Subversion Repositories wimsdev

Rev

Rev 8297 | Rev 8304 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed

  1. /*27/7/2013 version 0.01
  2. "Inspired" by FLY program: http://martin.gleeson.com/fly
  3. *********************************************************************************
  4. * J.M. Evers 7/2013                                                             *
  5. * This is all just amateur scriblings... So no copyrights.                      *
  6. * This source code file, and compiled objects derived from it,                  *
  7. * can be used and distributed without restriction, including for commercial use *
  8. * No warrenty whatsoever                                                        *
  9. *********************************************************************************
  10. */
  11. #include "canvasdraw.h"
  12.  
  13. /******************************************************************************
  14. **  Internal Functions
  15. ******************************************************************************/
  16. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  17. void    sync_input(FILE *infile);/* proceed with inputfile */
  18. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  19. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  20. int     get_token(FILE *infile); /* read next char until EOL*/
  21. /*
  22. int     x2px(double x);
  23. int     y2px(double y);
  24. */
  25. double  px2x(int x);
  26. double  px2y(int y);
  27. double  get_real(FILE *infile,int last); /* read a value; calculation and symbols allowed */
  28. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  29. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  30. char    *get_string(FILE *infile,int last); /* get the string at the end of a command */
  31. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  32. char    *convert_hex2rgb(char *hexcolor);
  33. void    add_read_canvas(int canvas_root_id,int reply_format,int reply_precision);
  34. void    make_js_include(int canvas_root_id);
  35. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  36. FILE    *js_include_file;
  37. FILE    *get_file(int *line_number, char **filename);
  38. FILE    *infile;    /* will be stdin */
  39. /******************************************************************************
  40. ** global
  41. ******************************************************************************/
  42. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  43. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  44. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  45. int xsize = 320;
  46. int ysize = 320;
  47. double xmin = 0.0;
  48. double xmax = 320.0;
  49. double ymin = 0.0;
  50. double ymax = 320.0;
  51. double tmax = 2;
  52. double tmin = -2;
  53. /* flag to indicate parsing of line status */
  54. int done = FALSE;
  55. int type; /* eg command number */
  56. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  57. int slider = 0;/* slider=1 : x-values ; slider=2 : y-values;slider=3 angle values */
  58. int use_affine = FALSE;
  59. int use_rotate = FALSE;
  60. int use_filled = FALSE;
  61. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  62.  
  63. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  64.  
  65. /******************************************************************************
  66. ** Main Program
  67. ******************************************************************************/
  68. int main(int argc, char *argv[]){
  69.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  70.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  71.     infile = stdin;/* read flyscript via stdin */
  72.     int i,c;
  73.     double double_data[MAX_INT+1];
  74.     int int_data[MAX_INT+1];
  75.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  76.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  77.     int use_axis = FALSE;
  78.     int use_axis_numbering = FALSE;
  79.     int use_pan_and_zoom = FALSE;
  80.     int use_safe_eval = FALSE; /* if true, add just once : js function to evaluate userinput values for plotting etc */
  81.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  82.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  83.     int line_width = 1;
  84.     int decimals = 2;
  85.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  86.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  87.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  88.     int use_tooltip = FALSE;
  89.     char *tooltip_text = "Click here";
  90.     char *temp = ""; /* */
  91.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  92.     char *stroke_color = "255,0,0";
  93.     char *fill_color = "0,255,0";
  94.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  95.     char *font_color = "#00000";
  96.     char *draw_type = "points";
  97.     char *fly_font = "normal";
  98.     char *input_style = "";
  99.     char *flytext = "";
  100.     char *affine_matrix = "[1,0,0,1,0,0]";
  101.     char *function_label = "f(x)=";
  102.     int pixelsize = 1;
  103.     int reply_format = 0;
  104.     int input_cnt = 0;
  105.     int ext_img_cnt = 0;
  106.     int slider_cnt = 0;
  107.     int font_size = 12;
  108.     int dashtype[2] = { 4 , 4 };
  109.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  110.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  111.     int arrow_head = 8; /* size in px*/
  112.     int crosshair_size = 5; /* size in px*/
  113.     int plot_steps = 250;
  114.     int found_size_command = 0; /* 1 = found size ; 2 = found xrange; 3 = found yrange*/
  115.     int click_cnt = 1;
  116.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  117.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  118.     int barchart_cnt = 0; /* identifier for command 'barchart' ; multiple charts may be plotted in a single plot*/
  119.     int legend_cnt = -1; /* to allow multiple legends to be used, for multiple piecharts etc  */
  120.     int reply_precision = 100; /* used for precision of student answers / drawings */
  121.     double angle = 0.0;
  122.     int clickfillmarge = 20;
  123.     int animation_type = 9; /* == object type curve in drag library */
  124.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  125.     int use_slider_display = 0; /* in case of a slider, should we display it's value ?*/
  126.     size_t string_length = 0;
  127.     double stroke_opacity = 0.8;
  128.     double fill_opacity = 0.8;
  129.     char *URL = "http://localhost/images";
  130.     memset(buffer,'\0',MAX_BUFFER);
  131.     void *tmp_buffer = "";
  132.  
  133.     /* default writing a unzipped js-include file into wims getfile directory */
  134.     char *w_wims_session = getenv("w_wims_session");
  135.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  136.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  137.     }
  138.     int L0=strlen(w_wims_session) + 21;
  139.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  140.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  141.     mode_t process_mask = umask(0); /* check if file exists */
  142.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  143.     if( result == 0 || errno == EEXIST ){
  144.      umask(process_mask); /* be sure to set correct permission */
  145.      char *w_session = getenv("w_session");
  146.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  147.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  148.      snprintf(getfile_cmd,L1,"wims.cgi?session=%s&cmd=getfile&special_parm=%d.js",w_session,canvas_root_id);/* extension ".gz" is MANDATORY for webserver */
  149.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  150.     /* now write file into getfile dir*/
  151.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  152.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  153.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  154.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  155.     js_include_file = fopen(location,"w");/* open the file location for writing */
  156.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  157.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  158.  
  159. /* ----------------------------------------------------- */
  160. /* while more lines to process */
  161.  
  162.     while(!finished){
  163.         if(line_number>1 && found_size_command == 0){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  164.         type = get_token(infile);
  165.         done = FALSE;
  166.         /*
  167.         @canvasdraw
  168.         @will try use the same syntax as flydraw or svgdraw to paint a html5 bitmap image<br />by generating a tailor-made javascript include file: providing only the js-functionality needed to perform the job.<br />thus ensuring a minimal strain on the client browser <br />(unlike some popular 'canvas-do-it-all' libraries, who have proven to be not suitable for low-end computers found in schools...)
  169.         @General syntax <ul><li>The transparency of all objects can be controlled by command 'opacity [0-255],[0,255]'</il><li>a line based object can be controlled by command 'linewidth int'</li><li>a line based object may be dashed by using keyword 'dashed' before the object command.<br />the dashing type can be controled by command 'dashtype int,int'</li><li>a fillable object can be set fillable by starting the object command with an 'f'<br />(like frect,fcircle,ftriangle...)<br />or by using the keyword 'filled' before the object command.<br />The fill colour will be the stroke colour...(19/10/2013)</li><li> all draggable objects may have a slider for translation / rotation; several objects may be translated / rotated by a single slider</li> <li> a draggable object can be set draggable by a preceding command 'drag x/y/xy'<br />The translation can be read by javascript:read_dragdrop();The replyformat is : object_number : x-orig : y-orig : x-drag : y-drag<br />The x-orig/y-orig will be returned in maximum precision (javascript float)...<br />the x-drag/y-drag will be returned in defined 'precision' number of decimals<br />Multiple objects may be set draggable / clickable (no limit)<br /> not all flydraw objects may be dragged / clicked<br />Only draggable / clickable objects will be scaled on zoom and will be translated in case of panning</li><li> a 'onclick object' can be set 'clickable' by the preceding keyword 'onclick'<br />not all flydraw objects can be set clickable</li><li><b>remarks using a ';' as command separator</b><br />commands with only numeric or colour arguments may be using a ';' as command separator (in stead of a new line)<br />commands with a string argument may not use a ';' as command separator !<br />these exceptions are not really straight forward... so keep this in mind.</li></ul>
  170.         @If needed multiple interactive scripts may be used in a single webpage.<br />A function 'read_canvas()' and / or 'read_dragdrop()' can read all interactive userdata from these images.<br />The global array 'canvas_scripts' will contain all unique random "canvas_root_id" of the included scripts.<br />The included local javascript "read" functions "read_canvas%d()" and "read_dragdrop%d()" will have this "%d = canvas_root_id"<br />e.g. canvas_scripts[0] will be the random id of the first script in the page and will thus provide a function<br />fun = eval("read_canvas"+canvas_scripts[0]) to read user based drawings / inputfield in this first image.<br />The read_dragdrop is analogue.<br />Use command 'replyformat' to format the replies for an individual canvas script,<br />To read all user interactions from all included canvas scripts , use something like:<br /><em>function read_all_canvas_images(){<br />&nbsp;var script_len = canvas_scripts.length;<br />&nbsp;var draw_reply = "";<br />&nbsp;var found_result = false;<br />&nbsp;for(var p = 0 ; p < script_len ; p++){<br />&nbsp;&nbsp;var fun = eval("read_canvas"+canvas_scripts[p]);<br />&nbsp;&nbsp;if( typeof fun === 'function'){<br />&nbsp;&nbsp;&nbsp;var result = fun();<br />&nbsp;&nbsp;&nbsp;if( result&nbsp;&nbsp;&& result.length != 0){<br />&nbsp;&nbsp;&nbsp;&nbsp;if(script_len == 1 ){ return result;};<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;found_result = true;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;draw_reply = draw_reply + result + "\\n";<br />&nbsp;&nbsp;&nbsp;&nbsp;};<br />&nbsp;&nbsp;&nbsp;};<br />&nbsp;&nbsp;};<br />&nbsp;if( found_result ){return draw_reply;}else{return null;};<br />};</em>    
  171.         */
  172.         switch(type){
  173.         case END:
  174.         finished = 1;
  175.         done = TRUE;
  176.         break;
  177.         case 0:
  178.             sync_input(infile);
  179.             break;
  180.         case COMMENT:
  181.             sync_input(infile);
  182.             break;
  183.         case EMPTY:
  184.             sync_input(infile);
  185.             break;
  186.         case SIZE:
  187.             /*
  188.             @size width,height
  189.             @set canvas size in pixels
  190.             @mandatory first command
  191.             @if xrange and/or yrange is not given the range will be set to pixels :<br />xrange 0,xsize yrange 0,ysize<br />note: lower left  corner is Origin (0:0) !!! this in contrast to flydraw
  192.             */
  193.             found_size_command = 1;
  194.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  195.             ysize = (int)(abs(round(get_real(infile,1))));
  196.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  197.             xmin = 0;xmax = xsize;
  198.             ymin = 0;ymax = ysize;
  199.  
  200. /*
  201.  The sequence in which stuff is finally printed is important !!
  202.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  203. */
  204. fprintf(stdout,"\n<script type=\"text/javascript\">\
  205. if( typeof wims_status === 'undefined' ){ var wims_status = \"$status\";};\
  206. if( typeof use_dragdrop_reply === 'undefined' ){ var use_dragdrop_reply = false;};\
  207. if( typeof canvas_scripts === 'undefined' ){ var canvas_scripts = new Array();};\
  208. canvas_scripts.push(\"%d\");</script>\n\
  209. <!-- canvasdraw div and tooltip placeholder, if needed -->\n<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);
  210. 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);
  211. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n\
  212. \"use strict\";\n\
  213. <!-- these variables and functions must be global -->\n\
  214. var read_dragdrop%d;\
  215. var read_canvas%d;\
  216. var set_clock;\
  217. var clear_draw_area;\
  218. var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  219. var userdraw_x = [];var userdraw_y = [];var userdraw_radius = [];\n\
  220. var xsize = %d;\
  221. var ysize = %d;\
  222. var precision = 100;\
  223. var canvas_div = document.getElementById(\"canvas_div%d\");\
  224. 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;};\
  225. 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;};\
  226. 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);};};\
  227. 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);};};\
  228. 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);};};\
  229. 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);};};\
  230. function scale_x_radius(rx){return rx*xsize/(xmax - xmin);};\
  231. function scale_y_radius(ry){return ry*ysize/(ymax - ymin);};\
  232. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  233. 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) ));};\
  234. 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;};\
  235. 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;};\
  236. var x_use_snap_to_grid = 0;var y_use_snap_to_grid = 0;var snap_x = 1;var snap_y = 1;\
  237. function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\
  238. function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\
  239. var xlogbase = 10;\
  240. var ylogbase = 10;\
  241. var use_xlogscale = 0;\
  242. var use_ylogscale = 0;\
  243. var x_strings = null;\
  244. var y_strings = null;\
  245. var use_pan_and_zoom = 0;\
  246. var use_jsmath = 0;\
  247. var xstart = 0;\
  248. var ystart = 0;\
  249. var unit_x=\" \";\
  250. 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);
  251. /* default add the drag code : nearly always used ...*/
  252.   add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  253.  
  254.             break;
  255.         case XRANGE:
  256.         /*
  257.         @ xrange xmin,xmax
  258.         @ if not given: 0,xsize (eg in pixels)
  259.         */
  260.             for(i = 0 ; i<2; i++){
  261.                 switch(i){
  262.                     case 0: xmin = get_real(infile,0);break;
  263.                     case 1: xmax = get_real(infile,1);break;
  264.                     default: break;
  265.                 }
  266.             }
  267.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  268.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  269.             found_size_command++;
  270.             break;
  271.         case YRANGE:
  272.         /*
  273.         @ yrange ymin,ymax
  274.         @ if not given 0,ysize (eg in pixels)
  275.         */
  276.             for(i = 0 ; i<2; i++){
  277.                 switch(i){
  278.                     case 0: ymin = get_real(infile,0);break;
  279.                     case 1: ymax = get_real(infile,1);break;
  280.                     default: break;
  281.                 }
  282.             }
  283.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  284.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  285.             found_size_command++;
  286.             break;
  287.         case TRANGE:
  288.         /*
  289.         @ trange tmin,tmax
  290.         @ default -2,2
  291.         */
  292.             use_parametric = TRUE;
  293.             for(i = 0 ; i<2; i++){
  294.                 switch(i){
  295.                     case 0: tmin = get_real(infile,0);break;
  296.                     case 1: tmax = get_real(infile,1);break;
  297.                     default: break;
  298.                 }
  299.             }
  300.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  301.             break;
  302.         case LINEWIDTH:
  303.         /*
  304.         @ linewidth int
  305.         @ default 1
  306.         */
  307.             line_width = (int) (get_real(infile,1));
  308.             break;
  309.         case ARROWHEAD:
  310.         /*
  311.         @ arrowhead int
  312.         @ default 8 (pixels)
  313.         */
  314.             arrow_head = (int) (get_real(infile,1));
  315.             break;
  316.         case CROSSHAIRSIZE:
  317.         /*
  318.         @ crosshairsize int
  319.         @ default 10 (px)
  320.         */
  321.             crosshair_size = (int) (get_real(infile,1));
  322.             break;
  323.         case CROSSHAIR:
  324.         /*
  325.         @ crosshair x,y,color
  326.         @ draw a single crosshair point at (x;y) in color 'color'
  327.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  328.         @ may be set draggable / onclick
  329.         */
  330.             for(i=0;i<3;i++){
  331.                 switch(i){
  332.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  333.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  334.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  335.                         decimals = find_number_of_digits(precision);
  336.                         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);
  337.                         click_cnt++;reset();
  338.                         break;
  339.                     default:break;
  340.                 }
  341.             }
  342.             break;
  343.         case CROSSHAIRS:
  344.         /*
  345.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  346.         @ draw multiple crosshair points at given coordinates in color 'color'
  347.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  348.         @ may be set draggable / onclick individually (!)
  349.         */
  350.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  351.             fill_color = stroke_color;
  352.             i=0;
  353.             while( ! done ){     /* get next item until EOL*/
  354.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  355.                 if(i%2 == 0 ){
  356.                     double_data[i] = get_real(infile,0); /* x */
  357.                 }
  358.                 else
  359.                 {
  360.                     double_data[i] = get_real(infile,1); /* y */
  361.                 }
  362.                 i++;
  363.             }
  364.             decimals = find_number_of_digits(precision);
  365.             for(c=0 ; c < i-1 ; c = c+2){
  366.                 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);
  367.                 click_cnt++;
  368.             }
  369.             reset();
  370.             break;
  371.         case POINT:
  372.         /*
  373.         @ point x,y,color
  374.         @ draw a single point at (x;y) in color 'color'
  375.         @ use command 'linewidth int'  to adust size
  376.         @ may be set draggable / onclick
  377.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  378.         */
  379.             for(i=0;i<3;i++){
  380.                 switch(i){
  381.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  382.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  383.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  384.                     decimals = find_number_of_digits(precision);
  385.                     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);
  386.                     click_cnt++;break;
  387.                     default: break;
  388.                 }
  389.             }
  390.             reset();
  391.             break;
  392.         case POINTS:
  393.         /*
  394.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  395.         @ draw multiple points at given coordinates in color 'color'
  396.         @ use command 'linewidth int'  to adust size
  397.         @ may be set draggable / onclick individually (!)
  398.         */
  399.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  400.             fill_color = stroke_color;
  401.             i=0;
  402.             while( ! done ){     /* get next item until EOL*/
  403.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  404.                 if(i%2 == 0 ){
  405.                     double_data[i] = get_real(infile,0); /* x */
  406.                 }
  407.                 else
  408.                 {
  409.                     double_data[i] = get_real(infile,1); /* y */
  410.                 }
  411.                 i++;
  412.             }
  413.             decimals = find_number_of_digits(precision);
  414.             for(c = 0 ; c < i-1 ; c = c+2){
  415.                 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);
  416.                 click_cnt++;
  417.             }
  418.             reset();
  419.             break;
  420.         case SEGMENTS:
  421.         /*
  422.         @ segments color,x1,y1,x2,y2,...,x_n,y_n
  423.         @ draw multiple segments at given coordinates in color 'color'
  424.         @ use command 'linewidth int'  to adust size
  425.         @ may be set draggable / onclick individually (!)
  426.         */
  427.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  428.             fill_color = stroke_color;
  429.             i=0;
  430.             while( ! done ){     /* get next item until EOL*/
  431.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  432.                 if(i%2 == 0 ){
  433.                     double_data[i] = get_real(infile,0); /* x */
  434.                 }
  435.                 else
  436.                 {
  437.                     double_data[i] = get_real(infile,1); /* y */
  438.                 }
  439.                 i++;
  440.             }
  441.             decimals = find_number_of_digits(precision);
  442.             for(c = 0 ; c < i-1 ; c = c+4){
  443.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s,%d,%d));\n",click_cnt,onclick,drag_type,decimals,double_data[c],decimals,double_data[c+2],decimals,double_data[c+1],decimals,double_data[c+3],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix,slider,slider_cnt);
  444.                 click_cnt++;
  445.             }
  446.             reset();
  447.             break;
  448.         case SEGMENT:
  449.         /*
  450.         @ segment x1,y1,x2,y2,color
  451.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  452.         @ may be set draggable / onclick
  453.         */
  454.             for(i=0;i<5;i++) {
  455.                 switch(i){
  456.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  457.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  458.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  459.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  460.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  461.                         decimals = find_number_of_digits(precision);
  462.                         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);
  463.                         click_cnt++;reset();
  464.                         break;
  465.                     default: break;
  466.                 }
  467.             }
  468.             break;
  469.         case LINE:
  470.         /*
  471.         @ line x1,y1,x2,y2,color
  472.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  473.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  474.         @ may be set draggable / onclick
  475.         */
  476.             for(i=0;i<5;i++){
  477.                 switch(i){
  478.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  479.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  480.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  481.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  482.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  483.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  484.                         double_data[1] = xmin;
  485.                         double_data[3] = ymax;
  486.                         double_data[0] = double_data[10];
  487.                         double_data[2] = double_data[10];
  488.                     }
  489.                     else
  490.                     {
  491.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  492.                             double_data[1] = double_data[11];
  493.                             double_data[3] = double_data[11];
  494.                             double_data[0] = ymin;
  495.                             double_data[2] = xmax;
  496.                         }
  497.                         else
  498.                         {
  499.                         /* m */
  500.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  501.                         /* q */
  502.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  503.  
  504.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  505.  
  506.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  507.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  508.                             double_data[0] = xmin;
  509.                             double_data[2] = xmax;
  510.                         }
  511.                     }
  512.                     decimals = find_number_of_digits(precision);
  513.                     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);
  514.                     click_cnt++;reset();
  515.                     break;
  516.                 }
  517.             }
  518.             break;
  519.         case HALFLINE:
  520.         /*
  521.         @ demiline x1,y1,x2,y2,color
  522.         @ alternative : halfline
  523.         @ draws a halfline starting in (x1:y1) and through (x2:y2) in color 'color' (colorname or hex)
  524.         @ may be set draggable / onclick
  525.         */
  526.             for(i=0;i<5;i++){
  527.                 switch(i){
  528.                     case 0: double_data[0]= get_real(infile,0);break; /* x-values */
  529.                     case 1: double_data[1]= get_real(infile,0);break; /* y-values */
  530.                     case 2: double_data[10]= get_real(infile,0);break; /* x-values */
  531.                     case 3: double_data[11]= get_real(infile,0);break; /* y-values */
  532.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  533.                     if(double_data[0] == double_data[10]){ /* vertical halfline */
  534.                         if(double_data[1] < double_data[11]){
  535.                          double_data[3] = ymax + 1000;
  536.                         }
  537.                         else
  538.                         {
  539.                          double_data[3] = ymin - 1000;
  540.                         }
  541.                         double_data[2] = double_data[0];
  542.                     }
  543.                     else
  544.                     { /* horizontal halfline*/
  545.                      if( double_data[1] == double_data[11] ){
  546.                       if( double_data[0] < double_data[10] ){
  547.                         double_data[2] = xmax + 1000; /* halfline to the right */
  548.                       }
  549.                       else
  550.                       {
  551.                         double_data[2] = xmin - 1000; /* halfline to the left */
  552.                       }
  553.                       double_data[3] = double_data[1];
  554.                      }
  555.                      else
  556.                      {
  557.                       /* any other halfline */
  558.                       /* slope */
  559.                       double_data[12] = (double_data[11] - double_data[1])/(double_data[10] - double_data[0]);
  560.                       /* const */
  561.                       double_data[13] = double_data[1] - double_data[12]*double_data[0];
  562.                       if( double_data[0] < double_data[10] ){
  563.                        double_data[2] = double_data[2] + 1000;
  564.                       }
  565.                       else
  566.                       {
  567.                        double_data[2] = double_data[2] - 1000;
  568.                       }
  569.                       double_data[3] = double_data[12]*double_data[2] + double_data[13];
  570.                      }
  571.                     }    
  572.                     decimals = find_number_of_digits(precision);
  573.                     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);
  574.                     click_cnt++;reset();
  575.                     break;
  576.                 }
  577.             }
  578.        
  579.             break;
  580.         case HLINE:
  581.         /*
  582.         @ hline x,y,color
  583.         @ draw a horizontal line through point (x:y) in color 'color'
  584.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  585.         @ may be set draggable / onclick
  586.         */
  587.             for(i=0;i<3;i++) {
  588.                 switch(i){
  589.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  590.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  591.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  592.                     double_data[3] = double_data[1];
  593.                     decimals = find_number_of_digits(precision);
  594.                     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);
  595.                     click_cnt++;reset();
  596.                     break;
  597.                 }
  598.             }
  599.             break;
  600.         case VLINE:
  601.         /*
  602.         @ vline x,y,color
  603.         @ draw a vertical line through point (x:y) in color 'color'
  604.         @ may be set draggable / onclick
  605.         */
  606.             for(i=0;i<3;i++) {
  607.                 switch(i){
  608.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  609.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  610.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  611.                         double_data[2] = double_data[0];
  612.                         decimals = find_number_of_digits(precision);
  613.                         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);
  614.                         click_cnt++;reset();
  615.                     break;
  616.                 }
  617.             }
  618.             break;
  619.         case SQUARE:
  620.         /*
  621.         @ square x,y,side (px) ,color
  622.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  623.         @ use command 'fsquare x,y,side,color' for a filled square
  624.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  625.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  626.         @ may be set draggable / onclick
  627.         */
  628.             for(i=0;i<5;i++){
  629.                 switch(i){
  630.                     case 0:double_data[0] = get_real(infile,0);break; /* x1-values */
  631.                     case 1:double_data[1] = get_real(infile,0);break; /* y1-values */
  632.                     case 2:double_data[2] = (int) (get_real(infile,0));break; /* width in px */
  633.                     case 3:
  634.                         stroke_color = get_color(infile,1);/* name or hex color */
  635.                         decimals = find_number_of_digits(precision);
  636.                         double_data[3] = double_data[0] + (xmax - xmin)*double_data[2]/xsize;
  637.                         double_data[4] = double_data[1] + -1*(ymax - ymin)*double_data[2]/ysize;
  638.                         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);
  639.                         click_cnt++;reset();
  640.                         break;
  641.                 }
  642.             }
  643.             break;
  644.         case ROUNDRECT:
  645.         /*
  646.         @ roundrect x1,y1,x2,y2,radius,color
  647.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  648.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  649.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  650.         @ may be set draggable / onclick
  651.         */
  652.             for(i=0;i<6;i++){
  653.                 switch(i){
  654.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  655.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  656.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  657.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  658.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  659.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  660.                         /* ensure no inverted roundrect is produced... */
  661.                         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];}
  662.                         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];}
  663.                         decimals = find_number_of_digits(precision);
  664.                         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);
  665.                         click_cnt++;reset();
  666.                     break;
  667.                 }
  668.             }
  669.             break;
  670.         case RECT:
  671.         /*
  672.         @ rect x1,y1,x2,y2,color
  673.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  674.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  675.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  676.         @ may be set draggable / onclick
  677.         */
  678.             for(i=0;i<5;i++){
  679.                 switch(i){
  680.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  681.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  682.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  683.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  684.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  685.                         decimals = find_number_of_digits(precision);
  686.                         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);
  687.                         click_cnt++;reset();
  688.                         break;
  689.                 }
  690.             }
  691.             break;
  692.         case POLYLINE:
  693.         /*
  694.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  695.         @ may be set draggable / onclick
  696.         */
  697.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  698.             i=0;
  699.             c=0;
  700.             while( ! done ){     /* get next item until EOL*/
  701.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  702.                 for( c = 0 ; c < 2; c++){
  703.                     if(c == 0 ){
  704.                         double_data[i] = get_real(infile,0);
  705.                         i++;
  706.                     }
  707.                     else
  708.                     {
  709.                         double_data[i] = get_real(infile,1);
  710.                         i++;
  711.                     }
  712.                 }
  713.             }
  714.             /* draw path : not closed & not filled */
  715.             decimals = find_number_of_digits(precision);
  716.             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);
  717.             click_cnt++;reset();
  718.             break;
  719.         case POLY:
  720.         /*
  721.         @ poly color,x1,y1,x2,y2...x_n,y_n
  722.         @ draw closed polygon
  723.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  724.         @ may be set draggable / onclick
  725.         */
  726.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  727.             i=0;
  728.             c=0;
  729.             while( ! done ){     /* get next item until EOL*/
  730.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  731.                 for( c = 0 ; c < 2; c++){
  732.                     if(c == 0 ){
  733.                         double_data[i] = get_real(infile,0);
  734.                         i++;
  735.                     }
  736.                     else
  737.                     {
  738.                         double_data[i] = get_real(infile,1);
  739.                         i++;
  740.                     }
  741.                 }
  742.             }
  743.             /* draw path :  closed & optional filled */
  744.                 decimals = find_number_of_digits(precision);
  745.                 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);
  746.                 click_cnt++;reset();
  747.             break;
  748.         case ARC:
  749.         /*
  750.          @ arc xc,yc,width,height,start_angle,end_angle,color
  751.          @ can not be set "onclick" or "drag xy"
  752.          @ attention: width == height == radius in pixels
  753.          @ will not zoom in or zoom out (because radius is given in pixels an not in x/y-system !). Panning will work
  754.          @ use command 'angle' for scalable angle
  755.         */
  756.             for(i=0;i<7;i++){
  757.                 switch(i){
  758.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  759.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  760.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  761.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  762.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  763.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  764.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  765.                     /* in Shape library:
  766.                         x[0] = x[1] = xc
  767.                         y[0] = y[1] = yc
  768.                         w[0] = w[1] = radius = width = height
  769.                         h[0] = start_angle ; h[1] = end_engle
  770.                     */
  771.                         decimals = find_number_of_digits(precision);
  772.                         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);
  773.                         reset();
  774.                     break;
  775.                 }
  776.             }
  777.             break;
  778.         case ANGLE:
  779.         /*
  780.          @ angle xc,yc,width,start_angle,end_angle,color
  781.          @ width is in x-range
  782.          @ will zoom in/out
  783.          @ if size is controlled by command 'slider' use radians to set limits of slider.
  784.         */
  785.             for(i=0;i<7;i++){
  786.                 switch(i){
  787.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  788.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  789.                     case 2:double_data[2] = get_real(infile,0);break; /* width in pixels ! */
  790.                     case 3:double_data[3] = get_real(infile,0);break; /* start angle in degrees */
  791.                     case 4:double_data[4] = get_real(infile,0);break; /* end angle in degrees */
  792.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  793.                         decimals = find_number_of_digits(precision);
  794.                         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);
  795.                         reset();
  796.                     break;
  797.                 }
  798.             }
  799.             break;
  800.  
  801.         case ELLIPSE:
  802.         /*
  803.         @ ellipse xc,yc,radius_x,radius_y,color
  804.         @ a ellipse with center xc/yc in x/y-range
  805.         @ radius_x and radius_y are in pixels
  806.         @ may be set draggable / onclick
  807.         @ will shrink / expand on zoom out / zoom in
  808.         */
  809.             for(i=0;i<5;i++){
  810.                 switch(i){
  811.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  812.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  813.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  814.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  815.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  816.                         decimals = find_number_of_digits(precision);
  817.                         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);
  818.                         click_cnt++;reset();
  819.                     break;
  820.                 }
  821.             }
  822.             break;
  823.         case DASHTYPE:
  824.         /*
  825.         @ dashtype int ,int
  826.         @ When dashed is set, the objects will be drawn with this dashtyp
  827.         @ default value "dashtype 2,2"
  828.         */
  829.             for(i=0;i<2;i++){
  830.                 switch(i){
  831.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  832.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  833.                 }
  834.             }
  835.         break;
  836.         case CIRCLE:
  837.         /*
  838.         @ circle xc,yc,width (2*r in pixels),color
  839.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  840.         @ use command 'fillcolor color' to set the fillcolor
  841.         @ may be set draggable / onclick
  842.         @ will shrink / expand on zoom out / zoom in
  843.         */
  844.             for(i=0;i<4;i++){
  845.                 switch(i){
  846.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  847.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  848.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* for zoom in/out : radius in 'dx' xrange*/
  849.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  850.                         decimals = find_number_of_digits(precision);
  851.                         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);
  852.                         click_cnt++;reset();
  853.                     break;
  854.                 }
  855.             }
  856.             break;
  857.         case RAYS:
  858.         /*
  859.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  860.          @ draw rays in color 'color' and center (xc:yc)
  861.          @ may be set draggable or onclick (every individual ray)
  862.         */
  863.             stroke_color=get_color(infile,0);
  864.             fill_color = stroke_color;
  865.             double_data[0] = get_real(infile,0);/* xc */
  866.             double_data[1] = get_real(infile,0);/* yc */
  867.             i=2;
  868.             while( ! done ){     /* get next item until EOL*/
  869.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  870.                 if(i%2 == 0 ){
  871.                     double_data[i] = get_real(infile,0); /* x */
  872.                 }
  873.                 else
  874.                 {
  875.                     double_data[i] = get_real(infile,1); /* y */
  876.                 }
  877.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  878.                 i++;
  879.             }
  880.  
