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  1. /*
  2. 27/7/2013 version 0.01
  3. "Inspired" by FLY program: http://martin.gleeson.com/fly
  4. *********************************************************************************
  5. * J.M. Evers 7/2013                                                             *
  6. * This is all just amateur scriblings... So no copyrights.                      *
  7. * This source code file, and compiled objects derived from it,                  *
  8. * can be used and distributed without restriction, including for commercial use *
  9. * No warrenty whatsoever                                                        *
  10. *********************************************************************************
  11. */
  12. #include <stdio.h>
  13. #include <stdlib.h>
  14. #include <errno.h>
  15. #include <string.h>
  16. #include <unistd.h>
  17. #include <time.h> /* use for random id's */
  18. #include <math.h>
  19. /*
  20. #include <ctype.h>
  21. 11/2013
  22. removed: FreeBSD 9.0 / 9.1 C-lib bug...in chroot it will result in: Undefined symbol "_ThreadRuneLocale" implemented own versions of tolower() / toupper()
  23. Clang is fine (FreeBSD 10.0)
  24. */
  25.  
  26. /*
  27. in case svgdraw is in ~/src/Misc/svgdraw
  28. #include "../svgdraw/include/matheval.h"
  29. */
  30. #include "include/matheval.h"
  31. #include <assert.h>
  32. #include "canvasdraw.h"
  33. #include<sys/stat.h>
  34.  
  35. /* needed for gettimeofday */
  36. #include <sys/time.h>
  37. #include "canvasmacro.c"
  38. /******************************************************************************
  39. **  Internal Functions
  40. ******************************************************************************/
  41. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  42. void    sync_input(FILE *infile);/* proceed with inputfile */
  43. void    canvas_error(char *msg);
  44. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  45. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  46. int     get_token(FILE *infile); /* read next char until EOL*/
  47. int     x2px(double x);
  48. int     y2px(double y);
  49. double  px2x(int x);
  50. double  px2y(int y);
  51. double  get_real(FILE *infile,int last); /* read a values; calculation and symbols allowed */
  52. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  53. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  54. char    *get_string(FILE *infile,int last); /* get the string at theend of a command */
  55. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  56. char    *convert_hex2rgb(char *hexcolor);
  57. void    add_read_canvas(int reply_format);
  58. void    make_js_include(int canvas_root_id);
  59. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  60. FILE    *js_include_file;
  61. FILE    *get_file(int *line_number, char **filename);
  62. FILE    *infile;    /* will be stdin */
  63. /******************************************************************************
  64. ** global
  65. ******************************************************************************/
  66. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  67. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  68. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  69. int xsize = 320;
  70. int ysize = 320;
  71. double xmin = 0.0;
  72. double xmax = 320.0;
  73. double ymin = 0.0;
  74. double ymax = 320.0;
  75. double tmax = 2;
  76. double tmin = -2;
  77. /* flag to indicate parsing of line status */
  78. int done = FALSE;
  79. int type; /* eg command number */
  80. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  81. int use_affine = FALSE;
  82. int use_rotate = FALSE;
  83. int use_translate = FALSE;
  84. int use_filled = FALSE;
  85. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  86. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  87.  
  88. /******************************************************************************
  89. ** Main Program
  90. ******************************************************************************/
  91. int main(int argc, char *argv[]){
  92.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  93.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  94.     infile = stdin;/* read flyscript via stdin */
  95.     int i,c;
  96.     double double_data[MAX_INT+1];
  97.     int int_data[MAX_INT+1];
  98.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  99.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  100.     int use_axis = FALSE;
  101.     int use_axis_numbering = FALSE;
  102.     int line_width = 1;
  103.     int decimals = 2;
  104.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  105.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  106.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  107.     int use_tooltip = FALSE;
  108.     char *tooltip_text = "Click here";
  109.     char *temp = ""; /* */
  110.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  111.     char *stroke_color = "255,0,0";
  112.     char *fill_color = "0,255,0";
  113.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  114.     char *font_color = "#00000";
  115.     char *draw_type = "points";
  116.     char *fly_font = "normal";
  117.     char *input_style = "";
  118.     char *flytext = "";
  119.     char *affine_matrix = "[1,0,0,1,0,0]";
  120.     int pixelsize = 1;
  121.     int reply_format = 0;
  122.     int input_cnt = 0;
  123.     int ext_img_cnt = 0;
  124.     int font_size = 12;
  125.     int dashtype[2] = { 2 , 2 };
  126.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  127.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  128.     int arrow_head = 8; /* size in px*/
  129.     int crosshair_size = 10; /* size in px*/
  130.     int plot_steps = 150;
  131.     int found_size_command = 0;
  132.     int click_cnt = 1;
  133.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  134.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  135.     int use_mouse_coordinates = FALSE;
  136.     double angle = 0.0;
  137.     int translate_x = 0;
  138.     int translate_y = 0;
  139.     int clickfillmarge = 20;
  140.     int animation_type = 9; /* == object type curve in drag library */
  141.     int use_input_xy = 0;
  142.     size_t string_length = 0;
  143.     double stroke_opacity = 0.8;
  144.     double fill_opacity = 0.8;
  145.     char *URL = "http://localhost/images";
  146.     memset(buffer,'\0',MAX_BUFFER);
  147.     void *tmp_buffer = "";
  148.    
  149.     /* default writing a unzipped js-include file into wims getfile directory */
  150.     char *w_wims_session = getenv("w_wims_session");
  151.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  152.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  153.     }
  154.     int L0=strlen(w_wims_session) + 21;
  155.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  156.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  157.     mode_t process_mask = umask(0); /* check if file exists */
  158.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  159.     if( result == 0 || errno == EEXIST ){
  160.      umask(process_mask); /* be sure to set correct permission */
  161.      char *w_session = getenv("w_session");
  162.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  163.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  164.      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 */   
  165.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  166.     /* now write file into getfile dir*/
  167.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  168.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  169.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  170.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  171.     js_include_file = fopen(location,"w");/* open the file location for writing */
  172.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  173.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  174.  
  175. /* ----------------------------------------------------- */
  176. /* while more lines to process */
  177.  
  178.     while(!finished){
  179.         if(line_number>1 && found_size_command == FALSE){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  180.         type = get_token(infile);
  181.         done = FALSE;
  182.         /*
  183.         @canvasdraw
  184.         @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...)
  185.         @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> 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();<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.<br />example:<br />size 200,200;xrange -5,5;yrange -5,5;hline 0,0,black;vline 0,0,black<br />plot red,sin(x)<br />drag xy<br />html 0,0,5,-5, &amp;euro; <br />lines green,2,0,2,-2,-2,2,-2,0;rectangle 1,1,4,4,purple;frectangle -1,-1,-4,-4,yellow</li></ul>
  186.         */
  187.         switch(type){
  188.         case END:
  189.         finished = 1;
  190.         done = TRUE;
  191.         break;
  192.         case 0:
  193.             sync_input(infile);
  194.             break;
  195.         case COMMENT:
  196.             sync_input(infile);
  197.             break;
  198.         case EMPTY:
  199.             sync_input(infile);
  200.             break;
  201.         case SIZE:
  202.             /*
  203.             @size width,height
  204.             @set canvas size in pixels
  205.             @mandatory first command
  206.             @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)
  207.             */
  208.             found_size_command = TRUE;
  209.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  210.             ysize = (int)(abs(round(get_real(infile,1))));
  211.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  212.             xmin = 0;xmax = xsize;
  213.             ymin = 0;ymax = ysize;
  214.  
  215. /*
  216.  The sequence in which stuff is finally printed is important !!
  217.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  218. */
  219. fprintf(stdout,"\n<script type=\"text/javascript\">var wims_status = \"$status\";</script>\n<!-- canvasdraw div and tooltip placeholder, if needed -->\n<div tabindex=\"0\" id=\"canvas_div%d\" style=\"position:relative;width:%dpx;height:%dpx;\" ></div><div id=\"tooltip_placeholder_div%d\" style=\"display:block\"><span id=\"tooltip_placeholder%d\" style=\"display:none\"></span></div>\n",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id);
  220. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n");
  221. fprintf(stdout,"<!-- include actual object code via include file -->\n<script type=\"text/javascript\" src=\"%s\"></script>\n",getfile_cmd);
  222. fprintf(js_include_file,"var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  223. var xsize = %d;\
  224. var ysize = %d;\
  225. var canvas_div = document.getElementById(\"canvas_div%d\");\
  226. 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;};\
  227. 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;};\
  228. function x2px(x){if(use_xlogscale == 0 ){return 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);};};\
  229. function px2x(px){if(use_xlogscale == 0 ){return (Math.round((px*(xmax - xmin)/xsize + xmin)*precision))/precision;}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);};};\
  230. function px2y(py){if(use_ylogscale == 0 ){return (Math.round((ymax -py*(ymax - ymin)/ysize)*precision))/precision;}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);};};\
  231. function y2px(y){if(use_ylogscale == 0){return -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);};};\
  232. function scale_x_radius(rx){return parseInt(x2px(rx) - x2px(0));};\
  233. function scale_y_radius(ry){return parseInt(y2px(ry) - y2px(0));};\
  234. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  235. 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) ));};\
  236. 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;};\
  237. var xlogbase = 10;\
  238. var ylogbase = 10;\
  239. var use_xlogscale = 0;\
  240. var use_ylogscale = 0;\
  241. var x_strings = null;\
  242. var y_strings = null;\
  243. var use_pan_and_zoom = 0;\
  244. var x_use_snap_to_grid = 0;\
  245. var y_use_snap_to_grid = 0;\
  246. var xstart = 0;\
  247. var ystart = 0",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  248. /* default add the drag code : nearly always used ...*/
  249. add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  250.             break;
  251.         case XRANGE:
  252.         /*
  253.         @ xrange xmin,xmax
  254.         @ if not given: 0,xsize (eg in pixels)
  255.         */
  256.             for(i = 0 ; i<2; i++){
  257.                 switch(i){
  258.                     case 0: xmin = get_real(infile,0);break;
  259.                     case 1: xmax = get_real(infile,1);break;
  260.                     default: break;
  261.                 }
  262.             }
  263.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  264.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  265.             break;
  266.         case YRANGE:
  267.         /*
  268.         @ yrange ymin,ymax
  269.         @ if not given 0,ysize (eg in pixels)
  270.         */
  271.             for(i = 0 ; i<2; i++){
  272.                 switch(i){
  273.                     case 0: ymin = get_real(infile,0);break;
  274.                     case 1: ymax = get_real(infile,1);break;
  275.                     default: break;
  276.                 }
  277.             }
  278.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  279.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  280.             break;
  281.         case TRANGE:
  282.         /*
  283.         @ trange tmin,tmax
  284.         @ default -2,2
  285.         */
  286.             use_parametric = TRUE;
  287.             for(i = 0 ; i<2; i++){
  288.                 switch(i){
  289.                     case 0: tmin = get_real(infile,0);break;
  290.                     case 1: tmax = get_real(infile,1);break;
  291.                     default: break;
  292.                 }
  293.             }
  294.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  295.             break;
  296.         case LINEWIDTH:
  297.         /*
  298.         @ linewidth int
  299.         @ default 1
  300.         */
  301.             line_width = (int) (get_real(infile,1));
  302.             break;
  303.         case ARROWHEAD:
  304.         /*
  305.         @ arrowhead int
  306.         @ default 8 (pixels)
  307.         */
  308.             arrow_head = (int) (get_real(infile,1));
  309.             break;
  310.         case CROSSHAIRSIZE:
  311.         /*
  312.         @ crosshairsize int
  313.         @ default 10 (px)
  314.         */
  315.             crosshair_size = (int) (get_real(infile,1));
  316.             break;
  317.         case CROSSHAIR:
  318.         /*
  319.         @ crosshair x,y,color
  320.         @ draw a single crosshair point at (x;y) in color 'color'
  321.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  322.         @ may be set draggable / onclick
  323.         */
  324.             for(i=0;i<3;i++){
  325.                 switch(i){
  326.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  327.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  328.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  329.                         decimals = find_number_of_digits(precision);
  330.                         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));\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);
  331.                         click_cnt++;reset();
  332.                         break;
  333.                     default:break;
  334.                 }
  335.             }
  336.             break;
  337.         case CROSSHAIRS:
  338.         /*
  339.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  340.         @ draw multiple crosshair points at given coordinates in color 'color'
  341.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  342.         @ may be set draggable / onclick individually (!)
  343.         */
  344.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  345.             fill_color = stroke_color;
  346.             i=0;
  347.             while( ! done ){     /* get next item until EOL*/
  348.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  349.                 if(i%2 == 0 ){
  350.                     double_data[i] = get_real(infile,0); /* x */
  351.                 }
  352.                 else
  353.                 {
  354.                     double_data[i] = get_real(infile,1); /* y */
  355.                 }
  356.                 i++;
  357.             }
  358.             decimals = find_number_of_digits(precision);
  359.             for(c=0 ; c < i-1 ; c = c+2){
  360.                 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));\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);
  361.                 click_cnt++;
  362.             }
  363.             reset();
  364.             break;
  365.         case POINT:
  366.         /*
  367.         @ point x,y,color
  368.         @ draw a single point at (x;y) in color 'color'
  369.         @ use command 'linewidth int'  to adust size
  370.         @ may be set draggable / onclick
  371.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  372.         */
  373.             for(i=0;i<3;i++){
  374.                 switch(i){
  375.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  376.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  377.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  378.                     decimals = find_number_of_digits(precision);
  379.                     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));\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);
  380.                     click_cnt++;break;
  381.                     default: break;
  382.                 }
  383.             }
  384.             reset();
  385.             break;
  386.         case POINTS:
  387.         /*
  388.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  389.         @ draw multiple points at given coordinates in color 'color'
  390.         @ use command 'linewidth int'  to adust size
  391.         @ may be set draggable / onclick individually (!)
  392.         */
  393.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  394.             fill_color = stroke_color;
  395.             i=0;
  396.             while( ! done ){     /* get next item until EOL*/
  397.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  398.                 if(i%2 == 0 ){
  399.                     double_data[i] = get_real(infile,0); /* x */
  400.                 }
  401.                 else
  402.                 {
  403.                     double_data[i] = get_real(infile,1); /* y */
  404.                 }
  405.                 i++;
  406.             }
  407.             decimals = find_number_of_digits(precision);           
  408.             for(c = 0 ; c < i-1 ; c = c+2){
  409.                 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));\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);
  410.                 click_cnt++;
  411.             }
  412.             reset();
  413.             break;
  414.         case SEGMENT:
  415.         /*
  416.         @ segment x1,y1,x2,y2,color
  417.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  418.         @ may be set draggable / onclick
  419.         */
  420.             for(i=0;i<5;i++) {
  421.                 switch(i){
  422.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  423.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  424.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  425.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  426.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  427.                         decimals = find_number_of_digits(precision);
  428.                         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));\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);
  429.                         click_cnt++;reset();
  430.                         break;
  431.                     default: break;
  432.                 }
  433.             }
  434.             break;
  435.         case LINE:
  436.         /*
  437.         @ line x1,y1,x2,y2,color
  438.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  439.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  440.         @ may be set draggable / onclick
  441.         */
  442.             for(i=0;i<5;i++){
  443.                 switch(i){
  444.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  445.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  446.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  447.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  448.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  449.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  450.                         double_data[1] = xmin;
  451.                         double_data[3] = ymax;
  452.                         double_data[0] = double_data[10];
  453.                         double_data[2] = double_data[10];
  454.                     }
  455.                     else
  456.                     {
  457.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  458.                             double_data[1] = double_data[11];
  459.                             double_data[3] = double_data[11];
  460.                             double_data[0] = ymin;
  461.                             double_data[2] = xmax;
  462.                         }
  463.                         else
  464.                         {
  465.                         /* m */
  466.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  467.                         /* q */
  468.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  469.                        
  470.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  471.                        
  472.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  473.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  474.                             double_data[0] = xmin;
  475.                             double_data[2] = xmax;
  476.                         }
  477.                     }
  478.                     decimals = find_number_of_digits(precision);
  479.                     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));\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);
  480.                     click_cnt++;reset();
  481.                     break;
  482.                 }
  483.             }
  484.             break;
  485.         case HLINE:
  486.         /*
  487.         @ hline x,y,color
  488.         @ draw a horizontal line through point (x:y) in color 'color'
  489.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  490.         @ may be set draggable / onclick
  491.         */
  492.             for(i=0;i<3;i++) {
  493.                 switch(i){
  494.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  495.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  496.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  497.                     double_data[3] = double_data[1];
  498.                     decimals = find_number_of_digits(precision);
  499.                     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));\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);
  500.                     click_cnt++;reset();
  501.                     break;
  502.                 }
  503.             }
  504.             break;
  505.         case VLINE:
  506.         /*
  507.         @ vline x,y,color
  508.         @ draw a vertical line through point (x:y) in color 'color'
  509.         @ may be set draggable / onclick
  510.         */
  511.             for(i=0;i<3;i++) {
  512.                 switch(i){
  513.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  514.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  515.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  516.                         double_data[2] = double_data[0];
  517.                         decimals = find_number_of_digits(precision);
  518.                         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));\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);
  519.                         click_cnt++;reset();
  520.                     break;
  521.                 }
  522.             }
  523.             break;
  524.         case SQUARE:
  525.         /*
  526.         @ square x,y,side,color
  527.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  528.         @ use command 'fsquare x,y,side,color' for a filled square
  529.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  530.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  531.         @ may be set draggable / onclick
  532.         */
  533.             for(i=0;i<5;i++){
  534.                 switch(i){
  535.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  536.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  537.                     case 2:double_data[2] = get_real(infile,0);
  538.                            double_data[3] = double_data[2];
  539.                            break; /* x-values */
  540.                     case 3:stroke_color = get_color(infile,1);/* name or hex color */
  541.                         decimals = find_number_of_digits(precision);
  542.                         fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,1,[%.*f,%.*f],[%.*f,%.*f],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s));\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,fill_color,fill_opacity,use_filled,use_dashed,dashtype[0],dashtype[1],use_rotate,angle,flytext,font_size,font_family,use_affine,affine_matrix);
  543.                         click_cnt++;reset();
  544.                         break;
  545.                 }
  546.             }
  547.             break;
  548.         case ROUNDRECT:
  549.         /*
  550.         @ roundrect x1,y1,x2,y2,radius,color
  551.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  552.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  553.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  554.         @ may be set draggable / onclick
  555.         */
  556.             for(i=0;i<6;i++){
  557.                 switch(i){
  558.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  559.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  560.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  561.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  562.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  563.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  564.                         decimals = find_number_of_digits(precision);
  565.                         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));\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);
  566.                         click_cnt++;reset();
  567.                     break;
  568.                 }
  569.             }
  570.             break;
  571.         case RECT:
  572.         /*
  573.         @ rect x1,y1,x2,y2,color
  574.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  575.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  576.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  577.         @ may be set draggable / onclick
  578.         */
  579.             for(i=0;i<5;i++){
  580.                 switch(i){
  581.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  582.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  583.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  584.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  585.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  586.                         decimals = find_number_of_digits(precision);
  587.                         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));\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);
  588.                         click_cnt++;reset();
  589.                         break;
  590.                 }
  591.             }
  592.             break;
  593.         case POLYLINE:
  594.         /*
  595.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  596.         @ may be set draggable / onclick
  597.         */
  598.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  599.             i=0;
  600.             c=0;
  601.             while( ! done ){     /* get next item until EOL*/
  602.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  603.                 for( c = 0 ; c < 2; c++){
  604.                     if(c == 0 ){
  605.                         double_data[i] = get_real(infile,0);
  606.                         i++;
  607.                     }
  608.                     else
  609.                     {
  610.                         double_data[i] = get_real(infile,1);
  611.                         i++;
  612.                     }
  613.                 }
  614.             }
  615.             /* draw path : not closed & not filled */
  616.             decimals = find_number_of_digits(precision);
  617.             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));\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);
  618.             click_cnt++;reset();
  619.             break;
  620.         case POLY:
  621.         /*
  622.         @ poly color,x1,y1,x2,y2...x_n,y_n
  623.         @ draw closed polygon
  624.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  625.         @ may be set draggable / onclick
  626.         */
  627.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  628.             i=0;
  629.             c=0;
  630.             while( ! done ){     /* get next item until EOL*/
  631.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  632.                 for( c = 0 ; c < 2; c++){
  633.                     if(c == 0 ){
  634.                         double_data[i] = get_real(infile,0);
  635.                         i++;
  636.                     }
  637.                     else
  638.                     {
  639.                         double_data[i] = get_real(infile,1);
  640.                         i++;
  641.                     }
  642.                 }
  643.             }
  644.             /* draw path :  closed & optional filled */
  645.                 decimals = find_number_of_digits(precision);
  646.                 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));\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);
  647.                 click_cnt++;reset();
  648.             break;
  649.         case ARC:
  650.         /*
  651.          @ arc xc,yc,width,height,start_angle,end_angle,color
  652.          @ can not be set "onclick" or "drag xy"
  653.          @ attention: width == height == radius in pixels)
  654.         */
  655.             for(i=0;i<7;i++){
  656.                 switch(i){
  657.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  658.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  659.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  660.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  661.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  662.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  663.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  664.                     /* in Shape library:
  665.                         x[0] = x[1] = xc
  666.                         y[0] = y[1] = yc
  667.                         w[0] = w[1] = radius = width = height  
  668.                         h[0] = start_angle ; h[1] = end_engle
  669.                     */
  670.                         decimals = find_number_of_digits(precision);
  671.                         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));\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);
  672.                         reset();
  673.                     break;
  674.                 }
  675.             }
  676.             break;
  677.         case ELLIPSE:
  678.         /*
  679.         @ ellipse xc,yc,radius_x,radius_y,color
  680.         @ a ellipse with center xc/yc in x/y-range
  681.         @ radius_x and radius_y are in pixels
  682.         @ may be set draggable / onclick
  683.         @ will shrink / expand on zoom out / zoom in
  684.         */
  685.             for(i=0;i<5;i++){
  686.                 switch(i){
  687.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  688.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  689.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  690.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  691.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  692.                         decimals = find_number_of_digits(precision);
  693.                         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));\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);
  694.                         click_cnt++;reset();
  695.                     break;
  696.                 }
  697.             }
  698.             break;
  699.         case DASHTYPE:
  700.         /*
  701.         @ dashtype int ,int
  702.         @ When dashed is set, the objects will be drawn with this dashtyp
  703.         @ default value "dashtype 2,2"
  704.         */
  705.             for(i=0;i<2;i++){
  706.                 switch(i){
  707.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  708.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  709.                 }
  710.             }
  711.         break;
  712.         case CIRCLE:
  713.         /*
  714.         @ circle xc,yc,width (2*r in pixels),color
  715.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  716.         @ use command 'fillcolor color' to set the fillcolor
  717.         @ may be set draggable / onclick
  718.         @ will shrink / expand on zoom out / zoom in
  719.         */
  720.             for(i=0;i<4;i++){
  721.                 switch(i){
  722.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  723.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  724.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* radius in 'dx' xrange*/
  725.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  726.                         decimals = find_number_of_digits(precision);
  727.                         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));\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);
  728.                         click_cnt++;reset();
  729.                     break;
  730.                 }
  731.             }
  732.             break;
  733.         case RAYS:
  734.         /*
  735.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  736.          @ draw rays in color 'color' and center (xc:yc)
  737.          @ may be set draggable or onclick (every individual ray)
  738.         */
  739.             stroke_color=get_color(infile,0);
  740.             fill_color = stroke_color;
  741.             double_data[0] = get_real(infile,0);/* xc */
  742.             double_data[1] = get_real(infile,0);/* yc */
  743.             i=2;
  744.             while( ! done ){     /* get next item until EOL*/
  745.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  746.                 if(i%2 == 0 ){
  747.                     double_data[i] = get_real(infile,0); /* x */
  748.                 }
  749.                 else
  750.                 {
  751.                     double_data[i] = get_real(infile,1); /* y */
  752.                 }
  753.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  754.                 i++;
  755.             }
  756.            
  757.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  758.             decimals = find_number_of_digits(precision);           
  759.             for(c=2; c<i;c = c+2){
  760.                 click_cnt++;
  761.                 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));\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);
  762.             }
  763.             reset();
  764.             break;
  765.         case ARROW:
  766.         /*
  767.         @ arrow x1,y1,x2,y2,h,color
  768.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  769.         @ use command 'linewidth int' to adjust thickness of the arrow
  770.         @ may be set draggable / onclick
  771.         */
  772.             for(i=0;i<6;i++){
  773.                 switch(i){
  774.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  775.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  776.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  777.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  778.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  779.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  780.                         decimals = find_number_of_digits(precision);
  781.                         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));\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);
  782.                         click_cnt++;
  783.                         reset();
  784.                         break;
  785.                 }
  786.             }
  787.             break;
  788.         case ARROW2:
  789.         /*
  790.         @ arrow2 x1,y1,x2,y2,h,color
  791.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  792.         @ use command 'arrowhead int' to adjust the arrow head size
  793.         @ use command 'linewidth int' to adjust thickness of the arrow
  794.         @ may be set draggable / onclick
  795.         */
  796.             for(i=0;i<6;i++){
  797.                 switch(i){
  798.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  799.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  800.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  801.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  802.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  803.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  804.                         decimals = find_number_of_digits(precision);
  805.                         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));\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);
  806.                         click_cnt++;reset();
  807.                         break;
  808.                 }
  809.             }
  810.             break;
  811.         case PARALLEL:
  812.         /*
  813.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  814.          @ can not be set "onclick" or "drag xy"
  815.         */
  816.             for( i = 0;i < 8; i++ ){
  817.                 switch(i){
  818.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  819.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  820.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  821.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  822.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  823.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  824.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  825.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  826.                     decimals = find_number_of_digits(precision);
  827.                     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));\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);
  828.                     click_cnt++;reset();
  829.                     break;
  830.                     default: break;
  831.                 }
  832.             }
  833.             break;
  834.         case TRIANGLE:
  835.         /*
  836.          @triangle x1,y1,x2,y2,x3,y3,color
  837.          @may be set draggable / onclic
  838.         */
  839.             for(i=0;i<7;i++){
  840.                 switch(i){
  841.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  842.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  843.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  844.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  845.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  846.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  847.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  848.                         decimals = find_number_of_digits(precision);
  849.                         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));\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);
  850.                         click_cnt++;reset();
  851.                         break;
  852.                     default: break;
  853.                 }
  854.             }
  855.             break;
  856.         case LATTICE:
  857.         /*
  858.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  859.          @can not be set "onclick" or "drag xy"
  860.         */
  861.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  862.             for( i = 0; i<9; i++){
  863.                 switch(i){
  864.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  865.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  866.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  867.                     case 3: int_data[3] = (int) (get_real(infile,0));break; /* y1-values  -> y-pixels*/
  868.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  869.                     case 5: int_data[5] = (int) (get_real(infile,0));break; /* y2-values  -> y-pixels*/
  870.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  871.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  872.                     case 8: stroke_color=get_color(infile,1);
  873.                         decimals = find_number_of_digits(precision);
  874.                         string_length = snprintf(NULL,0,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d,[%d,%d]);",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_translate,translate_x,translate_y);
  875.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  876.                         snprintf(tmp_buffer,string_length,"draw_lattice(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",%.2f,\"%s\",%.2f,%d,%.2f,%d,[%d,%d]);",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_translate,translate_x,translate_y);
  877.                         add_to_buffer(tmp_buffer);
  878.                     break;
  879.                     default:break;
  880.                 }
  881.             }
  882.             reset();
  883.             break;
  884.         case SNAPTOGRID:
  885.         /*
  886.          @ snaptogrid
  887.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  888.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  889.          @ 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 />
  890.         */
  891.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;y_use_snap_to_grid = 1;var snap_x = 1;var snap_y = 1;function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};function snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\n");
  892.         break;
  893.         case XSNAPTOGRID:
  894.         /*
  895.          @ xsnaptogrid
  896.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  897.          @ in case of userdraw the drawn points will snap to xmajor grid
  898.          @ if xminor / yminor 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 />
  899.         */
  900.         fprintf(js_include_file,"\nx_use_snap_to_grid = 1;var snap_x = 1;if (typeof snap_y === 'undefined') { var snap_y = 1;};var snap_y = 1;function snap_to_x(x){return x2px(snap_x*(Math.round((px2x(x))/snap_x)));};\n");
  901.         break;
  902.         case YSNAPTOGRID:
  903.         /*
  904.          @ ysnaptogrid
  905.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  906.          @ in case of userdraw the drawn points will snap to ymajor grid
  907.          @ if xminor / 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 />
  908.         */
  909.         fprintf(js_include_file,"\ny_use_snap_to_grid = 1;if (typeof snap_x === 'undefined') { var snap_x = 1;};var snap_y = 1;\nfunction snap_to_y(y){return y2px(snap_y*(Math.round((px2y(y))/snap_y)));};\n");
  910.         break;
  911.         case USERTEXTAREA_XY:
  912.         /*
  913.         @ usertextarea_xy
  914.         @ keyword
  915.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  916.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  917.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  918.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  919.         @ user drawings will not zoom on zooming (or pan on panning)
  920.         */
  921.             if(use_tooltip == TRUE){canvas_error("usertextarea_xy can not be combined with intooltip command");}
  922.             if( use_input_xy == 1 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  923.             fprintf(js_include_file,"function safe_eval(exp){if(exp.indexOf('^') != -1){exp = exp.replace(/\\s*(.*)\\^\\s*(.*)/ig, \"pow($1, $2)\");};var reg = /(?:[a-z$_][a-z0-9$_]*)|(?:[;={}\\[\\]\"'!&<>^\\\\?:])/ig;var valid = true;exp = exp.replace(reg,function($0){if (Math.hasOwnProperty($0)){return \"Math.\"+$0;}else{valid = false;};});if (!valid){alert(\"hmmm \"+exp+\" ?\"); exp = null;}else{try { exp = eval(exp); } catch (e) {alert(\"Invalid arithmetic expression\"); exp = null;};};return exp;};");
  924.             use_input_xy = 2;
  925.             break;
  926.         case USERINPUT_XY:
  927.         /*
  928.         @ userinput_xy
  929.         @ keyword
  930.         @ to be used in combination with command "userdraw object_type,color"
  931.         @ 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)
  932.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  933.         @ 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.
