  4797.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4798.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4799.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4800.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4801.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4802.   var img = ext_drag_images[p];\
  4803.   if( img[0] == 1 ){\
  4804.    var w = img.width;\
  4805.    var h = img.height;\
  4806.    if( xm > img[6] && xm < img[6] + img[4]){\
  4807.     if( ym > img[7] && ym < img[7] + img[5]){\
  4808.      img[6] = xm;\
  4809.      img[7] = ym;\
  4810.      ext_drag_images[p] = img;\
  4811.      selected_image = p;\
  4812.      dragxy(evt);\
  4813.     };\
  4814.    };\
  4815.   };\
  4816.  };\
  4817. }\
  4818. else\
  4819. {\
  4820.  selected_image = null;\
  4821. };\
  4822. };",canvas_root_id);
  4823.     break;
  4824.  
  4825.     case DRAW_EXTERNAL_IMAGE:
  4826. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4827. var draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4828. var image = new Image();\
  4829. image.src = URL;\
  4830. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4831. image.onload = function(){\
  4832.  if( x0 < 1 ){ x0 = 0; };\
  4833.  if( y0 < 1 ){ y0 = 0; };\
  4834.  if( sx < 1 ){ sx = 0; };\
  4835.  if( sy < 1 ){ sy = 0; };\
  4836.  if( width < 1 ){ width = image.width;};\
  4837.  if( height < 1 ){ height = image.height;};\
  4838.  if( swidth < 1 ){ swidth = image.width;};\
  4839.  if( sheight < 1 ){ sheight = image.height;};\
  4840.  var ml = x0 - sx;\
  4841.  var mh = y0 - sy;\
  4842.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4843.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4844.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4845.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4846.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4847. };\
  4848. };",canvas_root_id);
  4849.     break;
  4850.     case DRAW_GRIDFILL:/* not used for userdraw */
  4851. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4852. var draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4853. var obj;\
  4854. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4855.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4856. }\
  4857. else\
  4858. {\
  4859.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4860. };\
  4861. var ctx = obj.getContext(\"2d\");\
  4862. var x,y;\
  4863. snap_x = dx;snap_y = dy;\
  4864. ctx.save();\
  4865. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4866. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4867.    ctx.moveTo(x,y0);\
  4868.    ctx.lineTo(x,ysize);\
  4869. };\
  4870. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4871.    ctx.moveTo(x0,y);\
  4872.    ctx.lineTo(xsize,y);\
  4873. };\
  4874. ctx.stroke();\
  4875. ctx.restore();\
  4876. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4877.     break;
  4878.  
  4879.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4880. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4881. var draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4882. var obj;\
  4883. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4884.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4885. }\
  4886. else\
  4887. {\
  4888.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4889. };\
  4890. var ctx = obj.getContext(\"2d\");\
  4891. ctx.save();\
  4892. var img = new Image();\
  4893. img.src = URL;\
  4894. img.onload = function(){\
  4895.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4896.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4897.  }\
  4898.  else\
  4899.  {\
  4900.    var repeat = \"repeat\";\
  4901.    if(img.width > xsize - x0){\
  4902.         repeat = \"repeat-y\";\
  4903.    }\
  4904.    else\
  4905.    {\
  4906.     if( img.height > ysize -x0 ){\
  4907.      repeat = \"repeat-x\";\
  4908.     }\
  4909.    }\
  4910.    var pattern = ctx.createPattern(img,repeat);\
  4911.    ctx.rect(x0,y0,xsize,ysize);\
  4912.    ctx.fillStyle = pattern;\
  4913.  }\
  4914.  ctx.fill();\
  4915. };\
  4916. ctx.restore();\
  4917. return;\
  4918. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4919.     break;
  4920.  
  4921.     case DRAW_DOTFILL:/* not  used for userdraw */
  4922. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4923. var draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4924. var obj;\
  4925. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4926.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4927. }\
  4928. else\
  4929. {\
  4930.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4931. };\
  4932. var ctx = obj.getContext(\"2d\");\
  4933. var x,y;\
  4934. ctx.closePath();\
  4935. ctx.save();\
  4936. snap_x = dx;snap_y = dy;\
  4937. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4938. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4939.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4940.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4941.   ctx.closePath();\
  4942.  }\
  4943. }\
  4944. ctx.fill();\
  4945. ctx.restore();\
  4946. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4947.     break;
  4948.  
  4949.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4950. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4951. var draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4952.  var obj;\
  4953. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4954.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4955. }\
  4956. else\
  4957. {\
  4958.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4959. };\
  4960. var ctx = obj.getContext(\"2d\");\
  4961. var x;\
  4962. var y;\
  4963. ctx.save();\
  4964. ctx.lineWidth = linewidth;\
  4965. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4966. y = ysize;\
  4967. for( x = x0 ; x < xsize ; x = x + dx ){\
  4968.  ctx.moveTo(x,y0);\
  4969.  ctx.lineTo(xsize,y);\
  4970.  y = y - dy;\
  4971. };\
  4972. y = y0;\
  4973. for( x = xsize ; x > 0 ; x = x - dx){\
  4974.  ctx.moveTo(x,ysize);\
  4975.  ctx.lineTo(x0,y);\
  4976.  y = y + dy;\
  4977. };\
  4978. x = x0;\
  4979. for( y = y0 ; y < ysize ; y = y + dy ){\
  4980.  ctx.moveTo(xsize,y);\
  4981.  ctx.lineTo(x,ysize);\
  4982.  x = x + dx;\
  4983. };\
  4984. x = xsize;\
  4985. for( y = ysize ; y > y0 ; y = y - dy ){\
  4986.  ctx.moveTo(x,y0);\
  4987.  ctx.lineTo(x0,y);\
  4988.  x = x - dx;\
  4989. };\
  4990. ctx.stroke();\
  4991. ctx.restore();\
  4992. return;\
  4993. }",canvas_root_id,canvas_root_id,canvas_root_id);
  4994.     break;
  4995.  
  4996.     case DRAW_HATCHFILL:/* not used for userdraw */
  4997. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4998. var draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4999.  var obj;\
  5000. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5001.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5002. }\
  5003. else\
  5004. {\
  5005.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5006. };\
  5007. var ctx = obj.getContext(\"2d\");\
  5008. var x;\
  5009. var y;\
  5010. ctx.save();\
  5011. ctx.lineWidth = linewidth;\
  5012. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5013. y = ysize;\
  5014. for( x = x0 ; x < xsize ; x = x + dx ){\
  5015.  ctx.moveTo(x,y0);\
  5016.  ctx.lineTo(xsize,y);\
  5017.  y = y - dy;\
  5018. };\
  5019. y = y0;\
  5020. for( x = xsize ; x >= dx ; x = x - dx){\
  5021.  ctx.moveTo(x,ysize);\
  5022.  ctx.lineTo(x0,y);\
  5023.  y = y + dy;\
  5024. };\
  5025. ctx.stroke();\
  5026. ctx.restore();\
  5027. return;\
  5028. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5029.     break;
  5030.     case DRAW_CIRCLES:/*  used for userdraw */
  5031. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  5032. 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){\
  5033. ctx.save();\
  5034. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5035. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5036. ctx.lineWidth = line_width;\
  5037. for(var p = 0 ; p < x_points.length ; p++ ){\
  5038.  ctx.beginPath();\
  5039.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  5040.  ctx.closePath();\
  5041.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5042.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5043.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5044.  ctx.stroke();\
  5045. }\
  5046. ctx.restore();\
  5047. return;\
  5048. };");
  5049.     break;
  5050.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  5051. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  5052. 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){\
  5053. ctx.save();\
  5054. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5055. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5056. ctx.lineWidth = line_width;\
  5057. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5058. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5059. ctx.clearRect(0,0,xsize,ysize);\
  5060. ctx.beginPath();\
  5061. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  5062.  ctx.moveTo(x_points[p],y_points[p]);\
  5063.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5064. }\
  5065. ctx.closePath();\
  5066. ctx.stroke();\
  5067. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5068. for(var p = 0 ; p < x_points.length ; p++ ){\
  5069.  ctx.beginPath();\
  5070.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  5071.  ctx.closePath();ctx.fill();ctx.stroke();\
  5072. };\
  5073. ctx.restore();\
  5074. return;\
  5075. };");
  5076.     break;
  5077.  
  5078.     case DRAW_SEGMENTS:/*  used for userdraw */
  5079. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  5080. 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){\
  5081. ctx.save();\
  5082. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5083. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5084. ctx.lineWidth = line_width;\
  5085. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5086. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5087. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5088.  ctx.beginPath();\
  5089.  ctx.moveTo(x_points[p],y_points[p]);\
  5090.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5091.  ctx.closePath();\
  5092.  ctx.stroke();\
  5093.  }\
  5094.  ctx.restore();\
  5095.  return;\
  5096. };");
  5097.     break;
  5098.  
  5099.     case DRAW_LINES:/*  used for userdraw */
  5100. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  5101. function calc_line(x1,x2,y1,y2){\
  5102. var marge = 2;\
  5103. if(x1 < x2+marge && x1>x2-marge){\
  5104.  return [x1,0,x1,ysize];\
  5105. };\
  5106. if(y1 < y2+marge && y1>y2-marge){\
  5107.  return [0,y1,xsize,y1];\
  5108. };\
  5109. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  5110. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  5111. return [0,Y1,xsize,Y2];\
  5112. };\
  5113. 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){\
  5114. ctx.save();\
  5115. var line = new Array(4);\
  5116. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5117. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5118. ctx.lineWidth = line_width;\
  5119. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5120. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5121. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5122.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  5123.  ctx.beginPath();\
  5124.  ctx.moveTo(line[0],line[1]);\
  5125.  ctx.lineTo(line[2],line[3]);\
  5126.  ctx.closePath();\
  5127.  ctx.stroke();\
  5128.  }\
  5129.  ctx.restore();\
  5130.  return;\
  5131. };");
  5132.     break;
  5133.  
  5134.     case DRAW_DEMILINES:/*  used for userdraw */
  5135. fprintf(js_include_file,"\n<!-- draw demilines -->\n\
  5136. function find_inf_point(x1,y1,x2,y2){\
  5137. if(x1<x2+2 && x1>x2-2){if(y1<y2){return [x1,y1,x1,ysize];}else{return [x1,0,x1,y1];};};\
  5138. var rc = (y2 - y1)/(x2 - x1);var q = y1 - (x1)*rc;\
  5139. if( x1 < x2 ){ return [x1,y1,xsize,rc*xsize+q];}else{return [x1,y1,0,q];};\
  5140. };\
  5141. 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){\
  5142. ctx.save();\
  5143. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5144. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5145. ctx.lineWidth = line_width;\
  5146. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5147. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5148. var pair = new Array(4);\
  5149. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5150.  pair = find_inf_point(x_points[p],y_points[p],x_points[p+1],y_points[p+1]);\
  5151.  ctx.beginPath();\
  5152.  ctx.moveTo(pair[0],pair[1]);\
  5153.  ctx.lineTo(pair[2],pair[3]);\
  5154.  ctx.closePath();\
  5155.  ctx.stroke();\
  5156.  }\
  5157.  ctx.restore();\
  5158.  return;\
  5159. };");
  5160.     break;
  5161.  
  5162.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  5163. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  5164. var draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  5165. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5166. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5167. ctx.lineWidth = line_width;\
  5168. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5169. var x1,x2,y1,y2;\
  5170. for(var p = 0 ; p < x_points.length ; p++ ){\
  5171.  x1 = x_points[p] - crosshair_size;\
  5172.  x2 = x_points[p] + crosshair_size;\
  5173.  y1 = y_points[p] - crosshair_size;\
  5174.  y2 = y_points[p] + crosshair_size;\
  5175.  ctx.beginPath();\
  5176.  ctx.moveTo(x1,y1);\
  5177.  ctx.lineTo(x2,y2);\
  5178.  ctx.closePath();\
  5179.  ctx.stroke();\
  5180.  ctx.beginPath();\
  5181.  ctx.moveTo(x2,y1);\
  5182.  ctx.lineTo(x1,y2);\
  5183.  ctx.closePath();\
  5184.  ctx.stroke();\
  5185. }\
  5186. ctx.restore();\
  5187.  return;\
  5188. };");
  5189.     break;
  5190.  