  881.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  882.             decimals = find_number_of_digits(precision);
  883.             for(c=2; c<i;c = c+2){
  884.                 click_cnt++;
  885.                 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);
  886.             }
  887.             reset();
  888.             break;
  889.         case ARROW:
  890.         /*
  891.         @ arrow x1,y1,x2,y2,h,color
  892.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  893.         @ use command 'linewidth int' to adjust thickness of the arrow
  894.         @ may be set draggable / onclick
  895.         */
  896.             for(i=0;i<6;i++){
  897.                 switch(i){
  898.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  899.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  900.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  901.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  902.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  903.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  904.                         decimals = find_number_of_digits(precision);
  905.                         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);
  906.                         click_cnt++;
  907.                         reset();
  908.                         break;
  909.                 }
  910.             }
  911.             break;
  912.         case ARROW2:
  913.         /*
  914.         @ arrow2 x1,y1,x2,y2,h,color
  915.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  916.         @ use command 'arrowhead int' to adjust the arrow head size
  917.         @ use command 'linewidth int' to adjust thickness of the arrow
  918.         @ may be set draggable / onclick
  919.         */
  920.             for(i=0;i<6;i++){
  921.                 switch(i){
  922.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  923.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  924.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  925.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  926.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  927.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  928.                         decimals = find_number_of_digits(precision);
  929.                         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);
  930.                         click_cnt++;reset();
  931.                         break;
  932.                 }
  933.             }
  934.             break;
  935.         case PARALLEL:
  936.         /*
  937.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  938.          @ can not be set "onclick" or "drag xy"
  939.         */
  940.             for( i = 0;i < 8; i++ ){
  941.                 switch(i){
  942.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  943.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  944.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  945.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  946.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  947.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  948.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  949.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  950.                     decimals = find_number_of_digits(precision);
  951.                     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);
  952.                     click_cnt++;reset();
  953.                     break;
  954.                     default: break;
  955.                 }
  956.             }
  957.             break;
  958.         case TRIANGLE:
  959.         /*
  960.          @triangle x1,y1,x2,y2,x3,y3,color
  961.          @may be set draggable / onclic
  962.         */
  963.             for(i=0;i<7;i++){
  964.                 switch(i){
  965.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  966.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  967.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  968.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  969.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  970.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  971.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  972.                         decimals = find_number_of_digits(precision);
  973.                         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);
  974.                         click_cnt++;reset();
  975.                         break;
  976.                     default: break;
  977.                 }
  978.             }
  979.             break;
  980.         case LATTICE:
  981.         /*
  982.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  983.          @can not be set "onclick" or "drag xy"
  984.         */
  985.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  986.             for( i = 0; i<9; i++){
  987.                 switch(i){
  988.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  989.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  990.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  991.                     case 3: int_data[3] = (int) -1*(get_real(infile,0));break; /* y1-values  -> y-pixels*/
  992.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  993.                     case 5: int_data[5] = (int) -1*(get_real(infile,0));break; /* y2-values  -> y-pixels*/
  994.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  995.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  996.                     case 8: stroke_color=get_color(infile,1);
  997.                         decimals = find_number_of_digits(precision);
  998.                         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);
  999.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1000.                         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);
  1001.                         add_to_buffer(tmp_buffer);
  1002.                     break;
  1003.                     default:break;
  1004.                 }
  1005.             }
  1006.             reset();
  1007.             break;
  1008.         case SNAPTOGRID:
  1009.         /*
  1010.          @ snaptogrid
  1011.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1012.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  1013.          @ 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 />
  1014.         */
  1015.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;");
  1016.         break;
  1017.         case XSNAPTOGRID:
  1018.         /*
  1019.          @ xsnaptogrid
  1020.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1021.          @ in case of userdraw the drawn points will snap to xmajor grid
  1022.          @ 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 />
  1023.         */
  1024.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 0;");
  1025.         break;
  1026.         case YSNAPTOGRID:
  1027.         /*
  1028.          @ ysnaptogrid
  1029.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  1030.          @ in case of userdraw the drawn points will snap to ymajor grid
  1031.          @ 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 />
  1032.         */
  1033.         fprintf(js_include_file,"\nx_use_snap_to_grid = 0;y_use_snap_to_grid = 1;");
  1034.         break;
  1035.         case USERINPUT:
  1036.         /*
  1037.          @ userinput function | textarea | inputfield
  1038.          @ alternative command + argment to keywords "userinput_function","userinput_textarea" and "userinput_xy"
  1039.          @ textarea and inputfield are only usable in combination with some 'userdraw draw_ type'
  1040.          @ function may be used any time (e.g. without userdraw)
  1041.          @ use command "functionlabel some_string" to define the inputfield text : default value "f(x)="
  1042.          @ use command 'strokecolor some_color' to adjust the plot / functionlabel color
  1043.          @ the userinput for the function will be corrected by a simple 'rawmath' implementation...
  1044.         */
  1045.             temp = get_string_argument(infile,1);
  1046.             if(strstr(temp,"function") != 0  || strstr(temp,"curve") != 0  || strstr(temp,"plot") != 0 ){
  1047.              if( js_function[DRAW_JSFUNCTION] != 1 ){
  1048.               add_rawmath(js_include_file);/* add simple rawmath routine to correct user input of function */
  1049.               js_function[DRAW_JSFUNCTION] = 1;
  1050.               if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1051.               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]);
  1052.               input_cnt++;
  1053.              }
  1054.              else
  1055.              {
  1056.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  1057.               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]);
  1058.               input_cnt++;
  1059.              }
  1060.              if( use_js_math == FALSE){/* add this stuff only once...*/
  1061.               add_to_js_math(js_include_file);
  1062.               use_js_math = TRUE;
  1063.              }
  1064.              if( use_js_plot == FALSE){
  1065.               use_js_plot = TRUE;
  1066.               add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1067.              }
  1068.             }
  1069.             else
  1070.             {
  1071.              if(strstr(temp,"inputfield") != 0 ){
  1072.               if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1073.               if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1074.               use_input_xy = 1;
  1075.              }
  1076.              else
  1077.              {
  1078.               if(strstr(temp,"textarea") != 0 ){
  1079.                if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1080.                if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1081.                use_input_xy = 2;
  1082.               }
  1083.               else
  1084.               {
  1085.                 canvas_error("userinput argument may be \"function,inputfield,textarea\"");
  1086.               }
  1087.              }
  1088.             }
  1089.             break;
  1090.         case USERTEXTAREA_XY:
  1091.         /*
  1092.         @ usertextarea_xy
  1093.         @ keyword
  1094.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  1095.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  1096.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1097.         @ user drawings will not zoom on zooming (or pan on panning)
  1098.         */
  1099.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  1100.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1101.             use_input_xy = 2;
  1102.             break;
  1103.         case USERINPUT_XY:
  1104.         /*
  1105.         @ userinput_xy
  1106.         @ keyword
  1107.         @ to be used in combination with command "userdraw object_type,color"
  1108.         @ 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)
  1109.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  1110.         @ 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.
  1111.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  1112.         @ user drawings will not zoom on zooming (or pan on panning)
  1113.         */
  1114.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  1115.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  1116.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  1117.             use_input_xy = 1;
  1118.             break;
  1119.         case FUNCTION_LABEL:
  1120.             function_label = get_string_argument(infile,1);
  1121.             break;
  1122.         case USERINPUT_FUNCTION:
  1123.         /*
  1124.         @ userinput_function
  1125.         @ keyword
  1126.         @ if set , a inputfield will be added to the page
  1127.         @ repeat keyword for more function input fields
  1128.         @ the userinput value will be plotted in the canvas
  1129.         @ 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
  1130.         @ 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
  1131.         @ incompatible with command 'intooltip link_text_or_image' : it uses the tooltip div for adding the inputfield
  1132.         */
  1133.             if( js_function[DRAW_JSFUNCTION] != 1 ){
  1134.              js_function[DRAW_JSFUNCTION] = 1;
  1135.              add_rawmath(js_include_file);
  1136.              if(reply_format == 0){reply_format = 24;}/* read canvas_input values */
  1137.              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]);
  1138.              input_cnt++;
  1139.             }
  1140.             else
  1141.             {
  1142.               /* no need to add DRAW_JSFUNCTION , just call it with the parameters */
  1143.              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]);
  1144.              input_cnt++;
  1145.             }
  1146.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1147.              add_to_js_math(js_include_file);
  1148.              use_js_math = TRUE;
  1149.             }
  1150.             if( use_js_plot == FALSE){
  1151.              use_js_plot = TRUE;
  1152.              add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1153.             }
  1154.             break;
  1155.         case USERDRAW:
  1156.         /*
  1157.         @ userdraw object_type,color
  1158.         @ 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>
  1159.         @ 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)
  1160.         @ 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
  1161.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  1162.         @ 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)
  1163.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  1164.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  1165.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  1166.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  1167.         @ may be combined with keyword 'userinput_xy' or
  1168.         @ 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.!
  1169.         */
  1170.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  1171.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  1172.             }
  1173.             reply_precision = precision;
  1174.             use_userdraw = TRUE;
  1175.             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]);
  1176.             draw_type = get_string_argument(infile,0);
  1177.             stroke_color = get_color(infile,1);
  1178.             if( strcmp(draw_type,"point") == 0 ){
  1179.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1180.                 if(reply_format == 0 ){reply_format = 8;}
  1181.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1182.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1183.                 if(use_input_xy == 1){
  1184.                     add_input_circle(js_include_file,1,1);
  1185.                     add_input_xy(js_include_file,canvas_root_id);
  1186.                 }
  1187.                 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);
  1188.             }
  1189.             else
  1190.             if( strcmp(draw_type,"points") == 0 ){
  1191.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1192.                 if(reply_format == 0 ){reply_format = 8;}
  1193.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1194.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1195.                 if(use_input_xy == 1){
  1196.                     add_input_circle(js_include_file,1,2);
  1197.                     add_input_xy(js_include_file,canvas_root_id);
  1198.                 }
  1199.                 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);
  1200.             }
  1201.             else
  1202.             if( strcmp(draw_type,"segment") == 0 ){
  1203.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1204.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1205.                 if(reply_format == 0){reply_format = 11;}
  1206.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1207.                 if(use_input_xy == 1){
  1208.                     add_input_segment(js_include_file,1);
  1209.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1210.                 }
  1211.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1212.             }
  1213.             else
  1214.             if( strcmp(draw_type,"polyline") == 0 ){
  1215.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  1216.                 if(reply_format == 0){reply_format = 23;}
  1217.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1218.                 if( use_input_xy == 1 ){
  1219.                     add_input_polyline(js_include_file);
  1220.                     add_input_xy(js_include_file,canvas_root_id);
  1221.                 }
  1222.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1223.             }
  1224.             else
  1225.             if( strcmp(draw_type,"segments") == 0 ){
  1226.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1227.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1228.                 if(reply_format == 0){reply_format = 11;}
  1229.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1230.                 if(use_input_xy == 1){
  1231.                     add_input_segment(js_include_file,2);
  1232.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1233.                 }
  1234.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1235.             }
  1236.             else
  1237.             if( strcmp(draw_type,"circle") == 0 ){
  1238.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1239.                 if(reply_format == 0){reply_format = 10;}
  1240.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1241.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1242.                 if(use_input_xy == 1){
  1243.                     add_input_circle(js_include_file,2,1);
  1244.                     add_input_xyr(js_include_file,canvas_root_id);
  1245.                 }
  1246.                 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]);
  1247.             }
  1248.             else
  1249.             if( strcmp(draw_type,"circles") == 0 ){
  1250.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1251.                 if(reply_format == 0){reply_format = 10;}
  1252.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1253.                 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]);
  1254.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1255.                 if(use_input_xy == 1){
  1256.                     add_input_circle(js_include_file,2,2);
  1257.                     add_input_xyr(js_include_file,canvas_root_id);
  1258.                 }
  1259.             }
  1260.             else
  1261.             if(strcmp(draw_type,"crosshair") == 0 ){
  1262.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1263.                 if(reply_format == 0){reply_format = 8;}
  1264.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1265.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1266.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1267.                 if(use_input_xy == 1){
  1268.                     add_input_crosshair(js_include_file,1);
  1269.                     add_input_xy(js_include_file,canvas_root_id);
  1270.                 }
  1271.             }
  1272.             else
  1273.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1274.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1275.                 if(reply_format == 0){reply_format = 8;}
  1276.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1277.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1278.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1279.                 if(use_input_xy == 1){
  1280.                     add_input_crosshair(js_include_file,2);
  1281.                     add_input_xy(js_include_file,canvas_root_id);
  1282.                 }
  1283.             }
  1284.             else
  1285.             if(strcmp(draw_type,"freehandline") == 0 ){
  1286.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1287.                 if(reply_format == 0){reply_format = 6;}
  1288.                 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]);
  1289.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1290.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1291.             }
  1292.             else
  1293.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1294.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1295.                 if(reply_format == 0){reply_format = 6;}
  1296.                 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]);
  1297.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  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,"path") == 0 ){
  1302.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1303.                 if(reply_format == 0){reply_format = 6;}
  1304.                 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]);
  1305.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1306.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1307.             }
  1308.             else
  1309.             if(strcmp(draw_type,"paths") == 0 ){
  1310.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1311.                 if(reply_format == 0){reply_format = 6;}
  1312.                 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]);
  1313.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1314.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1315.             }
  1316.             else
  1317.             if(strcmp(draw_type,"arrows") == 0 ){
  1318.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1319.                 if(reply_format == 0){reply_format = 11;}
  1320.                 add_js_arrows(js_include_file,2,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1321.                 if(use_input_xy == 1){
  1322.                     add_input_arrow(js_include_file,2);
  1323.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1324.                 }
  1325.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1326.             }
  1327.             else
  1328.             if(strcmp(draw_type,"arrows2") == 0 ){
  1329.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1330.                 if(reply_format == 0){reply_format = 11;}
  1331.                 add_js_arrows(js_include_file,2,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1332.                 if(use_input_xy == 1){
  1333.                     add_input_arrow(js_include_file,1);
  1334.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1335.                 }
  1336.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1337.             }
  1338.             else
  1339.             if(strcmp(draw_type,"arrow2") == 0 ){
  1340.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1341.                 if(reply_format == 0){reply_format = 11;}
  1342.                 add_js_arrows(js_include_file,1,draw_type,line_width,2,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1343.                 if(use_input_xy == 1){
  1344.                     add_input_arrow(js_include_file,1);
  1345.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1346.                 }
  1347.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1348.             }
  1349.             else
  1350.             if(strcmp(draw_type,"arrow") == 0 ){
  1351.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1352.                 if(reply_format == 0){reply_format = 11;}
  1353.                 add_js_arrows(js_include_file,1,draw_type,line_width,1,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1354.                 if(use_input_xy == 1){
  1355.                     add_input_arrow(js_include_file,1);
  1356.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1357.                 }
  1358.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1359.             }
  1360.             else
  1361.             if(strcmp(draw_type,"polygon") == 0){
  1362.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1363.                 if(reply_format == 0){reply_format = 2;}
  1364.                 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]);
  1365.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1366.                 if(use_input_xy == 2){
  1367.                   add_textarea_polygon(js_include_file);
  1368.                   add_textarea_xy(js_include_file,canvas_root_id);
  1369.                 }
  1370.             }
  1371.             else
  1372.             if(strncmp(draw_type,"poly",4) == 0){
  1373.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1374.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1375.                 if(reply_format == 0){reply_format = 2;}
  1376.                 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]);
  1377.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1378.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1379.             }
  1380.             else
  1381.             if(strcmp(draw_type,"triangle") == 0){
  1382.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1383.                 if(reply_format == 0){reply_format = 2;}
  1384.                 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]);
  1385.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1386.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1387.             }
  1388.             else
  1389.             if( strcmp(draw_type,"hline") == 0 ){
  1390.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1391.                 if(reply_format == 0){reply_format = 11;}
  1392.                 add_js_hlines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1393.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1394.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1395.             }
  1396.             else
  1397.             if( strcmp(draw_type,"hlines") == 0 ){
  1398.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1399.                 if(reply_format == 0){reply_format = 11;}
  1400.                 add_js_hlines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1401.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1402.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1403.             }
  1404.             else
  1405.             if( strcmp(draw_type,"vline") == 0 ){
  1406.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1407.                 if(reply_format == 0){reply_format = 11;}
  1408.                 add_js_hlines(js_include_file,3,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1409.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1410.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1411.             }
  1412.             else
  1413.             if( strcmp(draw_type,"vlines") == 0 ){
  1414.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1415.                 if(reply_format == 0){reply_format = 11;}
  1416.                 add_js_hlines(js_include_file,4,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1417.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1418.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1419.             }
  1420.             else
  1421.             if( strcmp(draw_type,"line") == 0 ){
  1422.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1423.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1424.                 if(reply_format == 0){reply_format = 11;}
  1425.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1426.                 if( use_input_xy == 1 ){
  1427.                     add_input_line(js_include_file,1);
  1428.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1429.                 }
  1430.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1431.             }
  1432.             else
  1433.             if( strcmp(draw_type,"lines") == 0 ){
  1434.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1435.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1436.                 if(reply_format == 0){reply_format = 11;}
  1437.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1438.                 if( use_input_xy == 1 ){
  1439.                     add_input_line(js_include_file,2);
  1440.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1441.                 }
  1442.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1443.             }
  1444.             else
  1445.             if( strcmp(draw_type,"demilines") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1446.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1447.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1448.                 if(reply_format == 0){reply_format = 11;}
  1449.                 add_js_demilines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1450.                 if( use_input_xy == 1 ){
  1451.                     add_input_demiline(js_include_file,2);
  1452.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1453.                 }
  1454.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1455.             }
  1456.             else
  1457.             if( strcmp(draw_type,"demiline") == 0 || strcmp(draw_type,"demilines") == 0 ){
  1458.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1459.                 if( js_function[DRAW_DEMILINES] != 1 ){ js_function[DRAW_DEMILINES] = 1;}
  1460.                 if(reply_format == 0){reply_format = 11;}
  1461.                 add_js_demilines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1462.                 if( use_input_xy == 1 ){
  1463.                     add_input_demiline(js_include_file,1);
  1464.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1465.                 }
  1466.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1467.             }
  1468.             else
  1469.             if( strcmp(draw_type,"rects") == 0){
  1470.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1471.                 if(reply_format == 0){reply_format = 2;}
  1472.                 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]);
  1473.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1474.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1475.             }
  1476.             else
  1477.             if( strcmp(draw_type,"roundrects") == 0){
  1478.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1479.                 if(reply_format == 0){reply_format = 2;}
  1480.                 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]);
  1481.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1482.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1483.             }
  1484.             else
  1485.             if( strcmp(draw_type,"rect") == 0){
  1486.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1487.                 if(reply_format == 0){reply_format = 2;}
  1488.                 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]);
  1489.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1490.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1491.             }
  1492.             else
  1493.             if( strcmp(draw_type,"roundrect") == 0){
  1494.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1495.                 if(reply_format == 0){reply_format = 2;}
  1496.                 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]);
  1497.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1498.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1499.             }
  1500.             else
  1501.             if( strcmp(draw_type,"arcs") == 0){
  1502.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1503.                 if(reply_format == 0){reply_format = 25;}
  1504.                 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]);
  1505.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1506.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1507.             }
  1508.             else
  1509.             if( strcmp(draw_type,"arc") == 0){
  1510.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1511.                 if(reply_format == 0){reply_format = 25;}
  1512.                 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]);
  1513.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1514.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1515.             }
  1516.             else
  1517.             if( strcmp(draw_type,"text") == 0){
  1518.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1519.                 if(reply_format == 0){reply_format = 17;}
  1520.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,font_color,stroke_opacity);
  1521.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1522.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1523.             }
  1524.             else
  1525.             if( strcmp(draw_type,"inputs") == 0){
  1526.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1527.                 if(reply_format == 0){reply_format = 27;}
  1528.                 add_js_inputs(js_include_file,canvas_root_id,2,input_cnt,input_style,line_width);
  1529.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1530.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1531.             }
  1532.             else
  1533.             if( strcmp(draw_type,"input") == 0){
  1534.                 if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1535.                 if(reply_format == 0){reply_format = 27;}
  1536.                 add_js_inputs(js_include_file,canvas_root_id,1,input_cnt,input_style,line_width);
  1537.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1538.                 if(use_input_xy == 2){ canvas_error("usertextarea_xy not yet implemented for this userdraw type !");}
  1539.             }
  1540.             else
  1541.             {
  1542.                 canvas_error("unknown drawtype or typo? ");
  1543.             }
  1544.             reset();
  1545.         break;
  1546.         case PLOTSTEPS:
  1547.             /*
  1548.              @ plotsteps a_number
  1549.              @ default 150
  1550.              @ use with care !
  1551.             */
  1552.             plot_steps = (int) (get_real(infile,1));
  1553.             break;
  1554.         case FONTSIZE:
  1555.         /*
  1556.          @fontsize font_size
  1557.          @default value 12
  1558.         */
  1559.             font_size = (int) (get_real(infile,1));
  1560.             break;
  1561.         case FONTCOLOR:
  1562.         /*
  1563.          @fontcolor color
  1564.          @color: hexcolor or colorname
  1565.          @default: black
  1566.          @example usage: x/y-axis text
  1567.         */
  1568.             font_color = get_color(infile,1);
  1569.             break;
  1570.         case ANIMATE:
  1571.         /*
  1572.          @animate type
  1573.          @REMOVED : this should be done with a slider
  1574.          @type may be "point" (nothing else , yet...)
  1575.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1576.          @will animate a point on the next plot/curve command
  1577.          @the curve will not be draw
  1578.          @moves repeatedly from xmin to xmax
  1579.         */
  1580.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1581.             break;
  1582.         case LEVELCURVE:
  1583.         /*
  1584.         @levelcurve color,expression in x/y,l1,l2,...
  1585.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1586.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1587.         @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
  1588.         @note : the arrays for holding the javascript data are limited in size
  1589.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1590.         */
  1591.             fill_color = get_color(infile,0);
  1592.             char *fun1 = get_string_argument(infile,0);
  1593.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1594.             i = 0;
  1595.             done = FALSE;
  1596.             while( !done ){
  1597.              double_data[i] = get_real(infile,1);
  1598.              i++;
  1599.             }
  1600.             for(c = 0 ; c < i; c++){
  1601.              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);
  1602.              click_cnt++;
  1603.             }
  1604.             reset();
  1605.             break;
  1606.         case TRACE_JSCURVE:
  1607.         /*
  1608.          @trace_jscurve some_math_function
  1609.          @will use a crosshair to trace the jsmath curve
  1610.          @two inputfields will display the current x/y-values (numerical evaluation by javascript)
  1611.          @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
  1612.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1613.          @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...
  1614.         */
  1615.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1616.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1617.             if( use_js_math == FALSE){
  1618.                 add_to_js_math(js_include_file);
  1619.                 use_js_math = TRUE;
  1620.             }
  1621.             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);
  1622.             break;
  1623.         case JSMATH:
  1624.         /*
  1625.             @jsmath some_math_function
  1626.             @will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  1627.             @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
  1628.             @example: jsmath sin(x^2)
  1629.             @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...
  1630.         */
  1631.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1632.             if( use_js_math == FALSE){
  1633.                 add_to_js_math(js_include_file);
  1634.                 use_js_math = TRUE;
  1635.             }
  1636.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1637.             break;
  1638.         case JSCURVE:
  1639.         /*
  1640.          @jscurve color,formula(x)
  1641.          @your function will be plotted by the javascript engine of the client browser.
  1642.          @use only basic math in your curve:<br /> sqrt,^,asin,acos,atan,log,pi,abs,sin,cos,tan,e
  1643.          @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...
  1644.          @Attention : last "precision" command in the canvasdraw script determines the calculation precision of the javascript curve plot !
  1645.          @no validity check is done by wims.
  1646.          @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
  1647.          @use command 'trace_jscurve formula(x)` for tracing
  1648.          @use commmand 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  1649.          @can not be set draggable / onclick (yet)
  1650.          @commands plotjump / plotstep are not active for 'jscurve'
  1651.         */
  1652.             stroke_color = get_color(infile,0);
  1653.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1654.                 add_to_js_math(js_include_file);
  1655.                 use_js_math = TRUE;
  1656.             }
  1657.             if( use_js_plot == FALSE){
  1658.                 use_js_plot = TRUE;
  1659.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1660.             }
  1661.             temp = get_string_argument(infile,1);
  1662.             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]);
  1663.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1664.             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]);
  1665.             add_to_buffer(tmp_buffer);
  1666.             use_js_plot++; /* we need to create multiple canvasses, so we may zoom and pan ?? */
  1667.  
  1668.         break;
  1669.         case CURVE:
  1670.         /*
  1671.          @curve color,formula(x)
  1672.          @plot color,formula(x)
  1673.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1674.          @use command "precision" to increase the number of digits of the plotted points
  1675.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1676.          @may be set draggable / onclick
  1677.         */
  1678.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1679.                 use_parametric = FALSE;
  1680.                 stroke_color = get_color(infile,0);
  1681.                 char *fun1 = get_string_argument(infile,0);
  1682.                 char *fun2 = get_string_argument(infile,1);
  1683.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1684.                 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);
  1685.                 click_cnt++;
  1686.             }
  1687.             else
  1688.             {
  1689.                 stroke_color = get_color(infile,0);
  1690.                 char *fun1 = get_string_argument(infile,1);
  1691.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1692.                 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);
  1693.                 click_cnt++;
  1694.             }
  1695.             animation_type = 9;/* reset to curve plotting without animation */
  1696.             reset();
  1697.             break;
  1698.         case FLY_TEXT:
  1699.         /*
  1700.         @ text fontcolor,x,y,font,text_string
  1701.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1702.         @ use command 'fontsize' to increase base fontsize for these keywords
  1703.         @ may be set "onclick" or "drag xy"
  1704.         @ backwards compatible with flydraw
  1705.         @ unicode supported: text red,0,0,huge,\\u2232
  1706.         @ use command 'string' combined with 'fontfamily' for a more fine grained control over html5 canvas text element
  1707.         @ 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.
  1708.         */
  1709.             for(i = 0; i < 5 ;i++){
  1710.                 switch(i){
  1711.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1712.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1713.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1714.                     case 3: fly_font = get_string_argument(infile,0);
  1715.                             if(strcmp(fly_font,"giant") == 0){
  1716.                                 font_size = (int)(font_size + 24);
  1717.                             }
  1718.                             else
  1719.                             {
  1720.                                 if(strcmp(fly_font,"huge") == 0){
  1721.                                     font_size = (int)(font_size + 14);
  1722.                                 }
  1723.                                 else
  1724.                                 {
  1725.                                     if(strcmp(fly_font,"large") == 0){
  1726.                                         font_size = (int)(font_size + 6);
  1727.                                         }
  1728.                                         else
  1729.                                         {
  1730.                                             if(strcmp(fly_font,"small") == 0){
  1731.                                                 font_size = (int)(font_size - 4);
  1732.                                                 if(font_size<0){font_size = 8;}
  1733.                                         }
  1734.                                     }
  1735.                                 }
  1736.                             }
  1737.                             break; /* font_size ! */
  1738.                     case 4:
  1739.                         temp = get_string_argument(infile,1);
  1740.                         decimals = find_number_of_digits(precision);
  1741.                         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);
  1742.                         click_cnt++;reset();break;
  1743.                     default:break;
  1744.                 }
  1745.             }
  1746.             break;
  1747.         case FLY_TEXTUP:
  1748.         /*
  1749.          @ textup fontcolor,x,y,font,text_string
  1750.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1751.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1752.          @ use command 'fontsize' to increase base fontsize for the keywords
  1753.          @ backwards compatible with flydraw
  1754.          @ unicode supported: textup red,0,0,huge,\\u2232
  1755.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1756.          @ 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.
  1757.         */
  1758.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1759.             for(i = 0; i<5 ;i++){
  1760.                 switch(i){
  1761.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1762.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1763.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1764.                     case 3: fly_font = get_string_argument(infile,0);
  1765.                             if(strcmp(fly_font,"giant") == 0){
  1766.                                 font_size = (int)(font_size + 24);
  1767.                             }
  1768.                             else
  1769.                             {
  1770.                                 if(strcmp(fly_font,"huge") == 0){
  1771.                                     font_size = (int)(font_size + 14);
  1772.                                 }
  1773.                                 else
  1774.                                 {
  1775.                                     if(strcmp(fly_font,"large") == 0){
  1776.                                         font_size = (int)(font_size + 6);
  1777.                                         }
  1778.                                         else
  1779.                                         {
  1780.                                             if(strcmp(fly_font,"small") == 0){
  1781.                                                 font_size = (int)(font_size - 4);
  1782.                                                 if(font_size<0){font_size = 8;}
  1783.                                         }
  1784.                                     }
  1785.                                 }
  1786.                             }
  1787.                             break; /* font_size ! */
  1788.                     case 4:
  1789.                     decimals = find_number_of_digits(precision);
  1790.                     temp = get_string_argument(infile,1);
  1791.                     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);
  1792.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1793.                     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);
  1794.                     add_to_buffer(tmp_buffer);
  1795.                     break;
  1796.                     default:break;
  1797.                 }
  1798.             }
  1799.             reset();
  1800.             break;
  1801.         case FONTFAMILY:
  1802.         /*
  1803.          @ fontfamily font_description
  1804.          @ set the font family; for browsers that support it
  1805.          @ font_description: Ariel ,Courier, Helvetica etc
  1806.          @ 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
  1807.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1808.         */
  1809.             font_family = get_string(infile,1);
  1810.             break;
  1811.         case STRINGUP:
  1812.         /*
  1813.          @ stringup color,x,y,rotation_degrees,the text string
  1814.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1815.          @ unicode supported: stringup red,0,0,45,\\u2232
  1816.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1817.  
  1818.         */
  1819.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1820.             for(i=0;i<6;i++){
  1821.                 switch(i){
  1822.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1823.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1824.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1825.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1826.                     case 4: decimals = find_number_of_digits(precision);
  1827.                             temp = get_string_argument(infile,1);
  1828.                             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);
  1829.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1830.                             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);
  1831.                             add_to_buffer(tmp_buffer);
  1832.                             break;
  1833.                     default:break;
  1834.                 }
  1835.             }
  1836.             reset();
  1837.             break;
  1838.         case STRING:
  1839.         /*
  1840.          @ string color,x,y,the text string
  1841.          @ may be set "onclick" or "drag xy"
  1842.          @ unicode supported: string red,0,0,\\u2232
  1843.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1844.         */
  1845.             for(i=0;i<5;i++){
  1846.                 switch(i){
  1847.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1848.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1849.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1850.                     case 3: decimals = find_number_of_digits(precision);
  1851.                         temp = get_string_argument(infile,1);
  1852.                         decimals = find_number_of_digits(precision);
  1853.                         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);
  1854.                         click_cnt++;reset();break;
  1855.                     default:break;
  1856.                 }
  1857.             }
  1858.             break;
  1859.         case CENTERSTRING:
  1860.         /*
  1861.          @ centerstring color,y-value,the text string
  1862.          @ title color,y-value,the text string
  1863.          @ draw a string centered on the canvas at y = y-value
  1864.          @ can not set "onclick" or "drag xy" (...)
  1865.          @ unicode supported: centerstring red,5,\\u2232
  1866.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1867.         */
  1868.             if( js_function[DRAW_CENTERSTRING] != 1 ){ js_function[DRAW_CENTERSTRING] = 1;}
  1869.             for(i=0;i<3;i++){
  1870.                 switch(i){
  1871.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1872.                     case 1: double_data[0] = get_real(infile,0);break; /* y in xrange*/
  1873.                     case 2: temp = get_string_argument(infile,1);
  1874.                             /* draw_text = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text) */
  1875.                             decimals = find_number_of_digits(precision);
  1876.                             string_length = snprintf(NULL,0,
  1877.                             "draw_centerstring(%d,%.*f,\"%s\",\"%s\",%.2f,\"%s\");\n",canvas_root_id,decimals,double_data[0],font_family,stroke_color,stroke_opacity,temp);
  1878.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1879.                             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);
  1880.                             add_to_buffer(tmp_buffer);
  1881.                             break;
  1882.                     default:break;
  1883.                 }
  1884.             }
  1885.             break;
  1886.         case MATHML:
  1887.         /*
  1888.         @ mathml x1,y1,x2,y2,mathml_string
  1889.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1890.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1891.         @ 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();"
  1892.         @ 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....