  934.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  935.         @ user drawings will not zoom on zooming (or pan on panning)
  936.         */
  937.             if(use_tooltip == TRUE){canvas_error("userinput_xy can not be combined with intooltip command");}
  938.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  939.             fprintf(js_include_file,"function safe_eval(exp){if(exp.indexOf('^') != -1){exp = exp.replace(/\\s*(.*)\\^\\s*(.*)/ig, \"pow($1, $2)\");};var reg = /(?:[a-z$_][a-z0-9$_]*)|(?:[;={}\\[\\]\"'!&<>^\\\\?:])/ig;var valid = true;exp = exp.replace(reg,function($0){if (Math.hasOwnProperty($0)){return \"Math.\"+$0;}else{valid = false;};});if (!valid){alert(\"hmmm \"+exp+\" ?\"); exp = null;}else{try { exp = eval(exp); } catch (e) {alert(\"Invalid arithmetic expression\"); exp = null;};};return exp;};");
  940.             use_input_xy = 1;
  941.             break;
  942.         case USERDRAW:
  943.         /*
  944.         @ userdraw object_type,color
  945.         @ implemented object_type: <ul><li>point</li><li>points</li><li>crosshair</li><li>crosshairs</li><li>line</li><li>lines</li><li>segment</li><li>segments</li><li>polyline</li><li>circle</li><li>circles</li><li>arrow</li><li>arrows</li><li>triangle</li><li>polygon</li><li>poly[3-9]</li><li>rect</li><li>roundrect</li><li>rects</li><li>roundrects</li><li>freehandline</li><li>freehandlines</li><li>path</li><li>paths</li><li>text</li></ul>
  946.         @ note: mouselisteners are only active if "$status != done " (eg only drawing in an active/non-finished exercise) <br /> to overrule use command/keyword "status" (no arguments required)
  947.         @ 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
  948.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  949.         @ 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)
  950.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  951.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  952.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  953.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  954.         @ may be combined with keyword 'userinput_xy' or
  955.         @ 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.!
  956.         */
  957.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  958.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  959.             }
  960.             use_userdraw = TRUE;
  961.             fprintf(js_include_file,"<!-- begin userdraw mouse events -->\nvar userdraw_x = new Array();var userdraw_y = new Array();var 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]);
  962.             draw_type = get_string_argument(infile,0);
  963.             stroke_color = get_color(infile,1);
  964.             if( strcmp(draw_type,"point") == 0 ){
  965.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  966.                 if(reply_format < 1 ){reply_format = 8;}
  967.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  968.                 if(use_input_xy == 1){
  969.                     add_input_circle(js_include_file,1,1);
  970.                     add_input_xy(js_include_file,canvas_root_id);
  971.                 }
  972.                 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);
  973.             }
  974.             else
  975.             if( strcmp(draw_type,"points") == 0 ){
  976.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  977.                 if(reply_format < 1 ){reply_format = 8;}
  978.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  979.                 if(use_input_xy == 1){
  980.                     add_input_circle(js_include_file,1,2);
  981.                     add_input_xy(js_include_file,canvas_root_id);
  982.                 }
  983.                 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);
  984.             }
  985.             else
  986.             if( strcmp(draw_type,"segment") == 0 ){
  987.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  988.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  989.                 if(reply_format < 1){reply_format = 11;}
  990.                 if(use_input_xy == 1){
  991.                     add_input_segment(js_include_file,1);
  992.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  993.                 }
  994.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  995.             }
  996.             else
  997.             if( strcmp(draw_type,"polyline") == 0 ){
  998.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  999.                 if(reply_format < 1){reply_format = 23;}
  1000.                 if( use_input_xy == 1 ){
  1001.                     add_input_polyline(js_include_file);
  1002.                     add_input_xy(js_include_file,canvas_root_id);
  1003.                 }
  1004.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1005.             }
  1006.             else
  1007.             if( strcmp(draw_type,"segments") == 0 ){
  1008.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1009.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  1010.                 if(reply_format < 1){reply_format = 11;}
  1011.                 if(use_input_xy == 1){
  1012.                     add_input_segment(js_include_file,2);
  1013.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1014.                 }
  1015.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1016.             }
  1017.             else
  1018.             if( strcmp(draw_type,"circle") == 0 ){
  1019.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1020.                 if(reply_format < 1){reply_format = 10;}
  1021.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1022.                 if(use_input_xy == 1){
  1023.                     add_input_circle(js_include_file,2,1);
  1024.                     add_input_xyr(js_include_file,canvas_root_id);
  1025.                 }
  1026.                 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]);
  1027.             }
  1028.             else
  1029.             if( strcmp(draw_type,"circles") == 0 ){
  1030.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1031.                 if(reply_format < 1){reply_format = 10;}
  1032.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1033.                 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]);
  1034.                 if(use_input_xy == 1){
  1035.                     add_input_circle(js_include_file,2,2);
  1036.                     add_input_xyr(js_include_file,canvas_root_id);
  1037.                 }
  1038.             }
  1039.             else
  1040.             if(strcmp(draw_type,"crosshair") == 0 ){
  1041.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1042.                 if(reply_format < 1){reply_format = 8;}
  1043.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1044.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1045.                 if(use_input_xy == 1){
  1046.                     add_input_crosshair(js_include_file,1);
  1047.                     add_input_xy(js_include_file,canvas_root_id);
  1048.                 }
  1049.             }
  1050.             else
  1051.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1052.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1053.                 if(reply_format < 1){reply_format = 8;}
  1054.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1055.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1056.                 if(use_input_xy == 1){
  1057.                     add_input_crosshair(js_include_file,2);
  1058.                     add_input_xy(js_include_file,canvas_root_id);
  1059.                 }
  1060.             }
  1061.             else
  1062.             if(strcmp(draw_type,"freehandline") == 0 ){
  1063.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1064.                 if(reply_format < 1){reply_format = 6;}
  1065.                 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]);  
  1066.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1067.             }
  1068.             else
  1069.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1070.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1071.                 if(reply_format < 1){reply_format = 6;}
  1072.                 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]);  
  1073.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1074.             }
  1075.             else
  1076.             if(strcmp(draw_type,"path") == 0 ){
  1077.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1078.                 if(reply_format < 1){reply_format = 6;}
  1079.                 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]);  
  1080.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1081.             }
  1082.             else
  1083.             if(strcmp(draw_type,"paths") == 0 ){
  1084.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1085.                 if(reply_format < 1){reply_format = 6;}
  1086.                 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]);  
  1087.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1088.             }
  1089.             else
  1090.             if(strcmp(draw_type,"arrows") == 0 ){
  1091.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1092.                 if(reply_format < 1){reply_format = 11;}
  1093.                 add_js_arrows(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1094.                 if(use_input_xy == 1){
  1095.                     add_input_arrow(js_include_file,2);
  1096.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1097.                 }
  1098.             }
  1099.             else
  1100.             if(strcmp(draw_type,"arrow") == 0 ){
  1101.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1102.                 if(reply_format < 1){reply_format = 11;}
  1103.                 add_js_arrows(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1104.                 if(use_input_xy == 1){
  1105.                     add_input_arrow(js_include_file,1);
  1106.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1107.                 }
  1108.             }
  1109.             else
  1110.             if(strcmp(draw_type,"polygon") == 0){
  1111.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1112.                 if(reply_format < 1){reply_format = 2;}
  1113.                 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]);
  1114.                 if( use_input_xy == 2 ){
  1115.                   add_textarea_polygon(js_include_file);
  1116.                   add_textarea_xy(js_include_file,canvas_root_id);
  1117.                 }
  1118.             }
  1119.             else
  1120.             if(strncmp(draw_type,"poly",4) == 0){
  1121.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1122.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1123.                 if(reply_format < 1){reply_format = 2;}
  1124.                 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]);
  1125.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1126.             }
  1127.             else
  1128.             if(strcmp(draw_type,"triangle") == 0){
  1129.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1130.                 if(reply_format < 1){reply_format = 2;}
  1131.                 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]);
  1132.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1133.             }
  1134.             else
  1135.             if( strcmp(draw_type,"line") == 0 ){
  1136.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1137.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1138.                 if(reply_format < 1){reply_format = 11;}
  1139.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1140.                 if( use_input_xy == 1 ){
  1141.                     add_input_line(js_include_file,1);
  1142.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1143.                 }
  1144.             }
  1145.             else
  1146.             if( strcmp(draw_type,"lines") == 0 ){
  1147.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1148.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1149.                 if(reply_format < 1){reply_format = 11;}
  1150.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1151.                 if( use_input_xy == 1 ){
  1152.                     add_input_line(js_include_file,2);
  1153.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1154.                 }
  1155.             }
  1156.             else
  1157.             if( strcmp(draw_type,"rects") == 0){
  1158.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1159.                 if(reply_format < 1){reply_format = 2;}
  1160.                 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]);
  1161.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1162.             }
  1163.             else
  1164.             if( strcmp(draw_type,"roundrects") == 0){
  1165.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1166.                 if(reply_format < 1){reply_format = 2;}
  1167.                 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]);
  1168.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1169.             }
  1170.             else
  1171.             if( strcmp(draw_type,"rect") == 0){
  1172.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1173.                 if(reply_format < 1){reply_format = 2;}
  1174.                 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]);
  1175.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1176.             }
  1177.             else
  1178.             if( strcmp(draw_type,"roundrect") == 0){
  1179.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1180.                 if(reply_format < 1){reply_format = 2;}
  1181.                 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]);
  1182.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1183.             }
  1184.             else
  1185.             if( strcmp(draw_type,"text") == 0){
  1186.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}      
  1187.                 if(reply_format < 1){reply_format = 17;}
  1188.                 add_js_text(js_include_file,canvas_root_id,font_size,font_family,font_color,stroke_opacity,use_rotate,angle,use_translate,translate_x,translate_y);
  1189.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1190.             }
  1191.             else
  1192.             {
  1193.                 canvas_error("unknown drawtype or typo? ");
  1194.             }
  1195.             reset();
  1196.         break;
  1197.         case PLOTSTEPS:
  1198.             /*
  1199.              @ plotsteps a_number
  1200.              @ default 150
  1201.              @ use with care !
  1202.             */
  1203.             plot_steps = (int) (get_real(infile,1));
  1204.             break;
  1205.         case FONTSIZE:
  1206.         /*
  1207.          @fontsize font_size
  1208.          @default value 12
  1209.         */
  1210.             font_size = (int) (get_real(infile,1));
  1211.             break;
  1212.         case FONTCOLOR:
  1213.         /*
  1214.          @fontcolor color
  1215.          @color: hexcolor or colorname
  1216.          @default: black
  1217.          @example usage: x/y-axis text
  1218.         */
  1219.             font_color = get_color(infile,1);
  1220.             break;
  1221.         case ANIMATE:
  1222.         /*
  1223.          @animate type
  1224.          @type may be "point" (nothing else , yet...)
  1225.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1226.          @will animate a point on the next plot/curve command
  1227.          @the curve will not be draw
  1228.          @moves repeatedly from xmin to xmax
  1229.         */
  1230.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1231.             break;
  1232.         case LEVELCURVE:
  1233.         /*
  1234.         @levelcurve color,expression in x/y,l1,l2,...
  1235.         @Draws (pixel) level curves for expression, with levels l1, l2,...
  1236.         @Take care : the arrays for holding the javascript data are limited in size !!
  1237.         */
  1238.             stroke_color = get_color(infile,0);
  1239.             char *fun1 = get_string_argument(infile,0);
  1240.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1241.             i = 0;
  1242.             done = FALSE;
  1243.             while( !done ){
  1244.              double_data[i] = get_real(infile,1);
  1245.              i++;
  1246.             }
  1247.             for(c = 0 ; c < i; c++){
  1248.              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));\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);
  1249.              click_cnt++;
  1250.             }
  1251.             reset();
  1252.             break;
  1253.         case CURVE:
  1254.         /*
  1255.          @curve color,formula(x)
  1256.          @plot color,formula(x)
  1257.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1258.          @use command "precision" to increase the number of digits of the plotted points
  1259.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1260.          @may be set draggable / onclick
  1261.         */
  1262.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1263.                 use_parametric = FALSE;
  1264.                 stroke_color = get_color(infile,0);
  1265.                 char *fun1 = get_string_argument(infile,0);
  1266.                 char *fun2 = get_string_argument(infile,1);
  1267.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1268.                 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));\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);
  1269.                 click_cnt++;
  1270.             }
  1271.             else
  1272.             {
  1273.                 stroke_color = get_color(infile,0);
  1274.                 char *fun1 = get_string_argument(infile,1);
  1275.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");} 
  1276.                 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));\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);
  1277.                 click_cnt++;
  1278.             }
  1279.             animation_type = 9;/* reset to curve plotting without animation */
  1280.             reset();
  1281.             break;
  1282.         case FLY_TEXT:
  1283.         /*
  1284.         @ text fontcolor,x,y,font,text_string
  1285.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1286.         @ use command 'fontsize' to increase base fontsize for the keywords
  1287.         @ may be set "onclick" or "drag xy"
  1288.         @ backwards compatible with flydraw
  1289.         @ unicode supported: text red,0,0,huge,\\u2232
  1290.         @ use command 'string' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1291.         @ 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 rested 'fontfamily' to something lke 'fontfamily Ariel' before the old flydraw commands.
  1292.         */
  1293.             for(i = 0; i < 5 ;i++){
  1294.                 switch(i){
  1295.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1296.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1297.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1298.                     case 3: fly_font = get_string_argument(infile,0);
  1299.                             if(strcmp(fly_font,"giant") == 0){
  1300.                                 font_size = (int)(font_size + 24);
  1301.                             }
  1302.                             else
  1303.                             {
  1304.                                 if(strcmp(fly_font,"huge") == 0){
  1305.                                     font_size = (int)(font_size + 14);
  1306.                                 }
  1307.                                 else
  1308.                                 {
  1309.                                     if(strcmp(fly_font,"large") == 0){
  1310.                                         font_size = (int)(font_size + 6);
  1311.                                         }
  1312.                                         else
  1313.                                         {
  1314.                                             if(strcmp(fly_font,"small") == 0){
  1315.                                                 font_size = (int)(font_size - 4);
  1316.                                                 if(font_size<0){font_size = 8;}
  1317.                                         }
  1318.                                     }
  1319.                                 }
  1320.                             }
  1321.                             break; /* font_size ! */
  1322.                     case 4:
  1323.                         temp = get_string_argument(infile,1);
  1324.                         decimals = find_number_of_digits(precision);
  1325.                         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,%d,\"%s\",%d,\"%s\",%d,%s));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,0,0,temp,font_size,font_family,use_affine,affine_matrix);
  1326.                         click_cnt++;reset();break;
  1327.                     default:break;
  1328.                 }
  1329.             }
  1330.             break;
  1331.         case FLY_TEXTUP:
  1332.         /*
  1333.          @ textup fontcolor,x,y,font,text_string
  1334.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1335.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1336.          @ use command 'fontsize' to increase base fontsize for the keywords
  1337.          @ backwards compatible with flydraw
  1338.          @ unicode supported: textup red,0,0,huge,\\u2232
  1339.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1340.          @ 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 rested 'fontfamily' to something lke 'fontfamily Ariel' before the old flydraw commands.
  1341.         */
  1342.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}  
  1343.             for(i = 0; i<5 ;i++){
  1344.                 switch(i){
  1345.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1346.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1347.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1348.                     case 3: fly_font = get_string_argument(infile,0);
  1349.                             if(strcmp(fly_font,"giant") == 0){
  1350.                                 font_size = (int)(font_size + 24);
  1351.                             }
  1352.                             else
  1353.                             {
  1354.                                 if(strcmp(fly_font,"huge") == 0){
  1355.                                     font_size = (int)(font_size + 14);
  1356.                                 }
  1357.                                 else
  1358.                                 {
  1359.                                     if(strcmp(fly_font,"large") == 0){
  1360.                                         font_size = (int)(font_size + 6);
  1361.                                         }
  1362.                                         else
  1363.                                         {
  1364.                                             if(strcmp(fly_font,"small") == 0){
  1365.                                                 font_size = (int)(font_size - 4);
  1366.                                                 if(font_size<0){font_size = 8;}
  1367.                                         }
  1368.                                     }
  1369.                                 }
  1370.                             }
  1371.                             break; /* font_size ! */
  1372.                     case 4:
  1373.                     decimals = find_number_of_digits(precision);
  1374.                     temp = get_string_argument(infile,1);
  1375.                     string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,[%d,%d]);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,temp,use_rotate,angle,use_translate,translate_x,translate_y);
  1376.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1377.                     snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,90,\"%s\",%d,%.2f,%d,[%d,%d]);\n",STATIC_CANVAS,int_data[0],int_data[1],font_size,font_family,font_color,stroke_opacity,temp,use_rotate,angle,use_translate,translate_x,translate_y);
  1378.                     add_to_buffer(tmp_buffer);
  1379.                     break;
  1380.                     default:break;
  1381.                 }
  1382.             }
  1383.             reset();
  1384.             break;
  1385.         case FONTFAMILY:
  1386.         /*
  1387.          @ fontfamily font_description
  1388.          @ set the font family; for browsers that support it
  1389.          @ font_description: Ariel ,Courier, Helvetica etc
  1390.          @ 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
  1391.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1392.         */
  1393.             font_family = get_string(infile,1);
  1394.             break;
  1395.         case STRINGUP:
  1396.         /*
  1397.          @ stringup color,x,y,rotation_degrees,the text string
  1398.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1399.          @ unicode supported: stringup red,0,0,45,\\u2232
  1400.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1401.  
  1402.         */
  1403.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1404.             for(i=0;i<6;i++){
  1405.                 switch(i){
  1406.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1407.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1408.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1409.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1410.                     case 4: decimals = find_number_of_digits(precision);
  1411.                             temp = get_string_argument(infile,1);
  1412.                             string_length = snprintf(NULL,0,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,[%d,%d]);\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_translate,translate_x,translate_y);
  1413.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1414.                             snprintf(tmp_buffer,string_length,"draw_text(%d,%d,%d,%d,\"%s\",\"%s\",%.2f,%.2f,\"%s\",%d,%.2f,%d,[%d,%d]);\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_translate,translate_x,translate_y);
  1415.                             add_to_buffer(tmp_buffer);
  1416.                             break;
  1417.                     default:break;
  1418.                 }
  1419.             }
  1420.             reset();
  1421.             break;
  1422.         case STRING:
  1423.         /*
  1424.          @ string color,x,y,the text string
  1425.          @ may be set "onclick" or "drag xy"
  1426.          @ unicode supported: string red,0,0,\\u2232
  1427.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1428.         */
  1429.             for(i=0;i<5;i++){
  1430.                 switch(i){
  1431.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1432.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1433.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1434.                     case 3: decimals = find_number_of_digits(precision);
  1435.                         temp = get_string_argument(infile,1);
  1436.                         decimals = find_number_of_digits(precision);
  1437.                         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,%d,\"%s\",%d,\"%s\",%d,%s));\n",click_cnt,onclick,drag_type,decimals,double_data[0],decimals,double_data[1],line_width,stroke_color,stroke_opacity,stroke_color,stroke_opacity,0,0,0,0,0,0,temp,font_size,font_family,use_affine,affine_matrix);
  1438.                         click_cnt++;reset();break;
  1439.                             break;
  1440.                     default:break;
  1441.                 }
  1442.             }
  1443.             break;
  1444.         case MATHML:
  1445.         /*
  1446.         @ mathml x1,y1,x2,y2,mathml_string
  1447.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1448.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1449.         @ 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();"
  1450.         @ 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....
  1451.        
  1452.         */
  1453.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1454.             for(i=0;i<5;i++){
  1455.                 switch(i){
  1456.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1457.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1458.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1459.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1460.                     case 4: decimals = find_number_of_digits(precision);
  1461.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1462.                             temp = get_string(infile,1);
  1463.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1464.                             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);
  1465.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1466.                             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);
  1467.                             add_to_buffer(tmp_buffer);
  1468.                             /*
  1469.                              in case inputs are present , trigger adding the read_mathml()
  1470.                              if no other reply_format is defined
  1471.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1472.                              */
  1473.                             if(strstr(temp,"mathml0") != NULL){
  1474.                              if(reply_format < 1 ){reply_format = 16;} /* no other reply type is defined */
  1475.                             }
  1476.                             break;
  1477.                     default:break;
  1478.                 }
  1479.             }
  1480.             reset();
  1481.             break;
  1482.         case HTTP:
  1483.         /*
  1484.          @http x1,y1,x2,y2,http://some_adress.com
  1485.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1486.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1487.          @can not be 'set onclick' or 'drag xy'
  1488.         */
  1489.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}    
  1490.             for(i=0;i<5;i++){
  1491.                 switch(i){
  1492.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1493.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1494.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1495.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1496.                     case 4: decimals = find_number_of_digits(precision);
  1497.                             temp = get_string(infile,1);
  1498.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1499.                             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);
  1500.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1501.                             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);
  1502.                             add_to_buffer(tmp_buffer);
  1503.                     break;
  1504.                 }
  1505.             }
  1506.             reset();
  1507.             break;
  1508.         case HTML:
  1509.         /*
  1510.          @ html x1,y1,x2,y2,html_string
  1511.          @ all tags are allowed
  1512.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1513.          @ 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.
  1514.          
  1515.          note: uses the same code as 'mathml'
  1516.         */
  1517.             break;
  1518.         case X_AXIS_STRINGS:
  1519.         /*
  1520.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1521.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1522.          @ use these x-axis values in stead of default xmin...xmax
  1523.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1524.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1525.          @ 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
  1526.          @ 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
  1527.         */
  1528.             temp = get_string(infile,1);
  1529.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1530.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1531.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1532.             use_axis_numbering = 1;
  1533.             break;
  1534.         case Y_AXIS_STRINGS:
  1535.         /*
  1536.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1537.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1538.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1539.          @ use these y-axis values in stead of default ymin...ymax
  1540.          @ 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
  1541.         */
  1542.             temp = get_string(infile,1);
  1543.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1544.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1545.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1546.             use_axis_numbering = 1;
  1547.             break;
  1548.          
  1549.         case AXIS_NUMBERING:
  1550.         /*
  1551.             @ axisnumbering
  1552.             @ keyword, no aguments required
  1553.         */
  1554.             use_axis_numbering = 1;
  1555.             break;
  1556.         case AXIS:
  1557.         /*
  1558.             @ axis
  1559.             @ keyword, no aguments required
  1560.  
  1561.         */
  1562.             use_axis = TRUE;
  1563.             break;
  1564.         case SGRAPH:
  1565.         /*
  1566.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  1567.          @ primitive implementation of a 'broken scale' graph...
  1568.          @ not very versatile.
  1569.          @ 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
  1570.         */
  1571.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  1572.             for(i = 0 ; i < 8 ;i++){
  1573.                 switch(i){
  1574.                     case 0:double_data[0] = get_real(infile,0);break;
  1575.                     case 1:double_data[1] = get_real(infile,0);break;
  1576.                     case 2:double_data[2] = get_real(infile,0);break;
  1577.                     case 3:double_data[3] = get_real(infile,0);break;
  1578.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  1579.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  1580.                     case 6:stroke_color = get_color(infile,0);break;
  1581.                     case 7:font_color = get_color(infile,1);
  1582.                     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);
  1583.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1584.                     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);
  1585.                     add_to_buffer(tmp_buffer);
  1586.                     break;
  1587.                     default:break;
  1588.                 }
  1589.             }
  1590.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  1591.             break;
  1592.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  1593.         /*
  1594.          @ grid step_x,step_y,gridcolor
  1595.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1596.          @ 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
  1597.          @ 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)
  1598.          @ can not be set "onclick" or "drag xy"
  1599.          @ 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')
  1600.          @ 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')
  1601.          @ 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')
  1602.         */
  1603.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  1604.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  1605.             for(i=0;i<4;i++){
  1606.                 switch(i){
  1607.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  1608.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  1609.                     case 2:
  1610.                     if( use_axis == TRUE ){
  1611.                         stroke_color = get_color(infile,0);
  1612.                         done = FALSE;
  1613.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  1614.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  1615.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  1616.                         fill_color = get_color(infile,1); /* used as axis_color*/
  1617.                     }
  1618.                     else
  1619.                     {
  1620.                         int_data[0] = 1;
  1621.                         int_data[1] = 1;
  1622.                         stroke_color = get_color(infile,1);
  1623.                         fill_color = stroke_color;
  1624.                     }
  1625.                     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 !");}
  1626.                     /* set snap_x snap_y values in pixels */
  1627.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f\n;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  1628. /* 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_translate,vector,use_dashed,dashtype0,dashtype1,font_color,fill_opacity){ */
  1629.  
  1630.                     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,[%d,%d],%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_translate,translate_x,translate_y,use_dashed,dashtype[0],dashtype[1],font_color,fill_opacity);
  1631.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1632.                     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,[%d,%d],%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_translate,translate_x,translate_y,use_dashed,dashtype[0],dashtype[1],font_color,fill_opacity);
  1633.                     add_to_buffer(tmp_buffer);
  1634.                     break;
  1635.                 }
  1636.             }
  1637.             reset();
  1638.             break;
  1639.         case OPACITY:
  1640.         /*
  1641.         @ opacity 0-255,0-255
  1642.         @
  1643.         */
  1644.             for(i = 0 ; i<2;i++){
  1645.                 switch(i){
  1646.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  1647.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  1648.                     default: break;
  1649.                 }
  1650.             }
  1651.             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 ? */
  1652.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  1653.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  1654.             break;
  1655.         case ROTATE:
  1656.         /*
  1657.          @rotate rotation_angle
  1658.          @
  1659.         */
  1660.             use_rotate = TRUE;
  1661.             use_translate = TRUE;
  1662.             translate_x = x2px(0);
  1663.             translate_y = y2px(0);
  1664.             angle = get_real(infile,1);
  1665.             break;
  1666.         case KILLAFFINE:
  1667.         /*
  1668.         @ killaffine
  1669.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  1670.         */
  1671.             use_affine = FALSE;
  1672.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");    
  1673.             break;
  1674.         case AFFINE:
  1675.         /*
  1676.          @affine a,b,c,d,tx,ty
  1677.          @ defines a transformation matrix for subsequent objects
  1678.          @ use keyword 'killaffine' to end the transformation
  1679.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  1680.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  1681.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  1682.          @ a : Scales the drawings horizontally
  1683.          @ b : Skews the drawings horizontally
  1684.          @ c : Skews the drawings vertically
  1685.          @ d : Scales the drawings vertically
  1686.          @ tx: Moves the drawings horizontally in pixels !
  1687.          @ ty: Moves the drawings vertically in pixels !
