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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.  
  13. #include "../../Lib/libwims.h"
  14. #include "canvasdraw.h"
  15. #include <assert.h>
  16. #include "canvasmacro.c"
  17.  
  18. /******************************************************************************
  19. **  Internal Functions
  20. ******************************************************************************/
  21. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  22. void    sync_input(FILE *infile);/* proceed with inputfile */
  23. void    canvas_error(char *msg);
  24. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  25. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  26. int     get_token(FILE *infile); /* read next char until EOL*/
  27. int     x2px(double x);
  28. int     y2px(double y);
  29. double  px2x(int x);
  30. double  px2y(int y);
  31. double  get_real(FILE *infile,int last); /* read a values; calculation and symbols allowed */
  32. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  33. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  34. char    *get_string(FILE *infile,int last); /* get the string at theend of a command */
  35. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  36. char    *convert_hex2rgb(char *hexcolor);
  37. void    add_read_canvas(int reply_format);
  38. void    make_js_include(int canvas_root_id);
  39. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  40. FILE    *js_include_file;
  41. FILE    *get_file(int *line_number, char **filename);
  42. FILE    *infile;    /* will be stdin */
  43. /******************************************************************************
  44. ** global
  45. ******************************************************************************/
  46. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  47. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  48. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  49. int xsize = 320;
  50. int ysize = 320;
  51. double xmin = 0.0;
  52. double xmax = 320.0;
  53. double ymin = 0.0;
  54. double ymax = 320.0;
  55. double tmax = 2;
  56. double tmin = -2;
  57. /* flag to indicate parsing of line status */
  58. int done = FALSE;
  59. int type; /* eg command number */
  60. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  61. int use_affine = FALSE;
  62. int use_rotate = FALSE;
  63. int use_translate = FALSE;
  64. int use_filled = FALSE;
  65. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  66. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  67.  
  68. /******************************************************************************
  69. ** Main Program
  70. ******************************************************************************/
  71. int main(int argc, char *argv[]){
  72.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  73.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  74.     infile = stdin;/* read flyscript via stdin */
  75.     int i,c;
  76.     double double_data[MAX_INT+1];
  77.     int int_data[MAX_INT+1];
  78.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  79.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  80.     int use_axis = FALSE;
  81.     int use_axis_numbering = FALSE;
  82.     int use_pan_and_zoom = FALSE;
  83.     int use_js_math = FALSE; /* if true add js-function to convert math_function --> javascript math_function */
  84.     int use_js_plot = FALSE; /* if true , let js-engine plot the curve */
  85.     int line_width = 1;
  86.     int decimals = 2;
  87.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  88.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  89.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  90.     int use_tooltip = FALSE;
  91.     char *tooltip_text = "Click here";
  92.     char *temp = ""; /* */
  93.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  94.     char *stroke_color = "255,0,0";
  95.     char *fill_color = "0,255,0";
  96.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  97.     char *font_color = "#00000";
  98.     char *draw_type = "points";
  99.     char *fly_font = "normal";
  100.     char *input_style = "";
  101.     char *flytext = "";
  102.     char *affine_matrix = "[1,0,0,1,0,0]";
  103.     int pixelsize = 1;
  104.     int reply_format = 0;
  105.     int input_cnt = 0;
  106.     int ext_img_cnt = 0;
  107.     int font_size = 12;
  108.     int dashtype[2] = { 2 , 2 };
  109.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  110.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  111.     int arrow_head = 8; /* size in px*/
  112.     int crosshair_size = 5; /* size in px*/
  113.     int plot_steps = 250;
  114.     int found_size_command = 0;
  115.     int click_cnt = 1;
  116.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  117.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  118.     double angle = 0.0;
  119.     int translate_x = 0;
  120.     int translate_y = 0;
  121.     int clickfillmarge = 20;
  122.     int animation_type = 9; /* == object type curve in drag library */
  123.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  124.     size_t string_length = 0;
  125.     double stroke_opacity = 0.8;
  126.     double fill_opacity = 0.8;
  127.     char *URL = "http://localhost/images";
  128.     memset(buffer,'\0',MAX_BUFFER);
  129.     void *tmp_buffer = "";
  130.    
  131.     /* default writing a unzipped js-include file into wims getfile directory */
  132.     char *w_wims_session = getenv("w_wims_session");
  133.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  134.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  135.     }
  136.     int L0=strlen(w_wims_session) + 21;
  137.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  138.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  139.     mode_t process_mask = umask(0); /* check if file exists */
  140.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  141.     if( result == 0 || errno == EEXIST ){
  142.      umask(process_mask); /* be sure to set correct permission */
  143.      char *w_session = getenv("w_session");
  144.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  145.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  146.      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 */   
  147.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  148.     /* now write file into getfile dir*/
  149.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  150.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  151.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  152.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  153.     js_include_file = fopen(location,"w");/* open the file location for writing */
  154.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  155.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  156.  
  157. /* ----------------------------------------------------- */
  158. /* while more lines to process */
  159.  
  160.     while(!finished){
  161.         if(line_number>1 && found_size_command == FALSE){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  162.         type = get_token(infile);
  163.         done = FALSE;
  164.         /*
  165.         @canvasdraw
  166.         @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...)
  167.         @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>
  168.         */
  169.         switch(type){
  170.         case END:
  171.         finished = 1;
  172.         done = TRUE;
  173.         break;
  174.         case 0:
  175.             sync_input(infile);
  176.             break;
  177.         case COMMENT:
  178.             sync_input(infile);
  179.             break;
  180.         case EMPTY:
  181.             sync_input(infile);
  182.             break;
  183.         case SIZE:
  184.             /*
  185.             @size width,height
  186.             @set canvas size in pixels
  187.             @mandatory first command
  188.             @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)
  189.             */
  190.             found_size_command = TRUE;
  191.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  192.             ysize = (int)(abs(round(get_real(infile,1))));
  193.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  194.             xmin = 0;xmax = xsize;
  195.             ymin = 0;ymax = ysize;
  196.  
  197. /*
  198.  The sequence in which stuff is finally printed is important !!
  199.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  200. */
  201. 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);
  202. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n");
  203. fprintf(stdout,"<!-- include actual object code via include file -->\n<script type=\"text/javascript\" src=\"%s\"></script>\n",getfile_cmd);
  204. fprintf(js_include_file,"var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  205. var xsize = %d;\
  206. var ysize = %d;\
  207. var precision = 100;\
  208. var canvas_div = document.getElementById(\"canvas_div%d\");\
  209. 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;};\
  210. 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;};\
  211. 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);};};\
  212. 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);};};\
  213. 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);};};\
  214. 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);};};\
  215. function scale_x_radius(rx){return parseInt(x2px(rx) - x2px(0));};\
  216. function scale_y_radius(ry){return parseInt(y2px(ry) - y2px(0));};\
  217. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  218. 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) ));};\
  219. 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;};\
  220. var xlogbase = 10;\
  221. var ylogbase = 10;\
  222. var use_xlogscale = 0;\
  223. var use_ylogscale = 0;\
  224. var x_strings = null;\
  225. var y_strings = null;\
  226. var use_pan_and_zoom = 0;\
  227. var x_use_snap_to_grid = 0;\
  228. var y_use_snap_to_grid = 0;\
  229. var use_jsmath = 0;\
  230. var xstart = 0;\
  231. var ystart = 0",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  232. /* default add the drag code : nearly always used ...*/
  233. add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  234.             break;
  235.         case XRANGE:
  236.         /*
  237.         @ xrange xmin,xmax
  238.         @ if not given: 0,xsize (eg in pixels)
  239.         */
  240.             for(i = 0 ; i<2; i++){
  241.                 switch(i){
  242.                     case 0: xmin = get_real(infile,0);break;
  243.                     case 1: xmax = get_real(infile,1);break;
  244.                     default: break;
  245.                 }
  246.             }
  247.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  248.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  249.             break;
  250.         case YRANGE:
  251.         /*
  252.         @ yrange ymin,ymax
  253.         @ if not given 0,ysize (eg in pixels)
  254.         */
  255.             for(i = 0 ; i<2; i++){
  256.                 switch(i){
  257.                     case 0: ymin = get_real(infile,0);break;
  258.                     case 1: ymax = get_real(infile,1);break;
  259.                     default: break;
  260.                 }
  261.             }
  262.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  263.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  264.             break;
  265.         case TRANGE:
  266.         /*
  267.         @ trange tmin,tmax
  268.         @ default -2,2
  269.         */
  270.             use_parametric = TRUE;
  271.             for(i = 0 ; i<2; i++){
  272.                 switch(i){
  273.                     case 0: tmin = get_real(infile,0);break;
  274.                     case 1: tmax = get_real(infile,1);break;
  275.                     default: break;
  276.                 }
  277.             }
  278.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  279.             break;
  280.         case LINEWIDTH:
  281.         /*
  282.         @ linewidth int
  283.         @ default 1
  284.         */
  285.             line_width = (int) (get_real(infile,1));
  286.             break;
  287.         case ARROWHEAD:
  288.         /*
  289.         @ arrowhead int
  290.         @ default 8 (pixels)
  291.         */
  292.             arrow_head = (int) (get_real(infile,1));
  293.             break;
  294.         case CROSSHAIRSIZE:
  295.         /*
  296.         @ crosshairsize int
  297.         @ default 10 (px)
  298.         */
  299.             crosshair_size = (int) (get_real(infile,1));
  300.             break;
  301.         case CROSSHAIR:
  302.         /*
  303.         @ crosshair x,y,color
  304.         @ draw a single crosshair point at (x;y) in color 'color'
  305.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  306.         @ may be set draggable / onclick
  307.         */
  308.             for(i=0;i<3;i++){
  309.                 switch(i){
  310.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  311.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  312.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  313.                         decimals = find_number_of_digits(precision);
  314.                         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);
  315.                         click_cnt++;reset();
  316.                         break;
  317.                     default:break;
  318.                 }
  319.             }
  320.             break;
  321.         case CROSSHAIRS:
  322.         /*
  323.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  324.         @ draw multiple crosshair points at given coordinates in color 'color'
  325.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  326.         @ may be set draggable / onclick individually (!)
  327.         */
  328.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  329.             fill_color = stroke_color;
  330.             i=0;
  331.             while( ! done ){     /* get next item until EOL*/
  332.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  333.                 if(i%2 == 0 ){
  334.                     double_data[i] = get_real(infile,0); /* x */
  335.                 }
  336.                 else
  337.                 {
  338.                     double_data[i] = get_real(infile,1); /* y */
  339.                 }
  340.                 i++;
  341.             }
  342.             decimals = find_number_of_digits(precision);
  343.             for(c=0 ; c < i-1 ; c = c+2){
  344.                 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);
  345.                 click_cnt++;
  346.             }
  347.             reset();
  348.             break;
  349.         case POINT:
  350.         /*
  351.         @ point x,y,color
  352.         @ draw a single point at (x;y) in color 'color'
  353.         @ use command 'linewidth int'  to adust size
  354.         @ may be set draggable / onclick
  355.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  356.         */
  357.             for(i=0;i<3;i++){
  358.                 switch(i){
  359.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  360.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  361.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  362.                     decimals = find_number_of_digits(precision);
  363.                     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);
  364.                     click_cnt++;break;
  365.                     default: break;
  366.                 }
  367.             }
  368.             reset();
  369.             break;
  370.         case POINTS:
  371.         /*
  372.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  373.         @ draw multiple points at given coordinates in color 'color'
  374.         @ use command 'linewidth int'  to adust size
  375.         @ may be set draggable / onclick individually (!)
  376.         */
  377.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  378.             fill_color = stroke_color;
  379.             i=0;
  380.             while( ! done ){     /* get next item until EOL*/
  381.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  382.                 if(i%2 == 0 ){
  383.                     double_data[i] = get_real(infile,0); /* x */
  384.                 }
  385.                 else
  386.                 {
  387.                     double_data[i] = get_real(infile,1); /* y */
  388.                 }
  389.                 i++;
  390.             }
  391.             decimals = find_number_of_digits(precision);           
  392.             for(c = 0 ; c < i-1 ; c = c+2){
  393.                 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);
  394.                 click_cnt++;
  395.             }
  396.             reset();
  397.             break;
  398.         case SEGMENT:
  399.         /*
  400.         @ segment x1,y1,x2,y2,color
  401.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  402.         @ may be set draggable / onclick
  403.         */
  404.             for(i=0;i<5;i++) {
  405.                 switch(i){
  406.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  407.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  408.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  409.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  410.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  411.                         decimals = find_number_of_digits(precision);
  412.                         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);
  413.                         click_cnt++;reset();
  414.                         break;
  415.                     default: break;
  416.                 }
  417.             }
  418.             break;
  419.         case LINE:
  420.         /*
  421.         @ line x1,y1,x2,y2,color
  422.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  423.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  424.         @ may be set draggable / onclick
  425.         */
  426.             for(i=0;i<5;i++){
  427.                 switch(i){
  428.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  429.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  430.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  431.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  432.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  433.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  434.                         double_data[1] = xmin;
  435.                         double_data[3] = ymax;
  436.                         double_data[0] = double_data[10];
  437.                         double_data[2] = double_data[10];
  438.                     }
  439.                     else
  440.                     {
  441.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  442.                             double_data[1] = double_data[11];
  443.                             double_data[3] = double_data[11];
  444.                             double_data[0] = ymin;
  445.                             double_data[2] = xmax;
  446.                         }
  447.                         else
  448.                         {
  449.                         /* m */
  450.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  451.                         /* q */
  452.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  453.                        
  454.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  455.                        
  456.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  457.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  458.                             double_data[0] = xmin;
  459.                             double_data[2] = xmax;
  460.                         }
  461.                     }
  462.                     decimals = find_number_of_digits(precision);
  463.                     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);
  464.                     click_cnt++;reset();
  465.                     break;
  466.                 }
  467.             }
  468.             break;
  469.         case HLINE:
  470.         /*
  471.         @ hline x,y,color
  472.         @ draw a horizontal line through point (x:y) in color 'color'
  473.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  474.         @ may be set draggable / onclick
  475.         */
  476.             for(i=0;i<3;i++) {
  477.                 switch(i){
  478.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  479.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  480.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  481.                     double_data[3] = double_data[1];
  482.                     decimals = find_number_of_digits(precision);
  483.                     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);
  484.                     click_cnt++;reset();
  485.                     break;
  486.                 }
  487.             }
  488.             break;
  489.         case VLINE:
  490.         /*
  491.         @ vline x,y,color
  492.         @ draw a vertical line through point (x:y) in color 'color'
  493.         @ may be set draggable / onclick
  494.         */
  495.             for(i=0;i<3;i++) {
  496.                 switch(i){
  497.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  498.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  499.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  500.                         double_data[2] = double_data[0];
  501.                         decimals = find_number_of_digits(precision);
  502.                         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);
  503.                         click_cnt++;reset();
  504.                     break;
  505.                 }
  506.             }
  507.             break;
  508.         case SQUARE:
  509.         /*
  510.         @ square x,y,side,color
  511.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  512.         @ use command 'fsquare x,y,side,color' for a filled square
  513.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  514.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  515.         @ may be set draggable / onclick
  516.         */
  517.             for(i=0;i<5;i++){
  518.                 switch(i){
  519.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  520.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  521.                     case 2:double_data[2] = get_real(infile,0);
  522.                            double_data[3] = double_data[2];
  523.                            break; /* x-values */
  524.                     case 3:stroke_color = get_color(infile,1);/* name or hex color */
  525.                         decimals = find_number_of_digits(precision);
  526.                         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);
  527.                         click_cnt++;reset();
  528.                         break;
  529.                 }
  530.             }
  531.             break;
  532.         case ROUNDRECT:
  533.         /*
  534.         @ roundrect x1,y1,x2,y2,radius,color
  535.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  536.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  537.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  538.         @ may be set draggable / onclick
  539.         */
  540.             for(i=0;i<6;i++){
  541.                 switch(i){
  542.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  543.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  544.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  545.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  546.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  547.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  548.                         decimals = find_number_of_digits(precision);
  549.                         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);
  550.                         click_cnt++;reset();
  551.                     break;
  552.                 }
  553.             }
  554.             break;
  555.         case RECT:
  556.         /*
  557.         @ rect x1,y1,x2,y2,color
  558.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  559.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  560.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  561.         @ may be set draggable / onclick
  562.         */
  563.             for(i=0;i<5;i++){
  564.                 switch(i){
  565.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  566.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  567.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  568.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  569.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  570.                         decimals = find_number_of_digits(precision);
  571.                         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);
  572.                         click_cnt++;reset();
  573.                         break;
  574.                 }
  575.             }
  576.             break;
  577.         case POLYLINE:
  578.         /*
  579.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  580.         @ may be set draggable / onclick
  581.         */
  582.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  583.             i=0;
  584.             c=0;
  585.             while( ! done ){     /* get next item until EOL*/
  586.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  587.                 for( c = 0 ; c < 2; c++){
  588.                     if(c == 0 ){
  589.                         double_data[i] = get_real(infile,0);
  590.                         i++;
  591.                     }
  592.                     else
  593.                     {
  594.                         double_data[i] = get_real(infile,1);
  595.                         i++;
  596.                     }
  597.                 }
  598.             }
  599.             /* draw path : not closed & not filled */
  600.             decimals = find_number_of_digits(precision);
  601.             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);
  602.             click_cnt++;reset();
  603.             break;
  604.         case POLY:
  605.         /*
  606.         @ poly color,x1,y1,x2,y2...x_n,y_n
  607.         @ draw closed polygon
  608.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  609.         @ may be set draggable / onclick
  610.         */
  611.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  612.             i=0;
  613.             c=0;
  614.             while( ! done ){     /* get next item until EOL*/
  615.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  616.                 for( c = 0 ; c < 2; c++){
  617.                     if(c == 0 ){
  618.                         double_data[i] = get_real(infile,0);
  619.                         i++;
  620.                     }
  621.                     else
  622.                     {
  623.                         double_data[i] = get_real(infile,1);
  624.                         i++;
  625.                     }
  626.                 }
  627.             }
  628.             /* draw path :  closed & optional filled */
  629.                 decimals = find_number_of_digits(precision);
  630.                 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);
  631.                 click_cnt++;reset();
  632.             break;
  633.         case ARC:
  634.         /*
  635.          @ arc xc,yc,width,height,start_angle,end_angle,color
  636.          @ can not be set "onclick" or "drag xy"
  637.          @ attention: width == height == radius in pixels)
  638.         */
  639.             for(i=0;i<7;i++){
  640.                 switch(i){
  641.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  642.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  643.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  644.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  645.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  646.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  647.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  648.                     /* in Shape library:
  649.                         x[0] = x[1] = xc
  650.                         y[0] = y[1] = yc
  651.                         w[0] = w[1] = radius = width = height  
  652.                         h[0] = start_angle ; h[1] = end_engle
  653.                     */
  654.                         decimals = find_number_of_digits(precision);
  655.                         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);
  656.                         reset();
  657.                     break;
  658.                 }
  659.             }
  660.             break;
  661.         case ELLIPSE:
  662.         /*
  663.         @ ellipse xc,yc,radius_x,radius_y,color
  664.         @ a ellipse with center xc/yc in x/y-range
  665.         @ radius_x and radius_y are in pixels
  666.         @ may be set draggable / onclick
  667.         @ will shrink / expand on zoom out / zoom in
  668.         */
  669.             for(i=0;i<5;i++){
  670.                 switch(i){
  671.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  672.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  673.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  674.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  675.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  676.                         decimals = find_number_of_digits(precision);
  677.                         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);
  678.                         click_cnt++;reset();
  679.                     break;
  680.                 }
  681.             }
  682.             break;
  683.         case DASHTYPE:
  684.         /*
  685.         @ dashtype int ,int
  686.         @ When dashed is set, the objects will be drawn with this dashtyp
  687.         @ default value "dashtype 2,2"
  688.         */
  689.             for(i=0;i<2;i++){
  690.                 switch(i){
  691.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  692.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  693.                 }
  694.             }
  695.         break;
  696.         case CIRCLE:
  697.         /*
  698.         @ circle xc,yc,width (2*r in pixels),color
  699.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  700.         @ use command 'fillcolor color' to set the fillcolor
  701.         @ may be set draggable / onclick
  702.         @ will shrink / expand on zoom out / zoom in
  703.         */
  704.             for(i=0;i<4;i++){
  705.                 switch(i){
  706.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  707.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  708.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* radius in 'dx' xrange*/
  709.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  710.                         decimals = find_number_of_digits(precision);
  711.                         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);
  712.                         click_cnt++;reset();
  713.                     break;
  714.                 }
  715.             }
  716.             break;
  717.         case RAYS:
  718.         /*
  719.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  720.          @ draw rays in color 'color' and center (xc:yc)
  721.          @ may be set draggable or onclick (every individual ray)
  722.         */
  723.             stroke_color=get_color(infile,0);
  724.             fill_color = stroke_color;
  725.             double_data[0] = get_real(infile,0);/* xc */
  726.             double_data[1] = get_real(infile,0);/* yc */
  727.             i=2;
  728.             while( ! done ){     /* get next item until EOL*/
  729.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  730.                 if(i%2 == 0 ){
  731.                     double_data[i] = get_real(infile,0); /* x */
  732.                 }
  733.                 else
  734.                 {
  735.                     double_data[i] = get_real(infile,1); /* y */
  736.                 }
  737.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  738.                 i++;
  739.             }
  740.            
  741.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  742.             decimals = find_number_of_digits(precision);           
  743.             for(c=2; c<i;c = c+2){
  744.                 click_cnt++;
  745.                 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);
  746.             }
  747.             reset();
  748.             break;
  749.         case ARROW:
  750.         /*
  751.         @ arrow x1,y1,x2,y2,h,color
  752.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  753.         @ use command 'linewidth int' to adjust thickness of the arrow
  754.         @ may be set draggable / onclick
  755.         */
  756.             for(i=0;i<6;i++){
  757.                 switch(i){
  758.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  759.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  760.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  761.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  762.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  763.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  764.                         decimals = find_number_of_digits(precision);
  765.                         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);
  766.                         click_cnt++;
  767.                         reset();
  768.                         break;
  769.                 }
  770.             }
  771.             break;
  772.         case ARROW2:
  773.         /*
  774.         @ arrow2 x1,y1,x2,y2,h,color
  775.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  776.         @ use command 'arrowhead int' to adjust the arrow head size
  777.         @ use command 'linewidth int' to adjust thickness of the arrow
  778.         @ may be set draggable / onclick
  779.         */
  780.             for(i=0;i<6;i++){
  781.                 switch(i){
  782.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  783.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  784.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  785.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  786.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  787.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  788.                         decimals = find_number_of_digits(precision);
  789.                         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);
  790.                         click_cnt++;reset();
  791.                         break;
  792.                 }
  793.             }
  794.             break;
  795.         case PARALLEL:
  796.         /*
  797.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  798.          @ can not be set "onclick" or "drag xy"
  799.         */
  800.             for( i = 0;i < 8; i++ ){
  801.                 switch(i){
  802.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  803.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  804.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  805.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  806.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  807.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  808.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  809.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  810.                     decimals = find_number_of_digits(precision);
  811.                     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);
  812.                     click_cnt++;reset();
  813.                     break;
  814.                     default: break;
  815.                 }
  816.             }
  817.             break;
  818.         case TRIANGLE:
  819.         /*
  820.          @triangle x1,y1,x2,y2,x3,y3,color
  821.          @may be set draggable / onclic
  822.         */
  823.             for(i=0;i<7;i++){
  824.                 switch(i){
  825.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  826.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  827.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  828.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  829.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  830.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  831.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  832.                         decimals = find_number_of_digits(precision);
  833.                         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);
  834.                         click_cnt++;reset();
  835.                         break;
  836.                     default: break;
  837.                 }
  838.             }
  839.             break;
  840.         case LATTICE:
  841.         /*
  842.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  843.          @can not be set "onclick" or "drag xy"
  844.         */
  845.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  846.             for( i = 0; i<9; i++){
  847.                 switch(i){
  848.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  849.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  850.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  851.                     case 3: int_data[3] = (int) (get_real(infile,0));break; /* y1-values  -> y-pixels*/
  852.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  853.                     case 5: int_data[5] = (int) (get_real(infile,0));break; /* y2-values  -> y-pixels*/
  854.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  855.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  856.                     case 8: stroke_color=get_color(infile,1);
  857.                         decimals = find_number_of_digits(precision);
  858.                         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);
  859.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  860.                         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);
  861.                         add_to_buffer(tmp_buffer);
  862.                     break;
  863.                     default:break;
  864.                 }
  865.             }
  866.             reset();
  867.             break;
  868.         case SNAPTOGRID:
  869.         /*
  870.          @ snaptogrid
  871.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  872.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  873.          @ 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 />
  874.         */
  875.         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");
  876.         break;
  877.         case XSNAPTOGRID:
  878.         /*
  879.          @ xsnaptogrid
  880.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  881.          @ in case of userdraw the drawn points will snap to xmajor grid
  882.          @ if xminor is defined, the drawing will snap to xminor <br />use only even dividers in x-minor...for example<br />xsnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  883.         */
  884.         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");
  885.         break;
  886.         case YSNAPTOGRID:
  887.         /*
  888.          @ ysnaptogrid
  889.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  890.          @ in case of userdraw the drawn points will snap to ymajor grid
  891.          @ if yminor is defined, the drawing will snap to yminor <br />use only even dividers in y-minor...for example<br />ysnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  892.         */
  893.         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");
  894.         break;
  895.         case USERTEXTAREA_XY:
  896.         /*
  897.         @ usertextarea_xy
  898.         @ keyword
  899.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  900.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  901.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  902.         @ user drawings will not zoom on zooming (or pan on panning)
  903.         */
  904.             if( use_input_xy != 0 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  905.             add_safe_eval(js_include_file);
  906.             use_input_xy = 2;
  907.             break;
  908.         case USERINPUT_XY:
  909.         /*
  910.         @ userinput_xy
  911.         @ keyword
  912.         @ to be used in combination with command "userdraw object_type,color"
  913.         @ 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)
  914.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  915.         @ 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.
  916.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  917.         @ user drawings will not zoom on zooming (or pan on panning)
  918.         */
  919.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  920.             if( use_input_xy != 0 ){canvas_error("userinput_xy can not be combined with usertextarea_xy command");}
  921.             add_safe_eval(js_include_file);
  922.             use_input_xy = 1;
  923.             break;
  924.         case USERDRAW:
  925.         /*
  926.         @ userdraw object_type,color
  927.         @ 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>
  928.         @ 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)
  929.         @ 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
  930.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  931.         @ 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)
  932.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  933.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  934.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  935.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  936.         @ may be combined with keyword 'userinput_xy' or
  937.         @ 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.!