  1893.  
  1894.         */
  1895.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1896.             for(i=0;i<5;i++){
  1897.                 switch(i){
  1898.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1899.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1900.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1901.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1902.                     case 4: decimals = find_number_of_digits(precision);
  1903.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1904.                             temp = get_string(infile,1);
  1905.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1906.                             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);
  1907.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1908.                             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);
  1909.                             add_to_buffer(tmp_buffer);
  1910.                             /*
  1911.                              in case inputs are present , trigger adding the read_mathml()
  1912.                              if no other reply_format is defined
  1913.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1914.                              */
  1915.                             if(strstr(temp,"mathml0") != NULL){
  1916.                              if(reply_format == 0 ){reply_format = 16;} /* no other reply type is defined */
  1917.                             }
  1918.                             break;
  1919.                     default:break;
  1920.                 }
  1921.             }
  1922.             reset();
  1923.             break;
  1924.         case HTTP:
  1925.         /*
  1926.          @http x1,y1,x2,y2,http://some_adress.com
  1927.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1928.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1929.          @can not be 'set onclick' or 'drag xy'
  1930.         */
  1931.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}
  1932.             for(i=0;i<5;i++){
  1933.                 switch(i){
  1934.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1935.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1936.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1937.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1938.                     case 4: decimals = find_number_of_digits(precision);
  1939.                             temp = get_string(infile,1);
  1940.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1941.                             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);
  1942.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1943.                             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);
  1944.                             add_to_buffer(tmp_buffer);
  1945.                     break;
  1946.                 }
  1947.             }
  1948.             reset();
  1949.             break;
  1950.         case HTML:
  1951.         /*
  1952.          @ html x1,y1,x2,y2,html_string
  1953.          @ all tags are allowed
  1954.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1955.          @ 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.
  1956.  
  1957.          note: uses the same code as 'mathml'
  1958.         */
  1959.             break;
  1960.         case X_AXIS_STRINGS:
  1961.         /*
  1962.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1963.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1964.          @ use these x-axis values in stead of default xmin...xmax
  1965.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1966.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1967.          @ 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
  1968.          @ 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
  1969.         */
  1970.             temp = get_string(infile,1);
  1971.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1972.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1973.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1974.             use_axis_numbering = 1;
  1975.             break;
  1976.         case Y_AXIS_STRINGS:
  1977.         /*
  1978.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1979.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1980.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1981.          @ use these y-axis values in stead of default ymin...ymax
  1982.          @ 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
  1983.         */
  1984.             temp = get_string(infile,1);
  1985.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1986.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1987.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1988.             use_axis_numbering = 1;
  1989.             break;
  1990.  
  1991.         case AXIS_NUMBERING:
  1992.         /*
  1993.             @ axisnumbering
  1994.             @ keyword, no arguments required
  1995.         */
  1996.             use_axis_numbering = 1;
  1997.             break;
  1998.         case AXIS:
  1999.         /*
  2000.             @ axis
  2001.             @ keyword, no arguments required
  2002.  
  2003.         */
  2004.             use_axis = TRUE;
  2005.             break;
  2006.         case KILLSLIDER:
  2007.         /*
  2008.          @ killslider
  2009.          @ keyword, no arguments required
  2010.          @ ends grouping of object under a preciously defined slider
  2011.         */
  2012.             slider = 0;
  2013.             break;
  2014.         case SLIDER:
  2015.         /*
  2016.         @ slider start_value,end_value,width px,height px,type,label
  2017.         @ type: xy,x,y,angle
  2018.         @ if a value display is desired, use<br />type:xy display,x display,y display,angle radian,angle degree
  2019.         @ is a unit for x / y value display is needed, use commands 'xunit' and / or 'yunit'
  2020.         @ use commmand 'slider' before draggable/clickable objects.
  2021.         @ 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'
  2022.         @ amount of sliders is not limited.
  2023.         @ javascript:read_dragdrop(); will return an array with 'object_number:slider_value'
  2024.         @ type=xy: will produce a 2D 'slider' [rectangle width x heigh px] in your web page
  2025.         @ every draggable object may have it's own slider (no limit in amount of sliders)
  2026.         @ label: some slider text
  2027.         @ use fillcolor for slider ball
  2028.         @ use strokecolor for slider bar
  2029.         @ use fontfamily / fontcolor to set used fonts
  2030.         @ use opacity (only fill opacity will be used) to set transparency
  2031.         @ the slider canvas will be added to the 'tooltip div' : so incompatible with command tooltip ; setlimits etc
  2032.         */
  2033.             for(i=0; i<6 ; i++){
  2034.                 switch(i){
  2035.                     case 0: double_data[0] = get_real(infile,0);break; /* start value */
  2036.                     case 1: double_data[1] = get_real(infile,0);break; /* end value */
  2037.                     case 2: int_data[0] = (int)(get_real(infile,0));break; /* width */
  2038.                     case 3: int_data[1] = (int)(get_real(infile,0));break; /* height */
  2039.                     case 4: temp = get_string_argument(infile,0); /* type : xy,x,y,angle */
  2040.                     /* xy display*/
  2041.                     if(strstr(temp,"xy")!= 0){
  2042.                      slider = 4;
  2043.                     }
  2044.                     else
  2045.                     {
  2046.                      if(strstr(temp,"x") != 0){
  2047.                       slider = 1;
  2048.                      }
  2049.                      else
  2050.                      {
  2051.                       if(strstr(temp,"y") != 0){
  2052.                        slider = 2;
  2053.                       }
  2054.                       else
  2055.                       {
  2056.                        if(strstr(temp,"angle") != 0){ /* angle diplay radian */
  2057.                         slider = 3;
  2058.                        }
  2059.                        else
  2060.                        {
  2061.                         canvas_error("slider types may be : x , y , xy , angle");
  2062.                        }
  2063.                       }
  2064.                      }
  2065.                     }
  2066.                     if(strstr(temp,"display")!=0){
  2067.                      use_slider_display = 1; /* show x xy values in canvas window */
  2068.                     }
  2069.                     else
  2070.                     {
  2071.                      if(strstr(temp,"degree")!= 0){
  2072.                       use_slider_display = 2; /* show angle values in canvas window */
  2073.                      }
  2074.                      else
  2075.                      {
  2076.                       if(strstr(temp,"radian")!=0){
  2077.                        use_slider_display = 3; /* show radian values in canvas window */
  2078.                       }
  2079.                      }
  2080.                     }
  2081.                     if(use_slider_display != 0 && slider_cnt == 0){ /*add just once the display js-code */
  2082.                      add_slider_display(js_include_file,canvas_root_id,precision,font_size,font_color,stroke_opacity);
  2083.                     }
  2084.                     break;
  2085.                     case 5: /* some string used for slider description  */
  2086.                     slider_cnt++;
  2087.                     if(slider == 4){
  2088.                      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 );
  2089.                     }else{
  2090.                      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);
  2091.                     }
  2092.                     break;
  2093.                 }
  2094.              }
  2095.             break;
  2096.         case SGRAPH:
  2097.         /*
  2098.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  2099.          @ primitive implementation of a 'broken scale' graph...
  2100.          @ 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 />
  2101.          @ 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
  2102.         */
  2103.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  2104.             for(i = 0 ; i < 8 ;i++){
  2105.                 switch(i){
  2106.                     case 0:double_data[0] = get_real(infile,0);break;
  2107.                     case 1:double_data[1] = get_real(infile,0);break;
  2108.                     case 2:double_data[2] = get_real(infile,0);break;
  2109.                     case 3:double_data[3] = get_real(infile,0);break;
  2110.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  2111.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  2112.                     case 6:stroke_color = get_color(infile,0);break;
  2113.                     case 7:font_color = get_color(infile,1);
  2114.                     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);
  2115.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2116.                     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);
  2117.                     add_to_buffer(tmp_buffer);
  2118.                     break;
  2119.                     default:break;
  2120.                 }
  2121.             }
  2122.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  2123.             break;
  2124.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  2125.         /*
  2126.          @ grid step_x,step_y,gridcolor
  2127.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  2128.          @ 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
  2129.          @ 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)
  2130.          @ can not be set "onclick" or "drag xy"
  2131.          @ 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')
  2132.          @ 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')
  2133.          @ 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')
  2134.         */
  2135.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  2136.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  2137.             for(i=0;i<4;i++){
  2138.                 switch(i){
  2139.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  2140.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  2141.                     case 2:
  2142.                     if( use_axis == TRUE ){
  2143.                         stroke_color = get_color(infile,0);
  2144.                         done = FALSE;
  2145.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  2146.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  2147.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  2148.                         fill_color = get_color(infile,1); /* used as axis_color*/
  2149.                     }
  2150.                     else
  2151.                     {
  2152.                         int_data[0] = 1;
  2153.                         int_data[1] = 1;
  2154.                         stroke_color = get_color(infile,1);
  2155.                         fill_color = stroke_color;
  2156.                     }
  2157.                     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 !");}
  2158.                     /* set snap_x snap_y values in pixels */
  2159.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  2160.                     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);
  2161.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2162.                     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);
  2163.                     add_to_buffer(tmp_buffer);
  2164.                     break;
  2165.                 }
  2166.             }
  2167.             reset();
  2168.             break;
  2169.         case OPACITY:
  2170.         /*
  2171.         @ opacity 0-255,0-255
  2172.         @
  2173.         */
  2174.             for(i = 0 ; i<2;i++){
  2175.                 switch(i){
  2176.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  2177.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  2178.                     default: break;
  2179.                 }
  2180.             }
  2181.             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 ? */
  2182.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  2183.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  2184.             break;
  2185.         case ROTATE:
  2186.         /*
  2187.          @rotate rotation_angle
  2188.          @angle in degrees
  2189.         */
  2190.             use_rotate = TRUE;
  2191.             angle = -1*(get_real(infile,1));/* -1 : to be compatible with Flydraw... */
  2192.             break;
  2193.         case KILLAFFINE:
  2194.         /*
  2195.         @ killaffine
  2196.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  2197.         */
  2198.             use_affine = FALSE;
  2199.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2200.             break;
  2201.         case AFFINE:
  2202.         /*
  2203.          @affine a,b,c,d,tx,ty
  2204.          @ defines a transformation matrix for subsequent objects
  2205.          @ use keyword 'killaffine' to end the transformation
  2206.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  2207.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  2208.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  2209.          @ a : Scales the drawings horizontally
  2210.          @ b : Skews the drawings horizontally
  2211.          @ c : Skews the drawings vertically
  2212.          @ d : Scales the drawings vertically
  2213.          @ tx: Moves the drawings horizontally in xrange coordinate system
  2214.          @ ty: Moves the drawings vertically in yrange coordinate system
  2215.          @ the data precision is 2 decimals (printf : %2.f)
  2216.         */
  2217.             for(i = 0 ; i<6;i++){
  2218.                 switch(i){
  2219.                     case 0: double_data[0] = get_real(infile,0);break;
  2220.                     case 1: double_data[1] = get_real(infile,0);break;
  2221.                     case 2: double_data[2] = get_real(infile,0);break;
  2222.                     case 3: double_data[3] = get_real(infile,0);break;
  2223.                     case 4: double_data[4] = get_real(infile,0);break;
  2224.                     case 5: double_data[5] = get_real(infile,1);
  2225.                         use_affine = TRUE;
  2226.                         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));
  2227.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2228.                         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));
  2229.                         break;
  2230.                     default: break;
  2231.                 }
  2232.             }
  2233.         break;
  2234.         case KILLTRANSLATION:
  2235.         /*
  2236.          killtranslation
  2237.         */
  2238.             use_affine = FALSE;
  2239.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  2240.             break;
  2241.         case TRANSLATION:
  2242.         /*
  2243.          @translation tx,ty
  2244.          @will translate the next object tx in xrange and ty in yrange
  2245.          @uase command 'killtranstation' to end the command
  2246.         */
  2247.             for(i = 0 ; i<2;i++){
  2248.                 switch(i){
  2249.                     case 0: double_data[0] = get_real(infile,0);break;
  2250.                     case 1: double_data[1] = get_real(infile,1);
  2251.                         use_affine = TRUE;
  2252.                         string_length = snprintf(NULL,0, "[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2253.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  2254.                         snprintf(affine_matrix,string_length,"[1,0,0,1,%.2f,%.2f] ",double_data[0]*xsize/(xmax - xmin),-1*double_data[1]*ysize/(ymax - ymin));
  2255.                         break;
  2256.                     default: break;
  2257.                 }
  2258.             }
  2259.         break;
  2260.  
  2261.         case DASHED:
  2262.         /*
  2263.         @ keyword "dashed"
  2264.         @ next object will be drawn with a dashed line
  2265.         @ change dashing scheme by using command "dashtype int,int)
  2266.         */
  2267.             use_dashed = TRUE;
  2268.             break;
  2269.         case FILLED:
  2270.         /*
  2271.         @ keyword "filled"
  2272.         @ the next 'fillable' object (only) will be filled
  2273.         @ use command "fillcolor color" to set fillcolor
  2274.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  2275.         @ 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 !
  2276.         */
  2277.             use_filled = TRUE;
  2278.             break;
  2279.         case STYLE:
  2280.         /*
  2281.          @highlight color,opacity,linewidth
  2282.          @ NOT IMPLEMENTED
  2283.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  2284.         */
  2285.             break;
  2286.         case FILLCOLOR:
  2287.         /*
  2288.         @ fillcolor colorname or #hex
  2289.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  2290.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  2291.         */
  2292.             fill_color = get_color(infile,1);
  2293.             break;
  2294.         case STROKECOLOR:
  2295.         /*
  2296.         @ strokecolor colorname or #hex
  2297.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  2298.         */
  2299.             stroke_color = get_color(infile,1);
  2300.             break;
  2301.         case BGIMAGE:
  2302.         /*
  2303.          @bgimage image_location
  2304.          @use an image as background .<br />(we use the background of 'canvas_div' )
  2305.          @the background image will be resized to match "width = xsize" and "height = ysize"
  2306.         */
  2307.         URL = get_string(infile,1);
  2308.         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);
  2309.             break;
  2310.         case BGCOLOR:
  2311.         /*
  2312.          @bgcolor colorname or #hex
  2313.          @use this color as background of the "div" containing the canvas(es)
  2314.         */
  2315.         /* [255,255,255]*/
  2316.             bgcolor = get_string(infile,1);
  2317.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  2318.                 int found = 0;
  2319.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  2320.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  2321.                         bgcolor = colors[i].hex;
  2322.                         found = 1;
  2323.                         break;
  2324.                     }
  2325.                 }
  2326.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  2327.             }
  2328.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  2329.             break;
  2330.         case COPY:
  2331.         /*
  2332.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  2333.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  2334.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  2335.         @ [filename] is the URL of the image
  2336.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2337.         @ 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
  2338.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2339.  
  2340.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2341.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  2342.         */
  2343.             for(i = 0 ; i<7;i++){
  2344.                 switch(i){
  2345.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  2346.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  2347.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  2348.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  2349.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  2350.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  2351.                     case 6: URL = get_string(infile,1);
  2352.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  2353.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  2354.                             if( drag_type > -1 ){
  2355.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2356.                                 if(reply_format == 0 ){reply_format = 20;}
  2357.                                 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);
  2358.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2359.                                 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);
  2360.                                 drag_type = -1;
  2361.                                 ext_img_cnt++;
  2362.                             }
  2363.                             else
  2364.                             {
  2365.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2366.                                 /*
  2367.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  2368.                                 */
  2369.                                 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]);
  2370.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2371.                                 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]);
  2372.                             }
  2373.                             add_to_buffer(tmp_buffer);
  2374.                             break;
  2375.                     default: break;
  2376.                 }
  2377.             }
  2378.             reset();
  2379.             break;
  2380. /*
  2381. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  2382. img     Specifies the image, canvas, or video element to use
  2383. sx      The x coordinate where to start clipping : x1 = int_data[0]
  2384. sy      The y coordinate where to start clipping : x2 = int_data[1]
  2385. swidth  The width of the clipped image : int_data[2] - int_data[0]
  2386. sheight The height of the clipped image : int_data[3] - int_data[1]
  2387. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  2388. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  2389. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  2390. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  2391. */
  2392.         case COPYRESIZED:
  2393.         /*
  2394.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  2395.         @ 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
  2396.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  2397.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  2398.         @ 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
  2399.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  2400.         */
  2401.             for(i = 0 ; i<9;i++){
  2402.                 switch(i){
  2403.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  2404.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  2405.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  2406.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  2407.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  2408.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  2409.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  2410.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  2411.                     case 8: URL = get_string(infile,1);
  2412.                             if( drag_type > -1 ){
  2413.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  2414.                                 if(reply_format == 0 ){reply_format = 20;}
  2415.                                 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);
  2416.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2417.                                 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);
  2418.                                 drag_type = -1;
  2419.                                 ext_img_cnt++;
  2420.                             }
  2421.                             else
  2422.                             {
  2423.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  2424.                                 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]);
  2425.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2426.                                 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]);
  2427.                             }
  2428.                             add_to_buffer(tmp_buffer);
  2429.                     default: break;
  2430.                 }
  2431.             }
  2432.             reset();
  2433.             break;
  2434.         case CLEARBUTTON:
  2435.         /*
  2436.          @clearbutton value
  2437.          @adds a button to clear the userdraw canvas with text 'value'
  2438.          @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
  2439.          @uses the tooltip placeholder div element: may not be used with command 'intooltip'
  2440.          @use command 'inputstyle' to style the button...
  2441.         */
  2442.             add_clear_button(js_include_file,canvas_root_id,input_style,get_string(infile,1));
  2443.         break;
  2444.         case INPUTSTYLE:
  2445.         /*
  2446.         @ inputstyle style_description
  2447.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  2448.         */
  2449.             input_style = get_string(infile,1);
  2450.             break;
  2451.         case INPUT:
  2452.         /*
  2453.          @ input x,y,size,editable,value
  2454.          @ to set inputfield "readonly", use editable = 0
  2455.          @ only active inputfields (editable = 1) will be read with read_canvas();
  2456.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2457.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  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_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  2461.             for(i = 0 ; i<5;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; /* size */
  2466.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2467.                     case 4:
  2468.                             temp = get_string_argument(infile,1);
  2469.                             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);
  2470.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2471.                             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);
  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 TEXTAREA:
  2481.         /*
  2482.          @ textarea x,y,cols,rows,readonly,value
  2483.          @ may be further controlled by "inputstyle"
  2484.          @ if "$status=done"  (e.g. in answer.phtml) the inputfield will be clearedand set readonly<br />Override this by keyword 'status'
  2485.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  2486.         */
  2487.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}
  2488.             for(i = 0 ; i<6;i++){
  2489.                 switch(i){
  2490.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  2491.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  2492.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  2493.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  2494.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  2495.                     case 5: temp = get_string_argument(infile,1);
  2496.                             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);
  2497.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2498.                             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);
  2499.                             add_to_buffer(tmp_buffer);
  2500.                             input_cnt++;break;
  2501.                     default: break;
  2502.                 }
  2503.             }
  2504.             if(reply_format == 0 ){reply_format = 15;}
  2505.             reset();
  2506.             break;
  2507.         case MOUSE_PRECISION:
  2508.         /*
  2509.             @ precision int
  2510.             @ 1 = no decimals ; 10 = 1 decimal ; 100 = 2 decimals etc
  2511.             @ may be used / changed before every object
  2512.             @ In case of user interaction (like 'userdraw') this value will be used to determine the amount of decimals in the reply / answer
  2513.         */
  2514.             precision = (int) (get_real(infile,1));
  2515.             if(precision < 1 ){precision = 1;};
  2516.             break;
  2517.         case SETLIMITS:
  2518.         /*
  2519.             @setlimits
  2520.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  2521.             @may be used for inputfield based zooming / panning
  2522.             @use command xlabel / ylabel to change text from xmin to 'xlabel'min etc
  2523.             @note:the input value will not be checked on validity
  2524.         */
  2525.             if( use_safe_eval == FALSE){use_safe_eval = TRUE;add_safe_eval(js_include_file);} /* just once */
  2526.             add_setlimits(js_include_file,canvas_root_id);
  2527.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  2528.             use_pan_and_zoom = TRUE;
  2529.             done = TRUE;
  2530.             break;
  2531.         case ZOOM:
  2532.         /*
  2533.          @ zoom button_color
  2534.          @ introduce a controlpanel at the lower right corner
  2535.          @ 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
  2536.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  2537.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  2538.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  2539.          @ NOTE: use command 'zoom' at the end of your script code (the same is true for commanmd 'mouse')
  2540.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2541.          @ 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 !!
  2542.         */
  2543.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2544.             use_pan_and_zoom = TRUE;
  2545.             stroke_color = get_color(infile,1);
  2546.             /* we use BG_CANVAS (0) */
  2547.             add_zoom_buttons(js_include_file,canvas_root_id,stroke_color,stroke_opacity);
  2548.             done = TRUE;
  2549.             break;
  2550.         case ONCLICK:
  2551.         /*
  2552.          @ onclick
  2553.          @ keyword, no arguments
  2554.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2555.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2556.          @ NOTE: not all objects may be set clickable
  2557.         */
  2558.             fprintf(js_include_file,"use_dragdrop_reply = true;");
  2559.             onclick = 1;
  2560.             break;
  2561.         case DRAG:
  2562.         /*
  2563.          @ drag [x][y][xy]
  2564.          @ the next object will be draggable in x / y / xy direction
  2565.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2566.          @ 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' !
  2567.          @ 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)
  2568.          @ use keywordd 'snaptogrid' , 'xsnaptogrid' or 'ysnaptogrid' to switch from free to discrete movement
  2569.          @ 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.
  2570.          @ 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 !!
  2571.         */
  2572.             temp = get_string(infile,1);
  2573.             if(strstr(temp,"xy") != NULL ){
  2574.                 drag_type = 0;
  2575.             }
  2576.             else
  2577.             {
  2578.                 if(strstr(temp,"x") != NULL ){
  2579.                     drag_type = 1;
  2580.                 }
  2581.                 else
  2582.                 {
  2583.                     drag_type = 2;
  2584.                 }
  2585.             }
  2586.             fprintf(js_include_file,"dragdrop_precision = %d;use_dragdrop_reply = true;",precision);
  2587.             onclick = 2;
  2588.        
  2589.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2590.             break;
  2591.         case BLINK:
  2592.         /*
  2593.          @ blink time(seconds)
  2594.          @ NOT IMPLEMETED -YET
  2595.         */
  2596.             break;
  2597.         case XUNIT:
  2598.         /*
  2599.          @ xunit some_unit_for_x-values
  2600.          @ unicode allowed (no html code)
  2601.          @ use together with command mousex
  2602.          @ will display the cursor x-coordinate 'unit'
  2603.         */
  2604.             fprintf(js_include_file,"unit_x = \"%s\";",get_string(infile,1));
  2605.             break;
  2606.         case YUNIT:
  2607.         /*
  2608.          @ yunit some_unit_for_y-values
  2609.          @ unicode allowed (no html code)
  2610.          @ use together with command mousex
  2611.          @ will display the cursor y-coordinate 'unit'
  2612.         */
  2613.             fprintf(js_include_file,"unit_y = \"%s\";",get_string(infile,1));
  2614.             break;
  2615.         case MOUSE_DISPLAY:
  2616.         /*
  2617.          @display x|y|xy|degree|radius,color,fontsize
  2618.          @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)
  2619.          @use commands 'xunit' and / or 'yunit' to add the units to the mouse values
  2620.          @just like commands 'mouse','mousex','mousey','mouse_degree'...only other name)
  2621.         */
  2622.         temp = get_string_argument(infile,0);
  2623.         if( strstr(temp,"xy") != NULL ){
  2624.             int_data[0] = 2;
  2625.         }else{
  2626.             if( strstr(temp,"y") != NULL ){
  2627.                 int_data[0] = 1;
  2628.             }else{
  2629.                 if( strstr(temp,"x") != NULL ){
  2630.                     int_data[0] = 0;
  2631.                 }else{
  2632.                     if(strstr(temp,"degree") != NULL){
  2633.                         int_data[0] = 3;
  2634.                     }else{
  2635.                         if(strstr(temp,"radius") != NULL){
  2636.                             int_data[0] = 4;
  2637.                         }else{
  2638.                             int_data[0] = 2;
  2639.                         }
  2640.                     }
  2641.                 }
  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,int_data[0]);
  2649.         break;
  2650.         case MOUSE_DEGREE:
  2651.         /*
  2652.          @ mouse_degree color,fontsize
  2653.          @ 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
  2654.          @ The angle is positive in QI and QIII and the angle value is negative in QII and QIV
  2655.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2656.  
  2657.         */
  2658.             stroke_color = get_color(infile,0);
  2659.             font_size = (int) (get_real(infile,1));
  2660.             tmp_buffer = my_newmem(26);
  2661.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2662.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,3);
  2663.             break;
  2664.         case MOUSEX:
  2665.         /*
  2666.          @ mousex color,fontsize
  2667.          @ will display the cursor x-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2668.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2669.  
  2670.         */
  2671.             stroke_color = get_color(infile,0);
  2672.             font_size = (int) (get_real(infile,1));
  2673.             tmp_buffer = my_newmem(26);
  2674.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2675.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,0);
  2676.             break;
  2677.         case MOUSEY:
  2678.         /*
  2679.          @ mousey color,fontsize
  2680.          @ will display the cursor y-coordinate in 'color' and 'font size'<br /> using default fontfamily Ariel
  2681.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for command 'zoom')
  2682.  
  2683.         */
  2684.             stroke_color = get_color(infile,0);
  2685.             font_size = (int) (get_real(infile,1));
  2686.             tmp_buffer = my_newmem(26);
  2687.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2688.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,1);
  2689.             break;
  2690.         case MOUSE:
  2691.         /*
  2692.          @ mouse color,fontsize
  2693.          @ will display the cursor (x:y) coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2694.          @ NOTE: use command 'mouse' at the end of your script code (the same is true for commanmd 'zoom')
  2695.  
  2696.         */
  2697.             stroke_color = get_color(infile,0);
  2698.             font_size = (int) (get_real(infile,1));
  2699.             tmp_buffer = my_newmem(26);
  2700.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2701.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity,2);
  2702.             break;
  2703.         case INTOOLTIP:
  2704.             /*
  2705.             @ intooltip link_text
  2706.             @ link_text is a single line (span-element)
  2707.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2708.             @ link_text may contain HTML markup
  2709.             @ the canvas will be displayed in a tooltip on 'link_text'
  2710.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2711.             */
  2712.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2713.             use_tooltip = TRUE;
  2714.             tooltip_text = get_string(infile,1);
  2715.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2716.             break;
  2717.         case AUDIO:
  2718.         /*
  2719.         @ audio x,y,w,h,loop,visible,audiofile location
  2720.         @ x,y : left top corner of audio element (in xrange / yrange)
  2721.         @ w,y : width and height in pixels
  2722.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2723.         @ visible : 0 or 1 (1 = show controls)
  2724.         @ audio format may be in *.mp3 or *.ogg
  2725.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2726.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2727.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2728.         @ 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 />
  2729.         */
  2730.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2731.             for(i=0;i<7;i++){
  2732.                 switch(i){
  2733.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2734.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2735.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2736.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2737.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2738.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2739.                     case 6:
  2740.                     temp = get_string(infile,1);
  2741.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2742.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2743.                     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);
  2744.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2745.                     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);
  2746.                     add_to_buffer(tmp_buffer);
  2747.                     break;
  2748.                     default:break;
  2749.                 }
  2750.             }
  2751.             reset();
  2752.             break;
  2753.         case VIDEO:
  2754.         /*
  2755.         @ video x,y,w,h,videofile location
  2756.         @ x,y : left top corner of audio element (in xrange / yrange)
  2757.         @ w,y : width and height in pixels
  2758.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2759.         @ video format may be in *.mp4 (todo:other formats)
  2760.         */
  2761.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2762.             for(i=0;i<5;i++){
  2763.                 switch(i){
  2764.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2765.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2766.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2767.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2768.                     case 4: temp = get_string(infile,1);
  2769.                             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);
  2770.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2771.                             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);
  2772.                             add_to_buffer(tmp_buffer);
  2773.                             break;
  2774.                     default:break;
  2775.                 }
  2776.             }
  2777.             reset();
  2778.             break;
  2779.         case HATCHFILL:
  2780.         /*
  2781.         @ hatchfill x0,y0,dx,dy,color
  2782.         @ x0,y0 in xrange / yrange
  2783.         @ distances dx,dy in pixels
  2784.         */
  2785.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2786.             for(i=0;i<5;i++){
  2787.                 switch(i){
  2788.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2789.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2790.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2791.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2792.                     case 4: stroke_color = get_color(infile,1);
  2793.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2794.                     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);
  2795.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2796.                     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);
  2797.                     add_to_buffer(tmp_buffer);
  2798.                     break;
  2799.                     default:break;
  2800.                 }
  2801.             }
  2802.             reset();
  2803.         break;
  2804.         case DIAMONDFILL:
  2805.         /*
  2806.         @ diamondfill x0,y0,dx,dy,color
  2807.         @ x0,y0 in xrange / yrange
  2808.         @ distances dx,dy in pixels
  2809.         */
  2810.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 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.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2819.                     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);
  2820.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2821.                     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);
  2822.                     add_to_buffer(tmp_buffer);
  2823.                     break;
  2824.                     default:break;
  2825.                 }
  2826.             }
  2827.             reset();
  2828.         break;
  2829.         case GRIDFILL:
  2830.         /*
  2831.         @ gridfill x0,y0,dx,dy,color
  2832.         @ x0,y0 in xrange / yrange
  2833.         @ distances dx,dy in pixels
  2834.         @ a draggable object may snap_to_grid (using keywords xysnaptogrid,xsnaprogrid, ysnaptogrid)
  2835.         @ userdraw object may snap_to_grid
  2836.         */
  2837.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2838.             for(i=0;i<5;i++){
  2839.                 switch(i){
  2840.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2841.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2842.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2843.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2844.                     case 4: stroke_color = get_color(infile,1);
  2845.                     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);
  2846.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2847.                     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);
  2848.                     add_to_buffer(tmp_buffer);
  2849.                     break;
  2850.                     default:break;
  2851.                 }
  2852.             }
  2853.             reset();
  2854.         break;
  2855.         case DOTFILL:
  2856.         /*
  2857.         @ dotfill x0,y0,dx,dy,color
  2858.         @ x0,y0 in xrange / yrange
  2859.         @ distances dx,dy in pixels
  2860.         @ radius of dots is linewidth
  2861.         */
  2862.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2863.             for(i=0;i<5;i++){
  2864.                 switch(i){
  2865.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2866.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2867.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2868.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2869.                     case 4: stroke_color = get_color(infile,1);
  2870.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2871.                     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);
  2872.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2873.                     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);
  2874.                     add_to_buffer(tmp_buffer);
  2875.                     break;
  2876.                     default:break;
  2877.                 }
  2878.             }
  2879.             reset();
  2880.         break;
  2881.         case IMAGEFILL:
  2882.         /*
  2883.         @ imagefill dx,dy,image_url
  2884.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2885.         @ After pattern filling ,the fill-color should be reset !
  2886.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2887.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2888.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2889.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2890.         */
  2891.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2892.             for(i=0 ;i < 3 ; i++){
  2893.                 switch(i){
  2894.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2895.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2896.                     case 2: URL = get_string_argument(infile,1);
  2897.                             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);
  2898.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2899.                             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);
  2900.                             add_to_buffer(tmp_buffer);
  2901.                     break;
  2902.                 }
  2903.             }
  2904.             reset();
  2905.         break;
  2906.         case FILLTOBORDER:
  2907.         /*
  2908.         @ filltoborder x,y,bordercolor,color
  2909.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2910.         @ any other color will not act as border to the bucket fill
  2911.         @ use this command  after all boundary objects are declared.
  2912.         @ 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..