  1688.         */
  1689.             for(i = 0 ; i<6;i++){
  1690.                 switch(i){
  1691.                     case 0: double_data[0] = get_real(infile,0);break;
  1692.                     case 1: double_data[1] = get_real(infile,0);break;
  1693.                     case 2: double_data[2] = get_real(infile,0);break;
  1694.                     case 3: double_data[3] = get_real(infile,0);break;
  1695.                     case 4: int_data[0] = (int)(get_real(infile,0));break;
  1696.                     case 5: int_data[1] = (int)(get_real(infile,1));
  1697.                         use_affine = TRUE;
  1698.                         string_length = snprintf(NULL,0,"[%.2f,%.2f,%.2f,%.2f,%d,%d] ",double_data[0],double_data[1],double_data[2],double_data[3],int_data[0],int_data[1]);
  1699.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  1700.                         snprintf(affine_matrix,string_length,"[%.2f,%.2f,%.2f,%.2f,%d,%d] ",double_data[0],double_data[1],double_data[2],double_data[3],int_data[0],int_data[1]);    
  1701.                     break;
  1702.                     default: break;
  1703.                 }
  1704.             }
  1705.         break;
  1706.         case KILLTRANSLATION:
  1707.         /*
  1708.          killtranslation
  1709.         */
  1710.             break;
  1711.         case TRANSLATION:
  1712.         /*
  1713.          @translation tx,ty
  1714.          @
  1715.         */
  1716.             use_translate = TRUE;
  1717.             translate_x = get_real(infile,0);
  1718.             translate_y = get_real(infile,1);
  1719.             break;
  1720.         case DASHED:
  1721.         /*
  1722.         @ keyword "dashed"
  1723.         @ next object will be drawn with a dashed line
  1724.         @ change dashing scheme by using command "dashtype int,int)
  1725.         */
  1726.             use_dashed = TRUE;
  1727.             break;
  1728.         case FILLED:
  1729.         /*
  1730.         @ keyword "filled"
  1731.         @ the next 'fillable' object (only) will be filled
  1732.         @ use command "fillcolor color" to set fillcolor
  1733.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  1734.         @ 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 !
  1735.         */
  1736.             use_filled = TRUE;
  1737.             break;
  1738.         case STYLE:
  1739.         /*
  1740.          @highlight color,opacity,linewidth
  1741.          @ NOT IMPLEMENTED
  1742.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  1743.         */
  1744.             break;
  1745.         case FILLCOLOR:
  1746.         /*
  1747.         @ fillcolor colorname or #hex
  1748.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  1749.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  1750.         */
  1751.             fill_color = get_color(infile,1);
  1752.             break;
  1753.         case STROKECOLOR:
  1754.         /*
  1755.         @ strokecolor colorname or #hex
  1756.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  1757.         */
  1758.             stroke_color = get_color(infile,1);
  1759.             break;
  1760.         case BGIMAGE:
  1761.         /*
  1762.          @bgimage image_location
  1763.          @use an image as background .<br />(we use the background of 'canvas_div' )
  1764.          @the background image will be resized to match "width = xsize" and "height = ysize"
  1765.         */
  1766.         URL = get_string(infile,1);
  1767.         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);
  1768.             break;
  1769.         case BGCOLOR:
  1770.         /*
  1771.          @bgcolor colorname or #hex
  1772.          @use this color as background of the "div" containing the canvas(es)
  1773.         */
  1774.         /* [255,255,255]*/
  1775.             bgcolor = get_string(infile,1);
  1776.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  1777.                 int found = 0;
  1778.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  1779.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  1780.                         bgcolor = colors[i].hex;
  1781.                         found = 1;
  1782.                         break;
  1783.                     }
  1784.                 }
  1785.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  1786.             }
  1787.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  1788.             break;
  1789.         case COPY:
  1790.         /*
  1791.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  1792.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  1793.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  1794.         @ [filename] is the URL of the image   
  1795.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  1796.         @ 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
  1797.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  1798.  
  1799.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  1800.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  1801.         */
  1802.             for(i = 0 ; i<7;i++){
  1803.                 switch(i){
  1804.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  1805.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  1806.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  1807.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  1808.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  1809.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  1810.                     case 6: URL = get_string(infile,1);
  1811.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  1812.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  1813.                             if( drag_type > -1 ){
  1814.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  1815.                                 if(reply_format < 1 ){reply_format = 20;}
  1816.                                 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);
  1817.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1818.                                 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);                       
  1819.                                 drag_type = -1;
  1820.                                 ext_img_cnt++;
  1821.                             }
  1822.                             else
  1823.                             {
  1824.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  1825.                                 /*
  1826.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  1827.                                 */
  1828.                                 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]);
  1829.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1830.                                 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]);
  1831.                             }
  1832.                             add_to_buffer(tmp_buffer);
  1833.                             break;
  1834.                     default: break;
  1835.                 }
  1836.             }
  1837.             reset();
  1838.             break;
  1839. /*
  1840. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  1841. img     Specifies the image, canvas, or video element to use
  1842. sx      The x coordinate where to start clipping : x1 = int_data[0]
  1843. sy      The y coordinate where to start clipping : x2 = int_data[1]
  1844. swidth  The width of the clipped image : int_data[2] - int_data[0]
  1845. sheight The height of the clipped image : int_data[3] - int_data[1]
  1846. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  1847. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  1848. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  1849. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  1850. */
  1851.         case COPYRESIZED:
  1852.         /*
  1853.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  1854.         @ 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
  1855.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  1856.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  1857.         @ 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
  1858.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  1859.         */
  1860.             for(i = 0 ; i<9;i++){
  1861.                 switch(i){
  1862.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  1863.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  1864.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  1865.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  1866.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  1867.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  1868.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  1869.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  1870.                     case 8: URL = get_string(infile,1);
  1871.                             if( drag_type > -1 ){
  1872.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  1873.                                 if(reply_format < 1 ){reply_format = 20;}
  1874.                                 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);
  1875.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1876.                                 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);
  1877.                                 drag_type = -1;
  1878.                                 ext_img_cnt++;
  1879.                             }
  1880.                             else
  1881.                             {
  1882.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  1883.                                 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]);
  1884.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1885.                                 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]);
  1886.                             }
  1887.                             add_to_buffer(tmp_buffer);
  1888.                     default: break;
  1889.                 }
  1890.             }
  1891.             reset();
  1892.             break;
  1893.         case BUTTON:
  1894.         /*
  1895.          button x,y,value
  1896.         */
  1897.         break;
  1898.         case INPUTSTYLE:
  1899.         /*
  1900.         @ inputstyle style_description
  1901.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  1902.         */
  1903.             input_style = get_string(infile,1);
  1904.             break;
  1905.         case INPUT:
  1906.         /*
  1907.          @ input x,y,size,editable,value
  1908.          @ to set inputfield "readonly", use editable = 0
  1909.          @ only active inputfields (editable = 1) will be read with read_canvas();
  1910.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  1911.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  1912.         */
  1913.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}    
  1914.             for(i = 0 ; i<5;i++){
  1915.                 switch(i){
  1916.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  1917.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  1918.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  1919.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  1920.                     case 4:
  1921.                             temp = get_string_argument(infile,1);
  1922.                             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);
  1923.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1924.                             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);
  1925.                             add_to_buffer(tmp_buffer);
  1926.                             input_cnt++;break;
  1927.                     default: break;
  1928.                 }
  1929.             }
  1930.             if(reply_format < 1 ){reply_format = 15;}
  1931.             reset();
  1932.             break;
  1933.         case TEXTAREA:
  1934.         /*
  1935.          @ textarea x,y,cols,rows,readonly,value
  1936.          @ may be further controlled by "inputstyle"
  1937.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  1938.         */
  1939.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}  
  1940.             for(i = 0 ; i<6;i++){
  1941.                 switch(i){
  1942.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  1943.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  1944.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  1945.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  1946.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  1947.                     case 5: temp = get_string_argument(infile,1);
  1948.                             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);
  1949.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1950.                             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);
  1951.                             add_to_buffer(tmp_buffer);
  1952.                             input_cnt++;break;
  1953.                     default: break;
  1954.                 }
  1955.             }
  1956.             if(reply_format < 1 ){reply_format = 15;}
  1957.             reset();
  1958.             break;
  1959.         case MOUSE_PRECISION:
  1960.         /*
  1961.             @ precision int
  1962.             @ 10 = 1 decimal ; 100 = 2 decimals etc
  1963.             @ may be used / changed before every object
  1964.         */
  1965.             precision = (int) (get_real(infile,1));
  1966.             break;
  1967.         case ZOOM:
  1968.         /*
  1969.          @ zoom button_color
  1970.          @ introduce a controlpanel at the lower right corner
  1971.          @ 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
  1972.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  1973.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  1974.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  1975.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  1976.          @ 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 !!
  1977.         */
  1978.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  1979.             if( js_function[DRAW_ZOOM_BUTTONS] != 1 ){ js_function[DRAW_ZOOM_BUTTONS] = 1;}
  1980.             /* we use BG_CANVAS (0) */
  1981.             stroke_color = get_color(infile,1);
  1982.             string_length = snprintf(NULL,0," draw_zoom_buttons(%d,\"%s\",%f);",BG_CANVAS,stroke_color,stroke_opacity);
  1983.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1984.             snprintf(tmp_buffer,MAX_BUFFER-1,"draw_zoom_buttons(%d,\"%s\",%f);",BG_CANVAS,stroke_color,stroke_opacity);
  1985.             add_to_buffer(tmp_buffer);
  1986.             done = TRUE;
  1987.             break;
  1988.         case ONCLICK:
  1989.         /*
  1990.          @ onclick
  1991.          @ keyword, no arguments
  1992.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  1993.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  1994.          @ NOTE: not all objects  may be set clickable
  1995.         */
  1996.            
  1997.             onclick = 1;
  1998.             break;
  1999.         case DRAG:
  2000.         /*
  2001.          @ drag [x][y][xy]
  2002.          @ the next object will be draggable in x / y / xy direction
  2003.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2004.          @ 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.
  2005.          @ 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 !!
  2006.         */
  2007.             temp = get_string(infile,1);
  2008.             if(strstr(temp,"xy") != NULL ){
  2009.                 drag_type = 0;
  2010.             }
  2011.             else
  2012.             {
  2013.                 if(strstr(temp,"x") != NULL ){
  2014.                     drag_type = 1;
  2015.                 }
  2016.                 else
  2017.                 {
  2018.                     drag_type = 2;
  2019.                 }
  2020.             }
  2021.             onclick = 2;
  2022.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2023.             break;
  2024.         case BLINK:
  2025.         /*
  2026.          @ blink time(seconds)
  2027.          @ NOT IMPLEMETED -YET
  2028.         */
  2029.             break;
  2030.         case MOUSE:
  2031.         /*
  2032.          @ mouse color,fontsize
  2033.          @ will display the cursor coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2034.         */
  2035.             use_mouse_coordinates = TRUE; /* will add & call function "use_mouse_coordinates(){}" in current_canvas /current_context */
  2036.             stroke_color = get_color(infile,0);
  2037.             font_size = (int) (get_real(infile,1));
  2038.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity);
  2039.             break;
  2040.         case INTOOLTIP:
  2041.             /*
  2042.             @ intooltip link_text
  2043.             @ link_text is a single line (span-element)
  2044.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2045.             @ link_text may contain HTML markup
  2046.             @ the canvas will be displayed in a tooltip on 'link_text'
  2047.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2048.             */
  2049.             if(use_input_xy == TRUE){canvas_error("intooltip can not be combined with userinput_xy command");}
  2050.             use_tooltip = TRUE;
  2051.             tooltip_text = get_string(infile,1);
  2052.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2053.             break;
  2054.         case AUDIO:
  2055.         /*
  2056.         @ audio x,y,w,h,loop,visible,audiofile location
  2057.         @ x,y : left top corner of audio element (in xrange / yrange)
  2058.         @ w,y : width and height in pixels
  2059.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2060.         @ visible : 0 or 1 (1 = show controls)
  2061.         @ audio format may be in *.mp3 or *.ogg
  2062.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2063.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2064.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2065.         @ 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 />
  2066.         */
  2067.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2068.             for(i=0;i<7;i++){
  2069.                 switch(i){
  2070.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2071.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2072.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2073.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2074.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2075.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2076.                     case 6:
  2077.                     temp = get_string(infile,1);
  2078.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2079.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2080.                     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);
  2081.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2082.                     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);
  2083.                     add_to_buffer(tmp_buffer);
  2084.                     break;
  2085.                     default:break;
  2086.                 }
  2087.             }
  2088.             reset();
  2089.             break;
  2090.         case VIDEO:
  2091.         /*
  2092.         @ video x,y,w,h,videofile location
  2093.         @ x,y : left top corner of audio element (in xrange / yrange)
  2094.         @ w,y : width and height in pixels
  2095.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2096.         @ video format may be in *.mp4 (todo:other formats)
  2097.         */
  2098.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2099.             for(i=0;i<5;i++){
  2100.                 switch(i){
  2101.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2102.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2103.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2104.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2105.                     case 4: temp = get_string(infile,1);
  2106.                             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);
  2107.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2108.                             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);
  2109.                             add_to_buffer(tmp_buffer);
  2110.                             break;
  2111.                     default:break;
  2112.                 }
  2113.             }
  2114.             reset();
  2115.             break;
  2116.         case HATCHFILL:
  2117.         /*
  2118.         @ hatchfill x0,y0,dx,dy,color
  2119.         @ x0,y0 in xrange / yrange
  2120.         @ distances dx,dy in pixels
  2121.         */
  2122.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2123.             for(i=0;i<5;i++){
  2124.                 switch(i){
  2125.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2126.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2127.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2128.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2129.                     case 4: stroke_color = get_color(infile,1);
  2130.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2131.                     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);
  2132.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2133.                     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);
  2134.                     add_to_buffer(tmp_buffer);
  2135.                     break;
  2136.                     default:break;
  2137.                 }
  2138.             }
  2139.             reset();
  2140.         break;
  2141.         case DIAMONDFILL:
  2142.         /*
  2143.         @ diamondfill x0,y0,dx,dy,color
  2144.         @ x0,y0 in xrange / yrange
  2145.         @ distances dx,dy in pixels
  2146.         */
  2147.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2148.             for(i=0;i<5;i++){
  2149.                 switch(i){
  2150.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2151.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2152.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2153.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2154.                     case 4: stroke_color = get_color(infile,1);
  2155.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2156.                     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);
  2157.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2158.                     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);
  2159.                     add_to_buffer(tmp_buffer);
  2160.                     break;
  2161.                     default:break;
  2162.                 }
  2163.             }
  2164.             reset();
  2165.         break;
  2166.         case GRIDFILL:
  2167.         /*
  2168.         @ gridfill x0,y0,dx,dy,color
  2169.         @ x0,y0 in xrange / yrange
  2170.         @ distances dx,dy in pixels
  2171.         */
  2172.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2173.             for(i=0;i<5;i++){
  2174.                 switch(i){
  2175.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2176.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2177.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2178.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2179.                     case 4: stroke_color = get_color(infile,1);
  2180.                     /* draw_gridfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2181.                     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);
  2182.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2183.                     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);
  2184.                     add_to_buffer(tmp_buffer);
  2185.                     break;
  2186.                     default:break;
  2187.                 }
  2188.             }
  2189.             reset();
  2190.         break;
  2191.         case DOTFILL:
  2192.         /*
  2193.         @ dotfill x0,y0,dx,dy,color
  2194.         @ x0,y0 in xrange / yrange
  2195.         @ distances dx,dy in pixels
  2196.         @ radius of dots is linewidth
  2197.         */
  2198.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2199.             for(i=0;i<5;i++){
  2200.                 switch(i){
  2201.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2202.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2203.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2204.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2205.                     case 4: stroke_color = get_color(infile,1);
  2206.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2207.                     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);
  2208.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2209.                     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);
  2210.                     add_to_buffer(tmp_buffer);
  2211.                     break;
  2212.                     default:break;
  2213.                 }
  2214.             }
  2215.             reset();
  2216.         break;
  2217.         case IMAGEFILL:
  2218.         /*
  2219.         @ imagefill dx,dy,image_url
  2220.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2221.         @ After pattern filling ,the fill-color should be reset !
  2222.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2223.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2224.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2225.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2226.         */
  2227.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2228.             for(i=0 ;i < 3 ; i++){
  2229.                 switch(i){
  2230.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2231.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2232.                     case 2: URL = get_string_argument(infile,1);
  2233.                             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);
  2234.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2235.                             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);
  2236.                             add_to_buffer(tmp_buffer);
  2237.                     break;
  2238.                 }
  2239.             }
  2240.         break;
  2241.         case FILLTOBORDER:
  2242.         /*
  2243.         @ filltoborder x,y,bordercolor,color
  2244.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2245.         @ any other color will not act as border to the bucket fill
  2246.         @ use this command  after all boundary objects are declared.
  2247.         @ 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..
  2248.         */
  2249.             for(i=0 ;i < 4 ; i++){
  2250.                 switch(i){
  2251.                     case 0:double_data[0] = get_real(infile,0);break;
  2252.                     case 1:double_data[1] = get_real(infile,0);break;
  2253.                     case 2:bgcolor = get_color(infile,0);break;
  2254.                     case 3:fill_color = get_color(infile,1);
  2255.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2256.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2257.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2258.                            }
  2259.                            decimals = find_number_of_digits(precision);
  2260.                            string_length = snprintf(NULL,0,  "filltoborder(%.*f,%.*f,[%s,%d],[%s,%d]);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215));
  2261.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2262.                            snprintf(tmp_buffer,string_length,"filltoborder(%.*f,%.*f,[%s,%d],[%s,%d]);\n",decimals,double_data[0],decimals,double_data[1],bgcolor,(int) (fill_opacity/0.0039215),fill_color,(int) (fill_opacity/0.0039215));
  2263.                            add_to_buffer(tmp_buffer);
  2264.                            break;
  2265.                     default:break;
  2266.                     }
  2267.                 }
  2268.         break;
  2269.         case FLOODFILL:
  2270.         /*
  2271.         @ floodfill x,y,color
  2272.         @ alternative syntax: fill x,y,color
  2273.         @ fill the region of point (x:y) with color 'color'
  2274.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2275.         @ use this command  after all boundary objects are declared.
  2276.         @ Use command 'clickfill,color' for user click driven flood fill.
  2277.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2278.         @ 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..
  2279.         */
  2280.             for(i=0 ;i < 4 ; i++){
  2281.                 switch(i){
  2282.                     case 0:double_data[0] = get_real(infile,0);break;
  2283.                     case 1:double_data[1] = get_real(infile,0);break;
  2284.                     case 2:fill_color = get_color(infile,1);
  2285.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2286.                                 js_function[DRAW_FLOODFILL] = 1;
  2287.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2288.                            }
  2289.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2290.                            string_length = snprintf(NULL,0,  "floodfill(0,%.*f,%.*f,[%s,%d]);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215));
  2291.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2292.                            snprintf(tmp_buffer,string_length,"floodfill(0,%.*f,%.*f,[%s,%d]);\n",decimals,double_data[0],decimals,double_data[1],fill_color,(int) (fill_opacity/0.0039215));
  2293.                            add_to_buffer(tmp_buffer);
  2294.                            break;
  2295.                     default:break;
  2296.                     }
  2297.                 }
  2298.         break;
  2299.         case CLICKFILLMARGE:
  2300.             clickfillmarge = (int) (get_real(infile,1));
  2301.             break;
  2302.         /*
  2303.         @ clickfillmarge int
  2304.         @ default 20 (pixels)
  2305.         @ 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[])
  2306.         */
  2307.         case CLICKFILL:
  2308.         /*
  2309.         @ clickfill fillcolor
  2310.         @ user left mouse click will floodfill the area with fillcolor
  2311.         @ multiple areas may be coloured
  2312.         @ 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)
  2313.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2314.         @ background color of main div may be set by using command "bgcolor color"
  2315.         @ may not be combined with command "userdraw"
  2316.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2317.         */
  2318.          fill_color = get_color(infile,1);
  2319.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2320.             js_function[DRAW_FLOODFILL] = 1;
  2321.             add_js_floodfill(js_include_file,canvas_root_id);
  2322.          }
  2323.          fprintf(js_include_file,"\n<!-- begin command clickfill -->\nvar marge_xy = %d;var userdraw_x = new Array();var 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);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));
  2324.          add_read_canvas(1);
  2325.         break;
  2326.         case SETPIXEL:
  2327.         /*
  2328.         @ setpixel x,y,color
  2329.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  2330.         @ pixels can not be dragged or clicked
  2331.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2332.         */
  2333.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2334.             for(i=0;i<3;i++){
  2335.                 switch(i){
  2336.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  2337.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  2338.                     case 2: stroke_color = get_color(infile,1);
  2339.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2340.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2341.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2342.                            add_to_buffer(tmp_buffer);
  2343.                            break;
  2344.                     default:break;
  2345.                 }
  2346.             }
  2347.             reset();
  2348.         break;
  2349.         case PIXELSIZE:
  2350.         /*
  2351.         @ pixelsize int
  2352.         @ in case you want to deviate from default pixelsize = 1...
  2353.         */
  2354.             pixelsize = (int) get_real(infile,1);
  2355.         break;
  2356.         case PIXELS:
  2357.         /*
  2358.         @ pixels color,x1,y1,x2,y2,x3,y3...
  2359.         @ Draw  "points" with diameter 1 pixel
  2360.         @ pixels can not be dragged or clicked
  2361.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2362.         */
  2363.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2364.             stroke_color=get_color(infile,0);
  2365.             i=0;
  2366.             c=0;
  2367.             while( ! done ){     /* get next item until EOL*/
  2368.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  2369.                 for( c = 0 ; c < 2; c++){
  2370.                     if(c == 0 ){
  2371.                         double_data[i] = get_real(infile,0);
  2372.                         i++;
  2373.                     }
  2374.                     else
  2375.                     {
  2376.                         double_data[i] = get_real(infile,1);
  2377.                         i++;
  2378.                     }
  2379.                 }
  2380.             }
  2381.             decimals = find_number_of_digits(precision);
  2382.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  2383.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2384.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2385.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2386.             add_to_buffer(tmp_buffer);
  2387.             break;
  2388.         case REPLYFORMAT:
  2389.         /*
  2390.         @ replyformat number
  2391.         @ default values should be fine !
  2392.         @ 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></ul>
  2393.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  2394.         */
  2395.          reply_format = (int) get_real(infile,1);
  2396.         break;
  2397.         case LEGENDCOLORS:
  2398.         /*
  2399.         @ legendcolors color1:color2:color3:...:color_n
  2400.         @ will be used to colour a legend
  2401.         @ make sure the number of colours match the number of legend items
  2402.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  2403.         */
  2404.             temp = get_string(infile,1);
  2405.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2406.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",canvas_root_id,temp);
  2407.             break;
  2408.         case LEGEND:
  2409.         /*
  2410.         @ legend string1:string2:string3....string_n
  2411.         @ will be used to create a legend for a graph
  2412.         @ also see command 'piechart'  
  2413.         */
  2414.             temp = get_string(infile,1);
  2415.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2416.             fprintf(js_include_file,"var legend%d = [\"%s\"];",canvas_root_id,temp);
  2417.             break;
  2418.         case XLABEL:
  2419.         /*
  2420.         @ xlabel some_string
  2421.         @ will be used to create a label for the x-axis (label is in quadrant I)
  2422.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2423.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2424.         */
  2425.             temp = get_string(infile,1);
  2426.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  2427.             break;
  2428.         case YLABEL:
  2429.         /*
  2430.         @ ylabel some_string
  2431.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  2432.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2433.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2434.         */
  2435.             temp = get_string(infile,1);
  2436.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  2437.             break;
  2438.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  2439.         /*
  2440.         @ linegraph x1:y1;x2:y2...x_n:y;2
  2441.         @ will plot your data in a graph
  2442.         @ may only to be used together with command 'grid'
  2443.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2444.         @ use command 'legend' to provide an optional legend in right-top-corner
  2445.         @ also see command 'piechart'
  2446.         @ multiple linegraphs may be used in a single plot
  2447.         @ <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>
  2448.         */    
  2449.             temp = get_string(infile,1);
  2450.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2451.             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);
  2452.             linegraph_cnt++;
  2453.             reset();
  2454.             break;
  2455.         case CLOCK:
  2456.         /*
  2457.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  2458.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  2459.         @ 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
  2460.         @ 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>
  2461.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  2462.         @ no combinations with other reply_types allowed, for now
  2463.         @ 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
  2464.         */
  2465.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  2466.  
  2467.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  2468.             for(i=0;i<9;i++){
  2469.              switch(i){
  2470.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  2471.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  2472.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  2473.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  2474.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  2475.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  2476.               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 */
  2477.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  2478.                 switch(int_data[7]){
  2479.                     case 0:break;
  2480.                     case 1:if(clock_cnt == 0){
  2481.                                 if( reply_format == 0 ){
  2482.                                      reply_format = 18; /* user sets clock */
  2483.                                     /* 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");
  2484.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2485.                                      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");
  2486.                                      add_to_buffer(tmp_buffer);
  2487.                                     */
  2488.                                      fprintf(js_include_file,"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");
  2489.                                 }
  2490.                                 else
  2491.                                 {
  2492.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  2493.                                 }
  2494.                                 fprintf(stdout,"<br /><input type=\"button\" onclick=\"javascript:set_clock(%d,1,1)\" value=\"H+\" /><input type=\"button\" onclick=\"javascript:set_clock(%d,1,-1)\" value=\"H-\" /><input type=\"button\" onclick=\"javascript:set_clock(%d,2,1)\" value=\"M+\" /><input type=\"button\" onclick=\"javascript:set_clock(%d,2,-1)\" value=\"M-\" /><input type=\"button\" onclick=\"javascript:set_clock(%d,3,1)\" value=\"S+\" /><input type=\"button\" onclick=\"javascript:set_clock(%d,3,-1)\" value=\"S-\" /><br />",clock_cnt,clock_cnt,clock_cnt,clock_cnt,clock_cnt,clock_cnt);
  2495.                              }
  2496.                     break;
  2497.                     case 2:if( reply_format == 0 ){
  2498.                                 reply_format = 19; /* "onclick */
  2499.                                 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 = 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 = 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 ");
  2500.                             }
  2501.                             else
  2502.                             {
  2503.                                 if( reply_format != 19){
  2504.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  2505.                                  }
  2506.                             }
  2507.                      break;
  2508.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  2509.                 }
  2510.                 break;
  2511.                 case 8:
  2512.                         temp = get_string(infile,1);
  2513.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  2514.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  2515.                         string_length = snprintf(NULL,0,"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);
  2516.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2517.                         snprintf(tmp_buffer,string_length,"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);
  2518.                         add_to_buffer(tmp_buffer);
  2519.                         clock_cnt++;
  2520.                         break;
  2521.                 default:break;
  2522.              }
  2523.             }
  2524.             break;
  2525.         case BARCHART:
  2526.         /*
  2527.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  2528.         @ will be used to create a legend for bar graph
  2529.         @ may only to be used together with command 'grid'
  2530.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2531.         @ use command 'legend' to provide an optional legend in right-top-corner
  2532.         @ also see command 'piechart'  
  2533.         */
  2534.             temp = get_string(infile,1);
  2535.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  2536.             fprintf(js_include_file,"var barchart%d = [\"%s\"];",canvas_root_id,temp);
  2537.             reset();
  2538.             break;
  2539.         case PIECHART:
  2540.         /*
  2541.         @ piechart xc,yc,radius,'data+colorlist'
  2542.         @ (xc : yc) center of circle diagram in xrange/yrange
  2543.         @ radius in pixels
  2544.         @ 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
  2545.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  2546.         @ the number of colors must match the number of data.
  2547.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  2548.         @ 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...