  938.         */
  939.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  940.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  941.             }
  942.             use_userdraw = TRUE;
  943.             fprintf(js_include_file,"\n<!-- 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]);
  944.             draw_type = get_string_argument(infile,0);
  945.             stroke_color = get_color(infile,1);
  946.             if( strcmp(draw_type,"point") == 0 ){
  947.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  948.                 if(reply_format < 1 ){reply_format = 8;}
  949.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  950.                 if(use_input_xy == 1){
  951.                     add_input_circle(js_include_file,1,1);
  952.                     add_input_xy(js_include_file,canvas_root_id);
  953.                 }
  954.                 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);
  955.             }
  956.             else
  957.             if( strcmp(draw_type,"points") == 0 ){
  958.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  959.                 if(reply_format < 1 ){reply_format = 8;}
  960.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  961.                 if(use_input_xy == 1){
  962.                     add_input_circle(js_include_file,1,2);
  963.                     add_input_xy(js_include_file,canvas_root_id);
  964.                 }
  965.                 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);
  966.             }
  967.             else
  968.             if( strcmp(draw_type,"segment") == 0 ){
  969.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  970.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  971.                 if(reply_format < 1){reply_format = 11;}
  972.                 if(use_input_xy == 1){
  973.                     add_input_segment(js_include_file,1);
  974.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  975.                 }
  976.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  977.             }
  978.             else
  979.             if( strcmp(draw_type,"polyline") == 0 ){
  980.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  981.                 if(reply_format < 1){reply_format = 23;}
  982.                 if( use_input_xy == 1 ){
  983.                     add_input_polyline(js_include_file);
  984.                     add_input_xy(js_include_file,canvas_root_id);
  985.                 }
  986.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  987.             }
  988.             else
  989.             if( strcmp(draw_type,"segments") == 0 ){
  990.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  991.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  992.                 if(reply_format < 1){reply_format = 11;}
  993.                 if(use_input_xy == 1){
  994.                     add_input_segment(js_include_file,2);
  995.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  996.                 }
  997.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  998.             }
  999.             else
  1000.             if( strcmp(draw_type,"circle") == 0 ){
  1001.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1002.                 if(reply_format < 1){reply_format = 10;}
  1003.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1004.                 if(use_input_xy == 1){
  1005.                     add_input_circle(js_include_file,2,1);
  1006.                     add_input_xyr(js_include_file,canvas_root_id);
  1007.                 }
  1008.                 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]);
  1009.             }
  1010.             else
  1011.             if( strcmp(draw_type,"circles") == 0 ){
  1012.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1013.                 if(reply_format < 1){reply_format = 10;}
  1014.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1015.                 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]);
  1016.                 if(use_input_xy == 1){
  1017.                     add_input_circle(js_include_file,2,2);
  1018.                     add_input_xyr(js_include_file,canvas_root_id);
  1019.                 }
  1020.             }
  1021.             else
  1022.             if(strcmp(draw_type,"crosshair") == 0 ){
  1023.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1024.                 if(reply_format < 1){reply_format = 8;}
  1025.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1026.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1027.                 if(use_input_xy == 1){
  1028.                     add_input_crosshair(js_include_file,1);
  1029.                     add_input_xy(js_include_file,canvas_root_id);
  1030.                 }
  1031.             }
  1032.             else
  1033.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1034.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1035.                 if(reply_format < 1){reply_format = 8;}
  1036.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1037.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1038.                 if(use_input_xy == 1){
  1039.                     add_input_crosshair(js_include_file,2);
  1040.                     add_input_xy(js_include_file,canvas_root_id);
  1041.                 }
  1042.             }
  1043.             else
  1044.             if(strcmp(draw_type,"freehandline") == 0 ){
  1045.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1046.                 if(reply_format < 1){reply_format = 6;}
  1047.                 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]);  
  1048.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1049.             }
  1050.             else
  1051.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1052.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1053.                 if(reply_format < 1){reply_format = 6;}
  1054.                 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]);  
  1055.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1056.             }
  1057.             else
  1058.             if(strcmp(draw_type,"path") == 0 ){
  1059.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1060.                 if(reply_format < 1){reply_format = 6;}
  1061.                 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]);  
  1062.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1063.             }
  1064.             else
  1065.             if(strcmp(draw_type,"paths") == 0 ){
  1066.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1067.                 if(reply_format < 1){reply_format = 6;}
  1068.                 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]);  
  1069.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1070.             }
  1071.             else
  1072.             if(strcmp(draw_type,"arrows") == 0 ){
  1073.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1074.                 if(reply_format < 1){reply_format = 11;}
  1075.                 add_js_arrows(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1076.                 if(use_input_xy == 1){
  1077.                     add_input_arrow(js_include_file,2);
  1078.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1079.                 }
  1080.             }
  1081.             else
  1082.             if(strcmp(draw_type,"arrow") == 0 ){
  1083.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1084.                 if(reply_format < 1){reply_format = 11;}
  1085.                 add_js_arrows(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1086.                 if(use_input_xy == 1){
  1087.                     add_input_arrow(js_include_file,1);
  1088.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1089.                 }
  1090.             }
  1091.             else
  1092.             if(strcmp(draw_type,"polygon") == 0){
  1093.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1094.                 if(reply_format < 1){reply_format = 2;}
  1095.                 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]);
  1096.                 if( use_input_xy == 2 ){
  1097.                   add_textarea_polygon(js_include_file);
  1098.                   add_textarea_xy(js_include_file,canvas_root_id);
  1099.                 }
  1100.             }
  1101.             else
  1102.             if(strncmp(draw_type,"poly",4) == 0){
  1103.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1104.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1105.                 if(reply_format < 1){reply_format = 2;}
  1106.                 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]);
  1107.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1108.             }
  1109.             else
  1110.             if(strcmp(draw_type,"triangle") == 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,3,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 == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1115.             }
  1116.             else
  1117.             if( strcmp(draw_type,"line") == 0 ){
  1118.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1119.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1120.                 if(reply_format < 1){reply_format = 11;}
  1121.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1122.                 if( use_input_xy == 1 ){
  1123.                     add_input_line(js_include_file,1);
  1124.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1125.                 }
  1126.             }
  1127.             else
  1128.             if( strcmp(draw_type,"lines") == 0 ){
  1129.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1130.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1131.                 if(reply_format < 1){reply_format = 11;}
  1132.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1133.                 if( use_input_xy == 1 ){
  1134.                     add_input_line(js_include_file,2);
  1135.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1136.                 }
  1137.             }
  1138.             else
  1139.             if( strcmp(draw_type,"rects") == 0){
  1140.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1141.                 if(reply_format < 1){reply_format = 2;}
  1142.                 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]);
  1143.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1144.             }
  1145.             else
  1146.             if( strcmp(draw_type,"roundrects") == 0){
  1147.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1148.                 if(reply_format < 1){reply_format = 2;}
  1149.                 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]);
  1150.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1151.             }
  1152.             else
  1153.             if( strcmp(draw_type,"rect") == 0){
  1154.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1155.                 if(reply_format < 1){reply_format = 2;}
  1156.                 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]);
  1157.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1158.             }
  1159.             else
  1160.             if( strcmp(draw_type,"roundrect") == 0){
  1161.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1162.                 if(reply_format < 1){reply_format = 2;}
  1163.                 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]);
  1164.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1165.             }
  1166.             else
  1167.             if( strcmp(draw_type,"text") == 0){
  1168.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}      
  1169.                 if(reply_format < 1){reply_format = 17;}
  1170.                 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);
  1171.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1172.             }
  1173.             else
  1174.             {
  1175.                 canvas_error("unknown drawtype or typo? ");
  1176.             }
  1177.             reset();
  1178.         break;
  1179.         case PLOTSTEPS:
  1180.             /*
  1181.              @ plotsteps a_number
  1182.              @ default 150
  1183.              @ use with care !
  1184.             */
  1185.             plot_steps = (int) (get_real(infile,1));
  1186.             break;
  1187.         case FONTSIZE:
  1188.         /*
  1189.          @fontsize font_size
  1190.          @default value 12
  1191.         */
  1192.             font_size = (int) (get_real(infile,1));
  1193.             break;
  1194.         case FONTCOLOR:
  1195.         /*
  1196.          @fontcolor color
  1197.          @color: hexcolor or colorname
  1198.          @default: black
  1199.          @example usage: x/y-axis text
  1200.         */
  1201.             font_color = get_color(infile,1);
  1202.             break;
  1203.         case ANIMATE:
  1204.         /*
  1205.          @animate type
  1206.          @type may be "point" (nothing else , yet...)
  1207.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1208.          @will animate a point on the next plot/curve command
  1209.          @the curve will not be draw
  1210.          @moves repeatedly from xmin to xmax
  1211.         */
  1212.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1213.             break;
  1214.         case LEVELCURVE:
  1215.         /*
  1216.         @levelcurve color,expression in x/y,l1,l2,...
  1217.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1218.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1219.         @every individual level curve may be set 'onclick / drag xy' <br />e.g. every single level curve (l1,l2,l3...l_n) has a unique identifier
  1220.         @note : the arrays for holding the javascript data are limited in size
  1221.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1222.         */
  1223.             fill_color = get_color(infile,0);
  1224.             char *fun1 = get_string_argument(infile,0);
  1225.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1226.             i = 0;
  1227.             done = FALSE;
  1228.             while( !done ){
  1229.              double_data[i] = get_real(infile,1);
  1230.              i++;
  1231.             }
  1232.             for(c = 0 ; c < i; c++){
  1233.              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);
  1234.              click_cnt++;
  1235.             }
  1236.             reset();
  1237.             break;
  1238.         case TRACE_JSCURVE:
  1239.         /*
  1240.          @trace_jscurve some_math_function
  1241.          @will use a crosshair to trace the jsmath curve
  1242.          @two inputfields will display the current x/y-values (numerical evaluation by javascript)
  1243.          @default labels 'x' and 'y'<br />the commands 'xlabel some_x_axis_name' and 'ylabel some_y_axis_name' will set the label for the input fields  
  1244.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1245.          @the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x in stead of 2x etc etc<br />no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  1246.         */
  1247.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1248.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1249.             if( use_js_math == FALSE){
  1250.                 add_to_js_math(js_include_file);
  1251.                 use_js_math = TRUE;
  1252.             }
  1253.             add_trace_js_mouse(js_include_file,TRACE_CANVAS,canvas_root_id,stroke_color,get_string(infile,1),font_size,stroke_opacity,line_width,crosshair_size);
  1254.             break;
  1255.         case JSMATH:
  1256.         /*
  1257.             @jsmath some_math_function
  1258.             @will calculate an y-value from a userinput x-value and draws a crosshair on these coordinates.
  1259.             @default labels 'x' and 'y'<br />the commands 'xlabel some_x_axis_name' and 'ylabel some_y_axis_name' will set the label for the input fields  
  1260.             @example: jsmath sin(x^2)
  1261.             @the client browser will convert your math function to javascript math.<br />use parenthesis and rawmath : use 2*x in stead of 2x etc etc<br />no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  1262.         */
  1263.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1264.             if( use_js_math == FALSE){
  1265.                 add_to_js_math(js_include_file);
  1266.                 use_js_math = TRUE;
  1267.             }
  1268.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1269.             break;
  1270.         case JSCURVE:
  1271.         /*
  1272.          @jscurve color,formula(x)
  1273.          @your function will be plotted by the javascript engine of the client browser.
  1274.          @use parenthesis and rawmath : use 2*x in stead of 2x ; use 2^(sin(x))...etc etc<br />use error console to debug any errors...
  1275.          @no validity check is done by wims.
  1276.          @zooming & panning are implemented :<br />use command 'zoom color' for mouse driven zooming<br />or use keyword 'setlimits' for inputfields setting xmin/xmax, ymin/ymax
  1277.          @use command 'trace_jscurve formula(x)` for tracing
  1278.          @use commmand 'jsmath  formula(x)` for calculating and displaying indiviual points on the curve
  1279.          @can not be set draggable / onclick (yet)
  1280.          @commands plotjump / plotstep are not active for 'jscurve'
  1281.         */
  1282.             stroke_color = get_color(infile,0);
  1283.             if( use_js_math == FALSE){/* add this stuff only once...*/
  1284.                 add_to_js_math(js_include_file);
  1285.                 use_js_math = TRUE;
  1286.             }
  1287.             if( use_js_plot == FALSE){
  1288.                 use_js_plot = TRUE;
  1289.                 add_jsplot(js_include_file,canvas_root_id); /* this plots the function on JSPLOT_CANVAS */
  1290.             }
  1291.             temp = get_string_argument(infile,1);
  1292.             string_length = snprintf(NULL,0,  "jsplot(%d,\"%s\",%d,\"%s\",%.2f,%d,%d,%d); ",JSPLOT_CANVAS+use_js_plot,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1293.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1294.             snprintf(tmp_buffer,string_length,"jsplot(%d,\"%s\",%d,\"%s\",%.2f,%d,%d,%d); ",JSPLOT_CANVAS+use_js_plot,temp,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1295.             add_to_buffer(tmp_buffer);
  1296.             use_js_plot++; /* we need to create multiple canvasses, so we may zoom and pan ?? */
  1297.  
  1298.         break;
  1299.         case CURVE:
  1300.         /*
  1301.          @curve color,formula(x)
  1302.          @plot color,formula(x)
  1303.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1304.          @use command "precision" to increase the number of digits of the plotted points
  1305.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1306.          @may be set draggable / onclick
  1307.         */
  1308.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1309.                 use_parametric = FALSE;
  1310.                 stroke_color = get_color(infile,0);
  1311.                 char *fun1 = get_string_argument(infile,0);
  1312.                 char *fun2 = get_string_argument(infile,1);
  1313.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1314.                 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);
  1315.                 click_cnt++;
  1316.             }
  1317.             else
  1318.             {
  1319.                 stroke_color = get_color(infile,0);
  1320.                 char *fun1 = get_string_argument(infile,1);
  1321.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");} 
  1322.                 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);
  1323.                 click_cnt++;
  1324.             }
  1325.             animation_type = 9;/* reset to curve plotting without animation */
  1326.             reset();
  1327.             break;
  1328.         case FLY_TEXT:
  1329.         /*
  1330.         @ text fontcolor,x,y,font,text_string
  1331.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1332.         @ use command 'fontsize' to increase base fontsize for the keywords
  1333.         @ may be set "onclick" or "drag xy"
  1334.         @ backwards compatible with flydraw
  1335.         @ unicode supported: text red,0,0,huge,\\u2232
  1336.         @ use command 'string' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1337.         @ 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.
  1338.         */
  1339.             for(i = 0; i < 5 ;i++){
  1340.                 switch(i){
  1341.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1342.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1343.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1344.                     case 3: fly_font = get_string_argument(infile,0);
  1345.                             if(strcmp(fly_font,"giant") == 0){
  1346.                                 font_size = (int)(font_size + 24);
  1347.                             }
  1348.                             else
  1349.                             {
  1350.                                 if(strcmp(fly_font,"huge") == 0){
  1351.                                     font_size = (int)(font_size + 14);
  1352.                                 }
  1353.                                 else
  1354.                                 {
  1355.                                     if(strcmp(fly_font,"large") == 0){
  1356.                                         font_size = (int)(font_size + 6);
  1357.                                         }
  1358.                                         else
  1359.                                         {
  1360.                                             if(strcmp(fly_font,"small") == 0){
  1361.                                                 font_size = (int)(font_size - 4);
  1362.                                                 if(font_size<0){font_size = 8;}
  1363.                                         }
  1364.                                     }
  1365.                                 }
  1366.                             }
  1367.                             break; /* font_size ! */
  1368.                     case 4:
  1369.                         temp = get_string_argument(infile,1);
  1370.                         decimals = find_number_of_digits(precision);
  1371.                         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);
  1372.                         click_cnt++;reset();break;
  1373.                     default:break;
  1374.                 }
  1375.             }
  1376.             break;
  1377.         case FLY_TEXTUP:
  1378.         /*
  1379.          @ textup fontcolor,x,y,font,text_string
  1380.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1381.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1382.          @ use command 'fontsize' to increase base fontsize for the keywords
  1383.          @ backwards compatible with flydraw
  1384.          @ unicode supported: textup red,0,0,huge,\\u2232
  1385.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1386.          @ 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.
  1387.         */
  1388.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}  
  1389.             for(i = 0; i<5 ;i++){
  1390.                 switch(i){
  1391.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1392.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1393.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1394.                     case 3: fly_font = get_string_argument(infile,0);
  1395.                             if(strcmp(fly_font,"giant") == 0){
  1396.                                 font_size = (int)(font_size + 24);
  1397.                             }
  1398.                             else
  1399.                             {
  1400.                                 if(strcmp(fly_font,"huge") == 0){
  1401.                                     font_size = (int)(font_size + 14);
  1402.                                 }
  1403.                                 else
  1404.                                 {
  1405.                                     if(strcmp(fly_font,"large") == 0){
  1406.                                         font_size = (int)(font_size + 6);
  1407.                                         }
  1408.                                         else
  1409.                                         {
  1410.                                             if(strcmp(fly_font,"small") == 0){
  1411.                                                 font_size = (int)(font_size - 4);
  1412.                                                 if(font_size<0){font_size = 8;}
  1413.                                         }
  1414.                                     }
  1415.                                 }
  1416.                             }
  1417.                             break; /* font_size ! */
  1418.                     case 4:
  1419.                     decimals = find_number_of_digits(precision);
  1420.                     temp = get_string_argument(infile,1);
  1421.                     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);
  1422.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1423.                     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);
  1424.                     add_to_buffer(tmp_buffer);
  1425.                     break;
  1426.                     default:break;
  1427.                 }
  1428.             }
  1429.             reset();
  1430.             break;
  1431.         case FONTFAMILY:
  1432.         /*
  1433.          @ fontfamily font_description
  1434.          @ set the font family; for browsers that support it
  1435.          @ font_description: Ariel ,Courier, Helvetica etc
  1436.          @ 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
  1437.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1438.         */
  1439.             font_family = get_string(infile,1);
  1440.             break;
  1441.         case STRINGUP:
  1442.         /*
  1443.          @ stringup color,x,y,rotation_degrees,the text string
  1444.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1445.          @ unicode supported: stringup red,0,0,45,\\u2232
  1446.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1447.  
  1448.         */
  1449.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1450.             for(i=0;i<6;i++){
  1451.                 switch(i){
  1452.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1453.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1454.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1455.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1456.                     case 4: decimals = find_number_of_digits(precision);
  1457.                             temp = get_string_argument(infile,1);
  1458.                             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);
  1459.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1460.                             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);
  1461.                             add_to_buffer(tmp_buffer);
  1462.                             break;
  1463.                     default:break;
  1464.                 }
  1465.             }
  1466.             reset();
  1467.             break;
  1468.         case STRING:
  1469.         /*
  1470.          @ string color,x,y,the text string
  1471.          @ may be set "onclick" or "drag xy"
  1472.          @ unicode supported: string red,0,0,\\u2232
  1473.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1474.         */
  1475.             for(i=0;i<5;i++){
  1476.                 switch(i){
  1477.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1478.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1479.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1480.                     case 3: decimals = find_number_of_digits(precision);
  1481.                         temp = get_string_argument(infile,1);
  1482.                         decimals = find_number_of_digits(precision);
  1483.                         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);
  1484.                         click_cnt++;reset();break;
  1485.                             break;
  1486.                     default:break;
  1487.                 }
  1488.             }
  1489.             break;
  1490.         case MATHML:
  1491.         /*
  1492.         @ mathml x1,y1,x2,y2,mathml_string
  1493.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1494.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1495.         @ 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();"
  1496.         @ 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....
  1497.        
  1498.         */
  1499.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1500.             for(i=0;i<5;i++){
  1501.                 switch(i){
  1502.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1503.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1504.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1505.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1506.                     case 4: decimals = find_number_of_digits(precision);
  1507.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1508.                             temp = get_string(infile,1);
  1509.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1510.                             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);
  1511.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1512.                             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);
  1513.                             add_to_buffer(tmp_buffer);
  1514.                             /*
  1515.                              in case inputs are present , trigger adding the read_mathml()
  1516.                              if no other reply_format is defined
  1517.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1518.                              */
  1519.                             if(strstr(temp,"mathml0") != NULL){
  1520.                              if(reply_format < 1 ){reply_format = 16;} /* no other reply type is defined */
  1521.                             }
  1522.                             break;
  1523.                     default:break;
  1524.                 }
  1525.             }
  1526.             reset();
  1527.             break;
  1528.         case HTTP:
  1529.         /*
  1530.          @http x1,y1,x2,y2,http://some_adress.com
  1531.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1532.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1533.          @can not be 'set onclick' or 'drag xy'
  1534.         */
  1535.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}    
  1536.             for(i=0;i<5;i++){
  1537.                 switch(i){
  1538.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1539.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1540.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1541.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1542.                     case 4: decimals = find_number_of_digits(precision);
  1543.                             temp = get_string(infile,1);
  1544.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1545.                             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);
  1546.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1547.                             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);
  1548.                             add_to_buffer(tmp_buffer);
  1549.                     break;
  1550.                 }
  1551.             }
  1552.             reset();
  1553.             break;
  1554.         case HTML:
  1555.         /*
  1556.          @ html x1,y1,x2,y2,html_string
  1557.          @ all tags are allowed
  1558.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1559.          @ 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.
  1560.          
  1561.          note: uses the same code as 'mathml'
  1562.         */
  1563.             break;
  1564.         case X_AXIS_STRINGS:
  1565.         /*
  1566.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1567.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1568.          @ use these x-axis values in stead of default xmin...xmax
  1569.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1570.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1571.          @ 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
  1572.          @ 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
  1573.         */
  1574.             temp = get_string(infile,1);
  1575.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1576.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1577.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1578.             use_axis_numbering = 1;
  1579.             break;
  1580.         case Y_AXIS_STRINGS:
  1581.         /*
  1582.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1583.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1584.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1585.          @ use these y-axis values in stead of default ymin...ymax
  1586.          @ 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
  1587.         */
  1588.             temp = get_string(infile,1);
  1589.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1590.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1591.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1592.             use_axis_numbering = 1;
  1593.             break;
  1594.          
  1595.         case AXIS_NUMBERING:
  1596.         /*
  1597.             @ axisnumbering
  1598.             @ keyword, no aguments required
  1599.         */
  1600.             use_axis_numbering = 1;
  1601.             break;
  1602.         case AXIS:
  1603.         /*
  1604.             @ axis
  1605.             @ keyword, no aguments required
  1606.  
  1607.         */
  1608.             use_axis = TRUE;
  1609.             break;
  1610.         case SGRAPH:
  1611.         /*
  1612.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  1613.          @ primitive implementation of a 'broken scale' graph...
  1614.          @ not very versatile.
  1615.          @ 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
  1616.         */
  1617.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  1618.             for(i = 0 ; i < 8 ;i++){
  1619.                 switch(i){
  1620.                     case 0:double_data[0] = get_real(infile,0);break;
  1621.                     case 1:double_data[1] = get_real(infile,0);break;
  1622.                     case 2:double_data[2] = get_real(infile,0);break;
  1623.                     case 3:double_data[3] = get_real(infile,0);break;
  1624.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  1625.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  1626.                     case 6:stroke_color = get_color(infile,0);break;
  1627.                     case 7:font_color = get_color(infile,1);
  1628.                     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);
  1629.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1630.                     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);
  1631.                     add_to_buffer(tmp_buffer);
  1632.                     break;
  1633.                     default:break;
  1634.                 }
  1635.             }
  1636.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  1637.             break;
  1638.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  1639.         /*
  1640.          @ grid step_x,step_y,gridcolor
  1641.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1642.          @ 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
  1643.          @ 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)
  1644.          @ can not be set "onclick" or "drag xy"
  1645.          @ 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')
  1646.          @ 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')
  1647.          @ 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')
  1648.         */
  1649.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  1650.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  1651.             for(i=0;i<4;i++){
  1652.                 switch(i){
  1653.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  1654.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  1655.                     case 2:
  1656.                     if( use_axis == TRUE ){
  1657.                         stroke_color = get_color(infile,0);
  1658.                         done = FALSE;
  1659.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  1660.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  1661.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  1662.                         fill_color = get_color(infile,1); /* used as axis_color*/
  1663.                     }
  1664.                     else
  1665.                     {
  1666.                         int_data[0] = 1;
  1667.                         int_data[1] = 1;
  1668.                         stroke_color = get_color(infile,1);
  1669.                         fill_color = stroke_color;
  1670.                     }
  1671.                     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 !");}
  1672.                     /* set snap_x snap_y values in pixels */
  1673.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f\n;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  1674. /* 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){ */
  1675.  
  1676.                     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);
  1677.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1678.                     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);
  1679.                     add_to_buffer(tmp_buffer);
  1680.                     break;
  1681.                 }
  1682.             }
  1683.             reset();
  1684.             break;
  1685.         case OPACITY:
  1686.         /*
  1687.         @ opacity 0-255,0-255
  1688.         @
  1689.         */
  1690.             for(i = 0 ; i<2;i++){
  1691.                 switch(i){
  1692.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  1693.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  1694.                     default: break;
  1695.                 }
  1696.             }
  1697.             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 ? */
  1698.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  1699.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  1700.             break;
  1701.         case ROTATE:
  1702.         /*
  1703.          @rotate rotation_angle
  1704.          @
  1705.         */
  1706.             use_rotate = TRUE;
  1707.             use_translate = TRUE;
  1708.             translate_x = x2px(0);
  1709.             translate_y = y2px(0);
  1710.             angle = get_real(infile,1);
  1711.             break;
  1712.         case KILLAFFINE:
  1713.         /*
  1714.         @ killaffine
  1715.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  1716.         */
  1717.             use_affine = FALSE;
  1718.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");    
  1719.             break;
  1720.         case AFFINE:
  1721.         /*
  1722.          @affine a,b,c,d,tx,ty
  1723.          @ defines a transformation matrix for subsequent objects
  1724.          @ use keyword 'killaffine' to end the transformation
  1725.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  1726.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  1727.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  1728.          @ a : Scales the drawings horizontally
  1729.          @ b : Skews the drawings horizontally
  1730.          @ c : Skews the drawings vertically
  1731.          @ d : Scales the drawings vertically
  1732.          @ tx: Moves the drawings horizontally in pixels !
  1733.          @ ty: Moves the drawings vertically in pixels !
  1734.         */
  1735.             for(i = 0 ; i<6;i++){
  1736.                 switch(i){
  1737.                     case 0: double_data[0] = get_real(infile,0);break;
  1738.                     case 1: double_data[1] = get_real(infile,0);break;
  1739.                     case 2: double_data[2] = get_real(infile,0);break;
  1740.                     case 3: double_data[3] = get_real(infile,0);break;
  1741.                     case 4: int_data[0] = (int)(get_real(infile,0));break;
  1742.                     case 5: int_data[1] = (int)(get_real(infile,1));
  1743.                         use_affine = TRUE;
  1744.                         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]);
  1745.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  1746.                         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]);    
  1747.                     break;
  1748.                     default: break;
  1749.                 }
  1750.             }
  1751.         break;
  1752.         case KILLTRANSLATION:
  1753.         /*
  1754.          killtranslation
  1755.         */
  1756.             break;
  1757.         case TRANSLATION:
  1758.         /*
  1759.          @translation tx,ty
  1760.          @
  1761.         */
  1762.             use_translate = TRUE;
  1763.             translate_x = get_real(infile,0);
  1764.             translate_y = get_real(infile,1);
  1765.             break;
  1766.         case DASHED:
  1767.         /*
  1768.         @ keyword "dashed"
  1769.         @ next object will be drawn with a dashed line
  1770.         @ change dashing scheme by using command "dashtype int,int)
  1771.         */
  1772.             use_dashed = TRUE;
  1773.             break;
  1774.         case FILLED:
  1775.         /*
  1776.         @ keyword "filled"
  1777.         @ the next 'fillable' object (only) will be filled
  1778.         @ use command "fillcolor color" to set fillcolor
  1779.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  1780.         @ 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 !
  1781.         */
  1782.             use_filled = TRUE;
  1783.             break;
  1784.         case STYLE:
  1785.         /*
  1786.          @highlight color,opacity,linewidth
  1787.          @ NOT IMPLEMENTED
  1788.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  1789.         */
  1790.             break;
  1791.         case FILLCOLOR:
  1792.         /*
  1793.         @ fillcolor colorname or #hex
  1794.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  1795.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  1796.         */
  1797.             fill_color = get_color(infile,1);
  1798.             break;
  1799.         case STROKECOLOR:
  1800.         /*
  1801.         @ strokecolor colorname or #hex
  1802.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  1803.         */
  1804.             stroke_color = get_color(infile,1);
  1805.             break;
  1806.         case BGIMAGE:
  1807.         /*
  1808.          @bgimage image_location
  1809.          @use an image as background .<br />(we use the background of 'canvas_div' )
  1810.          @the background image will be resized to match "width = xsize" and "height = ysize"
  1811.         */
  1812.         URL = get_string(infile,1);
  1813.         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);
  1814.             break;
  1815.         case BGCOLOR:
  1816.         /*
  1817.          @bgcolor colorname or #hex
  1818.          @use this color as background of the "div" containing the canvas(es)
  1819.         */
  1820.         /* [255,255,255]*/
  1821.             bgcolor = get_string(infile,1);
  1822.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  1823.                 int found = 0;
  1824.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  1825.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  1826.                         bgcolor = colors[i].hex;
  1827.                         found = 1;
  1828.                         break;
  1829.                     }
  1830.                 }
  1831.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  1832.             }
  1833.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  1834.             break;
  1835.         case COPY:
  1836.         /*
  1837.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  1838.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  1839.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  1840.         @ [filename] is the URL of the image   
  1841.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  1842.         @ 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
  1843.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  1844.  