  2913.         */
  2914.             for(i=0 ;i < 4 ; i++){
  2915.                 switch(i){
  2916.                     case 0:double_data[0] = get_real(infile,0);break;
  2917.                     case 1:double_data[1] = get_real(infile,0);break;
  2918.                     case 2:bgcolor = get_color(infile,0);break;
  2919.                     case 3:fill_color = get_color(infile,1);
  2920.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2921.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2922.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2923.                            }
  2924.                            decimals = find_number_of_digits(precision);
  2925.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2926.                            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));
  2927.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2928.                            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));
  2929.                            add_to_buffer(tmp_buffer);
  2930.                            break;
  2931.                     default:break;
  2932.                 }
  2933.             }
  2934.             reset();
  2935.         break;
  2936.         case FLOODFILL:
  2937.         /*
  2938.         @ floodfill x,y,color
  2939.         @ alternative syntax: fill x,y,color
  2940.         @ fill the region of point (x:y) with color 'color'
  2941.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2942.         @ use this command  after all boundary objects are declared.
  2943.         @ Use command 'clickfill,color' for user click driven flood fill.
  2944.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2945.         @ 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..
  2946.         */
  2947.             for(i=0 ;i < 4 ; i++){
  2948.                 switch(i){
  2949.                     case 0:double_data[0] = get_real(infile,0);break;
  2950.                     case 1:double_data[1] = get_real(infile,0);break;
  2951.                     case 2:fill_color = get_color(infile,1);
  2952.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2953.                                 js_function[DRAW_FLOODFILL] = 1;
  2954.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2955.                            }
  2956.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2957.                            /* we need to set a timeout: the canvas is not yet draw in memory? when floodfill is called directly... */
  2958.                            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));
  2959.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2960.                            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));
  2961.                            add_to_buffer(tmp_buffer);
  2962.                            break;
  2963.                     default:break;
  2964.                 }
  2965.             }
  2966.             reset();
  2967.         break;
  2968.         case CLICKFILLMARGE:
  2969.             clickfillmarge = (int) (get_real(infile,1));
  2970.             break;
  2971.         /*
  2972.         @ clickfillmarge int
  2973.         @ default 20 (pixels)
  2974.         @ 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[])
  2975.         */
  2976.         case CLICKFILL:
  2977.         /*
  2978.         @ clickfill fillcolor
  2979.         @ user left mouse click will floodfill the area with fillcolor
  2980.         @ multiple areas may be coloured
  2981.         @ 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)
  2982.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2983.         @ background color of main div may be set by using command "bgcolor color"
  2984.         @ may not be combined with command "userdraw"
  2985.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2986.         */
  2987.          fill_color = get_color(infile,1);
  2988.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2989.             js_function[DRAW_FLOODFILL] = 1;
  2990.             add_js_floodfill(js_include_file,canvas_root_id);
  2991.          }
  2992.          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));
  2993.          add_read_canvas(canvas_root_id,1,reply_precision);
  2994.          reset();
  2995.         break;
  2996.         case SETPIXEL:
  2997.         /*
  2998.         @ setpixel x,y,color
  2999.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  3000.         @ pixels can not be dragged or clicked
  3001.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  3002.         */
  3003.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  3004.             for(i=0;i<3;i++){
  3005.                 switch(i){
  3006.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  3007.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  3008.                     case 2: stroke_color = get_color(infile,1);
  3009.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  3010.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3011.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  3012.                            add_to_buffer(tmp_buffer);
  3013.                            break;
  3014.                     default:break;
  3015.                 }
  3016.             }
  3017.             reset();
  3018.         break;
  3019.         case PIXELSIZE:
  3020.         /*
  3021.         @ pixelsize int
  3022.         @ in case you want to deviate from default pixelsize = 1...
  3023.         */
  3024.             pixelsize = (int) get_real(infile,1);
  3025.         break;
  3026.         case PIXELS:
  3027.         /*
  3028.         @ pixels color,x1,y1,x2,y2,x3,y3...
  3029.         @ Draw  "points" with diameter 1 pixel
  3030.         @ pixels can not be dragged or clicked
  3031.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  3032.         */
  3033.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  3034.             stroke_color=get_color(infile,0);
  3035.             i=0;
  3036.             c=0;
  3037.             while( ! done ){     /* get next item until EOL*/
  3038.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  3039.                 for( c = 0 ; c < 2; c++){
  3040.                     if(c == 0 ){
  3041.                         double_data[i] = get_real(infile,0);
  3042.                         i++;
  3043.                     }
  3044.                     else
  3045.                     {
  3046.                         double_data[i] = get_real(infile,1);
  3047.                         i++;
  3048.                     }
  3049.                 }
  3050.             }
  3051.             decimals = find_number_of_digits(precision);
  3052.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  3053.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3054.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3055.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  3056.             add_to_buffer(tmp_buffer);
  3057.             reset();
  3058.             break;
  3059.         case REPLYFORMAT:
  3060.         /*
  3061.         @ replyformat number
  3062.         @ use number=-1 to deactivate the js-functions read_canvas() and read_dragdrop()
  3063.         @ default values should be fine !
  3064.         @ use command 'precision [0,1,10,100,1000,10000...]' before command 'replyformat' to set the desired number of decimals in the student reply / drawing
  3065.         @ the last value for 'precision int' will be used to calculate  the reply coordinates, if needed (read_canvas();)
  3066.         @ 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>
  3067.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  3068.         */
  3069.          reply_format = (int) get_real(infile,1);
  3070.          reply_precision = precision;
  3071.         break;
  3072.         case LEGENDCOLORS:
  3073.         /*
  3074.         @ legendcolors color1:color2:color3:...:color_n
  3075.         @ 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 />
  3076.         @ make sure the number of colours match the number of legend items
  3077.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  3078.         */
  3079.             if(legend_cnt == -1){canvas_error("use command \"legend\" before command \"legendcolors\" ! ");}
  3080.             temp = get_string(infile,1);
  3081.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3082.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",legend_cnt,temp);
  3083.             break;
  3084.         case LEGEND:
  3085.         /*
  3086.         @ legend string1:string2:string3....string_n
  3087.         @ will be used to create a legend for a graph
  3088.         @ also see command 'piechart'
  3089.         @ will use the same colors per default as used in the graphs : use command 'legendcolors' to override the default
  3090.         */
  3091.             temp = get_string(infile,1);
  3092.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3093.             legend_cnt++; /* attention :starts with -1 : it will be used in piechart etc */
  3094.             fprintf(js_include_file,"var legend%d = [\"%s\"];",legend_cnt,temp);
  3095.             break;
  3096.         case XLABEL:
  3097.         /*
  3098.         @ xlabel some_string
  3099.         @ will be used to create a label for the x-axis (label is in quadrant I)
  3100.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3101.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3102.         */
  3103.             temp = get_string(infile,1);
  3104.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  3105.             break;
  3106.         case YLABEL:
  3107.         /*
  3108.         @ ylabel some_string
  3109.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  3110.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  3111.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  3112.         */
  3113.             temp = get_string(infile,1);
  3114.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  3115.             break;
  3116.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  3117.         /*
  3118.         @ linegraph x1:y1;x2:y2...x_n:y_n
  3119.         @ will plot your data in a graph
  3120.         @ may only to be used together with command 'grid'
  3121.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3122.         @ use command 'legend' to provide an optional legend in right-top-corner
  3123.         @ also see command 'piechart'
  3124.         @ multiple linegraphs may be used in a single plot
  3125.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3126.         @ <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>
  3127.         */
  3128.             temp = get_string(infile,1);
  3129.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  3130.             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);
  3131.             linegraph_cnt++;
  3132.             reset();
  3133.             break;
  3134.         case BARCHART:
  3135.         /*
  3136.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  3137.         @ will be used to create a legend for bar graph
  3138.         @ may only to be used together with command 'grid'
  3139.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  3140.         @ use command 'legend' to provide an optional legend in right-top-corner
  3141.         @ also see command 'piechart'
  3142.         @ NOTE: your arguments are not checked by canvasdraw : use your javascript console in case of trouble...
  3143.         */
  3144.             temp = get_string(infile,1);
  3145.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  3146.             fprintf(js_include_file,"var barchart_%d = [\"%s\"];",barchart_cnt,temp);
  3147.             barchart_cnt++;
  3148.             reset();
  3149.             break;
  3150.         case CLOCK:
  3151.         /*
  3152.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  3153.         @ use command 'opacity stroke-opacity,fill-opacity' to adjust foreground (stroke) and background (fill) transparency
  3154.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  3155.         @ 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
  3156.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  3157.         @ 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>
  3158.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  3159.         @ no combinations with other reply_types allowed, for now
  3160.         @ 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
  3161.         @ 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
  3162.         */
  3163.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  3164.  
  3165.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  3166.             for(i=0;i<9;i++){
  3167.              switch(i){
  3168.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  3169.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  3170.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  3171.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  3172.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  3173.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  3174.               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 */
  3175.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  3176.                 switch(int_data[7]){
  3177.                     case 0:break;
  3178.                     case 1:if(clock_cnt == 0){
  3179.                                 if( reply_format == 0 ){
  3180.                                      reply_format = 18; /* user sets clock */
  3181.                                     /* 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");
  3182.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3183.                                      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");
  3184.                                      add_to_buffer(tmp_buffer);
  3185.                                     */
  3186.                                      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");
  3187.                                 }
  3188.                                 else
  3189.                                 {
  3190.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  3191.                                 }
  3192.                              }
  3193.                             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);
  3194.                     break;
  3195.                     case 2:if( reply_format == 0 ){
  3196.                                 reply_format = 19; /* "onclick */
  3197.                                 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 ");
  3198.                             }
  3199.                             else
  3200.                             {
  3201.                                 if( reply_format != 19){
  3202.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  3203.                                  }
  3204.                             }
  3205.                      break;
  3206.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  3207.                 }
  3208.                 break;
  3209.                 case 8:
  3210.                         if(clock_cnt == 0 ){ /* set opacity's just once .... it should be a argument to clock() , for now it's OK */
  3211.                             fprintf(js_include_file,"var clock_bg_opacity = %.2f;var clock_fg_opacity = %.2f;",fill_opacity,stroke_opacity);
  3212.                         }
  3213.                         temp = get_string(infile,1);
  3214.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  3215.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  3216.                         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);
  3217.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3218.                         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);
  3219.                         add_to_buffer(tmp_buffer);
  3220.                         clock_cnt++;
  3221.                         break;
  3222.                 default:break;
  3223.              }
  3224.             }
  3225.             break;
  3226.         case PIECHART:
  3227.         /*
  3228.         @ piechart xc,yc,radius,'data+colorlist'
  3229.         @ (xc : yc) center of circle diagram in xrange/yrange
  3230.         @ radius in pixels
  3231.         @ 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
  3232.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  3233.         @ the number of colors must match the number of data.
  3234.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  3235.         @ 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.
  3236.         */
  3237.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}
  3238.             for(i=0;i<5;i++){
  3239.                 switch(i){
  3240.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  3241.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  3242.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  3243.                     case 3: temp = get_string(infile,1);
  3244.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  3245.                             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);
  3246.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  3247.                             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);
  3248.                             add_to_buffer(tmp_buffer);
  3249.                            break;
  3250.                     default:break;
  3251.                 }
  3252.             }
  3253.             reset();
  3254.         break;
  3255.         case STATUS:
  3256.         /*
  3257.         @status
  3258.         @keyword
  3259.         @alernative keyword: nostatus
  3260.         @used to override the effects of "status=done" in wims (answer.phtml)
  3261.         @affects inputfields / textarea's in canvasimage and all userdraw based commands
  3262.         @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'
  3263.         */
  3264.  
  3265.             fprintf(js_include_file,"\nwims_status=\"waiting\";\n");
  3266.             break;
  3267.         case XLOGBASE:
  3268.         /*
  3269.         @ xlogbase number
  3270.         @ sets the logbase number for the x-axis
  3271.         @ default value 10
  3272.         @ use together with commands xlogscale / xylogscale
  3273.         */
  3274.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  3275.             break;
  3276.         case YLOGBASE:
  3277.         /*
  3278.         @ ylogbase number
  3279.         @ sets the logbase number for the y-axis
  3280.         @ default value 10
  3281.         @ use together with commands ylogscale / xylogscale
  3282.         */
  3283.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  3284.             break;
  3285.         case XLOGSCALE:
  3286.         /*
  3287.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  3288.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3289.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  3290.          @ the linewidth is set using command 'linewidth int'
  3291.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3292.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  3293.          @ 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>
  3294.          @ note: the complete canvas will be used for the 'log paper'
  3295.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3296.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3297.          @ 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')
  3298.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3299.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3300.         */
  3301.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3302.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  3303.             for(i=0;i<4;i++){
  3304.                 switch(i){
  3305.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3306.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3307.                     case 2: stroke_color = get_color(infile,0); break;
  3308.                     case 3: fill_color = get_color(infile,1);
  3309.                         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);
  3310.                         tmp_buffer = my_newmem(string_length+1);
  3311.                         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);
  3312.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  3313.                         add_to_buffer(tmp_buffer);
  3314.                         break;
  3315.                     default:break;
  3316.                 }
  3317.             }
  3318.             break;
  3319.         case YLOGSCALE:
  3320.         /*
  3321.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  3322.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3323.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  3324.          @ the linewidth is set using command 'linewidth int'
  3325.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3326.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  3327.          @ 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>
  3328.          @ note: the complete canvas will be used for the 'log paper'
  3329.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3330.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3331.          @ 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')
  3332.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3333.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3334.         */
  3335.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3336.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  3337.             for(i=0;i<4;i++){
  3338.                 switch(i){
  3339.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  3340.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  3341.                     case 2: stroke_color = get_color(infile,0); break;
  3342.                     case 3: fill_color = get_color(infile,1);
  3343.                         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);
  3344.                         tmp_buffer = my_newmem(string_length+1);
  3345.                         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);
  3346.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  3347.                         add_to_buffer(tmp_buffer);
  3348.                         break;
  3349.                     default:break;
  3350.                 }
  3351.             }
  3352.             break;
  3353.         case XYLOGSCALE:
  3354.         /*
  3355.          @ xylogscale majorcolor,minorcolor
  3356.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  3357.          @ the linewidth is set using command 'linewidth int'
  3358.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  3359.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  3360.          @ 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>
  3361.          @ note: the complete canvas will be used for the 'log paper'
  3362.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  3363.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  3364.          @ 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')
  3365.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  3366.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  3367.         */
  3368.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  3369.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  3370.             for(i=0;i<2;i++){
  3371.                 switch(i){
  3372.                     case 0: stroke_color = get_color(infile,0); break;
  3373.                     case 1: fill_color = get_color(infile,1);
  3374.                         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);
  3375.                         tmp_buffer = my_newmem(string_length+1);
  3376.                         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);
  3377.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  3378.                         add_to_buffer(tmp_buffer);
  3379.                         break;
  3380.                     default:break;
  3381.                 }
  3382.             }
  3383.         break;
  3384.         default:sync_input(infile);
  3385.         break;
  3386.     }
  3387.   }
  3388.   /* we are done parsing script file */
  3389.   /* check if xrange / yrange was set explicit ... or use xmin=0 xmax=xsize ymin=0 ymax=ysize : Quadrant I */
  3390.   if( found_size_command == 1 ){
  3391.     fprintf(js_include_file,"var xmin = 0;var xmax = %d;var ymin = 0;var ymax = %d",xsize,ysize);
  3392.   }
  3393.   else
  3394.   {
  3395.     if( found_size_command != 3 ){
  3396.      canvas_error("Please specify both xrange and yrange ...");
  3397.     }
  3398.   }
  3399.  
  3400.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable/clickable shapes / objects  ! */
  3401.   add_javascript_functions(js_function,canvas_root_id);
  3402.    /* add read_canvas() etc functions if needed */
  3403.   if( reply_format > 0 ){ add_read_canvas(canvas_root_id,reply_format,reply_precision);}
  3404.   if( use_pan_and_zoom == TRUE ){
  3405.   /* in case of zooming ... */
  3406.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  3407.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  3408.  var ymin_start=ymin;var ymax_start=xmax;\
  3409.  var zoom_x_increment=0;var zoom_y_increment=0;\
  3410.  var pan_x_increment=0;var pan_y_increment=0;\
  3411.  if(use_ylogscale == 0 ){\
  3412.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (ymax - ymin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  3413.  }else{\
  3414.   zoom_x_increment = (xmax - xmin)/20;\
  3415.   pan_x_increment = (xmax - xmin)/20;\
  3416.  };\
  3417.  function start_canvas%d(type){\
  3418.   switch(type){\
  3419.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  3420.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  3421.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  3422.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  3423.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  3424.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  3425.    case 6:location.reload();break;\
  3426.    default:break;\
  3427.   };\
  3428.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  3429.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  3430.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  3431.   %s\
  3432.  };\
  3433.  start_canvas%d(333);\
  3434. };\n\
  3435. <!-- end wims_canvas_function -->\n\
  3436. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  3437.   }
  3438.   else
  3439.   {
  3440.   /* no zoom, just add buffer */
  3441.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  3442.  %s\
  3443. };\n\
  3444. <!-- end wims_canvas_function -->\n\
  3445. wims_canvas_function%d();\n",buffer,canvas_root_id);
  3446.   }
  3447. /* done writing the javascript include file */
  3448. fclose(js_include_file);
  3449.  
  3450. }
  3451.  
  3452. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  3453. if(use_tooltip == TRUE){
  3454.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  3455. }
  3456. exit(EXIT_SUCCESS);
  3457. }
  3458. /* end main() */
  3459.  
  3460. /******************************************************************************
  3461. **
  3462. **  sync_input
  3463. **
  3464. **  synchronises input line - reads to end of line, leaving file pointer
  3465. **  at first character of next line.
  3466. **
  3467. **  Used by:
  3468. **  main program - error handling.
  3469. **
  3470. ******************************************************************************/
  3471. void sync_input(FILE *infile)
  3472. {
  3473.         int c = 0;
  3474.  
  3475.         if( c == '\n' || c == ';' ) return;
  3476.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  3477.         if( c == EOF ) finished = 1;
  3478.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  3479.         return;
  3480. }
  3481.  
  3482. /******************************************************************************/
  3483.  
  3484. char *str_replace(const char *str, const char *old, const char *new){
  3485. /* http://creativeandcritical.net/str-replace-c/ */
  3486.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  3487.     char *ret, *r;
  3488.     const char *p, *q;
  3489.     size_t oldlen = strlen(old);
  3490.     size_t count = 0;
  3491.     size_t retlen = 0;
  3492.     size_t newlen = strlen(new);
  3493.     if (oldlen != newlen){
  3494.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  3495.             count++;
  3496.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  3497.         }
  3498.     }
  3499.     else
  3500.     {
  3501.         retlen = strlen(str);
  3502.     }
  3503.  
  3504.     if ((ret = malloc(retlen + 1)) == NULL){
  3505.         ret = NULL;
  3506.         canvas_error("string argument is NULL");
  3507.     }
  3508.     else
  3509.     {
  3510.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  3511.             size_t l = q - p;
  3512.             memcpy(r, p, l);
  3513.             r += l;
  3514.             memcpy(r, new, newlen);
  3515.             r += newlen;
  3516.         }
  3517.         strcpy(r, p);
  3518.     }
  3519.     return ret;
  3520. }
  3521.  
  3522. /******************************************************************************/
  3523.  
  3524. char *get_color(FILE *infile , int last){
  3525.     int c,i = 0,is_hex = 0;
  3526.     char temp[MAX_COLOR_STRING], *string;
  3527.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  3528.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  3529.         if( c == '#' ){
  3530.             is_hex = 1;
  3531.         }
  3532.         if( c != ' '){
  3533.             temp[i]=tolower(c);
  3534.             i++;
  3535.         }
  3536.     }
  3537.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3538.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3539.     if( c == EOF ){finished = 1;}
  3540.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3541.     temp[i]='\0';
  3542.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  3543.     if( is_hex == 1 ){
  3544.         char red[3], green[3], blue[3];
  3545.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  3546.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  3547.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  3548.         int r = (int) strtol(red,   NULL, 16);
  3549.         int g = (int) strtol(green, NULL, 16);
  3550.         int b = (int) strtol(blue,  NULL, 16);
  3551.         string = (char *)my_newmem(12);
  3552.         snprintf(string,11,"%d,%d,%d",r,g,b);
  3553.         return string;
  3554.     }
  3555.     else
  3556.     {
  3557.         string = (char *)my_newmem(sizeof(temp));
  3558.         snprintf(string,sizeof(temp),"%s",temp);
  3559.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  3560.             if( strcmp( colors[i].name , string ) == 0 ){
  3561.                 return colors[i].rgb;
  3562.             }
  3563.         }
  3564.     }
  3565.     /* not found...return error */
  3566.     free(string);string = NULL;
  3567.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  3568.     return NULL;
  3569. }
  3570.  
  3571. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  3572.     int c,i=0;
  3573.     char  temp[MAX_BUFFER], *string;
  3574.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  3575.         temp[i]=c;
  3576.         i++;
  3577.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  3578.     }
  3579.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  3580.     if( c == '\n') { done = TRUE; line_number++; }
  3581.     if( c == EOF ) {
  3582.         finished = 1;
  3583.         if( last != 1 ){ canvas_error("expected more arguments");}
  3584.     }
  3585.     temp[i]='\0';
  3586.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  3587.     string=(char *)my_newmem(strlen(temp));
  3588.     snprintf(string,sizeof(temp),"%s",temp);
  3589.     return string;
  3590. }
  3591.  
  3592. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  3593.     int c,i=0;
  3594.     char temp[MAX_BUFFER], *string;
  3595.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  3596.         temp[i]=c;
  3597.         i++;
  3598.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  3599.     }
  3600.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  3601.     if( c == '\n') { line_number++; }
  3602.     if( c == EOF ) {finished = 1;}
  3603.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  3604.     temp[i]='\0';
  3605.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  3606.     string=(char *)my_newmem(sizeof(temp));
  3607.     snprintf(string,sizeof(temp),"%s",temp);
  3608.     done = TRUE;
  3609.     return string;
  3610. }
  3611.  
  3612. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  3613.     int c,i=0,found_calc = 0;
  3614.     double y;
  3615.     char tmp[MAX_INT];
  3616.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  3617.      if( c != ' ' ){
  3618.      /*
  3619.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  3620.      We will check after assert() if it's a NULL pointer...and exit program via :
  3621.      canvas_error("I'm having trouble parsing your \"expression\" ");
  3622.      */
  3623.       if( i == 0 &&  c == '+' ){
  3624.        continue;
  3625.       }
  3626.       else
  3627.       {
  3628.        if(canvas_iscalculation(c) != 0){
  3629.         found_calc = 1;
  3630.         c = tolower(c);
  3631.        }
  3632.        tmp[i] = c;
  3633.        i++;
  3634.       }
  3635.      }
  3636.      if( i > MAX_INT - 1){canvas_error("number too large");}
  3637.     }
  3638.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  3639.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  3640.     if( c == EOF ){done = TRUE ; finished = 1;}
  3641.     tmp[i]='\0';
  3642.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  3643.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  3644.      void *f = eval_create(tmp);
  3645.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  3646.      y = eval_x(f, 1);
  3647.      /* if function is bogus; y = 1 : so no core dumps */
  3648.      eval_destroy(f);
  3649.     }
  3650.     else
  3651.     {
  3652.      y = atof(tmp);
  3653.     }
  3654.     return y;
  3655. }
  3656. void canvas_error(char *msg){
  3657.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  3658.     finished = 1;
  3659.     exit(EXIT_SUCCESS);
  3660. }
  3661.  
  3662.  
  3663. /* convert x/y coordinates to pixel */
  3664. int x2px(double x){
  3665.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3666. }
  3667.  
  3668. int y2px(double y){
  3669.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3670. }
  3671.  
  3672. double px2x(int x){
  3673.  return (x*(xmax - xmin)/xsize + xmin);
  3674. }
  3675. double px2y(int y){
  3676.  return (y*(ymax - ymin)/ysize + ymin);
  3677. }
  3678.  
  3679. void add_to_buffer(char *tmp){
  3680.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3681.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3682.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3683.  if( space_left > strlen(tmp)){
  3684.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3685.  }
  3686.  else
  3687.  {
  3688.   canvas_error("buffer is too big\n");
  3689.  }
  3690.  tmp = NULL;free(tmp);
  3691.  return;
  3692. }
  3693.  
  3694. void reset(){
  3695.  if(use_filled == TRUE){use_filled = FALSE;}
  3696.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3697.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3698.    onclick = 0;
  3699. }
  3700.  
  3701.  
  3702.  
  3703. /* What reply format in read_canvas();
  3704.  
  3705. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3706. 1 = x1,x2,x3,x4....x_n
  3707.     y1,y2,y3,y4....y_n
  3708.  
  3709.     x/y in pixels
  3710.  
  3711. 2 = x1,x2,x3,x4....x_n
  3712.     y1,y2,y3,y4....y_n
  3713.     x/y in  xrange / yrange coordinate system
  3714.  
  3715. 3 = x1,x2,x3,x4....x_n
  3716.     y1,y2,y3,y4....y_n
  3717.     r1,r2,r3,r4....r_n
  3718.  
  3719.     x/y in pixels
  3720.     r in pixels
  3721.  
  3722. 4 = x1,x2,x3,x4....x_n
  3723.     y1,y2,y3,y4....y_n
  3724.     r1,r2,r3,r4....r_n
  3725.  
  3726.     x/y in  xrange / yrange coordinate system
  3727.     r in pixels
  3728.  
  3729. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3730.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3731.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3732.     By1,By2,By3,By4....By_n
  3733.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3734.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3735.     ....
  3736.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3737.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3738.  
  3739.     x/y in pixels
  3740.  
  3741. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3742.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3743.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3744.     By1,By2,By3,By4....By_n
  3745.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3746.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3747.     ....
  3748.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3749.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3750.  
  3751.     x/y in  xrange / yrange coordinate system
  3752.  
  3753. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3754.  
  3755.     x/y in pixels
  3756.  
  3757. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3758.  
  3759.     x/y in  xrange / yrange coordinate system
  3760.  
  3761. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3762.  
  3763.     x/y in pixels
  3764.  
  3765. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3766.  
  3767.     x/y in  xrange / yrange coordinate system
  3768.  
  3769. 11 = Ax1,Ay1,Ax2,Ay2
  3770.      Bx1,By1,Bx2,By2
  3771.      Cx1,Cy1,Cx2,Cy2
  3772.      Dx1,Dy1,Dx2,Dy2
  3773.      ......
  3774.      Zx1,Zy1,Zx2,Zy2
  3775.  
  3776.     x/y in  xrange / yrange coordinate system
  3777.  
  3778. 12 = Ax1,Ay1,Ax2,Ay2
  3779.      Bx1,By1,Bx2,By2
  3780.      Cx1,Cy1,Cx2,Cy2
  3781.      Dx1,Dy1,Dx2,Dy2
  3782.      ......
  3783.      Zx1,Zy1,Zx2,Zy2
  3784.  
  3785.     x/y in pixels
  3786.  
  3787. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3788.  
  3789.     x/y in  xrange / yrange coordinate system
  3790. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3791.     x/y in pixels
  3792. 15 = reply from inputfields,textareas
  3793.     reply1,reply2,reply3,...,reply_n
  3794.     only fields set write (a.g. will not read 'readonly' inputfield values'
  3795.  
  3796. 16 = read mathml inputfields only
  3797.  
  3798. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3799.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3800.  
  3801. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3802. 19 = return clicked object number (analogue to shape-library onclick)
  3803. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3804. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3805. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3806.     x/y in  xrange / yrange coordinate system
  3807. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3808. 24 = read all inputfield values: even those set 'readonly'
  3809. 25 = return all userdrawn arcs in degrees:
  3810. 26 = return all userdrawn arcs in radians:
  3811. 27 = return (only) userdraw inputfields array: x1:y1:text1,x2:y2:text2...
  3812. */
  3813.  
  3814.  
  3815. void add_read_canvas(int canvas_root_id,int type_reply,int reply_precision){
  3816. /* just 1 reply type allowed */
  3817. fprintf(js_include_file,"\
  3818. \n<!-- begin set_reply_precision() -->\n\
  3819. function set_reply_precision(){\
  3820. var len = userdraw_x.length;\
  3821. var prec = %d;\
  3822. for(var p = 0 ; p < len ; p++ ){\
  3823.  userdraw_x[p] = (Math.round(prec*userdraw_x[p]))/prec;\
  3824.  userdraw_y[p] = (Math.round(prec*userdraw_y[p]))/prec;\
  3825. };\
  3826. len = userdraw_radius.length;\
  3827. if( len > 0 ){\
  3828.  for(var p = 0 ; p < len ; p++ ){\
  3829.   userdraw_radius[p] = (Math.round(prec*userdraw_radius[p]))/prec;\
  3830.  };\
  3831. };\
  3832. };",reply_precision);
  3833.  