  2549.         */
  2550.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}    
  2551.             for(i=0;i<5;i++){
  2552.                 switch(i){
  2553.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2554.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2555.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  2556.                     case 3: temp = get_string(infile,1);
  2557.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  2558.                             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,font_size,font_family);
  2559.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2560.                             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,font_size,font_family);
  2561.                             add_to_buffer(tmp_buffer);
  2562.                            break;
  2563.                     default:break;
  2564.                 }
  2565.             }
  2566.             reset();
  2567.         break;
  2568.         case STATUS:
  2569.             fprintf(js_include_file,"\nstatus=\"waiting\";\n");
  2570.             break;
  2571.         case XLOGBASE:
  2572.         /*
  2573.         @ xlogbase number
  2574.         @ sets the logbase number for the x-axis
  2575.         @ default value 10
  2576.         @ use together with commands xlogscale / xylogscale
  2577.         */
  2578.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  2579.             break;
  2580.         case YLOGBASE:
  2581.         /*
  2582.         @ ylogbase number
  2583.         @ sets the logbase number for the y-axis
  2584.         @ default value 10
  2585.         @ use together with commands ylogscale / xylogscale
  2586.         */
  2587.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  2588.             break;
  2589.         case XLOGSCALE:
  2590.         /*
  2591.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  2592.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2593.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  2594.          @ the linewidth is set using command 'linewidth int'
  2595.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2596.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  2597.          @ 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>
  2598.          @ note: the complete canvas will be used for the 'log paper'
  2599.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2600.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2601.          @ 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')  
  2602.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2603.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2604.         */
  2605.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2606.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  2607.             for(i=0;i<4;i++){
  2608.                 switch(i){
  2609.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  2610.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  2611.                     case 2: stroke_color = get_color(infile,0); break;
  2612.                     case 3: fill_color = get_color(infile,1);
  2613.                         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);
  2614.                         tmp_buffer = my_newmem(string_length+1);
  2615.                         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);
  2616.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  2617.                         add_to_buffer(tmp_buffer);
  2618.                         break;
  2619.                     default:break;
  2620.                 }
  2621.             }
  2622.             break;
  2623.         case YLOGSCALE:
  2624.         /*
  2625.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  2626.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2627.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  2628.          @ the linewidth is set using command 'linewidth int'
  2629.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2630.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  2631.          @ 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>
  2632.          @ note: the complete canvas will be used for the 'log paper'
  2633.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2634.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2635.          @ 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')  
  2636.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2637.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2638.         */
  2639.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2640.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  2641.             for(i=0;i<4;i++){
  2642.                 switch(i){
  2643.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  2644.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  2645.                     case 2: stroke_color = get_color(infile,0); break;
  2646.                     case 3: fill_color = get_color(infile,1);
  2647.                         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);
  2648.                         tmp_buffer = my_newmem(string_length+1);
  2649.                         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);
  2650.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  2651.                         add_to_buffer(tmp_buffer);
  2652.                         break;
  2653.                     default:break;
  2654.                 }
  2655.             }
  2656.             break;
  2657.         case XYLOGSCALE:
  2658.         /*
  2659.          @ xylogscale majorcolor,minorcolor
  2660.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2661.          @ the linewidth is set using command 'linewidth int'
  2662.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2663.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  2664.          @ 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>
  2665.          @ note: the complete canvas will be used for the 'log paper'
  2666.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2667.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2668.          @ 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')  
  2669.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2670.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2671.         */
  2672.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2673.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  2674.             for(i=0;i<2;i++){
  2675.                 switch(i){
  2676.                     case 0: stroke_color = get_color(infile,0); break;
  2677.                     case 1: fill_color = get_color(infile,1);
  2678.                         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);
  2679.                         tmp_buffer = my_newmem(string_length+1);
  2680.                         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);
  2681.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  2682.                         add_to_buffer(tmp_buffer);
  2683.                         break;
  2684.                     default:break;
  2685.                 }
  2686.             }
  2687.         break;
  2688.         default:sync_input(infile);
  2689.         break;
  2690.     }
  2691.   }
  2692.   /* we are done parsing script file */
  2693.  
  2694.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable shapes / objects  ! */
  2695.   add_javascript_functions(js_function,canvas_root_id);
  2696.    /* add read_canvas() etc functions if needed */
  2697.   if( reply_format > 0 ){ add_read_canvas(reply_format);}
  2698.   /* using mouse coordinate display ? */
  2699.   if( use_mouse_coordinates == TRUE ){
  2700.     tmp_buffer = my_newmem(26);
  2701.     snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2702.   }
  2703.   /* add global variables / contants */
  2704.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  2705.  var precision = %d;var xmin=%f;var xmax=%f;var ymin=%f;\
  2706.  var ymax=%f;var xmin_start=xmin;var xmax_start=xmax;\
  2707.  var ymin_start=ymin;var ymax_start=xmax;\
  2708.  var zoom_x_increment=0;var zoom_y_increment=0;\
  2709.  var pan_x_increment=0;var pan_y_increment=0;\
  2710.  if(use_ylogscale == 0 ){\
  2711.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (xmax - xmin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  2712.  }else{\
  2713.   zoom_x_increment = (xmax - xmin)/20;\
  2714.   pan_x_increment = (xmax - xmin)/20;\
  2715.  };\
  2716.  function start_canvas%d(type){\
  2717.   switch(type){\
  2718.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  2719.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  2720.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  2721.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  2722.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  2723.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  2724.    case 6:location.reload();break;\
  2725.    default:break;\
  2726.   };\
  2727.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  2728.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  2729.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  2730.   %s\
  2731.  };\
  2732.  start_canvas%d(22);\
  2733. };\n\
  2734. <!-- end wims_canvas_function -->\n\
  2735. wims_canvas_function%d();\n",precision,xmin,xmax,ymin,ymax,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  2736. /* done writing the javascript include file */
  2737. fclose(js_include_file);
  2738.  
  2739. }
  2740.  
  2741. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  2742. if(use_tooltip == TRUE){
  2743.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  2744. }
  2745. exit(EXIT_SUCCESS);
  2746. }
  2747. /* end main() */
  2748.  
  2749. /******************************************************************************
  2750. **
  2751. **  sync_input
  2752. **
  2753. **  synchronises input line - reads to end of line, leaving file pointer
  2754. **  at first character of next line.
  2755. **
  2756. **  Used by:
  2757. **  main program - error handling.
  2758. **
  2759. ******************************************************************************/
  2760. void sync_input(FILE *infile)
  2761. {
  2762.         int c = 0;
  2763.  
  2764.         if( c == '\n' || c == ';' ) return;
  2765.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  2766.         if( c == EOF ) finished = 1;
  2767.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  2768.         return;
  2769. }
  2770.  
  2771. /******************************************************************************/
  2772.  
  2773. char *str_replace(const char *str, const char *old, const char *new){
  2774. /* http://creativeandcritical.net/str-replace-c/ */
  2775.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  2776.     char *ret, *r;
  2777.     const char *p, *q;
  2778.     size_t oldlen = strlen(old);
  2779.     size_t count = 0;
  2780.     size_t retlen = 0;
  2781.     size_t newlen = strlen(new);
  2782.     if (oldlen != newlen){
  2783.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  2784.             count++;
  2785.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  2786.         }
  2787.     }
  2788.     else
  2789.     {
  2790.         retlen = strlen(str);
  2791.     }
  2792.    
  2793.     if ((ret = malloc(retlen + 1)) == NULL){
  2794.         ret = NULL;
  2795.         canvas_error("string argument is NULL");
  2796.     }
  2797.     else
  2798.     {
  2799.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  2800.             size_t l = q - p;
  2801.             memcpy(r, p, l);
  2802.             r += l;
  2803.             memcpy(r, new, newlen);
  2804.             r += newlen;
  2805.         }
  2806.         strcpy(r, p);
  2807.     }
  2808.     return ret;
  2809. }
  2810.  
  2811. /******************************************************************************/
  2812. /*
  2813. avoid the use of ctypes.h for tolower() toupper();
  2814. it gives trouble in FreeBSD 9.0 / 9.1 when used in a chroot environment (C library bug) : Undefined symbol "_ThreadRuneLocale"
  2815. Upper case -> Lower case : c = c - 'A'+ 'a';
  2816. Lower case ->  Upper case  c = c + 'A'  - 'a';
  2817. */
  2818. int tolower(int c){
  2819.  if(c <= 'Z'){
  2820.   if (c >= 'A'){
  2821.    return c - 'A' + 'a';
  2822.   }
  2823.  }
  2824.  return c;
  2825. }
  2826.  
  2827. int toupper(int c){
  2828.  if(c >= 'a' && c <= 'z'){
  2829.    return c + 'A' - 'a';
  2830.  }
  2831.  return c;
  2832. }
  2833.  
  2834. char *get_color(FILE *infile , int last){
  2835.     int c,i = 0,is_hex = 0;
  2836.     char temp[MAX_COLOR_STRING], *string;
  2837.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  2838.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  2839.         if( c == '#' ){
  2840.             is_hex = 1;
  2841.         }
  2842.         if( c != ' '){
  2843.             temp[i]=tolower(c);
  2844.             i++;
  2845.         }
  2846.     }
  2847.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  2848.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  2849.     if( c == EOF ){finished = 1;}
  2850.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  2851.     temp[i]='\0';
  2852.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  2853.     if( is_hex == 1 ){
  2854.         char red[3], green[3], blue[3];
  2855.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  2856.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  2857.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  2858.         int r = (int) strtol(red,   NULL, 16);
  2859.         int g = (int) strtol(green, NULL, 16);
  2860.         int b = (int) strtol(blue,  NULL, 16);
  2861.         string = (char *)my_newmem(12);
  2862.         snprintf(string,11,"%d,%d,%d",r,g,b);
  2863.         return string;
  2864.     }
  2865.     else
  2866.     {
  2867.         string = (char *)my_newmem(sizeof(temp));
  2868.         snprintf(string,sizeof(temp),"%s",temp);
  2869.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  2870.             if( strcmp( colors[i].name , string ) == 0 ){
  2871.                 return colors[i].rgb;
  2872.             }
  2873.         }
  2874.     }
  2875.     /* not found...return error */
  2876.     free(string);string = NULL;
  2877.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  2878.     return NULL;
  2879. }
  2880.  
  2881. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  2882.     int c,i=0;
  2883.     char  temp[MAX_BUFFER], *string;
  2884.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  2885.         temp[i]=c;
  2886.         i++;
  2887.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  2888.     }
  2889.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  2890.     if( c == '\n') { done = TRUE; line_number++; }
  2891.     if( c == EOF ) {
  2892.         finished = 1;
  2893.         if( last != 1 ){ canvas_error("expected more arguments");}
  2894.     }
  2895.     temp[i]='\0';
  2896.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  2897.     string=(char *)my_newmem(strlen(temp));
  2898.     snprintf(string,sizeof(temp),"%s",temp);
  2899.     return string;
  2900. }
  2901.  
  2902. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  2903.     int c,i=0;
  2904.     char temp[MAX_BUFFER], *string;
  2905.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  2906.         temp[i]=c;
  2907.         i++;
  2908.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  2909.     }
  2910.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  2911.     if( c == '\n') { line_number++; }
  2912.     if( c == EOF ) {finished = 1;}
  2913.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  2914.     temp[i]='\0';
  2915.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  2916.     string=(char *)my_newmem(sizeof(temp));
  2917.     snprintf(string,sizeof(temp),"%s",temp);
  2918.     done = TRUE;
  2919.     return string;
  2920. }
  2921.  
  2922. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  2923.     int c,i=0,found_calc = 0;
  2924.     double y;
  2925.     char tmp[MAX_INT];
  2926.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  2927.      if( c != ' ' ){
  2928.      /*
  2929.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  2930.      We will check after assert() if it's a NULL pointer...and exit program via :
  2931.      canvas_error("I'm having trouble parsing your \"expression\" ");
  2932.      */
  2933.       if( i == 0 &&  c == '+' ){
  2934.        continue;
  2935.       }
  2936.       else
  2937.       {
  2938.        if(canvas_iscalculation(c) != 0){
  2939.         found_calc = 1;
  2940.         c = tolower(c);
  2941.        }
  2942.        tmp[i] = c;
  2943.        i++;
  2944.       }
  2945.      }
  2946.      if( i > MAX_INT - 1){canvas_error("number too large");}
  2947.     }
  2948.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  2949.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  2950.     if( c == EOF ){done = TRUE ; finished = 1;}
  2951.     tmp[i]='\0';
  2952.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  2953.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  2954.      void *f = evaluator_create(tmp);
  2955.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  2956.      y = evaluator_evaluate_x(f, 1);
  2957.      /* if function is bogus; y = 1 : so no core dumps */
  2958.      evaluator_destroy(f);
  2959.     }
  2960.     else
  2961.     {
  2962.      y = atof(tmp);
  2963.     }
  2964.     return y;
  2965. }
  2966. void canvas_error(char *msg){
  2967.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  2968.     finished = 1;
  2969.     exit(EXIT_SUCCESS);
  2970. }
  2971.  
  2972.  
  2973. /* convert x/y coordinates to pixel */
  2974. int x2px(double x){
  2975.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  2976. }
  2977.  
  2978. int y2px(double y){
  2979.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  2980. }
  2981.  
  2982. double px2x(int x){
  2983.  return (x*(xmax - xmin)/xsize + xmin);
  2984. }
  2985. double px2y(int y){
  2986.  return (y*(ymax - ymin)/ysize + ymin);
  2987. }
  2988.  
  2989. void add_to_buffer(char *tmp){
  2990.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  2991.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  2992.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  2993.  if( space_left > strlen(tmp)){
  2994.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  2995.  }
  2996.  else
  2997.  {
  2998.   canvas_error("buffer is too big\n");
  2999.  }
  3000.  tmp = NULL;free(tmp);
  3001.  return;
  3002. }
  3003.  
  3004. void reset(){
  3005.  if(use_filled == TRUE){use_filled = FALSE;}
  3006.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3007.  if(use_translate == TRUE){use_translate = FALSE;}
  3008.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3009.  onclick = 0;
  3010. }
  3011.  
  3012.  
  3013.  
  3014. /* What reply format in read_canvas();
  3015.  
  3016. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3017. 1 = x1,x2,x3,x4....x_n
  3018.     y1,y2,y3,y4....y_n
  3019.  
  3020.     x/y in pixels
  3021.  
  3022. 2 = x1,x2,x3,x4....x_n
  3023.     y1,y2,y3,y4....y_n
  3024.     x/y in  xrange / yrange coordinate system
  3025.  
  3026. 3 = x1,x2,x3,x4....x_n
  3027.     y1,y2,y3,y4....y_n
  3028.     r1,r2,r3,r4....r_n
  3029.  
  3030.     x/y in pixels
  3031.     r in pixels
  3032.  
  3033. 4 = x1,x2,x3,x4....x_n
  3034.     y1,y2,y3,y4....y_n
  3035.     r1,r2,r3,r4....r_n
  3036.  
  3037.     x/y in  xrange / yrange coordinate system
  3038.     r in pixels
  3039.  
  3040. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3041.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3042.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3043.     By1,By2,By3,By4....By_n
  3044.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3045.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3046.     ....
  3047.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3048.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3049.    
  3050.     x/y in pixels
  3051.  
  3052. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3053.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3054.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3055.     By1,By2,By3,By4....By_n
  3056.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3057.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3058.     ....
  3059.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3060.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3061.  
  3062.     x/y in  xrange / yrange coordinate system
  3063.    
  3064. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3065.    
  3066.     x/y in pixels
  3067.  
  3068. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3069.    
  3070.     x/y in  xrange / yrange coordinate system
  3071.  
  3072. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n    
  3073.  
  3074.     x/y in pixels
  3075.  
  3076. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n    
  3077.  
  3078.     x/y in  xrange / yrange coordinate system
  3079.  
  3080. 11 = Ax1,Ay1,Ax2,Ay2
  3081.      Bx1,By1,Bx2,By2
  3082.      Cx1,Cy1,Cx2,Cy2
  3083.      Dx1,Dy1,Dx2,Dy2
  3084.      ......
  3085.      Zx1,Zy1,Zx2,Zy2
  3086.      
  3087.     x/y in  xrange / yrange coordinate system
  3088.  
  3089. 12 = Ax1,Ay1,Ax2,Ay2
  3090.      Bx1,By1,Bx2,By2
  3091.      Cx1,Cy1,Cx2,Cy2
  3092.      Dx1,Dy1,Dx2,Dy2
  3093.      ......
  3094.      Zx1,Zy1,Zx2,Zy2
  3095.      
  3096.     x/y in pixels
  3097.  
  3098. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3099.  
  3100.     x/y in  xrange / yrange coordinate system
  3101. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3102.     x/y in pixels
  3103. 15 = reply from inputfields,textareas
  3104.     reply1,reply2,reply3,...,reply_n
  3105.  
  3106. 16 = read mathml inputfields only
  3107.  
  3108. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3109.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3110.  
  3111. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3112. 19 = return clicked object number (analogue to shape-library onclick)
  3113. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3114. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3115. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3116.     x/y in  xrange / yrange coordinate system
  3117. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3118. */
  3119.  
  3120.  
  3121. void add_read_canvas(int type_reply){
  3122. /* just 1 reply type allowed */
  3123. switch(type_reply){
  3124. /*  TO DO
  3125. !!!!  NEED TO SIMPLIFY !!!!  
  3126. answers may have:
  3127. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3128. */
  3129.     case 1: fprintf(js_include_file,"\
  3130. \n<!-- begin function 1 read_canvas() -->\n\
  3131. function read_canvas(){\
  3132. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3133. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3134.  var p = 0;var input_reply = new Array();\
  3135.  if( document.getElementById(\"canvas_input0\")){\
  3136.   var t = 0;\
  3137.   while(document.getElementById(\"canvas_input\"+t)){\
  3138.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3139.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3140.     p++;\
  3141.    };\
  3142.    t++;\
  3143.   };\
  3144.  };\
  3145.  if( typeof userdraw_text != 'undefined' ){\
  3146.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3147.  }\
  3148.  else\
  3149.  {\
  3150.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3151.  }\
  3152. }\
  3153. else\
  3154. {\
  3155.  if( typeof userdraw_text != 'undefined' ){\
  3156.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3157.  }\
  3158.  else\
  3159.  {\
  3160.   return userdraw_x+\"\\n\"+userdraw_y;\
  3161.  }\
  3162. };\
  3163. };\
  3164. this.read_canvas = read_canvas;\n\
  3165. <!-- end function 1 read_canvas() -->");
  3166.     break;
  3167.     case 2: fprintf(js_include_file,"\
  3168. \n<!-- begin function 2 read_canvas() -->\n\
  3169. function read_canvas(){\
  3170. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3171. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3172. while(userdraw_x[p]){\
  3173.  reply_x[p] = px2x(userdraw_x[p]);\
  3174.  reply_y[p] = px2y(userdraw_y[p]);\
  3175.  p++;\
  3176. };\
  3177. if(p == 0){alert(\"nothing drawn...\");return;};\
  3178. if( document.getElementById(\"canvas_input0\")){\
  3179.  var p = 0;var input_reply = new Array();\
  3180.  if( document.getElementById(\"canvas_input0\")){\
  3181.   var t = 0;\
  3182.   while(document.getElementById(\"canvas_input\"+t)){\
  3183.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3184.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3185.     p++;\
  3186.    };\
  3187.    t++;\
  3188.   };\
  3189.  };\
  3190.  if( typeof userdraw_text != 'undefined' ){\
  3191.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3192.  }\
  3193.  else\
  3194.  {\
  3195.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3196.  }\
  3197. }\
  3198. else\
  3199. {\
  3200.  if( typeof userdraw_text != 'undefined' ){\
  3201.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3202.  }\
  3203.  else\
  3204.  {\
  3205.   return reply_x+\"\\n\"+reply_y;\
  3206.  };\
  3207. };\
  3208. };\
  3209. this.read_canvas = read_canvas;\n\
  3210. <!-- end function 2 read_canvas() -->");
  3211.     break;
  3212.     case 3: fprintf(js_include_file,"\
  3213. \n<!-- begin function 3 read_canvas() -->\n\
  3214. function read_canvas(){\
  3215. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3216. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3217.  var p = 0;var input_reply = new Array();\
  3218.  if( document.getElementById(\"canvas_input0\")){\
  3219.   var t = 0;\
  3220.   while(document.getElementById(\"canvas_input\"+t)){\
  3221.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3222.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3223.     p++;\
  3224.    };\
  3225.    t++;\
  3226.   };\
  3227.  };\
  3228.  if( typeof userdraw_text != 'undefined' ){\
  3229.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3230.  }\
  3231.  else\
  3232.  {\
  3233.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3234.  }\
  3235. }\
  3236. else\
  3237. {\
  3238.  if( typeof userdraw_text != 'undefined' ){\
  3239.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3240.  }\
  3241.  else\
  3242.  {\
  3243.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3244.  }\
  3245. }\
  3246. };\
  3247. this.read_canvas = read_canvas;\n\
  3248. <!-- end function 3 read_canvas() -->");
  3249.     break;
  3250.     case 4: fprintf(js_include_file,"\
  3251. \n<!-- begin function 4 read_canvas() -->\n\
  3252. function read_canvas(){\
  3253. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3254. while(userdraw_x[p]){\
  3255.  reply_x[p] = px2x(userdraw_x[p]);\
  3256.  reply_y[p] = px2y(userdraw_y[p]);\
  3257.  p++;\
  3258. };\
  3259. if(p == 0){alert(\"nothing drawn...\");return;};\
  3260. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3261.  var p = 0;var input_reply = new Array();\
  3262.  if( document.getElementById(\"canvas_input0\")){\
  3263.   var t = 0;\
  3264.   while(document.getElementById(\"canvas_input\"+t)){\
  3265.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3266.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3267.     p++;\
  3268.    };\
  3269.    t++;\
  3270.   };\
  3271.  };\
  3272.  if( typeof userdraw_text != 'undefined' ){\
  3273.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3274.  }\
  3275.  else\
  3276.  {\
  3277.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3278.  }\
  3279. }\
  3280. else\
  3281. {\
  3282.  if( typeof userdraw_text != 'undefined' ){\
  3283.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3284.  }\
  3285.  else\
  3286.  {\
  3287.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  3288.  }\
  3289. };\
  3290. };\
  3291. this.read_canvas = read_canvas;\n\
  3292. <!-- end function 4 read_canvas() -->");
  3293.     break;
  3294.     /*
  3295.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3296.         used for userdraw multiple paths
  3297.     */
  3298.     case 5: fprintf(js_include_file,"\
  3299. \n<!-- begin function 5 read_canvas() -->\n\
  3300. function read_canvas(){\
  3301. var p = 0;\
  3302. var reply = \"\";\
  3303. for(p = 0; p < userdraw_x.length;p++){\
  3304.  if(userdraw_x[p] != null ){\
  3305.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  3306.  };\
  3307. };\
  3308. if(p == 0){alert(\"nothing drawn...\");return;};\
  3309. userdraw_x = [];userdraw_y = [];\
  3310. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3311.  var p = 0;var input_reply = new Array();\
  3312.  if( document.getElementById(\"canvas_input0\")){\
  3313.   var t = 0;\
  3314.   while(document.getElementById(\"canvas_input\"+t)){\
  3315.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3316.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3317.     p++;\
  3318.    };\
  3319.    t++;\
  3320.   };\
  3321.  };\
  3322.  if( typeof userdraw_text != 'undefined' ){\
  3323.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3324.  }\
  3325.  else\
  3326.  {\
  3327.   return reply +\"\\n\"+input_reply;\
  3328.  }\
  3329. }\
  3330. else\
  3331. {\
  3332.  if( typeof userdraw_text != 'undefined' ){\
  3333.   return reply+\"\\n\"+userdraw_text;\
  3334.  }\
  3335.  else\
  3336.  {\
  3337.   return reply;\
  3338.  }\
  3339. };\
  3340. };\
  3341. this.read_canvas = rdad_canvas;\n\
  3342. <!-- end function 5 read_canvas() -->");
  3343.     break;
  3344.     /*
  3345.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3346.         used for userdraw multiple paths
  3347.     */
  3348.     case 6: fprintf(js_include_file,"\
  3349. \n<!-- begin function 6 read_canvas() -->\n\
  3350. function read_canvas(){\
  3351. var p = 0;\
  3352. var reply = \"\";\
  3353. var tmp_x = new Array();\
  3354. var tmp_y = new Array();\
  3355. for(p = 0 ; p < userdraw_x.length; p++){\
  3356.  tmp_x = userdraw_x[p];\
  3357.  tmp_y = userdraw_y[p];\
  3358.  if(tmp_x != null){\
  3359.   for(var i = 0 ; i < tmp_x.length ; i++){\
  3360.    tmp_x[i] = px2x(tmp_x[i]);\
  3361.    tmp_y[i] = px2y(tmp_y[i]);\
  3362.   };\
  3363.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  3364.  };\
  3365. };\
  3366. if(p == 0){alert(\"nothing drawn...\");return;};\
  3367. userdraw_x = [];userdraw_y = [];\
  3368. if( document.getElementById(\"canvas_input0\") ){\
  3369.  var p = 0;var input_reply = new Array();\
  3370.  if( document.getElementById(\"canvas_input0\")){\
  3371.   var t = 0;\
  3372.   while(document.getElementById(\"canvas_input\"+t)){\
  3373.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3374.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3375.     p++;\
  3376.    };\
  3377.    t++;\
  3378.   };\
  3379.  };\
  3380.  if( typeof userdraw_text != 'undefined' ){\
  3381.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3382.  }\
  3383.  else\
  3384.  {\
  3385.   return reply +\"\\n\"+input_reply;\
  3386.  }\
  3387. }\
  3388. else\
  3389. {\
  3390.  if( typeof userdraw_text != 'undefined' ){\
  3391.   return reply +\"\\n\"+userdraw_text;\
  3392.  }\
  3393.  else\
  3394.  {\
  3395.   return reply;\
  3396.  }\
  3397. };\
  3398. };\
  3399. this.read_canvas = read_canvas;\n\
  3400. <!-- end function 6 read_canvas() -->");
  3401.     break;
  3402.     case 7: fprintf(js_include_file,"\
  3403. \n<!-- begin function 7 read_canvas() -->\n\
  3404. function read_canvas(){\
  3405. var reply = new Array();\
  3406. var p = 0;\
  3407. while(userdraw_x[p]){\
  3408.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  3409.  p++;\
  3410. };\
  3411. if(p == 0){alert(\"nothing drawn...\");return;};\
  3412. if( document.getElementById(\"canvas_input0\") ){\
  3413.  var p = 0;var input_reply = new Array();\
  3414.  if( document.getElementById(\"canvas_input0\")){\
  3415.   var t = 0;\
  3416.   while(document.getElementById(\"canvas_input\"+t)){\
  3417.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3418.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3419.     p++;\
  3420.    };\
  3421.    t++;\
  3422.   };\
