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  1. /*
  2. 27/7/2013 version 0.01
  3. "Inspired" by FLY program: http://martin.gleeson.com/fly
  4. *********************************************************************************
  5. * J.M. Evers 7/2013                                                             *
  6. * This is all just amateur scriblings... So no copyrights.                      *
  7. * This source code file, and compiled objects derived from it,                  *
  8. * can be used and distributed without restriction, including for commercial use *
  9. * No warrenty whatsoever                                                        *
  10. *********************************************************************************
  11. */
  12. #include "../../Lib/libwims.h"
  13. #include "canvasdraw.h"
  14. #include <assert.h>
  15. #include "canvasmacro.c"
  16.  
  17. /******************************************************************************
  18. **  Internal Functions
  19. ******************************************************************************/
  20. void    add_to_buffer(char *tmp); /* add tmp_buffer to the buffer */
  21. void    sync_input(FILE *infile);/* proceed with inputfile */
  22. void    canvas_error(char *msg);
  23. void    add_javascript_functions(int js_functions[], int canvas_root_id);
  24. void    reset();/* reset some global variables like "use_filled" , "use_dashed" */
  25. int     get_token(FILE *infile); /* read next char until EOL*/
  26. int     x2px(double x);
  27. int     y2px(double y);
  28. double  px2x(int x);
  29. double  px2y(int y);
  30. double  get_real(FILE *infile,int last); /* read a values; calculation and symbols allowed */
  31. char    *str_replace ( const char *word, const char *sub_word, const char *rep_word );
  32. char    *get_color(FILE *infile,int last); /* read hex-color or colorname -> hex */
  33. char    *get_string(FILE *infile,int last); /* get the string at theend of a command */
  34. char    *get_string_argument(FILE *infile,int last); /* the same, but with "comma" as  separator */
  35. char    *convert_hex2rgb(char *hexcolor);
  36. void    add_read_canvas(int reply_format);
  37. void    make_js_include(int canvas_root_id);
  38. void    check_string_length(int length);/* checks if the length of string argument of command is correct */
  39. FILE    *js_include_file;
  40. FILE    *get_file(int *line_number, char **filename);
  41. FILE    *infile;    /* will be stdin */
  42. /******************************************************************************
  43. ** global
  44. ******************************************************************************/
  45. int finished = FALSE;/* main variable for signalling the end of the fly-script ; if finished = 1 ; write to stdout or canvasz */
  46. int line_number = 1;/* used in canvas_error() ; keep track of line number in canvasdraw/fly - script */
  47. /* set some variables to avoid trouble (NaN) in case of syntax and other usage errors */
  48. int xsize = 320;
  49. int ysize = 320;
  50. double xmin = 0.0;
  51. double xmax = 320.0;
  52. double ymin = 0.0;
  53. double ymax = 320.0;
  54. double tmax = 2;
  55. double tmin = -2;
  56. /* flag to indicate parsing of line status */
  57. int done = FALSE;
  58. int type; /* eg command number */
  59. int onclick = 0;/* 0 = noninteractive ; 1 = onclick ; 2 = draggable*/
  60. int use_affine = FALSE;
  61. int use_rotate = FALSE;
  62. int use_translate = FALSE;
  63. int use_filled = FALSE;
  64. int use_dashed = FALSE; /* dashing not natively supported in firefox  , for now... */
  65. char buffer[MAX_BUFFER];/* contains js-functions with arguments ... all other basic code is directly printed into js-include file */
  66.  
  67. /******************************************************************************
  68. ** Main Program
  69. ******************************************************************************/
  70. int main(int argc, char *argv[]){
  71.     /* need unique id for every call to canvasdraw : rand(); is too slow...will result in many identical id's */
  72.     struct timeval tv;struct timezone tz;gettimeofday(&tv, &tz);unsigned int canvas_root_id = (unsigned int) tv.tv_usec;
  73.     infile = stdin;/* read flyscript via stdin */
  74.     int i,c;
  75.     double double_data[MAX_INT+1];
  76.     int int_data[MAX_INT+1];
  77.     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
  78.     int use_parametric = FALSE;/* will be reset after parametric plotting */
  79.     int use_axis = FALSE;
  80.     int use_axis_numbering = FALSE;
  81.     int use_pan_and_zoom = FALSE;
  82.     int line_width = 1;
  83.     int decimals = 2;
  84.     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
  85.     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
  86.     int drag_type = -1;/* 0,1,2 : xy,x,y */
  87.     int use_tooltip = FALSE;
  88.     char *tooltip_text = "Click here";
  89.     char *temp = ""; /* */
  90.     char *bgcolor = "";/* used for background of canvas_div ; default is tranparent */
  91.     char *stroke_color = "255,0,0";
  92.     char *fill_color = "0,255,0";
  93.     char *font_family = "12px Ariel"; /* commands xaxistext,yaxistext,legend,text/textup/string/stringup may us this */
  94.     char *font_color = "#00000";
  95.     char *draw_type = "points";
  96.     char *fly_font = "normal";
  97.     char *input_style = "";
  98.     char *flytext = "";
  99.     char *affine_matrix = "[1,0,0,1,0,0]";
  100.     int pixelsize = 1;
  101.     int reply_format = 0;
  102.     int input_cnt = 0;
  103.     int ext_img_cnt = 0;
  104.     int font_size = 12;
  105.     int dashtype[2] = { 2 , 2 };
  106.     int js_function[MAX_JS_FUNCTIONS]; /* javascript functions include objects on demand basis : only once per object type */
  107.     for(i=0;i<MAX_JS_FUNCTIONS;i++){js_function[i]=0;}
  108.     int arrow_head = 8; /* size in px*/
  109.     int crosshair_size = 5; /* size in px*/
  110.     int plot_steps = 250;
  111.     int found_size_command = 0;
  112.     int click_cnt = 1;
  113.     int clock_cnt = 0; /* counts the amount of clocks used -> unique object clock%d */
  114.     int linegraph_cnt = 0; /* identifier for command 'linegraph' ; multiple line graphs may be plotted in a single plot*/
  115.     double angle = 0.0;
  116.     int translate_x = 0;
  117.     int translate_y = 0;
  118.     int clickfillmarge = 20;
  119.     int animation_type = 9; /* == object type curve in drag library */
  120.     int use_input_xy = 0; /* 1= input fields 2= textarea 3=calc y value*/
  121.     size_t string_length = 0;
  122.     double stroke_opacity = 0.8;
  123.     double fill_opacity = 0.8;
  124.     char *URL = "http://localhost/images";
  125.     memset(buffer,'\0',MAX_BUFFER);
  126.     void *tmp_buffer = "";
  127.  
  128.     /* default writing a unzipped js-include file into wims getfile directory */
  129.     char *w_wims_session = getenv("w_wims_session");
  130.     if(  w_wims_session == NULL || *w_wims_session == 0 ){
  131.         canvas_error("Hmmm, your wims environment does not exist...\nCanvasdraw should be used within wims.");
  132.     }
  133.     int L0=strlen(w_wims_session) + 21;
  134.     char *getfile_dir = my_newmem(L0); /* create memory to fit string precisely */
  135.     snprintf(getfile_dir,L0, "../sessions/%s/getfile",w_wims_session);/* string will fit precisely  */
  136.     mode_t process_mask = umask(0); /* check if file exists */
  137.     int result = mkdir(getfile_dir, S_IRWXU | S_IRWXG | S_IRWXO);
  138.     if( result == 0 || errno == EEXIST ){
  139.      umask(process_mask); /* be sure to set correct permission */
  140.      char *w_session = getenv("w_session");
  141.      int L1 = (int) (strlen(w_session)) + find_number_of_digits(canvas_root_id) + 48;
  142.     char *getfile_cmd = my_newmem(L1); /* create memory to fit string precisely */
  143.      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 */
  144.     /* write the include tag to html page:<script type="text/javascript" src="wims.cgi?session=%s&cmd=getfile&special_parm=11223344_js"></script> */
  145.     /* now write file into getfile dir*/
  146.     char *w_wims_home = getenv("w_wims_home"); /* "/home/users/wims" : we need absolute path for location */
  147.     int L2 = (int) (strlen(w_wims_home)) + (int) (strlen(w_wims_session)) + find_number_of_digits(canvas_root_id) + 23;
  148.     char *location = my_newmem(L2); /* create memory to fit string precisely */
  149.     snprintf(location,L2,"%s/sessions/%s/getfile/%d.js",w_wims_home,w_wims_session,canvas_root_id);/*absolute path */
  150.     js_include_file = fopen(location,"w");/* open the file location for writing */
  151.     /* check on opening...if nogood : mount readonly? disk full? permissions not set correctly? */
  152.     if(js_include_file == NULL){ canvas_error("SHOULD NOT HAPPEN : could not write to javascript include file...check your system logfiles !" );}
  153.  
  154. /* ----------------------------------------------------- */
  155. /* while more lines to process */
  156.  
  157.     while(!finished){
  158.         if(line_number>1 && found_size_command == FALSE){canvas_error("command \"size xsize,ysize\" needs to come first ! ");}
  159.         type = get_token(infile);
  160.         done = FALSE;
  161.         /*
  162.         @canvasdraw
  163.         @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...)
  164.         @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>
  165.         */
  166.         switch(type){
  167.         case END:
  168.         finished = 1;
  169.         done = TRUE;
  170.         break;
  171.         case 0:
  172.             sync_input(infile);
  173.             break;
  174.         case COMMENT:
  175.             sync_input(infile);
  176.             break;
  177.         case EMPTY:
  178.             sync_input(infile);
  179.             break;
  180.         case SIZE:
  181.             /*
  182.             @size width,height
  183.             @set canvas size in pixels
  184.             @mandatory first command
  185.             @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)
  186.             */
  187.             found_size_command = TRUE;
  188.             xsize = (int)(abs(round(get_real(infile,0)))); /* just to be sure that sizes > 0 */
  189.             ysize = (int)(abs(round(get_real(infile,1))));
  190.             /* sometimes we want xrange / yrange to be in pixels...without telling x/y-range */
  191.             xmin = 0;xmax = xsize;
  192.             ymin = 0;ymax = ysize;
  193.  
  194. /*
  195.  The sequence in which stuff is finally printed is important !!
  196.  for example, when writing a 'include.js" the may not be a "script tag <script>" etc etc
  197. */
  198. 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);
  199. fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n");
  200. fprintf(stdout,"<!-- include actual object code via include file -->\n<script type=\"text/javascript\" src=\"%s\"></script>\n",getfile_cmd);
  201. fprintf(js_include_file,"var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
  202. var xsize = %d;\
  203. var ysize = %d;\
  204. var precision = 100;\
  205. var canvas_div = document.getElementById(\"canvas_div%d\");\
  206. 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;};\
  207. 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;};\
  208. 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);};};\
  209. 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);};};\
  210. 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);};};\
  211. 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);};};\
  212. function scale_x_radius(rx){return parseInt(x2px(rx) - x2px(0));};\
  213. function scale_y_radius(ry){return parseInt(y2px(ry) - y2px(0));};\
  214. function distance(x1,y1,x2,y2){return parseInt(Math.sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) ));};\
  215. 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) ));};\
  216. 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;};\
  217. var xlogbase = 10;\
  218. var ylogbase = 10;\
  219. var use_xlogscale = 0;\
  220. var use_ylogscale = 0;\
  221. var x_strings = null;\
  222. var y_strings = null;\
  223. var use_pan_and_zoom = 0;\
  224. var x_use_snap_to_grid = 0;\
  225. var y_use_snap_to_grid = 0;\
  226. var xstart = 0;\
  227. var ystart = 0",canvas_root_id,xsize,ysize,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  228. /* default add the drag code : nearly always used ...*/
  229. add_drag_code(js_include_file,DRAG_CANVAS,canvas_root_id);
  230.             break;
  231.         case XRANGE:
  232.         /*
  233.         @ xrange xmin,xmax
  234.         @ if not given: 0,xsize (eg in pixels)
  235.         */
  236.             for(i = 0 ; i<2; i++){
  237.                 switch(i){
  238.                     case 0: xmin = get_real(infile,0);break;
  239.                     case 1: xmax = get_real(infile,1);break;
  240.                     default: break;
  241.                 }
  242.             }
  243.             if(xmin >= xmax){canvas_error(" xrange is not OK : xmin &lt; xmax !\n");}
  244.             fprintf(js_include_file,"var xmin = %f;var xmax = %f;",xmin,xmax);
  245.             break;
  246.         case YRANGE:
  247.         /*
  248.         @ yrange ymin,ymax
  249.         @ if not given 0,ysize (eg in pixels)
  250.         */
  251.             for(i = 0 ; i<2; i++){
  252.                 switch(i){
  253.                     case 0: ymin = get_real(infile,0);break;
  254.                     case 1: ymax = get_real(infile,1);break;
  255.                     default: break;
  256.                 }
  257.             }
  258.             if(ymin >= ymax){canvas_error(" yrange is not OK : ymin &lt; ymax !\n");}
  259.             fprintf(js_include_file,"var ymin = %f;var ymax = %f;",ymin,ymax);
  260.             break;
  261.         case TRANGE:
  262.         /*
  263.         @ trange tmin,tmax
  264.         @ default -2,2
  265.         */
  266.             use_parametric = TRUE;
  267.             for(i = 0 ; i<2; i++){
  268.                 switch(i){
  269.                     case 0: tmin = get_real(infile,0);break;
  270.                     case 1: tmax = get_real(infile,1);break;
  271.                     default: break;
  272.                 }
  273.             }
  274.             if(tmin >= tmax ){canvas_error(" trange is not OK : tmin &lt; tmax!\n");}
  275.             break;
  276.         case LINEWIDTH:
  277.         /*
  278.         @ linewidth int
  279.         @ default 1
  280.         */
  281.             line_width = (int) (get_real(infile,1));
  282.             break;
  283.         case ARROWHEAD:
  284.         /*
  285.         @ arrowhead int
  286.         @ default 8 (pixels)
  287.         */
  288.             arrow_head = (int) (get_real(infile,1));
  289.             break;
  290.         case CROSSHAIRSIZE:
  291.         /*
  292.         @ crosshairsize int
  293.         @ default 10 (px)
  294.         */
  295.             crosshair_size = (int) (get_real(infile,1));
  296.             break;
  297.         case CROSSHAIR:
  298.         /*
  299.         @ crosshair x,y,color
  300.         @ draw a single crosshair point at (x;y) in color 'color'
  301.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  302.         @ may be set draggable / onclick
  303.         */
  304.             for(i=0;i<3;i++){
  305.                 switch(i){
  306.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  307.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  308.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  309.                         decimals = find_number_of_digits(precision);
  310.                         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);
  311.                         click_cnt++;reset();
  312.                         break;
  313.                     default:break;
  314.                 }
  315.             }
  316.             break;
  317.         case CROSSHAIRS:
  318.         /*
  319.         @ crosshairs color,x1,y1,x2,y2,...,x_n,y_n
  320.         @ draw multiple crosshair points at given coordinates in color 'color'
  321.         @ use command 'crosshairsize int' and / or 'linewidth int'  to adust
  322.         @ may be set draggable / onclick individually (!)
  323.         */
  324.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  325.             fill_color = stroke_color;
  326.             i=0;
  327.             while( ! done ){     /* get next item until EOL*/
  328.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  329.                 if(i%2 == 0 ){
  330.                     double_data[i] = get_real(infile,0); /* x */
  331.                 }
  332.                 else
  333.                 {
  334.                     double_data[i] = get_real(infile,1); /* y */
  335.                 }
  336.                 i++;
  337.             }
  338.             decimals = find_number_of_digits(precision);
  339.             for(c=0 ; c < i-1 ; c = c+2){
  340.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,7,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s));\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);
  341.                 click_cnt++;
  342.             }
  343.             reset();
  344.             break;
  345.         case POINT:
  346.         /*
  347.         @ point x,y,color
  348.         @ draw a single point at (x;y) in color 'color'
  349.         @ use command 'linewidth int'  to adust size
  350.         @ may be set draggable / onclick
  351.         @ will not resize on zooming <br />(command 'circle x,y,r,color' will resize on zooming)
  352.         */
  353.             for(i=0;i<3;i++){
  354.                 switch(i){
  355.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  356.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  357.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  358.                     decimals = find_number_of_digits(precision);
  359.                     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);
  360.                     click_cnt++;break;
  361.                     default: break;
  362.                 }
  363.             }
  364.             reset();
  365.             break;
  366.         case POINTS:
  367.         /*
  368.         @ points color,x1,y1,x2,y2,...,x_n,y_n
  369.         @ draw multiple points at given coordinates in color 'color'
  370.         @ use command 'linewidth int'  to adust size
  371.         @ may be set draggable / onclick individually (!)