  3834. switch(type_reply){
  3835. /*
  3836. answers may have:
  3837. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3838. */
  3839.     case 1: fprintf(js_include_file,"\
  3840. \n<!-- begin function 1 read_canvas%d() -->\n\
  3841. read_canvas%d = function(){\
  3842. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3843. set_reply_precision();\
  3844. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3845.  var p = 0;var input_reply = new Array();\
  3846.  if( document.getElementById(\"canvas_input0\")){\
  3847.   var t = 0;\
  3848.   while(document.getElementById(\"canvas_input\"+t)){\
  3849.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3850.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3851.     p++;\
  3852.    };\
  3853.    t++;\
  3854.   };\
  3855.  };\
  3856.  if( typeof userdraw_text != 'undefined' ){\
  3857.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3858.  }\
  3859.  else\
  3860.  {\
  3861.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3862.  }\
  3863. }\
  3864. else\
  3865. {\
  3866.  if( typeof userdraw_text != 'undefined' ){\
  3867.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3868.  }\
  3869.  else\
  3870.  {\
  3871.   return userdraw_x+\"\\n\"+userdraw_y;\
  3872.  }\
  3873. };\
  3874. };\n\
  3875. <!-- end function 1 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  3876.     break;
  3877.     case 2: fprintf(js_include_file,"\
  3878. \n<!-- begin function 2 read_canvas%d() -->\n\
  3879. read_canvas%d = function(){\
  3880. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3881. set_reply_precision();\
  3882. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3883. var prec = %d;\
  3884. while(userdraw_x[p]){\
  3885.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3886.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  3887.  p++;\
  3888. };\
  3889. if(p == 0){alert(\"nothing drawn...\");return;};\
  3890. if( document.getElementById(\"canvas_input0\")){\
  3891.  var p = 0;var input_reply = new Array();\
  3892.  if( document.getElementById(\"canvas_input0\")){\
  3893.   var t = 0;\
  3894.   while(document.getElementById(\"canvas_input\"+t)){\
  3895.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3896.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3897.     p++;\
  3898.    };\
  3899.    t++;\
  3900.   };\
  3901.  };\
  3902.  if( typeof userdraw_text != 'undefined' ){\
  3903.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3904.  }\
  3905.  else\
  3906.  {\
  3907.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3908.  }\
  3909. }\
  3910. else\
  3911. {\
  3912.  if( typeof userdraw_text != 'undefined' ){\
  3913.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3914.  }\
  3915.  else\
  3916.  {\
  3917.   return reply_x+\"\\n\"+reply_y;\
  3918.  };\
  3919. };\
  3920. };\n\
  3921. <!-- end function 2 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  3922.     break;
  3923.     case 3: fprintf(js_include_file,"\
  3924. \n<!-- begin function 3 read_canvas%d() -->\n\
  3925. read_canvas%d = function(){\
  3926. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3927. set_reply_precision();\
  3928. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3929.  var p = 0;var input_reply = new Array();\
  3930.  if( document.getElementById(\"canvas_input0\")){\
  3931.   var t = 0;\
  3932.   while(document.getElementById(\"canvas_input\"+t)){\
  3933.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3934.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3935.     p++;\
  3936.    };\
  3937.    t++;\
  3938.   };\
  3939.  };\
  3940.  if( typeof userdraw_text != 'undefined' ){\
  3941.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3942.  }\
  3943.  else\
  3944.  {\
  3945.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3946.  }\
  3947. }\
  3948. else\
  3949. {\
  3950.  if( typeof userdraw_text != 'undefined' ){\
  3951.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3952.  }\
  3953.  else\
  3954.  {\
  3955.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3956.  }\
  3957. }\
  3958. };\n\
  3959. <!-- end function 3 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  3960.     break;
  3961.     case 4: fprintf(js_include_file,"\
  3962. \n<!-- begin function 4 read_canvas%d() -->\n\
  3963. read_canvas%d = function(){\
  3964. var prec = %d;\
  3965. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3966. while(userdraw_x[p]){\
  3967.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;\
  3968.  reply_y[p] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;;\
  3969.  p++;\
  3970. };\
  3971. if(p == 0){alert(\"nothing drawn...\");return;};\
  3972. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3973.  var p = 0;var input_reply = new Array();\
  3974.  if( document.getElementById(\"canvas_input0\")){\
  3975.   var t = 0;\
  3976.   while(document.getElementById(\"canvas_input\"+t)){\
  3977.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3978.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3979.     p++;\
  3980.    };\
  3981.    t++;\
  3982.   };\
  3983.  };\
  3984.  if( typeof userdraw_text != 'undefined' ){\
  3985.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3986.  }\
  3987.  else\
  3988.  {\
  3989.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3990.  }\
  3991. }\
  3992. else\
  3993. {\
  3994.  if( typeof userdraw_text != 'undefined' ){\
  3995.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3996.  }\
  3997.  else\
  3998.  {\
  3999.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  4000.  }\
  4001. };\
  4002. };\n\
  4003. <!-- end function 4 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4004.     break;
  4005.     /*
  4006.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  4007.         used for userdraw multiple paths
  4008.     */
  4009.     case 5: fprintf(js_include_file,"\
  4010. \n<!-- begin function 5 read_canvas%d() -->\n\
  4011. read_canvas%d = function(){\
  4012. set_reply_precision();\
  4013. var p = 0;\
  4014. var reply = \"\";\
  4015. for(p = 0; p < userdraw_x.length;p++){\
  4016.  if(userdraw_x[p] != null ){\
  4017.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  4018.  };\
  4019. };\
  4020. if(p == 0){alert(\"nothing drawn...\");return;};\
  4021. userdraw_x = [];userdraw_y = [];\
  4022. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4023.  var p = 0;var input_reply = new Array();\
  4024.  if( document.getElementById(\"canvas_input0\")){\
  4025.   var t = 0;\
  4026.   while(document.getElementById(\"canvas_input\"+t)){\
  4027.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4028.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4029.     p++;\
  4030.    };\
  4031.    t++;\
  4032.   };\
  4033.  };\
  4034.  if( typeof userdraw_text != 'undefined' ){\
  4035.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4036.  }\
  4037.  else\
  4038.  {\
  4039.   return reply +\"\\n\"+input_reply;\
  4040.  }\
  4041. }\
  4042. else\
  4043. {\
  4044.  if( typeof userdraw_text != 'undefined' ){\
  4045.   return reply+\"\\n\"+userdraw_text;\
  4046.  }\
  4047.  else\
  4048.  {\
  4049.   return reply;\
  4050.  }\
  4051. };\
  4052. };\n\
  4053. <!-- end function 5 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4054.     break;
  4055.     /*
  4056.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  4057.         used for userdraw multiple paths
  4058.     */
  4059.     case 6: fprintf(js_include_file,"\
  4060. \n<!-- begin function 6 read_canvas%d() -->\n\
  4061. read_canvas%d = function(){\
  4062. var p = 0;\
  4063. var reply = \"\";\
  4064. var tmp_x = new Array();\
  4065. var tmp_y = new Array();\
  4066. var prec = %d;\
  4067. for(p = 0 ; p < userdraw_x.length; p++){\
  4068.  tmp_x = userdraw_x[p];\
  4069.  tmp_y = userdraw_y[p];\
  4070.  if(tmp_x != null){\
  4071.   for(var i = 0 ; i < tmp_x.length ; i++){\
  4072.    tmp_x[i] = (Math.round(prec*(px2x(tmp_x[i]))))/prec;\
  4073.    tmp_y[i] = (Math.round(prec*(px2y(tmp_y[i]))))/prec;\
  4074.   };\
  4075.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  4076.  };\
  4077. };\
  4078. if(p == 0){alert(\"nothing drawn...\");return;};\
  4079. userdraw_x = [];userdraw_y = [];\
  4080. if( document.getElementById(\"canvas_input0\") ){\
  4081.  var p = 0;var input_reply = new Array();\
  4082.  if( document.getElementById(\"canvas_input0\")){\
  4083.   var t = 0;\
  4084.   while(document.getElementById(\"canvas_input\"+t)){\
  4085.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4086.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4087.     p++;\
  4088.    };\
  4089.    t++;\
  4090.   };\
  4091.  };\
  4092.  if( typeof userdraw_text != 'undefined' ){\
  4093.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4094.  }\
  4095.  else\
  4096.  {\
  4097.   return reply +\"\\n\"+input_reply;\
  4098.  }\
  4099. }\
  4100. else\
  4101. {\
  4102.  if( typeof userdraw_text != 'undefined' ){\
  4103.   return reply +\"\\n\"+userdraw_text;\
  4104.  }\
  4105.  else\
  4106.  {\
  4107.   return reply;\
  4108.  }\
  4109. };\
  4110. };\n\
  4111. <!-- end function 6 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4112.     break;
  4113.     case 7: fprintf(js_include_file,"\
  4114. \n<!-- begin function 7 read_canvas%d() -->\n\
  4115. read_canvas%d = function(){\
  4116. set_reply_precision();\
  4117. var reply = new Array();\
  4118. var p = 0;\
  4119. while(userdraw_x[p]){\
  4120.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  4121.  p++;\
  4122. };\
  4123. if(p == 0){alert(\"nothing drawn...\");return;};\
  4124. if( document.getElementById(\"canvas_input0\") ){\
  4125.  var p = 0;var input_reply = new Array();\
  4126.  if( document.getElementById(\"canvas_input0\")){\
  4127.   var t = 0;\
  4128.   while(document.getElementById(\"canvas_input\"+t)){\
  4129.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4130.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4131.     p++;\
  4132.    };\
  4133.    t++;\
  4134.   };\
  4135.  };\
  4136.  if( typeof userdraw_text != 'undefined' ){\
  4137.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4138.  }\
  4139.  else\
  4140.  {\
  4141.   return reply+\"\\n\"+input_reply;\
  4142.  }\
  4143. }\
  4144. else\
  4145. {\
  4146.  if( typeof userdraw_text != 'undefined' ){\
  4147.   return reply+\"\\n\"+userdraw_text;\
  4148.  }\
  4149.  else\
  4150.  {\
  4151.   return reply;\
  4152.  }\
  4153. };\
  4154. };\n\
  4155. <!-- end function 7 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4156.     break;
  4157.     case 8: fprintf(js_include_file,"\
  4158. \n<!-- begin function 8 read_canvas%d() -->\n\
  4159. read_canvas%d = function(){\
  4160. var reply = new Array();\
  4161. var p = 0;\
  4162. var prec = %d;\
  4163. while(userdraw_x[p]){\
  4164.  reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec +\":\" + (Math.round(prec*(px2y(userdraw_y[p]))))/prec;\
  4165.  p++;\
  4166. };\
  4167. if(p == 0){alert(\"nothing drawn...\");return;};\
  4168. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4169.  var p = 0;var input_reply = new Array();\
  4170.  if( document.getElementById(\"canvas_input0\")){\
  4171.   var t = 0;\
  4172.   while(document.getElementById(\"canvas_input\"+t)){\
  4173.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4174.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4175.     p++;\
  4176.    };\
  4177.    t++;\
  4178.   };\
  4179.  };\
  4180.  if( typeof userdraw_text != 'undefined' ){\
  4181.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4182.  }\
  4183.  else\
  4184.  {\
  4185.   return reply +\"\\n\"+input_reply;\
  4186.  }\
  4187. }\
  4188. else\
  4189. {\
  4190.  if( typeof userdraw_text != 'undefined' ){\
  4191.   return reply +\"\\n\"+userdraw_text;\
  4192.  }\
  4193.  else\
  4194.  {\
  4195.   return reply;\
  4196.  }\
  4197. };\
  4198. };\n\
  4199. <!-- end function 8 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4200.     break;
  4201.     case 9: fprintf(js_include_file,"\
  4202. \n<!-- begin function 9 read_canvas%d() -->\n\
  4203. read_canvas%d = function(){\
  4204. set_reply_precision();\
  4205. var reply = new Array();\
  4206. var p = 0;\
  4207. while(userdraw_x[p]){\
  4208.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  4209.  p++;\
  4210. };\
  4211. if(p == 0){alert(\"nothing drawn...\");return;};\
  4212. if( document.getElementById(\"canvas_input0\") ){\
  4213.  var p = 0;var input_reply = new Array();\
  4214.  if( document.getElementById(\"canvas_input0\")){\
  4215.   var t = 0;\
  4216.   while(document.getElementById(\"canvas_input\"+t)){\
  4217.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4218.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4219.     p++;\
  4220.    };\
  4221.    t++;\
  4222.   };\
  4223.  };\
  4224.  if( typeof userdraw_text != 'undefined' ){\
  4225.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4226.  }\
  4227.  else\
  4228.  {\
  4229.   return reply +\"\\n\"+input_reply;\
  4230.  }\
  4231. }\
  4232. else\
  4233. {\
  4234.  if( typeof userdraw_text != 'undefined' ){\
  4235.   return reply +\"\\n\"+userdraw_text;\
  4236.  }\
  4237.  else\
  4238.  {\
  4239.   return reply;\
  4240.  }\
  4241. };\
  4242. };\n\
  4243. <!-- end function 9 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4244.     break;
  4245.     case 10: fprintf(js_include_file,"\
  4246. \n<!-- begin function 10 read_canvas%d() -->\n\
  4247. read_canvas%d = function(){\
  4248. var reply = new Array();\
  4249. var p = 0;\
  4250. var prec = %d;\
  4251. while(userdraw_x[p]){\
  4252.  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;\
  4253.  p++;\
  4254. };\
  4255. if(p == 0){alert(\"nothing drawn...\");return;};\
  4256. if( document.getElementById(\"canvas_input0\") ){\
  4257.  var p = 0;var input_reply = new Array();\
  4258.  if( document.getElementById(\"canvas_input0\")){\
  4259.   var t = 0;\
  4260.   while(document.getElementById(\"canvas_input\"+t)){\
  4261.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4262.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4263.     p++;\
  4264.    };\
  4265.    t++;\
  4266.   };\
  4267.  };\
  4268.  if( typeof userdraw_text != 'undefined' ){\
  4269.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4270.  }\
  4271.  else\
  4272.  {\
  4273.   return reply +\"\\n\"+input_reply;\
  4274.  }\
  4275. }\
  4276. else\
  4277. {\
  4278.  if( typeof userdraw_text != 'undefined' ){\
  4279.   return reply +\"\\n\"+userdraw_text;\
  4280.  }\
  4281.  else\
  4282.  {\
  4283.   return reply;\
  4284.  }\
  4285. };\
  4286. };\n\
  4287. <!-- end function 10 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4288.     break;
  4289.     case 11: fprintf(js_include_file,"\
  4290. \n<!-- begin function 11 read_canvas%d() -->\n\
  4291. read_canvas%d = function(){\
  4292. var reply = \"\";\
  4293. var p = 0;\
  4294. var prec = %d;\
  4295. while(userdraw_x[p]){\
  4296.  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\" ;\
  4297.  p = p+2;\
  4298. };\
  4299. if(p == 0){alert(\"nothing drawn...\");return;};\
  4300. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  4301.  var p = 0;var input_reply = new Array();\
  4302.  if( document.getElementById(\"canvas_input0\")){\
  4303.   var t = 0;\
  4304.   while(document.getElementById(\"canvas_input\"+t)){\
  4305.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4306.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4307.     p++;\
  4308.    };\
  4309.    t++;\
  4310.   };\
  4311.  };\
  4312.  if( typeof userdraw_text != 'undefined' ){\
  4313.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4314.  }\
  4315.  else\
  4316.  {\
  4317.   return reply +\"\\n\"+input_reply;\
  4318.  }\
  4319. }\
  4320. else\
  4321. {\
  4322.  if( typeof userdraw_text != 'undefined' ){\
  4323.   return reply +\"\\n\"+userdraw_text;\
  4324.  }\
  4325.  else\
  4326.  {\
  4327.   return reply;\
  4328.  }\
  4329. };\
  4330. };\n\
  4331. <!-- end function 11 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4332.     break;
  4333.     case 12: fprintf(js_include_file,"\
  4334. \n<!-- begin function 12 read_canvas%d() -->\n\
  4335. read_canvas%d = function(){\
  4336. set_reply_precision();\
  4337. var reply = \"\";\
  4338. var p = 0;\
  4339. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  4340.  if(userdraw_x[p] != null){\
  4341.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  4342.  };\
  4343. };\
  4344. if(p == 0){alert(\"nothing drawn...\");return;};\
  4345. if( document.getElementById(\"canvas_input0\") ){\
  4346.  var p = 0;var input_reply = new Array();\
  4347.  if( document.getElementById(\"canvas_input0\")){\
  4348.   var t = 0;\
  4349.   while(document.getElementById(\"canvas_input\"+t)){\
  4350.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4351.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4352.     p++;\
  4353.    };\
  4354.    t++;\
  4355.   };\
  4356.  };\
  4357.  if( typeof userdraw_text != 'undefined' ){\
  4358.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4359.  }\
  4360.  else\
  4361.  {\
  4362.   return reply +\"\\n\"+input_reply;\
  4363.  }\
  4364. }\
  4365. else\
  4366. {\
  4367.  if( typeof userdraw_text != 'undefined' ){\
  4368.   return reply +\"\\n\"+userdraw_text\
  4369.  }\
  4370.  else\
  4371.  {\
  4372.   return reply;\
  4373.  }\
  4374. };\
  4375. };\n\
  4376. <!-- end function 12 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4377.     break;
  4378.     case 13: fprintf(js_include_file,"\
  4379. \n<!-- begin function 13 read_canvas%d() -->\n\
  4380. read_canvas%d = function(){\
  4381. var reply = new Array();\
  4382. var p = 0;var i = 0;\
  4383. var prec = %d;\
  4384. while(userdraw_x[p]){\
  4385.  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;\
  4386.  p = p+2;i++;\
  4387. };\
  4388. if(p == 0){alert(\"nothing drawn...\");return;};\
  4389. if( document.getElementById(\"canvas_input0\") ){\
  4390.  var p = 0;var input_reply = new Array();\
  4391.  if( document.getElementById(\"canvas_input0\")){\
  4392.   var t = 0;\
  4393.   while(document.getElementById(\"canvas_input\"+t)){\
  4394.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4395.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4396.     p++;\
  4397.    };\
  4398.    t++;\
  4399.   };\
  4400.  };\
  4401.  if( typeof userdraw_text != 'undefined' ){\
  4402.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4403.  }\
  4404.  else\
  4405.  {\
  4406.   return reply +\"\\n\"+input_reply;\
  4407.  }\
  4408. }\
  4409. else\
  4410. {\
  4411.  if( typeof userdraw_text != 'undefined' ){\
  4412.   return reply +\"\\n\"+userdraw_text\
  4413.  }\
  4414.  else\
  4415.  {\
  4416.   return reply;\
  4417.  }\
  4418. };\
  4419. };\n\
  4420. <!-- end function 13 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4421.     break;
  4422.     case 14: fprintf(js_include_file,"\
  4423. \n<!-- begin function 14 read_canvas%d() -->\n\
  4424. read_canvas%d = function(){\
  4425. set_reply_precision();\
  4426. var reply = new Array();\
  4427. var p = 0;var i = 0;\
  4428. while(userdraw_x[p]){\
  4429.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  4430.  p = p+2;i++;\
  4431. };\
  4432. if(p == 0){alert(\"nothing drawn...\");return;};\
  4433. if( document.getElementById(\"canvas_input0\") ){\
  4434.  var p = 0;var input_reply = new Array();\
  4435.  if( document.getElementById(\"canvas_input0\")){\
  4436.   var t = 0;\
  4437.   while(document.getElementById(\"canvas_input\"+t)){\
  4438.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4439.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4440.     p++;\
  4441.    };\
  4442.    t++;\
  4443.   };\
  4444.  };\
  4445.  if( typeof userdraw_text != 'undefined' ){\
  4446.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4447.  }\
  4448.  else\
  4449.  {\
  4450.   return reply +\"\\n\"+input_reply;\
  4451.  }\
  4452. }\
  4453. else\
  4454. {\
  4455.  if( typeof userdraw_text != 'undefined' ){\
  4456.   return reply +\"\\n\"+userdraw_text;\
  4457.  }\
  4458.  else\
  4459.  {\
  4460.   return reply;\
  4461.  }\
  4462. };\
  4463. };\n\
  4464. <!-- end function 14 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4465.     break;
  4466.     case 15: fprintf(js_include_file,"\
  4467. \n<!-- begin function 15  read_canvas%d() -->\n\
  4468. read_canvas%d = function(){\
  4469. var input_reply = new Array();\
  4470. var p = 0;\
  4471. if( document.getElementById(\"canvas_input0\")){\
  4472.  var t = 0;\
  4473.  while(document.getElementById(\"canvas_input\"+t)){\
  4474.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4475.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4476.    p++;\
  4477.   };\
  4478.   t++;\
  4479.  };\
  4480. };\
  4481. if( typeof userdraw_text != 'undefined' ){\
  4482.   return input_reply +\"\\n\"+userdraw_text;\
  4483. }\
  4484. else\
  4485. {\
  4486.  return input_reply;\
  4487. };\
  4488. };\n\
  4489. <!-- end function 15 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4490.     break;
  4491.     case 16: fprintf(js_include_file,"\
  4492. \n<!-- begin function 16 read_mathml() -->\n\
  4493. function read_mathml(){\
  4494. var reply = new Array();\
  4495. var p = 0;\
  4496. if( document.getElementById(\"mathml0\")){\
  4497.  while(document.getElementById(\"mathml\"+p)){\
  4498.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  4499.   p++;\
  4500.  };\
  4501. };\
  4502. return reply;\
  4503. };\
  4504. this.read_mathml = read_mathml;\n\
  4505. <!-- end function 16 read_mathml() -->");
  4506.     break;
  4507.     case 17:  fprintf(js_include_file,"\
  4508. \n<!-- begin function 17 read_canvas%d() -->\n\
  4509. read_canvas%d = function(){\
  4510. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  4511. return userdraw_text;\
  4512. };\n\
  4513. <!-- end function 17 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4514.     break;
  4515.     case 18: fprintf(js_include_file,"\
  4516. \n<!-- begin function 18 read_canvas%d() -->\n\
  4517. read_canvas%d = function(){\
  4518. var p = 0;\
  4519. var reply = new Array();\
  4520. var name;\
  4521. var t = true;\
  4522. var h;var m;var s;\
  4523. while(t){\
  4524.  try{\
  4525.   name = eval('clocks'+p);\
  4526.   h = name.H;m = name.M;s = name.S;\
  4527.   if(s < 0){s = 60 + s;m = m - 1;};\
  4528.   if(m < 0){m = 60 + m;h = h - 1;};\
  4529.   if(h < 0){h = 12 + h;};\
  4530.   h = parseInt((h+m/60+s/3600)%%12);m = parseInt((m + s/60)%%60);s = parseInt(s%%60);\
  4531.   reply[p] = h+\":\"+m+\":\"+s;\
  4532.   p++;\
  4533.  }catch(e){t=false;};\
  4534. };\
  4535. if( p == 0 ){alert(\"clock(s) not modified...\");return;}\
  4536. return reply;\
  4537. };\n\
  4538. <!-- end function 18 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4539.     break;
  4540.     case 19: fprintf(js_include_file,"\
  4541. \n<!-- begin function 19 read_canvas%d() -->\n\
  4542. read_canvas%d = function(){\
  4543. return reply[0];\
  4544. };\n\
  4545. <!-- end function 19 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4546.     break;
  4547.     case 20: fprintf(js_include_file,"\
  4548. \n<!-- begin function 20 read_canvas%d() -->\n\
  4549. read_canvas%d = function(){\
  4550. var prec = %d;\
  4551. var len  = ext_drag_images.length;\
  4552. var reply = new Array(len);\
  4553. for(var p = 0 ; p < len ; p++){\
  4554.    var img = ext_drag_images[p];\
  4555.    reply[p] = (Math.round(prec*(px2x(img[6]))))/prec+\":\"+(Math.round(prec*(px2y(img[7]))))/prec;\
  4556. };\
  4557. return reply;\
  4558. };\n\
  4559. <!-- end function 20 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4560.     break;
  4561.     case 21: fprintf(js_include_file,"\
  4562. \n<!-- begin function 21 read_canvas%d() -->\n\
  4563. read_canvas%d = function(){\
  4564. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  4565. var reply_coord = new Array();var p = 0;\
  4566. var prec = %d;\
  4567. while(userdraw_x[p]){\
  4568.  reply_coord[p] = \"(\"+(Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\")\";\
  4569.  p++;\
  4570. };\
  4571. if(p == 0){alert(\"nothing drawn...\");return;};\
  4572. if( document.getElementById(\"canvas_input0\") ){\
  4573.  var p = 0;var input_reply = new Array();\
  4574.  if( document.getElementById(\"canvas_input0\")){\
  4575.   var t = 0;\
  4576.   while(document.getElementById(\"canvas_input\"+t)){\
  4577.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4578.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4579.     p++;\
  4580.    };\
  4581.    t++;\
  4582.   };\
  4583.  };\
  4584.  if( typeof userdraw_text != 'undefined' ){\
  4585.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4586.  }\
  4587.  else\
  4588.  {\
  4589.   return reply_coord+\"\\n\"+input_reply;\
  4590.  }\
  4591. }\
  4592. else\
  4593. {\
  4594.  if( typeof userdraw_text != 'undefined' ){\
  4595.   return reply_coord+\"\\n\"+userdraw_text;\
  4596.  }\
  4597.  else\
  4598.  {\
  4599.   return reply_coord;\
  4600.  };\
  4601. };\
  4602. };\n\
  4603. <!-- end function 21 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4604.     break;
  4605.     case 22: fprintf(js_include_file,"\
  4606. \n<!-- begin function 22 read_canvas%d() -->\n\
  4607. read_canvas%d = function(){\
  4608. var reply = new Array();\
  4609. var lu = userdraw_x.length;\
  4610. if(lu == 0){alert(\"nothing drawn...\");return;};\
  4611. var idx = 0;\
  4612. var prec = %d;\
  4613. for(var p = 0 ; p < lu ; p++){\
  4614.  reply[idx] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec;idx++;\
  4615.  reply[idx] = (Math.round(prec*(px2y(userdraw_y[p]))))/prec;idx++;\
  4616. };\
  4617. if( document.getElementById(\"canvas_input0\") ){\
  4618.  var p = 0;var input_reply = new Array();\
  4619.  if( document.getElementById(\"canvas_input0\")){\
  4620.   var t = 0;\
  4621.   while(document.getElementById(\"canvas_input\"+t)){\
  4622.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4623.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4624.     p++;\
  4625.    };\
  4626.    t++;\
  4627.   };\
  4628.  };\
  4629.  if( typeof userdraw_text != 'undefined' ){\
  4630.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4631.  }\
  4632.  else\
  4633.  {\
  4634.   return reply +\"\\n\"+input_reply;\
  4635.  }\
  4636. }\
  4637. else\
  4638. {\
  4639.  if( typeof userdraw_text != 'undefined' ){\
  4640.   return reply +\"\\n\"+userdraw_text;\
  4641.  }\
  4642.  else\
  4643.  {\
  4644.   return reply;\
  4645.  }\
  4646. };\
  4647. };\n\
  4648. <!-- end function 22 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4649.     break;
  4650.     case 23: fprintf(js_include_file,"\
  4651. \n<!-- begin function 23 read_canvas%d() default 5 px marge -->\n\
  4652. read_canvas%d = function(){\
  4653. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  4654. var lu = userdraw_x.length;\
  4655. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  4656. var reply_x = new Array();var reply_y = new Array();\
  4657. var marge = 5;var p = 0;\
  4658. var prec = %d;\
  4659. for(var i = 0; i < lu - 1 ; i++ ){\
  4660.  if( Math.abs(userdraw_x[i] - userdraw_x[i+1])){\
  4661.   reply_x[p] = (Math.round(prec*(px2x(userdraw_x[i]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[i]))))/prec;\
  4662.   if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  4663.   p++;\
  4664.  };\
  4665.  reply_x[p] = (Math.round(prec*(px2x(userdraw_x[lu-1]))))/prec;reply_y[p] = (Math.round(prec*(px2y(userdraw_y[lu-1]))))/prec;\
  4666. };\
  4667. if( document.getElementById(\"canvas_input0\")){\
  4668.  var p = 0;var input_reply = new Array();\
  4669.  if( document.getElementById(\"canvas_input0\")){\
  4670.   var t = 0;\
  4671.   while(document.getElementById(\"canvas_input\"+t)){\
  4672.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4673.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4674.     p++;\
  4675.    };\
  4676.    t++;\
  4677.   };\
  4678.  };\
  4679.  if( typeof userdraw_text != 'undefined' ){\
  4680.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4681.  }\
  4682.  else\
  4683.  {\
  4684.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4685.  }\
  4686. }\
  4687. else\
  4688. {\
  4689.  if( typeof userdraw_text != 'undefined' ){\
  4690.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4691.  }\
  4692.  else\
  4693.  {\
  4694.   return reply_x+\"\\n\"+reply_y;\
  4695.  };\
  4696. };\
  4697. };\n\
  4698. <!-- end function 23 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4699.     break;
  4700.     case 24: fprintf(js_include_file,"\n\
  4701. <!-- begin function 24  read_canvas%d() -->\n\
  4702. read_canvas%d = function(){\
  4703. var input_reply = new Array();\
  4704. var p = 0;\
  4705. if( document.getElementById(\"canvas_input0\")){\
  4706.  while(document.getElementById(\"canvas_input\"+p)){\
  4707.    input_reply[p] = document.getElementById(\"canvas_input\"+p).value;\
  4708.    p++;\
  4709.  };\
  4710.  return input_reply;\
  4711. };\
  4712. };\n\
  4713. <!-- end function 24 read_canvas%d() -->",canvas_root_id,canvas_root_id,canvas_root_id);
  4714.     break;
  4715.     case 25:
  4716.     fprintf(js_include_file,"\n<!-- begin function 25 read_canvas%d() : angle(s) in degrees-->\n\
  4717. read_canvas%d = function(){\
  4718. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4719. var lu = userdraw_radius.length;\
  4720. var prec = %d;\
  4721. var angle_reply = new Array(lu);\
  4722. for(var p = 0 ; p < lu ; p++){\
  4723.  angle_reply[p] = (Math.round(prec*180*(userdraw_radius[p])/Math.PI))/prec;\
  4724. };\
  4725. return angle_reply;\
  4726. };\n\
  4727. <!-- end function 25 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4728.     break;
  4729.     case 26:
  4730.     fprintf(js_include_file,"\n<!-- begin function 26 read_canvas%d() : angle(s) in radians-->\n\
  4731. read_canvas%d = function(){\
  4732. if( userdraw_radius.length < 1){alert(\"nothing drawn...\");return;}\
  4733. var lu = userdraw_radius.length;\
  4734. var prec = %d;\
  4735. var angle_reply = new Array(lu);\
  4736. for(var p = 0 ; p < lu ; p++){\
  4737.  angle_reply[p] = (Math.round(prec*(userdraw_radius[p])))/prec;\
  4738. };\
  4739. return angle_reply;\
  4740. };\n\
  4741. <!-- end function 26 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4742.     break;
  4743.     case 27:
  4744.     fprintf(js_include_file,"\n<!-- begin function 27 read_canvas%d()  : inputfield(s) location and their values : -->\n\
  4745. read_canvas%d = function(){\
  4746. var lu = userdraw_x.length;\
  4747. if( lu < 1){alert(\"nothing drawn...\");return;}\
  4748. set_reply_precision();\
  4749. var prec = %d;\
  4750. for(var p = 0 ; p < lu ; p++){\
  4751.   reply[p] = (Math.round(prec*(px2x(userdraw_x[p]))))/prec+\":\"+(Math.round(prec*(px2y(userdraw_y[p]))))/prec+\":\"+ document.getElementById(\"canvas_input\"+p).value;\
  4752. };\
  4753. return reply;\
  4754. };\n\
  4755. <!-- end function 27 read_canvas%d() -->",canvas_root_id,canvas_root_id,reply_precision,canvas_root_id);
  4756.     break;
  4757.     default: canvas_error("hmmm unknown replyformat...");break;
  4758. }
  4759.  return;
  4760. }
  4761.  
  4762.  
  4763. /*
  4764.  add drawfunction :
  4765.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4766.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4767.  - grid / mathml
  4768.  - will not scale or zoom in
  4769.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4770.  - is printed directly into 'js_include_file'
  4771. */
  4772.  
  4773. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4774. int i;
  4775. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4776.  if( js_functions[i] == 1){
  4777.     switch(i){
  4778.     case DRAG_EXTERNAL_IMAGE:
  4779. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4780. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4781. var external_ctx = external_canvas.getContext(\"2d\");\
  4782. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4783. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4784. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4785. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4786. var selected_image = null;\
  4787. var ext_image_cnt = 0;\
  4788. var ext_drag_images = new Array();\
  4789. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4790. ext_image_cnt = idx;\
  4791. var image = new Image();\
  4792. image.src = URL;\
  4793. image.onload = function(){\
  4794.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4795.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4796.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4797.  var img = new Array(10);\
  4798.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4799.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4800.  ext_drag_images[idx] = img;\
  4801.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4802. };\
  4803. };\
  4804. function dragstop(evt){\
  4805. selected_image = null;return;\
  4806. };\
  4807. function dragxy(evt){\
  4808. if( selected_image != null ){\
  4809.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4810.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4811.  var s_img = ext_drag_images[selected_image];\
  4812.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4813.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4814.  ext_drag_images[selected_image] = s_img;\
  4815.  external_ctx.clearRect(0,0,xsize,ysize);\
  4816.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4817.   var img = ext_drag_images[i];\
  4818.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4819.  };\
  4820. };\
  4821. };\
  4822. function setxy(evt){\
  4823. if( ! selected_image && evt.which == 1 ){\
  4824.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4825.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4826.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4827.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4828.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4829.   var img = ext_drag_images[p];\
  4830.   if( img[0] == 1 ){\
  4831.    var w = img.width;\
  4832.    var h = img.height;\
  4833.    if( xm > img[6] && xm < img[6] + img[4]){\
  4834.     if( ym > img[7] && ym < img[7] + img[5]){\
  4835.      img[6] = xm;\
  4836.      img[7] = ym;\
  4837.      ext_drag_images[p] = img;\
  4838.      selected_image = p;\
  4839.      dragxy(evt);\
  4840.     };\
  4841.    };\
  4842.   };\
  4843.  };\
  4844. }\
  4845. else\
  4846. {\
  4847.  selected_image = null;\
  4848. };\
  4849. };",canvas_root_id);
  4850.     break;
  4851.  
  4852.     case DRAW_EXTERNAL_IMAGE:
  4853. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4854. var draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4855. var image = new Image();\
  4856. image.src = URL;\
  4857. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4858. image.onload = function(){\
  4859.  if( x0 < 1 ){ x0 = 0; };\
  4860.  if( y0 < 1 ){ y0 = 0; };\
  4861.  if( sx < 1 ){ sx = 0; };\
  4862.  if( sy < 1 ){ sy = 0; };\
  4863.  if( width < 1 ){ width = image.width;};\
  4864.  if( height < 1 ){ height = image.height;};\
  4865.  if( swidth < 1 ){ swidth = image.width;};\
  4866.  if( sheight < 1 ){ sheight = image.height;};\
  4867.  var ml = x0 - sx;\
  4868.  var mh = y0 - sy;\
  4869.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4870.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4871.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4872.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4873.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4874. };\
  4875. };",canvas_root_id);
  4876.     break;
  4877.     case DRAW_GRIDFILL:/* not used for userdraw */
  4878. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4879. var draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4880. var obj;\
  4881. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4882.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4883. }\
  4884. else\
  4885. {\
  4886.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4887. };\
  4888. var ctx = obj.getContext(\"2d\");\
  4889. var x,y;\
  4890. snap_x = dx;snap_y = dy;\
  4891. ctx.save();\
  4892. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4893. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4894.    ctx.moveTo(x,y0);\
  4895.    ctx.lineTo(x,ysize);\
  4896. };\
  4897. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4898.    ctx.moveTo(x0,y);\
  4899.    ctx.lineTo(xsize,y);\
  4900. };\
  4901. ctx.stroke();\
  4902. ctx.restore();\
  4903. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4904.     break;
  4905.  