  3423.  };\
  3424.  if( typeof userdraw_text != 'undefined' ){\
  3425.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3426.  }\
  3427.  else\
  3428.  {\
  3429.   return reply+\"\\n\"+input_reply;\
  3430.  }\
  3431. };\
  3432. else\
  3433. {\
  3434.  if( typeof userdraw_text != 'undefined' ){\
  3435.   return reply+\"\\n\"+userdraw_text;\
  3436.  }\
  3437.  else\
  3438.  {\
  3439.   return reply;\
  3440.  }\
  3441. };\
  3442. };\
  3443. this.read_canvas = read_canvas;\n\
  3444. <!-- end function 7 read_canvas() -->");
  3445.     break;
  3446.     case 8: fprintf(js_include_file,"\
  3447. \n<!-- begin function 8 read_canvas() -->\n\
  3448. function read_canvas(){\
  3449. var reply = new Array();\
  3450. var p = 0;\
  3451. while(userdraw_x[p]){\
  3452.  reply[p] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]);\
  3453.  p++;\
  3454. };\
  3455. if(p == 0){alert(\"nothing drawn...\");return;};\
  3456. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3457.  var p = 0;var input_reply = new Array();\
  3458.  if( document.getElementById(\"canvas_input0\")){\
  3459.   var t = 0;\
  3460.   while(document.getElementById(\"canvas_input\"+t)){\
  3461.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3462.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3463.     p++;\
  3464.    };\
  3465.    t++;\
  3466.   };\
  3467.  };\
  3468.  if( typeof userdraw_text != 'undefined' ){\
  3469.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3470.  }\
  3471.  else\
  3472.  {\
  3473.   return reply +\"\\n\"+input_reply;\
  3474.  }\
  3475. }\
  3476. else\
  3477. {\
  3478.  if( typeof userdraw_text != 'undefined' ){\
  3479.   return reply +\"\\n\"+userdraw_text;\
  3480.  }\
  3481.  else\
  3482.  {\
  3483.   return reply;\
  3484.  }\
  3485. };\
  3486. };\
  3487. this.read_canvas = read_canvas;\n\
  3488. <!-- end function 8 read_canvas() -->");
  3489.     break;
  3490.     case 9: fprintf(js_include_file,"\
  3491. \n<!-- begin function 9 read_canvas() -->\n\
  3492. function read_canvas(){\
  3493. var reply = new Array();\
  3494. var p = 0;\
  3495. while(userdraw_x[p]){\
  3496.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  3497.  p++;\
  3498. };\
  3499. if(p == 0){alert(\"nothing drawn...\");return;};\
  3500. if( document.getElementById(\"canvas_input0\") ){\
  3501.  var p = 0;var input_reply = new Array();\
  3502.  if( document.getElementById(\"canvas_input0\")){\
  3503.   var t = 0;\
  3504.   while(document.getElementById(\"canvas_input\"+t)){\
  3505.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3506.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3507.     p++;\
  3508.    };\
  3509.    t++;\
  3510.   };\
  3511.  };\
  3512.  if( typeof userdraw_text != 'undefined' ){\
  3513.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3514.  }\
  3515.  else\
  3516.  {\
  3517.   return reply +\"\\n\"+input_reply;\
  3518.  }\
  3519. }\
  3520. else\
  3521. {\
  3522.  if( typeof userdraw_text != 'undefined' ){\
  3523.   return reply +\"\\n\"+userdraw_text;\
  3524.  }\
  3525.  else\
  3526.  {\
  3527.   return reply;\
  3528.  }\
  3529. };\
  3530. };\
  3531. this.read_canvas = read_canvas;\n\
  3532. <!-- end function 9 read_canvas() -->");
  3533.     break;
  3534.     case 10: fprintf(js_include_file,"\
  3535. \n<!-- begin function 10 read_canvas() -->\n\
  3536. function read_canvas(){\
  3537. var reply = new Array();\
  3538. var p = 0;\
  3539. while(userdraw_x[p]){\
  3540.  reply[p] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]) +\":\" + userdraw_radius[p];\
  3541.  p++;\
  3542. };\
  3543. if(p == 0){alert(\"nothing drawn...\");return;};\
  3544. if( document.getElementById(\"canvas_input0\") ){\
  3545.  var p = 0;var input_reply = new Array();\
  3546.  if( document.getElementById(\"canvas_input0\")){\
  3547.   var t = 0;\
  3548.   while(document.getElementById(\"canvas_input\"+t)){\
  3549.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3550.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3551.     p++;\
  3552.    };\
  3553.    t++;\
  3554.   };\
  3555.  };\
  3556.  if( typeof userdraw_text != 'undefined' ){\
  3557.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3558.  }\
  3559.  else\
  3560.  {\
  3561.   return reply +\"\\n\"+input_reply;\
  3562.  }\
  3563. }\
  3564. else\
  3565. {\
  3566.  if( typeof userdraw_text != 'undefined' ){\
  3567.   return reply +\"\\n\"+userdraw_text;\
  3568.  }\
  3569.  else\
  3570.  {\
  3571.   return reply;\
  3572.  }\
  3573. };\
  3574. };\
  3575. this.read_canvas = read_canvas;\n\
  3576. <!-- end function 10 read_canvas() -->");
  3577.     break;
  3578.     case 11: fprintf(js_include_file,"\
  3579. \n<!-- begin function 11 read_canvas() -->\n\
  3580. function read_canvas(){\
  3581. var reply = \"\";\
  3582. var p = 0;\
  3583. while(userdraw_x[p]){\
  3584.  reply = reply + px2x(userdraw_x[p]) +\",\" + px2y(userdraw_y[p]) +\",\" + px2x(userdraw_x[p+1]) +\",\" + px2y(userdraw_y[p+1]) +\"\\n\" ;\
  3585.  p = p+2;\
  3586. };\
  3587. if(p == 0){alert(\"nothing drawn...\");return;};\
  3588. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3589.  var p = 0;var input_reply = new Array();\
  3590.  if( document.getElementById(\"canvas_input0\")){\
  3591.   var t = 0;\
  3592.   while(document.getElementById(\"canvas_input\"+t)){\
  3593.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3594.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3595.     p++;\
  3596.    };\
  3597.    t++;\
  3598.   };\
  3599.  };\
  3600.  if( typeof userdraw_text != 'undefined' ){\
  3601.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3602.  }\
  3603.  else\
  3604.  {\
  3605.   return reply +\"\\n\"+input_reply;\
  3606.  }\
  3607. }\
  3608. else\
  3609. {\
  3610.  if( typeof userdraw_text != 'undefined' ){\
  3611.   return reply +\"\\n\"+userdraw_text;\
  3612.  }\
  3613.  else\
  3614.  {\
  3615.   return reply;\
  3616.  }\
  3617. };\
  3618. };\
  3619. this.read_canvas = read_canvas;\n\
  3620. <!-- end function 11 read_canvas() -->");
  3621.     break;
  3622.     case 12: fprintf(js_include_file,"\
  3623. \n<!-- begin function 12 read_canvas() -->\n\
  3624. function read_canvas(){\
  3625. var reply = \"\";\
  3626. var p = 0;\
  3627. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  3628.  if(userdraw_x[p] != null){\
  3629.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  3630.  };\
  3631. };\
  3632. if(p == 0){alert(\"nothing drawn...\");return;};\
  3633. if( document.getElementById(\"canvas_input0\") ){\
  3634.  var p = 0;var input_reply = new Array();\
  3635.  if( document.getElementById(\"canvas_input0\")){\
  3636.   var t = 0;\
  3637.   while(document.getElementById(\"canvas_input\"+t)){\
  3638.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3639.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3640.     p++;\
  3641.    };\
  3642.    t++;\
  3643.   };\
  3644.  };\
  3645.  if( typeof userdraw_text != 'undefined' ){\
  3646.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3647.  }\
  3648.  else\
  3649.  {\
  3650.   return reply +\"\\n\"+input_reply;\
  3651.  }\
  3652. }\
  3653. else\
  3654. {\
  3655.  if( typeof userdraw_text != 'undefined' ){\
  3656.   return reply +\"\\n\"+userdraw_text\
  3657.  }\
  3658.  else\
  3659.  {\
  3660.   return reply;\
  3661.  }\
  3662. };\
  3663. };\
  3664. this.read_canvas = read_canvas;\n\
  3665. <!-- end function 12 read_canvas() -->");
  3666.     break;
  3667.     case 13: fprintf(js_include_file,"\
  3668. \n<!-- begin function 13 read_canvas() -->\n\
  3669. function read_canvas(){\
  3670. var reply = new Array();\
  3671. var p = 0;var i = 0;\
  3672. while(userdraw_x[p]){\
  3673.  reply[i] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]) +\":\" + px2x(userdraw_x[p+1]) +\":\" + px2y(userdraw_y[p+1]);\
  3674.  p = p+2;i++;\
  3675. };\
  3676. if(p == 0){alert(\"nothing drawn...\");return;};\
  3677. if( document.getElementById(\"canvas_input0\") ){\
  3678.  var p = 0;var input_reply = new Array();\
  3679.  if( document.getElementById(\"canvas_input0\")){\
  3680.   var t = 0;\
  3681.   while(document.getElementById(\"canvas_input\"+t)){\
  3682.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3683.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3684.     p++;\
  3685.    };\
  3686.    t++;\
  3687.   };\
  3688.  };\
  3689.  if( typeof userdraw_text != 'undefined' ){\
  3690.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3691.  }\
  3692.  else\
  3693.  {\
  3694.   return reply +\"\\n\"+input_reply;\
  3695.  }\
  3696. }\
  3697. else\
  3698. {\
  3699.  if( typeof userdraw_text != 'undefined' ){\
  3700.   return reply +\"\\n\"+userdraw_text\
  3701.  }\
  3702.  else\
  3703.  {\
  3704.   return reply;\
  3705.  }\
  3706. };\
  3707. };\
  3708. this.read_canvas = read_canvas;\n\
  3709. <!-- end function 13 read_canvas() -->");
  3710.     break;
  3711.     case 14: fprintf(js_include_file,"\
  3712. \n<!-- begin function 14 read_canvas() -->\n\
  3713. function read_canvas(){\
  3714. var reply = new Array();\
  3715. var p = 0;var i = 0;\
  3716. while(userdraw_x[p]){\
  3717.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  3718.  p = p+2;i++;\
  3719. };\
  3720. if(p == 0){alert(\"nothing drawn...\");return;};\
  3721. if( document.getElementById(\"canvas_input0\") ){\
  3722.  var p = 0;var input_reply = new Array();\
  3723.  if( document.getElementById(\"canvas_input0\")){\
  3724.   var t = 0;\
  3725.   while(document.getElementById(\"canvas_input\"+t)){\
  3726.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3727.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3728.     p++;\
  3729.    };\
  3730.    t++;\
  3731.   };\
  3732.  };\
  3733.  if( typeof userdraw_text != 'undefined' ){\
  3734.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3735.  }\
  3736.  else\
  3737.  {\
  3738.   return reply +\"\\n\"+input_reply;\
  3739.  }\
  3740. }\
  3741. else\
  3742. {\
  3743.  if( typeof userdraw_text != 'undefined' ){\
  3744.   return reply +\"\\n\"+userdraw_text;\
  3745.  }\
  3746.  else\
  3747.  {\
  3748.   return reply;\
  3749.  }\
  3750. };\
  3751. };\
  3752. this.read_canvas = read_canvas;\n\
  3753. <!-- end function 14 read_canvas() -->");
  3754.     break;
  3755.     case 15: fprintf(js_include_file,"\
  3756. \n<!-- begin function 15  read_canvas() -->\n\
  3757. function read_canvas(){\
  3758. var input_reply = new Array();\
  3759. var p = 0;\
  3760. if( document.getElementById(\"canvas_input0\")){\
  3761.  var t = 0;\
  3762.  while(document.getElementById(\"canvas_input\"+t)){\
  3763.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3764.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3765.    p++;\
  3766.   };\
  3767.   t++;\
  3768.  };\
  3769. };\
  3770. if( typeof userdraw_text != 'undefined' ){\
  3771.   return input_reply +\"\\n\"+userdraw_text;\
  3772. }\
  3773. else\
  3774. {\
  3775.  return input_reply;\
  3776. };\
  3777. };\
  3778. this.read_canvas = read_canvas;\n\
  3779. <!-- end function 15 read_canvas() -->");
  3780.     break;
  3781.     case 16: fprintf(js_include_file,"\
  3782. \n<!-- begin function 16 read_mathml() -->\n\
  3783. function read_mathml(){\
  3784. var reply = new Array();\
  3785. var p = 0;\
  3786. if( document.getElementById(\"mathml0\")){\
  3787.  while(document.getElementById(\"mathml\"+p)){\
  3788.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  3789.   p++;\
  3790.  };\
  3791. };\
  3792. return reply;\
  3793. };\
  3794. this.read_mathml = read_mathml;\n\
  3795. <!-- end function 16 read_mathml() -->");
  3796.     break;
  3797.     case 17:  fprintf(js_include_file,"\
  3798. \n<!-- begin function 17 read_canvas() -->\n\
  3799. function read_canvas(){\
  3800. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  3801. return userdraw_text;\
  3802. };\
  3803. this.read_canvas = read_canvas;\n\
  3804. <!-- end function 17 read_canvas() -->");
  3805.     break;
  3806.     case 18: fprintf(js_include_file,"\
  3807. \n<!-- begin function 18 read_canvas() -->\n\
  3808. function read_canvas(){\
  3809. var p = 0;\
  3810. var reply = new Array();\
  3811. var name;\
  3812. var t = true;\
  3813. while(t){\
  3814.  try{ name = eval('clocks'+p);\
  3815.  reply[p] = parseInt((name.H+name.M/60+name.S/3600)%%12)+\":\"+parseInt((name.M + name.S/60)%%60)+\":\"+(name.S)%%60;p++}catch(e){t=false;};\
  3816. };\
  3817. if( p == 0){alert(\"clock(s) not modified...\");return;}\
  3818. return reply;\
  3819. };\
  3820. this.read_canvas = read_canvas;\n\
  3821. <!-- end function 18 read_canvas() -->");
  3822.     break;
  3823.     case 19: fprintf(js_include_file,"\
  3824. \n<!-- begin function 19 read_canvas() -->\n\
  3825. function read_canvas(){\
  3826. return reply[0];\
  3827. };\
  3828. this.read_canvas = read_canvas;\n\
  3829. <!-- end function 19 read_canvas() -->");
  3830.     case 20: fprintf(js_include_file,"\
  3831. \n<!-- begin function 20 read_canvas() -->\n\
  3832. function read_canvas(){\
  3833. var len  = ext_drag_images.length;\
  3834. var reply = new Array(len);\
  3835. for(var p = 0 ; p < len ; p++){\
  3836.    var img = ext_drag_images[p];\
  3837.    reply[p] = px2x(img[6])+\":\"+px2y(img[7]);\
  3838. };\
  3839. return reply;\
  3840. };\
  3841. this.read_canvas = read_canvas;\n\
  3842. <!-- end function 20 read_canvas() -->");
  3843.     break;
  3844.     case 21: fprintf(js_include_file,"\
  3845. \n<!-- begin function 21 read_canvas() -->\n\
  3846. function read_canvas(){\
  3847. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3848. var reply_coord = new Array();var p = 0;\
  3849. while(userdraw_x[p]){\
  3850.  reply_coord[p] = \"(\"+px2x(userdraw_x[p])+\":\"+px2y(userdraw_y[p])+\")\";\
  3851.  p++;\
  3852. };\
  3853. if(p == 0){alert(\"nothing drawn...\");return;};\
  3854. if( document.getElementById(\"canvas_input0\") ){\
  3855.  var p = 0;var input_reply = new Array();\
  3856.  if( document.getElementById(\"canvas_input0\")){\
  3857.   var t = 0;\
  3858.   while(document.getElementById(\"canvas_input\"+t)){\
  3859.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3860.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3861.     p++;\
  3862.    };\
  3863.    t++;\
  3864.   };\
  3865.  };\
  3866.  if( typeof userdraw_text != 'undefined' ){\
  3867.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3868.  }\
  3869.  else\
  3870.  {\
  3871.   return reply_coord+\"\\n\"+input_reply;\
  3872.  }\
  3873. }\
  3874. else\
  3875. {\
  3876.  if( typeof userdraw_text != 'undefined' ){\
  3877.   return reply_coord+\"\\n\"+userdraw_text;\
  3878.  }\
  3879.  else\
  3880.  {\
  3881.   return reply_coord;\
  3882.  };\
  3883. };\
  3884. };\
  3885. this.read_canvas = read_canvas;\n\
  3886. <!-- end function 21 read_canvas() -->");
  3887.     break;
  3888.     case 22: fprintf(js_include_file,"\
  3889. \n<!-- begin function 22 read_canvas() -->\n\
  3890. function read_canvas(){\
  3891. var reply = new Array();\
  3892. var p = 0;\
  3893. var idx = 0;\
  3894. while(userdraw_x[p]){\
  3895.  reply[idx] = px2x(userdraw_x[p]);\
  3896.  idx++;\
  3897.  reply[idx] = px2y(userdraw_y[p]);\
  3898.  idx++;p++;\
  3899. };\
  3900. if(p == 0){alert(\"nothing drawn...\");return;};\
  3901. if( document.getElementById(\"canvas_input0\") ){\
  3902.  var p = 0;var input_reply = new Array();\
  3903.  if( document.getElementById(\"canvas_input0\")){\
  3904.   var t = 0;\
  3905.   while(document.getElementById(\"canvas_input\"+t)){\
  3906.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3907.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3908.     p++;\
  3909.    };\
  3910.    t++;\
  3911.   };\
  3912.  };\
  3913.  if( typeof userdraw_text != 'undefined' ){\
  3914.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3915.  }\
  3916.  else\
  3917.  {\
  3918.   return reply +\"\\n\"+input_reply;\
  3919.  }\
  3920. }\
  3921. else\
  3922. {\
  3923.  if( typeof userdraw_text != 'undefined' ){\
  3924.   return reply +\"\\n\"+userdraw_text;\
  3925.  }\
  3926.  else\
  3927.  {\
  3928.   return reply;\
  3929.  }\
  3930. };\
  3931. };\
  3932. this.read_canvas = read_canvas;\n\
  3933. <!-- end function 22 read_canvas() -->");
  3934.     break;
  3935.     case 23: fprintf(js_include_file,"\
  3936. \n<!-- begin function 23 read_canvas() default 5 px marge -->\n\
  3937. function read_canvas(){\
  3938. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  3939. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3940. var lu = userdraw_x.length;\
  3941. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  3942. var marge = 5;\
  3943. reply_x[p] = px2x(userdraw_x[0]);reply_y[p] = px2y(userdraw_y[0]);p++;\
  3944. for(var i = 0; i < lu - 1 ; i++ ){\
  3945.  if( (userdraw_x[i] < (userdraw_x[i+1] + marge)) && (userdraw_x[i] > (userdraw_x[i+1] - marge)) ){\
  3946.   if( (userdraw_y[i] < (userdraw_y[i+1] + marge)) && (userdraw_y[i] > (userdraw_y[i+1] - marge)) ){\
  3947.    reply_x[p] = px2x(userdraw_x[i]);reply_y[p] = px2y(userdraw_y[i]);\
  3948.    if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  3949.    p++;\
  3950.   };\
  3951.  };\
  3952. };\
  3953. if( document.getElementById(\"canvas_input0\")){\
  3954.  var p = 0;var input_reply = new Array();\
  3955.  if( document.getElementById(\"canvas_input0\")){\
  3956.   var t = 0;\
  3957.   while(document.getElementById(\"canvas_input\"+t)){\
  3958.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3959.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3960.     p++;\
  3961.    };\
  3962.    t++;\
  3963.   };\
  3964.  };\
  3965.  if( typeof userdraw_text != 'undefined' ){\
  3966.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3967.  }\
  3968.  else\
  3969.  {\
  3970.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3971.  }\
  3972. }\
  3973. else\
  3974. {\
  3975.  if( typeof userdraw_text != 'undefined' ){\
  3976.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3977.  }\
  3978.  else\
  3979.  {\
  3980.   return reply_x+\"\\n\"+reply_y;\
  3981.  };\
  3982. };\
  3983. };\
  3984. this.read_canvas = read_canvas;\n\
  3985. <!-- end function 23 read_canvas() -->");
  3986.     break;
  3987.  
  3988.     default: canvas_error("hmmm unknown replyformat...");break;
  3989. }
  3990.  return;
  3991. }
  3992.  
  3993.  
  3994. /*
  3995.  add drawfunction :
  3996.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  3997.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  3998.  - grid / mathml
  3999.  - will not scale or zoom in
  4000.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4001.  - is printed directly into 'js_include_file'
  4002. */
  4003.  
  4004. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4005. int i;
  4006. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4007.  if( js_functions[i] == 1){
  4008.     switch(i){
  4009.     case DRAG_EXTERNAL_IMAGE:
  4010. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4011. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4012. var external_ctx = external_canvas.getContext(\"2d\");\
  4013. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4014. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4015. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4016. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4017. var selected_image = null;\
  4018. var ext_image_cnt = 0;\
  4019. var ext_drag_images = new Array();\
  4020. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4021. ext_image_cnt = idx;\
  4022. var image = new Image();\
  4023. image.src = URL;\
  4024. image.onload = function(){\
  4025.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4026.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4027.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4028.  img = new Array(10);\
  4029.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4030.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4031.  ext_drag_images[idx] = img;\
  4032.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4033. };\
  4034. };\
  4035. function dragstop(evt){\
  4036. selected_image = null;return;\
  4037. };\
  4038. function dragxy(evt){\
  4039. if( selected_image != null ){\
  4040.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4041.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4042.  var s_img = ext_drag_images[selected_image];\
  4043.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4044.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4045.  ext_drag_images[selected_image] = s_img;\
  4046.  external_ctx.clearRect(0,0,xsize,ysize);\
  4047.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4048.   var img = ext_drag_images[i];\
  4049.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4050.  };\
  4051. };\
  4052. };\
  4053. function setxy(evt){\
  4054. if( ! selected_image && evt.which == 1 ){\
  4055.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4056.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4057.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4058.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4059.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4060.   var img = ext_drag_images[p];\
  4061.   if( img[0] == 1 ){\
  4062.    var w = img.width;\
  4063.    var h = img.height;\
  4064.    if( xm > img[6] && xm < img[6] + img[4]){\
  4065.     if( ym > img[7] && ym < img[7] + img[5]){\
  4066.      img[6] = xm;\
  4067.      img[7] = ym;\
  4068.      ext_drag_images[p] = img;\
  4069.      selected_image = p;\
  4070.      dragxy(evt);\
  4071.     };\
  4072.    };\
  4073.   };\
  4074.  };\
  4075. }\
  4076. else\
  4077. {\
  4078.  selected_image = null;\
  4079. };\
  4080. };",canvas_root_id);
  4081.     break;
  4082.  
  4083.     case DRAW_EXTERNAL_IMAGE:
  4084. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4085. draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4086. var image = new Image();\
  4087. image.src = URL;\
  4088. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4089. image.onload = function(){\
  4090.  if( x0 < 1 ){ x0 = 0; };\
  4091.  if( y0 < 1 ){ y0 = 0; };\
  4092.  if( sx < 1 ){ sx = 0; };\
  4093.  if( sy < 1 ){ sy = 0; };\
  4094.  if( width < 1 ){ width = image.width;};\
  4095.  if( height < 1 ){ height = image.height;};\
  4096.  if( swidth < 1 ){ swidth = image.width;};\
  4097.  if( sheight < 1 ){ sheight = image.height;};\
  4098.  var ml = x0 - sx;\
  4099.  var mh = y0 - sy;\
  4100.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4101.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4102.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4103.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4104.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4105. };\
  4106. };",canvas_root_id);    
  4107.     break;
  4108.    
  4109.     case DRAW_ZOOM_BUTTONS: /* 6 rectangles 15x15 px  forbidden zone for drawing : y < ysize - 15*/
  4110. fprintf(js_include_file,"\n<!-- draw zoom buttons -->\n\
  4111. draw_zoom_buttons = function(canvas_type,color,opacity){\
  4112. var obj;\
  4113. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4114.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4115. }\
  4116. else\
  4117. {\
  4118.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4119. };\
  4120. var ctx = obj.getContext(\"2d\");\
  4121. ctx.font =\"18px Ariel\";\
  4122. ctx.textAlign = \"right\";\
  4123. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4124. ctx.fillText(\"+\",xsize,ysize);\
  4125. ctx.fillText(\"\\u2212\",xsize - 15,ysize);\
  4126. ctx.fillText(\"\\u2192\",xsize - 30,ysize-2);\
  4127. ctx.fillText(\"\\u2190\",xsize - 45,ysize-2);\
  4128. ctx.fillText(\"\\u2191\",xsize - 60,ysize-2);\
  4129. ctx.fillText(\"\\u2193\",xsize - 75,ysize-2);\
  4130. ctx.fillText(\"\\u00D7\",xsize - 90,ysize-2);\
  4131. ctx.stroke();\
  4132. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4133.    
  4134.     break;
  4135.     case DRAW_GRIDFILL:/* not used for userdraw */
  4136. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4137. draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4138. var obj;\
  4139. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4140.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4141. }\
  4142. else\
  4143. {\
  4144.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4145. };\
  4146. var ctx = obj.getContext(\"2d\");\
  4147. var x,y;\
  4148. ctx.save();\
  4149. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4150. snap_x = dx;snap_y = dy;\
  4151. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4152.    ctx.moveTo(x,y0);\
  4153.    ctx.lineTo(x,ysize);\
  4154. };\
  4155. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4156.    ctx.moveTo(x0,y);\
  4157.    ctx.lineTo(xsize,y);\
  4158. };\
  4159. ctx.stroke();\
  4160. ctx.restore();\
  4161. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4162.     break;
  4163.    
  4164.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4165. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4166. draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4167. var obj;\
  4168. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4169.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4170. }\
  4171. else\
  4172. {\
  4173.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4174. };\
  4175. var ctx = obj.getContext(\"2d\");\
  4176. ctx.save();\
  4177. var img = new Image();\
  4178. img.src = URL;\
  4179. img.onload = function(){\
  4180.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4181.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4182.  }\
  4183.  else\
  4184.  {\
  4185.    var repeat = \"repeat\";\
  4186.    if(img.width > xsize - x0){\
  4187.         repeat = \"repeat-y\";\
  4188.    }\
  4189.    else\
  4190.    {\
  4191.     if( img.height > ysize -x0 ){\
  4192.      repeat = \"repeat-x\";\
  4193.     }\
  4194.    }\
  4195.    var pattern = ctx.createPattern(img,repeat);\
  4196.    ctx.rect(x0,y0,xsize,ysize);\
  4197.    ctx.fillStyle = pattern;\
  4198.  }\
  4199.  ctx.fill();\
  4200. };\
  4201. ctx.restore();\
  4202. return;\
  4203. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4204.     break;
  4205.    
  4206.     case DRAW_DOTFILL:/* not  used for userdraw */
  4207. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4208. draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4209. var obj;\
  4210. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4211.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4212. }\
  4213. else\
  4214. {\
  4215.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4216. };\
  4217. var ctx = obj.getContext(\"2d\");\
  4218. var x,y;\
  4219. ctx.closePath();\
  4220. ctx.save();\
  4221. snap_x = dx;snap_y = dy;\
  4222. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4223. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4224.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4225.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4226.   ctx.closePath();\
  4227.  }\
  4228. }\
  4229. ctx.fill();\
  4230. ctx.restore();\
  4231. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4232.     break;
  4233.  
  4234.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4235. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4236. draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4237.  var obj;\
  4238. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4239.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4240. }\
  4241. else\
  4242. {\
  4243.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4244. };\
  4245. var ctx = obj.getContext(\"2d\");\
  4246. var x;\
  4247. var y;\
  4248. ctx.save();\
  4249. ctx.lineWidth = linewidth;\
  4250. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4251. y = ysize;\
  4252. for( x = x0 ; x < xsize ; x = x + dx ){\
  4253.  ctx.moveTo(x,y0);\
  4254.  ctx.lineTo(xsize,y);\
  4255.  y = y - dy;\
  4256. };\
  4257. y = y0;\
  4258. for( x = xsize ; x > 0 ; x = x - dx){\
  4259.  ctx.moveTo(x,ysize);\
  4260.  ctx.lineTo(x0,y);\
  4261.  y = y + dy;\
  4262. };\
  4263. x = x0;\
  4264. for( y = y0 ; y < ysize ; y = y + dy ){\
  4265.  ctx.moveTo(xsize,y);\
  4266.  ctx.lineTo(x,ysize);\
  4267.  x = x + dx;\
  4268. };\
  4269. x = xsize;\
  4270. for( y = ysize ; y > y0 ; y = y - dy ){\
  4271.  ctx.moveTo(x,y0);\
  4272.  ctx.lineTo(x0,y);\
  4273.  x = x - dx;\
  4274. };\
  4275. ctx.stroke();\
  4276. ctx.restore();\
  4277. return;\
  4278. }",canvas_root_id,canvas_root_id,canvas_root_id);
  4279.     break;
  4280.    
  4281.     case DRAW_HATCHFILL:/* not used for userdraw */
  4282. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4283. draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4284.  var obj;\
  4285. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4286.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4287. }\
  4288. else\
  4289. {\
  4290.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4291. };\
  4292. var ctx = obj.getContext(\"2d\");\
  4293. var x;\
  4294. var y;\
  4295. ctx.save();\
  4296. ctx.lineWidth = linewidth;\
  4297. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4298. y = ysize;\
  4299. for( x = x0 ; x < xsize ; x = x + dx ){\
  4300.  ctx.moveTo(x,y0);\
  4301.  ctx.lineTo(xsize,y);\
  4302.  y = y - dy;\
  4303. };\
  4304. y = y0;\
  4305. for( x = xsize ; x >= dx ; x = x - dx){\
  4306.  ctx.moveTo(x,ysize);\
  4307.  ctx.lineTo(x0,y);\
  4308.  y = y + dy;\
  4309. };\
  4310. ctx.stroke();\
  4311. ctx.restore();\
  4312. return;\
  4313. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4314.     break;
  4315.     case DRAW_CIRCLES:/*  used for userdraw */
  4316. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  4317. 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_translate,vector){\
  4318. ctx.save();\
  4319. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4320. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4321. ctx.lineWidth = line_width;\
  4322. for(var p = 0 ; p < x_points.length ; p++ ){\
  4323.  ctx.beginPath();\
  4324.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  4325.  ctx.closePath();\
  4326.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4327.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4328.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4329.  ctx.stroke();\
  4330. }\
  4331. ctx.restore();\
  4332. return;\
  4333. };");
  4334.     break;
  4335.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  4336. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  4337. draw_polyline = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4338. ctx.save();\
  4339. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4340. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4341. ctx.lineWidth = line_width;\
  4342. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4343. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4344. ctx.clearRect(0,0,xsize,ysize);\
  4345. ctx.beginPath();\
  4346. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  4347.  ctx.moveTo(x_points[p],y_points[p]);\
  4348.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4349. }\
  4350. ctx.closePath();\
  4351. ctx.stroke();\
  4352. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4353. for(var p = 0 ; p < x_points.length ; p++ ){\
  4354.  ctx.beginPath();\
  4355.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  4356.  ctx.closePath();ctx.fill();ctx.stroke();\
  4357. };\
  4358. ctx.restore();\
  4359. return;\
  4360. };");
  4361.     break;
  4362.    
  4363.     case DRAW_SEGMENTS:/*  used for userdraw */
  4364. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  4365. draw_segments = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4366. ctx.save();\
  4367. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4368. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4369. ctx.lineWidth = line_width;\
  4370. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4371. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4372. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4373.  ctx.beginPath();\
  4374.  ctx.moveTo(x_points[p],y_points[p]);\
  4375.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4376.  ctx.closePath();\
  4377.  ctx.stroke();\
  4378.  }\
  4379.  ctx.restore();\
  4380.  return;\
  4381. };");
  4382.     break;
  4383.    