  372.         */
  373.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  374.             fill_color = stroke_color;
  375.             i=0;
  376.             while( ! done ){     /* get next item until EOL*/
  377.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  378.                 if(i%2 == 0 ){
  379.                     double_data[i] = get_real(infile,0); /* x */
  380.                 }
  381.                 else
  382.                 {
  383.                     double_data[i] = get_real(infile,1); /* y */
  384.                 }
  385.                 i++;
  386.             }
  387.             decimals = find_number_of_digits(precision);
  388.             for(c = 0 ; c < i-1 ; c = c+2){
  389.                 fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,2,[%.*f],[%.*f],[%d],[%d],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s));\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);
  390.                 click_cnt++;
  391.             }
  392.             reset();
  393.             break;
  394.         case SEGMENT:
  395.         /*
  396.         @ segment x1,y1,x2,y2,color
  397.         @ draw a line segment between points (x1:y1)--(x2:y2) in color 'color'
  398.         @ may be set draggable / onclick
  399.         */
  400.             for(i=0;i<5;i++) {
  401.                 switch(i){
  402.                     case 0: double_data[0]= get_real(infile,0);break; /* x1-values */
  403.                     case 1: double_data[1]= get_real(infile,0);break; /* y1-values */
  404.                     case 2: double_data[2]= get_real(infile,0);break; /* x2-values */
  405.                     case 3: double_data[3]= get_real(infile,0);break; /* y2-values */
  406.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  407.                         decimals = find_number_of_digits(precision);
  408.                         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);
  409.                         click_cnt++;reset();
  410.                         break;
  411.                     default: break;
  412.                 }
  413.             }
  414.             break;
  415.         case LINE:
  416.         /*
  417.         @ line x1,y1,x2,y2,color
  418.         @ draw a line through points (x1:y1)--(x2:y2) in color 'color'
  419.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  420.         @ may be set draggable / onclick
  421.         */
  422.             for(i=0;i<5;i++){
  423.                 switch(i){
  424.                     case 0: double_data[10]= get_real(infile,0);break; /* x-values */
  425.                     case 1: double_data[11]= get_real(infile,0);break; /* y-values */
  426.                     case 2: double_data[12]= get_real(infile,0);break; /* x-values */
  427.                     case 3: double_data[13]= get_real(infile,0);break; /* y-values */
  428.                     case 4: stroke_color=get_color(infile,1);/* name or hex color */
  429.                     if( double_data[10] == double_data[12] ){ /* vertical line*/
  430.                         double_data[1] = xmin;
  431.                         double_data[3] = ymax;
  432.                         double_data[0] = double_data[10];
  433.                         double_data[2] = double_data[10];
  434.                     }
  435.                     else
  436.                     {
  437.                         if( double_data[11] == double_data[13] ){ /* horizontal line */
  438.                             double_data[1] = double_data[11];
  439.                             double_data[3] = double_data[11];
  440.                             double_data[0] = ymin;
  441.                             double_data[2] = xmax;
  442.                         }
  443.                         else
  444.                         {
  445.                         /* m */
  446.                         double_data[5] = (double_data[13] - double_data[11]) /(double_data[12] - double_data[10]);
  447.                         /* q */
  448.                         double_data[6] = double_data[11] - ((double_data[13] - double_data[11]) /(double_data[12] - double_data[10]))*double_data[10];
  449.  
  450.                         /*xmin,m*xmin+q,xmax,m*xmax+q*/
  451.  
  452.                             double_data[1] = (double_data[5])*(xmin)+(double_data[6]);
  453.                             double_data[3] = (double_data[5])*(xmax)+(double_data[6]);
  454.                             double_data[0] = xmin;
  455.                             double_data[2] = xmax;
  456.                         }
  457.                     }
  458.                     decimals = find_number_of_digits(precision);
  459.                     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);
  460.                     click_cnt++;reset();
  461.                     break;
  462.                 }
  463.             }
  464.             break;
  465.         case HLINE:
  466.         /*
  467.         @ hline x,y,color
  468.         @ draw a horizontal line through point (x:y) in color 'color'
  469.         @ or use command 'curve color,formula' to draw the line <br />(uses more points to draw the line; is however better draggable)
  470.         @ may be set draggable / onclick
  471.         */
  472.             for(i=0;i<3;i++) {
  473.                 switch(i){
  474.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  475.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  476.                     case 2: stroke_color = get_color(infile,1);/* name or hex color */
  477.                     double_data[3] = double_data[1];
  478.                     decimals = find_number_of_digits(precision);
  479.                     fprintf(js_include_file,"dragstuff.addShape(new Shape(%d,%d,%d,4,[%.*f,%.*f],[%.*f,%.*f],[30,30],[30,30],%d,\"%s\",%.2f,\"%s\",%.2f,%d,%d,%d,%d,%d,%.1f,\"%s\",%d,\"%s\",%d,%s));\n",click_cnt,onclick,drag_type,decimals,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);
  480.                     click_cnt++;reset();
  481.                     break;
  482.                 }
  483.             }
  484.             break;
  485.         case VLINE:
  486.         /*
  487.         @ vline x,y,color
  488.         @ draw a vertical line through point (x:y) in color 'color'
  489.         @ may be set draggable / onclick
  490.         */
  491.             for(i=0;i<3;i++) {
  492.                 switch(i){
  493.                     case 0: double_data[0] = get_real(infile,0);break; /* x-values */
  494.                     case 1: double_data[1] = get_real(infile,0);break; /* y-values */
  495.                     case 2: stroke_color=get_color(infile,1);/* name or hex color */
  496.                         double_data[2] = double_data[0];
  497.                         decimals = find_number_of_digits(precision);
  498.                         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);
  499.                         click_cnt++;reset();
  500.                     break;
  501.                 }
  502.             }
  503.             break;
  504.         case SQUARE:
  505.         /*
  506.         @ square x,y,side,color
  507.         @ draw a square with left top corner (x:y) with side 'side' in color 'color'
  508.         @ use command 'fsquare x,y,side,color' for a filled square
  509.         @ use command/keyword  'filled' before command 'square x,y,side,color'
  510.         @ use command 'fillcolor color' before 'fsquare' to set the fill colour.
  511.         @ may be set draggable / onclick
  512.         */
  513.             for(i=0;i<5;i++){
  514.                 switch(i){
  515.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  516.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  517.                     case 2:double_data[2] = get_real(infile,0);
  518.                            double_data[3] = double_data[2];
  519.                            break; /* x-values */
  520.                     case 3:stroke_color = get_color(infile,1);/* name or hex color */
  521.                         decimals = find_number_of_digits(precision);
  522.                         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);
  523.                         click_cnt++;reset();
  524.                         break;
  525.                 }
  526.             }
  527.             break;
  528.         case ROUNDRECT:
  529.         /*
  530.         @ roundrect x1,y1,x2,y2,radius,color
  531.         @ use command 'froundrect x1,y1,x2,y2,radius,color' for a filled rectangle
  532.         @ use command/keyword  'filled' before command 'roundrect x1,y1,x2,y2,radius,color'
  533.         @ use command 'fillcolor color' before 'froundrect' to set the fill colour.
  534.         @ may be set draggable / onclick
  535.         */
  536.             for(i=0;i<6;i++){
  537.                 switch(i){
  538.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  539.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  540.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  541.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  542.                     case 4:int_data[0] = (int) (get_real(infile,0));break; /* radius value in pixels */
  543.                     case 5:stroke_color = get_color(infile,1);/* name or hex color */
  544.                         decimals = find_number_of_digits(precision);
  545.                         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);
  546.                         click_cnt++;reset();
  547.                     break;
  548.                 }
  549.             }
  550.             break;
  551.         case RECT:
  552.         /*
  553.         @ rect x1,y1,x2,y2,color
  554.         @ use command 'rect x1,y1,x2,y2,color' for a filled rectangle
  555.         @ use command/keyword  'filled' before command 'rect x1,y1,x2,y2,color'
  556.         @ use command 'fillcolor color' before 'frect' to set the fill colour.
  557.         @ may be set draggable / onclick
  558.         */
  559.             for(i=0;i<5;i++){
  560.                 switch(i){
  561.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  562.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  563.                     case 2:double_data[2] = get_real(infile,0);break; /* x-values */
  564.                     case 3:double_data[3] = get_real(infile,0);break; /* y-values */
  565.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  566.                         decimals = find_number_of_digits(precision);
  567.                         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);
  568.                         click_cnt++;reset();
  569.                         break;
  570.                 }
  571.             }
  572.             break;
  573.         case POLYLINE:
  574.         /*
  575.         @ polyline color,x1,y1,x2,y2...x_n,y_n
  576.         @ may be set draggable / onclick
  577.         */
  578.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  579.             i=0;
  580.             c=0;
  581.             while( ! done ){     /* get next item until EOL*/
  582.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  583.                 for( c = 0 ; c < 2; c++){
  584.                     if(c == 0 ){
  585.                         double_data[i] = get_real(infile,0);
  586.                         i++;
  587.                     }
  588.                     else
  589.                     {
  590.                         double_data[i] = get_real(infile,1);
  591.                         i++;
  592.                     }
  593.                 }
  594.             }
  595.             /* draw path : not closed & not filled */
  596.             decimals = find_number_of_digits(precision);
  597.             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);
  598.             click_cnt++;reset();
  599.             break;
  600.         case POLY:
  601.         /*
  602.         @ poly color,x1,y1,x2,y2...x_n,y_n
  603.         @ draw closed polygon
  604.         @ use command 'fpoly' to fill it, use command 'fillcolor color' to set the fill color
  605.         @ may be set draggable / onclick
  606.         */
  607.             stroke_color=get_color(infile,0); /* how nice: now the color comes first...*/
  608.             i=0;
  609.             c=0;
  610.             while( ! done ){     /* get next item until EOL*/
  611.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  612.                 for( c = 0 ; c < 2; c++){
  613.                     if(c == 0 ){
  614.                         double_data[i] = get_real(infile,0);
  615.                         i++;
  616.                     }
  617.                     else
  618.                     {
  619.                         double_data[i] = get_real(infile,1);
  620.                         i++;
  621.                     }
  622.                 }
  623.             }
  624.             /* draw path :  closed & optional filled */
  625.                 decimals = find_number_of_digits(precision);
  626.                 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);
  627.                 click_cnt++;reset();
  628.             break;
  629.         case ARC:
  630.         /*
  631.          @ arc xc,yc,width,height,start_angle,end_angle,color
  632.          @ can not be set "onclick" or "drag xy"
  633.          @ attention: width == height == radius in pixels)
  634.         */
  635.             for(i=0;i<7;i++){
  636.                 switch(i){
  637.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  638.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  639.                     case 2:int_data[0] = (int)(get_real(infile,0));break; /* width in pixels ! */
  640.                     case 3:int_data[1] = (int)(get_real(infile,0));break; /* height in pixels ! */
  641.                     case 4:double_data[2] = get_real(infile,0);break; /* start angle in degrees */
  642.                     case 5:double_data[3] = get_real(infile,0);break; /* end angle in degrees */
  643.                     case 6:stroke_color = get_color(infile,1);/* name or hex color */
  644.                     /* in Shape library:
  645.                         x[0] = x[1] = xc
  646.                         y[0] = y[1] = yc
  647.                         w[0] = w[1] = radius = width = height
  648.                         h[0] = start_angle ; h[1] = end_engle
  649.                     */
  650.                         decimals = find_number_of_digits(precision);
  651.                         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);
  652.                         reset();
  653.                     break;
  654.                 }
  655.             }
  656.             break;
  657.         case ELLIPSE:
  658.         /*
  659.         @ ellipse xc,yc,radius_x,radius_y,color
  660.         @ a ellipse with center xc/yc in x/y-range
  661.         @ radius_x and radius_y are in pixels
  662.         @ may be set draggable / onclick
  663.         @ will shrink / expand on zoom out / zoom in
  664.         */
  665.             for(i=0;i<5;i++){
  666.                 switch(i){
  667.                     case 0:double_data[0] = get_real(infile,0);break; /* x-values */
  668.                     case 1:double_data[1] = get_real(infile,0);break; /* y-values */
  669.                     case 2:double_data[2] = get_real(infile,0);break; /* rx -> px  */
  670.                     case 3:double_data[3] = get_real(infile,0);break; /* ry -> px  */
  671.                     case 4:stroke_color = get_color(infile,1);/* name or hex color */
  672.                         decimals = find_number_of_digits(precision);
  673.                         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);
  674.                         click_cnt++;reset();
  675.                     break;
  676.                 }
  677.             }
  678.             break;
  679.         case DASHTYPE:
  680.         /*
  681.         @ dashtype int ,int
  682.         @ When dashed is set, the objects will be drawn with this dashtyp
  683.         @ default value "dashtype 2,2"
  684.         */
  685.             for(i=0;i<2;i++){
  686.                 switch(i){
  687.                     case 0 : dashtype[0] = (int) line_width*( get_real(infile,0)) ; break;
  688.                     case 1 : dashtype[1] = (int) line_width*( get_real(infile,1)) ; break;
  689.                 }
  690.             }
  691.         break;
  692.         case CIRCLE:
  693.         /*
  694.         @ circle xc,yc,width (2*r in pixels),color
  695.         @ use command 'fcircle xc,yc,d,color' or command 'filled' for a filled disk
  696.         @ use command 'fillcolor color' to set the fillcolor
  697.         @ may be set draggable / onclick
  698.         @ will shrink / expand on zoom out / zoom in
  699.         */
  700.             for(i=0;i<4;i++){
  701.                 switch(i){
  702.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  703.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  704.                     case 2: double_data[2] = px2x((get_real(infile,0))/2) - px2x(0);break; /* radius in 'dx' xrange*/
  705.                     case 3: stroke_color = get_color(infile,1);/* name or hex color */
  706.                         decimals = find_number_of_digits(precision);
  707.                         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);
  708.                         click_cnt++;reset();
  709.                     break;
  710.                 }
  711.             }
  712.             break;
  713.         case RAYS:
  714.         /*
  715.          @ rays color,xc,yc,x1,y1,x2,y2,x3,y3...x_n,y_n
  716.          @ draw rays in color 'color' and center (xc:yc)
  717.          @ may be set draggable or onclick (every individual ray)
  718.         */
  719.             stroke_color=get_color(infile,0);
  720.             fill_color = stroke_color;
  721.             double_data[0] = get_real(infile,0);/* xc */
  722.             double_data[1] = get_real(infile,0);/* yc */
  723.             i=2;
  724.             while( ! done ){     /* get next item until EOL*/
  725.                 if(i > MAX_INT - 1){canvas_error("in command rays to many points / rays in argument: repeat command multiple times to fit");}
  726.                 if(i%2 == 0 ){
  727.                     double_data[i] = get_real(infile,0); /* x */
  728.                 }
  729.                 else
  730.                 {
  731.                     double_data[i] = get_real(infile,1); /* y */
  732.                 }
  733.             fprintf(js_include_file,"/* double_data[%d] = %f */\n",i,double_data[i]);
  734.                 i++;
  735.             }
  736.  