  1845.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  1846.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  1847.         */
  1848.             for(i = 0 ; i<7;i++){
  1849.                 switch(i){
  1850.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  1851.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  1852.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  1853.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  1854.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  1855.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  1856.                     case 6: URL = get_string(infile,1);
  1857.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  1858.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  1859.                             if( drag_type > -1 ){
  1860.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  1861.                                 if(reply_format < 1 ){reply_format = 20;}
  1862.                                 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);
  1863.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1864.                                 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);                       
  1865.                                 drag_type = -1;
  1866.                                 ext_img_cnt++;
  1867.                             }
  1868.                             else
  1869.                             {
  1870.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  1871.                                 /*
  1872.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  1873.                                 */
  1874.                                 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]);
  1875.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1876.                                 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]);
  1877.                             }
  1878.                             add_to_buffer(tmp_buffer);
  1879.                             break;
  1880.                     default: break;
  1881.                 }
  1882.             }
  1883.             reset();
  1884.             break;
  1885. /*
  1886. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  1887. img     Specifies the image, canvas, or video element to use
  1888. sx      The x coordinate where to start clipping : x1 = int_data[0]
  1889. sy      The y coordinate where to start clipping : x2 = int_data[1]
  1890. swidth  The width of the clipped image : int_data[2] - int_data[0]
  1891. sheight The height of the clipped image : int_data[3] - int_data[1]
  1892. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  1893. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  1894. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  1895. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  1896. */
  1897.         case COPYRESIZED:
  1898.         /*
  1899.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  1900.         @ 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
  1901.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  1902.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  1903.         @ 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
  1904.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  1905.         */
  1906.             for(i = 0 ; i<9;i++){
  1907.                 switch(i){
  1908.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  1909.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  1910.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  1911.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  1912.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  1913.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  1914.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  1915.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  1916.                     case 8: URL = get_string(infile,1);
  1917.                             if( drag_type > -1 ){
  1918.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  1919.                                 if(reply_format < 1 ){reply_format = 20;}
  1920.                                 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);
  1921.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1922.                                 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);
  1923.                                 drag_type = -1;
  1924.                                 ext_img_cnt++;
  1925.                             }
  1926.                             else
  1927.                             {
  1928.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  1929.                                 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]);
  1930.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1931.                                 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]);
  1932.                             }
  1933.                             add_to_buffer(tmp_buffer);
  1934.                     default: break;
  1935.                 }
  1936.             }
  1937.             reset();
  1938.             break;
  1939.         case BUTTON:
  1940.         /*
  1941.          button x,y,value
  1942.         */
  1943.         break;
  1944.         case INPUTSTYLE:
  1945.         /*
  1946.         @ inputstyle style_description
  1947.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  1948.         */
  1949.             input_style = get_string(infile,1);
  1950.             break;
  1951.         case INPUT:
  1952.         /*
  1953.          @ input x,y,size,editable,value
  1954.          @ to set inputfield "readonly", use editable = 0
  1955.          @ only active inputfields (editable = 1) will be read with read_canvas();
  1956.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  1957.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  1958.         */
  1959.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}    
  1960.             for(i = 0 ; i<5;i++){
  1961.                 switch(i){
  1962.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  1963.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  1964.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  1965.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  1966.                     case 4:
  1967.                             temp = get_string_argument(infile,1);
  1968.                             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);
  1969.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1970.                             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);
  1971.                             add_to_buffer(tmp_buffer);
  1972.                             input_cnt++;break;
  1973.                     default: break;
  1974.                 }
  1975.             }
  1976.             if(reply_format < 1 ){reply_format = 15;}
  1977.             reset();
  1978.             break;
  1979.         case TEXTAREA:
  1980.         /*
  1981.          @ textarea x,y,cols,rows,readonly,value
  1982.          @ may be further controlled by "inputstyle"
  1983.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  1984.         */
  1985.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}  
  1986.             for(i = 0 ; i<6;i++){
  1987.                 switch(i){
  1988.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  1989.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  1990.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  1991.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  1992.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  1993.                     case 5: temp = get_string_argument(infile,1);
  1994.                             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);
  1995.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1996.                             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);
  1997.                             add_to_buffer(tmp_buffer);
  1998.                             input_cnt++;break;
  1999.                     default: break;
  2000.                 }
  2001.             }
  2002.             if(reply_format < 1 ){reply_format = 15;}
  2003.             reset();
  2004.             break;
  2005.         case MOUSE_PRECISION:
  2006.         /*
  2007.             @ precision int
  2008.             @ 10 = 1 decimal ; 100 = 2 decimals etc
  2009.             @ may be used / changed before every object
  2010.         */
  2011.             precision = (int) (get_real(infile,1));
  2012.             break;
  2013.         case SETLIMITS:
  2014.         /*
  2015.             @setlimits
  2016.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  2017.             @may be used for inputfield based zooming / panning
  2018.             @use command xlabel / ylabel to change text from xmin to 'xlabel'min etc
  2019.             @note:the input value will not be checked on validity
  2020.         */
  2021.             add_setlimits(js_include_file,canvas_root_id);
  2022.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  2023.             use_pan_and_zoom = TRUE;
  2024.             done = TRUE;
  2025.             break;
  2026.         case ZOOM:
  2027.         /*
  2028.          @ zoom button_color
  2029.          @ introduce a controlpanel at the lower right corner
  2030.          @ 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
  2031.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  2032.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  2033.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  2034.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2035.          @ 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 !!
  2036.         */
  2037.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2038.             use_pan_and_zoom = TRUE;
  2039.             if( js_function[DRAW_ZOOM_BUTTONS] != 1 ){ js_function[DRAW_ZOOM_BUTTONS] = 1;}
  2040.             /* we use BG_CANVAS (0) */
  2041.             stroke_color = get_color(infile,1);
  2042.             string_length = snprintf(NULL,0," draw_zoom_buttons(%d,\"%s\",%f);",BG_CANVAS,stroke_color,stroke_opacity);
  2043.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2044.             snprintf(tmp_buffer,MAX_BUFFER-1,"draw_zoom_buttons(%d,\"%s\",%f);",BG_CANVAS,stroke_color,stroke_opacity);
  2045.             add_to_buffer(tmp_buffer);
  2046.             done = TRUE;
  2047.             break;
  2048.         case ONCLICK:
  2049.         /*
  2050.          @ onclick
  2051.          @ keyword, no arguments
  2052.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2053.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2054.          @ NOTE: not all objects  may be set clickable
  2055.         */
  2056.            
  2057.             onclick = 1;
  2058.             break;
  2059.         case DRAG:
  2060.         /*
  2061.          @ drag [x][y][xy]
  2062.          @ the next object will be draggable in x / y / xy direction
  2063.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2064.          @ 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.
  2065.          @ 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 !!
  2066.         */
  2067.             temp = get_string(infile,1);
  2068.             if(strstr(temp,"xy") != NULL ){
  2069.                 drag_type = 0;
  2070.             }
  2071.             else
  2072.             {
  2073.                 if(strstr(temp,"x") != NULL ){
  2074.                     drag_type = 1;
  2075.                 }
  2076.                 else
  2077.                 {
  2078.                     drag_type = 2;
  2079.                 }
  2080.             }
  2081.             onclick = 2;
  2082.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2083.             break;
  2084.         case BLINK:
  2085.         /*
  2086.          @ blink time(seconds)
  2087.          @ NOT IMPLEMETED -YET
  2088.         */
  2089.             break;
  2090.         case MOUSE:
  2091.         /*
  2092.          @ mouse color,fontsize
  2093.          @ will display the cursor coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2094.         */
  2095.             stroke_color = get_color(infile,0);
  2096.             font_size = (int) (get_real(infile,1));
  2097.             tmp_buffer = my_newmem(26);
  2098.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2099.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity);
  2100.             break;
  2101.         case INTOOLTIP:
  2102.             /*
  2103.             @ intooltip link_text
  2104.             @ link_text is a single line (span-element)
  2105.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2106.             @ link_text may contain HTML markup
  2107.             @ the canvas will be displayed in a tooltip on 'link_text'
  2108.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2109.             */
  2110.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2111.             use_tooltip = TRUE;
  2112.             tooltip_text = get_string(infile,1);
  2113.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2114.             break;
  2115.         case AUDIO:
  2116.         /*
  2117.         @ audio x,y,w,h,loop,visible,audiofile location
  2118.         @ x,y : left top corner of audio element (in xrange / yrange)
  2119.         @ w,y : width and height in pixels
  2120.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2121.         @ visible : 0 or 1 (1 = show controls)
  2122.         @ audio format may be in *.mp3 or *.ogg
  2123.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2124.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2125.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2126.         @ 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 />
  2127.         */
  2128.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2129.             for(i=0;i<7;i++){
  2130.                 switch(i){
  2131.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2132.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2133.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2134.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2135.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2136.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2137.                     case 6:
  2138.                     temp = get_string(infile,1);
  2139.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2140.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2141.                     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);
  2142.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2143.                     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);
  2144.                     add_to_buffer(tmp_buffer);
  2145.                     break;
  2146.                     default:break;
  2147.                 }
  2148.             }
  2149.             reset();
  2150.             break;
  2151.         case VIDEO:
  2152.         /*
  2153.         @ video x,y,w,h,videofile location
  2154.         @ x,y : left top corner of audio element (in xrange / yrange)
  2155.         @ w,y : width and height in pixels
  2156.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2157.         @ video format may be in *.mp4 (todo:other formats)
  2158.         */
  2159.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2160.             for(i=0;i<5;i++){
  2161.                 switch(i){
  2162.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2163.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2164.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2165.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2166.                     case 4: temp = get_string(infile,1);
  2167.                             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);
  2168.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2169.                             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);
  2170.                             add_to_buffer(tmp_buffer);
  2171.                             break;
  2172.                     default:break;
  2173.                 }
  2174.             }
  2175.             reset();
  2176.             break;
  2177.         case HATCHFILL:
  2178.         /*
  2179.         @ hatchfill x0,y0,dx,dy,color
  2180.         @ x0,y0 in xrange / yrange
  2181.         @ distances dx,dy in pixels
  2182.         */
  2183.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2184.             for(i=0;i<5;i++){
  2185.                 switch(i){
  2186.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2187.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2188.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2189.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2190.                     case 4: stroke_color = get_color(infile,1);
  2191.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2192.                     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);
  2193.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2194.                     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);
  2195.                     add_to_buffer(tmp_buffer);
  2196.                     break;
  2197.                     default:break;
  2198.                 }
  2199.             }
  2200.             reset();
  2201.         break;
  2202.         case DIAMONDFILL:
  2203.         /*
  2204.         @ diamondfill x0,y0,dx,dy,color
  2205.         @ x0,y0 in xrange / yrange
  2206.         @ distances dx,dy in pixels
  2207.         */
  2208.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2209.             for(i=0;i<5;i++){
  2210.                 switch(i){
  2211.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2212.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2213.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2214.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2215.                     case 4: stroke_color = get_color(infile,1);
  2216.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2217.                     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);
  2218.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2219.                     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);
  2220.                     add_to_buffer(tmp_buffer);
  2221.                     break;
  2222.                     default:break;
  2223.                 }
  2224.             }
  2225.             reset();
  2226.         break;
  2227.         case GRIDFILL:
  2228.         /*
  2229.         @ gridfill x0,y0,dx,dy,color
  2230.         @ x0,y0 in xrange / yrange
  2231.         @ distances dx,dy in pixels
  2232.         */
  2233.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2234.             for(i=0;i<5;i++){
  2235.                 switch(i){
  2236.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2237.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2238.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2239.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2240.                     case 4: stroke_color = get_color(infile,1);
  2241.                     /* draw_gridfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2242.                     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);
  2243.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2244.                     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);
  2245.                     add_to_buffer(tmp_buffer);
  2246.                     break;
  2247.                     default:break;
  2248.                 }
  2249.             }
  2250.             reset();
  2251.         break;
  2252.         case DOTFILL:
  2253.         /*
  2254.         @ dotfill x0,y0,dx,dy,color
  2255.         @ x0,y0 in xrange / yrange
  2256.         @ distances dx,dy in pixels
  2257.         @ radius of dots is linewidth
  2258.         */
  2259.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2260.             for(i=0;i<5;i++){
  2261.                 switch(i){
  2262.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2263.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2264.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2265.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2266.                     case 4: stroke_color = get_color(infile,1);
  2267.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2268.                     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);
  2269.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2270.                     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);
  2271.                     add_to_buffer(tmp_buffer);
  2272.                     break;
  2273.                     default:break;
  2274.                 }
  2275.             }
  2276.             reset();
  2277.         break;
  2278.         case IMAGEFILL:
  2279.         /*
  2280.         @ imagefill dx,dy,image_url
  2281.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2282.         @ After pattern filling ,the fill-color should be reset !
  2283.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2284.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2285.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2286.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2287.         */
  2288.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2289.             for(i=0 ;i < 3 ; i++){
  2290.                 switch(i){
  2291.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2292.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2293.                     case 2: URL = get_string_argument(infile,1);
  2294.                             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);
  2295.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2296.                             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);
  2297.                             add_to_buffer(tmp_buffer);
  2298.                     break;
  2299.                 }
  2300.             }
  2301.         break;
  2302.         case FILLTOBORDER:
  2303.         /*
  2304.         @ filltoborder x,y,bordercolor,color
  2305.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2306.         @ any other color will not act as border to the bucket fill
  2307.         @ use this command  after all boundary objects are declared.
  2308.         @ 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..
  2309.         */
  2310.             for(i=0 ;i < 4 ; i++){
  2311.                 switch(i){
  2312.                     case 0:double_data[0] = get_real(infile,0);break;
  2313.                     case 1:double_data[1] = get_real(infile,0);break;
  2314.                     case 2:bgcolor = get_color(infile,0);break;
  2315.                     case 3:fill_color = get_color(infile,1);
  2316.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2317.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2318.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2319.                            }
  2320.                            decimals = find_number_of_digits(precision);
  2321.                            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));
  2322.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2323.                            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));
  2324.                            add_to_buffer(tmp_buffer);
  2325.                            break;
  2326.                     default:break;
  2327.                     }
  2328.                 }
  2329.         break;
  2330.         case FLOODFILL:
  2331.         /*
  2332.         @ floodfill x,y,color
  2333.         @ alternative syntax: fill x,y,color
  2334.         @ fill the region of point (x:y) with color 'color'
  2335.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2336.         @ use this command  after all boundary objects are declared.
  2337.         @ Use command 'clickfill,color' for user click driven flood fill.
  2338.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2339.         @ 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..
  2340.         */
  2341.             for(i=0 ;i < 4 ; i++){
  2342.                 switch(i){
  2343.                     case 0:double_data[0] = get_real(infile,0);break;
  2344.                     case 1:double_data[1] = get_real(infile,0);break;
  2345.                     case 2:fill_color = get_color(infile,1);
  2346.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2347.                                 js_function[DRAW_FLOODFILL] = 1;
  2348.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2349.                            }
  2350.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2351.                            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));
  2352.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2353.                            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));
  2354.                            add_to_buffer(tmp_buffer);
  2355.                            break;
  2356.                     default:break;
  2357.                     }
  2358.                 }
  2359.         break;
  2360.         case CLICKFILLMARGE:
  2361.             clickfillmarge = (int) (get_real(infile,1));
  2362.             break;
  2363.         /*
  2364.         @ clickfillmarge int
  2365.         @ default 20 (pixels)
  2366.         @ 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[])
  2367.         */
  2368.         case CLICKFILL:
  2369.         /*
  2370.         @ clickfill fillcolor
  2371.         @ user left mouse click will floodfill the area with fillcolor
  2372.         @ multiple areas may be coloured
  2373.         @ 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)
  2374.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2375.         @ background color of main div may be set by using command "bgcolor color"
  2376.         @ may not be combined with command "userdraw"
  2377.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2378.         */
  2379.          fill_color = get_color(infile,1);
  2380.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2381.             js_function[DRAW_FLOODFILL] = 1;
  2382.             add_js_floodfill(js_include_file,canvas_root_id);
  2383.          }
  2384.          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));
  2385.          add_read_canvas(1);
  2386.         break;
  2387.         case SETPIXEL:
  2388.         /*
  2389.         @ setpixel x,y,color
  2390.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  2391.         @ pixels can not be dragged or clicked
  2392.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2393.         */
  2394.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2395.             for(i=0;i<3;i++){
  2396.                 switch(i){
  2397.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  2398.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  2399.                     case 2: stroke_color = get_color(infile,1);
  2400.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2401.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2402.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2403.                            add_to_buffer(tmp_buffer);
  2404.                            break;
  2405.                     default:break;
  2406.                 }
  2407.             }
  2408.             reset();
  2409.         break;
  2410.         case PIXELSIZE:
  2411.         /*
  2412.         @ pixelsize int
  2413.         @ in case you want to deviate from default pixelsize = 1...
  2414.         */
  2415.             pixelsize = (int) get_real(infile,1);
  2416.         break;
  2417.         case PIXELS:
  2418.         /*
  2419.         @ pixels color,x1,y1,x2,y2,x3,y3...
  2420.         @ Draw  "points" with diameter 1 pixel
  2421.         @ pixels can not be dragged or clicked
  2422.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2423.         */
  2424.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2425.             stroke_color=get_color(infile,0);
  2426.             i=0;
  2427.             c=0;
  2428.             while( ! done ){     /* get next item until EOL*/
  2429.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  2430.                 for( c = 0 ; c < 2; c++){
  2431.                     if(c == 0 ){
  2432.                         double_data[i] = get_real(infile,0);
  2433.                         i++;
  2434.                     }
  2435.                     else
  2436.                     {
  2437.                         double_data[i] = get_real(infile,1);
  2438.                         i++;
  2439.                     }
  2440.                 }
  2441.             }
  2442.             decimals = find_number_of_digits(precision);
  2443.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  2444.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2445.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2446.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2447.             add_to_buffer(tmp_buffer);
  2448.             break;
  2449.         case REPLYFORMAT:
  2450.         /*
  2451.         @ replyformat number
  2452.         @ default values should be fine !
  2453.         @ 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>
  2454.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  2455.         */
  2456.          reply_format = (int) get_real(infile,1);
  2457.         break;
  2458.         case LEGENDCOLORS:
  2459.         /*
  2460.         @ legendcolors color1:color2:color3:...:color_n
  2461.         @ will be used to colour a legend
  2462.         @ make sure the number of colours match the number of legend items
  2463.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  2464.         */
  2465.             temp = get_string(infile,1);
  2466.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2467.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",canvas_root_id,temp);
  2468.             break;
  2469.         case LEGEND:
  2470.         /*
  2471.         @ legend string1:string2:string3....string_n
  2472.         @ will be used to create a legend for a graph
  2473.         @ also see command 'piechart'  
  2474.         */
  2475.             temp = get_string(infile,1);
  2476.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2477.             fprintf(js_include_file,"var legend%d = [\"%s\"];",canvas_root_id,temp);
  2478.             break;
  2479.         case XLABEL:
  2480.         /*
  2481.         @ xlabel some_string
  2482.         @ will be used to create a label for the x-axis (label is in quadrant I)
  2483.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2484.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2485.         */
  2486.             temp = get_string(infile,1);
  2487.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  2488.             break;
  2489.         case YLABEL:
  2490.         /*
  2491.         @ ylabel some_string
  2492.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  2493.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2494.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2495.         */
  2496.             temp = get_string(infile,1);
  2497.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  2498.             break;
  2499.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  2500.         /*
  2501.         @ linegraph x1:y1;x2:y2...x_n:y;2
  2502.         @ will plot your data in a graph
  2503.         @ may only to be used together with command 'grid'
  2504.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2505.         @ use command 'legend' to provide an optional legend in right-top-corner
  2506.         @ also see command 'piechart'
  2507.         @ multiple linegraphs may be used in a single plot
  2508.         @ <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>
  2509.         */    
  2510.             temp = get_string(infile,1);
  2511.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2512.             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);
  2513.             linegraph_cnt++;
  2514.             reset();
  2515.             break;
  2516.         case CLOCK:
  2517.         /*
  2518.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  2519.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  2520.         @ 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
  2521.         @ if you don't want a seconds hand (or minutes...), just make it invisible by using the background color of the hourglass...
  2522.         @ 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>
  2523.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  2524.         @ no combinations with other reply_types allowed, for now
  2525.         @ 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
  2526.         */
  2527.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  2528.  
  2529.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  2530.             for(i=0;i<9;i++){
  2531.              switch(i){
  2532.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  2533.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  2534.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  2535.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  2536.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  2537.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  2538.               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 */
  2539.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  2540.                 switch(int_data[7]){
  2541.                     case 0:break;
  2542.                     case 1:if(clock_cnt == 0){
  2543.                                 if( reply_format == 0 ){
  2544.                                      reply_format = 18; /* user sets clock */
  2545.                                     /* 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");
  2546.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2547.                                      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");
  2548.                                      add_to_buffer(tmp_buffer);
  2549.                                     */
  2550.                                      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");
  2551.                                 }
  2552.                                 else
  2553.                                 {
  2554.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  2555.                                 }
  2556.                                 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);
  2557.                              }
  2558.                     break;
  2559.                     case 2:if( reply_format == 0 ){
  2560.                                 reply_format = 19; /* "onclick */
  2561.                                 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 ");
  2562.                             }
  2563.                             else
  2564.                             {
  2565.                                 if( reply_format != 19){
  2566.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  2567.                                  }
  2568.                             }
  2569.                      break;
  2570.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  2571.                 }
  2572.                 break;
  2573.                 case 8:
  2574.                         temp = get_string(infile,1);
  2575.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  2576.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  2577.                         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);
  2578.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2579.                         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);
  2580.                         add_to_buffer(tmp_buffer);
  2581.                         clock_cnt++;
  2582.                         break;
  2583.                 default:break;
  2584.              }
  2585.             }
  2586.             break;
  2587.         case BARCHART:
  2588.         /*
  2589.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  2590.         @ will be used to create a legend for bar graph
  2591.         @ may only to be used together with command 'grid'
  2592.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2593.         @ use command 'legend' to provide an optional legend in right-top-corner
  2594.         @ also see command 'piechart'  
  2595.         */
  2596.             temp = get_string(infile,1);
  2597.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  2598.             fprintf(js_include_file,"var barchart%d = [\"%s\"];",canvas_root_id,temp);
  2599.             reset();
  2600.             break;
  2601.         case PIECHART:
  2602.         /*
  2603.         @ piechart xc,yc,radius,'data+colorlist'
  2604.         @ (xc : yc) center of circle diagram in xrange/yrange
  2605.         @ radius in pixels
  2606.         @ 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
  2607.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  2608.         @ the number of colors must match the number of data.
  2609.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  2610.         @ 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...
  2611.         */
  2612.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}    
  2613.             for(i=0;i<5;i++){
  2614.                 switch(i){
  2615.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2616.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2617.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  2618.                     case 3: temp = get_string(infile,1);
  2619.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  2620.                             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);
  2621.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2622.                             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);
  2623.                             add_to_buffer(tmp_buffer);
  2624.                            break;
  2625.                     default:break;
  2626.                 }
  2627.             }
  2628.             reset();
  2629.         break;
  2630.         case STATUS:
  2631.             fprintf(js_include_file,"\nstatus=\"waiting\";\n");
  2632.             break;
  2633.         case XLOGBASE:
  2634.         /*
  2635.         @ xlogbase number
  2636.         @ sets the logbase number for the x-axis
  2637.         @ default value 10
  2638.         @ use together with commands xlogscale / xylogscale
  2639.         */
  2640.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  2641.             break;
  2642.         case YLOGBASE:
  2643.         /*
  2644.         @ ylogbase number
  2645.         @ sets the logbase number for the y-axis
  2646.         @ default value 10
  2647.         @ use together with commands ylogscale / xylogscale
  2648.         */
  2649.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  2650.             break;
  2651.         case XLOGSCALE:
  2652.         /*
  2653.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  2654.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2655.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  2656.          @ the linewidth is set using command 'linewidth int'
  2657.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2658.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  2659.          @ 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>
  2660.          @ note: the complete canvas will be used for the 'log paper'
  2661.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2662.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2663.          @ 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')  
  2664.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2665.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2666.         */
  2667.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2668.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  2669.             for(i=0;i<4;i++){
  2670.                 switch(i){
  2671.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  2672.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  2673.                     case 2: stroke_color = get_color(infile,0); break;
  2674.                     case 3: fill_color = get_color(infile,1);
  2675.                         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);
  2676.                         tmp_buffer = my_newmem(string_length+1);
  2677.                         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);
  2678.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  2679.                         add_to_buffer(tmp_buffer);
  2680.                         break;
  2681.                     default:break;
  2682.                 }
  2683.             }
  2684.             break;
  2685.         case YLOGSCALE:
  2686.         /*
  2687.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  2688.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2689.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  2690.          @ the linewidth is set using command 'linewidth int'
  2691.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2692.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  2693.          @ 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>
  2694.          @ note: the complete canvas will be used for the 'log paper'
  2695.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2696.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2697.          @ 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')  
  2698.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2699.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2700.         */
  2701.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2702.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  2703.             for(i=0;i<4;i++){
  2704.                 switch(i){
  2705.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  2706.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  2707.                     case 2: stroke_color = get_color(infile,0); break;
  2708.                     case 3: fill_color = get_color(infile,1);
  2709.                         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);
  2710.                         tmp_buffer = my_newmem(string_length+1);
  2711.                         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);
  2712.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  2713.                         add_to_buffer(tmp_buffer);
  2714.                         break;
  2715.                     default:break;
  2716.                 }
  2717.             }
  2718.             break;
  2719.         case XYLOGSCALE:
  2720.         /*
  2721.          @ xylogscale majorcolor,minorcolor
  2722.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2723.          @ the linewidth is set using command 'linewidth int'
  2724.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2725.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  2726.          @ 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>
  2727.          @ note: the complete canvas will be used for the 'log paper'
  2728.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2729.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2730.          @ 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')  
  2731.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2732.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2733.         */
  2734.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2735.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  2736.             for(i=0;i<2;i++){
  2737.                 switch(i){
  2738.                     case 0: stroke_color = get_color(infile,0); break;
  2739.                     case 1: fill_color = get_color(infile,1);
  2740.                         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);
  2741.                         tmp_buffer = my_newmem(string_length+1);
  2742.                         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);
  2743.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  2744.                         add_to_buffer(tmp_buffer);
  2745.                         break;
  2746.                     default:break;
  2747.                 }
  2748.             }
  2749.         break;
  2750.         default:sync_input(infile);
  2751.         break;
  2752.     }
  2753.   }
  2754.   /* we are done parsing script file */
  2755.  