  4384.     case DRAW_LINES:/*  used for userdraw */
  4385. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  4386. function calc_line(x1,x2,y1,y2){\
  4387. var marge = 2;\
  4388. if(x1 < x2+marge && x1>x2-marge){\
  4389.  return [x1,0,x1,ysize];\
  4390. };\
  4391. if(y1 < y2+marge && y1>y2-marge){\
  4392.  return [0,y1,xsize,y1];\
  4393. };\
  4394. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  4395. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  4396. return [0,Y1,xsize,Y2];\
  4397. };\
  4398. draw_lines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4399. ctx.save();\
  4400. var line = new Array(4);\
  4401. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4402. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4403. ctx.lineWidth = line_width;\
  4404. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4405. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4406. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4407.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  4408.  ctx.beginPath();\
  4409.  ctx.moveTo(line[0],line[1]);\
  4410.  ctx.lineTo(line[2],line[3]);\
  4411.  ctx.closePath();\
  4412.  ctx.stroke();\
  4413.  }\
  4414.  ctx.restore();\
  4415.  return;\
  4416. };");
  4417.     break;
  4418.  
  4419.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  4420. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  4421. draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_translate,vector){\
  4422. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4423. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4424. ctx.lineWidth = line_width;\
  4425. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4426. var x1,x2,y1,y2;\
  4427. for(var p = 0 ; p < x_points.length ; p++ ){\
  4428.  x1 = x_points[p] - crosshair_size;\
  4429.  x2 = x_points[p] + crosshair_size;\
  4430.  y1 = y_points[p] - crosshair_size;\
  4431.  y2 = y_points[p] + crosshair_size;\
  4432.  ctx.beginPath();\
  4433.  ctx.moveTo(x1,y1);\
  4434.  ctx.lineTo(x2,y2);\
  4435.  ctx.closePath();\
  4436.  ctx.stroke();\
  4437.  ctx.beginPath();\
  4438.  ctx.moveTo(x2,y1);\
  4439.  ctx.lineTo(x1,y2);\
  4440.  ctx.closePath();\
  4441.  ctx.stroke();\
  4442. }\
  4443. ctx.restore();\
  4444.  return;\
  4445. };");
  4446.     break;
  4447.  
  4448.     case DRAW_RECTS:/*  used for userdraw */
  4449. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  4450. 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_translate,vector){\
  4451. ctx.save();\
  4452. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4453. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4454. ctx.lineWidth = line_width;\
  4455. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  4456. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  4457. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  4458.  ctx.beginPath();\
  4459.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  4460.  ctx.closePath();\
  4461.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4462.  ctx.stroke();\
  4463. };\
  4464. ctx.restore();\
  4465. return;\
  4466. };");
  4467.     break;
  4468.  
  4469.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  4470. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  4471. 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_translate,vector){\
  4472. ctx.save();\
  4473. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4474. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4475. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4476. var x,y,w,h,r;\
  4477. for(var p = 0; p < x_points.length; p = p+2){\
  4478.  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);\
  4479.  ctx.beginPath();ctx.moveTo(x + r, y);\
  4480.  ctx.lineTo(x + w - r, y);\
  4481.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  4482.  ctx.lineTo(x + w, y + h - r);\
  4483.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  4484.  ctx.lineTo(x + r, y + h);\
  4485.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  4486.  ctx.lineTo(x, y + r);\
  4487.  ctx.quadraticCurveTo(x, y, x + r, y);\
  4488.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  4489.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4490.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  4491.  ctx.stroke();\
  4492. }\
  4493. ctx.restore();\
  4494. };");
  4495.     break;
  4496.  
  4497.     case DRAW_ELLIPSES:/* not  used for userdraw */
  4498. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  4499. 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_translate,vector){\
  4500. var obj;\
  4501. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4502.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4503. }\
  4504. else\
  4505. {\
  4506.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4507. };\
  4508. var ctx = obj.getContext(\"2d\");\
  4509. ctx.save();\
  4510. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4511. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4512. var cx,cy,ry,rx;\
  4513. ctx.lineWidth = line_width;\
  4514. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  4515. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4516. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4517. for(var p=0;p< x_points.length;p = p+2){\
  4518.  ctx.beginPath();\
  4519.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  4520.  ctx.translate(cx - rx, cy - ry);\
  4521.  ctx.scale(rx, ry);\
  4522.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  4523.  if( use_filled == 1 ){ctx.fill();}\
  4524.  ctx.stroke();\
  4525. };\
  4526. ctx.restore();\
  4527. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4528.     break;
  4529.  
  4530.     case DRAW_PATHS: /*  used for userdraw */
  4531. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  4532. 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_translate,vector){\
  4533. ctx.save();\
  4534. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4535. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4536. ctx.lineWidth = line_width;\
  4537. ctx.lineJoin = \"round\";\
  4538. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4539. ctx.beginPath();\
  4540. ctx.moveTo(x_points[0],y_points[0]);\
  4541. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  4542. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  4543. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4544. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4545. ctx.stroke();\
  4546. ctx.restore();\
  4547. return;\
  4548. };");
  4549.    
  4550.     break;
  4551.     case DRAW_ARROWS:/*  used for userdraw */
  4552. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  4553. 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_translate,vector){\
  4554. ctx.save();\
  4555. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4556. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4557. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4558. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4559. ctx.lineWidth = line_width;\
  4560. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4561. ctx.lineCap = \"round\";\
  4562. ctx.save();\
  4563. var x1,y1,x2,y2,dx,dy,len;\
  4564. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  4565.   ctx.restore();ctx.save();\
  4566.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  4567.   len = Math.sqrt(dx*dx+dy*dy);\
  4568.   ctx.translate(x2,y2);\
  4569.   ctx.rotate(Math.atan2(dy,dx));\
  4570.   ctx.lineCap = \"round\";\
  4571.   ctx.beginPath();\
  4572.   ctx.moveTo(0,0);\
  4573.   ctx.lineTo(-len,0);\
  4574.   ctx.closePath();\
  4575.   ctx.stroke();\
  4576.   ctx.beginPath();\
  4577.   ctx.moveTo(0,0);\
  4578.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  4579.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  4580.   ctx.closePath();\
  4581.   ctx.fill();\
  4582.   if( type == 2 ){\
  4583.     ctx.restore();\
  4584.     ctx.save();\
  4585.     ctx.translate(x1,y1);\
  4586.     ctx.rotate(Math.atan2(-dy,-dx));\
  4587.     ctx.beginPath();\
  4588.     ctx.moveTo(0,0);\
  4589.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  4590.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  4591.     ctx.closePath();\
  4592.     ctx.stroke();\
  4593.     ctx.fill();\
  4594.   }\
  4595.  }\
  4596.  ctx.restore();\
  4597.  return;\
  4598. };");
  4599.     break;
  4600.  
  4601.     case DRAW_VIDEO:/* not  used for userdraw */
  4602. fprintf(js_include_file,"\n<!-- draw video -->\n\
  4603. draw_video = function(canvas_root_id,x,y,w,h,URL){\
  4604. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4605. var video_div = document.createElement(\"div\");\
  4606. canvas_div.appendChild(video_div);\
  4607. video_div.style.position = \"absolute\";\
  4608. video_div.style.left = x+\"px\";\
  4609. video_div.style.top = y+\"px\";\
  4610. video_div.style.width = w+\"px\";\
  4611. video_div.style.height = h+\"px\";\
  4612. var video = document.createElement(\"video\");\
  4613. video_div.appendChild(video);\
  4614. video.style.width = w+\"px\";\
  4615. video.style.height = h+\"px\";\
  4616. video.autobuffer = true;\
  4617. video.controls = true;video.autoplay = false;\
  4618. var src = document.createElement(\"source\");\
  4619. src.type = \"video/mp4\";\
  4620. src.src = URL;\
  4621. video.appendChild(src);\
  4622. video.load();\
  4623. return;\
  4624. };");    
  4625.     break;
  4626.    
  4627.     case DRAW_AUDIO:/* not used for userdraw */
  4628. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  4629. draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  4630. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4631. var audio_div = document.createElement(\"div\");\
  4632. canvas_div.appendChild(audio_div);\
  4633. audio_div.style.position = \"absolute\";\
  4634. audio_div.style.left = x+\"px\";\
  4635. audio_div.style.top = y+\"px\";\
  4636. audio_div.style.width = w+\"px\";\
  4637. audio_div.style.height = h+\"px\";\
  4638. var audio = document.createElement(\"audio\");\
  4639. audio_div.appendChild(audio);\
  4640. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  4641. audio.autobuffer = true;\
  4642. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  4643. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  4644. var src1 = document.createElement(\"source\");\
  4645. src1.type = \"audio/ogg\";\
  4646. src1.src = URL1;\
  4647. audio.appendChild(src1);\
  4648. var src2 = document.createElement(\"source\");\
  4649. src2.type = \"audio/mpeg\";\
  4650. src2.src = URL2;\
  4651. audio.appendChild(src2);\
  4652. audio.load();\
  4653. return;\
  4654. };");
  4655.     break;
  4656.    
  4657.     case DRAW_HTTP:/* not  used for userdraw */
  4658. fprintf(js_include_file,"\n<!-- draw http -->\n\
  4659. draw_http = function(canvas_root_id,x,y,w,h,URL){\
  4660. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4661. var http_div = document.createElement(\"div\");\
  4662. var iframe = document.createElement(\"iframe\");\
  4663. canvas_div.appendChild(http_div);\
  4664. http_div.appendChild(iframe);\
  4665. iframe.src = URL;\
  4666. iframe.setAttribute(\"width\",w);\
  4667. iframe.setAttribute(\"height\",h);\
  4668. return;\
  4669. };");
  4670.     break;
  4671.    
  4672.     case DRAW_XML:
  4673. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  4674. draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  4675. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4676. var xml_div = document.createElement(\"div\");\
  4677. canvas_div.appendChild(xml_div);\
  4678. xml_div.innerHTML = mathml;\
  4679. if(onclick != 0){\
  4680.  xml_div.onclick = function(){\
  4681.   reply[0] = onclick;\
  4682.   alert(\"send \"+onclick+\" ?\");\
  4683.  };\
  4684. };\
  4685. xml_div.style.position = \"absolute\";\
  4686. xml_div.style.left = x+\"px\";\
  4687. xml_div.style.top = y+\"px\";\
  4688. xml_div.style.width = w+\"px\";\
  4689. xml_div.style.height = h+\"px\";\
  4690. return;\
  4691. };"
  4692. );
  4693.     break;
  4694.     case DRAW_SGRAPH:
  4695. /*
  4696.  xstart = given
  4697.  ystart = given
  4698.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  4699. */
  4700. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  4701. draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  4702. 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);};\
  4703. var ctx = obj.getContext(\"2d\");\
  4704. ctx.font = fontfamily;\
  4705. var minor_opacity = 0.8*opacity;\
  4706. ctx.clearRect(0,0,xsize,ysize);\
  4707. var d_x =  1.8*font_size;\
  4708. var d_y =  ctx.measureText(\"+ymax+\").width;\
  4709. var dx = xsize / (xmax - xmin);\
  4710. var dy = ysize / (ymax - ymin);\
  4711. var zero_x = d_y + dx;\
  4712. var zero_y = ysize - dy - d_x;\
  4713. var snor_x;\
  4714. if( xstart != xmin){\
  4715.  snor_x = 0.1*xsize;\
  4716. }\
  4717. else\
  4718. {\
  4719.  snor_x = 0;\
  4720.  xstart = xmin;\
  4721. };\
  4722. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4723. ctx.lineWidth = 2;\
  4724. ctx.beginPath();\
  4725. ctx.moveTo(xsize,zero_y);\
  4726. ctx.lineTo(zero_x,zero_y);\
  4727. ctx.lineTo(zero_x,0);\
  4728. ctx.stroke();\
  4729. ctx.closePath();\
  4730. ctx.beginPath();\
  4731. ctx.moveTo(zero_x,zero_y);\
  4732. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  4733. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  4734. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  4735. ctx.lineTo(zero_x + snor_x,zero_y);\
  4736. ctx.stroke();\
  4737. ctx.closePath();\
  4738. ctx.beginPath();\
  4739. var num = xstart;\
  4740. var flipflop = 1;\
  4741. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  4742. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4743.   if( 0.5*ctx.measureText(num).width > step_x ){\
  4744.    if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};\
  4745.   };\
  4746.   if( flipflop == 1){\
  4747.    ctx.fillText(num,x - 0.5*ctx.measureText(num).width,zero_y+font_size);\
  4748.   }\
  4749.   else\
  4750.   {\
  4751.    ctx.fillText(num,x - 0.5*ctx.measureText(num).width,zero_y+2*font_size);\
  4752.   }\
  4753.   num = num + xmajor;\
  4754. };\
  4755. ctx.stroke();\
  4756. ctx.closePath();\
  4757. ctx.lineWidth = 1;\
  4758. ctx.beginPath();\
  4759. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4760.   ctx.moveTo(x,zero_y);\
  4761.   ctx.lineTo(x,0);\
  4762. };\
  4763. ctx.stroke();\
  4764. ctx.closePath();\
  4765. if( xminor > 1){\
  4766.  ctx.lineWidth = 0.5;\
  4767.  ctx.beginPath();\
  4768.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  4769.  var minor_step_x = step_x / xminor;\
  4770.  var nx;\
  4771.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  4772.    num = 1;\
  4773.    for(var p = 1 ; p < xminor ; p++){\
  4774.     nx = x + num*minor_step_x;\
  4775.     ctx.moveTo(nx,zero_y);\
  4776.     ctx.lineTo(nx,0);\
  4777.     num++;\
  4778.    };\
  4779.  };\
  4780.  ctx.stroke();\
  4781.  ctx.closePath();\
  4782.  ctx.beginPath();\
  4783.  ctx.lineWidth = 2;\
  4784.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4785.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4786.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  4787.  };\
  4788.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  4789.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  4790.  };\
  4791.  ctx.stroke();\
  4792.  ctx.closePath();\
  4793.  ctx.lineWidth = 0.5;\
  4794. };\
  4795. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  4796. if( ystart != ymin){\
  4797.  snor_y = 0.1*ysize;\
  4798. }\
  4799. else\
  4800. {\
  4801.  snor_y = 0;\
  4802.  ystart = ymin;\
  4803. };\
  4804. ctx.lineWidth = 2;\
  4805. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4806. ctx.beginPath();\
  4807. ctx.moveTo(zero_x,zero_y);\
  4808. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  4809. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  4810. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  4811. ctx.lineTo(zero_x,zero_y - snor_y);\
  4812. ctx.stroke();\
  4813. ctx.closePath();\
  4814. ctx.beginPath();\
  4815. ctx.lineWidth = 1;\
  4816. num = ystart;\
  4817. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  4818. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  4819.  ctx.moveTo(zero_x,y);\
  4820.  ctx.lineTo(xsize,y);\
  4821.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  4822.  num = num + ymajor;\
  4823. };\
  4824. ctx.stroke();\
  4825. ctx.closePath();\
  4826. if( yminor > 1){\
  4827.  ctx.lineWidth = 0.5;\
  4828.  ctx.beginPath();\
  4829.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  4830.  var minor_step_y = step_y / yminor;\
  4831.  var ny;\
  4832.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  4833.   num = 1;\
  4834.   for(var p = 1 ;p < yminor;p++){\
  4835.     ny = y + num*minor_step_y;\
  4836.     ctx.moveTo(zero_x,ny);\
  4837.     ctx.lineTo(xsize,ny);\
  4838.     num++;\
  4839.    };\
  4840.  };\
  4841.  ctx.stroke();\
  4842.  ctx.closePath();\
  4843.  ctx.lineWidth = 2;\
  4844.  ctx.beginPath();\
  4845.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4846.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  4847.   ctx.moveTo(zero_x,y);\
  4848.   ctx.lineTo(zero_x+12,y);\
  4849.  };\
  4850.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  4851.   ctx.moveTo(zero_x,y);\
  4852.   ctx.lineTo(zero_x+6,y);\
  4853.  };\
  4854.  ctx.stroke();\
  4855.  ctx.closePath();\
  4856. };\
  4857. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  4858. if( typeof legend%d  !== 'undefined' ){\
  4859.  ctx.globalAlpha = 1.0;\
  4860.  var y_offset = 2*font_size;\
  4861.  var txt;var txt_size;\
  4862.  var x_offset = xsize - 2*font_size;\
  4863.  var l_length = legend%d.length;var barcolor = new Array();\
  4864.  if( typeof legendcolors%d !== 'undefined' ){\
  4865.   for(var p = 0 ; p < l_length ; p++){\
  4866.    barcolor[p] = legendcolors%d[p];\
  4867.   };\
  4868.  }else{\
  4869.   if( barcolor.length == 0 ){\
  4870.    for(var p = 0 ; p < l_length ; p++){\
  4871.     barcolor[p] = stroke_color;\
  4872.    };\
  4873.   };\
  4874.  };\
  4875.  for(var p = 0; p < l_length; p++){\
  4876.   ctx.fillStyle = barcolor[p];\
  4877.   txt = legend%d[p];\
  4878.   txt_size = ctx.measureText(txt).width;\
  4879.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  4880.   y_offset = parseInt(y_offset + 1.5*font_size);\
  4881.  };\
  4882. };\
  4883. if( typeof xaxislabel !== 'undefined' ){\
  4884.   ctx.fillStyle = \'#000000\';\
  4885.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  4886.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  4887. };\
  4888. if( typeof yaxislabel !== 'undefined'){\
  4889.   ctx.save();\
  4890.   ctx.fillStyle = \'#000000\';\
  4891.   var txt_size = ctx.measureText(yaxislabel).width;\
  4892.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  4893.   ctx.rotate(-0.5*Math.PI);\
  4894.   ctx.fillText(yaxislabel,0,0);\
  4895.   ctx.save();\
  4896. };\
  4897. };\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);
  4898.     break;
  4899.  
  4900.     case DRAW_GRID:/* not used for userdraw */
  4901. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  4902. 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_translate,vector,use_dashed,dashtype0,dashtype1,font_color,fill_opacity){\
  4903. var obj;\
  4904. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4905. obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4906. }\
  4907. else\
  4908. {\
  4909. obj = create_canvas%d(canvas_type,xsize,ysize);\
  4910. };\
  4911. var ctx = obj.getContext(\"2d\");\
  4912. ctx.clearRect(0,0,xsize,ysize);\
  4913. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4914. ctx.save();\
  4915. if( use_translate == 1 ){ctx.translate(vector[0],vector[1]);};\
  4916. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  4917. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4918. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  4919. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  4920. ctx.font = font_family;\
  4921. var xstep = xsize*xmajor/(xmax - xmin);\
  4922. var ystep = ysize*ymajor/(ymax - ymin);\
  4923. var x2step = xstep / xminor;\
  4924. var y2step = ystep / yminor;\
  4925. var zero_x;var zero_y;var f_x;var f_y;\
  4926. if(xmin < 0 ){zero_x = x2px(0);f_x = 1;}else{zero_x = x2px(xmin);f_x = -1;}\
  4927. if(ymin < 0 ){zero_y = y2px(0);f_y = 1;}else{zero_y = y2px(ymin);f_y = -1;}\
  4928. ctx.beginPath();\
  4929. ctx.lineWidth = line_width;\
  4930. ctx.strokeStyle = stroke_color;\
  4931. for(var p = zero_x ; p < xsize; p = p + xstep){\
  4932. ctx.moveTo(p,0);\
  4933. ctx.lineTo(p,ysize);\
  4934. };\
  4935. for(var p = zero_x ; p > 0; p = p - xstep){\
  4936. ctx.moveTo(p,0);\
  4937. ctx.lineTo(p,ysize);\
  4938. };\
  4939. for(var p = zero_y ; p < ysize; p = p + ystep){\
  4940. ctx.moveTo(0,p);\
  4941. ctx.lineTo(xsize,p);\
  4942. };\
  4943. for(var p = zero_y ; p > 0; p = p - ystep){\
  4944. ctx.moveTo(0,p);\
  4945. ctx.lineTo(xsize,p);\
  4946. };\
  4947. if( typeof xaxislabel !== 'undefined' ){\
  4948. ctx.save();\
  4949. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  4950. var corr =  ctx.measureText(xaxislabel).width;\
  4951. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  4952. ctx.restore();\
  4953. };\
  4954. if( typeof yaxislabel !== 'undefined' ){\
  4955. ctx.save();\
  4956. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  4957. corr =  ctx.measureText(yaxislabel).width;\
  4958. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  4959. ctx.rotate(-0.5*Math.PI);\
  4960. ctx.fillText(yaxislabel,0,0);\
  4961. ctx.restore();\
  4962. };\
  4963. ctx.stroke();\
  4964. ctx.closePath();\
  4965. if( use_axis == 1 ){\
  4966. ctx.beginPath();\
  4967. ctx.strokeStyle = stroke_color;\
  4968. ctx.lineWidth = 0.6*line_width;\
  4969. for(var p = zero_x ; p < xsize; p = p + x2step){\
  4970.  ctx.moveTo(p,0);\
  4971.  ctx.lineTo(p,ysize);\
  4972. };\
  4973. for(var p = zero_x ; p > 0; p = p - x2step){\
  4974.  ctx.moveTo(p,0);\
  4975.  ctx.lineTo(p,ysize);\
  4976. };\
  4977. for(var p = zero_y ; p < ysize; p = p + y2step){\
  4978.  ctx.moveTo(0,p);\
  4979.  ctx.lineTo(xsize,p);\
  4980. };\
  4981. for(var p = zero_y ; p > 0; p = p - y2step){\
  4982.  ctx.moveTo(0,p);\
  4983.  ctx.lineTo(xsize,p);\
  4984. };\
  4985. ctx.stroke();\
  4986. ctx.closePath();\
  4987. ctx.beginPath();\
  4988. ctx.lineWidth = 2*line_width;\
  4989. ctx.strokeStyle = axis_color;\
  4990. ctx.moveTo(0,zero_y);\
  4991. ctx.lineTo(xsize,zero_y);\
  4992. ctx.moveTo(zero_x,0);\
  4993. ctx.lineTo(zero_x,ysize);\
  4994. ctx.stroke();\
  4995. ctx.closePath();\
  4996. ctx.lineWidth = line_width+0.5;\
  4997. ctx.beginPath();\
  4998. for(var p = zero_x ; p < xsize; p = p + xstep){\
  4999.  ctx.moveTo(p,zero_y-tics_length);\
  5000.  ctx.lineTo(p,zero_y+tics_length);\
  5001. };\
  5002. for(var p = zero_x ; p > 0; p = p - xstep){\
  5003.  ctx.moveTo(p,zero_y-tics_length);\
  5004.  ctx.lineTo(p,zero_y+tics_length);\
  5005. };\
  5006. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5007.  ctx.moveTo(zero_x-tics_length,p);\
  5008.  ctx.lineTo(zero_x+tics_length,p);\
  5009. };\
  5010. for(var p = zero_y ; p > 0; p = p - ystep){\
  5011.  ctx.moveTo(zero_x-tics_length,p);\
  5012.  ctx.lineTo(zero_x+tics_length,p);\
  5013. };\
  5014. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5015.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5016.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5017. };\
  5018. for(var p = zero_x ; p > 0; p = p - x2step){\
  5019.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5020.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5021. };\
  5022. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5023.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5024.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5025. };\
  5026. for(var p = zero_y ; p > 0; p = p - y2step){\
  5027.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5028.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5029. };\
  5030. ctx.stroke();\
  5031. ctx.closePath();\
  5032. if( use_axis_numbering == 1 ){\
  5033.  var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5034.  if( x_strings != null ){\
  5035.   var f = 1.4;\
  5036.   var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5037.   for(var p = 0 ; p < len ; p = p+2){\
  5038.     var x_nums = x2px(eval(x_strings[p]));\
  5039.     var x_text = x_strings[p+1];\
  5040.     corr = ctx.measureText(x_text).width;\
  5041.     skip = 1.2*corr/xstep;\
  5042.     if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5043.     if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5044.     ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5045.   }\
  5046.  }\
  5047.  else\
  5048.  {\
  5049.   corr=0;skip = 1;cnt = px2x(zero_x);\
  5050.   prec = Math.log(precision)/(Math.log(10));\
  5051.   for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5052.    if(skip == 0 ){\
  5053.      disp_cnt = cnt.toFixed(prec);\
  5054.      corr = ctx.measureText(disp_cnt).width;\
  5055.      skip = parseInt(1.2*corr/xstep);\
  5056.      ctx.fillText(disp_cnt,p-0.5*corr,parseInt(zero_y+(1.4*f_x*font_size)));\
  5057.    }\
  5058.    else\
  5059.    {\
  5060.     skip--;\
  5061.    };\
  5062.    cnt = cnt + xmajor;\
  5063.   };\
  5064.   cnt = px2x(zero_x);skip = 1;\
  5065.   for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5066.    if(skip == 0 ){\
  5067.     disp_cnt = cnt.toFixed(prec);\
  5068.     corr = ctx.measureText(disp_cnt).width;\
  5069.     skip = parseInt(1.2*corr/xstep);\
  5070.     ctx.fillText(disp_cnt,p-0.5*corr,parseInt(zero_y+(1.4*f_x*font_size)));\
  5071.    }\
  5072.    else\
  5073.    {\
  5074.     skip--;\
  5075.    };\
  5076.    cnt = cnt - xmajor;\
  5077.   };\
  5078.  };\
  5079.  if( y_strings != null ){\
  5080.   var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5081.   for(var p = 0 ; p < len ; p = p+2){\
  5082.    var y_nums = y2px(eval(y_strings[p]));\
  5083.    var y_text = y_strings[p+1];\
  5084.    var f = 1.4;\
  5085.    corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5086.    if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5087.    ctx.fillText(y_text,zero_x - corr,y_nums);\
  5088.   };\
  5089.  }\
  5090.  else\
  5091.  {\
  5092.   corr = 0;cnt = px2y(zero_y);skip = 1;\
  5093.   for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5094.    if(skip == 0 ){\
  5095.     skip = parseInt(1.4*font_size/ystep);\
  5096.     disp_cnt = cnt.toFixed(prec);\
  5097.     if(f_y == 1){corr = 2 + tics_length + ctx.measureText(disp_cnt).width;}\
  5098.     ctx.fillText(disp_cnt,parseInt(zero_x - corr),parseInt(p+(0.4*font_size)));\
  5099.    }\
  5100.    else\
  5101.    {\
  5102.     skip--;\
  5103.    };\
  5104.    cnt = cnt - ymajor;\
  5105.   }\
  5106.   corr = 0;cnt = px2y(zero_y);skip = 1;\
  5107.   for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5108.    if(skip == 0 ){\
  5109.     skip = parseInt(1.4*font_size/ystep);\
  5110.     disp_cnt = cnt.toFixed(prec);\
  5111.     if(f_y == 1){corr = 2 + tics_length + ctx.measureText(disp_cnt).width;}\
  5112.     ctx.fillText(disp_cnt,parseInt(zero_x - corr),parseInt(p+(0.4*font_size)));\
  5113.    }\
  5114.    else\
  5115.    {\
  5116.     skip--;\
  5117.    };\
  5118.    cnt = cnt + ymajor;\
  5119.   }\
  5120.  };\
  5121. };\
  5122. ctx.strokeStyle = stroke_color;\
  5123. ctx.lineWidth = 2;\
  5124. ctx.beginPath();\
  5125. ctx.rect(0,0,xsize,ysize);\
  5126. ctx.closePath();\
  5127. ctx.stroke();\
  5128. };\
  5129. if( typeof linegraph_0 !== 'undefined' ){\
  5130. ctx.restore();\
  5131. ctx.save();\
  5132. ctx.globalAlpha = 1.0;\
  5133. var i = 0;\
  5134. var line_name = eval('linegraph_'+i);\
  5135. while ( typeof line_name !== 'undefined' ){\
  5136.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5137.  ctx.lineWidth = parseInt(line_name[1]);\
  5138.  if(line_name[2] == \"1\"){\
  5139.   var d1 = parseInt(line_name[3]);\
  5140.   var d2 = parseInt(line_name[4]);\
  5141.   if(ctx.setLineDash){ ctx.setLineDash(d1,d2); } else { ctx.mozDash = [d1,d2];};\
  5142.  }\
  5143.  else\
  5144.  {\
  5145.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5146.  if(ctx.mozDash){ctx.mozDash = null;}\
  5147.  };\
  5148.  var data_x = new Array();\
  5149.  var data_y = new Array();\
  5150.  var lb = line_name.length;\
  5151.  var idx = 0;\
  5152.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5153.   data_x[idx] = x2px(line_name[p]);\
  5154.   data_y[idx] = y2px(line_name[p+1]);\
  5155.   idx++;\
  5156.  };\
  5157.  for( var p = 0; p < idx ; p++){\
  5158.   ctx.beginPath();\
  5159.   ctx.moveTo(data_x[p],data_y[p]);\
  5160.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5161.   ctx.stroke();\
  5162.   ctx.closePath();\
  5163.  };\
  5164.  i++;\
  5165.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  5166. };\
  5167. };\
  5168. var barcolor = new Array();\
  5169. if( typeof barchart%d  !== 'undefined' ){\
  5170. ctx.restore();\
  5171. ctx.save();\
  5172. ctx.globalAlpha = 1.0;\
  5173. var bar_x = new Array();\
  5174. var bar_y = new Array();\
  5175. var lb = barchart%d.length;\
  5176. var idx = 0;\
  5177. for( var p = 0 ; p < lb ; p = p + 3 ){\
  5178.  bar_x[idx] = x2px(barchart%d[p]);\
  5179.  bar_y[idx] = y2px(barchart%d[p+1]);\
  5180.  barcolor[idx] = barchart%d[p+2];\
  5181.  idx++;\
  5182. };\
  5183. var dx = parseInt(0.6*xstep);\
  5184. ctx.globalAlpha = fill_opacity;\
  5185. for( var p = 0; p < idx ; p++ ){\
  5186.  ctx.beginPath();\
  5187.  ctx.strokeStyle = barcolor[p];\
  5188.  ctx.fillStyle = barcolor[p];\
  5189.  ctx.rect(bar_x[p]-0.5*dx,bar_y[p],dx,zero_y - bar_y[p]);\
  5190.  ctx.fill();\
  5191.  ctx.stroke();\
  5192.  ctx.closePath();\
  5193. };\
  5194. };\
  5195. if( typeof legend%d  !== 'undefined' ){\
  5196. ctx.globalAlpha = 1.0;\
  5197. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5198. var y_offset = 2*font_size;\
  5199. var txt;var txt_size;\
  5200. var x_offset = xsize - 2*font_size;\
  5201. var l_length = legend%d.length;\
  5202. if( typeof legendcolors%d !== 'undefined' ){\
  5203.  for(var p = 0 ; p < l_length ; p++){\
  5204.    barcolor[p] = legendcolors%d[p];\
  5205.  };\
  5206. }else{\
  5207.  if( barcolor.length == 0 ){\
  5208.   for(var p = 0 ; p < l_length ; p++){\
  5209.    barcolor[p] = stroke_color;\
  5210.   };\
  5211.  };\
  5212. };\
  5213. for(var p = 0; p < l_length; p++){\
  5214.  ctx.fillStyle = barcolor[p];\
  5215.  txt = legend%d[p];\
  5216.  txt_size = ctx.measureText(txt).width;\
  5217.  ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5218.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5219. };\
  5220. };\
  5221. ctx.restore();\
  5222. return;\
  5223. };",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,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5224.     break;
  5225.    