  737.             if( i%2 != 0 ){canvas_error("in command rays: unpaired x or y value");}
  738.             decimals = find_number_of_digits(precision);
  739.             for(c=2; c<i;c = c+2){
  740.                 click_cnt++;
  741.                 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);
  742.             }
  743.             reset();
  744.             break;
  745.         case ARROW:
  746.         /*
  747.         @ arrow x1,y1,x2,y2,h,color
  748.         @ draw a single headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and in color 'color'
  749.         @ use command 'linewidth int' to adjust thickness of the arrow
  750.         @ may be set draggable / onclick
  751.         */
  752.             for(i=0;i<6;i++){
  753.                 switch(i){
  754.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  755.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  756.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  757.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  758.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  759.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  760.                         decimals = find_number_of_digits(precision);
  761.                         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);
  762.                         click_cnt++;
  763.                         reset();
  764.                         break;
  765.                 }
  766.             }
  767.             break;
  768.         case ARROW2:
  769.         /*
  770.         @ arrow2 x1,y1,x2,y2,h,color
  771.         @ draw a double headed arrow/vector from (x1:y1) to (x2:y2)<br />with arrowhead size h in px and  in color 'color'
  772.         @ use command 'arrowhead int' to adjust the arrow head size
  773.         @ use command 'linewidth int' to adjust thickness of the arrow
  774.         @ may be set draggable / onclick
  775.         */
  776.             for(i=0;i<6;i++){
  777.                 switch(i){
  778.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  779.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  780.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  781.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  782.                     case 4: arrow_head = (int) get_real(infile,0);break;/* h */
  783.                     case 5: stroke_color = get_color(infile,1);/* name or hex color */
  784.                         decimals = find_number_of_digits(precision);
  785.                         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);
  786.                         click_cnt++;reset();
  787.                         break;
  788.                 }
  789.             }
  790.             break;
  791.         case PARALLEL:
  792.         /*
  793.          @ parallel x1,y1,x2,y2,dx,dy,n,[colorname or #hexcolor]
  794.          @ can not be set "onclick" or "drag xy"
  795.         */
  796.             for( i = 0;i < 8; i++ ){
  797.                 switch(i){
  798.                     case 0: double_data[0] = get_real(infile,0);break; /* x1-values  -> x-pixels*/
  799.                     case 1: double_data[1] = get_real(infile,0);break; /* y1-values  -> y-pixels*/
  800.                     case 2: double_data[2] = get_real(infile,0);break; /* x2-values  -> x-pixels*/
  801.                     case 3: double_data[3] = get_real(infile,0);break; /* y2-values  -> y-pixels*/
  802.                     case 4: double_data[4] = xmin + get_real(infile,0);break; /* xv -> x-pixels */
  803.                     case 5: double_data[5] = ymax + get_real(infile,0);break; /* yv -> y-pixels */
  804.                     case 6: int_data[0] = (int) (get_real(infile,0));break; /* n  */
  805.                     case 7: stroke_color=get_color(infile,1);/* name or hex color */
  806.                     decimals = find_number_of_digits(precision);
  807.                     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);
  808.                     click_cnt++;reset();
  809.                     break;
  810.                     default: break;
  811.                 }
  812.             }
  813.             break;
  814.         case TRIANGLE:
  815.         /*
  816.          @triangle x1,y1,x2,y2,x3,y3,color
  817.          @may be set draggable / onclic
  818.         */
  819.             for(i=0;i<7;i++){
  820.                 switch(i){
  821.                     case 0: double_data[0] = get_real(infile,0);break; /* x */
  822.                     case 1: double_data[1] = get_real(infile,0);break; /* y */
  823.                     case 2: double_data[2] = get_real(infile,0);break; /* x */
  824.                     case 3: double_data[3] = get_real(infile,0);break; /* y */
  825.                     case 4: double_data[4] = get_real(infile,0);break; /* x */
  826.                     case 5: double_data[5] = get_real(infile,0);break; /* y */
  827.                     case 6: stroke_color = get_color(infile,1);/* name or hex color */
  828.                         decimals = find_number_of_digits(precision);
  829.                         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);
  830.                         click_cnt++;reset();
  831.                         break;
  832.                     default: break;
  833.                 }
  834.             }
  835.             break;
  836.         case LATTICE:
  837.         /*
  838.          @lattice x0,y0,xv1,yv1,xv2,yv2,n1,n2,color
  839.          @can not be set "onclick" or "drag xy"
  840.         */
  841.             if( js_function[DRAW_LATTICE] != 1 ){ js_function[DRAW_LATTICE] = 1;}
  842.             for( i = 0; i<9; i++){
  843.                 switch(i){
  844.                     case 0: int_data[0] = x2px(get_real(infile,0));break; /* x0-values  -> x-pixels*/
  845.                     case 1: int_data[1] = y2px(get_real(infile,0));break; /* y0-values  -> y-pixels*/
  846.                     case 2: int_data[2] = (int) (get_real(infile,0));break; /* x1-values  -> x-pixels*/
  847.                     case 3: int_data[3] = (int) (get_real(infile,0));break; /* y1-values  -> y-pixels*/
  848.                     case 4: int_data[4] = (int) (get_real(infile,0));break; /* x2-values  -> x-pixels*/
  849.                     case 5: int_data[5] = (int) (get_real(infile,0));break; /* y2-values  -> y-pixels*/
  850.                     case 6: int_data[6] = (int) (get_real(infile,0));break; /* n1-values */
  851.                     case 7: int_data[7] = (int) (get_real(infile,0));break; /* n2-values */
  852.                     case 8: stroke_color=get_color(infile,1);
  853.                         decimals = find_number_of_digits(precision);
  854.                         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);
  855.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  856.                         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);
  857.                         add_to_buffer(tmp_buffer);
  858.                     break;
  859.                     default:break;
  860.                 }
  861.             }
  862.             reset();
  863.             break;
  864.         case SNAPTOGRID:
  865.         /*
  866.          @ snaptogrid
  867.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  868.          @ in case of userdraw the drawn points will snap to xmajor / ymajor grid
  869.          @ 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 />
  870.         */
  871.         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");
  872.         break;
  873.         case XSNAPTOGRID:
  874.         /*
  875.          @ xsnaptogrid
  876.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  877.          @ in case of userdraw the drawn points will snap to xmajor grid
  878.          @ if xminor / yminor is defined, the drawing will snap to xminor <br />use only even dividers in x-minor...for example<br />xsnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  879.         */
  880.         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");
  881.         break;
  882.         case YSNAPTOGRID:
  883.         /*
  884.          @ ysnaptogrid
  885.          @ keyword (no arguments rewquired) needs to be defined before command 'userdraw' and after command 'grid'
  886.          @ in case of userdraw the drawn points will snap to ymajor grid
  887.          @ if xminor / yminor is defined, the drawing will snap to yminor <br />use only even dividers in y-minor...for example<br />ysnaptogrid<br />axis<br />grid 2,1,grey,4,4,7,red<br /> will snap on x=0, x=0.5, x=1, x=1.5 ....<br /> will snap on y=0, y=0.25 y=0.5 y=0.75 ...<br />
  888.         */
  889.         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");
  890.         break;
  891.         case USERTEXTAREA_XY:
  892.         /*
  893.         @ usertextarea_xy
  894.         @ keyword
  895.         @ to be used in combination with command "userdraw object_type,color" wherein object_type is only segment / polyline for the time being...
  896.         @ if set two textareas are added to the document<br />(one for x-values , one for y-values)
  897.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  898.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  899.         @ user drawings will not zoom on zooming (or pan on panning)
  900.         */
  901.             if(use_tooltip == TRUE){canvas_error("usertextarea_xy can not be combined with intooltip command");}
  902.             if( use_input_xy == 1 ){canvas_error("usertextarea_xy can not be combined with userinput_xy command");}
  903.             fprintf(js_include_file,"function safe_eval(exp){if(exp.indexOf('^') != -1){exp = exp.replace(/\\s*(.*)\\^\\s*(.*)/ig, \"pow($1, $2)\");};var reg = /(?:[a-z$_][a-z0-9$_]*)|(?:[;={}\\[\\]\"'!&<>^\\\\?:])/ig;var valid = true;exp = exp.replace(reg,function($0){if (Math.hasOwnProperty($0)){return \"Math.\"+$0;}else{valid = false;};});if (!valid){alert(\"hmmm \"+exp+\" ?\"); exp = null;}else{try { exp = eval(exp); } catch (e) {alert(\"Invalid arithmetic expression\"); exp = null;};};return exp;};");
  904.             use_input_xy = 2;
  905.             break;
  906.         case USERINPUT_XY:
  907.         /*
  908.         @ userinput_xy
  909.         @ keyword
  910.         @ to be used in combination with command "userdraw object_type,color"
  911.         @ 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)
  912.         @ the student may use this as correction for (x:y) on a drawing (or to draw without mouse, using just the coordinates)
  913.         @ 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.
  914.         @ can not be combined with command "intooltip tiptext" <br />note: the 'tooltip div element' is used for placing inputfields
  915.         @ user drawings will not zoom on zooming (or pan on panning)
  916.         */
  917.             if(use_tooltip == TRUE){canvas_error("userinput_xy can not be combined with intooltip command");}
  918.             /* add simple eval check to avoid code injection with unprotected eval(string) */
  919.             fprintf(js_include_file,"function safe_eval(exp){if(exp.indexOf('^') != -1){exp = exp.replace(/\\s*(.*)\\^\\s*(.*)/ig, \"pow($1, $2)\");};var reg = /(?:[a-z$_][a-z0-9$_]*)|(?:[;={}\\[\\]\"'!&<>^\\\\?:])/ig;var valid = true;exp = exp.replace(reg,function($0){if (Math.hasOwnProperty($0)){return \"Math.\"+$0;}else{valid = false;};});if (!valid){alert(\"hmmm \"+exp+\" ?\"); exp = null;}else{try { exp = eval(exp); } catch (e) {alert(\"Invalid arithmetic expression\"); exp = null;};};return exp;};");
  920.             use_input_xy = 1;
  921.             break;
  922.         case USERDRAW:
  923.         /*
  924.         @ userdraw object_type,color
  925.         @ implemented object_type: <ul><li>point</li><li>points</li><li>crosshair</li><li>crosshairs</li><li>line</li><li>lines</li><li>segment</li><li>segments</li><li>polyline</li><li>circle</li><li>circles</li><li>arrow</li><li>arrows</li><li>triangle</li><li>polygon</li><li>poly[3-9]</li><li>rect</li><li>roundrect</li><li>rects</li><li>roundrects</li><li>freehandline</li><li>freehandlines</li><li>path</li><li>paths</li><li>text</li></ul>
  926.         @ note: mouselisteners are only active if "$status != done " (eg only drawing in an active/non-finished exercise) <br /> to overrule use command/keyword "status" (no arguments required)
  927.         @ 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
  928.         @ note: object_type polygone: Will be finished (the object is closed) when clicked on the first point of the polygone again.
  929.         @ 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)
  930.         @ use command "filled", "opacity int,int"  and "fillcolor color" to trigger coloured filling of fillable objects
  931.         @ use command "dashed" and/or "dashtype int,int" to trigger dashing
  932.         @ use command "replyformat int" to control / adjust output formatting of javascript function read_canvas();
  933.         @ may be combined with onclick or drag xy  of other components of flyscript objects (although not very usefull...)
  934.         @ may be combined with keyword 'userinput_xy' or
  935.         @ 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.!
  936.         */
  937.             if( use_userdraw == TRUE ){ /* only one object type may be drawn*/
  938.                 canvas_error("Only one userdraw primitive may be used: read documentation !!");
  939.             }
  940.             use_userdraw = TRUE;
  941.             fprintf(js_include_file,"<!-- begin userdraw mouse events -->\nvar userdraw_x = new Array();var userdraw_y = new Array();var userdraw_radius = new Array();var xy_cnt=0;var canvas_userdraw = create_canvas%d(%d,xsize,ysize);var context_userdraw = canvas_userdraw.getContext(\"2d\");var use_dashed = %d;if(use_dashed == 1){if( context_userdraw.setLineDash ){context_userdraw.setLineDash([%d,%d]);}else{if(context_userdraw.mozDash){context_userdraw.mozDash = [%d,%d];};};};if(wims_status != \"done\"){canvas_div.addEventListener(\"mousedown\",user_draw,false);canvas_div.addEventListener(\"mousemove\",user_drag,false);canvas_div.addEventListener(\"touchstart\",user_draw,false);canvas_div.addEventListener(\"touchmove\",user_drag,false);}\n<!-- end userdraw mouse events -->",canvas_root_id,DRAW_CANVAS,use_dashed,dashtype[0],dashtype[1],dashtype[0],dashtype[1]);
  942.             draw_type = get_string_argument(infile,0);
  943.             stroke_color = get_color(infile,1);
  944.             if( strcmp(draw_type,"point") == 0 ){
  945.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  946.                 if(reply_format < 1 ){reply_format = 8;}
  947.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  948.                 if(use_input_xy == 1){
  949.                     add_input_circle(js_include_file,1,1);
  950.                     add_input_xy(js_include_file,canvas_root_id);
  951.                 }
  952.                 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);
  953.             }
  954.             else
  955.             if( strcmp(draw_type,"points") == 0 ){
  956.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  957.                 if(reply_format < 1 ){reply_format = 8;}
  958.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  959.                 if(use_input_xy == 1){
  960.                     add_input_circle(js_include_file,1,2);
  961.                     add_input_xy(js_include_file,canvas_root_id);
  962.                 }
  963.                 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);
  964.             }
  965.             else
  966.             if( strcmp(draw_type,"segment") == 0 ){
  967.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  968.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  969.                 if(reply_format < 1){reply_format = 11;}
  970.                 if(use_input_xy == 1){
  971.                     add_input_segment(js_include_file,1);
  972.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  973.                 }
  974.                 add_js_segments(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  975.             }
  976.             else
  977.             if( strcmp(draw_type,"polyline") == 0 ){
  978.                 if( js_function[DRAW_POLYLINE] != 1 ){ js_function[DRAW_POLYLINE] = 1;}
  979.                 if(reply_format < 1){reply_format = 23;}
  980.                 if( use_input_xy == 1 ){
  981.                     add_input_polyline(js_include_file);
  982.                     add_input_xy(js_include_file,canvas_root_id);
  983.                 }
  984.                 add_js_polyline(js_include_file,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  985.             }
  986.             else
  987.             if( strcmp(draw_type,"segments") == 0 ){
  988.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  989.                 if( js_function[DRAW_SEGMENTS] != 1 ){ js_function[DRAW_SEGMENTS] = 1;}
  990.                 if(reply_format < 1){reply_format = 11;}
  991.                 if(use_input_xy == 1){
  992.                     add_input_segment(js_include_file,2);
  993.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  994.                 }
  995.                 add_js_segments(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  996.             }
  997.             else
  998.             if( strcmp(draw_type,"circle") == 0 ){
  999.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1000.                 if(reply_format < 1){reply_format = 10;}
  1001.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1002.                 if(use_input_xy == 1){
  1003.                     add_input_circle(js_include_file,2,1);
  1004.                     add_input_xyr(js_include_file,canvas_root_id);
  1005.                 }
  1006.                 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]);
  1007.             }
  1008.             else
  1009.             if( strcmp(draw_type,"circles") == 0 ){
  1010.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1011.                 if(reply_format < 1){reply_format = 10;}
  1012.                 /* 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n in x/y-range */
  1013.                 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]);
  1014.                 if(use_input_xy == 1){
  1015.                     add_input_circle(js_include_file,2,2);
  1016.                     add_input_xyr(js_include_file,canvas_root_id);
  1017.                 }
  1018.             }
  1019.             else
  1020.             if(strcmp(draw_type,"crosshair") == 0 ){
  1021.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1022.                 if(reply_format < 1){reply_format = 8;}
  1023.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1024.                 add_js_crosshairs(js_include_file,1,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1025.                 if(use_input_xy == 1){
  1026.                     add_input_crosshair(js_include_file,1);
  1027.                     add_input_xy(js_include_file,canvas_root_id);
  1028.                 }
  1029.             }
  1030.             else
  1031.             if(strcmp(draw_type,"crosshairs") == 0 ){
  1032.                 if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1033.                 if(reply_format < 1){reply_format = 8;}
  1034.                 /* 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n in x/y-range */
  1035.                 add_js_crosshairs(js_include_file,2,draw_type,line_width,crosshair_size ,stroke_color,stroke_opacity);
  1036.                 if(use_input_xy == 1){
  1037.                     add_input_crosshair(js_include_file,2);
  1038.                     add_input_xy(js_include_file,canvas_root_id);
  1039.                 }
  1040.             }
  1041.             else
  1042.             if(strcmp(draw_type,"freehandline") == 0 ){
  1043.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1044.                 if(reply_format < 1){reply_format = 6;}
  1045.                 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]);
  1046.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1047.             }
  1048.             else
  1049.             if(strcmp(draw_type,"freehandlines") == 0 ){
  1050.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1051.                 if(reply_format < 1){reply_format = 6;}
  1052.                 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]);
  1053.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1054.             }
  1055.             else
  1056.             if(strcmp(draw_type,"path") == 0 ){
  1057.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1058.                 if(reply_format < 1){reply_format = 6;}
  1059.                 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]);
  1060.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1061.             }
  1062.             else
  1063.             if(strcmp(draw_type,"paths") == 0 ){
  1064.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1065.                 if(reply_format < 1){reply_format = 6;}
  1066.                 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]);
  1067.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1068.             }
  1069.             else
  1070.             if(strcmp(draw_type,"arrows") == 0 ){
  1071.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1072.                 if(reply_format < 1){reply_format = 11;}
  1073.                 add_js_arrows(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1074.                 if(use_input_xy == 1){
  1075.                     add_input_arrow(js_include_file,2);
  1076.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1077.                 }
  1078.             }
  1079.             else
  1080.             if(strcmp(draw_type,"arrow") == 0 ){
  1081.                 if( js_function[DRAW_ARROWS] != 1 ){ js_function[DRAW_ARROWS] = 1;}
  1082.                 if(reply_format < 1){reply_format = 11;}
  1083.                 add_js_arrows(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1],arrow_head);
  1084.                 if(use_input_xy == 1){
  1085.                     add_input_arrow(js_include_file,1);
  1086.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1087.                 }
  1088.             }
  1089.             else
  1090.             if(strcmp(draw_type,"polygon") == 0){
  1091.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1092.                 if(reply_format < 1){reply_format = 2;}
  1093.                 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]);
  1094.                 if( use_input_xy == 2 ){
  1095.                   add_textarea_polygon(js_include_file);
  1096.                   add_textarea_xy(js_include_file,canvas_root_id);
  1097.                 }
  1098.             }
  1099.             else
  1100.             if(strncmp(draw_type,"poly",4) == 0){
  1101.                 if(strlen(draw_type) < 5){canvas_error("use command \"userdraw poly[3-9],color\" eg userdraw poly6,blue");}
  1102.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1103.                 if(reply_format < 1){reply_format = 2;}
  1104.                 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]);
  1105.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1106.             }
  1107.             else
  1108.             if(strcmp(draw_type,"triangle") == 0){
  1109.                 if( js_function[DRAW_PATHS] != 1 ){ js_function[DRAW_PATHS] = 1;}
  1110.                 if(reply_format < 1){reply_format = 2;}
  1111.                 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]);
  1112.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1113.             }
  1114.             else
  1115.             if( strcmp(draw_type,"line") == 0 ){
  1116.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1117.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1118.                 if(reply_format < 1){reply_format = 11;}
  1119.                 add_js_lines(js_include_file,1,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1120.                 if( use_input_xy == 1 ){
  1121.                     add_input_line(js_include_file,1);
  1122.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1123.                 }
  1124.             }
  1125.             else
  1126.             if( strcmp(draw_type,"lines") == 0 ){
  1127.                 if( js_function[DRAW_CIRCLES] != 1 ){ js_function[DRAW_CIRCLES] = 1;}
  1128.                 if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1129.                 if(reply_format < 1){reply_format = 11;}
  1130.                 add_js_lines(js_include_file,2,draw_type,line_width,stroke_color,stroke_opacity,use_dashed,dashtype[0],dashtype[1]);
  1131.                 if( use_input_xy == 1 ){
  1132.                     add_input_line(js_include_file,2);
  1133.                     add_input_x1y1x2y2(js_include_file,canvas_root_id);
  1134.                 }
  1135.             }
  1136.             else
  1137.             if( strcmp(draw_type,"rects") == 0){
  1138.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1139.                 if(reply_format < 1){reply_format = 2;}
  1140.                 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]);
  1141.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1142.             }
  1143.             else
  1144.             if( strcmp(draw_type,"roundrects") == 0){
  1145.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1146.                 if(reply_format < 1){reply_format = 2;}
  1147.                 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]);
  1148.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1149.             }
  1150.             else
  1151.             if( strcmp(draw_type,"rect") == 0){
  1152.                 if( js_function[DRAW_RECTS] != 1 ){ js_function[DRAW_RECTS] = 1;}
  1153.                 if(reply_format < 1){reply_format = 2;}
  1154.                 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]);
  1155.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1156.             }
  1157.             else
  1158.             if( strcmp(draw_type,"roundrect") == 0){
  1159.                 if( js_function[DRAW_ROUNDRECTS] != 1 ){ js_function[DRAW_ROUNDRECTS] = 1;}
  1160.                 if(reply_format < 1){reply_format = 2;}
  1161.                 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]);
  1162.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1163.             }
  1164.             else
  1165.             if( strcmp(draw_type,"text") == 0){
  1166.                 if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1167.                 if(reply_format < 1){reply_format = 17;}
  1168.                 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);
  1169.                 if(use_input_xy == 1){ canvas_error("userinput_xy not yet implemented for this userdraw type !");}
  1170.             }
  1171.             else
  1172.             {
  1173.                 canvas_error("unknown drawtype or typo? ");
  1174.             }
  1175.             reset();
  1176.         break;
  1177.         case PLOTSTEPS:
  1178.             /*
  1179.              @ plotsteps a_number
  1180.              @ default 150
  1181.              @ use with care !