  2756.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable shapes / objects  ! */
  2757.   add_javascript_functions(js_function,canvas_root_id);
  2758.    /* add read_canvas() etc functions if needed */
  2759.   if( reply_format > 0 ){ add_read_canvas(reply_format);}
  2760.   if( use_pan_and_zoom == TRUE ){
  2761.   /* in case of zooming ... */
  2762.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  2763.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  2764.  var ymin_start=ymin;var ymax_start=xmax;\
  2765.  var zoom_x_increment=0;var zoom_y_increment=0;\
  2766.  var pan_x_increment=0;var pan_y_increment=0;\
  2767.  if(use_ylogscale == 0 ){\
  2768.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (xmax - xmin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  2769.  }else{\
  2770.   zoom_x_increment = (xmax - xmin)/20;\
  2771.   pan_x_increment = (xmax - xmin)/20;\
  2772.  };\
  2773.  function start_canvas%d(type){\
  2774.   switch(type){\
  2775.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  2776.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  2777.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  2778.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  2779.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  2780.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  2781.    case 6:location.reload();break;\
  2782.    default:break;\
  2783.   };\
  2784.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  2785.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  2786.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  2787.   %s\
  2788.  };\
  2789.  start_canvas%d(333);\
  2790. };\n\
  2791. <!-- end wims_canvas_function -->\n\
  2792. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  2793.   }
  2794.   else
  2795.   {
  2796.   /* no zoom, just add buffer */
  2797.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  2798.  %s\
  2799. };\n\
  2800. <!-- end wims_canvas_function -->\n\
  2801. wims_canvas_function%d();\n",buffer,canvas_root_id);
  2802.   }
  2803. /* done writing the javascript include file */
  2804. fclose(js_include_file);
  2805.  
  2806. }
  2807.  
  2808. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  2809. if(use_tooltip == TRUE){
  2810.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  2811. }
  2812. exit(EXIT_SUCCESS);
  2813. }
  2814. /* end main() */
  2815.  
  2816. /******************************************************************************
  2817. **
  2818. **  sync_input
  2819. **
  2820. **  synchronises input line - reads to end of line, leaving file pointer
  2821. **  at first character of next line.
  2822. **
  2823. **  Used by:
  2824. **  main program - error handling.
  2825. **
  2826. ******************************************************************************/
  2827. void sync_input(FILE *infile)
  2828. {
  2829.         int c = 0;
  2830.  
  2831.         if( c == '\n' || c == ';' ) return;
  2832.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  2833.         if( c == EOF ) finished = 1;
  2834.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  2835.         return;
  2836. }
  2837.  
  2838. /******************************************************************************/
  2839.  
  2840. char *str_replace(const char *str, const char *old, const char *new){
  2841. /* http://creativeandcritical.net/str-replace-c/ */
  2842.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  2843.     char *ret, *r;
  2844.     const char *p, *q;
  2845.     size_t oldlen = strlen(old);
  2846.     size_t count = 0;
  2847.     size_t retlen = 0;
  2848.     size_t newlen = strlen(new);
  2849.     if (oldlen != newlen){
  2850.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  2851.             count++;
  2852.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  2853.         }
  2854.     }
  2855.     else
  2856.     {
  2857.         retlen = strlen(str);
  2858.     }
  2859.    
  2860.     if ((ret = malloc(retlen + 1)) == NULL){
  2861.         ret = NULL;
  2862.         canvas_error("string argument is NULL");
  2863.     }
  2864.     else
  2865.     {
  2866.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  2867.             size_t l = q - p;
  2868.             memcpy(r, p, l);
  2869.             r += l;
  2870.             memcpy(r, new, newlen);
  2871.             r += newlen;
  2872.         }
  2873.         strcpy(r, p);
  2874.     }
  2875.     return ret;
  2876. }
  2877.  
  2878. /******************************************************************************/
  2879.  
  2880. char *get_color(FILE *infile , int last){
  2881.     int c,i = 0,is_hex = 0;
  2882.     char temp[MAX_COLOR_STRING], *string;
  2883.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  2884.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  2885.         if( c == '#' ){
  2886.             is_hex = 1;
  2887.         }
  2888.         if( c != ' '){
  2889.             temp[i]=tolower(c);
  2890.             i++;
  2891.         }
  2892.     }
  2893.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  2894.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  2895.     if( c == EOF ){finished = 1;}
  2896.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  2897.     temp[i]='\0';
  2898.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  2899.     if( is_hex == 1 ){
  2900.         char red[3], green[3], blue[3];
  2901.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  2902.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  2903.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  2904.         int r = (int) strtol(red,   NULL, 16);
  2905.         int g = (int) strtol(green, NULL, 16);
  2906.         int b = (int) strtol(blue,  NULL, 16);
  2907.         string = (char *)my_newmem(12);
  2908.         snprintf(string,11,"%d,%d,%d",r,g,b);
  2909.         return string;
  2910.     }
  2911.     else
  2912.     {
  2913.         string = (char *)my_newmem(sizeof(temp));
  2914.         snprintf(string,sizeof(temp),"%s",temp);
  2915.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  2916.             if( strcmp( colors[i].name , string ) == 0 ){
  2917.                 return colors[i].rgb;
  2918.             }
  2919.         }
  2920.     }
  2921.     /* not found...return error */
  2922.     free(string);string = NULL;
  2923.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  2924.     return NULL;
  2925. }
  2926.  
  2927. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  2928.     int c,i=0;
  2929.     char  temp[MAX_BUFFER], *string;
  2930.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  2931.         temp[i]=c;
  2932.         i++;
  2933.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  2934.     }
  2935.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  2936.     if( c == '\n') { done = TRUE; line_number++; }
  2937.     if( c == EOF ) {
  2938.         finished = 1;
  2939.         if( last != 1 ){ canvas_error("expected more arguments");}
  2940.     }
  2941.     temp[i]='\0';
  2942.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  2943.     string=(char *)my_newmem(strlen(temp));
  2944.     snprintf(string,sizeof(temp),"%s",temp);
  2945.     return string;
  2946. }
  2947.  
  2948. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  2949.     int c,i=0;
  2950.     char temp[MAX_BUFFER], *string;
  2951.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  2952.         temp[i]=c;
  2953.         i++;
  2954.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  2955.     }
  2956.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  2957.     if( c == '\n') { line_number++; }
  2958.     if( c == EOF ) {finished = 1;}
  2959.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  2960.     temp[i]='\0';
  2961.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  2962.     string=(char *)my_newmem(sizeof(temp));
  2963.     snprintf(string,sizeof(temp),"%s",temp);
  2964.     done = TRUE;
  2965.     return string;
  2966. }
  2967.  
  2968. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  2969.     int c,i=0,found_calc = 0;
  2970.     double y;
  2971.     char tmp[MAX_INT];
  2972.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  2973.      if( c != ' ' ){
  2974.      /*
  2975.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  2976.      We will check after assert() if it's a NULL pointer...and exit program via :
  2977.      canvas_error("I'm having trouble parsing your \"expression\" ");
  2978.      */
  2979.       if( i == 0 &&  c == '+' ){
  2980.        continue;
  2981.       }
  2982.       else
  2983.       {
  2984.        if(canvas_iscalculation(c) != 0){
  2985.         found_calc = 1;
  2986.         c = tolower(c);
  2987.        }
  2988.        tmp[i] = c;
  2989.        i++;
  2990.       }
  2991.      }
  2992.      if( i > MAX_INT - 1){canvas_error("number too large");}
  2993.     }
  2994.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  2995.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  2996.     if( c == EOF ){done = TRUE ; finished = 1;}
  2997.     tmp[i]='\0';
  2998.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  2999.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  3000.      void *f = eval_create(tmp);
  3001.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  3002.      y = eval_x(f, 1);
  3003.      /* if function is bogus; y = 1 : so no core dumps */
  3004.      eval_destroy(f);
  3005.     }
  3006.     else
  3007.     {
  3008.      y = atof(tmp);
  3009.     }
  3010.     return y;
  3011. }
  3012. void canvas_error(char *msg){
  3013.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  3014.     finished = 1;
  3015.     exit(EXIT_SUCCESS);
  3016. }
  3017.  
  3018.  
  3019. /* convert x/y coordinates to pixel */
  3020. int x2px(double x){
  3021.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3022. }
  3023.  
  3024. int y2px(double y){
  3025.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3026. }
  3027.  
  3028. double px2x(int x){
  3029.  return (x*(xmax - xmin)/xsize + xmin);
  3030. }
  3031. double px2y(int y){
  3032.  return (y*(ymax - ymin)/ysize + ymin);
  3033. }
  3034.  
  3035. void add_to_buffer(char *tmp){
  3036.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3037.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3038.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3039.  if( space_left > strlen(tmp)){
  3040.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3041.  }
  3042.  else
  3043.  {
  3044.   canvas_error("buffer is too big\n");
  3045.  }
  3046.  tmp = NULL;free(tmp);
  3047.  return;
  3048. }
  3049.  
  3050. void reset(){
  3051.  if(use_filled == TRUE){use_filled = FALSE;}
  3052.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3053.  if(use_translate == TRUE){use_translate = FALSE;}
  3054.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3055.  onclick = 0;
  3056. }
  3057.  
  3058.  
  3059.  
  3060. /* What reply format in read_canvas();
  3061.  
  3062. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3063. 1 = x1,x2,x3,x4....x_n
  3064.     y1,y2,y3,y4....y_n
  3065.  
  3066.     x/y in pixels
  3067.  
  3068. 2 = x1,x2,x3,x4....x_n
  3069.     y1,y2,y3,y4....y_n
  3070.     x/y in  xrange / yrange coordinate system
  3071.  
  3072. 3 = x1,x2,x3,x4....x_n
  3073.     y1,y2,y3,y4....y_n
  3074.     r1,r2,r3,r4....r_n
  3075.  
  3076.     x/y in pixels
  3077.     r in pixels
  3078.  
  3079. 4 = x1,x2,x3,x4....x_n
  3080.     y1,y2,y3,y4....y_n
  3081.     r1,r2,r3,r4....r_n
  3082.  
  3083.     x/y in  xrange / yrange coordinate system
  3084.     r in pixels
  3085.  
  3086. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3087.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3088.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3089.     By1,By2,By3,By4....By_n
  3090.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3091.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3092.     ....
  3093.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3094.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3095.    
  3096.     x/y in pixels
  3097.  
  3098. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3099.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3100.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3101.     By1,By2,By3,By4....By_n
  3102.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3103.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3104.     ....
  3105.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3106.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3107.  
  3108.     x/y in  xrange / yrange coordinate system
  3109.    
  3110. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3111.    
  3112.     x/y in pixels
  3113.  
  3114. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3115.    
  3116.     x/y in  xrange / yrange coordinate system
  3117.  
  3118. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n    
  3119.  
  3120.     x/y in pixels
  3121.  
  3122. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n    
  3123.  
  3124.     x/y in  xrange / yrange coordinate system
  3125.  
  3126. 11 = Ax1,Ay1,Ax2,Ay2
  3127.      Bx1,By1,Bx2,By2
  3128.      Cx1,Cy1,Cx2,Cy2
  3129.      Dx1,Dy1,Dx2,Dy2
  3130.      ......
  3131.      Zx1,Zy1,Zx2,Zy2
  3132.      
  3133.     x/y in  xrange / yrange coordinate system
  3134.  
  3135. 12 = Ax1,Ay1,Ax2,Ay2
  3136.      Bx1,By1,Bx2,By2
  3137.      Cx1,Cy1,Cx2,Cy2
  3138.      Dx1,Dy1,Dx2,Dy2
  3139.      ......
  3140.      Zx1,Zy1,Zx2,Zy2
  3141.      
  3142.     x/y in pixels
  3143.  
  3144. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3145.  
  3146.     x/y in  xrange / yrange coordinate system
  3147. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3148.     x/y in pixels
  3149. 15 = reply from inputfields,textareas
  3150.     reply1,reply2,reply3,...,reply_n
  3151.  
  3152. 16 = read mathml inputfields only
  3153.  
  3154. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3155.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3156.  
  3157. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3158. 19 = return clicked object number (analogue to shape-library onclick)
  3159. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3160. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3161. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3162.     x/y in  xrange / yrange coordinate system
  3163. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3164. */
  3165.  
  3166.  
  3167. void add_read_canvas(int type_reply){
  3168. /* just 1 reply type allowed */
  3169. switch(type_reply){
  3170. /*  TO DO
  3171. !!!!  NEED TO SIMPLIFY !!!!  
  3172. answers may have:
  3173. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3174. */
  3175.     case 1: fprintf(js_include_file,"\
  3176. \n<!-- begin function 1 read_canvas() -->\n\
  3177. function read_canvas(){\
  3178. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3179. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3180.  var p = 0;var input_reply = new Array();\
  3181.  if( document.getElementById(\"canvas_input0\")){\
  3182.   var t = 0;\
  3183.   while(document.getElementById(\"canvas_input\"+t)){\
  3184.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3185.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3186.     p++;\
  3187.    };\
  3188.    t++;\
  3189.   };\
  3190.  };\
  3191.  if( typeof userdraw_text != 'undefined' ){\
  3192.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3193.  }\
  3194.  else\
  3195.  {\
  3196.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3197.  }\
  3198. }\
  3199. else\
  3200. {\
  3201.  if( typeof userdraw_text != 'undefined' ){\
  3202.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3203.  }\
  3204.  else\
  3205.  {\
  3206.   return userdraw_x+\"\\n\"+userdraw_y;\
  3207.  }\
  3208. };\
  3209. };\
  3210. this.read_canvas = read_canvas;\n\
  3211. <!-- end function 1 read_canvas() -->");
  3212.     break;
  3213.     case 2: fprintf(js_include_file,"\
  3214. \n<!-- begin function 2 read_canvas() -->\n\
  3215. function read_canvas(){\
  3216. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3217. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3218. while(userdraw_x[p]){\
  3219.  reply_x[p] = px2x(userdraw_x[p]);\
  3220.  reply_y[p] = px2y(userdraw_y[p]);\
  3221.  p++;\
  3222. };\
  3223. if(p == 0){alert(\"nothing drawn...\");return;};\
  3224. if( document.getElementById(\"canvas_input0\")){\
  3225.  var p = 0;var input_reply = new Array();\
  3226.  if( document.getElementById(\"canvas_input0\")){\
  3227.   var t = 0;\
  3228.   while(document.getElementById(\"canvas_input\"+t)){\
  3229.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3230.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3231.     p++;\
  3232.    };\
  3233.    t++;\
  3234.   };\
  3235.  };\
  3236.  if( typeof userdraw_text != 'undefined' ){\
  3237.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3238.  }\
  3239.  else\
  3240.  {\
  3241.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3242.  }\
  3243. }\
  3244. else\
  3245. {\
  3246.  if( typeof userdraw_text != 'undefined' ){\
  3247.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3248.  }\
  3249.  else\
  3250.  {\
  3251.   return reply_x+\"\\n\"+reply_y;\
  3252.  };\
  3253. };\
  3254. };\
  3255. this.read_canvas = read_canvas;\n\
  3256. <!-- end function 2 read_canvas() -->");
  3257.     break;
  3258.     case 3: fprintf(js_include_file,"\
  3259. \n<!-- begin function 3 read_canvas() -->\n\
  3260. function read_canvas(){\
  3261. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3262. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3263.  var p = 0;var input_reply = new Array();\
  3264.  if( document.getElementById(\"canvas_input0\")){\
  3265.   var t = 0;\
  3266.   while(document.getElementById(\"canvas_input\"+t)){\
  3267.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3268.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3269.     p++;\
  3270.    };\
  3271.    t++;\
  3272.   };\
  3273.  };\
  3274.  if( typeof userdraw_text != 'undefined' ){\
  3275.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3276.  }\
  3277.  else\
  3278.  {\
  3279.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3280.  }\
  3281. }\
  3282. else\
  3283. {\
  3284.  if( typeof userdraw_text != 'undefined' ){\
  3285.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3286.  }\
  3287.  else\
  3288.  {\
  3289.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3290.  }\
  3291. }\
  3292. };\
  3293. this.read_canvas = read_canvas;\n\
  3294. <!-- end function 3 read_canvas() -->");
  3295.     break;
  3296.     case 4: fprintf(js_include_file,"\
  3297. \n<!-- begin function 4 read_canvas() -->\n\
  3298. function read_canvas(){\
  3299. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3300. while(userdraw_x[p]){\
  3301.  reply_x[p] = px2x(userdraw_x[p]);\
  3302.  reply_y[p] = px2y(userdraw_y[p]);\
  3303.  p++;\
  3304. };\
  3305. if(p == 0){alert(\"nothing drawn...\");return;};\
  3306. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3307.  var p = 0;var input_reply = new Array();\
  3308.  if( document.getElementById(\"canvas_input0\")){\
  3309.   var t = 0;\
  3310.   while(document.getElementById(\"canvas_input\"+t)){\
  3311.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3312.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3313.     p++;\
  3314.    };\
  3315.    t++;\
  3316.   };\
  3317.  };\
  3318.  if( typeof userdraw_text != 'undefined' ){\
  3319.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3320.  }\
  3321.  else\
  3322.  {\
  3323.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3324.  }\
  3325. }\
  3326. else\
  3327. {\
  3328.  if( typeof userdraw_text != 'undefined' ){\
  3329.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3330.  }\
  3331.  else\
  3332.  {\
  3333.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  3334.  }\
  3335. };\
  3336. };\
  3337. this.read_canvas = read_canvas;\n\
  3338. <!-- end function 4 read_canvas() -->");
  3339.     break;
  3340.     /*
  3341.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3342.         used for userdraw multiple paths
  3343.     */
  3344.     case 5: fprintf(js_include_file,"\
  3345. \n<!-- begin function 5 read_canvas() -->\n\
  3346. function read_canvas(){\
  3347. var p = 0;\
  3348. var reply = \"\";\
  3349. for(p = 0; p < userdraw_x.length;p++){\
  3350.  if(userdraw_x[p] != null ){\
  3351.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  3352.  };\
  3353. };\
  3354. if(p == 0){alert(\"nothing drawn...\");return;};\
  3355. userdraw_x = [];userdraw_y = [];\
  3356. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3357.  var p = 0;var input_reply = new Array();\
  3358.  if( document.getElementById(\"canvas_input0\")){\
  3359.   var t = 0;\
  3360.   while(document.getElementById(\"canvas_input\"+t)){\
  3361.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3362.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3363.     p++;\
  3364.    };\
  3365.    t++;\
  3366.   };\
  3367.  };\
  3368.  if( typeof userdraw_text != 'undefined' ){\
  3369.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3370.  }\
  3371.  else\
  3372.  {\
  3373.   return reply +\"\\n\"+input_reply;\
  3374.  }\
  3375. }\
  3376. else\
  3377. {\
  3378.  if( typeof userdraw_text != 'undefined' ){\
  3379.   return reply+\"\\n\"+userdraw_text;\
  3380.  }\
  3381.  else\
  3382.  {\
  3383.   return reply;\
  3384.  }\
  3385. };\
  3386. };\
  3387. this.read_canvas = rdad_canvas;\n\
  3388. <!-- end function 5 read_canvas() -->");
  3389.     break;
  3390.     /*
  3391.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3392.         used for userdraw multiple paths
  3393.     */
  3394.     case 6: fprintf(js_include_file,"\
  3395. \n<!-- begin function 6 read_canvas() -->\n\
  3396. function read_canvas(){\
  3397. var p = 0;\
  3398. var reply = \"\";\
  3399. var tmp_x = new Array();\
  3400. var tmp_y = new Array();\
  3401. for(p = 0 ; p < userdraw_x.length; p++){\
  3402.  tmp_x = userdraw_x[p];\
  3403.  tmp_y = userdraw_y[p];\
  3404.  if(tmp_x != null){\
  3405.   for(var i = 0 ; i < tmp_x.length ; i++){\
  3406.    tmp_x[i] = px2x(tmp_x[i]);\
  3407.    tmp_y[i] = px2y(tmp_y[i]);\
  3408.   };\
  3409.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  3410.  };\
  3411. };\
  3412. if(p == 0){alert(\"nothing drawn...\");return;};\
  3413. userdraw_x = [];userdraw_y = [];\
  3414. if( document.getElementById(\"canvas_input0\") ){\
  3415.  var p = 0;var input_reply = new Array();\
  3416.  if( document.getElementById(\"canvas_input0\")){\
  3417.   var t = 0;\
  3418.   while(document.getElementById(\"canvas_input\"+t)){\
  3419.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3420.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3421.     p++;\
  3422.    };\
  3423.    t++;\
  3424.   };\
  3425.  };\
  3426.  if( typeof userdraw_text != 'undefined' ){\
  3427.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3428.  }\
  3429.  else\
  3430.  {\
  3431.   return reply +\"\\n\"+input_reply;\
  3432.  }\
  3433. }\
  3434. else\
  3435. {\
  3436.  if( typeof userdraw_text != 'undefined' ){\
  3437.   return reply +\"\\n\"+userdraw_text;\
  3438.  }\
  3439.  else\
  3440.  {\
  3441.   return reply;\
  3442.  }\
  3443. };\
  3444. };\
  3445. this.read_canvas = read_canvas;\n\
  3446. <!-- end function 6 read_canvas() -->");
  3447.     break;
  3448.     case 7: fprintf(js_include_file,"\
  3449. \n<!-- begin function 7 read_canvas() -->\n\
  3450. function read_canvas(){\
  3451. var reply = new Array();\
  3452. var p = 0;\
  3453. while(userdraw_x[p]){\
  3454.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  3455.  p++;\
  3456. };\
  3457. if(p == 0){alert(\"nothing drawn...\");return;};\
  3458. if( document.getElementById(\"canvas_input0\") ){\
  3459.  var p = 0;var input_reply = new Array();\
  3460.  if( document.getElementById(\"canvas_input0\")){\
  3461.   var t = 0;\
  3462.   while(document.getElementById(\"canvas_input\"+t)){\
  3463.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3464.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3465.     p++;\
  3466.    };\
  3467.    t++;\
  3468.   };\
  3469.  };\
  3470.  if( typeof userdraw_text != 'undefined' ){\
  3471.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3472.  }\
  3473.  else\
  3474.  {\
  3475.   return reply+\"\\n\"+input_reply;\
  3476.  }\
  3477. }\
  3478. else\
  3479. {\
  3480.  if( typeof userdraw_text != 'undefined' ){\
  3481.   return reply+\"\\n\"+userdraw_text;\
  3482.  }\
  3483.  else\
  3484.  {\
  3485.   return reply;\
  3486.  }\
  3487. };\
  3488. };\
  3489. this.read_canvas = read_canvas;\n\
  3490. <!-- end function 7 read_canvas() -->");
  3491.     break;
  3492.     case 8: fprintf(js_include_file,"\
  3493. \n<!-- begin function 8 read_canvas() -->\n\
  3494. function read_canvas(){\
  3495. var reply = new Array();\
  3496. var p = 0;\
  3497. while(userdraw_x[p]){\
  3498.  reply[p] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]);\
  3499.  p++;\
  3500. };\
  3501. if(p == 0){alert(\"nothing drawn...\");return;};\
  3502. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3503.  var p = 0;var input_reply = new Array();\
  3504.  if( document.getElementById(\"canvas_input0\")){\
  3505.   var t = 0;\
  3506.   while(document.getElementById(\"canvas_input\"+t)){\
  3507.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3508.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3509.     p++;\
  3510.    };\
  3511.    t++;\
  3512.   };\
  3513.  };\
  3514.  if( typeof userdraw_text != 'undefined' ){\
  3515.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3516.  }\
  3517.  else\
  3518.  {\
  3519.   return reply +\"\\n\"+input_reply;\
  3520.  }\
  3521. }\
  3522. else\
  3523. {\
  3524.  if( typeof userdraw_text != 'undefined' ){\
  3525.   return reply +\"\\n\"+userdraw_text;\
  3526.  }\
  3527.  else\
  3528.  {\
  3529.   return reply;\
  3530.  }\
  3531. };\
  3532. };\
  3533. this.read_canvas = read_canvas;\n\
  3534. <!-- end function 8 read_canvas() -->");
  3535.     break;
  3536.     case 9: fprintf(js_include_file,"\
  3537. \n<!-- begin function 9 read_canvas() -->\n\
  3538. function read_canvas(){\
  3539. var reply = new Array();\
  3540. var p = 0;\
  3541. while(userdraw_x[p]){\
  3542.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  3543.  p++;\
  3544. };\
  3545. if(p == 0){alert(\"nothing drawn...\");return;};\
  3546. if( document.getElementById(\"canvas_input0\") ){\
  3547.  var p = 0;var input_reply = new Array();\
  3548.  if( document.getElementById(\"canvas_input0\")){\
  3549.   var t = 0;\
  3550.   while(document.getElementById(\"canvas_input\"+t)){\
  3551.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3552.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3553.     p++;\
  3554.    };\
  3555.    t++;\
  3556.   };\
  3557.  };\
  3558.  if( typeof userdraw_text != 'undefined' ){\
  3559.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3560.  }\
  3561.  else\
  3562.  {\
  3563.   return reply +\"\\n\"+input_reply;\
  3564.  }\
  3565. }\
  3566. else\
  3567. {\
  3568.  if( typeof userdraw_text != 'undefined' ){\
  3569.   return reply +\"\\n\"+userdraw_text;\
  3570.  }\
  3571.  else\
  3572.  {\
  3573.   return reply;\
  3574.  }\
  3575. };\
  3576. };\
  3577. this.read_canvas = read_canvas;\n\
  3578. <!-- end function 9 read_canvas() -->");
  3579.     break;
  3580.     case 10: fprintf(js_include_file,"\
  3581. \n<!-- begin function 10 read_canvas() -->\n\
  3582. function read_canvas(){\
  3583. var reply = new Array();\
  3584. var p = 0;\
  3585. while(userdraw_x[p]){\
  3586.  reply[p] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]) +\":\" + userdraw_radius[p];\
  3587.  p++;\
  3588. };\
  3589. if(p == 0){alert(\"nothing drawn...\");return;};\
  3590. if( document.getElementById(\"canvas_input0\") ){\
  3591.  var p = 0;var input_reply = new Array();\
  3592.  if( document.getElementById(\"canvas_input0\")){\
  3593.   var t = 0;\
  3594.   while(document.getElementById(\"canvas_input\"+t)){\
  3595.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3596.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3597.     p++;\
  3598.    };\
  3599.    t++;\
  3600.   };\
  3601.  };\
  3602.  if( typeof userdraw_text != 'undefined' ){\
  3603.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3604.  }\
  3605.  else\
  3606.  {\
  3607.   return reply +\"\\n\"+input_reply;\
  3608.  }\
  3609. }\
  3610. else\
  3611. {\
  3612.  if( typeof userdraw_text != 'undefined' ){\
  3613.   return reply +\"\\n\"+userdraw_text;\
  3614.  }\
  3615.  else\
  3616.  {\
  3617.   return reply;\
  3618.  }\
  3619. };\
  3620. };\
  3621. this.read_canvas = read_canvas;\n\
  3622. <!-- end function 10 read_canvas() -->");
  3623.     break;
  3624.     case 11: fprintf(js_include_file,"\
  3625. \n<!-- begin function 11 read_canvas() -->\n\
  3626. function read_canvas(){\
  3627. var reply = \"\";\
  3628. var p = 0;\
  3629. while(userdraw_x[p]){\
  3630.  reply = reply + px2x(userdraw_x[p]) +\",\" + px2y(userdraw_y[p]) +\",\" + px2x(userdraw_x[p+1]) +\",\" + px2y(userdraw_y[p+1]) +\"\\n\" ;\
  3631.  p = p+2;\
  3632. };\
  3633. if(p == 0){alert(\"nothing drawn...\");return;};\