  5226.     case DRAW_PIECHART:
  5227. fprintf(js_include_file,"\n<!-- draw piechars -->\n\
  5228. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,font_size,font_family){\
  5229. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5230.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5231. }\
  5232. else\
  5233. {\
  5234.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5235. };\
  5236. var ld = data_color_list.length;\
  5237. var sum = 0;\
  5238. var idx = 0;\
  5239. var colors = new Array();\
  5240. var data = new Array();\
  5241. for(var p = 0;p < ld; p = p + 2){\
  5242.  data[idx] = parseFloat(data_color_list[p]);\
  5243.  sum = sum + data[idx];\
  5244.  colors[idx] = data_color_list[p+1];\
  5245.  idx++;\
  5246. };\
  5247. var ctx = obj.getContext(\"2d\");\
  5248. ctx.save();\
  5249. var angle;\
  5250. var angle_end = 0;\
  5251. var offset = Math.PI / 2;\
  5252. ctx.globalAlpha = fill_opacity;\
  5253. for(var p=0; p < idx; p++){\
  5254.  ctx.beginPath();\
  5255.  ctx.fillStyle = colors[p];\
  5256.  ctx.moveTo(x_center,y_center);\
  5257.  angle = Math.PI * (2 * data[p] / sum);\
  5258.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  5259.  ctx.lineTo(x_center, y_center);\
  5260.  ctx.fill();\
  5261.  ctx.closePath();\
  5262.  angle_end  = angle_end + angle;\
  5263. };\
  5264. if( typeof legend%d  !== 'undefined' ){\
  5265.  ctx.globalAlpha = 1.0;\
  5266.  ctx.font = font_size+\"px \"+font_family;\
  5267.  var y_offset = font_size; \
  5268.  var x_offset = 0;\
  5269.  var txt;var txt_size;\
  5270.  for(var p = 0; p < idx; p++){\
  5271.   ctx.fillStyle = colors[p];\
  5272.   txt = legend%d[p];\
  5273.   txt_size = ctx.measureText(txt).width;\
  5274.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  5275.   ctx.fillText(legend%d[p],x_center + radius - x_offset, y_center - radius + y_offset);\
  5276.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5277.  };\
  5278. };\
  5279. ctx.restore();\
  5280. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5281.    
  5282.     break;
  5283.     case DRAW_ARCS:
  5284. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  5285. draw_arc = function(canvas_type,xc,yc,r,start,end,line_width,stroke_color,stroke_opacity,use_filled,fill_color,fill_opacity,use_dashed,dashtype0,use_rotate,angle,use_translate,vector){\
  5286. var obj;\
  5287. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5288.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5289. }\
  5290. else\
  5291. {\
  5292.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5293. };\
  5294. var ctx = obj.getContext(\"2d\");\
  5295. ctx.save();\
  5296. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  5297. if( use_translate == 1 ){ctx.translate(vector[0],vector[1]);};\
  5298. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  5299. if(end < start){var tmp = end;end = start;start=tmp;};\
  5300. start=360-start;\
  5301. end=360-end;\
  5302. ctx.lineWidth = line_width;\
  5303. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5304. if( use_filled == 1 ){\
  5305.  ctx.beginPath();\
  5306.  ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  5307.  var x1 = xc + r*Math.cos(Math.PI*start/180);\
  5308.  var y1 = yc + r*Math.sin(Math.PI*start/180);\
  5309.  var x2 = xc + r*Math.cos(Math.PI*end/180);\
  5310.  var y2 = yc + r*Math.sin(Math.PI*end/180);\
  5311.  ctx.beginPath();\
  5312.  ctx.moveTo(x1,y1);\
  5313.  ctx.lineTo(xc,yc);\
  5314.  ctx.moveTo(xc,yc);\
  5315.  ctx.lineTo(x2,y2);\
  5316.  ctx.closePath();\
  5317.  ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5318.  ctx.fill();\
  5319.  ctx.stroke();\
  5320. }\
  5321. else\
  5322. {\
  5323.    ctx.beginPath();\
  5324.    ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5325.    ctx.stroke();\
  5326.    ctx.closePath();\
  5327. }\
  5328. ctx.restore();\
  5329. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5330.    
  5331.     break;
  5332.     case DRAW_TEXTS:
  5333. fprintf(js_include_file,"\n<!-- draw text -->\n\
  5334. draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_translate,vector){\
  5335.  var obj;\
  5336.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5337.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5338.  }\
  5339.  else\
  5340.  {\
  5341.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  5342.  };\
  5343.  var ctx = obj.getContext(\"2d\");\
  5344.  if(angle2 == 0 && angle != 0){\
  5345.   ctx.save();\
  5346.   if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5347.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5348.  };\
  5349.  if( font_family.indexOf('px') != null ){\
  5350.   ctx.font = font_family;\
  5351.  }\
  5352.  else\
  5353.  {\
  5354.   ctx.font = \"+font_size+'px '+font_family \";\
  5355.  };\
  5356.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5357.  if(angle2 != 0){\
  5358.   ctx.save();\
  5359.   ctx.translate(x,y);\
  5360.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  5361.   ctx.fillText(text,0,0);\
  5362.   ctx.restore();\
  5363.  }else{ctx.fillText(text,x,y);};\
  5364. ctx.restore();\
  5365. return;\
  5366. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5367.    
  5368.     break;
  5369.     case DRAW_CURVE:
  5370. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  5371. draw_curve = function(canvas_type,type,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,use_rotate,angle,use_translate,vector){\
  5372. var obj;\
  5373. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5374.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5375. }\
  5376. else\
  5377. {\
  5378.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5379. };\
  5380. var ctx = obj.getContext(\"2d\");\
  5381. ctx.save();\
  5382. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5383. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5384. ctx.beginPath();ctx.lineWidth = line_width;\
  5385. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5386. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5387. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  5388. for(var p = 1 ; p < x_points.length ; p++){\
  5389.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  5390.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  5391.  }\
  5392.  else\
  5393.  {\
  5394.   ctx.stroke();\
  5395.   ctx.beginPath();\
  5396.   p++;\
  5397.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  5398.  };\
  5399. };\
  5400. ctx.stroke();\
  5401. ctx.restore();\
  5402. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5403.     break;
  5404.    
  5405.     case DRAW_INPUTS:
  5406. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  5407. draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  5408. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5409. var input = document.createElement(\"input\");\
  5410. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5411. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5412. input.setAttribute(\"size\",size);\
  5413. input.setAttribute(\"value\",value);\
  5414. if( readonly == 0 ){ input.setAttribute(\"readonly\",\"readonly\");};\
  5415. canvas_div.appendChild(input);};");
  5416.     break;
  5417.    
  5418.     case DRAW_TEXTAREAS:
  5419. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  5420. draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  5421. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5422. var textarea = document.createElement(\"textarea\");\
  5423. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5424. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5425. textarea.setAttribute(\"cols\",cols);\
  5426. textarea.setAttribute(\"rows\",rows);\
  5427. textarea.innerHTML = value;\
  5428. canvas_div.appendChild(textarea);};");
  5429.     break;
  5430.    
  5431. case DRAW_PIXELS:
  5432. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  5433. draw_setpixel = function(x,y,color,opacity,pixelsize){\
  5434. var canvas = create_canvas%d(10,xsize,ysize);\
  5435. var d = 0.5*pixelsize;\
  5436. var ctx = canvas.getContext(\"2d\");\
  5437. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  5438. ctx.clearRect(0,0,xsize,ysize);\
  5439. for(var p=0; p<x.length;p++){\
  5440.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  5441. };\
  5442. ctx.fill();ctx.stroke();\
  5443. };",canvas_root_id);
  5444. break;
  5445.  
  5446. case DRAW_CLOCK:
  5447. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  5448. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  5449. var clock_ctx = clock_canvas.getContext(\"2d\");\
  5450. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  5451. clock_ctx.save();\
  5452. this.type = type || 0;\
  5453. this.interaction = interaction || 0;\
  5454. this.H = H || parseInt(110*(Math.random()));\
  5455. this.M = M || parseInt(590*(Math.random()));\
  5456. this.S = S || parseInt(590*(Math.random()));\
  5457. this.xc = xc || xsize/2;\
  5458. this.yc = yc || ysize/2;\
  5459. this.radius = radius || xsize/4;\
  5460. var font_size = parseInt(0.2*this.radius);\
  5461. this.H_color = h_color || \"blue\";\
  5462. this.M_color = m_color || \"blue\";\
  5463. this.S_color = s_color || \"blue\";\
  5464. this.fg_color = fg_color || \"red\";\
  5465. this.bg_color = bg_color || \"white\";\
  5466. clock_ctx.translate(this.xc,this.yc);\
  5467. clock_ctx.beginPath();\
  5468. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  5469. clock_ctx.fillStyle = this.bg_color;\
  5470. clock_ctx.fill();\
  5471. clock_ctx.closePath();\
  5472. clock_ctx.beginPath();\
  5473. clock_ctx.font = font_size+\"px Arial\";\
  5474. clock_ctx.fillStyle = this.fg_color;\
  5475. clock_ctx.textAlign = \"center\";\
  5476. clock_ctx.textBaseline = 'middle';\
  5477. var angle;var x1,y1,x2,y2;\
  5478. var angle_cos;var angle_sin;\
  5479. switch(type){\
  5480. case 0:clock_ctx.beginPath();\
  5481. for(var p = 1; p <= 12 ; p++){\
  5482.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5483.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5484.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5485.  clock_ctx.moveTo(x1,y1);\
  5486.  clock_ctx.lineTo(x2,y2);\
  5487. };\
  5488. for(var p = 1; p <= 60 ; p++){\
  5489.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5490.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5491.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5492.  clock_ctx.moveTo(x1,y1);\
  5493.  clock_ctx.lineTo(x2,y2);\
  5494. };\
  5495. clock_ctx.closePath();\
  5496. clock_ctx.stroke();\
  5497. break;\
  5498. case 1:\
  5499. 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;\
  5500. case 2:for(var p= 1; p <= 12 ; p++){ angle = (p - 3) * (Math.PI * 2) / 12;x1 = 1.1*this.radius*Math.cos(angle);y1 = 1.1*this.radius*Math.sin(angle);clock_ctx.fillText(p, x1, y1);};\
  5501. clock_ctx.beginPath();\
  5502. for(var p = 1; p <= 12 ; p++){\
  5503.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5504.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5505.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5506.  clock_ctx.moveTo(x1,y1);\
  5507.  clock_ctx.lineTo(x2,y2);\
  5508. };\
  5509. for(var p = 1; p <= 60 ; p++){\
  5510.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5511.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5512.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5513.  clock_ctx.moveTo(x1,y1);\
  5514.  clock_ctx.lineTo(x2,y2);\
  5515. };\
  5516. clock_ctx.closePath();\
  5517. clock_ctx.stroke();\
  5518. break;\
  5519. };\
  5520. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  5521. clock_ctx.rotate(angle);\
  5522. clock_ctx.beginPath();\
  5523. clock_ctx.moveTo(-3, -2);\
  5524. clock_ctx.lineTo(-3, 2);\
  5525. clock_ctx.lineTo(this.radius * 0.7, 1);\
  5526. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  5527. clock_ctx.fillStyle = this.H_color;\
  5528. clock_ctx.fill();\
  5529. clock_ctx.rotate(-angle);\
  5530. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  5531. clock_ctx.rotate(angle);\
  5532. clock_ctx.beginPath();\
  5533. clock_ctx.moveTo(-3, -2);\
  5534. clock_ctx.lineTo(-3, 2);\
  5535. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  5536. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  5537. clock_ctx.fillStyle = this.M_color;\
  5538. clock_ctx.fill();\
  5539. clock_ctx.rotate(-angle);\
  5540. angle = (this.S - 15) * 2 * Math.PI / 60;\
  5541. clock_ctx.rotate(angle);\
  5542. clock_ctx.beginPath();\
  5543. clock_ctx.moveTo(0,0);\
  5544. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  5545. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  5546. clock_ctx.strokeStyle = this.S_color;\
  5547. clock_ctx.stroke();\
  5548. clock_ctx.restore();\
  5549. };",canvas_root_id,CLOCK_CANVAS);
  5550. break;
  5551.  
  5552. case DRAW_LATTICE:
  5553. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  5554. 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_translate,vector){\
  5555. var obj;\
  5556. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5557.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5558. }\
  5559. else\
  5560. {\
  5561.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5562. };\
  5563. var ctx = obj.getContext(\"2d\");\
  5564. ctx.save();\
  5565. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5566. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5567. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5568. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5569. var radius = line_width;\
  5570. var x = 0;\
  5571. var y = 0;\
  5572. var x_step_px = xsize/(xmax-xmin);\
  5573. var y_step_px = ysize/(ymax-ymin);\
  5574. var xv1 = dx1*x_step_px;\
  5575. var yv1 = dy1*y_step_px;\
  5576. var xv2 = dx2*x_step_px;\
  5577. var yv2 = dy2*y_step_px;\
  5578. for(var p = 0; p < n1 ;p++){\
  5579.  x = p*xv1 + x0;\
  5580.  y = p*yv1 + y0;\
  5581.  for(var c = 0; c < n2 ; c++){\
  5582.   ctx.beginPath();\
  5583.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  5584.   ctx.fill();\
  5585.   ctx.stroke();\
  5586.   ctx.closePath();\
  5587.  };\
  5588. };\
  5589. ctx.restore();\
  5590. return;\
  5591. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5592.     break;
  5593. case DRAW_XYLOGSCALE:
  5594. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  5595. 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){\n\
  5596. var obj;\n\
  5597. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5598.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5599. }\n\
  5600. else\n\
  5601. {\n\
  5602.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5603. };\n\
  5604. var ctx = obj.getContext(\"2d\");\n\
  5605. ctx.clearRect(0,0,xsize,ysize);\
  5606. ctx.save();\n\
  5607. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  5608. var x_min = Math.log(xmin)/Math.log(xlogbase);\n\
  5609. var x_max = Math.log(xmax)/Math.log(xlogbase);\n\
  5610. var y_min = Math.log(ymin)/Math.log(ylogbase);\n\
  5611. var y_max = Math.log(ymax)/Math.log(ylogbase);\n\
  5612. if(use_axis_numbering == 1){\
  5613.  ctx.font = font_family;\n\
  5614.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\n\
  5615.  ymarge = parseInt(1.5*font_size);\n\
  5616.  ctx.save();\n\
  5617.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5618.  ctx.rect(0,0,xmarge,ysize);\n\
  5619.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5620.  ctx.fill();\n\
  5621.  ctx.restore();\n\
  5622. }else{xmarge = 0;ymarge = 0;};\n\
  5623. if( typeof xaxislabel !== 'undefined' ){\
  5624.  ctx.save();\n\
  5625.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5626.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5627.  corr =  ctx.measureText(xaxislabel).width;\n\
  5628.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5629.  ctx.restore();\n\
  5630. };\n\
  5631. if( typeof yaxislabel !== 'undefined' ){\
  5632.  ctx.save();\n\
  5633.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5634.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5635.  corr = ctx.measureText(yaxislabel).width;\n\
  5636.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5637.  ctx.rotate(-0.5*Math.PI);\n\
  5638.  ctx.fillText(yaxislabel,0,0);\n\
  5639.  ctx.restore();\n\
  5640. };\n\
  5641. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5642. ctx.lineWidth = line_width;\n\n\
  5643. for(var p = x_min; p <= x_max ; p++){\n\
  5644.  num = Math.pow(xlogbase,p);\n\n\
  5645.  for(var i = 1 ; i < xlogbase ; i++){\n\
  5646.   x_e = x2px(i*num);\n\n\
  5647.   if( i == 1 ){\
  5648.    ctx.lineWidth = line_width;\n\n\
  5649.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\n\
  5650.    if( use_axis_numbering == 1 && p > x_min){\
  5651.      xtxt = xlogbase+'^'+p.toFixed(0);\n\
  5652.      corr = 0.5*(ctx.measureText(xtxt).width);\n\
  5653.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\n\
  5654.    };\n\
  5655.   }else{\
  5656.    ctx.lineWidth = 0.2*line_width;\n\n\
  5657.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\n\
  5658.   };\n\
  5659.   if( x_e >= xmarge ){\
  5660.    ctx.beginPath();\n\
  5661.    ctx.moveTo(x_e,0);\n\
  5662.    ctx.lineTo(x_e,ysize - ymarge);\n\n\
  5663.    ctx.stroke();\n\
  5664.    ctx.closePath();\n\
  5665.   };\
  5666.  };\n\
  5667. };\n\
  5668. for(var p = y_min; p <= y_max ; p++){\n\
  5669.  num = Math.pow(ylogbase,p);\n\
  5670.  for(var i = 1 ; i < ylogbase ; i++){\n\
  5671.   y_e = y2px(i*num);\n\
  5672.   if( i == 1 ){\n\
  5673.    ctx.lineWidth = line_width;\n\
  5674.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5675.    if( use_axis_numbering == 1 && p > y_min){\n\
  5676.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\n\
  5677.    };\n\
  5678.   }else{\n\
  5679.    ctx.lineWidth = 0.2*line_width;\n\
  5680.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\n\
  5681.   };\n\
  5682.   ctx.beginPath();\n\
  5683.   ctx.moveTo(xmarge,y_e);\n\
  5684.   ctx.lineTo(xsize,y_e);\n\
  5685.   ctx.stroke();\n\
  5686.   ctx.closePath();\n\
  5687.  };\n\
  5688. };\n\
  5689. ctx.restore();\
  5690. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5691.     break;
  5692.  
  5693. case DRAW_XLOGSCALE:
  5694. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  5695. 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){\n\
  5696. var obj;\n\
  5697. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5698.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5699. }\n\
  5700. else\n\
  5701. {\n\
  5702.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5703. };\n\
  5704. var ctx = obj.getContext(\"2d\");\n\
  5705. ctx.clearRect(0,0,xsize,ysize);\
  5706. ctx.save();\n\
  5707. ctx.lineWidth = line_width;\n\
  5708. var prec = Math.log(precision)/Math.log(10);\
  5709. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  5710. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  5711. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  5712. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  5713. if(use_axis_numbering == 1){\
  5714.  ctx.font = font_family;\n\
  5715.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\n\
  5716.  ymarge = parseInt(1.5*font_size);\n\
  5717.  ctx.save();\n\
  5718.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5719.  ctx.rect(0,0,xmarge,ysize);\n\
  5720.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5721.  ctx.fill();\n\
  5722.  ctx.restore();\n\
  5723. }else{xmarge = 0;ymarge = 0;};\n\
  5724. if( typeof xaxislabel !== 'undefined' ){\
  5725.  ctx.save();\n\
  5726.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5727.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5728.  corr =  ctx.measureText(xaxislabel).width;\n\
  5729.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5730.  ctx.restore();\n\
  5731. };\n\
  5732. if( typeof yaxislabel !== 'undefined' ){\
  5733.  ctx.save();\n\
  5734.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5735.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5736.  corr = ctx.measureText(yaxislabel).width;\n\
  5737.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5738.  ctx.rotate(-0.5*Math.PI);\n\
  5739.  ctx.fillText(yaxislabel,0,0);\n\
  5740.  ctx.restore();\n\
  5741. };\n\
  5742. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5743. ctx.lineWidth = line_width;\n\n\
  5744. for(var p = x_min; p <= x_max ; p++){\n\
  5745.  num = Math.pow(xlogbase,p);\n\
  5746.  for(var i = 1 ; i < xlogbase ; i++){\n\
  5747.   x_e = x2px(i*num);\n\
  5748.   if( i == 1 ){\
  5749.     ctx.lineWidth = line_width;\n\
  5750.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5751.    if( use_axis_numbering == 1 && p > x_min ){\
  5752.      xtxt = xlogbase+'^'+p.toFixed(0);\
  5753.      corr = 0.5*(ctx.measureText(xtxt).width);\
  5754.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  5755.    };\
  5756.   }else{\
  5757.    ctx.lineWidth = 0.2*line_width;\n\
  5758.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5759.   };\
  5760.   if( x_e >= xmarge ){\
  5761.    ctx.beginPath();\n\
  5762.    ctx.moveTo(x_e,0);\n\
  5763.    ctx.lineTo(x_e,ysize - ymarge);\n\n\
  5764.    ctx.stroke();\n\
  5765.    ctx.closePath();\n\
  5766.   };\
  5767.  };\
  5768. };\n\
  5769. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  5770. var minor_step = stepy / yminor;\
  5771. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  5772.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5773.  ctx.lineWidth = line_width;\n\
  5774.  ctx.beginPath();\n\
  5775.  ctx.moveTo(xmarge,y);\n\
  5776.  ctx.lineTo(xsize,y);\n\
  5777.  ctx.stroke();\n\
  5778.  ctx.closePath();\n\
  5779.  if( use_axis_numbering == 1){\
  5780.   ytxt = (px2y(y)).toFixed(prec);\
  5781.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  5782.  };\
  5783.  for(var dy = 1 ; dy < yminor ; dy++){\
  5784.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5785.   ctx.lineWidth = 0.2*line_width;\n\
  5786.   ctx.beginPath();\n\
  5787.   ctx.moveTo(xmarge,y+dy*minor_step);\
  5788.   ctx.lineTo(xsize,y+dy*minor_step);\n\
  5789.   ctx.stroke();\n\
  5790.   ctx.closePath();\n\
  5791.  };\
  5792. };\
  5793. ctx.restore();\n\
  5794. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5795.     break;
  5796. case DRAW_YLOGSCALE:
  5797. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  5798. 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){\n\
  5799. var obj;\n\
  5800. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5801.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5802. }\n\
  5803. else\n\
  5804. {\n\
  5805.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5806. };\n\
  5807. var ctx = obj.getContext(\"2d\");\n\
  5808. ctx.clearRect(0,0,xsize,ysize);\
  5809. ctx.save();\n\
  5810. ctx.lineWidth = line_width;\n\
  5811. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  5812. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  5813. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;\
  5814. if(use_axis_numbering == 1){\
  5815.  ctx.font = font_family;\n\
  5816.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\n\
  5817.  ymarge = 2*font_size;\n\
  5818.  ctx.save();\n\
  5819.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5820.  ctx.rect(0,0,xmarge,ysize);\n\
  5821.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5822.  ctx.fill();\n\
  5823.  ctx.restore();\n\
  5824. }else{xmarge = 0;ymarge = 0;};\n\
  5825. if( typeof xaxislabel !== 'undefined' ){\
  5826.  ctx.save();\n\
  5827.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5828.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5829.  corr =  ctx.measureText(xaxislabel).width;\n\
  5830.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5831.  ctx.restore();\n\
  5832. };\n\
  5833. if( typeof yaxislabel !== 'undefined' ){\
  5834.  ctx.save();\n\
  5835.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5836.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5837.  corr = ctx.measureText(yaxislabel).width;\n\
  5838.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5839.  ctx.rotate(-0.5*Math.PI);\n\
  5840.  ctx.fillText(yaxislabel,0,0);\n\
  5841.  ctx.restore();\n\
  5842. };\n\
  5843. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5844. ctx.lineWidth = line_width;\n\n\
  5845. for(var p = y_min; p <= y_max ; p++){\n\
  5846.  num = Math.pow(ylogbase,p);\n\
  5847.  for(var i = 1 ; i < ylogbase ; i++){\n\
  5848.   y_e = y2px(i*num);\n\
  5849.   if( i == 1 ){\
  5850.    ctx.lineWidth = line_width;\n\
  5851.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5852.    if( use_axis_numbering == 1 && p > y_min){\
  5853.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  5854.    };\
  5855.   }else{\
  5856.    ctx.lineWidth = 0.2*line_width;\n\
  5857.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5858.   };\
  5859.   ctx.beginPath();\n\
  5860.   ctx.moveTo(xmarge,y_e);\n\
  5861.   ctx.lineTo(xsize,y_e);\n\
  5862.   ctx.stroke();\n\
  5863.   ctx.closePath();\n\
  5864.  };\n\
  5865. };\n\
  5866. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  5867. var minor_step = stepx / xminor;\
  5868. var prec = Math.log(precision)/Math.log(10);\
  5869. var xtxt;var corr;var flip = 0;\
  5870. for(var x = stepx ; x < xsize ; x = x + stepx){\
  5871.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5872.  ctx.lineWidth = line_width;\n\
  5873.  ctx.beginPath();\n\
  5874.  ctx.moveTo(x,ysize-ymarge);\n\
  5875.  ctx.lineTo(x,0);\n\
  5876.  ctx.stroke();\n\
  5877.  ctx.closePath();\n\
  5878.  if( use_axis_numbering == 1){\
  5879.   xtxt = (px2x(x)).toFixed(prec);\
  5880.   corr = 0.5*(ctx.measureText(xtxt).width);\
  5881.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  5882.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  5883.  };\
  5884.  for(var dx = 1 ; dx < xminor ; dx++){\
  5885.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5886.   ctx.lineWidth = 0.2*line_width;\n\
  5887.   ctx.beginPath();\n\
  5888.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  5889.   ctx.lineTo(x+dx*minor_step,0);\n\
  5890.   ctx.stroke();\n\
  5891.   ctx.closePath();\n\
  5892.  };\
  5893. };\
  5894. ctx.restore();\n\
  5895. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5896.  
  5897.     break;
  5898.  
  5899.  
  5900.     default:break;
  5901.    }
  5902.   }
  5903.  }
  5904.   return;
  5905. }
  5906.  
  5907. void check_string_length(int L){
  5908.  if(L<1 || L > MAX_BUFFER-1){
  5909.   canvas_error("problem with your arguments to command...");
  5910.  }
  5911.  return;
  5912. }
  5913.  
  5914.  