  1182.             */
  1183.             plot_steps = (int) (get_real(infile,1));
  1184.             break;
  1185.         case FONTSIZE:
  1186.         /*
  1187.          @fontsize font_size
  1188.          @default value 12
  1189.         */
  1190.             font_size = (int) (get_real(infile,1));
  1191.             break;
  1192.         case FONTCOLOR:
  1193.         /*
  1194.          @fontcolor color
  1195.          @color: hexcolor or colorname
  1196.          @default: black
  1197.          @example usage: x/y-axis text
  1198.         */
  1199.             font_color = get_color(infile,1);
  1200.             break;
  1201.         case ANIMATE:
  1202.         /*
  1203.          @animate type
  1204.          @type may be "point" (nothing else , yet...)
  1205.          @the point is a filled rectangle ; adjust colour with command 'fillcolor colorname/hexnumber'
  1206.          @will animate a point on the next plot/curve command
  1207.          @the curve will not be draw
  1208.          @moves repeatedly from xmin to xmax
  1209.         */
  1210.             if( strstr(get_string(infile,1),"point") != 0 ){animation_type = 15;}else{canvas_error("the only animation type (for now) is \"point\"...");}
  1211.             break;
  1212.         case LEVELCURVE:
  1213.         /*
  1214.         @levelcurve color,expression in x/y,l1,l2,...
  1215.         @draws very primitive level curves for expression, with levels l1,l2,l3,...,l_n
  1216.         @the quality is <b>not to be compared</b> with the Flydraw levelcurve. <br />(choose flydraw if you want quality...)
  1217.         @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
  1218.         @note : the arrays for holding the javascript data are limited in size
  1219.         @note : reduce image size if javascript data arrays get overloaded<br />(command 'plotsteps int' will not control the data size of the plot...)
  1220.         */
  1221.             fill_color = get_color(infile,0);
  1222.             char *fun1 = get_string_argument(infile,0);
  1223.             if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1224.             i = 0;
  1225.             done = FALSE;
  1226.             while( !done ){
  1227.              double_data[i] = get_real(infile,1);
  1228.              i++;
  1229.             }
  1230.             for(c = 0 ; c < i; c++){
  1231.              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);
  1232.              click_cnt++;
  1233.             }
  1234.             reset();
  1235.             break;
  1236.         case TRACE_JSMATH:
  1237.         /*
  1238.          @trace_jsmath some_javascript_math_function
  1239.          @will use a crosshair to trace the jsmath curve
  1240.          @two inputfields will display the current x/y-values (approximated)
  1241.          @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
  1242.          @use linewidth,strokecolor,crosshairsize to adjust the corsshair.
  1243.          @example: trace_jsmath Math.pow(x,2)+4*x+16
  1244.          @example: trace_jsmath Math.sin(Math.pow(x,Math.Pi))+Math.sqrt(x)
  1245.          @no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  1246.          @can not be combined with commands 'mouse color,fontsize' and 'intooltip tip_text'
  1247.         */
  1248.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1249.             if( js_function[DRAW_LINES] != 1 ){ js_function[DRAW_LINES] = 1;}
  1250.             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);
  1251.             break;
  1252.         case JSMATH:
  1253.         /*
  1254.             @jsmath some_javascript_math_function
  1255.             @will calculate an y-value from a userinput x-value and draws a crosshairs on these coordinates.
  1256.             @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
  1257.             @example: jsmath Math.pow(x,2)+4*x+16
  1258.             @example: jsmath Math.sin(Math.pow(x,Math.Pi))+Math.sqrt(x)
  1259.             @no check is done on the validity of your function and/or syntax<br />use error console to debug any errors...
  1260.             @can not be combined with commands 'mouse color,fontsize' and 'intooltip tip_text'
  1261.         */
  1262.             if( js_function[DRAW_CROSSHAIRS] != 1 ){ js_function[DRAW_CROSSHAIRS] = 1;}
  1263.             add_calc_y(js_include_file,canvas_root_id,get_string(infile,1));
  1264.             break;
  1265.         case CURVE:
  1266.         /*
  1267.          @curve color,formula(x)
  1268.          @plot color,formula(x)
  1269.          @use command trange before command curve / plot  (trange -pi,pi)<br />curve color,formula1(t),formula2(t)
  1270.          @use command "precision" to increase the number of digits of the plotted points
  1271.          @use command "plotsteps" to increase / decrease the amount of plotted points (default 150)
  1272.          @may be set draggable / onclick
  1273.         */
  1274.             if( use_parametric == TRUE ){ /* parametric color,fun1(t),fun2(t)*/
  1275.                 use_parametric = FALSE;
  1276.                 stroke_color = get_color(infile,0);
  1277.                 char *fun1 = get_string_argument(infile,0);
  1278.                 char *fun2 = get_string_argument(infile,1);
  1279.                 if( strlen(fun1) == 0 || strlen(fun2) == 0 ){canvas_error("parametric functions are NOT OK !");}
  1280.                 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);
  1281.                 click_cnt++;
  1282.             }
  1283.             else
  1284.             {
  1285.                 stroke_color = get_color(infile,0);
  1286.                 char *fun1 = get_string_argument(infile,1);
  1287.                 if( strlen(fun1) == 0 ){canvas_error("function is NOT OK !");}
  1288.                 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);
  1289.                 click_cnt++;
  1290.             }
  1291.             animation_type = 9;/* reset to curve plotting without animation */
  1292.             reset();
  1293.             break;
  1294.         case FLY_TEXT:
  1295.         /*
  1296.         @ text fontcolor,x,y,font,text_string
  1297.         @ font may be described by keywords : giant,huge,normal,small,tiny
  1298.         @ use command 'fontsize' to increase base fontsize for the keywords
  1299.         @ may be set "onclick" or "drag xy"
  1300.         @ backwards compatible with flydraw
  1301.         @ unicode supported: text red,0,0,huge,\\u2232
  1302.         @ use command 'string' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1303.         @ 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.
  1304.         */
  1305.             for(i = 0; i < 5 ;i++){
  1306.                 switch(i){
  1307.                     case 0: stroke_color = get_color(infile,0);break;/* font_color == stroke_color name or hex color */
  1308.                     case 1: double_data[0] = get_real(infile,0);break; /* x */
  1309.                     case 2: double_data[1] = get_real(infile,0);break; /* y */
  1310.                     case 3: fly_font = get_string_argument(infile,0);
  1311.                             if(strcmp(fly_font,"giant") == 0){
  1312.                                 font_size = (int)(font_size + 24);
  1313.                             }
  1314.                             else
  1315.                             {
  1316.                                 if(strcmp(fly_font,"huge") == 0){
  1317.                                     font_size = (int)(font_size + 14);
  1318.                                 }
  1319.                                 else
  1320.                                 {
  1321.                                     if(strcmp(fly_font,"large") == 0){
  1322.                                         font_size = (int)(font_size + 6);
  1323.                                         }
  1324.                                         else
  1325.                                         {
  1326.                                             if(strcmp(fly_font,"small") == 0){
  1327.                                                 font_size = (int)(font_size - 4);
  1328.                                                 if(font_size<0){font_size = 8;}
  1329.                                         }
  1330.                                     }
  1331.                                 }
  1332.                             }
  1333.                             break; /* font_size ! */
  1334.                     case 4:
  1335.                         temp = get_string_argument(infile,1);
  1336.                         decimals = find_number_of_digits(precision);
  1337.                         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);
  1338.                         click_cnt++;reset();break;
  1339.                     default:break;
  1340.                 }
  1341.             }
  1342.             break;
  1343.         case FLY_TEXTUP:
  1344.         /*
  1345.          @ textup fontcolor,x,y,font,text_string
  1346.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1347.          @ font may be described by keywords : giant,huge,normal,small,tiny
  1348.          @ use command 'fontsize' to increase base fontsize for the keywords
  1349.          @ backwards compatible with flydraw
  1350.          @ unicode supported: textup red,0,0,huge,\\u2232
  1351.          @ use command 'stringup' and 'fontfamily' for a more fine grained control over html5 canvas text element
  1352.          @ 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.
  1353.         */
  1354.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}
  1355.             for(i = 0; i<5 ;i++){
  1356.                 switch(i){
  1357.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1358.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1359.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1360.                     case 3: fly_font = get_string_argument(infile,0);
  1361.                             if(strcmp(fly_font,"giant") == 0){
  1362.                                 font_size = (int)(font_size + 24);
  1363.                             }
  1364.                             else
  1365.                             {
  1366.                                 if(strcmp(fly_font,"huge") == 0){
  1367.                                     font_size = (int)(font_size + 14);
  1368.                                 }
  1369.                                 else
  1370.                                 {
  1371.                                     if(strcmp(fly_font,"large") == 0){
  1372.                                         font_size = (int)(font_size + 6);
  1373.                                         }
  1374.                                         else
  1375.                                         {
  1376.                                             if(strcmp(fly_font,"small") == 0){
  1377.                                                 font_size = (int)(font_size - 4);
  1378.                                                 if(font_size<0){font_size = 8;}
  1379.                                         }
  1380.                                     }
  1381.                                 }
  1382.                             }
  1383.                             break; /* font_size ! */
  1384.                     case 4:
  1385.                     decimals = find_number_of_digits(precision);
  1386.                     temp = get_string_argument(infile,1);
  1387.                     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);
  1388.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1389.                     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);
  1390.                     add_to_buffer(tmp_buffer);
  1391.                     break;
  1392.                     default:break;
  1393.                 }
  1394.             }
  1395.             reset();
  1396.             break;
  1397.         case FONTFAMILY:
  1398.         /*
  1399.          @ fontfamily font_description
  1400.          @ set the font family; for browsers that support it
  1401.          @ font_description: Ariel ,Courier, Helvetica etc
  1402.          @ 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
  1403.          @ use correct syntax : 'font style' 'font size'px 'fontfamily'
  1404.         */
  1405.             font_family = get_string(infile,1);
  1406.             break;
  1407.         case STRINGUP:
  1408.         /*
  1409.          @ stringup color,x,y,rotation_degrees,the text string
  1410.          @ can <b>not</b> be set "onclick" or "drag xy" (because of translaton matrix...mouse incompatible)
  1411.          @ unicode supported: stringup red,0,0,45,\\u2232
  1412.          @ use a command like 'fontfamily bold 34px Courier' <br />to set fonts on browser that support font change
  1413.  
  1414.         */
  1415.             if( js_function[DRAW_TEXTS] != 1 ){ js_function[DRAW_TEXTS] = 1;}   /* can not be added to shape library : rotate / mouse issues */
  1416.             for(i=0;i<6;i++){
  1417.                 switch(i){
  1418.                     case 0: font_color = get_color(infile,0);break;/* name or hex color */
  1419.                     case 1: int_data[0] = x2px(get_real(infile,0));break; /* x */
  1420.                     case 2: int_data[1] = y2px(get_real(infile,0));break; /* y */
  1421.                     case 3: double_data[0] = get_real(infile,0);break;/* rotation */
  1422.                     case 4: decimals = find_number_of_digits(precision);
  1423.                             temp = get_string_argument(infile,1);
  1424.                             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);
  1425.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1426.                             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);
  1427.                             add_to_buffer(tmp_buffer);
  1428.                             break;
  1429.                     default:break;
  1430.                 }
  1431.             }
  1432.             reset();
  1433.             break;
  1434.         case STRING:
  1435.         /*
  1436.          @ string color,x,y,the text string
  1437.          @ may be set "onclick" or "drag xy"
  1438.          @ unicode supported: string red,0,0,\\u2232
  1439.          @ use a command like 'fontfamily italic 24px Ariel' <br />to set fonts on browser that support font change
  1440.         */
  1441.             for(i=0;i<5;i++){
  1442.                 switch(i){
  1443.                     case 0: stroke_color = get_color(infile,0);break;/* name or hex color */
  1444.                     case 1: double_data[0] = get_real(infile,0);break; /* x in xrange*/
  1445.                     case 2: double_data[1] = get_real(infile,0);break; /* y in yrange*/
  1446.                     case 3: decimals = find_number_of_digits(precision);
  1447.                         temp = get_string_argument(infile,1);
  1448.                         decimals = find_number_of_digits(precision);
  1449.                         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);
  1450.                         click_cnt++;reset();break;
  1451.                             break;
  1452.                     default:break;
  1453.                 }
  1454.             }
  1455.             break;
  1456.         case MATHML:
  1457.         /*
  1458.         @ mathml x1,y1,x2,y2,mathml_string
  1459.         @ mathml will be displayed in a rectangle left top (x1:y1) , right bottom (x2:y2)
  1460.         @ can be set onclick <br />(however dragging is not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1461.         @ 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();"
  1462.         @ 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....
  1463.  
  1464.         */
  1465.             if( js_function[DRAW_XML] != 1 ){ js_function[DRAW_XML] = 1;}
  1466.             for(i=0;i<5;i++){
  1467.                 switch(i){
  1468.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1469.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1470.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1471.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1472.                     case 4: decimals = find_number_of_digits(precision);
  1473.                             if(onclick == 1 ){ onclick = click_cnt;click_cnt++;}
  1474.                             temp = get_string(infile,1);
  1475.                             if( strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'"); }
  1476.                             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);
  1477.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1478.                             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);
  1479.                             add_to_buffer(tmp_buffer);
  1480.                             /*
  1481.                              in case inputs are present , trigger adding the read_mathml()
  1482.                              if no other reply_format is defined
  1483.                              note: all other reply types will include a reading of elements with id='mathml'+p)
  1484.                              */
  1485.                             if(strstr(temp,"mathml0") != NULL){
  1486.                              if(reply_format < 1 ){reply_format = 16;} /* no other reply type is defined */
  1487.                             }
  1488.                             break;
  1489.                     default:break;
  1490.                 }
  1491.             }
  1492.             reset();
  1493.             break;
  1494.         case HTTP:
  1495.         /*
  1496.          @http x1,y1,x2,y2,http://some_adress.com
  1497.          @an active html-page will be displayed in an "iframe" rectangle left top (x1:y1) , right bottom (x2:y2)
  1498.          @do not use interactivity (or mouse) if the mouse needs to be active in the iframe
  1499.          @can not be 'set onclick' or 'drag xy'
  1500.         */
  1501.             if( js_function[DRAW_HTTP] != 1 ){ js_function[DRAW_HTTP] = 1;}
  1502.             for(i=0;i<5;i++){
  1503.                 switch(i){
  1504.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in x/y-range coord system -> pixel width */
  1505.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in x/y-range coord system  -> pixel height */
  1506.                     case 2: int_data[2]=x2px(get_real(infile,0)) - int_data[0];break; /* width in x/y-range coord system -> pixel width */
  1507.                     case 3: int_data[3]=y2px(get_real(infile,0)) - int_data[1];break; /* height in x/y-range coord system  -> pixel height */
  1508.                     case 4: decimals = find_number_of_digits(precision);
  1509.                             temp = get_string(infile,1);
  1510.                             if(strstr(temp,"\"") != 0 ){ temp = str_replace(temp,"\"","'");}
  1511.                             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);
  1512.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1513.                             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);
  1514.                             add_to_buffer(tmp_buffer);
  1515.                     break;
  1516.                 }
  1517.             }
  1518.             reset();
  1519.             break;
  1520.         case HTML:
  1521.         /*
  1522.          @ html x1,y1,x2,y2,html_string
  1523.          @ all tags are allowed
  1524.          @ can be set onclick <br />(dragging not supported)<br />javascript:read_dragdrop(); will return click number of mathml-object
  1525.          @ 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.