  3634. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3635.  var p = 0;var input_reply = new Array();\
  3636.  if( document.getElementById(\"canvas_input0\")){\
  3637.   var t = 0;\
  3638.   while(document.getElementById(\"canvas_input\"+t)){\
  3639.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3640.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3641.     p++;\
  3642.    };\
  3643.    t++;\
  3644.   };\
  3645.  };\
  3646.  if( typeof userdraw_text != 'undefined' ){\
  3647.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3648.  }\
  3649.  else\
  3650.  {\
  3651.   return reply +\"\\n\"+input_reply;\
  3652.  }\
  3653. }\
  3654. else\
  3655. {\
  3656.  if( typeof userdraw_text != 'undefined' ){\
  3657.   return reply +\"\\n\"+userdraw_text;\
  3658.  }\
  3659.  else\
  3660.  {\
  3661.   return reply;\
  3662.  }\
  3663. };\
  3664. };\
  3665. this.read_canvas = read_canvas;\n\
  3666. <!-- end function 11 read_canvas() -->");
  3667.     break;
  3668.     case 12: fprintf(js_include_file,"\
  3669. \n<!-- begin function 12 read_canvas() -->\n\
  3670. function read_canvas(){\
  3671. var reply = \"\";\
  3672. var p = 0;\
  3673. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  3674.  if(userdraw_x[p] != null){\
  3675.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  3676.  };\
  3677. };\
  3678. if(p == 0){alert(\"nothing drawn...\");return;};\
  3679. if( document.getElementById(\"canvas_input0\") ){\
  3680.  var p = 0;var input_reply = new Array();\
  3681.  if( document.getElementById(\"canvas_input0\")){\
  3682.   var t = 0;\
  3683.   while(document.getElementById(\"canvas_input\"+t)){\
  3684.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3685.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3686.     p++;\
  3687.    };\
  3688.    t++;\
  3689.   };\
  3690.  };\
  3691.  if( typeof userdraw_text != 'undefined' ){\
  3692.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3693.  }\
  3694.  else\
  3695.  {\
  3696.   return reply +\"\\n\"+input_reply;\
  3697.  }\
  3698. }\
  3699. else\
  3700. {\
  3701.  if( typeof userdraw_text != 'undefined' ){\
  3702.   return reply +\"\\n\"+userdraw_text\
  3703.  }\
  3704.  else\
  3705.  {\
  3706.   return reply;\
  3707.  }\
  3708. };\
  3709. };\
  3710. this.read_canvas = read_canvas;\n\
  3711. <!-- end function 12 read_canvas() -->");
  3712.     break;
  3713.     case 13: fprintf(js_include_file,"\
  3714. \n<!-- begin function 13 read_canvas() -->\n\
  3715. function read_canvas(){\
  3716. var reply = new Array();\
  3717. var p = 0;var i = 0;\
  3718. while(userdraw_x[p]){\
  3719.  reply[i] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]) +\":\" + px2x(userdraw_x[p+1]) +\":\" + px2y(userdraw_y[p+1]);\
  3720.  p = p+2;i++;\
  3721. };\
  3722. if(p == 0){alert(\"nothing drawn...\");return;};\
  3723. if( document.getElementById(\"canvas_input0\") ){\
  3724.  var p = 0;var input_reply = new Array();\
  3725.  if( document.getElementById(\"canvas_input0\")){\
  3726.   var t = 0;\
  3727.   while(document.getElementById(\"canvas_input\"+t)){\
  3728.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3729.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3730.     p++;\
  3731.    };\
  3732.    t++;\
  3733.   };\
  3734.  };\
  3735.  if( typeof userdraw_text != 'undefined' ){\
  3736.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3737.  }\
  3738.  else\
  3739.  {\
  3740.   return reply +\"\\n\"+input_reply;\
  3741.  }\
  3742. }\
  3743. else\
  3744. {\
  3745.  if( typeof userdraw_text != 'undefined' ){\
  3746.   return reply +\"\\n\"+userdraw_text\
  3747.  }\
  3748.  else\
  3749.  {\
  3750.   return reply;\
  3751.  }\
  3752. };\
  3753. };\
  3754. this.read_canvas = read_canvas;\n\
  3755. <!-- end function 13 read_canvas() -->");
  3756.     break;
  3757.     case 14: fprintf(js_include_file,"\
  3758. \n<!-- begin function 14 read_canvas() -->\n\
  3759. function read_canvas(){\
  3760. var reply = new Array();\
  3761. var p = 0;var i = 0;\
  3762. while(userdraw_x[p]){\
  3763.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  3764.  p = p+2;i++;\
  3765. };\
  3766. if(p == 0){alert(\"nothing drawn...\");return;};\
  3767. if( document.getElementById(\"canvas_input0\") ){\
  3768.  var p = 0;var input_reply = new Array();\
  3769.  if( document.getElementById(\"canvas_input0\")){\
  3770.   var t = 0;\
  3771.   while(document.getElementById(\"canvas_input\"+t)){\
  3772.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3773.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3774.     p++;\
  3775.    };\
  3776.    t++;\
  3777.   };\
  3778.  };\
  3779.  if( typeof userdraw_text != 'undefined' ){\
  3780.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3781.  }\
  3782.  else\
  3783.  {\
  3784.   return reply +\"\\n\"+input_reply;\
  3785.  }\
  3786. }\
  3787. else\
  3788. {\
  3789.  if( typeof userdraw_text != 'undefined' ){\
  3790.   return reply +\"\\n\"+userdraw_text;\
  3791.  }\
  3792.  else\
  3793.  {\
  3794.   return reply;\
  3795.  }\
  3796. };\
  3797. };\
  3798. this.read_canvas = read_canvas;\n\
  3799. <!-- end function 14 read_canvas() -->");
  3800.     break;
  3801.     case 15: fprintf(js_include_file,"\
  3802. \n<!-- begin function 15  read_canvas() -->\n\
  3803. function read_canvas(){\
  3804. var input_reply = new Array();\
  3805. var p = 0;\
  3806. if( document.getElementById(\"canvas_input0\")){\
  3807.  var t = 0;\
  3808.  while(document.getElementById(\"canvas_input\"+t)){\
  3809.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3810.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3811.    p++;\
  3812.   };\
  3813.   t++;\
  3814.  };\
  3815. };\
  3816. if( typeof userdraw_text != 'undefined' ){\
  3817.   return input_reply +\"\\n\"+userdraw_text;\
  3818. }\
  3819. else\
  3820. {\
  3821.  return input_reply;\
  3822. };\
  3823. };\
  3824. this.read_canvas = read_canvas;\n\
  3825. <!-- end function 15 read_canvas() -->");
  3826.     break;
  3827.     case 16: fprintf(js_include_file,"\
  3828. \n<!-- begin function 16 read_mathml() -->\n\
  3829. function read_mathml(){\
  3830. var reply = new Array();\
  3831. var p = 0;\
  3832. if( document.getElementById(\"mathml0\")){\
  3833.  while(document.getElementById(\"mathml\"+p)){\
  3834.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  3835.   p++;\
  3836.  };\
  3837. };\
  3838. return reply;\
  3839. };\
  3840. this.read_mathml = read_mathml;\n\
  3841. <!-- end function 16 read_mathml() -->");
  3842.     break;
  3843.     case 17:  fprintf(js_include_file,"\
  3844. \n<!-- begin function 17 read_canvas() -->\n\
  3845. function read_canvas(){\
  3846. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  3847. return userdraw_text;\
  3848. };\
  3849. this.read_canvas = read_canvas;\n\
  3850. <!-- end function 17 read_canvas() -->");
  3851.     break;
  3852.     case 18: fprintf(js_include_file,"\
  3853. \n<!-- begin function 18 read_canvas() -->\n\
  3854. function read_canvas(){\
  3855. var p = 0;\
  3856. var reply = new Array();\
  3857. var name;\
  3858. var t = true;\
  3859. while(t){\
  3860.  try{ name = eval('clocks'+p);\
  3861.  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;};\
  3862. };\
  3863. if( p == 0){alert(\"clock(s) not modified...\");return;}\
  3864. return reply;\
  3865. };\
  3866. this.read_canvas = read_canvas;\n\
  3867. <!-- end function 18 read_canvas() -->");
  3868.     break;
  3869.     case 19: fprintf(js_include_file,"\
  3870. \n<!-- begin function 19 read_canvas() -->\n\
  3871. function read_canvas(){\
  3872. return reply[0];\
  3873. };\
  3874. this.read_canvas = read_canvas;\n\
  3875. <!-- end function 19 read_canvas() -->");
  3876.     case 20: fprintf(js_include_file,"\
  3877. \n<!-- begin function 20 read_canvas() -->\n\
  3878. function read_canvas(){\
  3879. var len  = ext_drag_images.length;\
  3880. var reply = new Array(len);\
  3881. for(var p = 0 ; p < len ; p++){\
  3882.    var img = ext_drag_images[p];\
  3883.    reply[p] = px2x(img[6])+\":\"+px2y(img[7]);\
  3884. };\
  3885. return reply;\
  3886. };\
  3887. this.read_canvas = read_canvas;\n\
  3888. <!-- end function 20 read_canvas() -->");
  3889.     break;
  3890.     case 21: fprintf(js_include_file,"\
  3891. \n<!-- begin function 21 read_canvas() -->\n\
  3892. function read_canvas(){\
  3893. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3894. var reply_coord = new Array();var p = 0;\
  3895. while(userdraw_x[p]){\
  3896.  reply_coord[p] = \"(\"+px2x(userdraw_x[p])+\":\"+px2y(userdraw_y[p])+\")\";\
  3897.  p++;\
  3898. };\
  3899. if(p == 0){alert(\"nothing drawn...\");return;};\
  3900. if( document.getElementById(\"canvas_input0\") ){\
  3901.  var p = 0;var input_reply = new Array();\
  3902.  if( document.getElementById(\"canvas_input0\")){\
  3903.   var t = 0;\
  3904.   while(document.getElementById(\"canvas_input\"+t)){\
  3905.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3906.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3907.     p++;\
  3908.    };\
  3909.    t++;\
  3910.   };\
  3911.  };\
  3912.  if( typeof userdraw_text != 'undefined' ){\
  3913.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3914.  }\
  3915.  else\
  3916.  {\
  3917.   return reply_coord+\"\\n\"+input_reply;\
  3918.  }\
  3919. }\
  3920. else\
  3921. {\
  3922.  if( typeof userdraw_text != 'undefined' ){\
  3923.   return reply_coord+\"\\n\"+userdraw_text;\
  3924.  }\
  3925.  else\
  3926.  {\
  3927.   return reply_coord;\
  3928.  };\
  3929. };\
  3930. };\
  3931. this.read_canvas = read_canvas;\n\
  3932. <!-- end function 21 read_canvas() -->");
  3933.     break;
  3934.     case 22: fprintf(js_include_file,"\
  3935. \n<!-- begin function 22 read_canvas() -->\n\
  3936. function read_canvas(){\
  3937. var reply = new Array();\
  3938. var p = 0;\
  3939. var idx = 0;\
  3940. while(userdraw_x[p]){\
  3941.  reply[idx] = px2x(userdraw_x[p]);\
  3942.  idx++;\
  3943.  reply[idx] = px2y(userdraw_y[p]);\
  3944.  idx++;p++;\
  3945. };\
  3946. if(p == 0){alert(\"nothing drawn...\");return;};\
  3947. if( document.getElementById(\"canvas_input0\") ){\
  3948.  var p = 0;var input_reply = new Array();\
  3949.  if( document.getElementById(\"canvas_input0\")){\
  3950.   var t = 0;\
  3951.   while(document.getElementById(\"canvas_input\"+t)){\
  3952.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3953.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3954.     p++;\
  3955.    };\
  3956.    t++;\
  3957.   };\
  3958.  };\
  3959.  if( typeof userdraw_text != 'undefined' ){\
  3960.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3961.  }\
  3962.  else\
  3963.  {\
  3964.   return reply +\"\\n\"+input_reply;\
  3965.  }\
  3966. }\
  3967. else\
  3968. {\
  3969.  if( typeof userdraw_text != 'undefined' ){\
  3970.   return reply +\"\\n\"+userdraw_text;\
  3971.  }\
  3972.  else\
  3973.  {\
  3974.   return reply;\
  3975.  }\
  3976. };\
  3977. };\
  3978. this.read_canvas = read_canvas;\n\
  3979. <!-- end function 22 read_canvas() -->");
  3980.     break;
  3981.     case 23: fprintf(js_include_file,"\
  3982. \n<!-- begin function 23 read_canvas() default 5 px marge -->\n\
  3983. function read_canvas(){\
  3984. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  3985. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3986. var lu = userdraw_x.length;\
  3987. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  3988. var marge = 5;\
  3989. reply_x[p] = px2x(userdraw_x[0]);reply_y[p] = px2y(userdraw_y[0]);p++;\
  3990. for(var i = 0; i < lu - 1 ; i++ ){\
  3991.  if( (userdraw_x[i] < (userdraw_x[i+1] + marge)) && (userdraw_x[i] > (userdraw_x[i+1] - marge)) ){\
  3992.   if( (userdraw_y[i] < (userdraw_y[i+1] + marge)) && (userdraw_y[i] > (userdraw_y[i+1] - marge)) ){\
  3993.    reply_x[p] = px2x(userdraw_x[i]);reply_y[p] = px2y(userdraw_y[i]);\
  3994.    if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  3995.    p++;\
  3996.   };\
  3997.  };\
  3998. };\
  3999. if( document.getElementById(\"canvas_input0\")){\
  4000.  var p = 0;var input_reply = new Array();\
  4001.  if( document.getElementById(\"canvas_input0\")){\
  4002.   var t = 0;\
  4003.   while(document.getElementById(\"canvas_input\"+t)){\
  4004.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  4005.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  4006.     p++;\
  4007.    };\
  4008.    t++;\
  4009.   };\
  4010.  };\
  4011.  if( typeof userdraw_text != 'undefined' ){\
  4012.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  4013.  }\
  4014.  else\
  4015.  {\
  4016.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4017.  }\
  4018. }\
  4019. else\
  4020. {\
  4021.  if( typeof userdraw_text != 'undefined' ){\
  4022.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4023.  }\
  4024.  else\
  4025.  {\
  4026.   return reply_x+\"\\n\"+reply_y;\
  4027.  };\
  4028. };\
  4029. };\
  4030. this.read_canvas = read_canvas;\n\
  4031. <!-- end function 23 read_canvas() -->");
  4032.     break;
  4033.  
  4034.     default: canvas_error("hmmm unknown replyformat...");break;
  4035. }
  4036.  return;
  4037. }
  4038.  
  4039.  
  4040. /*
  4041.  add drawfunction :
  4042.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4043.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4044.  - grid / mathml
  4045.  - will not scale or zoom in
  4046.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4047.  - is printed directly into 'js_include_file'
  4048. */
  4049.  
  4050. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4051. int i;
  4052. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4053.  if( js_functions[i] == 1){
  4054.     switch(i){
  4055.     case DRAG_EXTERNAL_IMAGE:
  4056. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4057. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4058. var external_ctx = external_canvas.getContext(\"2d\");\
  4059. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4060. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4061. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4062. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4063. var selected_image = null;\
  4064. var ext_image_cnt = 0;\
  4065. var ext_drag_images = new Array();\
  4066. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4067. ext_image_cnt = idx;\
  4068. var image = new Image();\
  4069. image.src = URL;\
  4070. image.onload = function(){\
  4071.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4072.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4073.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4074.  img = new Array(10);\
  4075.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4076.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4077.  ext_drag_images[idx] = img;\
  4078.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4079. };\
  4080. };\
  4081. function dragstop(evt){\
  4082. selected_image = null;return;\
  4083. };\
  4084. function dragxy(evt){\
  4085. if( selected_image != null ){\
  4086.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4087.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4088.  var s_img = ext_drag_images[selected_image];\
  4089.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4090.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4091.  ext_drag_images[selected_image] = s_img;\
  4092.  external_ctx.clearRect(0,0,xsize,ysize);\
  4093.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4094.   var img = ext_drag_images[i];\
  4095.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4096.  };\
  4097. };\
  4098. };\
  4099. function setxy(evt){\
  4100. if( ! selected_image && evt.which == 1 ){\
  4101.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4102.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4103.  var xm = evt.clientX - external_canvas_rect.left + xoff;\
  4104.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4105.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4106.   var img = ext_drag_images[p];\
  4107.   if( img[0] == 1 ){\
  4108.    var w = img.width;\
  4109.    var h = img.height;\
  4110.    if( xm > img[6] && xm < img[6] + img[4]){\
  4111.     if( ym > img[7] && ym < img[7] + img[5]){\
  4112.      img[6] = xm;\
  4113.      img[7] = ym;\
  4114.      ext_drag_images[p] = img;\
  4115.      selected_image = p;\
  4116.      dragxy(evt);\
  4117.     };\
  4118.    };\
  4119.   };\
  4120.  };\
  4121. }\
  4122. else\
  4123. {\
  4124.  selected_image = null;\
  4125. };\
  4126. };",canvas_root_id);
  4127.     break;
  4128.  
  4129.     case DRAW_EXTERNAL_IMAGE:
  4130. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4131. draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4132. var image = new Image();\
  4133. image.src = URL;\
  4134. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4135. image.onload = function(){\
  4136.  if( x0 < 1 ){ x0 = 0; };\
  4137.  if( y0 < 1 ){ y0 = 0; };\
  4138.  if( sx < 1 ){ sx = 0; };\
  4139.  if( sy < 1 ){ sy = 0; };\
  4140.  if( width < 1 ){ width = image.width;};\
  4141.  if( height < 1 ){ height = image.height;};\
  4142.  if( swidth < 1 ){ swidth = image.width;};\
  4143.  if( sheight < 1 ){ sheight = image.height;};\
  4144.  var ml = x0 - sx;\
  4145.  var mh = y0 - sy;\
  4146.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4147.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4148.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4149.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4150.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4151. };\
  4152. };",canvas_root_id);    
  4153.     break;
  4154.    
  4155.     case DRAW_ZOOM_BUTTONS: /* 6 rectangles 15x15 px  forbidden zone for drawing : y < ysize - 15*/
  4156. fprintf(js_include_file,"\n<!-- draw zoom buttons -->\n\
  4157. draw_zoom_buttons = function(canvas_type,color,opacity){\
  4158. var obj;\
  4159. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4160.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4161. }\
  4162. else\
  4163. {\
  4164.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4165. };\
  4166. var ctx = obj.getContext(\"2d\");\
  4167. ctx.font =\"18px Ariel\";\
  4168. ctx.textAlign = \"right\";\
  4169. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4170. ctx.fillText(\"+\",xsize,ysize);\
  4171. ctx.fillText(\"\\u2212\",xsize - 15,ysize);\
  4172. ctx.fillText(\"\\u2192\",xsize - 30,ysize-2);\
  4173. ctx.fillText(\"\\u2190\",xsize - 45,ysize-2);\
  4174. ctx.fillText(\"\\u2191\",xsize - 60,ysize-2);\
  4175. ctx.fillText(\"\\u2193\",xsize - 75,ysize-2);\
  4176. ctx.fillText(\"\\u00D7\",xsize - 90,ysize-2);\
  4177. ctx.stroke();\
  4178. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4179.    
  4180.     break;
  4181.     case DRAW_GRIDFILL:/* not used for userdraw */
  4182. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4183. draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4184. var obj;\
  4185. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4186.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4187. }\
  4188. else\
  4189. {\
  4190.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4191. };\
  4192. var ctx = obj.getContext(\"2d\");\
  4193. var x,y;\
  4194. ctx.save();\
  4195. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4196. snap_x = dx;snap_y = dy;\
  4197. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4198.    ctx.moveTo(x,y0);\
  4199.    ctx.lineTo(x,ysize);\
  4200. };\
  4201. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4202.    ctx.moveTo(x0,y);\
  4203.    ctx.lineTo(xsize,y);\
  4204. };\
  4205. ctx.stroke();\
  4206. ctx.restore();\
  4207. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4208.     break;
  4209.    
  4210.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4211. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4212. draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4213. var obj;\
  4214. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4215.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4216. }\
  4217. else\
  4218. {\
  4219.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4220. };\
  4221. var ctx = obj.getContext(\"2d\");\
  4222. ctx.save();\
  4223. var img = new Image();\
  4224. img.src = URL;\
  4225. img.onload = function(){\
  4226.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4227.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4228.  }\
  4229.  else\
  4230.  {\
  4231.    var repeat = \"repeat\";\
  4232.    if(img.width > xsize - x0){\
  4233.         repeat = \"repeat-y\";\
  4234.    }\
  4235.    else\
  4236.    {\
  4237.     if( img.height > ysize -x0 ){\
  4238.      repeat = \"repeat-x\";\
  4239.     }\
  4240.    }\
  4241.    var pattern = ctx.createPattern(img,repeat);\
  4242.    ctx.rect(x0,y0,xsize,ysize);\
  4243.    ctx.fillStyle = pattern;\
  4244.  }\
  4245.  ctx.fill();\
  4246. };\
  4247. ctx.restore();\
  4248. return;\
  4249. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4250.     break;
  4251.    
  4252.     case DRAW_DOTFILL:/* not  used for userdraw */
  4253. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4254. draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4255. var obj;\
  4256. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4257.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4258. }\
  4259. else\
  4260. {\
  4261.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4262. };\
  4263. var ctx = obj.getContext(\"2d\");\
  4264. var x,y;\
  4265. ctx.closePath();\
  4266. ctx.save();\
  4267. snap_x = dx;snap_y = dy;\
  4268. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4269. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4270.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4271.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4272.   ctx.closePath();\
  4273.  }\
  4274. }\
  4275. ctx.fill();\
  4276. ctx.restore();\
  4277. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4278.     break;
  4279.  
  4280.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4281. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4282. draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4283.  var obj;\
  4284. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4285.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4286. }\
  4287. else\
  4288. {\
  4289.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4290. };\
  4291. var ctx = obj.getContext(\"2d\");\
  4292. var x;\
  4293. var y;\
  4294. ctx.save();\
  4295. ctx.lineWidth = linewidth;\
  4296. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4297. y = ysize;\
  4298. for( x = x0 ; x < xsize ; x = x + dx ){\
  4299.  ctx.moveTo(x,y0);\
  4300.  ctx.lineTo(xsize,y);\
  4301.  y = y - dy;\
  4302. };\
  4303. y = y0;\
  4304. for( x = xsize ; x > 0 ; x = x - dx){\
  4305.  ctx.moveTo(x,ysize);\
  4306.  ctx.lineTo(x0,y);\
  4307.  y = y + dy;\
  4308. };\
  4309. x = x0;\
  4310. for( y = y0 ; y < ysize ; y = y + dy ){\
  4311.  ctx.moveTo(xsize,y);\
  4312.  ctx.lineTo(x,ysize);\
  4313.  x = x + dx;\
  4314. };\
  4315. x = xsize;\
  4316. for( y = ysize ; y > y0 ; y = y - dy ){\
  4317.  ctx.moveTo(x,y0);\
  4318.  ctx.lineTo(x0,y);\
  4319.  x = x - dx;\
  4320. };\
  4321. ctx.stroke();\
  4322. ctx.restore();\
  4323. return;\
  4324. }",canvas_root_id,canvas_root_id,canvas_root_id);
  4325.     break;
  4326.    
  4327.     case DRAW_HATCHFILL:/* not used for userdraw */
  4328. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4329. draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4330.  var obj;\
  4331. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4332.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4333. }\
  4334. else\
  4335. {\
  4336.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4337. };\
  4338. var ctx = obj.getContext(\"2d\");\
  4339. var x;\
  4340. var y;\
  4341. ctx.save();\
  4342. ctx.lineWidth = linewidth;\
  4343. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4344. y = ysize;\
  4345. for( x = x0 ; x < xsize ; x = x + dx ){\
  4346.  ctx.moveTo(x,y0);\
  4347.  ctx.lineTo(xsize,y);\
  4348.  y = y - dy;\
  4349. };\
  4350. y = y0;\
  4351. for( x = xsize ; x >= dx ; x = x - dx){\
  4352.  ctx.moveTo(x,ysize);\
  4353.  ctx.lineTo(x0,y);\
  4354.  y = y + dy;\
  4355. };\
  4356. ctx.stroke();\
  4357. ctx.restore();\
  4358. return;\
  4359. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4360.     break;
  4361.     case DRAW_CIRCLES:/*  used for userdraw */
  4362. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  4363. 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){\
  4364. ctx.save();\
  4365. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4366. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4367. ctx.lineWidth = line_width;\
  4368. for(var p = 0 ; p < x_points.length ; p++ ){\
  4369.  ctx.beginPath();\
  4370.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  4371.  ctx.closePath();\
  4372.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4373.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4374.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4375.  ctx.stroke();\
  4376. }\
  4377. ctx.restore();\
  4378. return;\
  4379. };");
  4380.     break;
  4381.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  4382. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  4383. draw_polyline = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4384. ctx.save();\
  4385. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4386. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4387. ctx.lineWidth = line_width;\
  4388. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4389. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4390. ctx.clearRect(0,0,xsize,ysize);\
  4391. ctx.beginPath();\
  4392. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  4393.  ctx.moveTo(x_points[p],y_points[p]);\
  4394.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4395. }\
  4396. ctx.closePath();\
  4397. ctx.stroke();\
  4398. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4399. for(var p = 0 ; p < x_points.length ; p++ ){\
  4400.  ctx.beginPath();\
  4401.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  4402.  ctx.closePath();ctx.fill();ctx.stroke();\
  4403. };\
  4404. ctx.restore();\
  4405. return;\
  4406. };");
  4407.     break;
  4408.    
  4409.     case DRAW_SEGMENTS:/*  used for userdraw */
  4410. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  4411. draw_segments = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4412. ctx.save();\
  4413. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4414. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4415. ctx.lineWidth = line_width;\
  4416. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4417. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4418. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4419.  ctx.beginPath();\
  4420.  ctx.moveTo(x_points[p],y_points[p]);\
  4421.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4422.  ctx.closePath();\
  4423.  ctx.stroke();\
  4424.  }\
  4425.  ctx.restore();\
  4426.  return;\
  4427. };");
  4428.     break;
  4429.    
  4430.     case DRAW_LINES:/*  used for userdraw */
  4431. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  4432. function calc_line(x1,x2,y1,y2){\
  4433. var marge = 2;\
  4434. if(x1 < x2+marge && x1>x2-marge){\
  4435.  return [x1,0,x1,ysize];\
  4436. };\
  4437. if(y1 < y2+marge && y1>y2-marge){\
  4438.  return [0,y1,xsize,y1];\
  4439. };\
  4440. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  4441. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  4442. return [0,Y1,xsize,Y2];\
  4443. };\
  4444. draw_lines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4445. ctx.save();\
  4446. var line = new Array(4);\
  4447. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4448. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4449. ctx.lineWidth = line_width;\
  4450. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4451. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4452. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4453.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  4454.  ctx.beginPath();\
  4455.  ctx.moveTo(line[0],line[1]);\
  4456.  ctx.lineTo(line[2],line[3]);\
  4457.  ctx.closePath();\
  4458.  ctx.stroke();\
  4459.  }\
  4460.  ctx.restore();\
  4461.  return;\
  4462. };");
  4463.     break;
  4464.  
  4465.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  4466. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  4467. draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_translate,vector){\
  4468. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4469. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4470. ctx.lineWidth = line_width;\
  4471. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4472. var x1,x2,y1,y2;\
  4473. for(var p = 0 ; p < x_points.length ; p++ ){\
  4474.  x1 = x_points[p] - crosshair_size;\
  4475.  x2 = x_points[p] + crosshair_size;\
  4476.  y1 = y_points[p] - crosshair_size;\
  4477.  y2 = y_points[p] + crosshair_size;\
  4478.  ctx.beginPath();\
  4479.  ctx.moveTo(x1,y1);\
  4480.  ctx.lineTo(x2,y2);\
  4481.  ctx.closePath();\
  4482.  ctx.stroke();\
  4483.  ctx.beginPath();\
  4484.  ctx.moveTo(x2,y1);\
  4485.  ctx.lineTo(x1,y2);\
  4486.  ctx.closePath();\
  4487.  ctx.stroke();\
  4488. }\
  4489. ctx.restore();\
  4490.  return;\
  4491. };");
  4492.     break;
  4493.  