  4906.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4907. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4908. var draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4909. var obj;\
  4910. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4911.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4912. }\
  4913. else\
  4914. {\
  4915.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4916. };\
  4917. var ctx = obj.getContext(\"2d\");\
  4918. ctx.save();\
  4919. var img = new Image();\
  4920. img.src = URL;\
  4921. img.onload = function(){\
  4922.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4923.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4924.  }\
  4925.  else\
  4926.  {\
  4927.    var repeat = \"repeat\";\
  4928.    if(img.width > xsize - x0){\
  4929.         repeat = \"repeat-y\";\
  4930.    }\
  4931.    else\
  4932.    {\
  4933.     if( img.height > ysize -x0 ){\
  4934.      repeat = \"repeat-x\";\
  4935.     }\
  4936.    }\
  4937.    var pattern = ctx.createPattern(img,repeat);\
  4938.    ctx.rect(x0,y0,xsize,ysize);\
  4939.    ctx.fillStyle = pattern;\
  4940.  }\
  4941.  ctx.fill();\
  4942. };\
  4943. ctx.restore();\
  4944. return;\
  4945. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4946.     break;
  4947.  
  4948.     case DRAW_DOTFILL:/* not  used for userdraw */
  4949. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4950. var draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4951. var obj;\
  4952. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4953.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4954. }\
  4955. else\
  4956. {\
  4957.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4958. };\
  4959. var ctx = obj.getContext(\"2d\");\
  4960. var x,y;\
  4961. ctx.closePath();\
  4962. ctx.save();\
  4963. snap_x = dx;snap_y = dy;\
  4964. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4965. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4966.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4967.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4968.   ctx.closePath();\
  4969.  }\
  4970. }\
  4971. ctx.fill();\
  4972. ctx.restore();\
  4973. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4974.     break;
  4975.  
  4976.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4977. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4978. var draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4979.  var obj;\
  4980. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4981.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4982. }\
  4983. else\
  4984. {\
  4985.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4986. };\
  4987. var ctx = obj.getContext(\"2d\");\
  4988. var x;\
  4989. var y;\
  4990. ctx.save();\
  4991. ctx.lineWidth = linewidth;\
  4992. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4993. y = ysize;\
  4994. for( x = x0 ; x < xsize ; x = x + dx ){\
  4995.  ctx.moveTo(x,y0);\
  4996.  ctx.lineTo(xsize,y);\
  4997.  y = y - dy;\
  4998. };\
  4999. y = y0;\
  5000. for( x = xsize ; x > 0 ; x = x - dx){\
  5001.  ctx.moveTo(x,ysize);\
  5002.  ctx.lineTo(x0,y);\
  5003.  y = y + dy;\
  5004. };\
  5005. x = x0;\
  5006. for( y = y0 ; y < ysize ; y = y + dy ){\
  5007.  ctx.moveTo(xsize,y);\
  5008.  ctx.lineTo(x,ysize);\
  5009.  x = x + dx;\
  5010. };\
  5011. x = xsize;\
  5012. for( y = ysize ; y > y0 ; y = y - dy ){\
  5013.  ctx.moveTo(x,y0);\
  5014.  ctx.lineTo(x0,y);\
  5015.  x = x - dx;\
  5016. };\
  5017. ctx.stroke();\
  5018. ctx.restore();\
  5019. return;\
  5020. }",canvas_root_id,canvas_root_id,canvas_root_id);
  5021.     break;
  5022.  
  5023.     case DRAW_HATCHFILL:/* not used for userdraw */
  5024. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  5025. var draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  5026.  var obj;\
  5027. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5028.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5029. }\
  5030. else\
  5031. {\
  5032.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5033. };\
  5034. var ctx = obj.getContext(\"2d\");\
  5035. var x;\
  5036. var y;\
  5037. ctx.save();\
  5038. ctx.lineWidth = linewidth;\
  5039. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5040. y = ysize;\
  5041. for( x = x0 ; x < xsize ; x = x + dx ){\
  5042.  ctx.moveTo(x,y0);\
  5043.  ctx.lineTo(xsize,y);\
  5044.  y = y - dy;\
  5045. };\
  5046. y = y0;\
  5047. for( x = xsize ; x >= dx ; x = x - dx){\
  5048.  ctx.moveTo(x,ysize);\
  5049.  ctx.lineTo(x0,y);\
  5050.  y = y + dy;\
  5051. };\
  5052. ctx.stroke();\
  5053. ctx.restore();\
  5054. return;\
  5055. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5056.     break;
  5057.     case DRAW_CIRCLES:/*  used for userdraw */
  5058. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  5059. 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){\
  5060. ctx.save();\
  5061. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5062. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5063. ctx.lineWidth = line_width;\
  5064. for(var p = 0 ; p < x_points.length ; p++ ){\
  5065.  ctx.beginPath();\
  5066.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  5067.  ctx.closePath();\
  5068.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5069.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5070.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5071.  ctx.stroke();\
  5072. }\
  5073. ctx.restore();\
  5074. return;\
  5075. };");
  5076.     break;
  5077.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  5078. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  5079. 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){\
  5080. ctx.save();\
  5081. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5082. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5083. ctx.lineWidth = line_width;\
  5084. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5085. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5086. ctx.clearRect(0,0,xsize,ysize);\
  5087. ctx.beginPath();\
  5088. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  5089.  ctx.moveTo(x_points[p],y_points[p]);\
  5090.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5091. }\
  5092. ctx.closePath();\
  5093. ctx.stroke();\
  5094. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5095. for(var p = 0 ; p < x_points.length ; p++ ){\
  5096.  ctx.beginPath();\
  5097.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  5098.  ctx.closePath();ctx.fill();ctx.stroke();\
  5099. };\
  5100. ctx.restore();\
  5101. return;\
  5102. };");
  5103.     break;
  5104.  
  5105.     case DRAW_SEGMENTS:/*  used for userdraw */
  5106. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  5107. 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){\
  5108. ctx.save();\
  5109. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5110. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5111. ctx.lineWidth = line_width;\
  5112. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5113. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5114. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5115.  ctx.beginPath();\
  5116.  ctx.moveTo(x_points[p],y_points[p]);\
  5117.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  5118.  ctx.closePath();\
  5119.  ctx.stroke();\
  5120.  }\
  5121.  ctx.restore();\
  5122.  return;\
  5123. };");
  5124.     break;
  5125.  
  5126.     case DRAW_LINES:/*  used for userdraw */
  5127. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  5128. function calc_line(x1,x2,y1,y2){\
  5129. var marge = 2;\
  5130. if(x1 < x2+marge && x1>x2-marge){\
  5131.  return [x1,0,x1,ysize];\
  5132. };\
  5133. if(y1 < y2+marge && y1>y2-marge){\
  5134.  return [0,y1,xsize,y1];\
  5135. };\
  5136. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  5137. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  5138. return [0,Y1,xsize,Y2];\
  5139. };\
  5140. 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){\
  5141. ctx.save();\
  5142. var line = new Array(4);\
  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. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5149.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  5150.  ctx.beginPath();\
  5151.  ctx.moveTo(line[0],line[1]);\
  5152.  ctx.lineTo(line[2],line[3]);\
  5153.  ctx.closePath();\
  5154.  ctx.stroke();\
  5155.  }\
  5156.  ctx.restore();\
  5157.  return;\
  5158. };");
  5159.     break;
  5160.  
  5161.     case DRAW_DEMILINES:/*  used for userdraw */
  5162. fprintf(js_include_file,"\n<!-- draw demilines -->\n\
  5163. function find_inf_point(x1,y1,x2,y2){\
  5164. if(x1<x2+2 && x1>x2-2){if(y1<y2){return [x1,y1,x1,ysize];}else{return [x1,0,x1,y1];};};\
  5165. var rc = (y2 - y1)/(x2 - x1);var q = y1 - (x1)*rc;\
  5166. if( x1 < x2 ){ return [x1,y1,xsize,rc*xsize+q];}else{return [x1,y1,0,q];};\
  5167. };\
  5168. 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){\
  5169. ctx.save();\
  5170. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5171. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5172. ctx.lineWidth = line_width;\
  5173. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5174. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5175. var pair = new Array(4);\
  5176. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  5177.  pair = find_inf_point(x_points[p],y_points[p],x_points[p+1],y_points[p+1]);\
  5178.  ctx.beginPath();\
  5179.  ctx.moveTo(pair[0],pair[1]);\
  5180.  ctx.lineTo(pair[2],pair[3]);\
  5181.  ctx.closePath();\
  5182.  ctx.stroke();\
  5183.  }\
  5184.  ctx.restore();\
  5185.  return;\
  5186. };");
  5187.     break;
  5188.  
  5189.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  5190. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  5191. var draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_affine,affine_matrix){\
  5192. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5193. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5194. ctx.lineWidth = line_width;\
  5195. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5196. var x1,x2,y1,y2;\
  5197. for(var p = 0 ; p < x_points.length ; p++ ){\
  5198.  x1 = x_points[p] - crosshair_size;\
  5199.  x2 = x_points[p] + crosshair_size;\
  5200.  y1 = y_points[p] - crosshair_size;\
  5201.  y2 = y_points[p] + crosshair_size;\
  5202.  ctx.beginPath();\
  5203.  ctx.moveTo(x1,y1);\
  5204.  ctx.lineTo(x2,y2);\
  5205.  ctx.closePath();\
  5206.  ctx.stroke();\
  5207.  ctx.beginPath();\
  5208.  ctx.moveTo(x2,y1);\
  5209.  ctx.lineTo(x1,y2);\
  5210.  ctx.closePath();\
  5211.  ctx.stroke();\
  5212. }\
  5213. ctx.restore();\
  5214.  return;\
  5215. };");
  5216.     break;
  5217.  
  5218.     case DRAW_RECTS:/*  used for userdraw */
  5219. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  5220. 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){\
  5221. ctx.save();\
  5222. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5223. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5224. ctx.lineWidth = line_width;\
  5225. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  5226. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  5227. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  5228.  ctx.beginPath();\
  5229.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  5230.  ctx.closePath();\
  5231.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5232.  ctx.stroke();\
  5233. };\
  5234. ctx.restore();\
  5235. return;\
  5236. };");
  5237.     break;
  5238.  
  5239.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  5240. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  5241. 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){\
  5242. ctx.save();\
  5243. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5244. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5245. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5246. var x,y,w,h,r;\
  5247. for(var p = 0; p < x_points.length; p = p+2){\
  5248.  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);\
  5249.  ctx.beginPath();ctx.moveTo(x + r, y);\
  5250.  ctx.lineTo(x + w - r, y);\
  5251.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  5252.  ctx.lineTo(x + w, y + h - r);\
  5253.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  5254.  ctx.lineTo(x + r, y + h);\
  5255.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  5256.  ctx.lineTo(x, y + r);\
  5257.  ctx.quadraticCurveTo(x, y, x + r, y);\
  5258.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  5259.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5260.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  5261.  ctx.stroke();\
  5262. }\
  5263. ctx.restore();\
  5264. };");
  5265.     break;
  5266.  
  5267.     case DRAW_ELLIPSES:/* not  used for userdraw */
  5268. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  5269. 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){\
  5270. var obj;\
  5271. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5272.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5273. }\
  5274. else\
  5275. {\
  5276.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5277. };\
  5278. var ctx = obj.getContext(\"2d\");\
  5279. ctx.save();\
  5280. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5281. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5282. var cx,cy,ry,rx;\
  5283. ctx.lineWidth = line_width;\
  5284. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  5285. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5286. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5287. for(var p=0;p< x_points.length;p = p+2){\
  5288.  ctx.beginPath();\
  5289.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  5290.  ctx.translate(cx - rx, cy - ry);\
  5291.  ctx.scale(rx, ry);\
  5292.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  5293.  if( use_filled == 1 ){ctx.fill();}\
  5294.  ctx.stroke();\
  5295. };\
  5296. ctx.restore();\
  5297. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5298.     break;
  5299.  
  5300.     case DRAW_PATHS: /*  used for userdraw */
  5301. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  5302. 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){\
  5303. ctx.save();\
  5304. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5305. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5306. ctx.lineWidth = line_width;\
  5307. ctx.lineJoin = \"round\";\
  5308. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5309. ctx.beginPath();\
  5310. ctx.moveTo(x_points[0],y_points[0]);\
  5311. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  5312. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  5313. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5314. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  5315. ctx.stroke();\
  5316. ctx.restore();\
  5317. return;\
  5318. };");
  5319.  
  5320.     break;
  5321.     case DRAW_ARROWS:/*  used for userdraw */
  5322. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  5323. 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){\
  5324. ctx.save();\
  5325. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  5326. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5327. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5328. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5329. ctx.lineWidth = line_width;\
  5330. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5331. ctx.lineCap = \"round\";\
  5332. var x1,y1,x2,y2,dx,dy,len;\
  5333. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  5334.   ctx.save();\
  5335.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  5336.   len = Math.sqrt(dx*dx+dy*dy);\
  5337.   ctx.translate(x2,y2);\
  5338.   ctx.rotate(Math.atan2(dy,dx));\
  5339.   ctx.lineCap = \"round\";\
  5340.   ctx.beginPath();\
  5341.   ctx.moveTo(0,0);\
  5342.   ctx.lineTo(-len,0);\
  5343.   ctx.closePath();\
  5344.   ctx.stroke();\
  5345.   ctx.beginPath();\
  5346.   ctx.moveTo(0,0);\
  5347.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5348.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5349.   ctx.closePath();\
  5350.   ctx.fill();\
  5351.   ctx.restore();\
  5352.   if( type == 2 ){\
  5353.     ctx.save();\
  5354.     ctx.translate(x1,y1);\
  5355.     ctx.rotate(Math.atan2(-dy,-dx));\
  5356.     ctx.beginPath();\
  5357.     ctx.moveTo(0,0);\
  5358.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  5359.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  5360.     ctx.closePath();\
  5361.     ctx.stroke();\
  5362.     ctx.fill();\
  5363.     ctx.restore();\
  5364.   }\
  5365.  }\
  5366.  ctx.restore();\
  5367.  return;\
  5368. };");
  5369.     break;
  5370.  
  5371.     case DRAW_VIDEO:/* not  used for userdraw */
  5372. fprintf(js_include_file,"\n<!-- draw video -->\n\
  5373. var draw_video = function(canvas_root_id,x,y,w,h,URL){\
  5374. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5375. var video_div = document.createElement(\"div\");\
  5376. canvas_div.appendChild(video_div);\
  5377. video_div.style.position = \"absolute\";\
  5378. video_div.style.left = x+\"px\";\
  5379. video_div.style.top = y+\"px\";\
  5380. video_div.style.width = w+\"px\";\
  5381. video_div.style.height = h+\"px\";\
  5382. var video = document.createElement(\"video\");\
  5383. video_div.appendChild(video);\
  5384. video.style.width = w+\"px\";\
  5385. video.style.height = h+\"px\";\
  5386. video.autobuffer = true;\
  5387. video.controls = true;video.autoplay = false;\
  5388. var src = document.createElement(\"source\");\
  5389. src.type = \"video/mp4\";\
  5390. src.src = URL;\
  5391. video.appendChild(src);\
  5392. video.load();\
  5393. return;\
  5394. };");
  5395.     break;
  5396.  
  5397.     case DRAW_AUDIO:/* not used for userdraw */
  5398. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  5399. var draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  5400. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5401. var audio_div = document.createElement(\"div\");\
  5402. canvas_div.appendChild(audio_div);\
  5403. audio_div.style.position = \"absolute\";\
  5404. audio_div.style.left = x+\"px\";\
  5405. audio_div.style.top = y+\"px\";\
  5406. audio_div.style.width = w+\"px\";\
  5407. audio_div.style.height = h+\"px\";\
  5408. var audio = document.createElement(\"audio\");\
  5409. audio_div.appendChild(audio);\
  5410. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  5411. audio.autobuffer = true;\
  5412. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  5413. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  5414. var src1 = document.createElement(\"source\");\
  5415. src1.type = \"audio/ogg\";\
  5416. src1.src = URL1;\
  5417. audio.appendChild(src1);\
  5418. var src2 = document.createElement(\"source\");\
  5419. src2.type = \"audio/mpeg\";\
  5420. src2.src = URL2;\
  5421. audio.appendChild(src2);\
  5422. audio.load();\
  5423. return;\
  5424. };");
  5425.     break;
  5426.  
  5427.     case DRAW_HTTP:/* not  used for userdraw */
  5428. fprintf(js_include_file,"\n<!-- draw http -->\n\
  5429. var draw_http = function(canvas_root_id,x,y,w,h,URL){\
  5430. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5431. var http_div = document.createElement(\"div\");\
  5432. var iframe = document.createElement(\"iframe\");\
  5433. canvas_div.appendChild(http_div);\
  5434. http_div.appendChild(iframe);\
  5435. iframe.src = URL;\
  5436. iframe.setAttribute(\"width\",w);\
  5437. iframe.setAttribute(\"height\",h);\
  5438. return;\
  5439. };");
  5440.     break;
  5441.  
  5442.     case DRAW_XML:
  5443. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  5444. var draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  5445. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  5446. var xml_div = document.createElement(\"div\");\
  5447. canvas_div.appendChild(xml_div);\
  5448. xml_div.innerHTML = mathml;\
  5449. if(onclick != 0){\
  5450.  xml_div.onclick = function(){\
  5451.   reply[0] = onclick;\
  5452.   alert(\"send \"+onclick+\" ?\");\
  5453.  };\
  5454. };\
  5455. xml_div.style.position = \"absolute\";\
  5456. xml_div.style.left = x+\"px\";\
  5457. xml_div.style.top = y+\"px\";\
  5458. xml_div.style.width = w+\"px\";\
  5459. xml_div.style.height = h+\"px\";\
  5460. return;\
  5461. };"
  5462. );
  5463.     break;
  5464.     case DRAW_SGRAPH:
  5465. /*
  5466.  xstart = given
  5467.  ystart = given
  5468.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  5469. */
  5470. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  5471. var draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  5472. 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);};\
  5473. var ctx = obj.getContext(\"2d\");\
  5474. ctx.font = fontfamily;\
  5475. var minor_opacity = 0.8*opacity;\
  5476. ctx.clearRect(0,0,xsize,ysize);\
  5477. var zero_x = 0.1*xsize;\
  5478. var zero_y = 0.9*ysize;\
  5479. var snor_x;var snor_y;\
  5480. if( xstart != xmin){\
  5481.  snor_x = 0.1*xsize;\
  5482. }\
  5483. else\
  5484. {\
  5485.  snor_x = 0;\
  5486.  xstart = xmin;\
  5487. };\
  5488. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5489. ctx.lineWidth = 2;\
  5490. ctx.beginPath();\
  5491. ctx.moveTo(xsize,zero_y);\
  5492. ctx.lineTo(zero_x,zero_y);\
  5493. ctx.lineTo(zero_x,0);\
  5494. ctx.stroke();\
  5495. ctx.closePath();\
  5496. ctx.beginPath();\
  5497. ctx.moveTo(zero_x,zero_y);\
  5498. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  5499. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  5500. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  5501. ctx.lineTo(zero_x + snor_x,zero_y);\
  5502. ctx.stroke();\
  5503. ctx.closePath();\
  5504. ctx.beginPath();\
  5505. var num = xstart;\
  5506. var flipflop = 1;\
  5507. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  5508. var txtsize;var txt_marge=step_x - 5;\
  5509. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5510.  txtsize = ctx.measureText(num).width;\
  5511.  if( txtsize > txt_marge ){if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};};\
  5512.  if( flipflop == 1){\
  5513.   ctx.fillText(num,x - 0.5*txtsize,zero_y+font_size);\
  5514.  }\
  5515.  else\
  5516.  {\
  5517.   ctx.fillText(num,x - 0.5*txtsize,zero_y+2*font_size);\
  5518.  }\
  5519.  num = num + xmajor;\
  5520. };\
  5521. ctx.stroke();\
  5522. ctx.closePath();\
  5523. ctx.lineWidth = 1;\
  5524. ctx.beginPath();\
  5525. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5526.   ctx.moveTo(x,zero_y);\
  5527.   ctx.lineTo(x,0);\
  5528. };\
  5529. ctx.stroke();\
  5530. ctx.closePath();\
  5531. if( xminor > 1){\
  5532.  ctx.lineWidth = 0.5;\
  5533.  ctx.beginPath();\
  5534.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5535.  var minor_step_x = step_x / xminor;\
  5536.  var nx;\
  5537.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  5538.    num = 1;\
  5539.    for(var p = 1 ; p < xminor ; p++){\
  5540.     nx = x + num*minor_step_x;\
  5541.     ctx.moveTo(nx,zero_y);\
  5542.     ctx.lineTo(nx,0);\
  5543.     num++;\
  5544.    };\
  5545.  };\
  5546.  ctx.stroke();\
  5547.  ctx.closePath();\
  5548.  ctx.beginPath();\
  5549.  ctx.lineWidth = 2;\
  5550.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5551.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  5552.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  5553.  };\
  5554.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  5555.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  5556.  };\
  5557.  ctx.stroke();\
  5558.  ctx.closePath();\
  5559.  ctx.lineWidth = 0.5;\
  5560. };\
  5561. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  5562. if( ystart != ymin){\
  5563.  snor_y = 0.1*ysize;\
  5564. }\
  5565. else\
  5566. {\
  5567.  snor_y = 0;\
  5568.  ystart = ymin;\
  5569. };\
  5570. ctx.lineWidth = 2;\
  5571. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5572. ctx.beginPath();\
  5573. ctx.moveTo(zero_x,zero_y);\
  5574. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  5575. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  5576. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  5577. ctx.lineTo(zero_x,zero_y - snor_y);\
  5578. ctx.stroke();\
  5579. ctx.closePath();\
  5580. ctx.beginPath();\
  5581. ctx.lineWidth = 1;\
  5582. num = ystart;\
  5583. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  5584. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  5585.  ctx.moveTo(zero_x,y);\
  5586.  ctx.lineTo(xsize,y);\
  5587.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  5588.  num = num + ymajor;\
  5589. };\
  5590. ctx.stroke();\
  5591. ctx.closePath();\
  5592. if( yminor > 1){\
  5593.  ctx.lineWidth = 0.5;\
  5594.  ctx.beginPath();\
  5595.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  5596.  var minor_step_y = step_y / yminor;\
  5597.  var ny;\
  5598.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  5599.   num = 1;\
  5600.   for(var p = 1 ;p < yminor;p++){\
  5601.     ny = y + num*minor_step_y;\
  5602.     ctx.moveTo(zero_x,ny);\
  5603.     ctx.lineTo(xsize,ny);\
  5604.     num++;\
  5605.    };\
  5606.  };\
  5607.  ctx.stroke();\
  5608.  ctx.closePath();\
  5609.  ctx.lineWidth = 2;\
  5610.  ctx.beginPath();\
  5611.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  5612.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  5613.   ctx.moveTo(zero_x,y);\
  5614.   ctx.lineTo(zero_x+12,y);\
  5615.  };\
  5616.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  5617.   ctx.moveTo(zero_x,y);\
  5618.   ctx.lineTo(zero_x+6,y);\
  5619.  };\
  5620.  ctx.stroke();\
  5621.  ctx.closePath();\
  5622. };\
  5623. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  5624. if( typeof legend%d  !== 'undefined' ){\
  5625.  ctx.globalAlpha = 1.0;\
  5626.  var y_offset = 2*font_size;\
  5627.  var txt;var txt_size;\
  5628.  var x_offset = xsize - 2*font_size;\
  5629.  var l_length = legend%d.length;var barcolor = new Array();\
  5630.  if( typeof legendcolors%d !== 'undefined' ){\
  5631.   for(var p = 0 ; p < l_length ; p++){\
  5632.    barcolor[p] = legendcolors%d[p];\
  5633.   };\
  5634.  }else{\
  5635.   if( barcolor.length == 0 ){\
  5636.    for(var p = 0 ; p < l_length ; p++){\
  5637.     barcolor[p] = stroke_color;\
  5638.    };\
  5639.   };\
  5640.  };\
  5641.  for(var p = 0; p < l_length; p++){\
  5642.   ctx.fillStyle = barcolor[p];\
  5643.   txt = legend%d[p];\
  5644.   txt_size = ctx.measureText(txt).width;\
  5645.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5646.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5647.  };\
  5648. };\
  5649. if( typeof xaxislabel !== 'undefined' ){\
  5650.   ctx.fillStyle = \'#000000\';\
  5651.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  5652.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  5653. };\
  5654. if( typeof yaxislabel !== 'undefined'){\
  5655.   ctx.save();\
  5656.   ctx.fillStyle = \'#000000\';\
  5657.   var txt_size = ctx.measureText(yaxislabel).width;\
  5658.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  5659.   ctx.rotate(-0.5*Math.PI);\
  5660.   ctx.fillText(yaxislabel,0,0);\
  5661.   ctx.restore();\
  5662. };\
  5663. };\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);
  5664.     break;
  5665.  