  5191.     case DRAW_RECTS:/*  used for userdraw */
  5192. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  5193. 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){\
  5194. ctx.save();\
  5195. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5196. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5197. ctx.lineWidth = line_width;\
  5198. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  5199. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  5200. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  5201.  ctx.beginPath();\
  5202.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  5203.  ctx.closePath();\
  5204.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5205.  ctx.stroke();\
  5206. };\
  5207. ctx.restore();\
  5208. return;\
  5209. };");
  5210.     break;
  5211.  
  5212.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  5213. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  5214. 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){\
  5215. ctx.save();\
  5216. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5217. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5218. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5219. var x,y,w,h,r;\
  5220. for(var p = 0; p < x_points.length; p = p+2){\
  5221.  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);\
  5222.  ctx.beginPath();ctx.moveTo(x + r, y);\
  5223.  ctx.lineTo(x + w - r, y);\
  5224.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  5225.  ctx.lineTo(x + w, y + h - r);\
  5226.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  5227.  ctx.lineTo(x + r, y + h);\
  5228.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  5229.  ctx.lineTo(x, y + r);\
  5230.  ctx.quadraticCurveTo(x, y, x + r, y);\
  5231.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  5232.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5233.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  5234.  ctx.stroke();\
  5235. }\
  5236. ctx.restore();\
  5237. };");
  5238.     break;
  5239.  
  5240.     case DRAW_ELLIPSES:/* not  used for userdraw */
  5241. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  5242. 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){\
  5243. var obj;\
  5244. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5245.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5246. }\
  5247. else\
  5248. {\
  5249.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5250. };\
  5251. var ctx = obj.getContext(\"2d\");\
  5252. ctx.save();\
  5253. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5254. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5255. var cx,cy,ry,rx;\
  5256. ctx.lineWidth = line_width;\
  5257. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  5258. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5259. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5260. for(var p=0;p< x_points.length;p = p+2){\
  5261.  ctx.beginPath();\
  5262.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  5263.  ctx.translate(cx - rx, cy - ry);\
  5264.  ctx.scale(rx, ry);\
  5265.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  5266.  if( use_filled == 1 ){ctx.fill();}\
  5267.  ctx.stroke();\
  5268. };\
  5269. ctx.restore();\
  5270. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5271.     break;
  5272.  
  5273.     case DRAW_PATHS: /*  used for userdraw */
  5274. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  5275. 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){\
  5276. ctx.save();\
  5277. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5278. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5279. ctx.lineWidth = line_width;\
  5280. ctx.lineJoin = \"round\";\
  5281. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5282. ctx.beginPath();\
  5283. ctx.moveTo(x_points[0],y_points[0]);\
  5284. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  5285. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  5286. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5287. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5288. ctx.stroke();\
  5289. ctx.restore();\
  5290. return;\
  5291. };");
  5292.  
  5293.     break;
  5294.     case DRAW_ARROWS:/*  used for userdraw */
  5295. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  5296. 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){\
  5297. ctx.save();\
  5298. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5299. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5300. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5301. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5302. ctx.lineWidth = line_width;\
  5303. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5304. ctx.lineCap = \"round\";\
  5305. var x1,y1,x2,y2,dx,dy,len;\
  5306. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  5307.   ctx.save();\
  5308.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  5309.   len = Math.sqrt(dx*dx+dy*dy);\
  5310.   ctx.translate(x2,y2);\
  5311.   ctx.rotate(Math.atan2(dy,dx));\
  5312.   ctx.lineCap = \"round\";\
  5313.   ctx.beginPath();\
  5314.   ctx.moveTo(0,0);\
  5315.   ctx.lineTo(-len,0);\
  5316.   ctx.closePath();\
  5317.   ctx.stroke();\
  5318.   ctx.beginPath();\
  5319.   ctx.moveTo(0,0);\
  5320.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5321.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5322.   ctx.closePath();\
  5323.   ctx.fill();\
  5324.   ctx.restore();\
  5325.   if( type == 2 ){\
  5326.     ctx.save();\
  5327.     ctx.translate(x1,y1);\
  5328.     ctx.rotate(Math.atan2(-dy,-dx));\
  5329.     ctx.beginPath();\
  5330.     ctx.moveTo(0,0);\
  5331.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5332.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5333.     ctx.closePath();\
  5334.     ctx.stroke();\
  5335.     ctx.fill();\
  5336.     ctx.restore();\
  5337.   }\
  5338.  }\
  5339.  ctx.restore();\
  5340.  return;\
  5341. };");
  5342.     break;
  5343.  
  5344.     case DRAW_VIDEO:/* not  used for userdraw */
  5345. fprintf(js_include_file,"\n<!-- draw video -->\n\
  5346. var draw_video = function(canvas_root_id,x,y,w,h,URL){\
  5347. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5348. var video_div = document.createElement(\"div\");\
  5349. canvas_div.appendChild(video_div);\
  5350. video_div.style.position = \"absolute\";\
  5351. video_div.style.left = x+\"px\";\
  5352. video_div.style.top = y+\"px\";\
  5353. video_div.style.width = w+\"px\";\
  5354. video_div.style.height = h+\"px\";\
  5355. var video = document.createElement(\"video\");\
  5356. video_div.appendChild(video);\
  5357. video.style.width = w+\"px\";\
  5358. video.style.height = h+\"px\";\
  5359. video.autobuffer = true;\
  5360. video.controls = true;video.autoplay = false;\
  5361. var src = document.createElement(\"source\");\
  5362. src.type = \"video/mp4\";\
  5363. src.src = URL;\
  5364. video.appendChild(src);\
  5365. video.load();\
  5366. return;\
  5367. };");
  5368.     break;
  5369.  
  5370.     case DRAW_AUDIO:/* not used for userdraw */
  5371. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  5372. var draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  5373. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5374. var audio_div = document.createElement(\"div\");\
  5375. canvas_div.appendChild(audio_div);\
  5376. audio_div.style.position = \"absolute\";\
  5377. audio_div.style.left = x+\"px\";\
  5378. audio_div.style.top = y+\"px\";\
  5379. audio_div.style.width = w+\"px\";\
  5380. audio_div.style.height = h+\"px\";\
  5381. var audio = document.createElement(\"audio\");\
  5382. audio_div.appendChild(audio);\
  5383. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  5384. audio.autobuffer = true;\
  5385. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  5386. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  5387. var src1 = document.createElement(\"source\");\
  5388. src1.type = \"audio/ogg\";\
  5389. src1.src = URL1;\
  5390. audio.appendChild(src1);\
  5391. var src2 = document.createElement(\"source\");\
  5392. src2.type = \"audio/mpeg\";\
  5393. src2.src = URL2;\
  5394. audio.appendChild(src2);\
  5395. audio.load();\
  5396. return;\
  5397. };");
  5398.     break;
  5399.  
  5400.     case DRAW_HTTP:/* not  used for userdraw */
  5401. fprintf(js_include_file,"\n<!-- draw http -->\n\
  5402. var draw_http = function(canvas_root_id,x,y,w,h,URL){\
  5403. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5404. var http_div = document.createElement(\"div\");\
  5405. var iframe = document.createElement(\"iframe\");\
  5406. canvas_div.appendChild(http_div);\
  5407. http_div.appendChild(iframe);\
  5408. iframe.src = URL;\
  5409. iframe.setAttribute(\"width\",w);\
  5410. iframe.setAttribute(\"height\",h);\
  5411. return;\
  5412. };");
  5413.     break;
  5414.  
  5415.     case DRAW_XML:
  5416. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  5417. var draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  5418. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5419. var xml_div = document.createElement(\"div\");\
  5420. canvas_div.appendChild(xml_div);\
  5421. xml_div.innerHTML = mathml;\
  5422. if(onclick != 0){\
  5423.  xml_div.onclick = function(){\
  5424.   reply[0] = onclick;\
  5425.   alert(\"send \"+onclick+\" ?\");\
  5426.  };\
  5427. };\
  5428. xml_div.style.position = \"absolute\";\
  5429. xml_div.style.left = x+\"px\";\
  5430. xml_div.style.top = y+\"px\";\
  5431. xml_div.style.width = w+\"px\";\
  5432. xml_div.style.height = h+\"px\";\
  5433. return;\
  5434. };"
  5435. );
  5436.     break;
  5437.     case DRAW_SGRAPH:
  5438. /*
  5439.  xstart = given
  5440.  ystart = given
  5441.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  5442. */
  5443. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  5444. var draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  5445. 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);};\
  5446. var ctx = obj.getContext(\"2d\");\
  5447. ctx.font = fontfamily;\
  5448. var minor_opacity = 0.8*opacity;\
  5449. ctx.clearRect(0,0,xsize,ysize);\
  5450. var zero_x = 0.1*xsize;\
  5451. var zero_y = 0.9*ysize;\
  5452. var snor_x;var snor_y;\
  5453. if( xstart != xmin){\
  5454.  snor_x = 0.1*xsize;\
  5455. }\
  5456. else\
  5457. {\
  5458.  snor_x = 0;\
  5459.  xstart = xmin;\
  5460. };\
  5461. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5462. ctx.lineWidth = 2;\
  5463. ctx.beginPath();\
  5464. ctx.moveTo(xsize,zero_y);\
  5465. ctx.lineTo(zero_x,zero_y);\
  5466. ctx.lineTo(zero_x,0);\
  5467. ctx.stroke();\
  5468. ctx.closePath();\
  5469. ctx.beginPath();\
  5470. ctx.moveTo(zero_x,zero_y);\
  5471. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  5472. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  5473. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  5474. ctx.lineTo(zero_x + snor_x,zero_y);\
  5475. ctx.stroke();\
  5476. ctx.closePath();\
  5477. ctx.beginPath();\
  5478. var num = xstart;\
  5479. var flipflop = 1;\
  5480. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  5481. var txtsize;var txt_marge=step_x - 5;\
  5482. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5483.  txtsize = ctx.measureText(num).width;\
  5484.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  5485.  if( flipflop == 1){\
  5486.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  5487.  }\
  5488.  else\
  5489.  {\
  5490.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  5491.  }\
  5492.  num = num + xmajor;\
  5493. };\
  5494. ctx.stroke();\
  5495. ctx.closePath();\
  5496. ctx.lineWidth = 1;\
  5497. ctx.beginPath();\
  5498. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5499.   ctx.moveTo(x,zero_y);\
  5500.   ctx.lineTo(x,0);\
  5501. };\
  5502. ctx.stroke();\
  5503. ctx.closePath();\
  5504. if( xminor > 1){\
  5505.  ctx.lineWidth = 0.5;\
  5506.  ctx.beginPath();\
  5507.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5508.  var minor_step_x = step_x / xminor;\
  5509.  var nx;\
  5510.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  5511.    num = 1;\
  5512.    for(var p = 1 ; p < xminor ; p++){\
  5513.     nx = x + num*minor_step_x;\
  5514.     ctx.moveTo(nx,zero_y);\
  5515.     ctx.lineTo(nx,0);\
  5516.     num++;\
  5517.    };\
  5518.  };\
  5519.  ctx.stroke();\
  5520.  ctx.closePath();\
  5521.  ctx.beginPath();\
  5522.  ctx.lineWidth = 2;\
  5523.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5524.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5525.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  5526.  };\
  5527.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  5528.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  5529.  };\
  5530.  ctx.stroke();\
  5531.  ctx.closePath();\
  5532.  ctx.lineWidth = 0.5;\
  5533. };\
  5534. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  5535. if( ystart != ymin){\
  5536.  snor_y = 0.1*ysize;\
  5537. }\
  5538. else\
  5539. {\
  5540.  snor_y = 0;\
  5541.  ystart = ymin;\
  5542. };\
  5543. ctx.lineWidth = 2;\
  5544. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5545. ctx.beginPath();\
  5546. ctx.moveTo(zero_x,zero_y);\
  5547. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  5548. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  5549. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  5550. ctx.lineTo(zero_x,zero_y - snor_y);\
  5551. ctx.stroke();\
  5552. ctx.closePath();\
  5553. ctx.beginPath();\
  5554. ctx.lineWidth = 1;\
  5555. num = ystart;\
  5556. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  5557. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  5558.  ctx.moveTo(zero_x,y);\
  5559.  ctx.lineTo(xsize,y);\
  5560.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  5561.  num = num + ymajor;\
  5562. };\
  5563. ctx.stroke();\
  5564. ctx.closePath();\
  5565. if( yminor > 1){\
  5566.  ctx.lineWidth = 0.5;\
  5567.  ctx.beginPath();\
  5568.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5569.  var minor_step_y = step_y / yminor;\
  5570.  var ny;\
  5571.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  5572.   num = 1;\
  5573.   for(var p = 1 ;p < yminor;p++){\
  5574.     ny = y + num*minor_step_y;\
  5575.     ctx.moveTo(zero_x,ny);\
  5576.     ctx.lineTo(xsize,ny);\
  5577.     num++;\
  5578.    };\
  5579.  };\
  5580.  ctx.stroke();\
  5581.  ctx.closePath();\
  5582.  ctx.lineWidth = 2;\
  5583.  ctx.beginPath();\
  5584.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5585.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  5586.   ctx.moveTo(zero_x,y);\
  5587.   ctx.lineTo(zero_x+12,y);\
  5588.  };\
  5589.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  5590.   ctx.moveTo(zero_x,y);\
  5591.   ctx.lineTo(zero_x+6,y);\
  5592.  };\
  5593.  ctx.stroke();\
  5594.  ctx.closePath();\
  5595. };\
  5596. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  5597. if( typeof legend%d  !== 'undefined' ){\
  5598.  ctx.globalAlpha = 1.0;\
  5599.  var y_offset = 2*font_size;\
  5600.  var txt;var txt_size;\
  5601.  var x_offset = xsize - 2*font_size;\
  5602.  var l_length = legend%d.length;var barcolor = new Array();\
  5603.  if( typeof legendcolors%d !== 'undefined' ){\
  5604.   for(var p = 0 ; p < l_length ; p++){\
  5605.    barcolor[p] = legendcolors%d[p];\
  5606.   };\
  5607.  }else{\
  5608.   if( barcolor.length == 0 ){\
  5609.    for(var p = 0 ; p < l_length ; p++){\
  5610.     barcolor[p] = stroke_color;\
  5611.    };\
  5612.   };\
  5613.  };\
  5614.  for(var p = 0; p < l_length; p++){\
  5615.   ctx.fillStyle = barcolor[p];\
  5616.   txt = legend%d[p];\
  5617.   txt_size = ctx.measureText(txt).width;\
  5618.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5619.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5620.  };\
  5621. };\
  5622. if( typeof xaxislabel !== 'undefined' ){\
  5623.   ctx.fillStyle = \'#000000\';\
  5624.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  5625.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  5626. };\
  5627. if( typeof yaxislabel !== 'undefined'){\
  5628.   ctx.save();\
  5629.   ctx.fillStyle = \'#000000\';\
  5630.   var txt_size = ctx.measureText(yaxislabel).width;\
  5631.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  5632.   ctx.rotate(-0.5*Math.PI);\
  5633.   ctx.fillText(yaxislabel,0,0);\
  5634.   ctx.restore();\
  5635. };\
  5636. };\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);
  5637.     break;
  5638.  