  5915. int get_token(FILE *infile){
  5916.         int     c,i=0;
  5917.         char    temp[MAX_INT], *input_type;
  5918.         char    *line="line",
  5919.         *audio="audio",
  5920.         *blink="blink",
  5921.         *arrowhead="arrowhead",
  5922.         *crosshairsize="crosshairsize",
  5923.         *crosshair="crosshair",
  5924.         *crosshairs="crosshairs",
  5925.         *audioobject="audioobject",
  5926.         *style="style",
  5927.         *mouse="mouse",
  5928.         *userdraw="userdraw",
  5929.         *highlight="highlight",
  5930.         *http="http",
  5931.         *rays="rays",
  5932.         *dashtype="dashtype",
  5933.         *dashed="dashed",
  5934.         *filled="filled",
  5935.         *lattice="lattice",
  5936.         *parallel="parallel",
  5937.         *segment="segment",
  5938.         *dsegment="dsegment",
  5939.         *seg="seg",
  5940.         *bgimage="bgimage",
  5941.         *bgcolor="bgcolor",
  5942.         *strokecolor="strokecolor",
  5943.         *backgroundimage="backgroundimage",
  5944.         *text="text",
  5945.         *textup="textup",
  5946.         *mouseprecision="mouseprecision",
  5947.         *precision="precision",
  5948.         *plotsteps="plotsteps",
  5949.         *plotstep="plotstep",
  5950.         *tsteps="tsteps",
  5951.         *curve="curve",
  5952.         *dcurve="dcurve",
  5953.         *plot="plot",
  5954.         *dplot="dplot",
  5955.         *levelcurve="levelcurve",
  5956.         *fontsize="fontsize",
  5957.         *fontcolor="fontcolor",
  5958.         *axis="axis",
  5959.         *axisnumbering="axisnumbering",
  5960.         *axisnumbers="axisnumbers",
  5961.         *arrow="arrow",
  5962.         *darrow="darrow",
  5963.         *arrow2="arrow2",
  5964.         *darrow2="darrow2",
  5965.         *zoom="zoom",
  5966.         *grid="grid",
  5967.         *hline="hline",
  5968.         *dhline="dhline",
  5969.         *drag="drag",
  5970.         *horizontalline="horizontalline",
  5971.         *vline="vline",
  5972.         *dvline="dvline",
  5973.         *verticalline="verticalline",
  5974.         *triangle="triangle",
  5975.         *ftriangle="ftriangle",
  5976.         *mathml="mathml",
  5977.         *html="html",
  5978.         *input="input",
  5979.         *button="button",
  5980.         *inputstyle="inputstyle",
  5981.         *textarea="textarea",
  5982.         *trange="trange",
  5983.         *ranget="ranget",
  5984.         *xrange="xrange",
  5985.         *yrange="yrange",
  5986.         *rangex="rangex",
  5987.         *rangey="rangey",
  5988.         *polyline="polyline",
  5989.         *lines="lines",
  5990.         *poly="poly",
  5991.         *polygon="polygon",
  5992.         *fpolygon="fpolygon",
  5993.         *fpoly="fpoly",
  5994.         *filledpoly="filledpoly",
  5995.         *filledpolygon="filledpolygon",
  5996.         *rect="rect",
  5997.         *frect="frect",
  5998.         *rectangle="rectangle",
  5999.         *frectangle="frectangle",
  6000.         *square="square",
  6001.         *fsquare="fsquare",
  6002.         *dline="dline",
  6003.         *arc="arc",
  6004.         *filledarc="filledarc",
  6005.         *size="size",
  6006.         *string="string",
  6007.         *stringup="stringup",
  6008.         *copy="copy",
  6009.         *copyresized="copyresized",
  6010.         *opacity="opacity",
  6011.         *transparent="transparent",
  6012.         *fill="fill",
  6013.         *slider="slider",
  6014.         *point="point",
  6015.         *points="points",
  6016.         *linewidth="linewidth",
  6017.         *circle="circle",
  6018.         *fcircle="fcircle",
  6019.         *disk="disk",
  6020.         *comment="#",
  6021.         *end="end",
  6022.         *ellipse="ellipse",
  6023.         *fellipse="fellipse",
  6024.         *rotate="rotate",
  6025.         *affine="affine",
  6026.         *killaffine="killaffine",
  6027.         *fontfamily="fontfamily",
  6028.         *fillcolor="fillcolor",
  6029.         *clicktile="clicktile",
  6030.         *clicktile_colors="clicktile_colors",
  6031.         *translation="translation",
  6032.         *translate="translate",
  6033.         *killtranslation="killtranslation",
  6034.         *killtranslate="killtranslate",
  6035.         *onclick="onclick",
  6036.         *roundrect="roundrect",
  6037.         *froundrect="froundrect",
  6038.         *roundrectangle="roundrectangle",
  6039.         *patternfill="patternfill",
  6040.         *hatchfill="hatchfill",
  6041.         *diafill="diafill",
  6042.         *diamondfill="diamondfill",
  6043.         *dotfill="dotfill",
  6044.         *gridfill="gridfill",
  6045.         *imagefill="imagefill",
  6046.         *xlogbase="xlogbase",
  6047.         *ylogbase="ylogbase",
  6048.         *xlogscale="xlogscale",
  6049.         *ylogscale="ylogscale",
  6050.         *xylogscale="xylogscale",
  6051.         *intooltip="intooltip",
  6052.         *replyformat="replyformat",
  6053.         *floodfill="floodfill",
  6054.         *filltoborder="filltoborder",
  6055.         *clickfill="clickfill",
  6056.         *setpixel="setpixel",
  6057.         *pixels="pixels",
  6058.         *pixelsize="pixelsize",
  6059.         *clickfillmarge="clickfillmarge",
  6060.         *xaxis="xaxis",
  6061.         *yaxis="yaxis",
  6062.         *xaxistext="xaxistext",
  6063.         *yaxistext="yaxistext",
  6064.         *piechart="piechart",
  6065.         *legend="legend",
  6066.         *legendcolors="legendcolors",
  6067.         *xlabel="xlabel",
  6068.         *ylabel="ylabel",
  6069.         *barchart="barchart",
  6070.         *linegraph="linegraph",
  6071.         *clock="clock",
  6072.         *animate="animate",
  6073.         *video="video",
  6074.         *status="status",
  6075.         *snaptogrid="snaptogrid",
  6076.         *xsnaptogrid="xsnaptogrid",
  6077.         *ysnaptogrid="ysnaptogrid",
  6078.         *userinput_xy="userinput_xy",
  6079.         *usertextarea_xy="usertextarea_xy",
  6080.         *sgraph="sgraph";
  6081.  
  6082.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6083.             if( i == 0 && (c == ' ' || c == '\t') ){
  6084.         continue; /* white spaces or tabs allowed before first command identifier */
  6085.             }
  6086.             else
  6087.             {
  6088.         if( c == ' ' || c == '\t' ){
  6089.             break;
  6090.         }
  6091.         else
  6092.         {
  6093.             temp[i] = c;
  6094.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6095.             i++;
  6096.         }
  6097.             }
  6098.             if(temp[0] == '#') break;
  6099.         }
  6100.         if (c == EOF) finished = 1;
  6101.  
  6102.         if (c == '\n' || c == '\r') {
  6103.         line_number++;
  6104.         if (i == 0) { return EMPTY; }
  6105.         } else if (c == EOF) {
  6106.         return 0;
  6107.         }
  6108.  
  6109.         temp[i]='\0';
  6110.         input_type=(char*)my_newmem(strlen(temp));
  6111.         snprintf(input_type,sizeof(temp),"%s",temp);
  6112.  
  6113.         if( strcmp(input_type, size) == 0 ){
  6114.         free(input_type);
  6115.         return SIZE;
  6116.         }
  6117.         if( strcmp(input_type, xrange) == 0 ){
  6118.         free(input_type);
  6119.         return XRANGE;
  6120.         }
  6121.         if( strcmp(input_type, rangex) == 0 ){
  6122.         free(input_type);
  6123.         return XRANGE;
  6124.         }
  6125.         if( strcmp(input_type, trange) == 0 ){
  6126.         free(input_type);
  6127.         return TRANGE;
  6128.         }
  6129.         if( strcmp(input_type, ranget) == 0 ){
  6130.         free(input_type);
  6131.         return TRANGE;
  6132.         }
  6133.         if( strcmp(input_type, yrange) == 0 ){
  6134.         free(input_type);
  6135.         return YRANGE;
  6136.         }
  6137.         if( strcmp(input_type, rangey) == 0 ){
  6138.         free(input_type);
  6139.         return YRANGE;
  6140.         }
  6141.         if( strcmp(input_type, linewidth) == 0 ){
  6142.         free(input_type);
  6143.         return LINEWIDTH;
  6144.         }
  6145.         if( strcmp(input_type, dashed) == 0 ){
  6146.         free(input_type);
  6147.         return DASHED;
  6148.         }
  6149.         if( strcmp(input_type, dashtype) == 0 ){
  6150.         free(input_type);
  6151.         return DASHTYPE;
  6152.         }
  6153.         if( strcmp(input_type, axisnumbering) == 0 ){
  6154.         free(input_type);
  6155.         return AXIS_NUMBERING;
  6156.         }
  6157.         if( strcmp(input_type, axisnumbers) == 0 ){
  6158.         free(input_type);
  6159.         return AXIS_NUMBERING;
  6160.         }
  6161.         if( strcmp(input_type, axis) == 0 ){
  6162.         free(input_type);
  6163.         return AXIS;
  6164.         }
  6165.         if( strcmp(input_type, grid) == 0 ){
  6166.         free(input_type);
  6167.         return GRID;
  6168.         }
  6169.         if( strcmp(input_type, parallel) == 0 ){
  6170.         free(input_type);
  6171.         return PARALLEL;
  6172.         }
  6173.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6174.         free(input_type);
  6175.         return HLINE;
  6176.         }
  6177.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6178.         free(input_type);
  6179.         return VLINE;
  6180.         }
  6181.         if( strcmp(input_type, line) == 0 ){
  6182.         free(input_type);
  6183.         return LINE;
  6184.         }
  6185.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6186.         free(input_type);
  6187.         return SEGMENT;
  6188.         }
  6189.         if( strcmp(input_type, dsegment) == 0 ){
  6190.         free(input_type);
  6191.         use_dashed = TRUE;
  6192.         return SEGMENT;
  6193.         }
  6194.         if( strcmp(input_type, crosshairsize) == 0 ){
  6195.         free(input_type);
  6196.         return CROSSHAIRSIZE;
  6197.         }
  6198.         if( strcmp(input_type, arrowhead) == 0 ){
  6199.         free(input_type);
  6200.         return ARROWHEAD;
  6201.         }
  6202.         if( strcmp(input_type, crosshairs) == 0 ){
  6203.         free(input_type);
  6204.         return CROSSHAIRS;
  6205.         }
  6206.         if( strcmp(input_type, crosshair) == 0 ){
  6207.         free(input_type);
  6208.         return CROSSHAIR;
  6209.         }
  6210.         if( strcmp(input_type, onclick) == 0 ){
  6211.         free(input_type);
  6212.         return ONCLICK;
  6213.         }
  6214.         if( strcmp(input_type, drag) == 0 ){
  6215.         free(input_type);
  6216.         return DRAG;
  6217.         }
  6218.         if( strcmp(input_type, userdraw) == 0 ){
  6219.         free(input_type);
  6220.         return USERDRAW;
  6221.         }
  6222.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  6223.         free(input_type);
  6224.         return STYLE;
  6225.         }
  6226.         if( strcmp(input_type, fillcolor) == 0 ){
  6227.         free(input_type);
  6228.         return FILLCOLOR;
  6229.         }
  6230.         if( strcmp(input_type, strokecolor) == 0 ){
  6231.         free(input_type);
  6232.         return STROKECOLOR;
  6233.         }
  6234.         if( strcmp(input_type, filled) == 0  ){
  6235.         free(input_type);
  6236.         return FILLED;
  6237.         }
  6238.         if( strcmp(input_type, http) == 0 ){
  6239.         free(input_type);
  6240.         return HTTP;
  6241.         }
  6242.         if( strcmp(input_type, rays) == 0 ){
  6243.         free(input_type);
  6244.         return RAYS;
  6245.         }
  6246.         if( strcmp(input_type, lattice) == 0 ){
  6247.         free(input_type);
  6248.         return LATTICE;
  6249.         }
  6250.         if( strcmp(input_type, bgimage) == 0 ){
  6251.         free(input_type);
  6252.         return BGIMAGE;
  6253.         }
  6254.         if( strcmp(input_type, bgcolor) == 0 ){
  6255.         free(input_type);
  6256.         return BGCOLOR;
  6257.         }
  6258.         if( strcmp(input_type, backgroundimage) == 0 ){
  6259.         free(input_type);
  6260.         return BGIMAGE;
  6261.         }
  6262.         if( strcmp(input_type, text) == 0 ){
  6263.         free(input_type);
  6264.         return FLY_TEXT;
  6265.         }
  6266.         if( strcmp(input_type, textup) == 0 ){
  6267.         free(input_type);
  6268.         return FLY_TEXTUP;
  6269.         }
  6270.         if( strcmp(input_type, mouse) == 0 ){
  6271.         free(input_type);
  6272.         return MOUSE;
  6273.         }
  6274.         if( strcmp(input_type, mouseprecision) == 0 ){
  6275.         free(input_type);
  6276.         return MOUSE_PRECISION;
  6277.         }
  6278.         if( strcmp(input_type, precision) == 0 ){
  6279.         free(input_type);
  6280.         return MOUSE_PRECISION;
  6281.         }
  6282.         if( strcmp(input_type, curve) == 0 ){
  6283.         free(input_type);
  6284.         return CURVE;
  6285.         }
  6286.         if( strcmp(input_type, dcurve) == 0 ){
  6287.         use_dashed = TRUE;
  6288.         free(input_type);
  6289.         return CURVE;
  6290.         }
  6291.         if( strcmp(input_type, plot) == 0 ){
  6292.         free(input_type);
  6293.         return CURVE;
  6294.         }
  6295.         if( strcmp(input_type, dplot) == 0 ){
  6296.         use_dashed = TRUE;
  6297.         free(input_type);
  6298.         return CURVE;
  6299.         }
  6300.         if( strcmp(input_type, levelcurve) == 0 ){
  6301.         free(input_type);
  6302.         return LEVELCURVE;
  6303.         }
  6304.         if( strcmp(input_type, plotsteps) == 0 ){
  6305.         free(input_type);
  6306.         return PLOTSTEPS;
  6307.         }
  6308.         if( strcmp(input_type, plotstep) == 0 ){
  6309.         free(input_type);
  6310.         return PLOTSTEPS;
  6311.         }
  6312.         if( strcmp(input_type, tsteps) == 0 ){
  6313.         free(input_type);
  6314.         return PLOTSTEPS;
  6315.         }
  6316.         if( strcmp(input_type, fontsize) == 0 ){
  6317.         free(input_type);
  6318.         return FONTSIZE;
  6319.         }
  6320.         if( strcmp(input_type, fontcolor) == 0 ){
  6321.         free(input_type);
  6322.         return FONTCOLOR;
  6323.         }
  6324.         if( strcmp(input_type, arrow) == 0 ){
  6325.         free(input_type);
  6326.         return ARROW;
  6327.         }
  6328.         if( strcmp(input_type, arrow2) == 0 ){
  6329.         free(input_type);
  6330.         return ARROW2;
  6331.         }
  6332.         if( strcmp(input_type, darrow) == 0 ){
  6333.         free(input_type);
  6334.         return ARROW;
  6335.         }
  6336.         if( strcmp(input_type, darrow2) == 0 ){
  6337.         free(input_type);
  6338.         use_dashed = TRUE;
  6339.         return ARROW2;
  6340.         }
  6341.         if( strcmp(input_type, zoom) == 0 ){
  6342.         free(input_type);
  6343.         return ZOOM;
  6344.         }
  6345.         if( strcmp(input_type, triangle) == 0 ){
  6346.         free(input_type);
  6347.         return TRIANGLE;
  6348.         }
  6349.         if( strcmp(input_type, ftriangle) == 0 ){
  6350.         free(input_type);
  6351.         use_filled = TRUE;
  6352.         return TRIANGLE;
  6353.         }
  6354.         if( strcmp(input_type, input) == 0 ){
  6355.         free(input_type);
  6356.         return INPUT;
  6357.         }
  6358.         if( strcmp(input_type, inputstyle) == 0 ){
  6359.         free(input_type);
  6360.         return INPUTSTYLE;
  6361.         }
  6362.         if( strcmp(input_type, textarea) == 0 ){
  6363.         free(input_type);
  6364.         return TEXTAREA;
  6365.         }
  6366.         if( strcmp(input_type, mathml) == 0 ){
  6367.         free(input_type);
  6368.         return MATHML;
  6369.         }
  6370.         if( strcmp(input_type, html) == 0 ){
  6371.         free(input_type);
  6372.         return MATHML;
  6373.         }
  6374.         if( strcmp(input_type, fontfamily) == 0 ){
  6375.         free(input_type);
  6376.         return FONTFAMILY;
  6377.         }
  6378.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  6379.         free(input_type);
  6380.         return POLYLINE;
  6381.         }
  6382.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  6383.         free(input_type);
  6384.         return RECT;
  6385.         }
  6386.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  6387.         free(input_type);
  6388.         return ROUNDRECT;
  6389.         }
  6390.         if( strcmp(input_type, froundrect) == 0 ){
  6391.         free(input_type);
  6392.         use_filled = TRUE;
  6393.         return ROUNDRECT;
  6394.         }
  6395.         if( strcmp(input_type, square) == 0 ){
  6396.         free(input_type);
  6397.         return SQUARE;
  6398.         }
  6399.         if( strcmp(input_type, fsquare) == 0 ){
  6400.         free(input_type);
  6401.         use_filled = TRUE;
  6402.         return SQUARE;
  6403.         }
  6404.         if( strcmp(input_type, dline) == 0 ){
  6405.         use_dashed = TRUE;
  6406.         free(input_type);
  6407.         return LINE;
  6408.         }
  6409.         if( strcmp(input_type, dvline) == 0 ){
  6410.         use_dashed = TRUE;
  6411.         free(input_type);
  6412.         return VLINE;
  6413.         }
  6414.         if( strcmp(input_type, dhline) == 0 ){
  6415.         use_dashed = TRUE;
  6416.         free(input_type);
  6417.         return HLINE;
  6418.         }
  6419.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  6420.         use_filled = TRUE;
  6421.         free(input_type);
  6422.         return RECT;
  6423.         }
  6424.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  6425.         use_filled = TRUE;
  6426.         free(input_type);
  6427.         return CIRCLE;
  6428.         }
  6429.         if( strcmp(input_type, circle) == 0 ){
  6430.         free(input_type);
  6431.         return CIRCLE;
  6432.         }
  6433.         if( strcmp(input_type, point) == 0 ){
  6434.         free(input_type);
  6435.         return POINT;
  6436.         }
  6437.         if( strcmp(input_type, points) == 0 ){
  6438.         free(input_type);
  6439.         return POINTS;
  6440.         }
  6441.         if( strcmp(input_type, filledarc) == 0 ){
  6442.         use_filled = TRUE;
  6443.         free(input_type);
  6444.         return ARC;
  6445.         }
  6446.         if( strcmp(input_type, arc) == 0 ){
  6447.         free(input_type);
  6448.         return ARC;
  6449.         }
  6450.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  6451.         free(input_type);
  6452.         return POLY;
  6453.         }
  6454.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  6455.         use_filled = TRUE;
  6456.         free(input_type);
  6457.         return POLY;
  6458.         }
  6459.         if( strcmp(input_type, ellipse) == 0){
  6460.         free(input_type);
  6461.         return ELLIPSE;
  6462.         }
  6463.         if( strcmp(input_type, fill) == 0 ){
  6464.         free(input_type);
  6465.         return FLOODFILL;
  6466.         }
  6467.         if( strcmp(input_type, string) == 0 ){
  6468.         free(input_type);
  6469.         return STRING;
  6470.         }
  6471.         if( strcmp(input_type, stringup) == 0 ){
  6472.         free(input_type);
  6473.         return STRINGUP;
  6474.         }
  6475.         if( strcmp(input_type, opacity) == 0 ){
  6476.         free(input_type);
  6477.         return OPACITY;
  6478.         }
  6479.         if( strcmp(input_type, comment) == 0){
  6480.         free(input_type);
  6481.         return COMMENT;
  6482.         }
  6483.         if( strcmp(input_type, end) == 0){
  6484.         free(input_type);
  6485.         return END;
  6486.         }
  6487.         if( strcmp(input_type, fellipse) == 0){
  6488.         free(input_type);
  6489.         use_filled = TRUE;
  6490.         return ELLIPSE;
  6491.         }      
  6492.         if( strcmp(input_type, blink) == 0 ){
  6493.         free(input_type);
  6494.         return BLINK;
  6495.         }
  6496.         if( strcmp(input_type, button) == 0){
  6497.         free(input_type);
  6498.         return BUTTON;
  6499.         }
  6500.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  6501.         free(input_type);
  6502.         return TRANSLATION;
  6503.         }
  6504.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  6505.         free(input_type);
  6506.         return KILLTRANSLATION;
  6507.         }
  6508.         if( strcmp(input_type, rotate) == 0){
  6509.         free(input_type);
  6510.         return ROTATE;
  6511.         }
  6512.         if( strcmp(input_type, affine) == 0){
  6513.         free(input_type);
  6514.         return AFFINE;
  6515.         }
  6516.         if( strcmp(input_type, killaffine) == 0){
  6517.         free(input_type);
  6518.         return KILLAFFINE;
  6519.         }
  6520.         if( strcmp(input_type, audio) == 0 ){
  6521.         free(input_type);
  6522.         return AUDIO;
  6523.         }
  6524.         if( strcmp(input_type, audioobject) == 0 ){
  6525.         free(input_type);
  6526.         return AUDIOOBJECT;
  6527.         }
  6528.         if( strcmp(input_type, slider) == 0 ){
  6529.         free(input_type);
  6530.         return SLIDER;
  6531.         }
  6532.         if( strcmp(input_type, copy) == 0 ){
  6533.         free(input_type);
  6534.         return COPY;
  6535.         }
  6536.         if( strcmp(input_type, copyresized) == 0 ){
  6537.         free(input_type);
  6538.         return COPYRESIZED;
  6539.         }
  6540.         if( strcmp(input_type, patternfill) == 0 ){
  6541.         free(input_type);
  6542.         return PATTERNFILL;
  6543.         }
  6544.         if( strcmp(input_type, hatchfill) == 0 ){
  6545.         free(input_type);
  6546.         return HATCHFILL;
  6547.         }
  6548.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  6549.         free(input_type);
  6550.         return DIAMONDFILL;
  6551.         }
  6552.         if( strcmp(input_type, dotfill) == 0 ){
  6553.         free(input_type);
  6554.         return DOTFILL;
  6555.         }
  6556.         if( strcmp(input_type, gridfill) == 0 ){
  6557.         free(input_type);
  6558.         return GRIDFILL;
  6559.         }
  6560.         if( strcmp(input_type, imagefill) == 0 ){
  6561.         free(input_type);
  6562.         return IMAGEFILL;
  6563.         }
  6564.         if( strcmp(input_type, clicktile_colors) == 0 ){
  6565.         free(input_type);
  6566.         return CLICKTILE_COLORS;
  6567.         }
  6568.         if( strcmp(input_type, clicktile) == 0 ){
  6569.         free(input_type);
  6570.         return CLICKTILE;
  6571.         }
  6572.         if( strcmp(input_type, xlogscale) == 0 ){
  6573.         free(input_type);
  6574.         return XLOGSCALE;
  6575.         }
  6576.         if( strcmp(input_type, ylogscale) == 0 ){
  6577.         free(input_type);
  6578.         return YLOGSCALE;
  6579.         }
  6580.         if( strcmp(input_type, xylogscale) == 0 ){
  6581.         free(input_type);
  6582.         return XYLOGSCALE;
  6583.         }
  6584.         if( strcmp(input_type, ylogscale) == 0 ){
  6585.         free(input_type);
  6586.         return YLOGSCALE;
  6587.         }
  6588.         if( strcmp(input_type, xlogbase) == 0 ){
  6589.         free(input_type);
  6590.         return XLOGBASE;
  6591.         }
  6592.         if( strcmp(input_type, ylogbase) == 0 ){
  6593.         free(input_type);
  6594.         return YLOGBASE;
  6595.         }
  6596.         if( strcmp(input_type, intooltip) == 0 ){
  6597.         free(input_type);
  6598.         return INTOOLTIP;
  6599.         }
  6600.         if( strcmp(input_type,video) == 0 ){
  6601.         free(input_type);
  6602.         return VIDEO;
  6603.         }
  6604.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  6605.         free(input_type);
  6606.         return FLOODFILL;
  6607.         }      
  6608.         if( strcmp(input_type,filltoborder) == 0 ){
  6609.         free(input_type);
  6610.         return FILLTOBORDER;
  6611.         }      
  6612.         if( strcmp(input_type,clickfill) == 0 ){
  6613.         free(input_type);
  6614.         return CLICKFILL;
  6615.         }      
  6616.         if( strcmp(input_type, replyformat) == 0 ){
  6617.         free(input_type);
  6618.         return REPLYFORMAT;
  6619.         }
  6620.         if( strcmp(input_type, pixelsize) == 0 ){
  6621.         free(input_type);
  6622.         return PIXELSIZE;
  6623.         }
  6624.         if( strcmp(input_type, setpixel) == 0 ){
  6625.         free(input_type);
  6626.         return SETPIXEL;
  6627.         }
  6628.         if( strcmp(input_type, pixels) == 0 ){
  6629.         free(input_type);
  6630.         return PIXELS;
  6631.         }
  6632.         if( strcmp(input_type, clickfillmarge) == 0 ){
  6633.         free(input_type);
  6634.         return CLICKFILLMARGE;
  6635.         }
  6636.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  6637.         free(input_type);
  6638.         return X_AXIS_STRINGS;
  6639.         }
  6640.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  6641.         free(input_type);
  6642.         return Y_AXIS_STRINGS;
  6643.         }
  6644.         if( strcmp(input_type, piechart) == 0  ){
  6645.         free(input_type);
  6646.         return PIECHART;
  6647.         }
  6648.         if( strcmp(input_type, barchart) == 0  ){
  6649.         free(input_type);
  6650.         return BARCHART;
  6651.         }
  6652.         if( strcmp(input_type, linegraph) == 0  ){
  6653.         free(input_type);
  6654.         return LINEGRAPH;
  6655.         }
  6656.         if( strcmp(input_type, clock) == 0  ){
  6657.         free(input_type);
  6658.         return CLOCK;
  6659.         }
  6660.         if( strcmp(input_type, legend) == 0  ){
  6661.         free(input_type);
  6662.         return LEGEND;
  6663.         }
  6664.         if( strcmp(input_type, legendcolors) == 0  ){
  6665.         free(input_type);
  6666.         return LEGENDCOLORS;
  6667.         }
  6668.         if( strcmp(input_type, xlabel) == 0  ){
  6669.         free(input_type);
  6670.         return XLABEL;
  6671.         }
  6672.         if( strcmp(input_type, ylabel) == 0  ){
  6673.         free(input_type);
  6674.         return YLABEL;
  6675.         }
  6676.         if( strcmp(input_type, animate) == 0  ){
  6677.         free(input_type);
  6678.         return ANIMATE;
  6679.         }
  6680.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  6681.         if( strcmp(input_type, transparent) == 0 ){
  6682.         free(input_type);
  6683.         return TRANSPARENT;
  6684.         }
  6685.         if( strcmp(input_type, status) == 0 ){
  6686.         free(input_type);
  6687.         return STATUS;
  6688.         }
  6689.         if( strcmp(input_type, snaptogrid) == 0 ){
  6690.         free(input_type);
  6691.         return SNAPTOGRID;
  6692.         }
  6693.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  6694.         free(input_type);
  6695.         return XSNAPTOGRID;
  6696.         }
  6697.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  6698.         free(input_type);
  6699.         return YSNAPTOGRID;
  6700.         }
  6701.         if( strcmp(input_type, userinput_xy) == 0 ){
  6702.         free(input_type);
  6703.         return USERINPUT_XY;
  6704.         }
  6705.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  6706.         free(input_type);
  6707.         return USERTEXTAREA_XY;
  6708.         }
  6709.         if( strcmp(input_type, sgraph) == 0 ){
  6710.         free(input_type);
  6711.         return SGRAPH;
  6712.         }
  6713.         free(input_type);
  6714.         ungetc(c,infile);
  6715.         return 0;
  6716. }
  6717.  
  6718.  
  6719.