  5666.     case DRAW_GRID:/* not used for userdraw */
  5667. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  5668. 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){\
  5669. 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);};\
  5670. var ctx = obj.getContext(\"2d\");ctx.clearRect(0,0,xsize,ysize);\
  5671. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5672. ctx.save();\
  5673. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  5674. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  5675. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5676. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  5677. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  5678. ctx.font = font_family;\
  5679. var barcolor = new Array();\
  5680. var xstep = xsize*xmajor/(xmax - xmin);\
  5681. var ystep = ysize*ymajor/(ymax - ymin);\
  5682. var x2step = xstep / xminor;\
  5683. var y2step = ystep / yminor;\
  5684. var zero_x = x2px(0);;var zero_y = y2px(0);var f_x;var f_y;\
  5685. if(xmin < 0 ){ f_x = -1;}else{ f_x = 1;}\
  5686. if(ymin < 0 ){ f_y = -1;}else{ f_y = 1;}\
  5687. ctx.beginPath();\
  5688. ctx.lineWidth = line_width;\
  5689. ctx.strokeStyle = stroke_color;\
  5690. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5691. ctx.moveTo(p,0);\
  5692. ctx.lineTo(p,ysize);\
  5693. };\
  5694. for(var p = zero_x ; p > 0; p = p - xstep){\
  5695. ctx.moveTo(p,0);\
  5696. ctx.lineTo(p,ysize);\
  5697. };\
  5698. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5699. ctx.moveTo(0,p);\
  5700. ctx.lineTo(xsize,p);\
  5701. };\
  5702. for(var p = zero_y ; p > 0; p = p - ystep){\
  5703. ctx.moveTo(0,p);\
  5704. ctx.lineTo(xsize,p);\
  5705. };\
  5706. if( typeof xaxislabel !== 'undefined' ){\
  5707. ctx.save();\
  5708. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5709. var corr =  ctx.measureText(xaxislabel).width;\
  5710. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  5711. ctx.restore();\
  5712. };\
  5713. if( typeof yaxislabel !== 'undefined' ){\
  5714. ctx.save();\
  5715. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5716. var corr =  ctx.measureText(yaxislabel).width;\
  5717. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  5718. ctx.rotate(-0.5*Math.PI);\
  5719. ctx.fillText(yaxislabel,0,0);\
  5720. ctx.restore();\
  5721. };\
  5722. ctx.stroke();\
  5723. ctx.closePath();\
  5724. if( use_axis == 1 ){\
  5725. ctx.save();\
  5726. ctx.beginPath();\
  5727. ctx.strokeStyle = stroke_color;\
  5728. ctx.lineWidth = 0.6*line_width;\
  5729. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5730.  ctx.moveTo(p,0);\
  5731.  ctx.lineTo(p,ysize);\
  5732. };\
  5733. for(var p = zero_x ; p > 0; p = p - x2step){\
  5734.  ctx.moveTo(p,0);\
  5735.  ctx.lineTo(p,ysize);\
  5736. };\
  5737. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5738.  ctx.moveTo(0,p);\
  5739.  ctx.lineTo(xsize,p);\
  5740. };\
  5741. for(var p = zero_y ; p > 0; p = p - y2step){\
  5742.  ctx.moveTo(0,p);\
  5743.  ctx.lineTo(xsize,p);\
  5744. };\
  5745. ctx.stroke();\
  5746. ctx.closePath();\
  5747. ctx.beginPath();\
  5748. ctx.lineWidth = 2*line_width;\
  5749. ctx.strokeStyle = axis_color;\
  5750. ctx.moveTo(0,zero_y);\
  5751. ctx.lineTo(xsize,zero_y);\
  5752. ctx.moveTo(zero_x,0);\
  5753. ctx.lineTo(zero_x,ysize);\
  5754. ctx.stroke();\
  5755. ctx.closePath();\
  5756. ctx.lineWidth = line_width+0.5;\
  5757. ctx.beginPath();\
  5758. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5759.  ctx.moveTo(p,zero_y-tics_length);\
  5760.  ctx.lineTo(p,zero_y+tics_length);\
  5761. };\
  5762. for(var p = zero_x ; p > 0; p = p - xstep){\
  5763.  ctx.moveTo(p,zero_y-tics_length);\
  5764.  ctx.lineTo(p,zero_y+tics_length);\
  5765. };\
  5766. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5767.  ctx.moveTo(zero_x-tics_length,p);\
  5768.  ctx.lineTo(zero_x+tics_length,p);\
  5769. };\
  5770. for(var p = zero_y ; p > 0; p = p - ystep){\
  5771.  ctx.moveTo(zero_x-tics_length,p);\
  5772.  ctx.lineTo(zero_x+tics_length,p);\
  5773. };\
  5774. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5775.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5776.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5777. };\
  5778. for(var p = zero_x ; p > 0; p = p - x2step){\
  5779.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5780.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5781. };\
  5782. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5783.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5784.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5785. };\
  5786. for(var p = zero_y ; p > 0; p = p - y2step){\
  5787.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5788.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5789. };\
  5790. ctx.stroke();\
  5791. ctx.closePath();\
  5792. ctx.restore();\
  5793. };\
  5794. if( use_axis_numbering == 1 ){\
  5795. ctx.save();\
  5796. ctx.fillColor = axis_color;\
  5797. ctx.strokeStyle = axis_color;\
  5798. ctx.lineWidth = 2*line_width;\
  5799. ctx.font = font_family;\
  5800. var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5801. if( x_strings != null ){\
  5802.  var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5803.  ctx.beginPath();\
  5804.  for(var p = 0 ; p < len ; p = p+2){\
  5805.   var x_nums = x2px(eval(x_strings[p]));\
  5806.   var x_text = x_strings[p+1];\
  5807.   corr = ctx.measureText(x_text).width;\
  5808.   skip = 1.2*corr/xstep;\
  5809.   if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5810.   if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5811.   ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5812.   ctx.moveTo(x_nums,zero_y - tics_length);\
  5813.   ctx.lineTo(x_nums,zero_y + tics_length);\
  5814.  };\
  5815.  ctx.closePath();\
  5816. }\
  5817. else\
  5818. {\
  5819.  skip = 1;cnt = px2x(zero_x);\
  5820.  prec = Math.log(precision)/(Math.log(10));\
  5821.  var y_basis;if(f_y == 1){ y_basis = ysize }else{ y_basis = zero_y + 1.4*font_size;};\
  5822.  for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5823.   if(skip == 0 ){\
  5824.    disp_cnt = cnt.toFixed(prec);\
  5825.    corr = ctx.measureText(disp_cnt).width;\
  5826.    skip = parseInt(1.2*corr/xstep);\
  5827.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5828.   }\
  5829.   else\
  5830.   {\
  5831.    skip--;\
  5832.   };\
  5833.   cnt = cnt + xmajor;\
  5834.  };\
  5835.  cnt = px2x(zero_x);skip = 1;\
  5836.  for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5837.   if(skip == 0 ){\
  5838.    disp_cnt = cnt.toFixed(prec);\
  5839.    corr = ctx.measureText(disp_cnt).width;\
  5840.    skip = parseInt(1.2*corr/xstep);\
  5841.    ctx.fillText(disp_cnt,p-0.5*corr,y_basis);\
  5842.   }\
  5843.   else\
  5844.   {\
  5845.    skip--;\
  5846.   };\
  5847.   cnt = cnt - xmajor;\
  5848.  };\
  5849. };\
  5850. if( y_strings != null ){\
  5851.  var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5852.  ctx.beginPath();\
  5853.  for(var p = 0 ; p < len ; p = p+2){\
  5854.   var y_nums = y2px(eval(y_strings[p]));\
  5855.   var y_text = y_strings[p+1];\
  5856.   corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5857.   if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5858.   ctx.fillText(y_text,zero_x - corr,y_nums + 0.5*font_size);\
  5859.   ctx.moveTo(zero_x - tics_length,y_nums);\
  5860.   ctx.lineTo(zero_x + tics_length,y_nums);\
  5861.  };\
  5862.  ctx.closePath();\
  5863. }\
  5864. else\
  5865. {\
  5866.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5867.  cnt = px2y(zero_y);skip = 1;\
  5868.  for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5869.   if(skip == 0 ){\
  5870.    skip = parseInt(1.4*font_size/ystep);\
  5871.    disp_cnt = cnt.toFixed(prec);\
  5872.    if(f_x == -1 ){ corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5873.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5874.   }\
  5875.   else\
  5876.   {\
  5877.    skip--;\
  5878.   };\
  5879.   cnt = cnt - ymajor;\
  5880.  };\
  5881.  corr = 0;cnt = px2y(zero_y);skip = 1;\
  5882.  if(f_x == 1){ corr = 1.5*tics_length; }\
  5883.  for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5884.   if(skip == 0 ){\
  5885.    skip = parseInt(1.4*font_size/ystep);\
  5886.    disp_cnt = cnt.toFixed(prec);\
  5887.    if(f_x == -1 ){corr = parseInt(zero_x - (2 + tics_length + ctx.measureText(disp_cnt).width));};\
  5888.    ctx.fillText(disp_cnt,parseInt(corr),parseInt(p+(0.4*font_size)));\
  5889.   }\
  5890.   else\
  5891.   {\
  5892.    skip--;\
  5893.   };\
  5894.   cnt = cnt + ymajor;\
  5895.  };\
  5896. };\
  5897. ctx.stroke();\
  5898. ctx.restore();\
  5899. };\
  5900. if( typeof legend0  !== 'undefined' ){\
  5901. ctx.save();\
  5902. ctx.globalAlpha = 1.0;\
  5903. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5904. var y_offset = 2*font_size;\
  5905. var txt;var txt_size;\
  5906. var x_offset = xsize - 2*font_size;\
  5907. var l_length = legend0.length;\
  5908. if( typeof legendcolors0 !== 'undefined' ){\
  5909.  for(var p = 0 ; p < l_length ; p++){\
  5910.    barcolor[p] = legendcolors0[p];\
  5911.  };\
  5912. }\
  5913. else\
  5914. {\
  5915.  if( barcolor.length == 0 ){\
  5916.   for(var p = 0 ; p < l_length ; p++){\
  5917.    barcolor[p] = stroke_color;\
  5918.   };\
  5919.  };\
  5920. };\
  5921. for(var p = 0; p < l_length; p++){\
  5922.  ctx.fillStyle = barcolor[p];\
  5923.  txt = legend0[p];\
  5924.  txt_size = ctx.measureText(txt).width;\
  5925.  ctx.fillText(legend0[p],x_offset - txt_size, y_offset);\
  5926.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5927. };\
  5928. ctx.restore();\
  5929. };\
  5930. if( typeof barchart_0  !== 'undefined' ){\
  5931. ctx.save();\
  5932. var num_barcharts = 0;\
  5933. var bar_name = eval('barchart_0');\
  5934. while( typeof bar_name !== 'undefined' ){\
  5935.    try{ bar_name = eval('barchart_'+num_barcharts);num_barcharts++;}catch(e){break;};\
  5936. };\
  5937. var bar_width = parseInt(0.8*xstep/(num_barcharts));\
  5938. for(var i=0 ; i< num_barcharts ; i++){\
  5939.  bar_name = eval('barchart_'+i);\
  5940.  var bar_x = new Array();\
  5941.  var bar_y = new Array();\
  5942.  var lb = bar_name.length;\
  5943.  var idx = 0;\
  5944.  var dx = parseInt(0.5*i*bar_width);\
  5945.  for( var p = 0 ; p < lb ; p = p + 3 ){\
  5946.   bar_x[idx] = x2px(bar_name[p]);\
  5947.   bar_y[idx] = y2px(bar_name[p+1]);\
  5948.   barcolor[idx] = bar_name[p+2];\
  5949.   idx++;\
  5950.  };\
  5951.  ctx.globalAlpha = fill_opacity;\
  5952.  ctx.beginPath();\
  5953.  for( var p = 0; p < idx ; p++ ){\
  5954.   ctx.strokeStyle = barcolor[p];\
  5955.   ctx.fillStyle = barcolor[p];\
  5956.   ctx.rect(bar_x[p]-0.4*xstep+dx,bar_y[p],bar_width,zero_y - bar_y[p]);\
  5957.  };\
  5958.  ctx.fill();\
  5959.  ctx.stroke();\
  5960.  ctx.closePath();\
  5961. };\
  5962. ctx.restore();\
  5963. };\
  5964. if( typeof linegraph_0 !== 'undefined' ){\
  5965. ctx.save();\
  5966. ctx.globalAlpha = 1.0;\
  5967. var i = 0;\
  5968. var line_name = eval('linegraph_'+i);\
  5969. while ( typeof line_name !== 'undefined' ){\
  5970.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5971.  ctx.lineWidth = parseInt(line_name[1]);\
  5972.  if(line_name[2] == \"1\"){\
  5973.   var d1 = parseInt(line_name[3]);\
  5974.   var d2 = parseInt(line_name[4]);\
  5975.   if(ctx.setLineDash){ ctx.setLineDash([d1,d2]); } else { ctx.mozDash = [d1,d2];};\
  5976.  }\
  5977.  else\
  5978.  {\
  5979.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5980.  if(ctx.mozDash){ctx.mozDash = null;}\
  5981.  };\
  5982.  var data_x = new Array();\
  5983.  var data_y = new Array();\
  5984.  var lb = line_name.length;\
  5985.  var idx = 0;\
  5986.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5987.   data_x[idx] = x2px(line_name[p]);\
  5988.   data_y[idx] = y2px(line_name[p+1]);\
  5989.   idx++;\
  5990.  };\
  5991.  for( var p = 0; p < idx ; p++){\
  5992.   ctx.beginPath();\
  5993.   ctx.moveTo(data_x[p],data_y[p]);\
  5994.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5995.   ctx.stroke();\
  5996.   ctx.closePath();\
  5997.  };\
  5998.  i++;\
  5999.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  6000. };\
  6001. ctx.restore();\
  6002. };\
  6003. return;\
  6004. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6005.     break;
  6006.  
  6007.     case DRAW_PIECHART:
  6008. fprintf(js_include_file,"\n<!-- draw piecharts -->\n\
  6009. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,legend_cnt,font_family){\
  6010. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6011.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6012. }\
  6013. else\
  6014. {\
  6015.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6016. };\
  6017. var ld = data_color_list.length;\
  6018. var sum = 0;\
  6019. var idx = 0;\
  6020. var font_size = parseInt(font_family.replace(/[^0-9\\.]+/g, \"\"));\
  6021. var colors = new Array();\
  6022. var data = new Array();\
  6023. for(var p = 0;p < ld; p = p + 2){\
  6024.  data[idx] = parseFloat(data_color_list[p]);\
  6025.  sum = sum + data[idx];\
  6026.  colors[idx] = data_color_list[p+1];\
  6027.  idx++;\
  6028. };\
  6029. var ctx = obj.getContext(\"2d\");\
  6030. ctx.save();\
  6031. var angle;\
  6032. var angle_end = 0;\
  6033. var offset = Math.PI / 2;\
  6034. ctx.globalAlpha = fill_opacity;\
  6035. for(var p=0; p < idx; p++){\
  6036.  ctx.beginPath();\
  6037.  ctx.fillStyle = colors[p];\
  6038.  ctx.moveTo(x_center,y_center);\
  6039.  angle = Math.PI * (2 * data[p] / sum);\
  6040.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  6041.  ctx.lineTo(x_center, y_center);\
  6042.  ctx.fill();\
  6043.  ctx.closePath();\
  6044.  angle_end  = angle_end + angle;\
  6045. };\
  6046. if(typeof legend0 !== 'undefined'){\
  6047.  var legenda = eval(\"legend\"+legend_cnt);\
  6048.  ctx.globalAlpha = 1.0;\
  6049.  ctx.font = font_family;\
  6050.  var y_offset = font_size; \
  6051.  var x_offset = 0;\
  6052.  var txt;var txt_size;\
  6053.  for(var p = 0; p < idx; p++){\
  6054.   ctx.fillStyle = colors[p];\
  6055.   txt = legenda[p];\
  6056.   txt_size = ctx.measureText(txt).width;\
  6057.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  6058.   ctx.fillText(txt,x_center + radius - x_offset, y_center - radius + y_offset);\
  6059.   y_offset = parseInt(y_offset + 1.5*font_size);\
  6060.  };\
  6061. };\
  6062. ctx.restore();\
  6063. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6064.  
  6065.     break;
  6066.     case DRAW_ARCS:
  6067. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  6068. 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){\
  6069. ctx.save();\
  6070. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  6071. if( use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);};\
  6072. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  6073. if(end < start){var tmp = end;end = start;start=tmp;};\
  6074. start = 360 - start;\
  6075. end = 360 - end;\
  6076. ctx.lineWidth = line_width;\
  6077. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6078. ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  6079. ctx.beginPath();\
  6080. ctx.moveTo(xc,yc);\
  6081. ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  6082. ctx.lineTo(xc,yc);\
  6083. ctx.closePath();\
  6084. if( use_filled == 1 ){\
  6085.  ctx.fill();\
  6086. };\
  6087. ctx.stroke();\
  6088. ctx.restore();\
  6089. };");
  6090.  
  6091.     break;
  6092.     case DRAW_CENTERSTRING:
  6093. fprintf(js_include_file,"\n<!-- draw centerstring -->\n\
  6094. var draw_centerstring = function(canvas_type,y,font_family,stroke_color,stroke_opacity,text){\
  6095. var obj;\
  6096. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6097.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6098. }\
  6099. else\
  6100. {\
  6101.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6102. };\
  6103. var ctx = obj.getContext(\"2d\");\
  6104. ctx.save();\
  6105. ctx.font = font_family;\
  6106. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6107. var stringwidth = ctx.measureText(text).width;\
  6108. var x = parseInt((xsize - stringwidth)/2);if( x < 0 ){x = 0;};\
  6109. ctx.fillText(text,x,y2px(y));\
  6110. return;\
  6111. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6112.     break;
  6113.     case DRAW_TEXTS:
  6114. fprintf(js_include_file,"\n<!-- draw text -->\n\
  6115. 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){\
  6116.  var obj;\
  6117.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6118.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6119.  }\
  6120.  else\
  6121.  {\
  6122.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  6123.  };\
  6124.  var ctx = obj.getContext(\"2d\");\
  6125.  if(angle2 == 0 && angle != 0){\
  6126.   ctx.save();\
  6127.   if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6128.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6129.  };\
  6130.  if( font_family.indexOf('px') != null ){\
  6131.   ctx.font = font_family;\
  6132.  }\
  6133.  else\
  6134.  {\
  6135.   ctx.font = font_family;\
  6136.  };\
  6137.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6138.  if(angle2 != 0){\
  6139.   ctx.save();\
  6140.   ctx.translate(x,y);\
  6141.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  6142.   ctx.fillText(text,0,0);\
  6143.   ctx.restore();\
  6144.  }else{ctx.fillText(text,x,y);};\
  6145. ctx.restore();\
  6146. return;\
  6147. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6148.     break;
  6149.     case DRAW_CURVE:
  6150. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  6151. 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){\
  6152. var obj;\
  6153. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6154.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6155. }\
  6156. else\
  6157. {\
  6158.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6159. };\
  6160. var ctx = obj.getContext(\"2d\");\
  6161. ctx.save();\
  6162. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6163. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6164. ctx.beginPath();ctx.lineWidth = line_width;\
  6165. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  6166. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6167. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  6168. for(var p = 1 ; p < x_points.length ; p++){\
  6169.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  6170.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  6171.  }\
  6172.  else\
  6173.  {\
  6174.   ctx.stroke();\
  6175.   ctx.beginPath();\
  6176.   p++;\
  6177.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  6178.  };\
  6179. };\
  6180. ctx.stroke();\
  6181. ctx.restore();\
  6182. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6183.     break;
  6184.  
  6185.     case DRAW_INPUTS:
  6186. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  6187. var draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  6188. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6189. var input = document.createElement(\"input\");\
  6190. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6191. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6192. input.setAttribute(\"size\",size);\
  6193. input.setAttribute(\"value\",value);\
  6194. if( readonly == 0 || wims_status == \"done\" ){ input.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){input.setAttribute(\"value\",\"\");};};\
  6195. canvas_div.appendChild(input);};");
  6196.     break;
  6197.  
  6198.     case DRAW_TEXTAREAS:
  6199. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  6200. var draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  6201. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  6202. var textarea = document.createElement(\"textarea\");\
  6203. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  6204. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  6205. textarea.setAttribute(\"cols\",cols);\
  6206. textarea.setAttribute(\"rows\",rows);\
  6207. textarea.value = value;\
  6208. if( readonly == 0 || wims_status == \"done\" ){ textarea.setAttribute(\"readonly\",\"readonly\");if( wims_status == \"done\" ){textarea.value=\"\";};};\
  6209. canvas_div.appendChild(textarea);};");
  6210.     break;
  6211.  
  6212. case DRAW_PIXELS:
  6213. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  6214. var draw_setpixel = function(x,y,color,opacity,pixelsize){\
  6215. var canvas = create_canvas%d(10,xsize,ysize);\
  6216. var d = 0.5*pixelsize;\
  6217. var ctx = canvas.getContext(\"2d\");\
  6218. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  6219. ctx.clearRect(0,0,xsize,ysize);\
  6220. for(var p=0; p<x.length;p++){\
  6221.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  6222. };\
  6223. ctx.fill();ctx.stroke();\
  6224. };",canvas_root_id);
  6225. break;
  6226.  
  6227. case DRAW_CLOCK:
  6228. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  6229. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  6230. var clock_ctx = clock_canvas.getContext(\"2d\");\
  6231. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  6232. clock_ctx.clearRect(xc - radius,yc - radius,2*radius,2*radius);\
  6233. clock_ctx.save();\
  6234. clock_ctx.globalAlpha = clock_bg_opacity;\
  6235. this.type = type || 0;\
  6236. this.interaction = interaction || 0;\
  6237. this.H = H;\
  6238. this.M = M;\
  6239. this.S = S;\
  6240. if(this.S == -1){this.S = 59;this.M = this.M - 1;};\
  6241. if(this.M == -1){this.M = 59;this.H = this.H - 1;};\
  6242. if(this.H == -1){this.H = 11;};\
  6243. this.xc = xc || xsize/2;\
  6244. this.yc = yc || ysize/2;\
  6245. this.radius = radius || xsize/4;\
  6246. var font_size = parseInt(0.2*this.radius);\
  6247. this.H_color = h_color || \"blue\";\
  6248. this.M_color = m_color || \"blue\";\
  6249. this.S_color = s_color || \"blue\";\
  6250. this.fg_color = fg_color || \"red\";\
  6251. this.bg_color = bg_color || \"white\";\
  6252. clock_ctx.translate(this.xc,this.yc);\
  6253. clock_ctx.beginPath();\
  6254. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  6255. clock_ctx.fillStyle = this.bg_color;\
  6256. clock_ctx.fill();\
  6257. clock_ctx.closePath();\
  6258. clock_ctx.beginPath();\
  6259. clock_ctx.font = font_size+\"px Arial\";\
  6260. clock_ctx.fillStyle = this.fg_color;\
  6261. clock_ctx.textAlign = \"center\";\
  6262. clock_ctx.textBaseline = 'middle';\
  6263. var angle;var x1,y1,x2,y2;\
  6264. var angle_cos;var angle_sin;\
  6265. clock_ctx.globalAlpha = clock_fg_opacity;\
  6266. switch(type){\
  6267. case 0:clock_ctx.beginPath();\
  6268. for(var p = 1; p <= 12 ; p++){\
  6269.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6270.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6271.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6272.  clock_ctx.moveTo(x1,y1);\
  6273.  clock_ctx.lineTo(x2,y2);\
  6274. };\
  6275. for(var p = 1; p <= 60 ; p++){\
  6276.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6277.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6278.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6279.  clock_ctx.moveTo(x1,y1);\
  6280.  clock_ctx.lineTo(x2,y2);\
  6281. };\
  6282. clock_ctx.closePath();\
  6283. clock_ctx.stroke();\
  6284. break;\
  6285. case 1:\
  6286. 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;\
  6287. case 2:\
  6288. 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);};\
  6289. clock_ctx.beginPath();\
  6290. for(var p = 1; p <= 12 ; p++){\
  6291.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  6292.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  6293.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6294.  clock_ctx.moveTo(x1,y1);\
  6295.  clock_ctx.lineTo(x2,y2);\
  6296. };\
  6297. for(var p = 1; p <= 60 ; p++){\
  6298.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  6299.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  6300.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  6301.  clock_ctx.moveTo(x1,y1);\
  6302.  clock_ctx.lineTo(x2,y2);\
  6303. };\
  6304. clock_ctx.closePath();\
  6305. clock_ctx.stroke();\
  6306. break;\
  6307. };\
  6308. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  6309. clock_ctx.rotate(angle);\
  6310. clock_ctx.beginPath();\
  6311. clock_ctx.moveTo(-3, -2);\
  6312. clock_ctx.lineTo(-3, 2);\
  6313. clock_ctx.lineTo(this.radius * 0.7, 1);\
  6314. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  6315. clock_ctx.fillStyle = this.H_color;\
  6316. clock_ctx.fill();\
  6317. clock_ctx.rotate(-angle);\
  6318. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  6319. clock_ctx.rotate(angle);\
  6320. clock_ctx.beginPath();\
  6321. clock_ctx.moveTo(-3, -2);\
  6322. clock_ctx.lineTo(-3, 2);\
  6323. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  6324. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  6325. clock_ctx.fillStyle = this.M_color;\
  6326. clock_ctx.fill();\
  6327. clock_ctx.rotate(-angle);\
  6328. angle = (this.S - 15) * 2 * Math.PI / 60;\
  6329. clock_ctx.rotate(angle);\
  6330. clock_ctx.beginPath();\
  6331. clock_ctx.moveTo(0,0);\
  6332. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  6333. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  6334. clock_ctx.strokeStyle = this.S_color;\
  6335. clock_ctx.stroke();\
  6336. clock_ctx.restore();\
  6337. };",canvas_root_id,CLOCK_CANVAS);
  6338. break;
  6339.  
  6340. case DRAW_LATTICE:
  6341. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  6342. 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){\
  6343. var obj;\
  6344. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6345.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6346. }\
  6347. else\
  6348. {\
  6349.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6350. };\
  6351. var ctx = obj.getContext(\"2d\");\
  6352. ctx.save();\
  6353. if(use_affine == 1 ){ctx.translate(affine_matrix[4],affine_matrix[5]);}\
  6354. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  6355. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6356. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  6357. var radius = line_width;\
  6358. var x = 0;\
  6359. var y = 0;\
  6360. var x_step_px = xsize/(xmax-xmin);\
  6361. var y_step_px = ysize/(ymax-ymin);\
  6362. var xv1 = dx1*x_step_px;\
  6363. var yv1 = dy1*y_step_px;\
  6364. var xv2 = dx2*x_step_px;\
  6365. var yv2 = dy2*y_step_px;\
  6366. for(var p = 0; p < n1 ;p++){\
  6367.  x = p*xv1 + x0;\
  6368.  y = p*yv1 + y0;\
  6369.  for(var c = 0; c < n2 ; c++){\
  6370.   ctx.beginPath();\
  6371.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  6372.   ctx.fill();\
  6373.   ctx.stroke();\
  6374.   ctx.closePath();\
  6375.  };\
  6376. };\
  6377. ctx.restore();\
  6378. return;\
  6379. };",canvas_root_id,canvas_root_id,canvas_root_id);
  6380.     break;
  6381. case DRAW_XYLOGSCALE:
  6382. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  6383. 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){\
  6384. var obj;\
  6385. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6386.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6387. }\
  6388. else\
  6389. {\
  6390.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6391. };\
  6392. var ctx = obj.getContext(\"2d\");\
  6393. ctx.clearRect(0,0,xsize,ysize);\
  6394. ctx.save();\
  6395. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  6396. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6397. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6398. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6399. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6400. if(use_axis_numbering == 1){\
  6401.  ctx.font = font_family;\
  6402.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\
  6403.  ymarge = parseInt(1.5*font_size);\
  6404.  ctx.save();\
  6405.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6406.  ctx.rect(0,0,xmarge,ysize);\
  6407.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6408.  ctx.fill();\
  6409.  ctx.restore();\
  6410. }else{xmarge = 0;ymarge = 0;};\
  6411. if( typeof xaxislabel !== 'undefined' ){\
  6412.  ctx.save();\
  6413.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6414.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6415.  corr =  ctx.measureText(xaxislabel).width;\
  6416.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6417.  ctx.restore();\
  6418. };\
  6419. if( typeof yaxislabel !== 'undefined' ){\
  6420.  ctx.save();\
  6421.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6422.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6423.  corr = ctx.measureText(yaxislabel).width;\
  6424.  ctx.translate(xmarge+font_size,corr+font_size);\
  6425.  ctx.rotate(-0.5*Math.PI);\
  6426.  ctx.fillText(yaxislabel,0,0);\
  6427.  ctx.restore();\
  6428. };\
  6429. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6430. ctx.lineWidth = line_width;\
  6431. for(var p = x_min; p <= x_max ; p++){\
  6432.  num = Math.pow(xlogbase,p);\
  6433.  for(var i = 1 ; i < xlogbase ; i++){\
  6434.   x_e = x2px(i*num);\
  6435.   if( i == 1 ){\
  6436.    ctx.lineWidth = line_width;\
  6437.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6438.    if( use_axis_numbering == 1 && p > x_min){\
  6439.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6440.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6441.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6442.    };\
  6443.   }else{\
  6444.    ctx.lineWidth = 0.2*line_width;\
  6445.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6446.   };\
  6447.   if( x_e >= xmarge ){\
  6448.    ctx.beginPath();\
  6449.    ctx.moveTo(x_e,0);\
  6450.    ctx.lineTo(x_e,ysize - ymarge);\
  6451.    ctx.stroke();\
  6452.    ctx.closePath();\
  6453.   };\
  6454.  };\
  6455. };\
  6456. for(var p = y_min; p <= y_max ; p++){\
  6457.  num = Math.pow(ylogbase,p);\
  6458.  for(var i = 1 ; i < ylogbase ; i++){\
  6459.   y_e = y2px(i*num);\
  6460.   if( i == 1 ){\
  6461.    ctx.lineWidth = line_width;\
  6462.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6463.    if( use_axis_numbering == 1 && p > y_min){\
  6464.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6465.    };\
  6466.   }else{\
  6467.    ctx.lineWidth = 0.2*line_width;\
  6468.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6469.   };\
  6470.   ctx.beginPath();\
  6471.   ctx.moveTo(xmarge,y_e);\
  6472.   ctx.lineTo(xsize,y_e);\
  6473.   ctx.stroke();\
  6474.   ctx.closePath();\
  6475.  };\
  6476. };\
  6477. ctx.restore();\
  6478. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6479.     break;
  6480.  
  6481. case DRAW_XLOGSCALE:
  6482. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  6483. 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){\
  6484. var obj;\
  6485. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6486.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6487. }\
  6488. else\
  6489. {\
  6490.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6491. };\
  6492. var ctx = obj.getContext(\"2d\");\
  6493. ctx.clearRect(0,0,xsize,ysize);\
  6494. ctx.save();\
  6495. ctx.lineWidth = line_width;\
  6496. var prec = Math.log(precision)/Math.log(10);\
  6497. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  6498. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  6499. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  6500. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  6501. if(use_axis_numbering == 1){\
  6502.  ctx.font = font_family;\
  6503.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\
  6504.  ymarge = parseInt(1.5*font_size);\
  6505.  ctx.save();\
  6506.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6507.  ctx.rect(0,0,xmarge,ysize);\
  6508.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6509.  ctx.fill();\
  6510.  ctx.restore();\
  6511. }else{xmarge = 0;ymarge = 0;};\
  6512. if( typeof xaxislabel !== 'undefined' ){\
  6513.  ctx.save();\
  6514.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6515.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6516.  corr =  ctx.measureText(xaxislabel).width;\
  6517.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6518.  ctx.restore();\
  6519. };\
  6520. if( typeof yaxislabel !== 'undefined' ){\
  6521.  ctx.save();\
  6522.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6523.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6524.  corr = ctx.measureText(yaxislabel).width;\
  6525.  ctx.translate(xmarge+font_size,corr+font_size);\
  6526.  ctx.rotate(-0.5*Math.PI);\
  6527.  ctx.fillText(yaxislabel,0,0);\
  6528.  ctx.restore();\
  6529. };\
  6530. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6531. ctx.lineWidth = line_width;\
  6532. for(var p = x_min; p <= x_max ; p++){\
  6533.  num = Math.pow(xlogbase,p);\
  6534.  for(var i = 1 ; i < xlogbase ; i++){\
  6535.   x_e = x2px(i*num);\
  6536.   if( i == 1 ){\
  6537.     ctx.lineWidth = line_width;\
  6538.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6539.    if( use_axis_numbering == 1 && p > x_min ){\
  6540.      xtxt = xlogbase+'^'+p.toFixed(0);\
  6541.      corr = 0.5*(ctx.measureText(xtxt).width);\
  6542.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  6543.    };\
  6544.   }else{\
  6545.    ctx.lineWidth = 0.2*line_width;\
  6546.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6547.   };\
  6548.   if( x_e >= xmarge ){\
  6549.    ctx.beginPath();\
  6550.    ctx.moveTo(x_e,0);\
  6551.    ctx.lineTo(x_e,ysize - ymarge);\
  6552.    ctx.stroke();\
  6553.    ctx.closePath();\
  6554.   };\
  6555.  };\
  6556. };\
  6557. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  6558. var minor_step = stepy / yminor;\
  6559. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  6560.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6561.  ctx.lineWidth = line_width;\
  6562.  ctx.beginPath();\
  6563.  ctx.moveTo(xmarge,y);\
  6564.  ctx.lineTo(xsize,y);\
  6565.  ctx.stroke();\
  6566.  ctx.closePath();\
  6567.  if( use_axis_numbering == 1){\
  6568.   ytxt = (px2y(y)).toFixed(prec);\
  6569.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  6570.  };\
  6571.  for(var dy = 1 ; dy < yminor ; dy++){\
  6572.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6573.   ctx.lineWidth = 0.2*line_width;\
  6574.   ctx.beginPath();\
  6575.   ctx.moveTo(xmarge,y+dy*minor_step);\
  6576.   ctx.lineTo(xsize,y+dy*minor_step);\
  6577.   ctx.stroke();\
  6578.   ctx.closePath();\
  6579.  };\
  6580. };\
  6581. ctx.restore();\
  6582. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6583.     break;
  6584. case DRAW_YLOGSCALE:
  6585. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  6586. 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){\
  6587. var obj;\
  6588. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  6589.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  6590. }\
  6591. else\
  6592. {\
  6593.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  6594. };\
  6595. var ctx = obj.getContext(\"2d\");\
  6596. ctx.clearRect(0,0,xsize,ysize);\
  6597. ctx.save();\
  6598. ctx.lineWidth = line_width;\
  6599. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  6600. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  6601. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;var xmarge;var ymarge;\
  6602. if(use_axis_numbering == 1){\
  6603.  ctx.font = font_family;\
  6604.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\
  6605.  ymarge = 2*font_size;\
  6606.  ctx.save();\
  6607.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\
  6608.  ctx.rect(0,0,xmarge,ysize);\
  6609.  ctx.rect(0,ysize-ymarge,xsize,ysize);\
  6610.  ctx.fill();\
  6611.  ctx.restore();\
  6612. }else{xmarge = 0;ymarge = 0;};\
  6613. if( typeof xaxislabel !== 'undefined' ){\
  6614.  ctx.save();\
  6615.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6616.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6617.  corr =  ctx.measureText(xaxislabel).width;\
  6618.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\
  6619.  ctx.restore();\
  6620. };\
  6621. if( typeof yaxislabel !== 'undefined' ){\
  6622.  ctx.save();\
  6623.  ctx.font = \"italic \"+font_size+\"px Ariel\";\
  6624.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6625.  corr = ctx.measureText(yaxislabel).width;\
  6626.  ctx.translate(xmarge+font_size,corr+font_size);\
  6627.  ctx.rotate(-0.5*Math.PI);\
  6628.  ctx.fillText(yaxislabel,0,0);\
  6629.  ctx.restore();\
  6630. };\
  6631. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\
  6632. ctx.lineWidth = line_width;\
  6633. for(var p = y_min; p <= y_max ; p++){\
  6634.  num = Math.pow(ylogbase,p);\
  6635.  for(var i = 1 ; i < ylogbase ; i++){\
  6636.   y_e = y2px(i*num);\
  6637.   if( i == 1 ){\
  6638.    ctx.lineWidth = line_width;\
  6639.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6640.    if( use_axis_numbering == 1 && p > y_min){\
  6641.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  6642.    };\
  6643.   }else{\
  6644.    ctx.lineWidth = 0.2*line_width;\
  6645.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6646.   };\
  6647.   ctx.beginPath();\
  6648.   ctx.moveTo(xmarge,y_e);\
  6649.   ctx.lineTo(xsize,y_e);\
  6650.   ctx.stroke();\
  6651.   ctx.closePath();\
  6652.  };\
  6653. };\
  6654. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  6655. var minor_step = stepx / xminor;\
  6656. var prec = Math.log(precision)/Math.log(10);\
  6657. var xtxt;var corr;var flip = 0;\
  6658. for(var x = stepx ; x < xsize ; x = x + stepx){\
  6659.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  6660.  ctx.lineWidth = line_width;\
  6661.  ctx.beginPath();\
  6662.  ctx.moveTo(x,ysize-ymarge);\
  6663.  ctx.lineTo(x,0);\
  6664.  ctx.stroke();\
  6665.  ctx.closePath();\
  6666.  if( use_axis_numbering == 1){\
  6667.   xtxt = (px2x(x)).toFixed(prec);\
  6668.   corr = 0.5*(ctx.measureText(xtxt).width);\
  6669.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  6670.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  6671.  };\
  6672.  for(var dx = 1 ; dx < xminor ; dx++){\
  6673.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  6674.   ctx.lineWidth = 0.2*line_width;\
  6675.   ctx.beginPath();\
  6676.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  6677.   ctx.lineTo(x+dx*minor_step,0);\
  6678.   ctx.stroke();\
  6679.   ctx.closePath();\
  6680.  };\
  6681. };\
  6682. ctx.restore();\
  6683. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  6684.     break;
  6685.     default:break;
  6686.    }
  6687.   }
  6688.  }
  6689.   return;
  6690. }
  6691.  
  6692. void check_string_length(int L){
  6693.  if(L<1 || L > MAX_BUFFER-1){
  6694.   canvas_error("problem with your arguments to command...");
  6695.  }
  6696.  return;
  6697. }
  6698.  
  6699.  