  5639.     case DRAW_GRID:/* not used for userdraw */
  5640. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  5641. 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){\
  5642. 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);};\
  5643. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  5644. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5645. ctx.save();\
  5646. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5647. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  5648. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5649. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  5650. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  5651. ctx.font = font_family;\
  5652. var barcolor = new Array();\
  5653. var xstep = xsize*xmajor/(xmax - xmin);\
  5654. var ystep = ysize*ymajor/(ymax - ymin);\
  5655. var x2step = xstep / xminor;\
  5656. var y2step = ystep / yminor;\
  5657. var zero_x = x2px(0);;var zero_y = y2px(0);var f_x;var f_y;\
  5658. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;}\
  5659. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;}\
  5660. ctx.beginPath();\
  5661. ctx.lineWidth = line_width;\
  5662. ctx.strokeStyle = stroke_color;\
  5663. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5664. ctx.moveTo(p,0);\
  5665. ctx.lineTo(p,ysize);\
  5666. };\
  5667. for(var p = zero_x ; p > 0; p = p - xstep){\
  5668. ctx.moveTo(p,0);\
  5669. ctx.lineTo(p,ysize);\
  5670. };\
  5671. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5672. ctx.moveTo(0,p);\
  5673. ctx.lineTo(xsize,p);\
  5674. };\
  5675. for(var p = zero_y ; p > 0; p = p - ystep){\
  5676. ctx.moveTo(0,p);\
  5677. ctx.lineTo(xsize,p);\
  5678. };\
  5679. if( typeof xaxislabel !== 'undefined' ){\
  5680. ctx.save();\
  5681. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5682. var corr =  ctx.measureText(xaxislabel).width;\
  5683. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  5684. ctx.restore();\
  5685. };\
  5686. if( typeof yaxislabel !== 'undefined' ){\
  5687. ctx.save();\
  5688. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5689. var corr =  ctx.measureText(yaxislabel).width;\
  5690. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  5691. ctx.rotate(-0.5*Math.PI);\
  5692. ctx.fillText(yaxislabel,0,0);\
  5693. ctx.restore();\
  5694. };\
  5695. ctx.stroke();\
  5696. ctx.closePath();\
  5697. if( use_axis == 1 ){\
  5698. ctx.save();\
  5699. ctx.beginPath();\
  5700. ctx.strokeStyle = stroke_color;\
  5701. ctx.lineWidth = 0.6*line_width;\
  5702. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5703.  ctx.moveTo(p,0);\
  5704.  ctx.lineTo(p,ysize);\
  5705. };\
  5706. for(var p = zero_x ; p > 0; p = p - x2step){\
  5707.  ctx.moveTo(p,0);\
  5708.  ctx.lineTo(p,ysize);\
  5709. };\
  5710. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5711.  ctx.moveTo(0,p);\
  5712.  ctx.lineTo(xsize,p);\
  5713. };\
  5714. for(var p = zero_y ; p > 0; p = p - y2step){\
  5715.  ctx.moveTo(0,p);\
  5716.  ctx.lineTo(xsize,p);\
  5717. };\
  5718. ctx.stroke();\
  5719. ctx.closePath();\
  5720. ctx.beginPath();\
  5721. ctx.lineWidth = 2*line_width;\
  5722. ctx.strokeStyle = axis_color;\
  5723. ctx.moveTo(0,zero_y);\
  5724. ctx.lineTo(xsize,zero_y);\
  5725. ctx.moveTo(zero_x,0);\
  5726. ctx.lineTo(zero_x,ysize);\
  5727. ctx.stroke();\
  5728. ctx.closePath();\
  5729. ctx.lineWidth = line_width+0.5;\
  5730. ctx.beginPath();\
  5731. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5732.  ctx.moveTo(p,zero_y-tics_length);\
  5733.  ctx.lineTo(p,zero_y+tics_length);\
  5734. };\
  5735. for(var p = zero_x ; p > 0; p = p - xstep){\
  5736.  ctx.moveTo(p,zero_y-tics_length);\
  5737.  ctx.lineTo(p,zero_y+tics_length);\
  5738. };\
  5739. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5740.  ctx.moveTo(zero_x-tics_length,p);\
  5741.  ctx.lineTo(zero_x+tics_length,p);\
  5742. };\
  5743. for(var p = zero_y ; p > 0; p = p - ystep){\
  5744.  ctx.moveTo(zero_x-tics_length,p);\
  5745.  ctx.lineTo(zero_x+tics_length,p);\
  5746. };\
  5747. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5748.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5749.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5750. };\
  5751. for(var p = zero_x ; p > 0; p = p - x2step){\
  5752.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5753.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5754. };\
  5755. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5756.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5757.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5758. };\
  5759. for(var p = zero_y ; p > 0; p = p - y2step){\
  5760.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5761.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5762. };\
  5763. ctx.stroke();\
  5764. ctx.closePath();\
  5765. ctx.restore();\
  5766. };\
  5767. if( use_axis_numbering == 1 ){\
  5768. ctx.save();\
  5769. ctx.fillColor = axis_color;\
  5770. ctx.strokeStyle = axis_color;\
  5771. ctx.lineWidth = 2*line_width;\
  5772. ctx.font = font_family;\
  5773. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5774. if( x_strings != null ){\
  5775.  var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5776.  ctx.beginPath();\
  5777.  for(var p = 0 ; p < len ; p = p+2){\
  5778.   var x_nums = x2px(eval(x_strings[p]));\
  5779.   var x_text = x_strings[p+1];\
  5780.   corr = ctx.measureText(x_text).width;\
  5781.   skip = 1.2*corr/xstep;\
  5782.   if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5783.   if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5784.   ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5785.   ctx.moveTo(x_nums,zero_y - tics_length);\
  5786.   ctx.lineTo(x_nums,zero_y + tics_length);\
  5787.  };\
  5788.  ctx.closePath();\
  5789. }\
  5790. else\
  5791. {\
  5792.  skip = 1;cnt = px2x(zero_x);\
  5793.  prec = Math.log(precision)/(Math.log(10));\
  5794.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  5795.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5796.   if(skip == 0 ){\
  5797.    disp_cnt = cnt.toFixed(prec);\
  5798.    corr = ctx.measureText(disp_cnt).width;\
  5799.    skip = parseInt(1.2*corr/xstep);\
  5800.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5801.   }\
  5802.   else\
  5803.   {\
  5804.    skip--;\
  5805.   };\
  5806.   cnt = cnt + xmajor;\
  5807.  };\
  5808.  cnt = px2x(zero_x);skip = 1;\
  5809.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5810.   if(skip == 0 ){\
  5811.    disp_cnt = cnt.toFixed(prec);\
  5812.    corr = ctx.measureText(disp_cnt).width;\
  5813.    skip = parseInt(1.2*corr/xstep);\
  5814.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5815.   }\
  5816.   else\
  5817.   {\
  5818.    skip--;\
  5819.   };\
  5820.   cnt = cnt - xmajor;\
  5821.  };\
  5822. };\
  5823. if( y_strings != null ){\
  5824.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5825.  ctx.beginPath();\
  5826.  for(var p = 0 ; p < len ; p = p+2){\
  5827.   var y_nums = y2px(eval(y_strings[p]));\
  5828.   var y_text = y_strings[p+1];\
  5829.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5830.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5831.   ctx.fillText(y_text,zero_x - corr,y_nums + 0.5*font_size);\
  5832.   ctx.moveTo(zero_x - tics_length,y_nums);\
  5833.   ctx.lineTo(zero_x + tics_length,y_nums);\
  5834.  };\
  5835.  ctx.closePath();\
  5836. }\
  5837. else\
  5838. {\
  5839.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5840.  cnt = px2y(zero_y);skip = 1;\
  5841.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5842.   if(skip == 0 ){\
  5843.    skip = parseInt(1.4*font_size/ystep);\
  5844.    disp_cnt = cnt.toFixed(prec);\
  5845.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5846.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5847.   }\
  5848.   else\
  5849.   {\
  5850.    skip--;\
  5851.   };\
  5852.   cnt = cnt - ymajor;\
  5853.  };\
  5854.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  5855.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5856.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5857.   if(skip == 0 ){\
  5858.    skip = parseInt(1.4*font_size/ystep);\
  5859.    disp_cnt = cnt.toFixed(prec);\
  5860.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5861.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5862.   }\
  5863.   else\
  5864.   {\
  5865.    skip--;\
  5866.   };\
  5867.   cnt = cnt + ymajor;\
  5868.  };\
  5869. };\
  5870. ctx.stroke();\
  5871. ctx.restore();\
  5872. };\
  5873. if( typeof legend0  !== 'undefined' ){\
  5874. ctx.save();\
  5875. ctx.globalAlpha = 1.0;\
  5876. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5877. var y_offset = 2*font_size;\
  5878. var txt;var txt_size;\
  5879. var x_offset = xsize - 2*font_size;\
  5880. var l_length = legend0.length;\
  5881. if( typeof legendcolors0 !== 'undefined' ){\
  5882.  for(var p = 0 ; p < l_length ; p++){\
  5883.    barcolor[p] = legendcolors0[p];\
  5884.  };\
  5885. }\
  5886. else\
  5887. {\
  5888.  if( barcolor.length == 0 ){\
  5889.   for(var p = 0 ; p < l_length ; p++){\
  5890.    barcolor[p] = stroke_color;\
  5891.   };\
  5892.  };\
  5893. };\
  5894. for(var p = 0; p < l_length; p++){\
  5895.  ctx.fillStyle = barcolor[p];\
  5896.  txt = legend0[p];\
  5897.  txt_size = ctx.measureText(txt).width;\
  5898.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  5899.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5900. };\
  5901. ctx.restore();\
  5902. };\
  5903. if( typeof barchart_0  !== 'undefined' ){\
  5904. ctx.save();\
  5905. var num_barcharts = 0;\
  5906. var bar_name = eval('barchart_0');\
  5907. while( typeof bar_name !== 'undefined' ){\
  5908.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  5909. };\
  5910. var bar_width = parseInt(0.8*xstep/(num_barcharts));\
  5911. for(var i=0 ; i< num_barcharts ; i++){\
  5912.  bar_name = eval('barchart_'+i);\
  5913.  var bar_x = new Array();\
  5914.  var bar_y = new Array();\
  5915.  var lb = bar_name.length;\
  5916.  var idx = 0;\
  5917.  var dx = parseInt(0.5*i*bar_width);\
  5918.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  5919.   bar_x[idx] = x2px(bar_name[p]);\