  1526.  
  1527.          note: uses the same code as 'mathml'
  1528.         */
  1529.             break;
  1530.         case X_AXIS_STRINGS:
  1531.         /*
  1532.          @ xaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1533.          @ xaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1534.          @ use these x-axis values in stead of default xmin...xmax
  1535.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1536.          @ if the 'x-axis words' are to big amd will overlap, a simple alternating offset will be applied
  1537.          @ 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
  1538.          @ 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
  1539.         */
  1540.             temp = get_string(infile,1);
  1541.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1542.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1543.             fprintf(js_include_file,"x_strings = [\"%s\"];\n ",temp);
  1544.             use_axis_numbering = 1;
  1545.             break;
  1546.         case Y_AXIS_STRINGS:
  1547.         /*
  1548.          @ yaxis num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1549.          @ yaxistext num1:string1:num2:string2:num3:string3:num4:string4:....num_n:string_n
  1550.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1551.          @ use these y-axis values in stead of default ymin...ymax
  1552.          @ 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
  1553.         */
  1554.             temp = get_string(infile,1);
  1555.             if( strstr(temp,":") != 0 ){ temp = str_replace(temp,":","\",\"");}
  1556.             if( strstr(temp,"pi") != 0 ){ temp = str_replace(temp,"pi","(3.1415927)");}/* we need to replace pi for javascript y-value*/
  1557.             fprintf(js_include_file,"y_strings = [\"%s\"];\n ",temp);
  1558.             use_axis_numbering = 1;
  1559.             break;
  1560.  
  1561.         case AXIS_NUMBERING:
  1562.         /*
  1563.             @ axisnumbering
  1564.             @ keyword, no aguments required
  1565.         */
  1566.             use_axis_numbering = 1;
  1567.             break;
  1568.         case AXIS:
  1569.         /*
  1570.             @ axis
  1571.             @ keyword, no aguments required
  1572.  
  1573.         */
  1574.             use_axis = TRUE;
  1575.             break;
  1576.         case SGRAPH:
  1577.         /*
  1578.          @ sgraph xstart,ystart,xmajor,ymajor,xminor,yminor,majorgrid_color,minorgrid_color
  1579.          @ primitive implementation of a 'broken scale' graph...
  1580.          @ not very versatile.
  1581.          @ 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
  1582.         */
  1583.             if( js_function[DRAW_SGRAPH] != 1 ){ js_function[DRAW_SGRAPH] = 1;}
  1584.             for(i = 0 ; i < 8 ;i++){
  1585.                 switch(i){
  1586.                     case 0:double_data[0] = get_real(infile,0);break;
  1587.                     case 1:double_data[1] = get_real(infile,0);break;
  1588.                     case 2:double_data[2] = get_real(infile,0);break;
  1589.                     case 3:double_data[3] = get_real(infile,0);break;
  1590.                     case 4:int_data[0] = (int)(get_real(infile,0));break;
  1591.                     case 5:int_data[1] = (int)(get_real(infile,0));break;
  1592.                     case 6:stroke_color = get_color(infile,0);break;
  1593.                     case 7:font_color = get_color(infile,1);
  1594.                     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);
  1595.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1596.                     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);
  1597.                     add_to_buffer(tmp_buffer);
  1598.                     break;
  1599.                     default:break;
  1600.                 }
  1601.             }
  1602.             /* sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity)*/
  1603.             break;
  1604.         case GRID:/* xmajor,ymajor,color [,xminor,yminor,tick length (px) ,color]*/
  1605.         /*
  1606.          @ grid step_x,step_y,gridcolor
  1607.          @ use command "fontcolor", "fontsize" , "fontfamily" to adjust font <br />defaults: black,12,Ariel
  1608.          @ 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
  1609.          @ 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)
  1610.          @ can not be set "onclick" or "drag xy"
  1611.          @ 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')
  1612.          @ 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')
  1613.          @ 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')
  1614.         */
  1615.             if( js_function[DRAW_YLOGSCALE] == 1 ){canvas_error("only one grid type is allowed...");}
  1616.             if( js_function[DRAW_GRID] != 1 ){ js_function[DRAW_GRID] = 1;}
  1617.             for(i=0;i<4;i++){
  1618.                 switch(i){
  1619.                     case 0:double_data[0] = get_real(infile,0);break;/* xmajor */
  1620.                     case 1:double_data[1] = get_real(infile,0);break;/* ymajor */
  1621.                     case 2:
  1622.                     if( use_axis == TRUE ){
  1623.                         stroke_color = get_color(infile,0);
  1624.                         done = FALSE;
  1625.                         int_data[0] = (int) (get_real(infile,0));/* xminor */
  1626.                         int_data[1] = (int) (get_real(infile,0));/* yminor */
  1627.                         int_data[2] = (int) (get_real(infile,0));/* tic_length */
  1628.                         fill_color = get_color(infile,1); /* used as axis_color*/
  1629.                     }
  1630.                     else
  1631.                     {
  1632.                         int_data[0] = 1;
  1633.                         int_data[1] = 1;
  1634.                         stroke_color = get_color(infile,1);
  1635.                         fill_color = stroke_color;
  1636.                     }
  1637.                     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 !");}
  1638.                     /* set snap_x snap_y values in pixels */
  1639.                     fprintf(js_include_file,"snap_x = %f;snap_y = %f\n;",double_data[0] / int_data[0],double_data[1] / int_data[1]);
  1640. /* 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){ */
  1641.  
  1642.                     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);
  1643.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1644.                     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);
  1645.                     add_to_buffer(tmp_buffer);
  1646.                     break;
  1647.                 }
  1648.             }
  1649.             reset();
  1650.             break;
  1651.         case OPACITY:
  1652.         /*
  1653.         @ opacity 0-255,0-255
  1654.         @
  1655.         */
  1656.             for(i = 0 ; i<2;i++){
  1657.                 switch(i){
  1658.                     case 0: double_data[0]=(int)(get_real(infile,0));break;
  1659.                     case 1: double_data[1]=(int)(get_real(infile,1));break;
  1660.                     default: break;
  1661.                 }
  1662.             }
  1663.             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 ? */
  1664.             stroke_opacity = (double) (0.0039215*double_data[0]);/* 0.0 - 1.0 */
  1665.             fill_opacity = (double) (0.0039215*double_data[1]);/* 0.0 - 1.0 */
  1666.             break;
  1667.         case ROTATE:
  1668.         /*
  1669.          @rotate rotation_angle
  1670.          @
  1671.         */
  1672.             use_rotate = TRUE;
  1673.             use_translate = TRUE;
  1674.             translate_x = x2px(0);
  1675.             translate_y = y2px(0);
  1676.             angle = get_real(infile,1);
  1677.             break;
  1678.         case KILLAFFINE:
  1679.         /*
  1680.         @ killaffine
  1681.         @ keyword : resets the transformation matrix to 1,0,0,1,0,0
  1682.         */
  1683.             use_affine = FALSE;
  1684.             snprintf(affine_matrix,14,"[1,0,0,1,0,0]");
  1685.             break;
  1686.         case AFFINE:
  1687.         /*
  1688.          @affine a,b,c,d,tx,ty
  1689.          @ defines a transformation matrix for subsequent objects
  1690.          @ use keyword 'killaffine' to end the transformation
  1691.          @ note 1: only 'draggable' / 'noclick' objects can be transformed.
  1692.          @ note 2: do not use 'onclick' or 'drag xy' with tranformation objects : the mouse coordinates do not get transformed (yet)
  1693.          @ note 3: no matrix operations on the transformation matrix implemented (yet)
  1694.          @ a : Scales the drawings horizontally
  1695.          @ b : Skews the drawings horizontally
  1696.          @ c : Skews the drawings vertically
  1697.          @ d : Scales the drawings vertically
  1698.          @ tx: Moves the drawings horizontally in pixels !
  1699.          @ ty: Moves the drawings vertically in pixels !
  1700.         */
  1701.             for(i = 0 ; i<6;i++){
  1702.                 switch(i){
  1703.                     case 0: double_data[0] = get_real(infile,0);break;
  1704.                     case 1: double_data[1] = get_real(infile,0);break;
  1705.                     case 2: double_data[2] = get_real(infile,0);break;
  1706.                     case 3: double_data[3] = get_real(infile,0);break;
  1707.                     case 4: int_data[0] = (int)(get_real(infile,0));break;
  1708.                     case 5: int_data[1] = (int)(get_real(infile,1));
  1709.                         use_affine = TRUE;
  1710.                         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]);
  1711.                         check_string_length(string_length);affine_matrix = my_newmem(string_length+1);
  1712.                         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]);
  1713.                     break;
  1714.                     default: break;
  1715.                 }
  1716.             }
  1717.         break;
  1718.         case KILLTRANSLATION:
  1719.         /*
  1720.          killtranslation
  1721.         */
  1722.             break;
  1723.         case TRANSLATION:
  1724.         /*
  1725.          @translation tx,ty
  1726.          @
  1727.         */
  1728.             use_translate = TRUE;
  1729.             translate_x = get_real(infile,0);
  1730.             translate_y = get_real(infile,1);
  1731.             break;
  1732.         case DASHED:
  1733.         /*
  1734.         @ keyword "dashed"
  1735.         @ next object will be drawn with a dashed line
  1736.         @ change dashing scheme by using command "dashtype int,int)
  1737.         */
  1738.             use_dashed = TRUE;
  1739.             break;
  1740.         case FILLED:
  1741.         /*
  1742.         @ keyword "filled"
  1743.         @ the next 'fillable' object (only) will be filled
  1744.         @ use command "fillcolor color" to set fillcolor
  1745.         @ use command "opacity 0-255,0-255" to set stroke and fill-opacity
  1746.         @ 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 !
  1747.         */
  1748.             use_filled = TRUE;
  1749.             break;
  1750.         case STYLE:
  1751.         /*
  1752.          @highlight color,opacity,linewidth
  1753.          @ NOT IMPLEMENTED
  1754.          @ use command "onclick" : when the object receives a userclick it will increase it's linewidth
  1755.         */
  1756.             break;
  1757.         case FILLCOLOR:
  1758.         /*
  1759.         @ fillcolor colorname or #hex
  1760.         @ Set the color for a filled object : mainly used for command 'userdraw obj,stroke_color'
  1761.         @ All fillable massive object will have a fillcolor == strokecolor (just to be compatible with flydraw...)
  1762.         */
  1763.             fill_color = get_color(infile,1);
  1764.             break;
  1765.         case STROKECOLOR:
  1766.         /*
  1767.         @ strokecolor colorname or #hex
  1768.         @ to be used for commands that do not supply a color argument (like command 'linegraph')
  1769.         */
  1770.             stroke_color = get_color(infile,1);
  1771.             break;
  1772.         case BGIMAGE:
  1773.         /*
  1774.          @bgimage image_location
  1775.          @use an image as background .<br />(we use the background of 'canvas_div' )
  1776.          @the background image will be resized to match "width = xsize" and "height = ysize"
  1777.         */
  1778.         URL = get_string(infile,1);
  1779.         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);
  1780.             break;
  1781.         case BGCOLOR:
  1782.         /*
  1783.          @bgcolor colorname or #hex
  1784.          @use this color as background of the "div" containing the canvas(es)
  1785.         */
  1786.         /* [255,255,255]*/
  1787.             bgcolor = get_string(infile,1);
  1788.             if(strstr(bgcolor,"#") == NULL){ /* convert colorname -> #ff00ff */
  1789.                 int found = 0;
  1790.                 for( i = 0; i < NUMBER_OF_COLORNAMES ; i++ ){
  1791.                     if( strcmp( colors[i].name , bgcolor ) == 0 ){
  1792.                         bgcolor = colors[i].hex;
  1793.                         found = 1;
  1794.                         break;
  1795.                     }
  1796.                 }
  1797.                 if(found == 0){canvas_error("your bgcolor is not in my rgb.txt data list : use hexcolor...something like #a0ffc4");}
  1798.             }
  1799.             fprintf(js_include_file,"<!-- set background color of canvas div -->\ncanvas_div.style.backgroundColor = \"%s\";canvas_div.style.opacity = %f;\n",bgcolor,fill_opacity);
  1800.             break;
  1801.         case COPY:
  1802.         /*
  1803.         @ copy x,y,x1,y1,x2,y2,[filename URL]
  1804.         @ Insert the region from (x1,y1) to (x2,y2) (in pixels) of [filename] to (x,y) in x/y-range
  1805.         @ If x1=y1=x2=y2=-1, the whole [filename URL] is copied.
  1806.         @ [filename] is the URL of the image
  1807.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  1808.         @ 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
  1809.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  1810.  
  1811.         context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  1812.         draw_external_image(canvas_type,URL,sx,sy,swidth,sheight,x,y,width,height,drag_drop){
  1813.         */
  1814.             for(i = 0 ; i<7;i++){
  1815.                 switch(i){
  1816.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x left top corner in x/y range  */
  1817.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y left top corner in x/y range */
  1818.                     case 2: int_data[2]=(int)(get_real(infile,0));break;/* x1 in px of external image */
  1819.                     case 3: int_data[3]=(int)(get_real(infile,0));break;/* y1 in px of external image */
  1820.                     case 4: int_data[4]=(int)(get_real(infile,0));break;/* x2 --> width  */
  1821.                     case 5: int_data[5]=(int)(get_real(infile,0)) ;break;/* y2 --> height */
  1822.                     case 6: URL = get_string(infile,1);
  1823.                             int_data[6] = int_data[4] - int_data[2];/* swidth & width (if not scaling )*/
  1824.                             int_data[7] = int_data[5] - int_data[3];/* sheight & height (if not scaling )*/
  1825.                             if( drag_type > -1 ){
  1826.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  1827.                                 if(reply_format < 1 ){reply_format = 20;}
  1828.                                 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);
  1829.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1830.                                 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);
  1831.                                 drag_type = -1;
  1832.                                 ext_img_cnt++;
  1833.                             }
  1834.                             else
  1835.                             {
  1836.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  1837.                                 /*
  1838.                                 draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\n\
  1839.                                 */
  1840.                                 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]);
  1841.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1842.                                 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]);
  1843.                             }
  1844.                             add_to_buffer(tmp_buffer);
  1845.                             break;
  1846.                     default: break;
  1847.                 }
  1848.             }
  1849.             reset();
  1850.             break;
  1851. /*
  1852. context.drawImage(img,sx,sy,swidth,sheight,x,y,width,height);
  1853. img     Specifies the image, canvas, or video element to use
  1854. sx      The x coordinate where to start clipping : x1 = int_data[0]
  1855. sy      The y coordinate where to start clipping : x2 = int_data[1]
  1856. swidth  The width of the clipped image : int_data[2] - int_data[0]
  1857. sheight The height of the clipped image : int_data[3] - int_data[1]
  1858. x       The x coordinate where to place the image on the canvas : dx1 = int_data[4]
  1859. y       The y coordinate where to place the image on the canvas : dy1 = int_data[5]
  1860. width   The width of the image to use (stretch or reduce the image) : dx2 - dx1 = int_data[6]
  1861. height  The height of the image to use (stretch or reduce the image) : dy2 - dy1 = int_data[7]
  1862. */
  1863.         case COPYRESIZED:
  1864.         /*
  1865.         @ copyresized x1,y2,x2,y2,dx1,dy1,dx2,dy2,image_file_url
  1866.         @ 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
  1867.         @ If x1=y1=x2=y2=-1, the whole [filename / URL ] is copied and resized.