  4494.     case DRAW_RECTS:/*  used for userdraw */
  4495. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  4496. 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){\
  4497. ctx.save();\
  4498. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4499. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4500. ctx.lineWidth = line_width;\
  4501. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  4502. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  4503. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  4504.  ctx.beginPath();\
  4505.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  4506.  ctx.closePath();\
  4507.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4508.  ctx.stroke();\
  4509. };\
  4510. ctx.restore();\
  4511. return;\
  4512. };");
  4513.     break;
  4514.  
  4515.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  4516. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  4517. 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){\
  4518. ctx.save();\
  4519. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4520. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4521. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4522. var x,y,w,h,r;\
  4523. for(var p = 0; p < x_points.length; p = p+2){\
  4524.  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);\
  4525.  ctx.beginPath();ctx.moveTo(x + r, y);\
  4526.  ctx.lineTo(x + w - r, y);\
  4527.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  4528.  ctx.lineTo(x + w, y + h - r);\
  4529.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  4530.  ctx.lineTo(x + r, y + h);\
  4531.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  4532.  ctx.lineTo(x, y + r);\
  4533.  ctx.quadraticCurveTo(x, y, x + r, y);\
  4534.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  4535.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4536.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  4537.  ctx.stroke();\
  4538. }\
  4539. ctx.restore();\
  4540. };");
  4541.     break;
  4542.  
  4543.     case DRAW_ELLIPSES:/* not  used for userdraw */
  4544. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  4545. 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){\
  4546. var obj;\
  4547. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4548.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4549. }\
  4550. else\
  4551. {\
  4552.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4553. };\
  4554. var ctx = obj.getContext(\"2d\");\
  4555. ctx.save();\
  4556. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4557. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4558. var cx,cy,ry,rx;\
  4559. ctx.lineWidth = line_width;\
  4560. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  4561. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4562. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4563. for(var p=0;p< x_points.length;p = p+2){\
  4564.  ctx.beginPath();\
  4565.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  4566.  ctx.translate(cx - rx, cy - ry);\
  4567.  ctx.scale(rx, ry);\
  4568.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  4569.  if( use_filled == 1 ){ctx.fill();}\
  4570.  ctx.stroke();\
  4571. };\
  4572. ctx.restore();\
  4573. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4574.     break;
  4575.  
  4576.     case DRAW_PATHS: /*  used for userdraw */
  4577. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  4578. 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){\
  4579. ctx.save();\
  4580. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4581. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4582. ctx.lineWidth = line_width;\
  4583. ctx.lineJoin = \"round\";\
  4584. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4585. ctx.beginPath();\
  4586. ctx.moveTo(x_points[0],y_points[0]);\
  4587. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  4588. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  4589. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4590. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4591. ctx.stroke();\
  4592. ctx.restore();\
  4593. return;\
  4594. };");
  4595.    
  4596.     break;
  4597.     case DRAW_ARROWS:/*  used for userdraw */
  4598. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  4599. 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){\
  4600. ctx.save();\
  4601. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4602. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4603. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4604. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4605. ctx.lineWidth = line_width;\
  4606. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4607. ctx.lineCap = \"round\";\
  4608. ctx.save();\
  4609. var x1,y1,x2,y2,dx,dy,len;\
  4610. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  4611.   ctx.restore();ctx.save();\
  4612.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  4613.   len = Math.sqrt(dx*dx+dy*dy);\
  4614.   ctx.translate(x2,y2);\
  4615.   ctx.rotate(Math.atan2(dy,dx));\
  4616.   ctx.lineCap = \"round\";\
  4617.   ctx.beginPath();\
  4618.   ctx.moveTo(0,0);\
  4619.   ctx.lineTo(-len,0);\
  4620.   ctx.closePath();\
  4621.   ctx.stroke();\
  4622.   ctx.beginPath();\
  4623.   ctx.moveTo(0,0);\
  4624.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  4625.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  4626.   ctx.closePath();\
  4627.   ctx.fill();\
  4628.   if( type == 2 ){\
  4629.     ctx.restore();\
  4630.     ctx.save();\
  4631.     ctx.translate(x1,y1);\
  4632.     ctx.rotate(Math.atan2(-dy,-dx));\
  4633.     ctx.beginPath();\
  4634.     ctx.moveTo(0,0);\
  4635.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  4636.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  4637.     ctx.closePath();\
  4638.     ctx.stroke();\
  4639.     ctx.fill();\
  4640.   }\
  4641.  }\
  4642.  ctx.restore();\
  4643.  return;\
  4644. };");
  4645.     break;
  4646.  
  4647.     case DRAW_VIDEO:/* not  used for userdraw */
  4648. fprintf(js_include_file,"\n<!-- draw video -->\n\
  4649. draw_video = function(canvas_root_id,x,y,w,h,URL){\
  4650. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4651. var video_div = document.createElement(\"div\");\
  4652. canvas_div.appendChild(video_div);\
  4653. video_div.style.position = \"absolute\";\
  4654. video_div.style.left = x+\"px\";\
  4655. video_div.style.top = y+\"px\";\
  4656. video_div.style.width = w+\"px\";\
  4657. video_div.style.height = h+\"px\";\
  4658. var video = document.createElement(\"video\");\
  4659. video_div.appendChild(video);\
  4660. video.style.width = w+\"px\";\
  4661. video.style.height = h+\"px\";\
  4662. video.autobuffer = true;\
  4663. video.controls = true;video.autoplay = false;\
  4664. var src = document.createElement(\"source\");\
  4665. src.type = \"video/mp4\";\
  4666. src.src = URL;\
  4667. video.appendChild(src);\
  4668. video.load();\
  4669. return;\
  4670. };");    
  4671.     break;
  4672.    
  4673.     case DRAW_AUDIO:/* not used for userdraw */
  4674. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  4675. draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  4676. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4677. var audio_div = document.createElement(\"div\");\
  4678. canvas_div.appendChild(audio_div);\
  4679. audio_div.style.position = \"absolute\";\
  4680. audio_div.style.left = x+\"px\";\
  4681. audio_div.style.top = y+\"px\";\
  4682. audio_div.style.width = w+\"px\";\
  4683. audio_div.style.height = h+\"px\";\
  4684. var audio = document.createElement(\"audio\");\
  4685. audio_div.appendChild(audio);\
  4686. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  4687. audio.autobuffer = true;\
  4688. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  4689. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  4690. var src1 = document.createElement(\"source\");\
  4691. src1.type = \"audio/ogg\";\
  4692. src1.src = URL1;\
  4693. audio.appendChild(src1);\
  4694. var src2 = document.createElement(\"source\");\
  4695. src2.type = \"audio/mpeg\";\
  4696. src2.src = URL2;\
  4697. audio.appendChild(src2);\
  4698. audio.load();\
  4699. return;\
  4700. };");
  4701.     break;
  4702.    
  4703.     case DRAW_HTTP:/* not  used for userdraw */
  4704. fprintf(js_include_file,"\n<!-- draw http -->\n\
  4705. draw_http = function(canvas_root_id,x,y,w,h,URL){\
  4706. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4707. var http_div = document.createElement(\"div\");\
  4708. var iframe = document.createElement(\"iframe\");\
  4709. canvas_div.appendChild(http_div);\
  4710. http_div.appendChild(iframe);\
  4711. iframe.src = URL;\
  4712. iframe.setAttribute(\"width\",w);\
  4713. iframe.setAttribute(\"height\",h);\
  4714. return;\
  4715. };");
  4716.     break;
  4717.    
  4718.     case DRAW_XML:
  4719. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  4720. draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  4721. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4722. var xml_div = document.createElement(\"div\");\
  4723. canvas_div.appendChild(xml_div);\
  4724. xml_div.innerHTML = mathml;\
  4725. if(onclick != 0){\
  4726.  xml_div.onclick = function(){\
  4727.   reply[0] = onclick;\
  4728.   alert(\"send \"+onclick+\" ?\");\
  4729.  };\
  4730. };\
  4731. xml_div.style.position = \"absolute\";\
  4732. xml_div.style.left = x+\"px\";\
  4733. xml_div.style.top = y+\"px\";\
  4734. xml_div.style.width = w+\"px\";\
  4735. xml_div.style.height = h+\"px\";\
  4736. return;\
  4737. };"
  4738. );
  4739.     break;
  4740.     case DRAW_SGRAPH:
  4741. /*
  4742.  xstart = given
  4743.  ystart = given
  4744.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  4745. */
  4746. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  4747. draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  4748. 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);};\
  4749. var ctx = obj.getContext(\"2d\");\
  4750. ctx.font = fontfamily;\
  4751. var minor_opacity = 0.8*opacity;\
  4752. ctx.clearRect(0,0,xsize,ysize);\
  4753. var d_x =  1.8*font_size;\
  4754. var d_y =  ctx.measureText(\"+ymax+\").width;\
  4755. var dx = xsize / (xmax - xmin);\
  4756. var dy = ysize / (ymax - ymin);\
  4757. var zero_x = d_y + dx;\
  4758. var zero_y = ysize - dy - d_x;\
  4759. var snor_x;\
  4760. if( xstart != xmin){\
  4761.  snor_x = 0.1*xsize;\
  4762. }\
  4763. else\
  4764. {\
  4765.  snor_x = 0;\
  4766.  xstart = xmin;\
  4767. };\
  4768. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4769. ctx.lineWidth = 2;\
  4770. ctx.beginPath();\
  4771. ctx.moveTo(xsize,zero_y);\
  4772. ctx.lineTo(zero_x,zero_y);\
  4773. ctx.lineTo(zero_x,0);\
  4774. ctx.stroke();\
  4775. ctx.closePath();\
  4776. ctx.beginPath();\
  4777. ctx.moveTo(zero_x,zero_y);\
  4778. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  4779. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  4780. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  4781. ctx.lineTo(zero_x + snor_x,zero_y);\
  4782. ctx.stroke();\
  4783. ctx.closePath();\
  4784. ctx.beginPath();\
  4785. var num = xstart;\
  4786. var flipflop = 1;\
  4787. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  4788. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4789.   if( 0.5*ctx.measureText(num).width > step_x ){\
  4790.    if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};\
  4791.   };\
  4792.   if( flipflop == 1){\
  4793.    ctx.fillText(num,x - 0.5*ctx.measureText(num).width,zero_y+font_size);\
  4794.   }\
  4795.   else\
  4796.   {\
  4797.    ctx.fillText(num,x - 0.5*ctx.measureText(num).width,zero_y+2*font_size);\
  4798.   }\
  4799.   num = num + xmajor;\
  4800. };\
  4801. ctx.stroke();\
  4802. ctx.closePath();\
  4803. ctx.lineWidth = 1;\
  4804. ctx.beginPath();\
  4805. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4806.   ctx.moveTo(x,zero_y);\
  4807.   ctx.lineTo(x,0);\
  4808. };\
  4809. ctx.stroke();\
  4810. ctx.closePath();\
  4811. if( xminor > 1){\
  4812.  ctx.lineWidth = 0.5;\
  4813.  ctx.beginPath();\
  4814.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  4815.  var minor_step_x = step_x / xminor;\
  4816.  var nx;\
  4817.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  4818.    num = 1;\
  4819.    for(var p = 1 ; p < xminor ; p++){\
  4820.     nx = x + num*minor_step_x;\
  4821.     ctx.moveTo(nx,zero_y);\
  4822.     ctx.lineTo(nx,0);\
  4823.     num++;\
  4824.    };\
  4825.  };\
  4826.  ctx.stroke();\
  4827.  ctx.closePath();\
  4828.  ctx.beginPath();\
  4829.  ctx.lineWidth = 2;\
  4830.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4831.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4832.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  4833.  };\
  4834.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  4835.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  4836.  };\
  4837.  ctx.stroke();\
  4838.  ctx.closePath();\
  4839.  ctx.lineWidth = 0.5;\
  4840. };\
  4841. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  4842. if( ystart != ymin){\
  4843.  snor_y = 0.1*ysize;\
  4844. }\
  4845. else\
  4846. {\
  4847.  snor_y = 0;\
  4848.  ystart = ymin;\
  4849. };\
  4850. ctx.lineWidth = 2;\
  4851. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4852. ctx.beginPath();\
  4853. ctx.moveTo(zero_x,zero_y);\
  4854. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  4855. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  4856. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  4857. ctx.lineTo(zero_x,zero_y - snor_y);\
  4858. ctx.stroke();\
  4859. ctx.closePath();\
  4860. ctx.beginPath();\
  4861. ctx.lineWidth = 1;\
  4862. num = ystart;\
  4863. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  4864. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  4865.  ctx.moveTo(zero_x,y);\
  4866.  ctx.lineTo(xsize,y);\
  4867.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  4868.  num = num + ymajor;\
  4869. };\
  4870. ctx.stroke();\
  4871. ctx.closePath();\
  4872. if( yminor > 1){\
  4873.  ctx.lineWidth = 0.5;\
  4874.  ctx.beginPath();\
  4875.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  4876.  var minor_step_y = step_y / yminor;\
  4877.  var ny;\
  4878.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  4879.   num = 1;\
  4880.   for(var p = 1 ;p < yminor;p++){\
  4881.     ny = y + num*minor_step_y;\
  4882.     ctx.moveTo(zero_x,ny);\
  4883.     ctx.lineTo(xsize,ny);\
  4884.     num++;\
  4885.    };\
  4886.  };\
  4887.  ctx.stroke();\
  4888.  ctx.closePath();\
  4889.  ctx.lineWidth = 2;\
  4890.  ctx.beginPath();\
  4891.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4892.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  4893.   ctx.moveTo(zero_x,y);\
  4894.   ctx.lineTo(zero_x+12,y);\
  4895.  };\
  4896.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  4897.   ctx.moveTo(zero_x,y);\
  4898.   ctx.lineTo(zero_x+6,y);\
  4899.  };\
  4900.  ctx.stroke();\
  4901.  ctx.closePath();\
  4902. };\
  4903. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  4904. if( typeof legend%d  !== 'undefined' ){\
  4905.  ctx.globalAlpha = 1.0;\
  4906.  var y_offset = 2*font_size;\
  4907.  var txt;var txt_size;\
  4908.  var x_offset = xsize - 2*font_size;\
  4909.  var l_length = legend%d.length;var barcolor = new Array();\
  4910.  if( typeof legendcolors%d !== 'undefined' ){\
  4911.   for(var p = 0 ; p < l_length ; p++){\
  4912.    barcolor[p] = legendcolors%d[p];\
  4913.   };\
  4914.  }else{\
  4915.   if( barcolor.length == 0 ){\
  4916.    for(var p = 0 ; p < l_length ; p++){\
  4917.     barcolor[p] = stroke_color;\
  4918.    };\
  4919.   };\
  4920.  };\
  4921.  for(var p = 0; p < l_length; p++){\
  4922.   ctx.fillStyle = barcolor[p];\
  4923.   txt = legend%d[p];\
  4924.   txt_size = ctx.measureText(txt).width;\
  4925.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  4926.   y_offset = parseInt(y_offset + 1.5*font_size);\
  4927.  };\
  4928. };\
  4929. if( typeof xaxislabel !== 'undefined' ){\
  4930.   ctx.fillStyle = \'#000000\';\
  4931.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  4932.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  4933. };\
  4934. if( typeof yaxislabel !== 'undefined'){\
  4935.   ctx.save();\
  4936.   ctx.fillStyle = \'#000000\';\
  4937.   var txt_size = ctx.measureText(yaxislabel).width;\
  4938.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  4939.   ctx.rotate(-0.5*Math.PI);\
  4940.   ctx.fillText(yaxislabel,0,0);\
  4941.   ctx.save();\
  4942. };\
  4943. };\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);
  4944.     break;
  4945.  
  4946.     case DRAW_GRID:/* not used for userdraw */
  4947. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  4948. 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){\
  4949. var obj;\
  4950. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4951. obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4952. }\
  4953. else\
  4954. {\
  4955. obj = create_canvas%d(canvas_type,xsize,ysize);\
  4956. };\
  4957. var ctx = obj.getContext(\"2d\");\
  4958. ctx.clearRect(0,0,xsize,ysize);\
  4959. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4960. ctx.save();\
  4961. if( use_translate == 1 ){ctx.translate(vector[0],vector[1]);};\
  4962. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  4963. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4964. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  4965. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  4966. ctx.font = font_family;\
  4967. var xstep = xsize*xmajor/(xmax - xmin);\
  4968. var ystep = ysize*ymajor/(ymax - ymin);\
  4969. var x2step = xstep / xminor;\
  4970. var y2step = ystep / yminor;\
  4971. var zero_x;var zero_y;var f_x;var f_y;\
  4972. if(xmin < 0 ){zero_x = x2px(0);f_x = 1;}else{zero_x = x2px(xmin);f_x = -1;}\
  4973. if(ymin < 0 ){zero_y = y2px(0);f_y = 1;}else{zero_y = y2px(ymin);f_y = -1;}\
  4974. ctx.beginPath();\
  4975. ctx.lineWidth = line_width;\
  4976. ctx.strokeStyle = stroke_color;\
  4977. for(var p = zero_x ; p < xsize; p = p + xstep){\
  4978. ctx.moveTo(p,0);\
  4979. ctx.lineTo(p,ysize);\
  4980. };\
  4981. for(var p = zero_x ; p > 0; p = p - xstep){\
  4982. ctx.moveTo(p,0);\
  4983. ctx.lineTo(p,ysize);\
  4984. };\
  4985. for(var p = zero_y ; p < ysize; p = p + ystep){\
  4986. ctx.moveTo(0,p);\
  4987. ctx.lineTo(xsize,p);\
  4988. };\
  4989. for(var p = zero_y ; p > 0; p = p - ystep){\
  4990. ctx.moveTo(0,p);\
  4991. ctx.lineTo(xsize,p);\
  4992. };\
  4993. if( typeof xaxislabel !== 'undefined' ){\
  4994. ctx.save();\
  4995. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  4996. var corr =  ctx.measureText(xaxislabel).width;\
  4997. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  4998. ctx.restore();\
  4999. };\
  5000. if( typeof yaxislabel !== 'undefined' ){\
  5001. ctx.save();\
  5002. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  5003. corr =  ctx.measureText(yaxislabel).width;\
  5004. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  5005. ctx.rotate(-0.5*Math.PI);\
  5006. ctx.fillText(yaxislabel,0,0);\
  5007. ctx.restore();\
  5008. };\
  5009. ctx.stroke();\
  5010. ctx.closePath();\
  5011. if( use_axis == 1 ){\
  5012. ctx.beginPath();\
  5013. ctx.strokeStyle = stroke_color;\
  5014. ctx.lineWidth = 0.6*line_width;\
  5015. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5016.  ctx.moveTo(p,0);\
  5017.  ctx.lineTo(p,ysize);\
  5018. };\
  5019. for(var p = zero_x ; p > 0; p = p - x2step){\
  5020.  ctx.moveTo(p,0);\
  5021.  ctx.lineTo(p,ysize);\
  5022. };\
  5023. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5024.  ctx.moveTo(0,p);\
  5025.  ctx.lineTo(xsize,p);\
  5026. };\
  5027. for(var p = zero_y ; p > 0; p = p - y2step){\
  5028.  ctx.moveTo(0,p);\
  5029.  ctx.lineTo(xsize,p);\
  5030. };\
  5031. ctx.stroke();\
  5032. ctx.closePath();\
  5033. ctx.beginPath();\
  5034. ctx.lineWidth = 2*line_width;\
  5035. ctx.strokeStyle = axis_color;\
  5036. ctx.moveTo(0,zero_y);\
  5037. ctx.lineTo(xsize,zero_y);\
  5038. ctx.moveTo(zero_x,0);\
  5039. ctx.lineTo(zero_x,ysize);\
  5040. ctx.stroke();\
  5041. ctx.closePath();\
  5042. ctx.lineWidth = line_width+0.5;\
  5043. ctx.beginPath();\
  5044. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5045.  ctx.moveTo(p,zero_y-tics_length);\
  5046.  ctx.lineTo(p,zero_y+tics_length);\
  5047. };\
  5048. for(var p = zero_x ; p > 0; p = p - xstep){\
  5049.  ctx.moveTo(p,zero_y-tics_length);\
  5050.  ctx.lineTo(p,zero_y+tics_length);\
  5051. };\
  5052. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5053.  ctx.moveTo(zero_x-tics_length,p);\
  5054.  ctx.lineTo(zero_x+tics_length,p);\
  5055. };\
  5056. for(var p = zero_y ; p > 0; p = p - ystep){\
  5057.  ctx.moveTo(zero_x-tics_length,p);\
  5058.  ctx.lineTo(zero_x+tics_length,p);\
  5059. };\
  5060. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5061.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5062.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5063. };\
  5064. for(var p = zero_x ; p > 0; p = p - x2step){\
  5065.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5066.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5067. };\
  5068. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5069.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5070.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5071. };\
  5072. for(var p = zero_y ; p > 0; p = p - y2step){\
  5073.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5074.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5075. };\
  5076. ctx.stroke();\
  5077. ctx.closePath();\
  5078. if( use_axis_numbering == 1 ){\
  5079.  var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5080.  if( x_strings != null ){\
  5081.   var f = 1.4;\
  5082.   var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5083.   for(var p = 0 ; p < len ; p = p+2){\
  5084.     var x_nums = x2px(eval(x_strings[p]));\
  5085.     var x_text = x_strings[p+1];\
  5086.     corr = ctx.measureText(x_text).width;\
  5087.     skip = 1.2*corr/xstep;\
  5088.     if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5089.     if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5090.     ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5091.   }\
  5092.  }\
  5093.  else\
  5094.  {\
  5095.   corr=0;skip = 1;cnt = px2x(zero_x);\
  5096.   prec = Math.log(precision)/(Math.log(10));\
  5097.   for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5098.    if(skip == 0 ){\
  5099.      disp_cnt = cnt.toFixed(prec);\
  5100.      corr = ctx.measureText(disp_cnt).width;\
  5101.      skip = parseInt(1.2*corr/xstep);\
  5102.      ctx.fillText(disp_cnt,p-0.5*corr,parseInt(zero_y+(1.4*f_x*font_size)));\
  5103.    }\
  5104.    else\
  5105.    {\
  5106.     skip--;\
  5107.    };\
  5108.    cnt = cnt + xmajor;\
  5109.   };\
  5110.   cnt = px2x(zero_x);skip = 1;\
  5111.   for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5112.    if(skip == 0 ){\
  5113.     disp_cnt = cnt.toFixed(prec);\
  5114.     corr = ctx.measureText(disp_cnt).width;\
  5115.     skip = parseInt(1.2*corr/xstep);\
  5116.     ctx.fillText(disp_cnt,p-0.5*corr,parseInt(zero_y+(1.4*f_x*font_size)));\
  5117.    }\
  5118.    else\
  5119.    {\
  5120.     skip--;\
  5121.    };\
  5122.    cnt = cnt - xmajor;\
  5123.   };\
  5124.  };\
  5125.  if( y_strings != null ){\
  5126.   var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5127.   for(var p = 0 ; p < len ; p = p+2){\
  5128.    var y_nums = y2px(eval(y_strings[p]));\
  5129.    var y_text = y_strings[p+1];\
  5130.    var f = 1.4;\
  5131.    corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5132.    if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5133.    ctx.fillText(y_text,zero_x - corr,y_nums);\
  5134.   };\
  5135.  }\
  5136.  else\
  5137.  {\
  5138.   corr = 0;cnt = px2y(zero_y);skip = 1;\
  5139.   for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5140.    if(skip == 0 ){\
  5141.     skip = parseInt(1.4*font_size/ystep);\
  5142.     disp_cnt = cnt.toFixed(prec);\
  5143.     if(f_y == 1){corr = 2 + tics_length + ctx.measureText(disp_cnt).width;}\
  5144.     ctx.fillText(disp_cnt,parseInt(zero_x - corr),parseInt(p+(0.4*font_size)));\
  5145.    }\
  5146.    else\
  5147.    {\
  5148.     skip--;\
  5149.    };\
  5150.    cnt = cnt - ymajor;\
  5151.   }\
  5152.   corr = 0;cnt = px2y(zero_y);skip = 1;\
  5153.   for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5154.    if(skip == 0 ){\
  5155.     skip = parseInt(1.4*font_size/ystep);\
  5156.     disp_cnt = cnt.toFixed(prec);\
  5157.     if(f_y == 1){corr = 2 + tics_length + ctx.measureText(disp_cnt).width;}\
  5158.     ctx.fillText(disp_cnt,parseInt(zero_x - corr),parseInt(p+(0.4*font_size)));\
  5159.    }\
  5160.    else\
  5161.    {\
  5162.     skip--;\
  5163.    };\
  5164.    cnt = cnt + ymajor;\
  5165.   }\
  5166.  };\
  5167. };\
  5168. ctx.strokeStyle = stroke_color;\
  5169. ctx.lineWidth = 2;\
  5170. ctx.beginPath();\
  5171. ctx.rect(0,0,xsize,ysize);\
  5172. ctx.closePath();\
  5173. ctx.stroke();\
  5174. };\
  5175. if( typeof linegraph_0 !== 'undefined' ){\
  5176. ctx.restore();\
  5177. ctx.save();\
  5178. ctx.globalAlpha = 1.0;\
  5179. var i = 0;\
  5180. var line_name = eval('linegraph_'+i);\
  5181. while ( typeof line_name !== 'undefined' ){\
  5182.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5183.  ctx.lineWidth = parseInt(line_name[1]);\
  5184.  if(line_name[2] == \"1\"){\
  5185.   var d1 = parseInt(line_name[3]);\
  5186.   var d2 = parseInt(line_name[4]);\
  5187.   if(ctx.setLineDash){ ctx.setLineDash(d1,d2); } else { ctx.mozDash = [d1,d2];};\
  5188.  }\
  5189.  else\
  5190.  {\
  5191.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5192.  if(ctx.mozDash){ctx.mozDash = null;}\
  5193.  };\
  5194.  var data_x = new Array();\
  5195.  var data_y = new Array();\
  5196.  var lb = line_name.length;\
  5197.  var idx = 0;\
  5198.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5199.   data_x[idx] = x2px(line_name[p]);\
  5200.   data_y[idx] = y2px(line_name[p+1]);\
  5201.   idx++;\
  5202.  };\
  5203.  for( var p = 0; p < idx ; p++){\
  5204.   ctx.beginPath();\
  5205.   ctx.moveTo(data_x[p],data_y[p]);\
  5206.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5207.   ctx.stroke();\
  5208.   ctx.closePath();\
  5209.  };\
  5210.  i++;\
  5211.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  5212. };\
  5213. };\
  5214. var barcolor = new Array();\
  5215. if( typeof barchart%d  !== 'undefined' ){\
  5216. ctx.restore();\
  5217. ctx.save();\
  5218. ctx.globalAlpha = 1.0;\
  5219. var bar_x = new Array();\
  5220. var bar_y = new Array();\
  5221. var lb = barchart%d.length;\
  5222. var idx = 0;\
  5223. for( var p = 0 ; p < lb ; p = p + 3 ){\
  5224.  bar_x[idx] = x2px(barchart%d[p]);\
  5225.  bar_y[idx] = y2px(barchart%d[p+1]);\
  5226.  barcolor[idx] = barchart%d[p+2];\
  5227.  idx++;\
  5228. };\
  5229. var dx = parseInt(0.6*xstep);\
  5230. ctx.globalAlpha = fill_opacity;\
  5231. for( var p = 0; p < idx ; p++ ){\
  5232.  ctx.beginPath();\
  5233.  ctx.strokeStyle = barcolor[p];\
  5234.  ctx.fillStyle = barcolor[p];\
  5235.  ctx.rect(bar_x[p]-0.5*dx,bar_y[p],dx,zero_y - bar_y[p]);\
  5236.  ctx.fill();\
  5237.  ctx.stroke();\
  5238.  ctx.closePath();\
  5239. };\
  5240. };\
  5241. if( typeof legend%d  !== 'undefined' ){\
  5242. ctx.globalAlpha = 1.0;\
  5243. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5244. var y_offset = 2*font_size;\
  5245. var txt;var txt_size;\
  5246. var x_offset = xsize - 2*font_size;\
  5247. var l_length = legend%d.length;\
  5248. if( typeof legendcolors%d !== 'undefined' ){\
  5249.  for(var p = 0 ; p < l_length ; p++){\
  5250.    barcolor[p] = legendcolors%d[p];\
  5251.  };\
  5252. }else{\
  5253.  if( barcolor.length == 0 ){\
  5254.   for(var p = 0 ; p < l_length ; p++){\
  5255.    barcolor[p] = stroke_color;\
  5256.   };\
  5257.  };\
  5258. };\
  5259. for(var p = 0; p < l_length; p++){\
  5260.  ctx.fillStyle = barcolor[p];\
  5261.  txt = legend%d[p];\
  5262.  txt_size = ctx.measureText(txt).width;\
  5263.  ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5264.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5265. };\
  5266. };\
  5267. ctx.restore();\
  5268. return;\
  5269. };",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);
  5270.     break;
  5271.    