  5920.   bar_y[idx] = y2px(bar_name[p+1]);\
  5921.   barcolor[idx] = bar_name[p+2];\
  5922.   idx++;\
  5923.  };\
  5924.  ctx.globalAlpha = fill_opacity;\
  5925.  ctx.beginPath();\
  5926.  for( var p = 0; p < idx ; p++ ){\
  5927.   ctx.strokeStyle = barcolor[p];\
  5928.   ctx.fillStyle = barcolor[p];\
  5929.   ctx.rect(bar_x[p]-0.4*xstep+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  5930.  };\
  5931.  ctx.fill();\
  5932.  ctx.stroke();\
  5933.  ctx.closePath();\
  5934. };\
  5935. ctx.restore();\
  5936. };\
  5937. if( typeof linegraph_0 !== 'undefined' ){\
  5938. ctx.save();\
  5939. ctx.globalAlpha = 1.0;\
  5940. var i = 0;\
  5941. var line_name = eval('linegraph_'+i);\
  5942. while ( typeof line_name !== 'undefined' ){\
  5943.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5944.  ctx.lineWidth = parseInt(line_name[1]);\
  5945.  if(line_name[2] == \"1\"){\
  5946.   var d1 = parseInt(line_name[3]);\
  5947.   var d2 = parseInt(line_name[4]);\
  5948.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  5949.  }\
  5950.  else\
  5951.  {\
  5952.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5953.  if(ctx.mozDash){ctx.mozDash = null;}\
  5954.  };\
  5955.  var data_x = new Array();\
  5956.  var data_y = new Array();\
  5957.  var lb = line_name.length;\
  5958.  var idx = 0;\
  5959.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5960.   data_x[idx] = x2px(line_name[p]);\
  5961.   data_y[idx] = y2px(line_name[p+1]);\
  5962.   idx++;\
  5963.  };\
  5964.  for( var p = 0; p < idx ; p++){\
  5965.   ctx.beginPath();\
  5966.   ctx.moveTo(data_x[p],data_y[p]);\
  5967.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5968.   ctx.stroke();\
  5969.   ctx.closePath();\
  5970.  };\
  5971.  i++;\
  5972.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  5973. };\
  5974. ctx.restore();\
  5975. };\
  5976. return;\
  5977. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5978.     break;
  5979.  
  5980.     case DRAW_PIECHART:
  5981. fprintf(js_include_file,"\n<!-- draw piecharts -->\n\
  5982. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family){\
  5983. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5984.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5985. }\
  5986. else\
  5987. {\
  5988.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5989. };\
  5990. var ld = data_color_list.length;\
  5991. var sum = 0;\
  5992. var idx = 0;\
  5993. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  5994. var colors = new Array();\
  5995. var data = new Array();\
  5996. for(var p = 0;p < ld; p = p + 2){\
  5997.  data[idx] = parseFloat(data_color_list[p]);\
  5998.  sum = sum + data[idx];\
  5999.  colors[idx] = data_color_list[p+1];\
  6000.  idx++;\
  6001. };\
  6002. var ctx = obj.getContext(\"2d\");\
  6003. ctx.save();\
  6004. var angle;\
  6005. var angle_end = 0;\
  6006. var offset = Math.PI / 2;\
  6007. ctx.globalAlpha = fill_opacity;\
  6008. for(var p=0; p < idx; p++){\
  6009.  ctx.beginPath();\
  6010.  ctx.fillStyle = colors[p];\
  6011.  ctx.moveTo(x_center,y_center);\
  6012.  angle = Math.PI * (2 * data[p] / sum);\
  6013.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  6014.  ctx.lineTo(x_center, y_center);\
  6015.  ctx.fill();\
  6016.  ctx.closePath();\
  6017.  angle_end  = angle_end + angle;\
  6018. };\
  6019. if(typeof legend0 !== 'undefined'){\
  6020.  var legenda = eval(\"legend\"+legend_cnt);\
  6021.  ctx.globalAlpha = 1.0;\
  6022.  ctx.font = font_family;\
  6023.  var y_offset = font_size; \
  6024.  var x_offset = 0;\
  6025.  var txt;var txt_size;\
  6026.  for(var p = 0; p < idx; p++){\
  6027.   ctx.fillStyle = colors[p];\
  6028.   txt = legenda[p];\
  6029.   txt_size = ctx.measureText(txt).width;\
  6030.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  6031.   ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  6032.   y_offset = parseInt(y_offset + 1.5*font_size);\
  6033.  };\
  6034. };\
  6035. ctx.restore();\
  6036. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6037.  
  6038.     break;
  6039.     case DRAW_ARCS:
  6040. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  6041. 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){\
  6042. ctx.save();\
  6043. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  6044. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  6045. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  6046. if(end < start){var tmp = end;end = start;start=tmp;};\
  6047. start = 360 - start;\
  6048. end = 360 - end;\
  6049. ctx.lineWidth = line_width;\
  6050. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6051. ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  6052. ctx.beginPath();\
  6053. ctx.moveTo(xc,yc);\
  6054. ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  6055. ctx.lineTo(xc,yc);\
  6056. ctx.closePath();\
  6057. if( use_filled == 1 ){\
  6058.  ctx.fill();\
  6059. };\
  6060. ctx.stroke();\
  6061. ctx.restore();\
  6062. };");
  6063.  
  6064.     break;
  6065.     case DRAW_CENTERSTRING:
  6066. fprintf(js_include_file,"\n<!-- draw centerstring -->\n\
  6067. var draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  6068. var obj;\
  6069. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6070.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6071. }\
  6072. else\
  6073. {\
  6074.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6075. };\
  6076. var ctx = obj.getContext(\"2d\");\
  6077. ctx.save();\
  6078. ctx.font = font_family;\
  6079. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6080. var stringwidth = ctx.measureText(text).width;\
  6081. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  6082. ctx.fillText(text,x,y2px(y));\
  6083. return;\
  6084. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6085.     break;
  6086.     case DRAW_TEXTS:
  6087. fprintf(js_include_file,"\n<!-- draw text -->\n\
  6088. 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){\
  6089.  var obj;\
  6090.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6091.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6092.  }\
  6093.  else\
  6094.  {\
  6095.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  6096.  };\
  6097.  var ctx = obj.getContext(\"2d\");\
  6098.  if(angle2 == 0 && angle != 0){\
  6099.   ctx.save();\
  6100.   if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6101.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6102.  };\
  6103.  if( font_family.indexOf('px') != null ){\
  6104.   ctx.font = font_family;\
  6105.  }\
  6106.  else\
  6107.  {\
  6108.   ctx.font = font_family;\
  6109.  };\
  6110.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6111.  if(angle2 != 0){\
  6112.   ctx.save();\
  6113.   ctx.translate(x,y);\
  6114.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  6115.   ctx.fillText(text,0,0);\
  6116.   ctx.restore();\
  6117.  }else{ctx.fillText(text,x,y);};\
  6118. ctx.restore();\
  6119. return;\
  6120. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6121.     break;
  6122.     case DRAW_CURVE:
  6123. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  6124. 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){\
  6125. var obj;\
  6126. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6127.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6128. }\
  6129. else\
  6130. {\
  6131.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6132. };\
  6133. var ctx = obj.getContext(\"2d\");\
  6134. ctx.save();\
  6135. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6136. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6137. ctx.beginPath();ctx.lineWidth = line_width;\
  6138. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  6139. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6140. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  6141. for(var p = 1 ; p < x_points.length ; p++){\
  6142.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  6143.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  6144.  }\
  6145.  else\
  6146.  {\
  6147.   ctx.stroke();\
  6148.   ctx.beginPath();\
  6149.   p++;\
  6150.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  6151.  };\
  6152. };\
  6153. ctx.stroke();\
  6154. ctx.restore();\
  6155. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6156.     break;
  6157.  
  6158.     case DRAW_INPUTS:
  6159. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  6160. var draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  6161. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6162. var input = document.createElement(\"input\");\
  6163. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6164. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6165. input.setAttribute(\"size\",size);\
  6166. input.setAttribute(\"value\",value);\
  6167. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  6168. canvas_div.appendChild(input);};");
  6169.     break;
  6170.  
  6171.     case DRAW_TEXTAREAS:
  6172. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  6173. var draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  6174. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6175. var textarea = document.createElement(\"textarea\");\
  6176. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6177. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6178. textarea.setAttribute(\"cols\",cols);\
  6179. textarea.setAttribute(\"rows\",rows);\
  6180. textarea.value = value;\
  6181. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  6182. canvas_div.appendChild(textarea);};");
  6183.     break;
  6184.  
  6185. case DRAW_PIXELS:
  6186. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  6187. var draw_setpixel = function(x,y,color,opacity,pixelsize){\
  6188. var canvas = create_canvas%d(10,xsize,ysize);\
  6189. var d = 0.5*pixelsize;\
  6190. var ctx = canvas.getContext(\"2d\");\
  6191. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  6192. ctx.clearRect(0,0,xsize,ysize);\
  6193. for(var p=0; p<x.length;p++){\
  6194.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  6195. };\
  6196. ctx.fill();ctx.stroke();\
  6197. };",canvas_root_id);
  6198. break;
  6199.  