  1868.         @ URL is normal URL of network reachable image file location<br />(eg special url for 'classexo' not -yet- implemented)
  1869.         @ 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
  1870.         @ if you want to draw / userdraw  on an "imported" image, make sure it is transparent.<br />for example GNUPlot: set terminal gif transparent
  1871.         */
  1872.             for(i = 0 ; i<9;i++){
  1873.                 switch(i){
  1874.                     case 0: int_data[0] = (int)(get_real(infile,0));break; /* x1 */
  1875.                     case 1: int_data[1] = (int)(get_real(infile,0));break; /* y1 */
  1876.                     case 2: int_data[2] = (int)(get_real(infile,0));break;/* x2 */
  1877.                     case 3: int_data[3] = (int)(get_real(infile,0));break;/* y2 */
  1878.                     case 4: int_data[4] = x2px(get_real(infile,0));break;/* dx1 */
  1879.                     case 5: int_data[5] = y2px(get_real(infile,0));break;/* dy1 */
  1880.                     case 6: int_data[6] = x2px(get_real(infile,0));break;/* dx2 */
  1881.                     case 7: int_data[7] = y2px(get_real(infile,0));break;/* dy2 */
  1882.                     case 8: URL = get_string(infile,1);
  1883.                             if( drag_type > -1 ){
  1884.                                 if( js_function[DRAG_EXTERNAL_IMAGE] != 1 ){ js_function[DRAG_EXTERNAL_IMAGE] = 1;}
  1885.                                 if(reply_format < 1 ){reply_format = 20;}
  1886.                                 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);
  1887.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1888.                                 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);
  1889.                                 drag_type = -1;
  1890.                                 ext_img_cnt++;
  1891.                             }
  1892.                             else
  1893.                             {
  1894.                                 if( js_function[DRAW_EXTERNAL_IMAGE] != 1 ){ js_function[DRAW_EXTERNAL_IMAGE] = 1;}
  1895.                                 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]);
  1896.                                 check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1897.                                 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]);
  1898.                             }
  1899.                             add_to_buffer(tmp_buffer);
  1900.                     default: break;
  1901.                 }
  1902.             }
  1903.             reset();
  1904.             break;
  1905.         case BUTTON:
  1906.         /*
  1907.          button x,y,value
  1908.         */
  1909.         break;
  1910.         case INPUTSTYLE:
  1911.         /*
  1912.         @ inputstyle style_description
  1913.         @ example: inputstyle color:blue;font-weight:bold;font-style:italic;font-size:16pt
  1914.         */
  1915.             input_style = get_string(infile,1);
  1916.             break;
  1917.         case INPUT:
  1918.         /*
  1919.          @ input x,y,size,editable,value
  1920.          @ to set inputfield "readonly", use editable = 0
  1921.          @ only active inputfields (editable = 1) will be read with read_canvas();
  1922.          @ may be further controlled by "inputstyle" (inputcss is not yet implemented...)
  1923.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  1924.         */
  1925.         if( js_function[DRAW_INPUTS] != 1 ){ js_function[DRAW_INPUTS] = 1;}
  1926.             for(i = 0 ; i<5;i++){
  1927.                 switch(i){
  1928.                     case 0: int_data[0]=x2px(get_real(infile,0));break;/* x in px */
  1929.                     case 1: int_data[1]=y2px(get_real(infile,0));break;/* y in px */
  1930.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break; /* size */
  1931.                     case 3: if( get_real(infile,1) >0){int_data[3] = 1;}else{int_data[3] = 0;};break; /* readonly */
  1932.                     case 4:
  1933.                             temp = get_string_argument(infile,1);
  1934.                             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);
  1935.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1936.                             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);
  1937.                             add_to_buffer(tmp_buffer);
  1938.                             input_cnt++;break;
  1939.                     default: break;
  1940.                 }
  1941.             }
  1942.             if(reply_format < 1 ){reply_format = 15;}
  1943.             reset();
  1944.             break;
  1945.         case TEXTAREA:
  1946.         /*
  1947.          @ textarea x,y,cols,rows,readonly,value
  1948.          @ may be further controlled by "inputstyle"
  1949.          @ if mathml inputfields are present and / or some userdraw is performed, these data will NOT be send as well (javascript:read_canvas();)
  1950.         */
  1951.             if( js_function[DRAW_TEXTAREAS] != 1 ){ js_function[DRAW_TEXTAREAS] = 1;}
  1952.             for(i = 0 ; i<6;i++){
  1953.                 switch(i){
  1954.                     case 0: int_data[0]=x2px(get_real(infile,0));break; /* x in px */
  1955.                     case 1: int_data[1]=y2px(get_real(infile,0));break; /* y in px */
  1956.                     case 2: int_data[2]=abs( (int)(get_real(infile,0)));break;/* cols */
  1957.                     case 3: int_data[3]=abs( (int)(get_real(infile,0)));break;/* rows */
  1958.                     case 4: if( get_real(infile,1) >0){int_data[4] = 1;}else{int_data[3] = 0;};break; /* readonly */
  1959.                     case 5: temp = get_string_argument(infile,1);
  1960.                             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);
  1961.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  1962.                             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);
  1963.                             add_to_buffer(tmp_buffer);
  1964.                             input_cnt++;break;
  1965.                     default: break;
  1966.                 }
  1967.             }
  1968.             if(reply_format < 1 ){reply_format = 15;}
  1969.             reset();
  1970.             break;
  1971.         case MOUSE_PRECISION:
  1972.         /*
  1973.             @ precision int
  1974.             @ 10 = 1 decimal ; 100 = 2 decimals etc
  1975.             @ may be used / changed before every object
  1976.         */
  1977.             precision = (int) (get_real(infile,1));
  1978.             break;
  1979.         case SETLIMITS:
  1980.         /*
  1981.             @setlimits
  1982.             @keyword : if set, it will produce 4 inputfields for 'xmin,xmax,ymin,ymax' and an 'ok' button
  1983.             @may be used for inputfield based zooming / panning
  1984.             @note:the input value will not be checked on validity
  1985.         */
  1986.             add_setlimits(js_include_file,canvas_root_id);
  1987.             /* add_setlimits provides 'fprintf(js_include_file,"use_pan_and_zoom = 1;");' */
  1988.             use_pan_and_zoom = TRUE;
  1989.             done = TRUE;
  1990.             break;
  1991.         case ZOOM:
  1992.         /*
  1993.          @ zoom button_color
  1994.          @ introduce a controlpanel at the lower right corner
  1995.          @ 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
  1996.          @ the 'x' symbol will do a 'location.reload' of the page, and thus reset all canvas drawings.
  1997.          @ choose an appropriate colour, so the small 'x,arrows,-,+' are clearly visible
  1998.          @ command 'opacity' may be used to set stroke_opacity of 'buttons
  1999.          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
  2000.          @ 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 !!
  2001.         */
  2002.             fprintf(js_include_file,"use_pan_and_zoom = 1;");
  2003.             use_pan_and_zoom = TRUE;
  2004.             if( js_function[DRAW_ZOOM_BUTTONS] != 1 ){ js_function[DRAW_ZOOM_BUTTONS] = 1;}
  2005.             /* we use BG_CANVAS (0) */
  2006.             stroke_color = get_color(infile,1);
  2007.             string_length = snprintf(NULL,0," draw_zoom_buttons(%d,\"%s\",%f);",BG_CANVAS,stroke_color,stroke_opacity);
  2008.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2009.             snprintf(tmp_buffer,MAX_BUFFER-1,"draw_zoom_buttons(%d,\"%s\",%f);",BG_CANVAS,stroke_color,stroke_opacity);
  2010.             add_to_buffer(tmp_buffer);
  2011.             done = TRUE;
  2012.             break;
  2013.         case ONCLICK:
  2014.         /*
  2015.          @ onclick
  2016.          @ keyword, no arguments
  2017.          @ if the next object is clicked, it's 'object sequence number' in fly script is returned <br /> by javascript:read_canvas();
  2018.          @ Line based object will show an increase in linewidth<br />Font based objects will show the text in 'bold' when clicked.
  2019.          @ NOTE: not all objects  may be set clickable
  2020.         */
  2021.  
  2022.             onclick = 1;
  2023.             break;
  2024.         case DRAG:
  2025.         /*
  2026.          @ drag [x][y][xy]
  2027.          @ the next object will be draggable in x / y / xy direction
  2028.          @ the displacement can be read by 'javascript:read_dragdrop();'
  2029.          @ 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.
  2030.          @ 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 !!
  2031.         */
  2032.             temp = get_string(infile,1);
  2033.             if(strstr(temp,"xy") != NULL ){
  2034.                 drag_type = 0;
  2035.             }
  2036.             else
  2037.             {
  2038.                 if(strstr(temp,"x") != NULL ){
  2039.                     drag_type = 1;
  2040.                 }
  2041.                 else
  2042.                 {
  2043.                     drag_type = 2;
  2044.                 }
  2045.             }
  2046.             onclick = 2;
  2047.             /* if(use_userdraw == TRUE ){canvas_error("\"drag & drop\" may not be combined with \"userdraw\" or \"pan and zoom\" \n");} */
  2048.             break;
  2049.         case BLINK:
  2050.         /*
  2051.          @ blink time(seconds)
  2052.          @ NOT IMPLEMETED -YET
  2053.         */
  2054.             break;
  2055.         case MOUSE:
  2056.         /*
  2057.          @ mouse color,fontsize
  2058.          @ will display the cursor coordinates  in 'color' and 'font size'<br /> using default fontfamily Ariel
  2059.         */
  2060.             stroke_color = get_color(infile,0);
  2061.             font_size = (int) (get_real(infile,1));
  2062.             tmp_buffer = my_newmem(26);
  2063.             snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
  2064.             add_js_mouse(js_include_file,MOUSE_CANVAS,canvas_root_id,precision,stroke_color,font_size,stroke_opacity);
  2065.             break;
  2066.         case INTOOLTIP:
  2067.             /*
  2068.             @ intooltip link_text
  2069.             @ link_text is a single line (span-element)
  2070.             @ link_text may also be an image URL http://some_server/images/my_image.png
  2071.             @ link_text may contain HTML markup
  2072.             @ the canvas will be displayed in a tooltip on 'link_text'
  2073.             @ the canvas is default transparent: use command 'bgcolor color' to adjust background-color<br />the link test will alos be shown with this bgcolor.
  2074.             */
  2075.             if(use_input_xy != FALSE ){canvas_error("intooltip can not be combined with userinput_xy command");}
  2076.             use_tooltip = TRUE;
  2077.             tooltip_text = get_string(infile,1);
  2078.             if(strstr(tooltip_text,"\"") != 0 ){ tooltip_text = str_replace(tooltip_text,"\"","'"); }
  2079.             break;
  2080.         case AUDIO:
  2081.         /*
  2082.         @ audio x,y,w,h,loop,visible,audiofile location
  2083.         @ x,y : left top corner of audio element (in xrange / yrange)
  2084.         @ w,y : width and height in pixels
  2085.         @ loop : 0 or 1 ( 1 = loop audio fragment)
  2086.         @ visible : 0 or 1 (1 = show controls)
  2087.         @ audio format may be in *.mp3 or *.ogg
  2088.         @ If you are using *.mp3 : be aware that FireFox will not (never) play this ! (Pattented format)
  2089.         @ if you are using *.ogg : be aware that Microsoft based systems not support it natively
  2090.         @ To avoid problems supply both types (mp3 and ogg) of audiofiles.<br />the program will use both as source tag
  2091.         @ 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 />
  2092.         */
  2093.             if( js_function[DRAW_AUDIO] != 1 ){ js_function[DRAW_AUDIO] = 1;}
  2094.             for(i=0;i<7;i++){
  2095.                 switch(i){
  2096.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2097.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2098.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2099.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2100.                     case 4: int_data[4] = (int) (get_real(infile,0)); if(int_data[4] != TRUE){int_data[4] = FALSE;} break; /* loop boolean */
  2101.                     case 5: int_data[5] = (int) (get_real(infile,0)); if(int_data[5] != TRUE){int_data[5] = FALSE;} break; /* visible boolean */
  2102.                     case 6:
  2103.                     temp = get_string(infile,1);
  2104.                     if( strstr(temp,".mp3") != 0 ){ temp = str_replace(temp,".mp3","");}
  2105.                     if( strstr(temp,".ogg") != 0 ){ temp = str_replace(temp,".ogg","");}
  2106.                     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);
  2107.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2108.                     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);
  2109.                     add_to_buffer(tmp_buffer);
  2110.                     break;
  2111.                     default:break;
  2112.                 }
  2113.             }
  2114.             reset();
  2115.             break;
  2116.         case VIDEO:
  2117.         /*
  2118.         @ video x,y,w,h,videofile location
  2119.         @ x,y : left top corner of audio element (in xrange / yrange)
  2120.         @ w,y : width and height in pixels
  2121.         @ example:<br />wims getfile : video 0,0,120,120,myvideo.mp4
  2122.         @ video format may be in *.mp4 (todo:other formats)
  2123.         */
  2124.             if( js_function[DRAW_VIDEO] != 1 ){ js_function[DRAW_VIDEO] = 1;}
  2125.             for(i=0;i<5;i++){
  2126.                 switch(i){
  2127.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x in x/y-range coord system -> pixel */
  2128.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y in x/y-range coord system  -> pixel */
  2129.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* pixel width */
  2130.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* height pixel height */
  2131.                     case 4: temp = get_string(infile,1);
  2132.                             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);
  2133.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2134.                             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);
  2135.                             add_to_buffer(tmp_buffer);
  2136.                             break;
  2137.                     default:break;
  2138.                 }
  2139.             }
  2140.             reset();
  2141.             break;
  2142.         case HATCHFILL:
  2143.         /*
  2144.         @ hatchfill x0,y0,dx,dy,color
  2145.         @ x0,y0 in xrange / yrange
  2146.         @ distances dx,dy in pixels
  2147.         */
  2148.             if( js_function[DRAW_HATCHFILL] != 1 ){ js_function[DRAW_HATCHFILL] = 1;}
  2149.             for(i=0;i<5;i++){
  2150.                 switch(i){
  2151.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2152.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2153.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2154.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2155.                     case 4: stroke_color = get_color(infile,1);
  2156.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2157.                     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);
  2158.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2159.                     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);
  2160.                     add_to_buffer(tmp_buffer);
  2161.                     break;
  2162.                     default:break;
  2163.                 }
  2164.             }
  2165.             reset();
  2166.         break;
  2167.         case DIAMONDFILL:
  2168.         /*
  2169.         @ diamondfill x0,y0,dx,dy,color
  2170.         @ x0,y0 in xrange / yrange
  2171.         @ distances dx,dy in pixels
  2172.         */
  2173.             if( js_function[DRAW_DIAMONDFILL] != 1 ){ js_function[DRAW_DIAMONDFILL] = 1;}
  2174.             for(i=0;i<5;i++){
  2175.                 switch(i){
  2176.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2177.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2178.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2179.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2180.                     case 4: stroke_color = get_color(infile,1);
  2181.                     /* draw_hatchfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2182.                     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);
  2183.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2184.                     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);
  2185.                     add_to_buffer(tmp_buffer);
  2186.                     break;
  2187.                     default:break;
  2188.                 }
  2189.             }
  2190.             reset();
  2191.         break;
  2192.         case GRIDFILL:
  2193.         /*
  2194.         @ gridfill x0,y0,dx,dy,color
  2195.         @ x0,y0 in xrange / yrange
  2196.         @ distances dx,dy in pixels
  2197.         */
  2198.             if( js_function[DRAW_GRIDFILL] != 1 ){ js_function[DRAW_GRIDFILL] = 1;}
  2199.             for(i=0;i<5;i++){
  2200.                 switch(i){
  2201.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2202.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2203.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2204.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2205.                     case 4: stroke_color = get_color(infile,1);
  2206.                     /* draw_gridfill(ctx,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize) */
  2207.                     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);
  2208.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2209.                     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);
  2210.                     add_to_buffer(tmp_buffer);
  2211.                     break;
  2212.                     default:break;
  2213.                 }
  2214.             }
  2215.             reset();
  2216.         break;
  2217.         case DOTFILL:
  2218.         /*
  2219.         @ dotfill x0,y0,dx,dy,color
  2220.         @ x0,y0 in xrange / yrange
  2221.         @ distances dx,dy in pixels
  2222.         @ radius of dots is linewidth
  2223.         */
  2224.             if( js_function[DRAW_DOTFILL] != 1 ){ js_function[DRAW_DOTFILL] = 1;}
  2225.             for(i=0;i<5;i++){
  2226.                 switch(i){
  2227.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2228.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2229.                     case 2: int_data[2] = (int) (get_real(infile,0)); break; /* dx pixel */
  2230.                     case 3: int_data[3] = (int) (get_real(infile,0)); break; /* dy pixel*/
  2231.                     case 4: stroke_color = get_color(infile,1);
  2232.                     /* draw_dotfill(ctx,x0,y0,dx,dy,radius,color,opacity,xsize,ysize) */
  2233.                     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);
  2234.                     check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2235.                     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);
  2236.                     add_to_buffer(tmp_buffer);
  2237.                     break;
  2238.                     default:break;
  2239.                 }
  2240.             }
  2241.             reset();
  2242.         break;
  2243.         case IMAGEFILL:
  2244.         /*
  2245.         @ imagefill dx,dy,image_url
  2246.         @ The next suitable <b>filled object</b> will be filled with "image_url" tiled
  2247.         @ After pattern filling ,the fill-color should be reset !
  2248.         @ wims getins / image from class directory : imagefill 80,80,my_image.gif
  2249.         @ normal url : imagefill 80,80,$module_dir/gifs/my_image.gif
  2250.         @ normal url : imagefill 80,80,http://adres/a/b/c/my_image.jpg
  2251.         @ if dx,dy is larger than the image, the whole image will be background to the next object.