  5272.     case DRAW_PIECHART:
  5273. fprintf(js_include_file,"\n<!-- draw piechars -->\n\
  5274. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,font_size,font_family){\
  5275. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5276.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5277. }\
  5278. else\
  5279. {\
  5280.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5281. };\
  5282. var ld = data_color_list.length;\
  5283. var sum = 0;\
  5284. var idx = 0;\
  5285. var colors = new Array();\
  5286. var data = new Array();\
  5287. for(var p = 0;p < ld; p = p + 2){\
  5288.  data[idx] = parseFloat(data_color_list[p]);\
  5289.  sum = sum + data[idx];\
  5290.  colors[idx] = data_color_list[p+1];\
  5291.  idx++;\
  5292. };\
  5293. var ctx = obj.getContext(\"2d\");\
  5294. ctx.save();\
  5295. var angle;\
  5296. var angle_end = 0;\
  5297. var offset = Math.PI / 2;\
  5298. ctx.globalAlpha = fill_opacity;\
  5299. for(var p=0; p < idx; p++){\
  5300.  ctx.beginPath();\
  5301.  ctx.fillStyle = colors[p];\
  5302.  ctx.moveTo(x_center,y_center);\
  5303.  angle = Math.PI * (2 * data[p] / sum);\
  5304.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  5305.  ctx.lineTo(x_center, y_center);\
  5306.  ctx.fill();\
  5307.  ctx.closePath();\
  5308.  angle_end  = angle_end + angle;\
  5309. };\
  5310. if( typeof legend%d  !== 'undefined' ){\
  5311.  ctx.globalAlpha = 1.0;\
  5312.  ctx.font = font_size+\"px \"+font_family;\
  5313.  var y_offset = font_size; \
  5314.  var x_offset = 0;\
  5315.  var txt;var txt_size;\
  5316.  for(var p = 0; p < idx; p++){\
  5317.   ctx.fillStyle = colors[p];\
  5318.   txt = legend%d[p];\
  5319.   txt_size = ctx.measureText(txt).width;\
  5320.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  5321.   ctx.fillText(legend%d[p],x_center + radius - x_offset, y_center - radius + y_offset);\
  5322.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5323.  };\
  5324. };\
  5325. ctx.restore();\
  5326. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5327.    
  5328.     break;
  5329.     case DRAW_ARCS:
  5330. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  5331. 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){\
  5332. var obj;\
  5333. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5334.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5335. }\
  5336. else\
  5337. {\
  5338.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5339. };\
  5340. var ctx = obj.getContext(\"2d\");\
  5341. ctx.save();\
  5342. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  5343. if( use_translate == 1 ){ctx.translate(vector[0],vector[1]);};\
  5344. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  5345. if(end < start){var tmp = end;end = start;start=tmp;};\
  5346. start=360-start;\
  5347. end=360-end;\
  5348. ctx.lineWidth = line_width;\
  5349. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5350. if( use_filled == 1 ){\
  5351.  ctx.beginPath();\
  5352.  ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  5353.  var x1 = xc + r*Math.cos(Math.PI*start/180);\
  5354.  var y1 = yc + r*Math.sin(Math.PI*start/180);\
  5355.  var x2 = xc + r*Math.cos(Math.PI*end/180);\
  5356.  var y2 = yc + r*Math.sin(Math.PI*end/180);\
  5357.  ctx.beginPath();\
  5358.  ctx.moveTo(x1,y1);\
  5359.  ctx.lineTo(xc,yc);\
  5360.  ctx.moveTo(xc,yc);\
  5361.  ctx.lineTo(x2,y2);\
  5362.  ctx.closePath();\
  5363.  ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5364.  ctx.fill();\
  5365.  ctx.stroke();\
  5366. }\
  5367. else\
  5368. {\
  5369.    ctx.beginPath();\
  5370.    ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5371.    ctx.stroke();\
  5372.    ctx.closePath();\
  5373. }\
  5374. ctx.restore();\
  5375. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5376.    
  5377.     break;
  5378.     case DRAW_TEXTS:
  5379. fprintf(js_include_file,"\n<!-- draw text -->\n\
  5380. draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_translate,vector){\
  5381.  var obj;\
  5382.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5383.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5384.  }\
  5385.  else\
  5386.  {\
  5387.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  5388.  };\
  5389.  var ctx = obj.getContext(\"2d\");\
  5390.  if(angle2 == 0 && angle != 0){\
  5391.   ctx.save();\
  5392.   if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5393.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5394.  };\
  5395.  if( font_family.indexOf('px') != null ){\
  5396.   ctx.font = font_family;\
  5397.  }\
  5398.  else\
  5399.  {\
  5400.   ctx.font = \"+font_size+'px '+font_family \";\
  5401.  };\
  5402.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5403.  if(angle2 != 0){\
  5404.   ctx.save();\
  5405.   ctx.translate(x,y);\
  5406.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  5407.   ctx.fillText(text,0,0);\
  5408.   ctx.restore();\
  5409.  }else{ctx.fillText(text,x,y);};\
  5410. ctx.restore();\
  5411. return;\
  5412. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5413.    
  5414.     break;
  5415.     case DRAW_CURVE:
  5416. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  5417. 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){\
  5418. var obj;\
  5419. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5420.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5421. }\
  5422. else\
  5423. {\
  5424.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5425. };\
  5426. var ctx = obj.getContext(\"2d\");\
  5427. ctx.save();\
  5428. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5429. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5430. ctx.beginPath();ctx.lineWidth = line_width;\
  5431. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5432. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5433. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  5434. for(var p = 1 ; p < x_points.length ; p++){\
  5435.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  5436.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  5437.  }\
  5438.  else\
  5439.  {\
  5440.   ctx.stroke();\
  5441.   ctx.beginPath();\
  5442.   p++;\
  5443.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  5444.  };\
  5445. };\
  5446. ctx.stroke();\
  5447. ctx.restore();\
  5448. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5449.     break;
  5450.    
  5451.     case DRAW_INPUTS:
  5452. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  5453. draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  5454. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5455. var input = document.createElement(\"input\");\
  5456. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5457. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5458. input.setAttribute(\"size\",size);\
  5459. input.setAttribute(\"value\",value);\
  5460. if( readonly == 0 ){ input.setAttribute(\"readonly\",\"readonly\");};\
  5461. canvas_div.appendChild(input);};");
  5462.     break;
  5463.    
  5464.     case DRAW_TEXTAREAS:
  5465. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  5466. draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  5467. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5468. var textarea = document.createElement(\"textarea\");\
  5469. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5470. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5471. textarea.setAttribute(\"cols\",cols);\
  5472. textarea.setAttribute(\"rows\",rows);\
  5473. textarea.innerHTML = value;\
  5474. canvas_div.appendChild(textarea);};");
  5475.     break;
  5476.    
  5477. case DRAW_PIXELS:
  5478. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  5479. draw_setpixel = function(x,y,color,opacity,pixelsize){\
  5480. var canvas = create_canvas%d(10,xsize,ysize);\
  5481. var d = 0.5*pixelsize;\
  5482. var ctx = canvas.getContext(\"2d\");\
  5483. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  5484. ctx.clearRect(0,0,xsize,ysize);\
  5485. for(var p=0; p<x.length;p++){\
  5486.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  5487. };\
  5488. ctx.fill();ctx.stroke();\
  5489. };",canvas_root_id);
  5490. break;
  5491.  
  5492. case DRAW_CLOCK:
  5493. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  5494. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  5495. var clock_ctx = clock_canvas.getContext(\"2d\");\
  5496. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  5497. clock_ctx.save();\
  5498. this.type = type || 0;\
  5499. this.interaction = interaction || 0;\
  5500. this.H = H;\
  5501. this.M = M;\
  5502. this.S = S;\
  5503. this.xc = xc || xsize/2;\
  5504. this.yc = yc || ysize/2;\
  5505. this.radius = radius || xsize/4;\
  5506. var font_size = parseInt(0.2*this.radius);\
  5507. this.H_color = h_color || \"blue\";\
  5508. this.M_color = m_color || \"blue\";\
  5509. this.S_color = s_color || \"blue\";\
  5510. this.fg_color = fg_color || \"red\";\
  5511. this.bg_color = bg_color || \"white\";\
  5512. clock_ctx.translate(this.xc,this.yc);\
  5513. clock_ctx.beginPath();\
  5514. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  5515. clock_ctx.fillStyle = this.bg_color;\
  5516. clock_ctx.fill();\
  5517. clock_ctx.closePath();\
  5518. clock_ctx.beginPath();\
  5519. clock_ctx.font = font_size+\"px Arial\";\
  5520. clock_ctx.fillStyle = this.fg_color;\
  5521. clock_ctx.textAlign = \"center\";\
  5522. clock_ctx.textBaseline = 'middle';\
  5523. var angle;var x1,y1,x2,y2;\
  5524. var angle_cos;var angle_sin;\
  5525. switch(type){\
  5526. case 0:clock_ctx.beginPath();\
  5527. for(var p = 1; p <= 12 ; p++){\
  5528.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5529.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5530.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5531.  clock_ctx.moveTo(x1,y1);\
  5532.  clock_ctx.lineTo(x2,y2);\
  5533. };\
  5534. for(var p = 1; p <= 60 ; p++){\
  5535.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5536.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5537.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5538.  clock_ctx.moveTo(x1,y1);\
  5539.  clock_ctx.lineTo(x2,y2);\
  5540. };\
  5541. clock_ctx.closePath();\
  5542. clock_ctx.stroke();\
  5543. break;\
  5544. case 1:\
  5545. 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;\
  5546. case 2:\
  5547. for(var p= 1; p <= 12 ; p++){ angle = (p - 3) * (Math.PI * 2) / 12;x1 = 0.8*this.radius*Math.cos(angle);y1 = 0.8*this.radius*Math.sin(angle);clock_ctx.fillText(p, x1, y1);};\
  5548. clock_ctx.beginPath();\
  5549. for(var p = 1; p <= 12 ; p++){\
  5550.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5551.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5552.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5553.  clock_ctx.moveTo(x1,y1);\
  5554.  clock_ctx.lineTo(x2,y2);\
  5555. };\
  5556. for(var p = 1; p <= 60 ; p++){\
  5557.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5558.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5559.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5560.  clock_ctx.moveTo(x1,y1);\
  5561.  clock_ctx.lineTo(x2,y2);\
  5562. };\
  5563. clock_ctx.closePath();\
  5564. clock_ctx.stroke();\
  5565. break;\
  5566. };\
  5567. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  5568. clock_ctx.rotate(angle);\
  5569. clock_ctx.beginPath();\
  5570. clock_ctx.moveTo(-3, -2);\
  5571. clock_ctx.lineTo(-3, 2);\
  5572. clock_ctx.lineTo(this.radius * 0.7, 1);\
  5573. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  5574. clock_ctx.fillStyle = this.H_color;\
  5575. clock_ctx.fill();\
  5576. clock_ctx.rotate(-angle);\
  5577. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  5578. clock_ctx.rotate(angle);\
  5579. clock_ctx.beginPath();\
  5580. clock_ctx.moveTo(-3, -2);\
  5581. clock_ctx.lineTo(-3, 2);\
  5582. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  5583. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  5584. clock_ctx.fillStyle = this.M_color;\
  5585. clock_ctx.fill();\
  5586. clock_ctx.rotate(-angle);\
  5587. angle = (this.S - 15) * 2 * Math.PI / 60;\
  5588. clock_ctx.rotate(angle);\
  5589. clock_ctx.beginPath();\
  5590. clock_ctx.moveTo(0,0);\
  5591. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  5592. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  5593. clock_ctx.strokeStyle = this.S_color;\
  5594. clock_ctx.stroke();\
  5595. clock_ctx.restore();\
  5596. };",canvas_root_id,CLOCK_CANVAS);
  5597. break;
  5598.  
  5599. case DRAW_LATTICE:
  5600. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  5601. 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){\
  5602. var obj;\
  5603. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5604.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5605. }\
  5606. else\
  5607. {\
  5608.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5609. };\
  5610. var ctx = obj.getContext(\"2d\");\
  5611. ctx.save();\
  5612. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5613. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5614. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5615. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5616. var radius = line_width;\
  5617. var x = 0;\
  5618. var y = 0;\
  5619. var x_step_px = xsize/(xmax-xmin);\
  5620. var y_step_px = ysize/(ymax-ymin);\
  5621. var xv1 = dx1*x_step_px;\
  5622. var yv1 = dy1*y_step_px;\
  5623. var xv2 = dx2*x_step_px;\
  5624. var yv2 = dy2*y_step_px;\
  5625. for(var p = 0; p < n1 ;p++){\
  5626.  x = p*xv1 + x0;\
  5627.  y = p*yv1 + y0;\
  5628.  for(var c = 0; c < n2 ; c++){\
  5629.   ctx.beginPath();\
  5630.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  5631.   ctx.fill();\
  5632.   ctx.stroke();\
  5633.   ctx.closePath();\
  5634.  };\
  5635. };\
  5636. ctx.restore();\
  5637. return;\
  5638. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5639.     break;
  5640. case DRAW_XYLOGSCALE:
  5641. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  5642. 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\
  5643. var obj;\n\
  5644. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5645.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5646. }\n\
  5647. else\n\
  5648. {\n\
  5649.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5650. };\n\
  5651. var ctx = obj.getContext(\"2d\");\n\
  5652. ctx.clearRect(0,0,xsize,ysize);\
  5653. ctx.save();\n\
  5654. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  5655. var x_min = Math.log(xmin)/Math.log(xlogbase);\n\
  5656. var x_max = Math.log(xmax)/Math.log(xlogbase);\n\
  5657. var y_min = Math.log(ymin)/Math.log(ylogbase);\n\
  5658. var y_max = Math.log(ymax)/Math.log(ylogbase);\n\
  5659. if(use_axis_numbering == 1){\
  5660.  ctx.font = font_family;\n\
  5661.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\n\
  5662.  ymarge = parseInt(1.5*font_size);\n\
  5663.  ctx.save();\n\
  5664.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5665.  ctx.rect(0,0,xmarge,ysize);\n\
  5666.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5667.  ctx.fill();\n\
  5668.  ctx.restore();\n\
  5669. }else{xmarge = 0;ymarge = 0;};\n\
  5670. if( typeof xaxislabel !== 'undefined' ){\
  5671.  ctx.save();\n\
  5672.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5673.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5674.  corr =  ctx.measureText(xaxislabel).width;\n\
  5675.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5676.  ctx.restore();\n\
  5677. };\n\
  5678. if( typeof yaxislabel !== 'undefined' ){\
  5679.  ctx.save();\n\
  5680.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5681.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5682.  corr = ctx.measureText(yaxislabel).width;\n\
  5683.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5684.  ctx.rotate(-0.5*Math.PI);\n\
  5685.  ctx.fillText(yaxislabel,0,0);\n\
  5686.  ctx.restore();\n\
  5687. };\n\
  5688. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5689. ctx.lineWidth = line_width;\n\n\
  5690. for(var p = x_min; p <= x_max ; p++){\n\
  5691.  num = Math.pow(xlogbase,p);\n\n\
  5692.  for(var i = 1 ; i < xlogbase ; i++){\n\
  5693.   x_e = x2px(i*num);\n\n\
  5694.   if( i == 1 ){\
  5695.    ctx.lineWidth = line_width;\n\n\
  5696.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\n\
  5697.    if( use_axis_numbering == 1 && p > x_min){\
  5698.      xtxt = xlogbase+'^'+p.toFixed(0);\n\
  5699.      corr = 0.5*(ctx.measureText(xtxt).width);\n\
  5700.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\n\
  5701.    };\n\
  5702.   }else{\
  5703.    ctx.lineWidth = 0.2*line_width;\n\n\
  5704.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\n\
  5705.   };\n\
  5706.   if( x_e >= xmarge ){\
  5707.    ctx.beginPath();\n\
  5708.    ctx.moveTo(x_e,0);\n\
  5709.    ctx.lineTo(x_e,ysize - ymarge);\n\n\
  5710.    ctx.stroke();\n\
  5711.    ctx.closePath();\n\
  5712.   };\
  5713.  };\n\
  5714. };\n\
  5715. for(var p = y_min; p <= y_max ; p++){\n\
  5716.  num = Math.pow(ylogbase,p);\n\
  5717.  for(var i = 1 ; i < ylogbase ; i++){\n\
  5718.   y_e = y2px(i*num);\n\
  5719.   if( i == 1 ){\n\
  5720.    ctx.lineWidth = line_width;\n\
  5721.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5722.    if( use_axis_numbering == 1 && p > y_min){\n\
  5723.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\n\
  5724.    };\n\
  5725.   }else{\n\
  5726.    ctx.lineWidth = 0.2*line_width;\n\
  5727.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\n\
  5728.   };\n\
  5729.   ctx.beginPath();\n\
  5730.   ctx.moveTo(xmarge,y_e);\n\
  5731.   ctx.lineTo(xsize,y_e);\n\
  5732.   ctx.stroke();\n\
  5733.   ctx.closePath();\n\
  5734.  };\n\
  5735. };\n\
  5736. ctx.restore();\
  5737. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5738.     break;
  5739.  
  5740. case DRAW_XLOGSCALE:
  5741. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  5742. 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\
  5743. var obj;\n\
  5744. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5745.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5746. }\n\
  5747. else\n\
  5748. {\n\
  5749.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5750. };\n\
  5751. var ctx = obj.getContext(\"2d\");\n\
  5752. ctx.clearRect(0,0,xsize,ysize);\
  5753. ctx.save();\n\
  5754. ctx.lineWidth = line_width;\n\
  5755. var prec = Math.log(precision)/Math.log(10);\
  5756. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  5757. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  5758. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  5759. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  5760. if(use_axis_numbering == 1){\
  5761.  ctx.font = font_family;\n\
  5762.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\n\
  5763.  ymarge = parseInt(1.5*font_size);\n\
  5764.  ctx.save();\n\
  5765.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5766.  ctx.rect(0,0,xmarge,ysize);\n\
  5767.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5768.  ctx.fill();\n\
  5769.  ctx.restore();\n\
  5770. }else{xmarge = 0;ymarge = 0;};\n\
  5771. if( typeof xaxislabel !== 'undefined' ){\
  5772.  ctx.save();\n\
  5773.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5774.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5775.  corr =  ctx.measureText(xaxislabel).width;\n\
  5776.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5777.  ctx.restore();\n\
  5778. };\n\
  5779. if( typeof yaxislabel !== 'undefined' ){\
  5780.  ctx.save();\n\
  5781.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5782.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5783.  corr = ctx.measureText(yaxislabel).width;\n\
  5784.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5785.  ctx.rotate(-0.5*Math.PI);\n\
  5786.  ctx.fillText(yaxislabel,0,0);\n\
  5787.  ctx.restore();\n\
  5788. };\n\
  5789. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5790. ctx.lineWidth = line_width;\n\n\
  5791. for(var p = x_min; p <= x_max ; p++){\n\
  5792.  num = Math.pow(xlogbase,p);\n\
  5793.  for(var i = 1 ; i < xlogbase ; i++){\n\
  5794.   x_e = x2px(i*num);\n\
  5795.   if( i == 1 ){\
  5796.     ctx.lineWidth = line_width;\n\
  5797.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5798.    if( use_axis_numbering == 1 && p > x_min ){\
  5799.      xtxt = xlogbase+'^'+p.toFixed(0);\
  5800.      corr = 0.5*(ctx.measureText(xtxt).width);\
  5801.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  5802.    };\
  5803.   }else{\
  5804.    ctx.lineWidth = 0.2*line_width;\n\
  5805.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5806.   };\
  5807.   if( x_e >= xmarge ){\
  5808.    ctx.beginPath();\n\
  5809.    ctx.moveTo(x_e,0);\n\
  5810.    ctx.lineTo(x_e,ysize - ymarge);\n\n\
  5811.    ctx.stroke();\n\
  5812.    ctx.closePath();\n\
  5813.   };\
  5814.  };\
  5815. };\n\
  5816. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  5817. var minor_step = stepy / yminor;\
  5818. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  5819.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5820.  ctx.lineWidth = line_width;\n\
  5821.  ctx.beginPath();\n\
  5822.  ctx.moveTo(xmarge,y);\n\
  5823.  ctx.lineTo(xsize,y);\n\
  5824.  ctx.stroke();\n\
  5825.  ctx.closePath();\n\
  5826.  if( use_axis_numbering == 1){\
  5827.   ytxt = (px2y(y)).toFixed(prec);\
  5828.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  5829.  };\
  5830.  for(var dy = 1 ; dy < yminor ; dy++){\
  5831.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5832.   ctx.lineWidth = 0.2*line_width;\n\
  5833.   ctx.beginPath();\n\
  5834.   ctx.moveTo(xmarge,y+dy*minor_step);\
  5835.   ctx.lineTo(xsize,y+dy*minor_step);\n\
  5836.   ctx.stroke();\n\
  5837.   ctx.closePath();\n\
  5838.  };\
  5839. };\
  5840. ctx.restore();\n\
  5841. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5842.     break;
  5843. case DRAW_YLOGSCALE:
  5844. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  5845. 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\
  5846. var obj;\n\
  5847. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5848.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5849. }\n\
  5850. else\n\
  5851. {\n\
  5852.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5853. };\n\
  5854. var ctx = obj.getContext(\"2d\");\n\
  5855. ctx.clearRect(0,0,xsize,ysize);\
  5856. ctx.save();\n\
  5857. ctx.lineWidth = line_width;\n\
  5858. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  5859. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  5860. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;\
  5861. if(use_axis_numbering == 1){\
  5862.  ctx.font = font_family;\n\
  5863.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\n\
  5864.  ymarge = 2*font_size;\n\
  5865.  ctx.save();\n\
  5866.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5867.  ctx.rect(0,0,xmarge,ysize);\n\
  5868.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5869.  ctx.fill();\n\
  5870.  ctx.restore();\n\
  5871. }else{xmarge = 0;ymarge = 0;};\n\
  5872. if( typeof xaxislabel !== 'undefined' ){\
  5873.  ctx.save();\n\
  5874.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5875.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5876.  corr =  ctx.measureText(xaxislabel).width;\n\
  5877.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5878.  ctx.restore();\n\
  5879. };\n\
  5880. if( typeof yaxislabel !== 'undefined' ){\
  5881.  ctx.save();\n\
  5882.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5883.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5884.  corr = ctx.measureText(yaxislabel).width;\n\
  5885.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5886.  ctx.rotate(-0.5*Math.PI);\n\
  5887.  ctx.fillText(yaxislabel,0,0);\n\
  5888.  ctx.restore();\n\
  5889. };\n\
  5890. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5891. ctx.lineWidth = line_width;\n\n\
  5892. for(var p = y_min; p <= y_max ; p++){\n\
  5893.  num = Math.pow(ylogbase,p);\n\
  5894.  for(var i = 1 ; i < ylogbase ; i++){\n\
  5895.   y_e = y2px(i*num);\n\
  5896.   if( i == 1 ){\
  5897.    ctx.lineWidth = line_width;\n\
  5898.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5899.    if( use_axis_numbering == 1 && p > y_min){\
  5900.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  5901.    };\
  5902.   }else{\
  5903.    ctx.lineWidth = 0.2*line_width;\n\
  5904.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5905.   };\
  5906.   ctx.beginPath();\n\
  5907.   ctx.moveTo(xmarge,y_e);\n\
  5908.   ctx.lineTo(xsize,y_e);\n\
  5909.   ctx.stroke();\n\
  5910.   ctx.closePath();\n\
  5911.  };\n\
  5912. };\n\
  5913. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  5914. var minor_step = stepx / xminor;\
  5915. var prec = Math.log(precision)/Math.log(10);\
  5916. var xtxt;var corr;var flip = 0;\
  5917. for(var x = stepx ; x < xsize ; x = x + stepx){\
  5918.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5919.  ctx.lineWidth = line_width;\n\
  5920.  ctx.beginPath();\n\
  5921.  ctx.moveTo(x,ysize-ymarge);\n\
  5922.  ctx.lineTo(x,0);\n\
  5923.  ctx.stroke();\n\
  5924.  ctx.closePath();\n\
  5925.  if( use_axis_numbering == 1){\
  5926.   xtxt = (px2x(x)).toFixed(prec);\
  5927.   corr = 0.5*(ctx.measureText(xtxt).width);\
  5928.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  5929.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  5930.  };\
  5931.  for(var dx = 1 ; dx < xminor ; dx++){\
  5932.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5933.   ctx.lineWidth = 0.2*line_width;\n\
  5934.   ctx.beginPath();\n\
  5935.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  5936.   ctx.lineTo(x+dx*minor_step,0);\n\
  5937.   ctx.stroke();\n\
  5938.   ctx.closePath();\n\
  5939.  };\
  5940. };\
  5941. ctx.restore();\n\
  5942. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5943.  
  5944.     break;
  5945.  
  5946.  
  5947.     default:break;
  5948.    }
  5949.   }
  5950.  }
  5951.   return;
  5952. }
  5953.  
  5954. void check_string_length(int L){
  5955.  if(L<1 || L > MAX_BUFFER-1){
  5956.   canvas_error("problem with your arguments to command...");
  5957.  }
  5958.  return;
  5959. }
  5960.  
  5961.  