  6200. case DRAW_CLOCK:
  6201. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  6202. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  6203. var clock_ctx = clock_canvas.getContext(\"2d\");\
  6204. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  6205. clock_ctx.clearRect(xc - radius,yc - radius,2*radius,2*radius);\
  6206. clock_ctx.save();\
  6207. clock_ctx.globalAlpha = clock_bg_opacity;\
  6208. this.type = type || 0;\
  6209. this.interaction = interaction || 0;\
  6210. this.H = H;\
  6211. this.M = M;\
  6212. this.S = S;\
  6213. if(this.S == -1){this.S = 59;this.M = this.M - 1;};\
  6214. if(this.M == -1){this.M = 59;this.H = this.H - 1;};\
  6215. if(this.H == -1){this.H = 11;};\
  6216. this.xc = xc || xsize/2;\
  6217. this.yc = yc || ysize/2;\
  6218. this.radius = radius || xsize/4;\
  6219. var font_size = parseInt(0.2*this.radius);\
  6220. this.H_color = h_color || \"blue\";\
  6221. this.M_color = m_color || \"blue\";\
  6222. this.S_color = s_color || \"blue\";\
  6223. this.fg_color = fg_color || \"red\";\
  6224. this.bg_color = bg_color || \"white\";\
  6225. clock_ctx.translate(this.xc,this.yc);\
  6226. clock_ctx.beginPath();\
  6227. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  6228. clock_ctx.fillStyle = this.bg_color;\
  6229. clock_ctx.fill();\
  6230. clock_ctx.closePath();\
  6231. clock_ctx.beginPath();\
  6232. clock_ctx.font = font_size+\"px Arial\";\
  6233. clock_ctx.fillStyle = this.fg_color;\
  6234. clock_ctx.textAlign = \"center\";\
  6235. clock_ctx.textBaseline = 'middle';\
  6236. var angle;var x1,y1,x2,y2;\
  6237. var angle_cos;var angle_sin;\
  6238. clock_ctx.globalAlpha = clock_fg_opacity;\
  6239. switch(type){\
  6240. case 0:clock_ctx.beginPath();\
  6241. for(var p = 1; p <= 12 ; p++){\
  6242.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6243.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6244.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6245.  clock_ctx.moveTo(x1,y1);\
  6246.  clock_ctx.lineTo(x2,y2);\
  6247. };\
  6248. for(var p = 1; p <= 60 ; p++){\
  6249.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6250.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6251.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6252.  clock_ctx.moveTo(x1,y1);\
  6253.  clock_ctx.lineTo(x2,y2);\
  6254. };\
  6255. clock_ctx.closePath();\
  6256. clock_ctx.stroke();\
  6257. break;\
  6258. case 1:\
  6259. 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;\
  6260. case 2:\
  6261. 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);};\
  6262. clock_ctx.beginPath();\
  6263. for(var p = 1; p <= 12 ; p++){\
  6264.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6265.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6266.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6267.  clock_ctx.moveTo(x1,y1);\
  6268.  clock_ctx.lineTo(x2,y2);\
  6269. };\
  6270. for(var p = 1; p <= 60 ; p++){\
  6271.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6272.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6273.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6274.  clock_ctx.moveTo(x1,y1);\
  6275.  clock_ctx.lineTo(x2,y2);\
  6276. };\
  6277. clock_ctx.closePath();\
  6278. clock_ctx.stroke();\
  6279. break;\
  6280. };\
  6281. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  6282. clock_ctx.rotate(angle);\
  6283. clock_ctx.beginPath();\
  6284. clock_ctx.moveTo(-3, -2);\
  6285. clock_ctx.lineTo(-3, 2);\
  6286. clock_ctx.lineTo(this.radius * 0.7, 1);\
  6287. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  6288. clock_ctx.fillStyle = this.H_color;\
  6289. clock_ctx.fill();\
  6290. clock_ctx.rotate(-angle);\
  6291. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  6292. clock_ctx.rotate(angle);\
  6293. clock_ctx.beginPath();\
  6294. clock_ctx.moveTo(-3, -2);\
  6295. clock_ctx.lineTo(-3, 2);\
  6296. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  6297. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  6298. clock_ctx.fillStyle = this.M_color;\
  6299. clock_ctx.fill();\
  6300. clock_ctx.rotate(-angle);\
  6301. angle = (this.S - 15) * 2 * Math.PI / 60;\
  6302. clock_ctx.rotate(angle);\
  6303. clock_ctx.beginPath();\
  6304. clock_ctx.moveTo(0,0);\
  6305. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  6306. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  6307. clock_ctx.strokeStyle = this.S_color;\
  6308. clock_ctx.stroke();\
  6309. clock_ctx.restore();\
  6310. };",canvas_root_id,CLOCK_CANVAS);
  6311. break;
  6312.  
  6313. case DRAW_LATTICE:
  6314. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  6315. 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){\
  6316. var obj;\
  6317. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6318.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6319. }\
  6320. else\
  6321. {\
  6322.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6323. };\
  6324. var ctx = obj.getContext(\"2d\");\
  6325. ctx.save();\
  6326. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6327. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6328. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6329. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6330. var radius = line_width;\
  6331. var x = 0;\
  6332. var y = 0;\
  6333. var x_step_px = xsize/(xmax-xmin);\
  6334. var y_step_px = ysize/(ymax-ymin);\
  6335. var xv1 = dx1*x_step_px;\
  6336. var yv1 = dy1*y_step_px;\
  6337. var xv2 = dx2*x_step_px;\
  6338. var yv2 = dy2*y_step_px;\
  6339. for(var p = 0; p < n1 ;p++){\
  6340.  x = p*xv1 + x0;\
  6341.  y = p*yv1 + y0;\
  6342.  for(var c = 0; c < n2 ; c++){\
  6343.   ctx.beginPath();\
  6344.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  6345.   ctx.fill();\
  6346.   ctx.stroke();\
  6347.   ctx.closePath();\
  6348.  };\
  6349. };\
  6350. ctx.restore();\
  6351. return;\
  6352. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6353.     break;
  6354. case DRAW_XYLOGSCALE:
  6355. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  6356. 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){\
  6357. var obj;\
  6358. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6359.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6360. }\
  6361. else\
  6362. {\
  6363.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6364. };\
  6365. var ctx = obj.getContext(\"2d\");\
  6366. ctx.clearRect(0,0,xsize,ysize);\
  6367. ctx.save();\
  6368. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  6369. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6370. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6371. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6372. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6373. if(use_axis_numbering == 1){\
  6374.  ctx.font = font_family;\
  6375.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  6376.  ymarge = parseInt(1.5*font_size);\
  6377.  ctx.save();\
  6378.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6379.  ctx.rect(0,0,xmarge,ysize);\
  6380.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6381.  ctx.fill();\
  6382.  ctx.restore();\
  6383. }else{xmarge = 0;ymarge = 0;};\
  6384. if( typeof xaxislabel !== 'undefined' ){\
  6385.  ctx.save();\
  6386.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6387.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6388.  corr =  ctx.measureText(xaxislabel).width;\
  6389.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6390.  ctx.restore();\
  6391. };\
  6392. if( typeof yaxislabel !== 'undefined' ){\
  6393.  ctx.save();\
  6394.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6395.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6396.  corr = ctx.measureText(yaxislabel).width;\
  6397.  ctx.translate(xmarge+font_size,corr+font_size);\
  6398.  ctx.rotate(-0.5*Math.PI);\
  6399.  ctx.fillText(yaxislabel,0,0);\
  6400.  ctx.restore();\
  6401. };\
  6402. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6403. ctx.lineWidth = line_width;\
  6404. for(var p = x_min; p <= x_max ; p++){\
  6405.  num = Math.pow(xlogbase,p);\
  6406.  for(var i = 1 ; i < xlogbase ; i++){\
  6407.   x_e = x2px(i*num);\
  6408.   if( i == 1 ){\
  6409.    ctx.lineWidth = line_width;\
  6410.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6411.    if( use_axis_numbering == 1 && p > x_min){\
  6412.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6413.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6414.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6415.    };\
  6416.   }else{\
  6417.    ctx.lineWidth = 0.2*line_width;\
  6418.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6419.   };\
  6420.   if( x_e >= xmarge ){\
  6421.    ctx.beginPath();\
  6422.    ctx.moveTo(x_e,0);\
  6423.    ctx.lineTo(x_e,ysize - ymarge);\
  6424.    ctx.stroke();\
  6425.    ctx.closePath();\
  6426.   };\
  6427.  };\
  6428. };\
  6429. for(var p = y_min; p <= y_max ; p++){\
  6430.  num = Math.pow(ylogbase,p);\
  6431.  for(var i = 1 ; i < ylogbase ; i++){\
  6432.   y_e = y2px(i*num);\
  6433.   if( i == 1 ){\
  6434.    ctx.lineWidth = line_width;\
  6435.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6436.    if( use_axis_numbering == 1 && p > y_min){\
  6437.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6438.    };\
  6439.   }else{\
  6440.    ctx.lineWidth = 0.2*line_width;\
  6441.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6442.   };\
  6443.   ctx.beginPath();\
  6444.   ctx.moveTo(xmarge,y_e);\
  6445.   ctx.lineTo(xsize,y_e);\
  6446.   ctx.stroke();\
  6447.   ctx.closePath();\
  6448.  };\
  6449. };\
  6450. ctx.restore();\
  6451. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6452.     break;
  6453.  
  6454. case DRAW_XLOGSCALE:
  6455. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  6456. 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){\
  6457. var obj;\
  6458. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6459.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6460. }\
  6461. else\
  6462. {\
  6463.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6464. };\
  6465. var ctx = obj.getContext(\"2d\");\
  6466. ctx.clearRect(0,0,xsize,ysize);\
  6467. ctx.save();\
  6468. ctx.lineWidth = line_width;\
  6469. var prec = Math.log(precision)/Math.log(10);\
  6470. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6471. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6472. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  6473. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  6474. if(use_axis_numbering == 1){\
  6475.  ctx.font = font_family;\
  6476.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  6477.  ymarge = parseInt(1.5*font_size);\
  6478.  ctx.save();\
  6479.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6480.  ctx.rect(0,0,xmarge,ysize);\
  6481.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6482.  ctx.fill();\
  6483.  ctx.restore();\
  6484. }else{xmarge = 0;ymarge = 0;};\
  6485. if( typeof xaxislabel !== 'undefined' ){\
  6486.  ctx.save();\
  6487.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6488.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6489.  corr =  ctx.measureText(xaxislabel).width;\
  6490.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6491.  ctx.restore();\
  6492. };\
  6493. if( typeof yaxislabel !== 'undefined' ){\
  6494.  ctx.save();\
  6495.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6496.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6497.  corr = ctx.measureText(yaxislabel).width;\
  6498.  ctx.translate(xmarge+font_size,corr+font_size);\
  6499.  ctx.rotate(-0.5*Math.PI);\
  6500.  ctx.fillText(yaxislabel,0,0);\
  6501.  ctx.restore();\
  6502. };\
  6503. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6504. ctx.lineWidth = line_width;\
  6505. for(var p = x_min; p <= x_max ; p++){\
  6506.  num = Math.pow(xlogbase,p);\
  6507.  for(var i = 1 ; i < xlogbase ; i++){\
  6508.   x_e = x2px(i*num);\
  6509.   if( i == 1 ){\
  6510.     ctx.lineWidth = line_width;\
  6511.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6512.    if( use_axis_numbering == 1 && p > x_min ){\
  6513.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6514.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6515.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6516.    };\
  6517.   }else{\
  6518.    ctx.lineWidth = 0.2*line_width;\
  6519.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6520.   };\
  6521.   if( x_e >= xmarge ){\
  6522.    ctx.beginPath();\
  6523.    ctx.moveTo(x_e,0);\
  6524.    ctx.lineTo(x_e,ysize - ymarge);\
  6525.    ctx.stroke();\
  6526.    ctx.closePath();\
  6527.   };\
  6528.  };\
  6529. };\
  6530. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  6531. var minor_step = stepy / yminor;\
  6532. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  6533.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6534.  ctx.lineWidth = line_width;\
  6535.  ctx.beginPath();\
  6536.  ctx.moveTo(xmarge,y);\
  6537.  ctx.lineTo(xsize,y);\
  6538.  ctx.stroke();\
  6539.  ctx.closePath();\
  6540.  if( use_axis_numbering == 1){\
  6541.   ytxt = (px2y(y)).toFixed(prec);\
  6542.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  6543.  };\
  6544.  for(var dy = 1 ; dy < yminor ; dy++){\
  6545.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6546.   ctx.lineWidth = 0.2*line_width;\
  6547.   ctx.beginPath();\
  6548.   ctx.moveTo(xmarge,y+dy*minor_step);\
  6549.   ctx.lineTo(xsize,y+dy*minor_step);\
  6550.   ctx.stroke();\
  6551.   ctx.closePath();\
  6552.  };\
  6553. };\
  6554. ctx.restore();\
  6555. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6556.     break;
  6557. case DRAW_YLOGSCALE:
  6558. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  6559. 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){\
  6560. var obj;\
  6561. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6562.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6563. }\
  6564. else\
  6565. {\
  6566.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6567. };\
  6568. var ctx = obj.getContext(\"2d\");\
  6569. ctx.clearRect(0,0,xsize,ysize);\
  6570. ctx.save();\
  6571. ctx.lineWidth = line_width;\
  6572. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6573. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6574. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;var xmarge;var ymarge;\
  6575. if(use_axis_numbering == 1){\
  6576.  ctx.font = font_family;\
  6577.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  6578.  ymarge = 2*font_size;\
  6579.  ctx.save();\
  6580.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6581.  ctx.rect(0,0,xmarge,ysize);\
  6582.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6583.  ctx.fill();\
  6584.  ctx.restore();\
  6585. }else{xmarge = 0;ymarge = 0;};\
  6586. if( typeof xaxislabel !== 'undefined' ){\
  6587.  ctx.save();\
  6588.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6589.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6590.  corr =  ctx.measureText(xaxislabel).width;\
  6591.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6592.  ctx.restore();\
  6593. };\
  6594. if( typeof yaxislabel !== 'undefined' ){\
  6595.  ctx.save();\
  6596.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6597.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6598.  corr = ctx.measureText(yaxislabel).width;\
  6599.  ctx.translate(xmarge+font_size,corr+font_size);\
  6600.  ctx.rotate(-0.5*Math.PI);\
  6601.  ctx.fillText(yaxislabel,0,0);\
  6602.  ctx.restore();\
  6603. };\
  6604. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6605. ctx.lineWidth = line_width;\
  6606. for(var p = y_min; p <= y_max ; p++){\
  6607.  num = Math.pow(ylogbase,p);\
  6608.  for(var i = 1 ; i < ylogbase ; i++){\
  6609.   y_e = y2px(i*num);\
  6610.   if( i == 1 ){\
  6611.    ctx.lineWidth = line_width;\
  6612.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6613.    if( use_axis_numbering == 1 && p > y_min){\
  6614.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6615.    };\
  6616.   }else{\
  6617.    ctx.lineWidth = 0.2*line_width;\
  6618.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6619.   };\
  6620.   ctx.beginPath();\
  6621.   ctx.moveTo(xmarge,y_e);\
  6622.   ctx.lineTo(xsize,y_e);\
  6623.   ctx.stroke();\
  6624.   ctx.closePath();\
  6625.  };\
  6626. };\
  6627. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  6628. var minor_step = stepx / xminor;\
  6629. var prec = Math.log(precision)/Math.log(10);\
  6630. var xtxt;var corr;var flip = 0;\
  6631. for(var x = stepx ; x < xsize ; x = x + stepx){\
  6632.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6633.  ctx.lineWidth = line_width;\
  6634.  ctx.beginPath();\
  6635.  ctx.moveTo(x,ysize-ymarge);\
  6636.  ctx.lineTo(x,0);\
  6637.  ctx.stroke();\
  6638.  ctx.closePath();\
  6639.  if( use_axis_numbering == 1){\
  6640.   xtxt = (px2x(x)).toFixed(prec);\
  6641.   corr = 0.5*(ctx.measureText(xtxt).width);\
  6642.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  6643.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  6644.  };\
  6645.  for(var dx = 1 ; dx < xminor ; dx++){\
  6646.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6647.   ctx.lineWidth = 0.2*line_width;\
  6648.   ctx.beginPath();\
  6649.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  6650.   ctx.lineTo(x+dx*minor_step,0);\
  6651.   ctx.stroke();\
  6652.   ctx.closePath();\
  6653.  };\
  6654. };\
  6655. ctx.restore();\
  6656. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6657.     break;
  6658.     default:break;
  6659.    }
  6660.   }
  6661.  }
  6662.   return;
  6663. }
  6664.  