  2252.         */
  2253.             if( js_function[DRAW_IMAGEFILL] != 1 ){ js_function[DRAW_IMAGEFILL] = 1;}
  2254.             for(i=0 ;i < 3 ; i++){
  2255.                 switch(i){
  2256.                     case 0:int_data[0] = (int) (get_real(infile,0));break;
  2257.                     case 1:int_data[1] = (int) (get_real(infile,0));break;
  2258.                     case 2: URL = get_string_argument(infile,1);
  2259.                             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);
  2260.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2261.                             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);
  2262.                             add_to_buffer(tmp_buffer);
  2263.                     break;
  2264.                 }
  2265.             }
  2266.         break;
  2267.         case FILLTOBORDER:
  2268.         /*
  2269.         @ filltoborder x,y,bordercolor,color
  2270.         @ fill the region  of point (x:y) bounded by 'bordercolor' with color 'color'
  2271.         @ any other color will not act as border to the bucket fill
  2272.         @ use this command  after all boundary objects are declared.
  2273.         @ 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..
  2274.         */
  2275.             for(i=0 ;i < 4 ; i++){
  2276.                 switch(i){
  2277.                     case 0:double_data[0] = get_real(infile,0);break;
  2278.                     case 1:double_data[1] = get_real(infile,0);break;
  2279.                     case 2:bgcolor = get_color(infile,0);break;
  2280.                     case 3:fill_color = get_color(infile,1);
  2281.                            if(js_function[DRAW_FILLTOBORDER] != 1 ){/* use only once */
  2282.                                 js_function[DRAW_FILLTOBORDER] = 1;
  2283.                                 add_js_filltoborder(js_include_file,canvas_root_id);
  2284.                            }
  2285.                            decimals = find_number_of_digits(precision);
  2286.                            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));
  2287.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2288.                            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));
  2289.                            add_to_buffer(tmp_buffer);
  2290.                            break;
  2291.                     default:break;
  2292.                     }
  2293.                 }
  2294.         break;
  2295.         case FLOODFILL:
  2296.         /*
  2297.         @ floodfill x,y,color
  2298.         @ alternative syntax: fill x,y,color
  2299.         @ fill the region of point (x:y) with color 'color'
  2300.         @ any other color or size of picture (borders of picture) will act as border to the bucket fill
  2301.         @ use this command  after all boundary objects are declared.
  2302.         @ Use command 'clickfill,color' for user click driven flood fill.
  2303.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2304.         @ 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..
  2305.         */
  2306.             for(i=0 ;i < 4 ; i++){
  2307.                 switch(i){
  2308.                     case 0:double_data[0] = get_real(infile,0);break;
  2309.                     case 1:double_data[1] = get_real(infile,0);break;
  2310.                     case 2:fill_color = get_color(infile,1);
  2311.                            if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2312.                                 js_function[DRAW_FLOODFILL] = 1;
  2313.                                 add_js_floodfill(js_include_file,canvas_root_id);
  2314.                            }
  2315.                            decimals = find_number_of_digits(precision);/*floodfill(interaction,x,y,[R,G,B,A]) */
  2316.                            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));
  2317.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2318.                            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));
  2319.                            add_to_buffer(tmp_buffer);
  2320.                            break;
  2321.                     default:break;
  2322.                     }
  2323.                 }
  2324.         break;
  2325.         case CLICKFILLMARGE:
  2326.             clickfillmarge = (int) (get_real(infile,1));
  2327.             break;
  2328.         /*
  2329.         @ clickfillmarge int
  2330.         @ default 20 (pixels)
  2331.         @ 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[])
  2332.         */
  2333.         case CLICKFILL:
  2334.         /*
  2335.         @ clickfill fillcolor
  2336.         @ user left mouse click will floodfill the area with fillcolor
  2337.         @ multiple areas may be coloured
  2338.         @ 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)
  2339.         @ the answer will be read as the (x:y) click coordinates per coloured area
  2340.         @ background color of main div may be set by using command "bgcolor color"
  2341.         @ may not be combined with command "userdraw"
  2342.         @ NOTE: recognised colour boundaries are in the "drag canvas" e.g. only for objects that can be set draggable / clickable
  2343.         */
  2344.          fill_color = get_color(infile,1);
  2345.          if(js_function[DRAW_FLOODFILL] != 1 ){/* use only once */
  2346.             js_function[DRAW_FLOODFILL] = 1;
  2347.             add_js_floodfill(js_include_file,canvas_root_id);
  2348.          }
  2349.          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));
  2350.          add_read_canvas(1);
  2351.         break;
  2352.         case SETPIXEL:
  2353.         /*
  2354.         @ setpixel x,y,color
  2355.         @ A "point" with diameter 1 pixel centeres at (x:y) in xrange / yrange
  2356.         @ pixels can not be dragged or clicked
  2357.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2358.         */
  2359.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2360.             for(i=0;i<3;i++){
  2361.                 switch(i){
  2362.                     case 0: double_data[0] = get_real(infile,0); break; /* x */
  2363.                     case 1: double_data[1] = get_real(infile,0); break; /* y  */
  2364.                     case 2: stroke_color = get_color(infile,1);
  2365.                            string_length = snprintf(NULL,0,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2366.                            check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2367.                            snprintf(tmp_buffer,string_length,"draw_setpixel([%f],[%f],\"%s\",%.2f,%d);\n",double_data[0],double_data[1],stroke_color,stroke_opacity,pixelsize);
  2368.                            add_to_buffer(tmp_buffer);
  2369.                            break;
  2370.                     default:break;
  2371.                 }
  2372.             }
  2373.             reset();
  2374.         break;
  2375.         case PIXELSIZE:
  2376.         /*
  2377.         @ pixelsize int
  2378.         @ in case you want to deviate from default pixelsize = 1...
  2379.         */
  2380.             pixelsize = (int) get_real(infile,1);
  2381.         break;
  2382.         case PIXELS:
  2383.         /*
  2384.         @ pixels color,x1,y1,x2,y2,x3,y3...
  2385.         @ Draw  "points" with diameter 1 pixel
  2386.         @ pixels can not be dragged or clicked
  2387.         @ "pixelsize = 1" may be changed by command "pixelsize int"
  2388.         */
  2389.             if( js_function[DRAW_PIXELS] != 1 ){ js_function[DRAW_PIXELS] = 1;}
  2390.             stroke_color=get_color(infile,0);
  2391.             i=0;
  2392.             c=0;
  2393.             while( ! done ){     /* get next item until EOL*/
  2394.                 if(i > MAX_INT - 1){canvas_error("to many points in argument: repeat command multiple times to fit");}
  2395.                 for( c = 0 ; c < 2; c++){
  2396.                     if(c == 0 ){
  2397.                         double_data[i] = get_real(infile,0);
  2398.                         i++;
  2399.                     }
  2400.                     else
  2401.                     {
  2402.                         double_data[i] = get_real(infile,1);
  2403.                         i++;
  2404.                     }
  2405.                 }
  2406.             }
  2407.             decimals = find_number_of_digits(precision);
  2408.             /*  *double_xy2js_array(double xy[],int len,int decimals) */
  2409.             string_length = snprintf(NULL,0,  "draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2410.             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2411.             snprintf(tmp_buffer,string_length,"draw_setpixel(%s,\"%s\",%.2f,%d);\n",double_xy2js_array(double_data,i,decimals),stroke_color,stroke_opacity,pixelsize);
  2412.             add_to_buffer(tmp_buffer);
  2413.             break;
  2414.         case REPLYFORMAT:
  2415.         /*
  2416.         @ replyformat number
  2417.         @ default values should be fine !
  2418.         @ 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>
  2419.         @ note to 'userdraw text,color' : the x / y-values are in pixels ! (this to avoid too lengthy calculations in javascript...)
  2420.         */
  2421.          reply_format = (int) get_real(infile,1);
  2422.         break;
  2423.         case LEGENDCOLORS:
  2424.         /*
  2425.         @ legendcolors color1:color2:color3:...:color_n
  2426.         @ will be used to colour a legend
  2427.         @ make sure the number of colours match the number of legend items
  2428.         @ command 'legend' in case of 'piechart' and 'barchart' will use these colours per default (no need to specify 'legendcolors'
  2429.         */
  2430.             temp = get_string(infile,1);
  2431.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2432.             fprintf(js_include_file,"var legendcolors%d = [\"%s\"];",canvas_root_id,temp);
  2433.             break;
  2434.         case LEGEND:
  2435.         /*
  2436.         @ legend string1:string2:string3....string_n
  2437.         @ will be used to create a legend for a graph
  2438.         @ also see command 'piechart'
  2439.         */
  2440.             temp = get_string(infile,1);
  2441.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2442.             fprintf(js_include_file,"var legend%d = [\"%s\"];",canvas_root_id,temp);
  2443.             break;
  2444.         case XLABEL:
  2445.         /*
  2446.         @ xlabel some_string
  2447.         @ will be used to create a label for the x-axis (label is in quadrant I)
  2448.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2449.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2450.         */
  2451.             temp = get_string(infile,1);
  2452.             fprintf(js_include_file,"var xaxislabel = \"%s\";",temp);
  2453.             break;
  2454.         case YLABEL:
  2455.         /*
  2456.         @ ylabel some_string
  2457.         @ will be used to create a (vertical) label for the y-axis (label is in quadrant I)
  2458.         @ can only be used together with command 'grid'<br />not depending on keywords 'axis' and 'axisnumbering'
  2459.         @ font setting: italic Courier, fontsize will be slightly larger (fontsize + 4)
  2460.         */
  2461.             temp = get_string(infile,1);
  2462.             fprintf(js_include_file,"var yaxislabel = \"%s\";",temp);
  2463.             break;
  2464.         case LINEGRAPH: /* scheme: var linegraph_0 = [ 'stroke_color','line_width','use_dashed' ,'dashtype0','dashtype1','x1','y1',...,'x_n','y_n'];*/
  2465.         /*
  2466.         @ linegraph x1:y1;x2:y2...x_n:y;2
  2467.         @ will plot your data in a graph
  2468.         @ may only to be used together with command 'grid'
  2469.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2470.         @ use command 'legend' to provide an optional legend in right-top-corner
  2471.         @ also see command 'piechart'
  2472.         @ multiple linegraphs may be used in a single plot
  2473.         @ <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>
  2474.         */
  2475.             temp = get_string(infile,1);
  2476.             if( strstr( temp,":") != 0 ){ temp = str_replace(temp,":","\",\""); }
  2477.             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);
  2478.             linegraph_cnt++;
  2479.             reset();
  2480.             break;
  2481.         case CLOCK:
  2482.         /*
  2483.         @ clock x,y,r(px),H,M,S,type hourglass,interactive [ ,H_color,M_color,S_color,background_color,foreground_color ]
  2484.         @ type hourglass:<br />type = 0 : only segments<br />type = 1 : only numbers<br />type = 2 : numbers and segments
  2485.         @ 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
  2486.         @ 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>
  2487.         @ canvasdraw will not check validity of colornames...the javascript console is your best friend
  2488.         @ no combinations with other reply_types allowed, for now
  2489.         @ 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
  2490.         */
  2491.             if( js_function[DRAW_CLOCK] != 1 ){ js_function[DRAW_CLOCK] = 1;}
  2492.  
  2493.         /*    var clock = function(xc,yc,radius,H,M,S,h_color,m_color,s_color,bg_color,fg_color) */
  2494.             for(i=0;i<9;i++){
  2495.              switch(i){
  2496.               case 0: int_data[0] = x2px(get_real(infile,0)); break; /* xc */
  2497.               case 1: int_data[1] = y2px(get_real(infile,0)); break; /* yc */
  2498.               case 2: int_data[2] = get_real(infile,0);break;/* radius in px */
  2499.               case 3: int_data[3] = get_real(infile,0);break;/* hours */
  2500.               case 4: int_data[4] = get_real(infile,0);break;/* minutes */
  2501.               case 5: int_data[5] = get_real(infile,0);break;/* seconds */
  2502.               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 */
  2503.               case 7: int_data[7] = (int)(get_real(infile,0));/* interactive 0,1,2*/
  2504.                 switch(int_data[7]){
  2505.                     case 0:break;
  2506.                     case 1:if(clock_cnt == 0){
  2507.                                 if( reply_format == 0 ){
  2508.                                      reply_format = 18; /* user sets clock */
  2509.                                     /* 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");
  2510.                                      check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2511.                                      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");
  2512.                                      add_to_buffer(tmp_buffer);
  2513.                                     */
  2514.                                      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");
  2515.                                 }
  2516.                                 else
  2517.                                 {
  2518.                                     canvas_error("interactive clock may not be used together with other reply_types...");
  2519.                                 }
  2520.                                 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);
  2521.                              }
  2522.                     break;
  2523.                     case 2:if( reply_format == 0 ){
  2524.                                 reply_format = 19; /* "onclick */
  2525.                                 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 ");
  2526.                             }
  2527.                             else
  2528.                             {
  2529.                                 if( reply_format != 19){
  2530.                                    canvas_error("clickable clock(s) may not be used together with other reply_types...");
  2531.                                  }
  2532.                             }
  2533.                      break;
  2534.                      default: canvas_error("interactive must be set 0,1 or 2");break;
  2535.                 }
  2536.                 break;
  2537.                 case 8:
  2538.                         temp = get_string(infile,1);
  2539.                         if( strstr( temp,",") != 0 ){ temp = str_replace(temp,",","\",\""); }
  2540.                         if( strlen(temp) < 1 ){temp = ",\"\",\"\",\"\",\"\",\"\"";}
  2541.                         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);
  2542.                         check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2543.                         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);
  2544.                         add_to_buffer(tmp_buffer);
  2545.                         clock_cnt++;
  2546.                         break;
  2547.                 default:break;
  2548.              }
  2549.             }
  2550.             break;
  2551.         case BARCHART:
  2552.         /*
  2553.         @ barchart x_1:y_1:color_1:x_2:y_2:color_2:...x_n:y_n:color_n
  2554.         @ will be used to create a legend for bar graph
  2555.         @ may only to be used together with command 'grid'
  2556.         @ can be used together with freestyle x-axis/y-axis texts : see commands 'xaxis' and 'yaxis'
  2557.         @ use command 'legend' to provide an optional legend in right-top-corner
  2558.         @ also see command 'piechart'
  2559.         */
  2560.             temp = get_string(infile,1);
  2561.             if( strstr( temp,":" ) != 0 ){ temp = str_replace(temp,":","\",\""); }
  2562.             fprintf(js_include_file,"var barchart%d = [\"%s\"];",canvas_root_id,temp);
  2563.             reset();
  2564.             break;
  2565.         case PIECHART:
  2566.         /*
  2567.         @ piechart xc,yc,radius,'data+colorlist'
  2568.         @ (xc : yc) center of circle diagram in xrange/yrange
  2569.         @ radius in pixels
  2570.         @ 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
  2571.         @ example data+colorlist : 132:red:23565:green:323:black:234324:orange:23434:yellow:2543:white
  2572.         @ the number of colors must match the number of data.
  2573.         @ use command "opacity 0-255,0-255" to adjust fill_opacity of colours
  2574.         @ 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...