  5962. int get_token(FILE *infile){
  5963.         int     c,i=0;
  5964.         char    temp[MAX_INT], *input_type;
  5965.         char    *line="line",
  5966.         *audio="audio",
  5967.         *blink="blink",
  5968.         *arrowhead="arrowhead",
  5969.         *crosshairsize="crosshairsize",
  5970.         *crosshair="crosshair",
  5971.         *crosshairs="crosshairs",
  5972.         *audioobject="audioobject",
  5973.         *style="style",
  5974.         *mouse="mouse",
  5975.         *userdraw="userdraw",
  5976.         *highlight="highlight",
  5977.         *http="http",
  5978.         *rays="rays",
  5979.         *dashtype="dashtype",
  5980.         *dashed="dashed",
  5981.         *filled="filled",
  5982.         *lattice="lattice",
  5983.         *parallel="parallel",
  5984.         *segment="segment",
  5985.         *dsegment="dsegment",
  5986.         *seg="seg",
  5987.         *bgimage="bgimage",
  5988.         *bgcolor="bgcolor",
  5989.         *strokecolor="strokecolor",
  5990.         *backgroundimage="backgroundimage",
  5991.         *text="text",
  5992.         *textup="textup",
  5993.         *mouseprecision="mouseprecision",
  5994.         *precision="precision",
  5995.         *plotsteps="plotsteps",
  5996.         *plotstep="plotstep",
  5997.         *tsteps="tsteps",
  5998.         *curve="curve",
  5999.         *dcurve="dcurve",
  6000.         *plot="plot",
  6001.         *dplot="dplot",
  6002.         *levelcurve="levelcurve",
  6003.         *fontsize="fontsize",
  6004.         *fontcolor="fontcolor",
  6005.         *axis="axis",
  6006.         *axisnumbering="axisnumbering",
  6007.         *axisnumbers="axisnumbers",
  6008.         *arrow="arrow",
  6009.         *darrow="darrow",
  6010.         *arrow2="arrow2",
  6011.         *darrow2="darrow2",
  6012.         *zoom="zoom",
  6013.         *grid="grid",
  6014.         *hline="hline",
  6015.         *dhline="dhline",
  6016.         *drag="drag",
  6017.         *horizontalline="horizontalline",
  6018.         *vline="vline",
  6019.         *dvline="dvline",
  6020.         *verticalline="verticalline",
  6021.         *triangle="triangle",
  6022.         *ftriangle="ftriangle",
  6023.         *mathml="mathml",
  6024.         *html="html",
  6025.         *input="input",
  6026.         *button="button",
  6027.         *inputstyle="inputstyle",
  6028.         *textarea="textarea",
  6029.         *trange="trange",
  6030.         *ranget="ranget",
  6031.         *xrange="xrange",
  6032.         *yrange="yrange",
  6033.         *rangex="rangex",
  6034.         *rangey="rangey",
  6035.         *polyline="polyline",
  6036.         *lines="lines",
  6037.         *poly="poly",
  6038.         *polygon="polygon",
  6039.         *fpolygon="fpolygon",
  6040.         *fpoly="fpoly",
  6041.         *filledpoly="filledpoly",
  6042.         *filledpolygon="filledpolygon",
  6043.         *rect="rect",
  6044.         *frect="frect",
  6045.         *rectangle="rectangle",
  6046.         *frectangle="frectangle",
  6047.         *square="square",
  6048.         *fsquare="fsquare",
  6049.         *dline="dline",
  6050.         *arc="arc",
  6051.         *filledarc="filledarc",
  6052.         *size="size",
  6053.         *string="string",
  6054.         *stringup="stringup",
  6055.         *copy="copy",
  6056.         *copyresized="copyresized",
  6057.         *opacity="opacity",
  6058.         *transparent="transparent",
  6059.         *fill="fill",
  6060.         *slider="slider",
  6061.         *point="point",
  6062.         *points="points",
  6063.         *linewidth="linewidth",
  6064.         *circle="circle",
  6065.         *fcircle="fcircle",
  6066.         *disk="disk",
  6067.         *comment="#",
  6068.         *end="end",
  6069.         *ellipse="ellipse",
  6070.         *fellipse="fellipse",
  6071.         *rotate="rotate",
  6072.         *affine="affine",
  6073.         *killaffine="killaffine",
  6074.         *fontfamily="fontfamily",
  6075.         *fillcolor="fillcolor",
  6076.         *clicktile="clicktile",
  6077.         *clicktile_colors="clicktile_colors",
  6078.         *translation="translation",
  6079.         *translate="translate",
  6080.         *killtranslation="killtranslation",
  6081.         *killtranslate="killtranslate",
  6082.         *onclick="onclick",
  6083.         *roundrect="roundrect",
  6084.         *froundrect="froundrect",
  6085.         *roundrectangle="roundrectangle",
  6086.         *patternfill="patternfill",
  6087.         *hatchfill="hatchfill",
  6088.         *diafill="diafill",
  6089.         *diamondfill="diamondfill",
  6090.         *dotfill="dotfill",
  6091.         *gridfill="gridfill",
  6092.         *imagefill="imagefill",
  6093.         *xlogbase="xlogbase",
  6094.         *ylogbase="ylogbase",
  6095.         *xlogscale="xlogscale",
  6096.         *ylogscale="ylogscale",
  6097.         *xylogscale="xylogscale",
  6098.         *intooltip="intooltip",
  6099.         *replyformat="replyformat",
  6100.         *floodfill="floodfill",
  6101.         *filltoborder="filltoborder",
  6102.         *clickfill="clickfill",
  6103.         *setpixel="setpixel",
  6104.         *pixels="pixels",
  6105.         *pixelsize="pixelsize",
  6106.         *clickfillmarge="clickfillmarge",
  6107.         *xaxis="xaxis",
  6108.         *yaxis="yaxis",
  6109.         *xaxistext="xaxistext",
  6110.         *yaxistext="yaxistext",
  6111.         *piechart="piechart",
  6112.         *legend="legend",
  6113.         *legendcolors="legendcolors",
  6114.         *xlabel="xlabel",
  6115.         *ylabel="ylabel",
  6116.         *barchart="barchart",
  6117.         *linegraph="linegraph",
  6118.         *clock="clock",
  6119.         *animate="animate",
  6120.         *video="video",
  6121.         *status="status",
  6122.         *snaptogrid="snaptogrid",
  6123.         *xsnaptogrid="xsnaptogrid",
  6124.         *ysnaptogrid="ysnaptogrid",
  6125.         *userinput_xy="userinput_xy",
  6126.         *usertextarea_xy="usertextarea_xy",
  6127.         *jsmath="jsmath",
  6128.         *trace_jscurve="trace_jscurve",
  6129.         *setlimits="setlimits",
  6130.         *jscurve="jscurve",
  6131.         *jsplot="jsplot",
  6132.         *sgraph="sgraph";
  6133.  
  6134.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6135.             if( i == 0 && (c == ' ' || c == '\t') ){
  6136.         continue; /* white spaces or tabs allowed before first command identifier */
  6137.             }
  6138.             else
  6139.             {
  6140.         if( c == ' ' || c == '\t' ){
  6141.             break;
  6142.         }
  6143.         else
  6144.         {
  6145.             temp[i] = c;
  6146.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6147.             i++;
  6148.         }
  6149.             }
  6150.             if(temp[0] == '#') break;
  6151.         }
  6152.         if (c == EOF) finished = 1;
  6153.  
  6154.         if (c == '\n' || c == '\r') {
  6155.         line_number++;
  6156.         if (i == 0) { return EMPTY; }
  6157.         } else if (c == EOF) {
  6158.         return 0;
  6159.         }
  6160.  
  6161.         temp[i]='\0';
  6162.         input_type=(char*)my_newmem(strlen(temp));
  6163.         snprintf(input_type,sizeof(temp),"%s",temp);
  6164.  
  6165.         if( strcmp(input_type, size) == 0 ){
  6166.         free(input_type);
  6167.         return SIZE;
  6168.         }
  6169.         if( strcmp(input_type, xrange) == 0 ){
  6170.         free(input_type);
  6171.         return XRANGE;
  6172.         }
  6173.         if( strcmp(input_type, rangex) == 0 ){
  6174.         free(input_type);
  6175.         return XRANGE;
  6176.         }
  6177.         if( strcmp(input_type, trange) == 0 ){
  6178.         free(input_type);
  6179.         return TRANGE;
  6180.         }
  6181.         if( strcmp(input_type, ranget) == 0 ){
  6182.         free(input_type);
  6183.         return TRANGE;
  6184.         }
  6185.         if( strcmp(input_type, yrange) == 0 ){
  6186.         free(input_type);
  6187.         return YRANGE;
  6188.         }
  6189.         if( strcmp(input_type, rangey) == 0 ){
  6190.         free(input_type);
  6191.         return YRANGE;
  6192.         }
  6193.         if( strcmp(input_type, linewidth) == 0 ){
  6194.         free(input_type);
  6195.         return LINEWIDTH;
  6196.         }
  6197.         if( strcmp(input_type, dashed) == 0 ){
  6198.         free(input_type);
  6199.         return DASHED;
  6200.         }
  6201.         if( strcmp(input_type, dashtype) == 0 ){
  6202.         free(input_type);
  6203.         return DASHTYPE;
  6204.         }
  6205.         if( strcmp(input_type, axisnumbering) == 0 ){
  6206.         free(input_type);
  6207.         return AXIS_NUMBERING;
  6208.         }
  6209.         if( strcmp(input_type, axisnumbers) == 0 ){
  6210.         free(input_type);
  6211.         return AXIS_NUMBERING;
  6212.         }
  6213.         if( strcmp(input_type, axis) == 0 ){
  6214.         free(input_type);
  6215.         return AXIS;
  6216.         }
  6217.         if( strcmp(input_type, grid) == 0 ){
  6218.         free(input_type);
  6219.         return GRID;
  6220.         }
  6221.         if( strcmp(input_type, parallel) == 0 ){
  6222.         free(input_type);
  6223.         return PARALLEL;
  6224.         }
  6225.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6226.         free(input_type);
  6227.         return HLINE;
  6228.         }
  6229.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6230.         free(input_type);
  6231.         return VLINE;
  6232.         }
  6233.         if( strcmp(input_type, line) == 0 ){
  6234.         free(input_type);
  6235.         return LINE;
  6236.         }
  6237.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6238.         free(input_type);
  6239.         return SEGMENT;
  6240.         }
  6241.         if( strcmp(input_type, dsegment) == 0 ){
  6242.         free(input_type);
  6243.         use_dashed = TRUE;
  6244.         return SEGMENT;
  6245.         }
  6246.         if( strcmp(input_type, crosshairsize) == 0 ){
  6247.         free(input_type);
  6248.         return CROSSHAIRSIZE;
  6249.         }
  6250.         if( strcmp(input_type, arrowhead) == 0 ){
  6251.         free(input_type);
  6252.         return ARROWHEAD;
  6253.         }
  6254.         if( strcmp(input_type, crosshairs) == 0 ){
  6255.         free(input_type);
  6256.         return CROSSHAIRS;
  6257.         }
  6258.         if( strcmp(input_type, crosshair) == 0 ){
  6259.         free(input_type);
  6260.         return CROSSHAIR;
  6261.         }
  6262.         if( strcmp(input_type, onclick) == 0 ){
  6263.         free(input_type);
  6264.         return ONCLICK;
  6265.         }
  6266.         if( strcmp(input_type, drag) == 0 ){
  6267.         free(input_type);
  6268.         return DRAG;
  6269.         }
  6270.         if( strcmp(input_type, userdraw) == 0 ){
  6271.         free(input_type);
  6272.         return USERDRAW;
  6273.         }
  6274.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  6275.         free(input_type);
  6276.         return STYLE;
  6277.         }
  6278.         if( strcmp(input_type, fillcolor) == 0 ){
  6279.         free(input_type);
  6280.         return FILLCOLOR;
  6281.         }
  6282.         if( strcmp(input_type, strokecolor) == 0 ){
  6283.         free(input_type);
  6284.         return STROKECOLOR;
  6285.         }
  6286.         if( strcmp(input_type, filled) == 0  ){
  6287.         free(input_type);
  6288.         return FILLED;
  6289.         }
  6290.         if( strcmp(input_type, http) == 0 ){
  6291.         free(input_type);
  6292.         return HTTP;
  6293.         }
  6294.         if( strcmp(input_type, rays) == 0 ){
  6295.         free(input_type);
  6296.         return RAYS;
  6297.         }
  6298.         if( strcmp(input_type, lattice) == 0 ){
  6299.         free(input_type);
  6300.         return LATTICE;
  6301.         }
  6302.         if( strcmp(input_type, bgimage) == 0 ){
  6303.         free(input_type);
  6304.         return BGIMAGE;
  6305.         }
  6306.         if( strcmp(input_type, bgcolor) == 0 ){
  6307.         free(input_type);
  6308.         return BGCOLOR;
  6309.         }
  6310.         if( strcmp(input_type, backgroundimage) == 0 ){
  6311.         free(input_type);
  6312.         return BGIMAGE;
  6313.         }
  6314.         if( strcmp(input_type, text) == 0 ){
  6315.         free(input_type);
  6316.         return FLY_TEXT;
  6317.         }
  6318.         if( strcmp(input_type, textup) == 0 ){
  6319.         free(input_type);
  6320.         return FLY_TEXTUP;
  6321.         }
  6322.         if( strcmp(input_type, mouse) == 0 ){
  6323.         free(input_type);
  6324.         return MOUSE;
  6325.         }
  6326.         if( strcmp(input_type, mouseprecision) == 0 ){
  6327.         free(input_type);
  6328.         return MOUSE_PRECISION;
  6329.         }
  6330.         if( strcmp(input_type, precision) == 0 ){
  6331.         free(input_type);
  6332.         return MOUSE_PRECISION;
  6333.         }
  6334.         if( strcmp(input_type, curve) == 0 ){
  6335.         free(input_type);
  6336.         return CURVE;
  6337.         }
  6338.         if( strcmp(input_type, dcurve) == 0 ){
  6339.         use_dashed = TRUE;
  6340.         free(input_type);
  6341.         return CURVE;
  6342.         }
  6343.         if( strcmp(input_type, plot) == 0 ){
  6344.         free(input_type);
  6345.         return CURVE;
  6346.         }
  6347.         if( strcmp(input_type, dplot) == 0 ){
  6348.         use_dashed = TRUE;
  6349.         free(input_type);
  6350.         return CURVE;
  6351.         }
  6352.         if( strcmp(input_type, levelcurve) == 0 ){
  6353.         free(input_type);
  6354.         return LEVELCURVE;
  6355.         }
  6356.         if( strcmp(input_type, plotsteps) == 0 ){
  6357.         free(input_type);
  6358.         return PLOTSTEPS;
  6359.         }
  6360.         if( strcmp(input_type, plotstep) == 0 ){
  6361.         free(input_type);
  6362.         return PLOTSTEPS;
  6363.         }
  6364.         if( strcmp(input_type, tsteps) == 0 ){
  6365.         free(input_type);
  6366.         return PLOTSTEPS;
  6367.         }
  6368.         if( strcmp(input_type, fontsize) == 0 ){
  6369.         free(input_type);
  6370.         return FONTSIZE;
  6371.         }
  6372.         if( strcmp(input_type, fontcolor) == 0 ){
  6373.         free(input_type);
  6374.         return FONTCOLOR;
  6375.         }
  6376.         if( strcmp(input_type, arrow) == 0 ){
  6377.         free(input_type);
  6378.         return ARROW;
  6379.         }
  6380.         if( strcmp(input_type, arrow2) == 0 ){
  6381.         free(input_type);
  6382.         return ARROW2;
  6383.         }
  6384.         if( strcmp(input_type, darrow) == 0 ){
  6385.         free(input_type);
  6386.         return ARROW;
  6387.         }
  6388.         if( strcmp(input_type, darrow2) == 0 ){
  6389.         free(input_type);
  6390.         use_dashed = TRUE;
  6391.         return ARROW2;
  6392.         }
  6393.         if( strcmp(input_type, zoom) == 0 ){
  6394.         free(input_type);
  6395.         return ZOOM;
  6396.         }
  6397.         if( strcmp(input_type, triangle) == 0 ){
  6398.         free(input_type);
  6399.         return TRIANGLE;
  6400.         }
  6401.         if( strcmp(input_type, ftriangle) == 0 ){
  6402.         free(input_type);
  6403.         use_filled = TRUE;
  6404.         return TRIANGLE;
  6405.         }
  6406.         if( strcmp(input_type, input) == 0 ){
  6407.         free(input_type);
  6408.         return INPUT;
  6409.         }
  6410.         if( strcmp(input_type, inputstyle) == 0 ){
  6411.         free(input_type);
  6412.         return INPUTSTYLE;
  6413.         }
  6414.         if( strcmp(input_type, textarea) == 0 ){
  6415.         free(input_type);
  6416.         return TEXTAREA;
  6417.         }
  6418.         if( strcmp(input_type, mathml) == 0 ){
  6419.         free(input_type);
  6420.         return MATHML;
  6421.         }
  6422.         if( strcmp(input_type, html) == 0 ){
  6423.         free(input_type);
  6424.         return MATHML;
  6425.         }
  6426.         if( strcmp(input_type, fontfamily) == 0 ){
  6427.         free(input_type);
  6428.         return FONTFAMILY;
  6429.         }
  6430.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  6431.         free(input_type);
  6432.         return POLYLINE;
  6433.         }
  6434.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  6435.         free(input_type);
  6436.         return RECT;
  6437.         }
  6438.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  6439.         free(input_type);
  6440.         return ROUNDRECT;
  6441.         }
  6442.         if( strcmp(input_type, froundrect) == 0 ){
  6443.         free(input_type);
  6444.         use_filled = TRUE;
  6445.         return ROUNDRECT;
  6446.         }
  6447.         if( strcmp(input_type, square) == 0 ){
  6448.         free(input_type);
  6449.         return SQUARE;
  6450.         }
  6451.         if( strcmp(input_type, fsquare) == 0 ){
  6452.         free(input_type);
  6453.         use_filled = TRUE;
  6454.         return SQUARE;
  6455.         }
  6456.         if( strcmp(input_type, dline) == 0 ){
  6457.         use_dashed = TRUE;
  6458.         free(input_type);
  6459.         return LINE;
  6460.         }
  6461.         if( strcmp(input_type, dvline) == 0 ){
  6462.         use_dashed = TRUE;
  6463.         free(input_type);
  6464.         return VLINE;
  6465.         }
  6466.         if( strcmp(input_type, dhline) == 0 ){
  6467.         use_dashed = TRUE;
  6468.         free(input_type);
  6469.         return HLINE;
  6470.         }
  6471.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  6472.         use_filled = TRUE;
  6473.         free(input_type);
  6474.         return RECT;
  6475.         }
  6476.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  6477.         use_filled = TRUE;
  6478.         free(input_type);
  6479.         return CIRCLE;
  6480.         }
  6481.         if( strcmp(input_type, circle) == 0 ){
  6482.         free(input_type);
  6483.         return CIRCLE;
  6484.         }
  6485.         if( strcmp(input_type, point) == 0 ){
  6486.         free(input_type);
  6487.         return POINT;
  6488.         }
  6489.         if( strcmp(input_type, points) == 0 ){
  6490.         free(input_type);
  6491.         return POINTS;
  6492.         }
  6493.         if( strcmp(input_type, filledarc) == 0 ){
  6494.         use_filled = TRUE;
  6495.         free(input_type);
  6496.         return ARC;
  6497.         }
  6498.         if( strcmp(input_type, arc) == 0 ){
  6499.         free(input_type);
  6500.         return ARC;
  6501.         }
  6502.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  6503.         free(input_type);
  6504.         return POLY;
  6505.         }
  6506.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  6507.         use_filled = TRUE;
  6508.         free(input_type);
  6509.         return POLY;
  6510.         }
  6511.         if( strcmp(input_type, ellipse) == 0){
  6512.         free(input_type);
  6513.         return ELLIPSE;
  6514.         }
  6515.         if( strcmp(input_type, fill) == 0 ){
  6516.         free(input_type);
  6517.         return FLOODFILL;
  6518.         }
  6519.         if( strcmp(input_type, string) == 0 ){
  6520.         free(input_type);
  6521.         return STRING;
  6522.         }
  6523.         if( strcmp(input_type, stringup) == 0 ){
  6524.         free(input_type);
  6525.         return STRINGUP;
  6526.         }
  6527.         if( strcmp(input_type, opacity) == 0 ){
  6528.         free(input_type);
  6529.         return OPACITY;
  6530.         }
  6531.         if( strcmp(input_type, comment) == 0){
  6532.         free(input_type);
  6533.         return COMMENT;
  6534.         }
  6535.         if( strcmp(input_type, end) == 0){
  6536.         free(input_type);
  6537.         return END;
  6538.         }
  6539.         if( strcmp(input_type, fellipse) == 0){
  6540.         free(input_type);
  6541.         use_filled = TRUE;
  6542.         return ELLIPSE;
  6543.         }      
  6544.         if( strcmp(input_type, blink) == 0 ){
  6545.         free(input_type);
  6546.         return BLINK;
  6547.         }
  6548.         if( strcmp(input_type, button) == 0){
  6549.         free(input_type);
  6550.         return BUTTON;
  6551.         }
  6552.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  6553.         free(input_type);
  6554.         return TRANSLATION;
  6555.         }
  6556.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  6557.         free(input_type);
  6558.         return KILLTRANSLATION;
  6559.         }
  6560.         if( strcmp(input_type, rotate) == 0){
  6561.         free(input_type);
  6562.         return ROTATE;
  6563.         }
  6564.         if( strcmp(input_type, affine) == 0){
  6565.         free(input_type);
  6566.         return AFFINE;
  6567.         }
  6568.         if( strcmp(input_type, killaffine) == 0){
  6569.         free(input_type);
  6570.         return KILLAFFINE;
  6571.         }
  6572.         if( strcmp(input_type, audio) == 0 ){
  6573.         free(input_type);
  6574.         return AUDIO;
  6575.         }
  6576.         if( strcmp(input_type, audioobject) == 0 ){
  6577.         free(input_type);
  6578.         return AUDIOOBJECT;
  6579.         }
  6580.         if( strcmp(input_type, slider) == 0 ){
  6581.         free(input_type);
  6582.         return SLIDER;
  6583.         }
  6584.         if( strcmp(input_type, copy) == 0 ){
  6585.         free(input_type);
  6586.         return COPY;
  6587.         }
  6588.         if( strcmp(input_type, copyresized) == 0 ){
  6589.         free(input_type);
  6590.         return COPYRESIZED;
  6591.         }
  6592.         if( strcmp(input_type, patternfill) == 0 ){
  6593.         free(input_type);
  6594.         return PATTERNFILL;
  6595.         }
  6596.         if( strcmp(input_type, hatchfill) == 0 ){
  6597.         free(input_type);
  6598.         return HATCHFILL;
  6599.         }
  6600.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  6601.         free(input_type);
  6602.         return DIAMONDFILL;
  6603.         }
  6604.         if( strcmp(input_type, dotfill) == 0 ){
  6605.         free(input_type);
  6606.         return DOTFILL;
  6607.         }
  6608.         if( strcmp(input_type, gridfill) == 0 ){
  6609.         free(input_type);
  6610.         return GRIDFILL;
  6611.         }
  6612.         if( strcmp(input_type, imagefill) == 0 ){
  6613.         free(input_type);
  6614.         return IMAGEFILL;
  6615.         }
  6616.         if( strcmp(input_type, clicktile_colors) == 0 ){
  6617.         free(input_type);
  6618.         return CLICKTILE_COLORS;
  6619.         }
  6620.         if( strcmp(input_type, clicktile) == 0 ){
  6621.         free(input_type);
  6622.         return CLICKTILE;
  6623.         }
  6624.         if( strcmp(input_type, xlogscale) == 0 ){
  6625.         free(input_type);
  6626.         return XLOGSCALE;
  6627.         }
  6628.         if( strcmp(input_type, ylogscale) == 0 ){
  6629.         free(input_type);
  6630.         return YLOGSCALE;
  6631.         }
  6632.         if( strcmp(input_type, xylogscale) == 0 ){
  6633.         free(input_type);
  6634.         return XYLOGSCALE;
  6635.         }
  6636.         if( strcmp(input_type, ylogscale) == 0 ){
  6637.         free(input_type);
  6638.         return YLOGSCALE;
  6639.         }
  6640.         if( strcmp(input_type, xlogbase) == 0 ){
  6641.         free(input_type);
  6642.         return XLOGBASE;
  6643.         }
  6644.         if( strcmp(input_type, ylogbase) == 0 ){
  6645.         free(input_type);
  6646.         return YLOGBASE;
  6647.         }
  6648.         if( strcmp(input_type, intooltip) == 0 ){
  6649.         free(input_type);
  6650.         return INTOOLTIP;
  6651.         }
  6652.         if( strcmp(input_type,video) == 0 ){
  6653.         free(input_type);
  6654.         return VIDEO;
  6655.         }
  6656.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  6657.         free(input_type);
  6658.         return FLOODFILL;
  6659.         }      
  6660.         if( strcmp(input_type,filltoborder) == 0 ){
  6661.         free(input_type);
  6662.         return FILLTOBORDER;
  6663.         }      
  6664.         if( strcmp(input_type,clickfill) == 0 ){
  6665.         free(input_type);
  6666.         return CLICKFILL;
  6667.         }      
  6668.         if( strcmp(input_type, replyformat) == 0 ){
  6669.         free(input_type);
  6670.         return REPLYFORMAT;
  6671.         }
  6672.         if( strcmp(input_type, pixelsize) == 0 ){
  6673.         free(input_type);
  6674.         return PIXELSIZE;
  6675.         }
  6676.         if( strcmp(input_type, setpixel) == 0 ){
  6677.         free(input_type);
  6678.         return SETPIXEL;
  6679.         }
  6680.         if( strcmp(input_type, pixels) == 0 ){
  6681.         free(input_type);
  6682.         return PIXELS;
  6683.         }
  6684.         if( strcmp(input_type, clickfillmarge) == 0 ){
  6685.         free(input_type);
  6686.         return CLICKFILLMARGE;
  6687.         }
  6688.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  6689.         free(input_type);
  6690.         return X_AXIS_STRINGS;
  6691.         }
  6692.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  6693.         free(input_type);
  6694.         return Y_AXIS_STRINGS;
  6695.         }
  6696.         if( strcmp(input_type, piechart) == 0  ){
  6697.         free(input_type);
  6698.         return PIECHART;
  6699.         }
  6700.         if( strcmp(input_type, barchart) == 0  ){
  6701.         free(input_type);
  6702.         return BARCHART;
  6703.         }
  6704.         if( strcmp(input_type, linegraph) == 0  ){
  6705.         free(input_type);
  6706.         return LINEGRAPH;
  6707.         }
  6708.         if( strcmp(input_type, clock) == 0  ){
  6709.         free(input_type);
  6710.         return CLOCK;
  6711.         }
  6712.         if( strcmp(input_type, legend) == 0  ){
  6713.         free(input_type);
  6714.         return LEGEND;
  6715.         }
  6716.         if( strcmp(input_type, legendcolors) == 0  ){
  6717.         free(input_type);
  6718.         return LEGENDCOLORS;
  6719.         }
  6720.         if( strcmp(input_type, xlabel) == 0  ){
  6721.         free(input_type);
  6722.         return XLABEL;
  6723.         }
  6724.         if( strcmp(input_type, ylabel) == 0  ){
  6725.         free(input_type);
  6726.         return YLABEL;
  6727.         }
  6728.         if( strcmp(input_type, animate) == 0  ){
  6729.         free(input_type);
  6730.         return ANIMATE;
  6731.         }
  6732.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  6733.         if( strcmp(input_type, transparent) == 0 ){
  6734.         free(input_type);
  6735.         return TRANSPARENT;
  6736.         }
  6737.         if( strcmp(input_type, status) == 0 ){
  6738.         free(input_type);
  6739.         return STATUS;
  6740.         }
  6741.         if( strcmp(input_type, snaptogrid) == 0 ){
  6742.         free(input_type);
  6743.         return SNAPTOGRID;
  6744.         }
  6745.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  6746.         free(input_type);
  6747.         return XSNAPTOGRID;
  6748.         }
  6749.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  6750.         free(input_type);
  6751.         return YSNAPTOGRID;
  6752.         }
  6753.         if( strcmp(input_type, userinput_xy) == 0 ){
  6754.         free(input_type);
  6755.         return USERINPUT_XY;
  6756.         }
  6757.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  6758.         free(input_type);
  6759.         return USERTEXTAREA_XY;
  6760.         }
  6761.         if( strcmp(input_type, sgraph) == 0 ){
  6762.         free(input_type);
  6763.         return SGRAPH;
  6764.         }
  6765.         if( strcmp(input_type, jsmath) == 0 ){
  6766.         free(input_type);
  6767.         return JSMATH;
  6768.         }
  6769.         if( strcmp(input_type, trace_jscurve) == 0 ){
  6770.         free(input_type);
  6771.         return TRACE_JSCURVE;
  6772.         }
  6773.         if( strcmp(input_type, jscurve) == 0  ||  strcmp(input_type, jsplot) == 0 ){
  6774.         free(input_type);
  6775.         return JSCURVE;
  6776.         }
  6777.         if( strcmp(input_type, setlimits) == 0 ){
  6778.         free(input_type);
  6779.         return SETLIMITS;
  6780.         }
  6781.         free(input_type);
  6782.         ungetc(c,infile);
  6783.         return 0;
  6784. }
  6785.  
  6786.  
  6787.