  6665. void check_string_length(int L){
  6666.  if(L<1 || L > MAX_BUFFER-1){
  6667.   canvas_error("problem with your arguments to command...");
  6668.  }
  6669.  return;
  6670. }
  6671.  
  6672.  
  6673. int get_token(FILE *infile){
  6674.         int     c,i=0;
  6675.         char    temp[MAX_INT], *input_type;
  6676.         char    *line="line",
  6677.         *audio="audio",
  6678.         *blink="blink",
  6679.         *arrowhead="arrowhead",
  6680.         *crosshairsize="crosshairsize",
  6681.         *crosshair="crosshair",
  6682.         *crosshairs="crosshairs",
  6683.         *audioobject="audioobject",
  6684.         *style="style",
  6685.         *mouse="mouse",
  6686.         *mousex="mousex",
  6687.         *mousey="mousey",
  6688.         *mouse_display="display",
  6689.         *mouse_degree="mouse_degree",
  6690.         *userdraw="userdraw",
  6691.         *highlight="highlight",
  6692.         *http="http",
  6693.         *rays="rays",
  6694.         *dashtype="dashtype",
  6695.         *dashed="dashed",
  6696.         *filled="filled",
  6697.         *lattice="lattice",
  6698.         *parallel="parallel",
  6699.         *segment="segment",
  6700.         *dsegment="dsegment",
  6701.         *seg="seg",
  6702.         *bgimage="bgimage",
  6703.         *bgcolor="bgcolor",
  6704.         *strokecolor="strokecolor",
  6705.         *backgroundimage="backgroundimage",
  6706.         *text="text",
  6707.         *textup="textup",
  6708.         *mouseprecision="mouseprecision",
  6709.         *precision="precision",
  6710.         *plotsteps="plotsteps",
  6711.         *plotstep="plotstep",
  6712.         *tsteps="tsteps",
  6713.         *curve="curve",
  6714.         *dcurve="dcurve",
  6715.         *plot="plot",
  6716.         *dplot="dplot",
  6717.         *levelcurve="levelcurve",
  6718.         *fontsize="fontsize",
  6719.         *fontcolor="fontcolor",
  6720.         *axis="axis",
  6721.         *axisnumbering="axisnumbering",
  6722.         *axisnumbers="axisnumbers",
  6723.         *arrow="arrow",
  6724.         *darrow="darrow",
  6725.         *arrow2="arrow2",
  6726.         *darrow2="darrow2",
  6727.         *zoom="zoom",
  6728.         *grid="grid",
  6729.         *hline="hline",
  6730.         *dhline="dhline",
  6731.         *drag="drag",
  6732.         *horizontalline="horizontalline",
  6733.         *vline="vline",
  6734.         *dvline="dvline",
  6735.         *verticalline="verticalline",
  6736.         *triangle="triangle",
  6737.         *ftriangle="ftriangle",
  6738.         *mathml="mathml",
  6739.         *html="html",
  6740.         *input="input",
  6741.         *clearbutton="clearbutton",
  6742.         *inputstyle="inputstyle",
  6743.         *textarea="textarea",
  6744.         *trange="trange",
  6745.         *ranget="ranget",
  6746.         *xrange="xrange",
  6747.         *yrange="yrange",
  6748.         *rangex="rangex",
  6749.         *rangey="rangey",
  6750.         *polyline="polyline",
  6751.         *lines="lines",
  6752.         *poly="poly",
  6753.         *polygon="polygon",
  6754.         *fpolygon="fpolygon",
  6755.         *fpoly="fpoly",
  6756.         *filledpoly="filledpoly",
  6757.         *filledpolygon="filledpolygon",
  6758.         *rect="rect",
  6759.         *frect="frect",
  6760.         *rectangle="rectangle",
  6761.         *frectangle="frectangle",
  6762.         *square="square",
  6763.         *fsquare="fsquare",
  6764.         *dline="dline",
  6765.         *arc="arc",
  6766.         *filledarc="filledarc",
  6767.         *size="size",
  6768.         *string="string",
  6769.         *stringup="stringup",
  6770.         *copy="copy",
  6771.         *copyresized="copyresized",
  6772.         *opacity="opacity",
  6773.         *transparent="transparent",
  6774.         *fill="fill",
  6775.         *point="point",
  6776.         *points="points",
  6777.         *linewidth="linewidth",
  6778.         *circle="circle",
  6779.         *fcircle="fcircle",
  6780.         *disk="disk",
  6781.         *comment="#",
  6782.         *end="end",
  6783.         *ellipse="ellipse",
  6784.         *fellipse="fellipse",
  6785.         *rotate="rotate",
  6786.         *affine="affine",
  6787.         *killaffine="killaffine",
  6788.         *fontfamily="fontfamily",
  6789.         *fillcolor="fillcolor",
  6790.         *clicktile="clicktile",
  6791.         *clicktile_colors="clicktile_colors",
  6792.         *translation="translation",
  6793.         *translate="translate",
  6794.         *killtranslation="killtranslation",
  6795.         *killtranslate="killtranslate",
  6796.         *onclick="onclick",
  6797.         *roundrect="roundrect",
  6798.         *froundrect="froundrect",
  6799.         *roundrectangle="roundrectangle",
  6800.         *patternfill="patternfill",
  6801.         *hatchfill="hatchfill",
  6802.         *diafill="diafill",
  6803.         *diamondfill="diamondfill",
  6804.         *dotfill="dotfill",
  6805.         *gridfill="gridfill",
  6806.         *imagefill="imagefill",
  6807.         *xlogbase="xlogbase",
  6808.         *ylogbase="ylogbase",
  6809.         *xlogscale="xlogscale",
  6810.         *ylogscale="ylogscale",
  6811.         *xylogscale="xylogscale",
  6812.         *intooltip="intooltip",
  6813.         *replyformat="replyformat",
  6814.         *floodfill="floodfill",
  6815.         *filltoborder="filltoborder",
  6816.         *clickfill="clickfill",
  6817.         *setpixel="setpixel",
  6818.         *pixels="pixels",
  6819.         *pixelsize="pixelsize",
  6820.         *clickfillmarge="clickfillmarge",
  6821.         *xaxis="xaxis",
  6822.         *yaxis="yaxis",
  6823.         *xaxistext="xaxistext",
  6824.         *yaxistext="yaxistext",
  6825.         *piechart="piechart",
  6826.         *legend="legend",
  6827.         *legendcolors="legendcolors",
  6828.         *xlabel="xlabel",
  6829.         *ylabel="ylabel",
  6830.         *barchart="barchart",
  6831.         *linegraph="linegraph",
  6832.         *clock="clock",
  6833.         *animate="animate",
  6834.         *video="video",
  6835.         *status="status",
  6836.         *nostatus="nostatus",
  6837.         *snaptogrid="snaptogrid",
  6838.         *xsnaptogrid="xsnaptogrid",
  6839.         *ysnaptogrid="ysnaptogrid",
  6840.         *userinput_xy="userinput_xy",
  6841.         *userinput_function="userinput_function",
  6842.         *usertextarea_xy="usertextarea_xy",
  6843.         *userinput="userinput",
  6844.         *jsmath="jsmath",
  6845.         *trace_jscurve="trace_jscurve",
  6846.         *setlimits="setlimits",
  6847.         *jscurve="jscurve",
  6848.         *jsplot="jsplot",
  6849.         *sgraph="sgraph",
  6850.         *title="title",
  6851.         *centerstring="centerstring",
  6852.         *xunit="xunit",
  6853.         *yunit="yunit",
  6854.         *slider="slider",
  6855.         *killslider="killslider",
  6856.         *angle="angle",
  6857.         *halfline="halfline",
  6858.         *demiline="demiline",
  6859.         *functionlabel="functionlabel";
  6860.  
  6861.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6862.             if( i == 0 && (c == ' ' || c == '\t') ){
  6863.         continue; /* white spaces or tabs allowed before first command identifier */
  6864.             }
  6865.             else
  6866.             {
  6867.         if( c == ' ' || c == '\t' ){
  6868.             break;
  6869.         }
  6870.         else
  6871.         {
  6872.             temp[i] = c;
  6873.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6874.             i++;
  6875.         }
  6876.             }
  6877.             if(temp[0] == '#') break;
  6878.         }
  6879.         if (c == EOF) finished = 1;
  6880.  
  6881.         if (c == '\n' || c == '\r') {
  6882.         line_number++;
  6883.         if (i == 0) { return EMPTY; }
  6884.         } else if (c == EOF) {
  6885.         return 0;
  6886.         }
  6887.  
  6888.         temp[i]='\0';
  6889.         input_type=(char*)my_newmem(strlen(temp));
  6890.         snprintf(input_type,sizeof(temp),"%s",temp);
  6891.  