  6700. int get_token(FILE *infile){
  6701.         int     c,i=0;
  6702.         char    temp[MAX_INT], *input_type;
  6703.         char    *line="line",
  6704.         *audio="audio",
  6705.         *blink="blink",
  6706.         *arrowhead="arrowhead",
  6707.         *crosshairsize="crosshairsize",
  6708.         *crosshair="crosshair",
  6709.         *crosshairs="crosshairs",
  6710.         *audioobject="audioobject",
  6711.         *style="style",
  6712.         *mouse="mouse",
  6713.         *mousex="mousex",
  6714.         *mousey="mousey",
  6715.         *mouse_display="display",
  6716.         *mouse_degree="mouse_degree",
  6717.         *userdraw="userdraw",
  6718.         *highlight="highlight",
  6719.         *http="http",
  6720.         *rays="rays",
  6721.         *dashtype="dashtype",
  6722.         *dashed="dashed",
  6723.         *filled="filled",
  6724.         *lattice="lattice",
  6725.         *parallel="parallel",
  6726.         *segment="segment",
  6727.         *segments="segments",
  6728.         *dsegment="dsegment",
  6729.         *seg="seg",
  6730.         *bgimage="bgimage",
  6731.         *bgcolor="bgcolor",
  6732.         *strokecolor="strokecolor",
  6733.         *backgroundimage="backgroundimage",
  6734.         *text="text",
  6735.         *textup="textup",
  6736.         *mouseprecision="mouseprecision",
  6737.         *precision="precision",
  6738.         *plotsteps="plotsteps",
  6739.         *plotstep="plotstep",
  6740.         *tsteps="tsteps",
  6741.         *curve="curve",
  6742.         *dcurve="dcurve",
  6743.         *plot="plot",
  6744.         *dplot="dplot",
  6745.         *levelcurve="levelcurve",
  6746.         *fontsize="fontsize",
  6747.         *fontcolor="fontcolor",
  6748.         *axis="axis",
  6749.         *axisnumbering="axisnumbering",
  6750.         *axisnumbers="axisnumbers",
  6751.         *arrow="arrow",
  6752.         *darrow="darrow",
  6753.         *arrow2="arrow2",
  6754.         *darrow2="darrow2",
  6755.         *zoom="zoom",
  6756.         *grid="grid",
  6757.         *hline="hline",
  6758.         *dhline="dhline",
  6759.         *drag="drag",
  6760.         *horizontalline="horizontalline",
  6761.         *vline="vline",
  6762.         *dvline="dvline",
  6763.         *verticalline="verticalline",
  6764.         *triangle="triangle",
  6765.         *ftriangle="ftriangle",
  6766.         *mathml="mathml",
  6767.         *html="html",
  6768.         *input="input",
  6769.         *clearbutton="clearbutton",
  6770.         *inputstyle="inputstyle",
  6771.         *textarea="textarea",
  6772.         *trange="trange",
  6773.         *ranget="ranget",
  6774.         *xrange="xrange",
  6775.         *yrange="yrange",
  6776.         *rangex="rangex",
  6777.         *rangey="rangey",
  6778.         *polyline="polyline",
  6779.         *lines="lines",
  6780.         *poly="poly",
  6781.         *polygon="polygon",
  6782.         *fpolygon="fpolygon",
  6783.         *fpoly="fpoly",
  6784.         *filledpoly="filledpoly",
  6785.         *filledpolygon="filledpolygon",
  6786.         *rect="rect",
  6787.         *frect="frect",
  6788.         *rectangle="rectangle",
  6789.         *frectangle="frectangle",
  6790.         *square="square",
  6791.         *fsquare="fsquare",
  6792.         *dline="dline",
  6793.         *arc="arc",
  6794.         *filledarc="filledarc",
  6795.         *size="size",
  6796.         *string="string",
  6797.         *stringup="stringup",
  6798.         *copy="copy",
  6799.         *copyresized="copyresized",
  6800.         *opacity="opacity",
  6801.         *transparent="transparent",
  6802.         *fill="fill",
  6803.         *point="point",
  6804.         *points="points",
  6805.         *linewidth="linewidth",
  6806.         *circle="circle",
  6807.         *fcircle="fcircle",
  6808.         *disk="disk",
  6809.         *comment="#",
  6810.         *end="end",
  6811.         *ellipse="ellipse",
  6812.         *fellipse="fellipse",
  6813.         *rotate="rotate",
  6814.         *affine="affine",
  6815.         *killaffine="killaffine",
  6816.         *fontfamily="fontfamily",
  6817.         *fillcolor="fillcolor",
  6818.         *clicktile="clicktile",
  6819.         *clicktile_colors="clicktile_colors",
  6820.         *translation="translation",
  6821.         *translate="translate",
  6822.         *killtranslation="killtranslation",
  6823.         *killtranslate="killtranslate",
  6824.         *onclick="onclick",
  6825.         *roundrect="roundrect",
  6826.         *froundrect="froundrect",
  6827.         *roundrectangle="roundrectangle",
  6828.         *patternfill="patternfill",
  6829.         *hatchfill="hatchfill",
  6830.         *diafill="diafill",
  6831.         *diamondfill="diamondfill",
  6832.         *dotfill="dotfill",
  6833.         *gridfill="gridfill",
  6834.         *imagefill="imagefill",
  6835.         *xlogbase="xlogbase",
  6836.         *ylogbase="ylogbase",
  6837.         *xlogscale="xlogscale",
  6838.         *ylogscale="ylogscale",
  6839.         *xylogscale="xylogscale",
  6840.         *intooltip="intooltip",
  6841.         *replyformat="replyformat",
  6842.         *floodfill="floodfill",
  6843.         *filltoborder="filltoborder",
  6844.         *clickfill="clickfill",
  6845.         *setpixel="setpixel",
  6846.         *pixels="pixels",
  6847.         *pixelsize="pixelsize",
  6848.         *clickfillmarge="clickfillmarge",
  6849.         *xaxis="xaxis",
  6850.         *yaxis="yaxis",
  6851.         *xaxistext="xaxistext",
  6852.         *yaxistext="yaxistext",
  6853.         *piechart="piechart",
  6854.         *legend="legend",
  6855.         *legendcolors="legendcolors",
  6856.         *xlabel="xlabel",
  6857.         *ylabel="ylabel",
  6858.         *barchart="barchart",
  6859.         *linegraph="linegraph",
  6860.         *clock="clock",
  6861.         *animate="animate",
  6862.         *video="video",
  6863.         *status="status",
  6864.         *nostatus="nostatus",
  6865.         *snaptogrid="snaptogrid",
  6866.         *xsnaptogrid="xsnaptogrid",
  6867.         *ysnaptogrid="ysnaptogrid",
  6868.         *userinput_xy="userinput_xy",
  6869.         *userinput_function="userinput_function",
  6870.         *usertextarea_xy="usertextarea_xy",
  6871.         *userinput="userinput",
  6872.         *jsmath="jsmath",
  6873.         *trace_jscurve="trace_jscurve",
  6874.         *setlimits="setlimits",
  6875.         *jscurve="jscurve",
  6876.         *jsplot="jsplot",
  6877.         *sgraph="sgraph",
  6878.         *title="title",
  6879.         *centerstring="centerstring",
  6880.         *xunit="xunit",
  6881.         *yunit="yunit",
  6882.         *slider="slider",
  6883.         *killslider="killslider",
  6884.         *angle="angle",
  6885.         *halfline="halfline",
  6886.         *demiline="demiline",
  6887.         *functionlabel="functionlabel";
  6888.  
  6889.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6890.             if( i == 0 && (c == ' ' || c == '\t') ){
  6891.         continue; /* white spaces or tabs allowed before first command identifier */
  6892.             }
  6893.             else
  6894.             {
  6895.         if( c == ' ' || c == '\t' ){
  6896.             break;
  6897.         }
  6898.         else
  6899.         {
  6900.             temp[i] = c;
  6901.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6902.             i++;
  6903.         }
  6904.             }
  6905.             if(temp[0] == '#') break;
  6906.         }
  6907.         if (c == EOF) finished = 1;
  6908.  
  6909.         if (c == '\n' || c == '\r') {
  6910.         line_number++;
  6911.         if (i == 0) { return EMPTY; }
  6912.         } else if (c == EOF) {
  6913.         return 0;
  6914.         }
  6915.  
  6916.         temp[i]='\0';
  6917.         input_type=(char*)my_newmem(strlen(temp));
  6918.         snprintf(input_type,sizeof(temp),"%s",temp);
  6919.  
  6920.         if( strcmp(input_type, size) == 0 ){
  6921.         free(input_type);
  6922.         return SIZE;
  6923.         }
  6924.         if( strcmp(input_type, xrange) == 0 ){
  6925.         free(input_type);
  6926.         return XRANGE;
  6927.         }
  6928.         if( strcmp(input_type, rangex) == 0 ){
  6929.         free(input_type);
  6930.         return XRANGE;
  6931.         }
  6932.         if( strcmp(input_type, trange) == 0 ){
  6933.         free(input_type);
  6934.         return TRANGE;
  6935.         }
  6936.         if( strcmp(input_type, ranget) == 0 ){
  6937.         free(input_type);
  6938.         return TRANGE;
  6939.         }
  6940.         if( strcmp(input_type, yrange) == 0 ){
  6941.         free(input_type);
  6942.         return YRANGE;
  6943.         }
  6944.         if( strcmp(input_type, rangey) == 0 ){
  6945.         free(input_type);
  6946.         return YRANGE;
  6947.         }
  6948.         if( strcmp(input_type, linewidth) == 0 ){
  6949.         free(input_type);
  6950.         return LINEWIDTH;
  6951.         }
  6952.         if( strcmp(input_type, dashed) == 0 ){
  6953.         free(input_type);
  6954.         return DASHED;
  6955.         }
  6956.         if( strcmp(input_type, dashtype) == 0 ){
  6957.         free(input_type);
  6958.         return DASHTYPE;
  6959.         }
  6960.         if( strcmp(input_type, axisnumbering) == 0 ){
  6961.         free(input_type);
  6962.         return AXIS_NUMBERING;
  6963.         }
  6964.         if( strcmp(input_type, axisnumbers) == 0 ){
  6965.         free(input_type);
  6966.         return AXIS_NUMBERING;
  6967.         }
  6968.         if( strcmp(input_type, axis) == 0 ){
  6969.         free(input_type);
  6970.         return AXIS;
  6971.         }
  6972.         if( strcmp(input_type, grid) == 0 ){
  6973.         free(input_type);
  6974.         return GRID;
  6975.         }
  6976.         if( strcmp(input_type, parallel) == 0 ){
  6977.         free(input_type);
  6978.         return PARALLEL;
  6979.         }
  6980.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6981.         free(input_type);
  6982.         return HLINE;
  6983.         }
  6984.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6985.         free(input_type);
  6986.         return VLINE;
  6987.         }
  6988.         if( strcmp(input_type, line) == 0 ){
  6989.         free(input_type);
  6990.         return LINE;
  6991.         }
  6992.         if( strcmp(input_type, segments) == 0 ){
  6993.         free(input_type);
  6994.         return SEGMENTS;
  6995.         }
  6996.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6997.         free(input_type);
  6998.         return SEGMENT;
  6999.         }
  7000.         if( strcmp(input_type, dsegment) == 0 ){
  7001.         free(input_type);
  7002.         use_dashed = TRUE;
  7003.         return SEGMENT;
  7004.         }
  7005.         if( strcmp(input_type, crosshairsize) == 0 ){
  7006.         free(input_type);
  7007.         return CROSSHAIRSIZE;
  7008.         }
  7009.         if( strcmp(input_type, arrowhead) == 0 ){
  7010.         free(input_type);
  7011.         return ARROWHEAD;
  7012.         }
  7013.         if( strcmp(input_type, crosshairs) == 0 ){
  7014.         free(input_type);
  7015.         return CROSSHAIRS;
  7016.         }
  7017.         if( strcmp(input_type, crosshair) == 0 ){
  7018.         free(input_type);
  7019.         return CROSSHAIR;
  7020.         }
  7021.         if( strcmp(input_type, onclick) == 0 ){
  7022.         free(input_type);
  7023.         return ONCLICK;
  7024.         }
  7025.         if( strcmp(input_type, drag) == 0 ){
  7026.         free(input_type);
  7027.         return DRAG;
  7028.         }
  7029.         if( strcmp(input_type, userdraw) == 0 ){
  7030.         free(input_type);
  7031.         return USERDRAW;
  7032.         }
  7033.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  7034.         free(input_type);
  7035.         return STYLE;
  7036.         }
  7037.         if( strcmp(input_type, fillcolor) == 0 ){
  7038.         free(input_type);
  7039.         return FILLCOLOR;
  7040.         }
  7041.         if( strcmp(input_type, strokecolor) == 0 ){
  7042.         free(input_type);
  7043.         return STROKECOLOR;
  7044.         }
  7045.         if( strcmp(input_type, filled) == 0  ){
  7046.         free(input_type);
  7047.         return FILLED;
  7048.         }
  7049.         if( strcmp(input_type, http) == 0 ){
  7050.         free(input_type);
  7051.         return HTTP;
  7052.         }
  7053.         if( strcmp(input_type, rays) == 0 ){
  7054.         free(input_type);
  7055.         return RAYS;
  7056.         }
  7057.         if( strcmp(input_type, lattice) == 0 ){
  7058.         free(input_type);
  7059.         return LATTICE;
  7060.         }
  7061.         if( strcmp(input_type, bgimage) == 0 ){
  7062.         free(input_type);
  7063.         return BGIMAGE;
  7064.         }
  7065.         if( strcmp(input_type, bgcolor) == 0 ){
  7066.         free(input_type);
  7067.         return BGCOLOR;
  7068.         }
  7069.         if( strcmp(input_type, backgroundimage) == 0 ){
  7070.         free(input_type);
  7071.         return BGIMAGE;
  7072.         }
  7073.         if( strcmp(input_type, text) == 0 ){
  7074.         free(input_type);
  7075.         return FLY_TEXT;
  7076.         }
  7077.         if( strcmp(input_type, textup) == 0 ){
  7078.         free(input_type);
  7079.         return FLY_TEXTUP;
  7080.         }
  7081.         if( strcmp(input_type, mouse) == 0 ){
  7082.         free(input_type);
  7083.         return MOUSE;
  7084.         }
  7085.         if( strcmp(input_type, mousex) == 0 ){
  7086.         free(input_type);
  7087.         return MOUSEX;
  7088.         }
  7089.         if( strcmp(input_type, mousey) == 0 ){
  7090.         free(input_type);
  7091.         return MOUSEY;
  7092.         }
  7093.         if( strcmp(input_type, mouse_degree) == 0 ){
  7094.         free(input_type);
  7095.         return MOUSE_DEGREE;
  7096.         }
  7097.         if( strcmp(input_type, mouse_display) == 0 ){
  7098.         free(input_type);
  7099.         return MOUSE_DISPLAY;
  7100.         }
  7101.         if( strcmp(input_type, mouseprecision) == 0 ){
  7102.         free(input_type);
  7103.         return MOUSE_PRECISION;
  7104.         }
  7105.         if( strcmp(input_type, precision) == 0 ){
  7106.         free(input_type);
  7107.         return MOUSE_PRECISION;
  7108.         }
  7109.         if( strcmp(input_type, curve) == 0 ){
  7110.         free(input_type);
  7111.         return CURVE;
  7112.         }
  7113.         if( strcmp(input_type, dcurve) == 0 ){
  7114.         use_dashed = TRUE;
  7115.         free(input_type);
  7116.         return CURVE;
  7117.         }
  7118.         if( strcmp(input_type, plot) == 0 ){
  7119.         free(input_type);
  7120.         return CURVE;
  7121.         }
  7122.         if( strcmp(input_type, dplot) == 0 ){
  7123.         use_dashed = TRUE;
  7124.         free(input_type);
  7125.         return CURVE;
  7126.         }
  7127.         if( strcmp(input_type, levelcurve) == 0 ){
  7128.         free(input_type);
  7129.         return LEVELCURVE;
  7130.         }
  7131.         if( strcmp(input_type, plotsteps) == 0 ){
  7132.         free(input_type);
  7133.         return PLOTSTEPS;
  7134.         }
  7135.         if( strcmp(input_type, plotstep) == 0 ){
  7136.         free(input_type);
  7137.         return PLOTSTEPS;
  7138.         }
  7139.         if( strcmp(input_type, tsteps) == 0 ){
  7140.         free(input_type);
  7141.         return PLOTSTEPS;
  7142.         }
  7143.         if( strcmp(input_type, fontsize) == 0 ){
  7144.         free(input_type);
  7145.         return FONTSIZE;
  7146.         }
  7147.         if( strcmp(input_type, fontcolor) == 0 ){
  7148.         free(input_type);
  7149.         return FONTCOLOR;
  7150.         }
  7151.         if( strcmp(input_type, arrow) == 0 ){
  7152.         free(input_type);
  7153.         return ARROW;
  7154.         }
  7155.         if( strcmp(input_type, arrow2) == 0 ){
  7156.         free(input_type);
  7157.         return ARROW2;
  7158.         }
  7159.         if( strcmp(input_type, darrow) == 0 ){
  7160.         free(input_type);
  7161.         use_dashed = TRUE;
  7162.         return ARROW;
  7163.         }
  7164.         if( strcmp(input_type, darrow2) == 0 ){
  7165.         free(input_type);
  7166.         use_dashed = TRUE;
  7167.         return ARROW2;
  7168.         }
  7169.         if( strcmp(input_type, zoom) == 0 ){
  7170.         free(input_type);
  7171.         return ZOOM;
  7172.         }
  7173.         if( strcmp(input_type, triangle) == 0 ){
  7174.         free(input_type);
  7175.         return TRIANGLE;
  7176.         }
  7177.         if( strcmp(input_type, ftriangle) == 0 ){
  7178.         free(input_type);
  7179.         use_filled = TRUE;
  7180.         return TRIANGLE;
  7181.         }
  7182.         if( strcmp(input_type, input) == 0 ){
  7183.         free(input_type);
  7184.         return INPUT;
  7185.         }
  7186.         if( strcmp(input_type, inputstyle) == 0 ){
  7187.         free(input_type);
  7188.         return INPUTSTYLE;
  7189.         }
  7190.         if( strcmp(input_type, textarea) == 0 ){
  7191.         free(input_type);
  7192.         return TEXTAREA;
  7193.         }
  7194.         if( strcmp(input_type, mathml) == 0 ){
  7195.         free(input_type);
  7196.         return MATHML;
  7197.         }
  7198.         if( strcmp(input_type, html) == 0 ){
  7199.         free(input_type);
  7200.         return MATHML;
  7201.         }
  7202.         if( strcmp(input_type, fontfamily) == 0 ){
  7203.         free(input_type);
  7204.         return FONTFAMILY;
  7205.         }
  7206.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  7207.         free(input_type);
  7208.         return POLYLINE;
  7209.         }
  7210.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  7211.         free(input_type);
  7212.         return RECT;
  7213.         }
  7214.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  7215.         free(input_type);
  7216.         return ROUNDRECT;
  7217.         }
  7218.         if( strcmp(input_type, froundrect) == 0 ){
  7219.         free(input_type);
  7220.         use_filled = TRUE;
  7221.         return ROUNDRECT;
  7222.         }
  7223.         if( strcmp(input_type, square) == 0 ){
  7224.         free(input_type);
  7225.         return SQUARE;
  7226.         }
  7227.         if( strcmp(input_type, fsquare) == 0 ){
  7228.         free(input_type);
  7229.         use_filled = TRUE;
  7230.         return SQUARE;
  7231.         }
  7232.         if( strcmp(input_type, dline) == 0 ){
  7233.         use_dashed = TRUE;
  7234.         free(input_type);
  7235.         return LINE;
  7236.         }
  7237.         if( strcmp(input_type, dvline) == 0 ){
  7238.         use_dashed = TRUE;
  7239.         free(input_type);
  7240.         return VLINE;
  7241.         }
  7242.         if( strcmp(input_type, dhline) == 0 ){
  7243.         use_dashed = TRUE;
  7244.         free(input_type);
  7245.         return HLINE;
  7246.         }
  7247.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  7248.         use_filled = TRUE;
  7249.         free(input_type);
  7250.         return RECT;
  7251.         }
  7252.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  7253.         use_filled = TRUE;
  7254.         free(input_type);
  7255.         return CIRCLE;
  7256.         }
  7257.         if( strcmp(input_type, circle) == 0 ){
  7258.         free(input_type);
  7259.         return CIRCLE;
  7260.         }
  7261.         if( strcmp(input_type, point) == 0 ){
  7262.         free(input_type);
  7263.         return POINT;
  7264.         }
  7265.         if( strcmp(input_type, points) == 0 ){
  7266.         free(input_type);
  7267.         return POINTS;
  7268.         }
  7269.         if( strcmp(input_type, filledarc) == 0 ){
  7270.         use_filled = TRUE;
  7271.         free(input_type);
  7272.         return ARC;
  7273.         }
  7274.         if( strcmp(input_type, arc) == 0 ){
  7275.         free(input_type);
  7276.         return ARC;
  7277.         }
  7278.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  7279.         free(input_type);
  7280.         return POLY;
  7281.         }
  7282.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  7283.         use_filled = TRUE;
  7284.         free(input_type);
  7285.         return POLY;
  7286.         }
  7287.         if( strcmp(input_type, ellipse) == 0){
  7288.         free(input_type);
  7289.         return ELLIPSE;
  7290.         }
  7291.         if( strcmp(input_type, fill) == 0 ){
  7292.         free(input_type);
  7293.         return FLOODFILL;
  7294.         }
  7295.         if( strcmp(input_type, string) == 0 ){
  7296.         free(input_type);
  7297.         return STRING;
  7298.         }
  7299.         if( strcmp(input_type, stringup) == 0 ){
  7300.         free(input_type);
  7301.         return STRINGUP;
  7302.         }
  7303.         if( strcmp(input_type, opacity) == 0 ){
  7304.         free(input_type);
  7305.         return OPACITY;
  7306.         }
  7307.         if( strcmp(input_type, comment) == 0){
  7308.         free(input_type);
  7309.         return COMMENT;
  7310.         }
  7311.         if( strcmp(input_type, end) == 0){
  7312.         free(input_type);
  7313.         return END;
  7314.         }
  7315.         if( strcmp(input_type, fellipse) == 0){
  7316.         free(input_type);
  7317.         use_filled = TRUE;
  7318.         return ELLIPSE;
  7319.         }
  7320.         if( strcmp(input_type, blink) == 0 ){
  7321.         free(input_type);
  7322.         return BLINK;
  7323.         }
  7324.         if( strcmp(input_type, clearbutton) == 0){
  7325.         free(input_type);
  7326.         return CLEARBUTTON;
  7327.         }
  7328.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  7329.         free(input_type);
  7330.         return TRANSLATION;
  7331.         }
  7332.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  7333.         free(input_type);
  7334.         return KILLTRANSLATION;
  7335.         }
  7336.         if( strcmp(input_type, rotate) == 0){
  7337.         free(input_type);
  7338.         return ROTATE;
  7339.         }
  7340.         if( strcmp(input_type, affine) == 0){
  7341.         free(input_type);
  7342.         return AFFINE;
  7343.         }
  7344.         if( strcmp(input_type, killaffine) == 0){
  7345.         free(input_type);
  7346.         return KILLAFFINE;
  7347.         }
  7348.         if( strcmp(input_type, audio) == 0 ){
  7349.         free(input_type);
  7350.         return AUDIO;
  7351.         }
  7352.         if( strcmp(input_type, audioobject) == 0 ){
  7353.         free(input_type);
  7354.         return AUDIOOBJECT;
  7355.         }
  7356.         if( strcmp(input_type, slider) == 0 ){
  7357.         free(input_type);
  7358.         return SLIDER;
  7359.         }
  7360.         if( strcmp(input_type, killslider) == 0 ){
  7361.         free(input_type);
  7362.         return KILLSLIDER;
  7363.         }
  7364.         if( strcmp(input_type, copy) == 0 ){
  7365.         free(input_type);
  7366.         return COPY;
  7367.         }
  7368.         if( strcmp(input_type, copyresized) == 0 ){
  7369.         free(input_type);
  7370.         return COPYRESIZED;
  7371.         }
  7372.         if( strcmp(input_type, patternfill) == 0 ){
  7373.         free(input_type);
  7374.         return PATTERNFILL;
  7375.         }
  7376.         if( strcmp(input_type, hatchfill) == 0 ){
  7377.         free(input_type);
  7378.         return HATCHFILL;
  7379.         }
  7380.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  7381.         free(input_type);
  7382.         return DIAMONDFILL;
  7383.         }
  7384.         if( strcmp(input_type, dotfill) == 0 ){
  7385.         free(input_type);
  7386.         return DOTFILL;
  7387.         }
  7388.         if( strcmp(input_type, gridfill) == 0 ){
  7389.         free(input_type);
  7390.         return GRIDFILL;
  7391.         }
  7392.         if( strcmp(input_type, imagefill) == 0 ){
  7393.         free(input_type);
  7394.         return IMAGEFILL;
  7395.         }
  7396.         if( strcmp(input_type, clicktile_colors) == 0 ){
  7397.         free(input_type);
  7398.         return CLICKTILE_COLORS;
  7399.         }
  7400.         if( strcmp(input_type, clicktile) == 0 ){
  7401.         free(input_type);
  7402.         return CLICKTILE;
  7403.         }
  7404.         if( strcmp(input_type, xlogscale) == 0 ){
  7405.         free(input_type);
  7406.         return XLOGSCALE;
  7407.         }
  7408.         if( strcmp(input_type, ylogscale) == 0 ){
  7409.         free(input_type);
  7410.         return YLOGSCALE;
  7411.         }
  7412.         if( strcmp(input_type, xylogscale) == 0 ){
  7413.         free(input_type);
  7414.         return XYLOGSCALE;
  7415.         }
  7416.         if( strcmp(input_type, ylogscale) == 0 ){
  7417.         free(input_type);
  7418.         return YLOGSCALE;
  7419.         }
  7420.         if( strcmp(input_type, xlogbase) == 0 ){
  7421.         free(input_type);
  7422.         return XLOGBASE;
  7423.         }
  7424.         if( strcmp(input_type, ylogbase) == 0 ){
  7425.         free(input_type);
  7426.         return YLOGBASE;
  7427.         }
  7428.         if( strcmp(input_type, intooltip) == 0 ){
  7429.         free(input_type);
  7430.         return INTOOLTIP;
  7431.         }
  7432.         if( strcmp(input_type,video) == 0 ){
  7433.         free(input_type);
  7434.         return VIDEO;
  7435.         }
  7436.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  7437.         free(input_type);
  7438.         return FLOODFILL;
  7439.         }
  7440.         if( strcmp(input_type,filltoborder) == 0 ){
  7441.         free(input_type);
  7442.         return FILLTOBORDER;
  7443.         }
  7444.         if( strcmp(input_type,clickfill) == 0 ){
  7445.         free(input_type);
  7446.         return CLICKFILL;
  7447.         }
  7448.         if( strcmp(input_type, replyformat) == 0 ){
  7449.         free(input_type);
  7450.         return REPLYFORMAT;
  7451.         }
  7452.         if( strcmp(input_type, pixelsize) == 0 ){
  7453.         free(input_type);
  7454.         return PIXELSIZE;
  7455.         }
  7456.         if( strcmp(input_type, setpixel) == 0 ){
  7457.         free(input_type);
  7458.         return SETPIXEL;
  7459.         }
  7460.         if( strcmp(input_type, pixels) == 0 ){
  7461.         free(input_type);
  7462.         return PIXELS;
  7463.         }
  7464.         if( strcmp(input_type, clickfillmarge) == 0 ){
  7465.         free(input_type);
  7466.         return CLICKFILLMARGE;
  7467.         }
  7468.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  7469.         free(input_type);
  7470.         return X_AXIS_STRINGS;
  7471.         }
  7472.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  7473.         free(input_type);
  7474.         return Y_AXIS_STRINGS;
  7475.         }
  7476.         if( strcmp(input_type, piechart) == 0  ){
  7477.         free(input_type);
  7478.         return PIECHART;
  7479.         }
  7480.         if( strcmp(input_type, barchart) == 0  ){
  7481.         free(input_type);
  7482.         return BARCHART;
  7483.         }
  7484.         if( strcmp(input_type, linegraph) == 0  ){
  7485.         free(input_type);
  7486.         return LINEGRAPH;
  7487.         }
  7488.         if( strcmp(input_type, clock) == 0  ){
  7489.         free(input_type);
  7490.         return CLOCK;
  7491.         }
  7492.         if( strcmp(input_type, legend) == 0  ){
  7493.         free(input_type);
  7494.         return LEGEND;
  7495.         }
  7496.         if( strcmp(input_type, legendcolors) == 0  ){
  7497.         free(input_type);
  7498.         return LEGENDCOLORS;
  7499.         }
  7500.         if( strcmp(input_type, xlabel) == 0  ){
  7501.         free(input_type);
  7502.         return XLABEL;
  7503.         }
  7504.         if( strcmp(input_type, ylabel) == 0  ){
  7505.         free(input_type);
  7506.         return YLABEL;
  7507.         }
  7508.         if( strcmp(input_type, animate) == 0  ){
  7509.         free(input_type);
  7510.         return ANIMATE;
  7511.         }
  7512.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  7513.         if( strcmp(input_type, transparent) == 0 ){
  7514.         free(input_type);
  7515.         return TRANSPARENT;
  7516.         }
  7517.         if( strcmp(input_type, status) == 0 || strcmp(input_type, nostatus) == 0 ){
  7518.         free(input_type);
  7519.         return STATUS;
  7520.         }
  7521.         if( strcmp(input_type, snaptogrid) == 0 ){
  7522.         free(input_type);
  7523.         return SNAPTOGRID;
  7524.         }
  7525.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  7526.         free(input_type);
  7527.         return XSNAPTOGRID;
  7528.         }
  7529.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  7530.         free(input_type);
  7531.         return YSNAPTOGRID;
  7532.         }
  7533.         if( strcmp(input_type, userinput_xy) == 0 ){
  7534.         free(input_type);
  7535.         return USERINPUT_XY;
  7536.         }
  7537.         if( strcmp(input_type, userinput_function) == 0 ){
  7538.         free(input_type);
  7539.         return USERINPUT_FUNCTION;
  7540.         }
  7541.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  7542.         free(input_type);
  7543.         return USERTEXTAREA_XY;
  7544.         }
  7545.         if( strcmp(input_type, userinput) == 0 ){
  7546.         free(input_type);
  7547.         return USERINPUT;
  7548.         }
  7549.         if( strcmp(input_type, sgraph) == 0 ){
  7550.         free(input_type);
  7551.         return SGRAPH;
  7552.         }
  7553.         if( strcmp(input_type, jsmath) == 0 ){
  7554.         free(input_type);
  7555.         return JSMATH;
  7556.         }
  7557.         if( strcmp(input_type, trace_jscurve) == 0 ){
  7558.         free(input_type);
  7559.         return TRACE_JSCURVE;
  7560.         }
  7561.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  7562.         free(input_type);
  7563.         return JSCURVE;
  7564.         }
  7565.         if( strcmp(input_type, centerstring) == 0 || strcmp(input_type, title) == 0 ){
  7566.         free(input_type);
  7567.         return CENTERSTRING;
  7568.         }
  7569.         if( strcmp(input_type, setlimits) == 0 ){
  7570.         free(input_type);
  7571.         return SETLIMITS;
  7572.         }
  7573.         if( strcmp(input_type, xunit) == 0 ){
  7574.         free(input_type);
  7575.         return XUNIT;
  7576.         }
  7577.         if( strcmp(input_type, yunit) == 0 ){
  7578.         free(input_type);
  7579.         return YUNIT;
  7580.         }
  7581.         if( strcmp(input_type, angle) == 0 ){
  7582.         free(input_type);
  7583.         return ANGLE;
  7584.         }
  7585.         if( strcmp(input_type, halfline) == 0 || strcmp(input_type, demiline) == 0  ){
  7586.         free(input_type);
  7587.         return HALFLINE;
  7588.         }
  7589.         if( strcmp(input_type, functionlabel) == 0 ){
  7590.         free(input_type);
  7591.         return FUNCTION_LABEL;
  7592.         }
  7593.         free(input_type);
  7594.         ungetc(c,infile);
  7595.         return 0;
  7596. }
  7597.  
  7598.