  6892.         if( strcmp(input_type, size) == 0 ){
  6893.         free(input_type);
  6894.         return SIZE;
  6895.         }
  6896.         if( strcmp(input_type, xrange) == 0 ){
  6897.         free(input_type);
  6898.         return XRANGE;
  6899.         }
  6900.         if( strcmp(input_type, rangex) == 0 ){
  6901.         free(input_type);
  6902.         return XRANGE;
  6903.         }
  6904.         if( strcmp(input_type, trange) == 0 ){
  6905.         free(input_type);
  6906.         return TRANGE;
  6907.         }
  6908.         if( strcmp(input_type, ranget) == 0 ){
  6909.         free(input_type);
  6910.         return TRANGE;
  6911.         }
  6912.         if( strcmp(input_type, yrange) == 0 ){
  6913.         free(input_type);
  6914.         return YRANGE;
  6915.         }
  6916.         if( strcmp(input_type, rangey) == 0 ){
  6917.         free(input_type);
  6918.         return YRANGE;
  6919.         }
  6920.         if( strcmp(input_type, linewidth) == 0 ){
  6921.         free(input_type);
  6922.         return LINEWIDTH;
  6923.         }
  6924.         if( strcmp(input_type, dashed) == 0 ){
  6925.         free(input_type);
  6926.         return DASHED;
  6927.         }
  6928.         if( strcmp(input_type, dashtype) == 0 ){
  6929.         free(input_type);
  6930.         return DASHTYPE;
  6931.         }
  6932.         if( strcmp(input_type, axisnumbering) == 0 ){
  6933.         free(input_type);
  6934.         return AXIS_NUMBERING;
  6935.         }
  6936.         if( strcmp(input_type, axisnumbers) == 0 ){
  6937.         free(input_type);
  6938.         return AXIS_NUMBERING;
  6939.         }
  6940.         if( strcmp(input_type, axis) == 0 ){
  6941.         free(input_type);
  6942.         return AXIS;
  6943.         }
  6944.         if( strcmp(input_type, grid) == 0 ){
  6945.         free(input_type);
  6946.         return GRID;
  6947.         }
  6948.         if( strcmp(input_type, parallel) == 0 ){
  6949.         free(input_type);
  6950.         return PARALLEL;
  6951.         }
  6952.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6953.         free(input_type);
  6954.         return HLINE;
  6955.         }
  6956.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6957.         free(input_type);
  6958.         return VLINE;
  6959.         }
  6960.         if( strcmp(input_type, line) == 0 ){
  6961.         free(input_type);
  6962.         return LINE;
  6963.         }
  6964.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6965.         free(input_type);
  6966.         return SEGMENT;
  6967.         }
  6968.         if( strcmp(input_type, dsegment) == 0 ){
  6969.         free(input_type);
  6970.         use_dashed = TRUE;
  6971.         return SEGMENT;
  6972.         }
  6973.         if( strcmp(input_type, crosshairsize) == 0 ){
  6974.         free(input_type);
  6975.         return CROSSHAIRSIZE;
  6976.         }
  6977.         if( strcmp(input_type, arrowhead) == 0 ){
  6978.         free(input_type);
  6979.         return ARROWHEAD;
  6980.         }
  6981.         if( strcmp(input_type, crosshairs) == 0 ){
  6982.         free(input_type);
  6983.         return CROSSHAIRS;
  6984.         }
  6985.         if( strcmp(input_type, crosshair) == 0 ){
  6986.         free(input_type);
  6987.         return CROSSHAIR;
  6988.         }
  6989.         if( strcmp(input_type, onclick) == 0 ){
  6990.         free(input_type);
  6991.         return ONCLICK;
  6992.         }
  6993.         if( strcmp(input_type, drag) == 0 ){
  6994.         free(input_type);
  6995.         return DRAG;
  6996.         }
  6997.         if( strcmp(input_type, userdraw) == 0 ){
  6998.         free(input_type);
  6999.         return USERDRAW;
  7000.         }
  7001.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  7002.         free(input_type);
  7003.         return STYLE;
  7004.         }
  7005.         if( strcmp(input_type, fillcolor) == 0 ){
  7006.         free(input_type);
  7007.         return FILLCOLOR;
  7008.         }
  7009.         if( strcmp(input_type, strokecolor) == 0 ){
  7010.         free(input_type);
  7011.         return STROKECOLOR;
  7012.         }
  7013.         if( strcmp(input_type, filled) == 0  ){
  7014.         free(input_type);
  7015.         return FILLED;
  7016.         }
  7017.         if( strcmp(input_type, http) == 0 ){
  7018.         free(input_type);
  7019.         return HTTP;
  7020.         }
  7021.         if( strcmp(input_type, rays) == 0 ){
  7022.         free(input_type);
  7023.         return RAYS;
  7024.         }
  7025.         if( strcmp(input_type, lattice) == 0 ){
  7026.         free(input_type);
  7027.         return LATTICE;
  7028.         }
  7029.         if( strcmp(input_type, bgimage) == 0 ){
  7030.         free(input_type);
  7031.         return BGIMAGE;
  7032.         }
  7033.         if( strcmp(input_type, bgcolor) == 0 ){
  7034.         free(input_type);
  7035.         return BGCOLOR;
  7036.         }
  7037.         if( strcmp(input_type, backgroundimage) == 0 ){
  7038.         free(input_type);
  7039.         return BGIMAGE;
  7040.         }
  7041.         if( strcmp(input_type, text) == 0 ){
  7042.         free(input_type);
  7043.         return FLY_TEXT;
  7044.         }
  7045.         if( strcmp(input_type, textup) == 0 ){
  7046.         free(input_type);
  7047.         return FLY_TEXTUP;
  7048.         }
  7049.         if( strcmp(input_type, mouse) == 0 ){
  7050.         free(input_type);
  7051.         return MOUSE;
  7052.         }
  7053.         if( strcmp(input_type, mousex) == 0 ){
  7054.         free(input_type);
  7055.         return MOUSEX;
  7056.         }
  7057.         if( strcmp(input_type, mousey) == 0 ){
  7058.         free(input_type);
  7059.         return MOUSEY;
  7060.         }
  7061.         if( strcmp(input_type, mouse_degree) == 0 ){
  7062.         free(input_type);
  7063.         return MOUSE_DEGREE;
  7064.         }
  7065.         if( strcmp(input_type, mouse_display) == 0 ){
  7066.         free(input_type);
  7067.         return MOUSE_DISPLAY;
  7068.         }
  7069.         if( strcmp(input_type, mouseprecision) == 0 ){
  7070.         free(input_type);
  7071.         return MOUSE_PRECISION;
  7072.         }
  7073.         if( strcmp(input_type, precision) == 0 ){
  7074.         free(input_type);
  7075.         return MOUSE_PRECISION;
  7076.         }
  7077.         if( strcmp(input_type, curve) == 0 ){
  7078.         free(input_type);
  7079.         return CURVE;
  7080.         }
  7081.         if( strcmp(input_type, dcurve) == 0 ){
  7082.         use_dashed = TRUE;
  7083.         free(input_type);
  7084.         return CURVE;
  7085.         }
  7086.         if( strcmp(input_type, plot) == 0 ){
  7087.         free(input_type);
  7088.         return CURVE;
  7089.         }
  7090.         if( strcmp(input_type, dplot) == 0 ){
  7091.         use_dashed = TRUE;
  7092.         free(input_type);
  7093.         return CURVE;
  7094.         }
  7095.         if( strcmp(input_type, levelcurve) == 0 ){
  7096.         free(input_type);
  7097.         return LEVELCURVE;
  7098.         }
  7099.         if( strcmp(input_type, plotsteps) == 0 ){
  7100.         free(input_type);
  7101.         return PLOTSTEPS;
  7102.         }
  7103.         if( strcmp(input_type, plotstep) == 0 ){
  7104.         free(input_type);
  7105.         return PLOTSTEPS;
  7106.         }
  7107.         if( strcmp(input_type, tsteps) == 0 ){
  7108.         free(input_type);
  7109.         return PLOTSTEPS;
  7110.         }
  7111.         if( strcmp(input_type, fontsize) == 0 ){
  7112.         free(input_type);
  7113.         return FONTSIZE;
  7114.         }
  7115.         if( strcmp(input_type, fontcolor) == 0 ){
  7116.         free(input_type);
  7117.         return FONTCOLOR;
  7118.         }
  7119.         if( strcmp(input_type, arrow) == 0 ){
  7120.         free(input_type);
  7121.         return ARROW;
  7122.         }
  7123.         if( strcmp(input_type, arrow2) == 0 ){
  7124.         free(input_type);
  7125.         return ARROW2;
  7126.         }
  7127.         if( strcmp(input_type, darrow) == 0 ){
  7128.         free(input_type);
  7129.         use_dashed = TRUE;
  7130.         return ARROW;
  7131.         }
  7132.         if( strcmp(input_type, darrow2) == 0 ){
  7133.         free(input_type);
  7134.         use_dashed = TRUE;
  7135.         return ARROW2;
  7136.         }
  7137.         if( strcmp(input_type, zoom) == 0 ){
  7138.         free(input_type);
  7139.         return ZOOM;
  7140.         }
  7141.         if( strcmp(input_type, triangle) == 0 ){
  7142.         free(input_type);
  7143.         return TRIANGLE;
  7144.         }
  7145.         if( strcmp(input_type, ftriangle) == 0 ){
  7146.         free(input_type);
  7147.         use_filled = TRUE;
  7148.         return TRIANGLE;
  7149.         }
  7150.         if( strcmp(input_type, input) == 0 ){
  7151.         free(input_type);
  7152.         return INPUT;
  7153.         }
  7154.         if( strcmp(input_type, inputstyle) == 0 ){
  7155.         free(input_type);
  7156.         return INPUTSTYLE;
  7157.         }
  7158.         if( strcmp(input_type, textarea) == 0 ){
  7159.         free(input_type);
  7160.         return TEXTAREA;
  7161.         }
  7162.         if( strcmp(input_type, mathml) == 0 ){
  7163.         free(input_type);
  7164.         return MATHML;
  7165.         }
  7166.         if( strcmp(input_type, html) == 0 ){
  7167.         free(input_type);
  7168.         return MATHML;
  7169.         }
  7170.         if( strcmp(input_type, fontfamily) == 0 ){
  7171.         free(input_type);
  7172.         return FONTFAMILY;
  7173.         }
  7174.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  7175.         free(input_type);
  7176.         return POLYLINE;
  7177.         }
  7178.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  7179.         free(input_type);
  7180.         return RECT;
  7181.         }
  7182.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  7183.         free(input_type);
  7184.         return ROUNDRECT;
  7185.         }
  7186.         if( strcmp(input_type, froundrect) == 0 ){
  7187.         free(input_type);
  7188.         use_filled = TRUE;
  7189.         return ROUNDRECT;
  7190.         }
  7191.         if( strcmp(input_type, square) == 0 ){
  7192.         free(input_type);
  7193.         return SQUARE;
  7194.         }
  7195.         if( strcmp(input_type, fsquare) == 0 ){
  7196.         free(input_type);
  7197.         use_filled = TRUE;
  7198.         return SQUARE;
  7199.         }
  7200.         if( strcmp(input_type, dline) == 0 ){
  7201.         use_dashed = TRUE;
  7202.         free(input_type);
  7203.         return LINE;
  7204.         }
  7205.         if( strcmp(input_type, dvline) == 0 ){
  7206.         use_dashed = TRUE;
  7207.         free(input_type);
  7208.         return VLINE;
  7209.         }
  7210.         if( strcmp(input_type, dhline) == 0 ){
  7211.         use_dashed = TRUE;
  7212.         free(input_type);
  7213.         return HLINE;
  7214.         }
  7215.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  7216.         use_filled = TRUE;
  7217.         free(input_type);
  7218.         return RECT;
  7219.         }
  7220.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  7221.         use_filled = TRUE;
  7222.         free(input_type);
  7223.         return CIRCLE;
  7224.         }
  7225.         if( strcmp(input_type, circle) == 0 ){
  7226.         free(input_type);
  7227.         return CIRCLE;
  7228.         }
  7229.         if( strcmp(input_type, point) == 0 ){
  7230.         free(input_type);
  7231.         return POINT;
  7232.         }
  7233.         if( strcmp(input_type, points) == 0 ){
  7234.         free(input_type);
  7235.         return POINTS;
  7236.         }
  7237.         if( strcmp(input_type, filledarc) == 0 ){
  7238.         use_filled = TRUE;
  7239.         free(input_type);
  7240.         return ARC;
  7241.         }
  7242.         if( strcmp(input_type, arc) == 0 ){
  7243.         free(input_type);
  7244.         return ARC;
  7245.         }
  7246.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  7247.         free(input_type);
  7248.         return POLY;
  7249.         }
  7250.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  7251.         use_filled = TRUE;
  7252.         free(input_type);
  7253.         return POLY;
  7254.         }
  7255.         if( strcmp(input_type, ellipse) == 0){
  7256.         free(input_type);
  7257.         return ELLIPSE;
  7258.         }
  7259.         if( strcmp(input_type, fill) == 0 ){
  7260.         free(input_type);
  7261.         return FLOODFILL;
  7262.         }
  7263.         if( strcmp(input_type, string) == 0 ){
  7264.         free(input_type);
  7265.         return STRING;
  7266.         }
  7267.         if( strcmp(input_type, stringup) == 0 ){
  7268.         free(input_type);
  7269.         return STRINGUP;
  7270.         }
  7271.         if( strcmp(input_type, opacity) == 0 ){
  7272.         free(input_type);
  7273.         return OPACITY;
  7274.         }
  7275.         if( strcmp(input_type, comment) == 0){
  7276.         free(input_type);
  7277.         return COMMENT;
  7278.         }
  7279.         if( strcmp(input_type, end) == 0){
  7280.         free(input_type);
  7281.         return END;
  7282.         }
  7283.         if( strcmp(input_type, fellipse) == 0){
  7284.         free(input_type);
  7285.         use_filled = TRUE;
  7286.         return ELLIPSE;
  7287.         }
  7288.         if( strcmp(input_type, blink) == 0 ){
  7289.         free(input_type);
  7290.         return BLINK;
  7291.         }
  7292.         if( strcmp(input_type, clearbutton) == 0){
  7293.         free(input_type);
  7294.         return CLEARBUTTON;
  7295.         }
  7296.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  7297.         free(input_type);
  7298.         return TRANSLATION;
  7299.         }
  7300.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  7301.         free(input_type);
  7302.         return KILLTRANSLATION;
  7303.         }
  7304.         if( strcmp(input_type, rotate) == 0){
  7305.         free(input_type);
  7306.         return ROTATE;
  7307.         }
  7308.         if( strcmp(input_type, affine) == 0){
  7309.         free(input_type);
  7310.         return AFFINE;
  7311.         }
  7312.         if( strcmp(input_type, killaffine) == 0){
  7313.         free(input_type);
  7314.         return KILLAFFINE;
  7315.         }
  7316.         if( strcmp(input_type, audio) == 0 ){
  7317.         free(input_type);
  7318.         return AUDIO;
  7319.         }
  7320.         if( strcmp(input_type, audioobject) == 0 ){
  7321.         free(input_type);
  7322.         return AUDIOOBJECT;
  7323.         }
  7324.         if( strcmp(input_type, slider) == 0 ){
  7325.         free(input_type);
  7326.         return SLIDER;
  7327.         }
  7328.         if( strcmp(input_type, killslider) == 0 ){
  7329.         free(input_type);
  7330.         return KILLSLIDER;
  7331.         }
  7332.         if( strcmp(input_type, copy) == 0 ){
  7333.         free(input_type);
  7334.         return COPY;
  7335.         }
  7336.         if( strcmp(input_type, copyresized) == 0 ){
  7337.         free(input_type);
  7338.         return COPYRESIZED;
  7339.         }
  7340.         if( strcmp(input_type, patternfill) == 0 ){
  7341.         free(input_type);
  7342.         return PATTERNFILL;
  7343.         }
  7344.         if( strcmp(input_type, hatchfill) == 0 ){
  7345.         free(input_type);
  7346.         return HATCHFILL;
  7347.         }
  7348.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  7349.         free(input_type);
  7350.         return DIAMONDFILL;
  7351.         }
  7352.         if( strcmp(input_type, dotfill) == 0 ){
  7353.         free(input_type);
  7354.         return DOTFILL;
  7355.         }
  7356.         if( strcmp(input_type, gridfill) == 0 ){
  7357.         free(input_type);
  7358.         return GRIDFILL;
  7359.         }
  7360.         if( strcmp(input_type, imagefill) == 0 ){
  7361.         free(input_type);
  7362.         return IMAGEFILL;
  7363.         }
  7364.         if( strcmp(input_type, clicktile_colors) == 0 ){
  7365.         free(input_type);
  7366.         return CLICKTILE_COLORS;
  7367.         }
  7368.         if( strcmp(input_type, clicktile) == 0 ){
  7369.         free(input_type);
  7370.         return CLICKTILE;
  7371.         }
  7372.         if( strcmp(input_type, xlogscale) == 0 ){
  7373.         free(input_type);
  7374.         return XLOGSCALE;
  7375.         }
  7376.         if( strcmp(input_type, ylogscale) == 0 ){
  7377.         free(input_type);
  7378.         return YLOGSCALE;
  7379.         }
  7380.         if( strcmp(input_type, xylogscale) == 0 ){
  7381.         free(input_type);
  7382.         return XYLOGSCALE;
  7383.         }
  7384.         if( strcmp(input_type, ylogscale) == 0 ){
  7385.         free(input_type);
  7386.         return YLOGSCALE;
  7387.         }
  7388.         if( strcmp(input_type, xlogbase) == 0 ){
  7389.         free(input_type);
  7390.         return XLOGBASE;
  7391.         }
  7392.         if( strcmp(input_type, ylogbase) == 0 ){
  7393.         free(input_type);
  7394.         return YLOGBASE;
  7395.         }
  7396.         if( strcmp(input_type, intooltip) == 0 ){
  7397.         free(input_type);
  7398.         return INTOOLTIP;
  7399.         }
  7400.         if( strcmp(input_type,video) == 0 ){
  7401.         free(input_type);
  7402.         return VIDEO;
  7403.         }
  7404.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  7405.         free(input_type);
  7406.         return FLOODFILL;
  7407.         }
  7408.         if( strcmp(input_type,filltoborder) == 0 ){
  7409.         free(input_type);
  7410.         return FILLTOBORDER;
  7411.         }
  7412.         if( strcmp(input_type,clickfill) == 0 ){
  7413.         free(input_type);
  7414.         return CLICKFILL;
  7415.         }
  7416.         if( strcmp(input_type, replyformat) == 0 ){
  7417.         free(input_type);
  7418.         return REPLYFORMAT;
  7419.         }
  7420.         if( strcmp(input_type, pixelsize) == 0 ){
  7421.         free(input_type);
  7422.         return PIXELSIZE;
  7423.         }
  7424.         if( strcmp(input_type, setpixel) == 0 ){
  7425.         free(input_type);
  7426.         return SETPIXEL;
  7427.         }
  7428.         if( strcmp(input_type, pixels) == 0 ){
  7429.         free(input_type);
  7430.         return PIXELS;
  7431.         }
  7432.         if( strcmp(input_type, clickfillmarge) == 0 ){
  7433.         free(input_type);
  7434.         return CLICKFILLMARGE;
  7435.         }
  7436.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  7437.         free(input_type);
  7438.         return X_AXIS_STRINGS;
  7439.         }
  7440.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  7441.         free(input_type);
  7442.         return Y_AXIS_STRINGS;
  7443.         }
  7444.         if( strcmp(input_type, piechart) == 0  ){
  7445.         free(input_type);
  7446.         return PIECHART;
  7447.         }
  7448.         if( strcmp(input_type, barchart) == 0  ){
  7449.         free(input_type);
  7450.         return BARCHART;
  7451.         }
  7452.         if( strcmp(input_type, linegraph) == 0  ){
  7453.         free(input_type);
  7454.         return LINEGRAPH;
  7455.         }
  7456.         if( strcmp(input_type, clock) == 0  ){
  7457.         free(input_type);
  7458.         return CLOCK;
  7459.         }
  7460.         if( strcmp(input_type, legend) == 0  ){
  7461.         free(input_type);
  7462.         return LEGEND;
  7463.         }
  7464.         if( strcmp(input_type, legendcolors) == 0  ){
  7465.         free(input_type);
  7466.         return LEGENDCOLORS;
  7467.         }
  7468.         if( strcmp(input_type, xlabel) == 0  ){
  7469.         free(input_type);
  7470.         return XLABEL;
  7471.         }
  7472.         if( strcmp(input_type, ylabel) == 0  ){
  7473.         free(input_type);
  7474.         return YLABEL;
  7475.         }
  7476.         if( strcmp(input_type, animate) == 0  ){
  7477.         free(input_type);
  7478.         return ANIMATE;
  7479.         }
  7480.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  7481.         if( strcmp(input_type, transparent) == 0 ){
  7482.         free(input_type);
  7483.         return TRANSPARENT;
  7484.         }
  7485.         if( strcmp(input_type, status) == 0 || strcmp(input_type, nostatus) == 0 ){
  7486.         free(input_type);
  7487.         return STATUS;
  7488.         }
  7489.         if( strcmp(input_type, snaptogrid) == 0 ){
  7490.         free(input_type);
  7491.         return SNAPTOGRID;
  7492.         }
  7493.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  7494.         free(input_type);
  7495.         return XSNAPTOGRID;
  7496.         }
  7497.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  7498.         free(input_type);
  7499.         return YSNAPTOGRID;
  7500.         }
  7501.         if( strcmp(input_type, userinput_xy) == 0 ){
  7502.         free(input_type);
  7503.         return USERINPUT_XY;
  7504.         }
  7505.         if( strcmp(input_type, userinput_function) == 0 ){
  7506.         free(input_type);
  7507.         return USERINPUT_FUNCTION;
  7508.         }
  7509.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  7510.         free(input_type);
  7511.         return USERTEXTAREA_XY;
  7512.         }
  7513.         if( strcmp(input_type, userinput) == 0 ){
  7514.         free(input_type);
  7515.         return USERINPUT;
  7516.         }
  7517.         if( strcmp(input_type, sgraph) == 0 ){
  7518.         free(input_type);
  7519.         return SGRAPH;
  7520.         }
  7521.         if( strcmp(input_type, jsmath) == 0 ){
  7522.         free(input_type);
  7523.         return JSMATH;
  7524.         }
  7525.         if( strcmp(input_type, trace_jscurve) == 0 ){
  7526.         free(input_type);
  7527.         return TRACE_JSCURVE;
  7528.         }
  7529.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  7530.         free(input_type);
  7531.         return JSCURVE;
  7532.         }
  7533.         if( strcmp(input_type, centerstring) == 0 || strcmp(input_type, title) == 0 ){
  7534.         free(input_type);
  7535.         return CENTERSTRING;
  7536.         }
  7537.         if( strcmp(input_type, setlimits) == 0 ){
  7538.         free(input_type);
  7539.         return SETLIMITS;
  7540.         }
  7541.         if( strcmp(input_type, xunit) == 0 ){
  7542.         free(input_type);
  7543.         return XUNIT;
  7544.         }
  7545.         if( strcmp(input_type, yunit) == 0 ){
  7546.         free(input_type);
  7547.         return YUNIT;
  7548.         }
  7549.         if( strcmp(input_type, angle) == 0 ){
  7550.         free(input_type);
  7551.         return ANGLE;
  7552.         }
  7553.         if( strcmp(input_type, halfline) == 0 || strcmp(input_type, demiline) == 0  ){
  7554.         free(input_type);
  7555.         return HALFLINE;
  7556.         }
  7557.         if( strcmp(input_type, functionlabel) == 0 ){
  7558.         free(input_type);
  7559.         return FUNCTION_LABEL;
  7560.         }
  7561.         free(input_type);
  7562.         ungetc(c,infile);
  7563.         return 0;
  7564. }
  7565.  
  7566.