  2575.         */
  2576.             if( js_function[DRAW_PIECHART] != 1 ){ js_function[DRAW_PIECHART] = 1;}
  2577.             for(i=0;i<5;i++){
  2578.                 switch(i){
  2579.                     case 0: int_data[0] = x2px(get_real(infile,0)); break; /* x */
  2580.                     case 1: int_data[1] = y2px(get_real(infile,0)); break; /* y  */
  2581.                     case 2: int_data[2] = (int)(get_real(infile,1));break;/* radius*/
  2582.                     case 3: temp = get_string(infile,1);
  2583.                             if( strstr( temp, ":" ) != 0 ){ temp = str_replace(temp,":","\",\"");}
  2584.                             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);
  2585.                             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
  2586.                             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);
  2587.                             add_to_buffer(tmp_buffer);
  2588.                            break;
  2589.                     default:break;
  2590.                 }
  2591.             }
  2592.             reset();
  2593.         break;
  2594.         case STATUS:
  2595.             fprintf(js_include_file,"\nstatus=\"waiting\";\n");
  2596.             break;
  2597.         case XLOGBASE:
  2598.         /*
  2599.         @ xlogbase number
  2600.         @ sets the logbase number for the x-axis
  2601.         @ default value 10
  2602.         @ use together with commands xlogscale / xylogscale
  2603.         */
  2604.             fprintf(js_include_file,"xlogbase=%d;",(int)(get_real(infile,1)));
  2605.             break;
  2606.         case YLOGBASE:
  2607.         /*
  2608.         @ ylogbase number
  2609.         @ sets the logbase number for the y-axis
  2610.         @ default value 10
  2611.         @ use together with commands ylogscale / xylogscale
  2612.         */
  2613.             fprintf(js_include_file,"ylogbase=%d;",(int)(get_real(infile,1)));
  2614.             break;
  2615.         case XLOGSCALE:
  2616.         /*
  2617.          @ xlogscale ymajor,yminor,majorcolor,minorcolor
  2618.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2619.          @ ymajor is the major step on the y-axis; yminor is the divisor for the y-step
  2620.          @ the linewidth is set using command 'linewidth int'
  2621.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2622.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number'
  2623.          @ 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>
  2624.          @ note: the complete canvas will be used for the 'log paper'
  2625.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2626.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2627.          @ 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')
  2628.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2629.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2630.         */
  2631.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2632.             if( js_function[DRAW_XLOGSCALE] != 1 ){ js_function[DRAW_XLOGSCALE] = 1;}
  2633.             for(i=0;i<4;i++){
  2634.                 switch(i){
  2635.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  2636.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  2637.                     case 2: stroke_color = get_color(infile,0); break;
  2638.                     case 3: fill_color = get_color(infile,1);
  2639.                         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);
  2640.                         tmp_buffer = my_newmem(string_length+1);
  2641.                         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);
  2642.                         fprintf(js_include_file,"use_xlogscale=1;snap_y = %f;snap_x = xlogbase;",double_data[0]/int_data[0]);
  2643.                         add_to_buffer(tmp_buffer);
  2644.                         break;
  2645.                     default:break;
  2646.                 }
  2647.             }
  2648.             break;
  2649.         case YLOGSCALE:
  2650.         /*
  2651.          @ ylogscale xmajor,xminor,majorcolor,minorcolor
  2652.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2653.          @ xmajor is the major step on the x-axis; xminor is the divisor for the x-step
  2654.          @ the linewidth is set using command 'linewidth int'
  2655.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2656.          @ default logbase number = 10 ... when needed , set the logbase number with command 'ylogbase number'
  2657.          @ 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>
  2658.          @ note: the complete canvas will be used for the 'log paper'
  2659.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2660.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2661.          @ 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')
  2662.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2663.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2664.         */
  2665.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2666.             if( js_function[DRAW_YLOGSCALE] != 1 ){ js_function[DRAW_YLOGSCALE] = 1;}
  2667.             for(i=0;i<4;i++){
  2668.                 switch(i){
  2669.                     case 0: double_data[0] = get_real(infile,0);break; /* xmajor */
  2670.                     case 1: int_data[0] = (int) (get_real(infile,0));break; /* xminor */
  2671.                     case 2: stroke_color = get_color(infile,0); break;
  2672.                     case 3: fill_color = get_color(infile,1);
  2673.                         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);
  2674.                         tmp_buffer = my_newmem(string_length+1);
  2675.                         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);
  2676.                         fprintf(js_include_file,"use_ylogscale=1;snap_x = %f;snap_y = ylogbase;",double_data[0]/int_data[0]);
  2677.                         add_to_buffer(tmp_buffer);
  2678.                         break;
  2679.                     default:break;
  2680.                 }
  2681.             }
  2682.             break;
  2683.         case XYLOGSCALE:
  2684.         /*
  2685.          @ xylogscale majorcolor,minorcolor
  2686.          @ the x/y-range are set using commands 'xrange xmin,xmax' and 'yrange ymin,ymax'
  2687.          @ the linewidth is set using command 'linewidth int'
  2688.          @ the opacity of major / minor grid lines is set by command 'opacity [0-255],[0-255]'
  2689.          @ default logbase number = 10 ... when needed , set the logbase number with command 'xlogbase number' and/or 'ylogbase number'
  2690.          @ 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>
  2691.          @ note: the complete canvas will be used for the 'log paper'
  2692.          @ note: userdrawings are done in the log paper, e.g. javascript:read_canvas() will return the real values
  2693.          @ note: command 'mouse color,fontsize' will show the real values in the logpaper.<br />\
  2694.          @ 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')
  2695.          @ note: in case of userdraw , the use of keyword 'userinput_xy' may be handy !
  2696.          @ attention: keyword 'snaptogrid' may not lead to the desired result...
  2697.         */
  2698.             if( js_function[DRAW_GRID] == 1 ){canvas_error("only one type of grid is allowed...");}
  2699.             if( js_function[DRAW_XYLOGSCALE] != 1 ){ js_function[DRAW_XYLOGSCALE] = 1;}
  2700.             for(i=0;i<2;i++){
  2701.                 switch(i){
  2702.                     case 0: stroke_color = get_color(infile,0); break;
  2703.                     case 1: fill_color = get_color(infile,1);
  2704.                         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);
  2705.                         tmp_buffer = my_newmem(string_length+1);
  2706.                         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);
  2707.                         fprintf(js_include_file,"use_xlogscale=1;use_ylogscale=1;snap_x = xlogbase;snap_y = ylogbase;");
  2708.                         add_to_buffer(tmp_buffer);
  2709.                         break;
  2710.                     default:break;
  2711.                 }
  2712.             }
  2713.         break;
  2714.         default:sync_input(infile);
  2715.         break;
  2716.     }
  2717.   }
  2718.   /* we are done parsing script file */
  2719.  
  2720.   /* if needed, add generic draw functions (grid / xml etc) to buffer : these are no draggable shapes / objects  ! */
  2721.   add_javascript_functions(js_function,canvas_root_id);
  2722.    /* add read_canvas() etc functions if needed */
  2723.   if( reply_format > 0 ){ add_read_canvas(reply_format);}
  2724.   if( use_pan_and_zoom == TRUE ){
  2725.   /* in case of zooming ... */
  2726.   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
  2727.  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
  2728.  var ymin_start=ymin;var ymax_start=xmax;\
  2729.  var zoom_x_increment=0;var zoom_y_increment=0;\
  2730.  var pan_x_increment=0;var pan_y_increment=0;\
  2731.  if(use_ylogscale == 0 ){\
  2732.   zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (xmax - xmin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
  2733.  }else{\
  2734.   zoom_x_increment = (xmax - xmin)/20;\
  2735.   pan_x_increment = (xmax - xmin)/20;\
  2736.  };\
  2737.  function start_canvas%d(type){\
  2738.   switch(type){\
  2739.    case 0:xmin = xmin + zoom_x_increment;ymin = ymin + zoom_y_increment;xmax = xmax - zoom_x_increment;ymax = ymax - zoom_y_increment;break;\
  2740.    case 1:xmin = xmin - zoom_x_increment;ymin = ymin - zoom_y_increment;xmax = xmax + zoom_x_increment;ymax = ymax + zoom_y_increment;break;\
  2741.    case 2:xmin = xmin - pan_x_increment;ymin = ymin ;xmax = xmax - pan_x_increment;ymax = ymax;break;\
  2742.    case 3:xmin = xmin + pan_x_increment;ymin = ymin ;xmax = xmax + pan_x_increment;ymax = ymax;break;\
  2743.    case 4:xmin = xmin;ymin = ymin - pan_y_increment ;xmax = xmax;ymax = ymax - pan_y_increment;break;\
  2744.    case 5:xmin = xmin;ymin = ymin + pan_y_increment ;xmax = xmax;ymax = ymax + pan_y_increment;break;\
  2745.    case 6:location.reload();break;\
  2746.    default:break;\
  2747.   };\
  2748.   if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
  2749.   if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
  2750.   try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
  2751.   %s\
  2752.  };\
  2753.  start_canvas%d(333);\
  2754. };\n\
  2755. <!-- end wims_canvas_function -->\n\
  2756. wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
  2757.   }
  2758.   else
  2759.   {
  2760.   /* no zoom, just add buffer */
  2761.   fprintf(js_include_file,"\n<!-- add buffer -->\n\
  2762.  %s\
  2763. };\n\
  2764. <!-- end wims_canvas_function -->\n\
  2765. wims_canvas_function%d();\n",buffer,canvas_root_id);
  2766.   }
  2767. /* done writing the javascript include file */
  2768. fclose(js_include_file);
  2769.  
  2770. }
  2771.  
  2772. /* if using a tooltip, this should always be printed to the *.phtml file, so stdout */
  2773. if(use_tooltip == TRUE){
  2774.   add_js_tooltip(canvas_root_id,tooltip_text,bgcolor,xsize,ysize);
  2775. }
  2776. exit(EXIT_SUCCESS);
  2777. }
  2778. /* end main() */
  2779.  
  2780. /******************************************************************************
  2781. **
  2782. **  sync_input
  2783. **
  2784. **  synchronises input line - reads to end of line, leaving file pointer
  2785. **  at first character of next line.
  2786. **
  2787. **  Used by:
  2788. **  main program - error handling.
  2789. **
  2790. ******************************************************************************/
  2791. void sync_input(FILE *infile)
  2792. {
  2793.         int c = 0;
  2794.  
  2795.         if( c == '\n' || c == ';' ) return;
  2796.         while( ( (c=getc(infile)) != EOF ) && (c != '\n') && (c != '\r') && (c != ';')) ;
  2797.         if( c == EOF ) finished = 1;
  2798.         if( c == '\n' || c == '\r' || c == ';') line_number++;
  2799.         return;
  2800. }
  2801.  
  2802. /******************************************************************************/
  2803.  
  2804. char *str_replace(const char *str, const char *old, const char *new){
  2805. /* http://creativeandcritical.net/str-replace-c/ */
  2806.     if(strlen(str) > MAX_BUFFER){canvas_error("string argument too big");}
  2807.     char *ret, *r;
  2808.     const char *p, *q;
  2809.     size_t oldlen = strlen(old);
  2810.     size_t count = 0;
  2811.     size_t retlen = 0;
  2812.     size_t newlen = strlen(new);
  2813.     if (oldlen != newlen){
  2814.         for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen){
  2815.             count++;
  2816.             retlen = p - str + strlen(p) + count * (newlen - oldlen);
  2817.         }
  2818.     }
  2819.     else
  2820.     {
  2821.         retlen = strlen(str);
  2822.     }
  2823.  
  2824.     if ((ret = malloc(retlen + 1)) == NULL){
  2825.         ret = NULL;
  2826.         canvas_error("string argument is NULL");
  2827.     }
  2828.     else
  2829.     {
  2830.         for (r = ret, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen) {
  2831.             size_t l = q - p;
  2832.             memcpy(r, p, l);
  2833.             r += l;
  2834.             memcpy(r, new, newlen);
  2835.             r += newlen;
  2836.         }
  2837.         strcpy(r, p);
  2838.     }
  2839.     return ret;
  2840. }
  2841.  
  2842. /******************************************************************************/
  2843. /*
  2844. avoid the use of ctypes.h for tolower() toupper();
  2845. it gives trouble in FreeBSD 9.0 / 9.1 when used in a chroot environment (C library bug) : Undefined symbol "_ThreadRuneLocale"
  2846. Upper case -> Lower case : c = c - 'A'+ 'a';
  2847. Lower case ->  Upper case  c = c + 'A'  - 'a';
  2848.  
  2849. int tolower(int c){
  2850.  if(c <= 'Z'){
  2851.   if (c >= 'A'){
  2852.    return c - 'A' + 'a';
  2853.   }
  2854.  }
  2855.  return c;
  2856. }
  2857.  
  2858. int toupper(int c){
  2859.  if(c >= 'a' && c <= 'z'){
  2860.    return c + 'A' - 'a';
  2861.  }
  2862.  return c;
  2863. }
  2864. */
  2865. char *get_color(FILE *infile , int last){
  2866.     int c,i = 0,is_hex = 0;
  2867.     char temp[MAX_COLOR_STRING], *string;
  2868.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',' ) && ( c != ';' ) ){
  2869.         if( i > MAX_COLOR_STRING ){ canvas_error("colour string is too big ... ? ");}
  2870.         if( c == '#' ){
  2871.             is_hex = 1;
  2872.         }
  2873.         if( c != ' '){
  2874.             temp[i]=tolower(c);
  2875.             i++;
  2876.         }
  2877.     }
  2878.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  2879.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  2880.     if( c == EOF ){finished = 1;}
  2881.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  2882.     temp[i]='\0';
  2883.     if( strlen(temp) == 0 ){ canvas_error("expected a colorname or hexnumber, but found nothing !!");}
  2884.     if( is_hex == 1 ){
  2885.         char red[3], green[3], blue[3];
  2886.         red[0]   = toupper(temp[1]); red[1]   = toupper(temp[2]); red[2]   = '\0';
  2887.         green[0] = toupper(temp[3]); green[1] = toupper(temp[4]); green[2] = '\0';
  2888.         blue[0]  = toupper(temp[5]); blue[1]  = toupper(temp[6]); blue[2]  = '\0';
  2889.         int r = (int) strtol(red,   NULL, 16);
  2890.         int g = (int) strtol(green, NULL, 16);
  2891.         int b = (int) strtol(blue,  NULL, 16);
  2892.         string = (char *)my_newmem(12);
  2893.         snprintf(string,11,"%d,%d,%d",r,g,b);
  2894.         return string;
  2895.     }
  2896.     else
  2897.     {
  2898.         string = (char *)my_newmem(sizeof(temp));
  2899.         snprintf(string,sizeof(temp),"%s",temp);
  2900.         for( i = 0; i <= NUMBER_OF_COLORNAMES ; i++ ){
  2901.             if( strcmp( colors[i].name , string ) == 0 ){
  2902.                 return colors[i].rgb;
  2903.             }
  2904.         }
  2905.     }
  2906.     /* not found...return error */
  2907.     free(string);string = NULL;
  2908.     canvas_error("I was expecting a color name or hexnumber...but found nothing.");
  2909.     return NULL;
  2910. }
  2911.  
  2912. char *get_string(FILE *infile,int last){ /* last = 0 : more arguments ; last=1 final argument */
  2913.     int c,i=0;
  2914.     char  temp[MAX_BUFFER], *string;
  2915.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') ){
  2916.         temp[i]=c;
  2917.         i++;
  2918.         if(i > MAX_BUFFER){ canvas_error("string size too big...repeat command to fit string");break;}
  2919.     }
  2920.     if( ( c == '\n' || c == EOF ) && last == 0){canvas_error("expecting more arguments in command");}
  2921.     if( c == '\n') { done = TRUE; line_number++; }
  2922.     if( c == EOF ) {
  2923.         finished = 1;
  2924.         if( last != 1 ){ canvas_error("expected more arguments");}
  2925.     }
  2926.     temp[i]='\0';
  2927.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string, but found nothing !!");}
  2928.     string=(char *)my_newmem(strlen(temp));
  2929.     snprintf(string,sizeof(temp),"%s",temp);
  2930.     return string;
  2931. }
  2932.  
  2933. char *get_string_argument(FILE *infile,int last){  /* last = 0 : more arguments ; last=1 final argument */
  2934.     int c,i=0;
  2935.     char temp[MAX_BUFFER], *string;
  2936.     while(( (c=getc(infile)) != EOF ) && ( c != '\n') && ( c != ',')){
  2937.         temp[i]=c;
  2938.         i++;
  2939.         if(i > MAX_BUFFER){ canvas_error("string size too big...will cut it off");break;}
  2940.     }
  2941.     if( ( c == '\n' || c == EOF) && last == 0){canvas_error("expecting more arguments in command");}
  2942.     if( c == '\n') { line_number++; }
  2943.     if( c == EOF ) {finished = 1;}
  2944.     if( finished == 1 && last != 1 ){ canvas_error("expected more arguments");}
  2945.     temp[i]='\0';
  2946.     if( strlen(temp) == 0 ){ canvas_error("expected a word or string (without comma) , but found nothing !!");}
  2947.     string=(char *)my_newmem(sizeof(temp));
  2948.     snprintf(string,sizeof(temp),"%s",temp);
  2949.     done = TRUE;
  2950.     return string;
  2951. }
  2952.  
  2953. double get_real(FILE *infile, int last){ /* accept anything that looks like an number ?  last = 0 : more arguments ; last=1 final argument */
  2954.     int c,i=0,found_calc = 0;
  2955.     double y;
  2956.     char tmp[MAX_INT];
  2957.     while(( (c=getc(infile)) != EOF ) && ( c != ',') && (c != '\n') && ( c != ';')){
  2958.      if( c != ' ' ){
  2959.      /*
  2960.      libmatheval will segfault when for example: "xrange -10,+10" or "xrange -10,10+" is used
  2961.      We will check after assert() if it's a NULL pointer...and exit program via :
  2962.      canvas_error("I'm having trouble parsing your \"expression\" ");
  2963.      */
  2964.       if( i == 0 &&  c == '+' ){
  2965.        continue;
  2966.       }
  2967.       else
  2968.       {
  2969.        if(canvas_iscalculation(c) != 0){
  2970.         found_calc = 1;
  2971.         c = tolower(c);
  2972.        }
  2973.        tmp[i] = c;
  2974.        i++;
  2975.       }
  2976.      }
  2977.      if( i > MAX_INT - 1){canvas_error("number too large");}
  2978.     }
  2979.     if( ( c == '\n' || c == EOF || c == ';' ) && last == 0){canvas_error("expecting more arguments in command");}
  2980.     if( c == '\n' || c == ';' ){ done = TRUE; line_number++; }
  2981.     if( c == EOF ){done = TRUE ; finished = 1;}
  2982.     tmp[i]='\0';
  2983.     if( strlen(tmp) == 0 ){canvas_error("expected a number , but found nothing !!");}
  2984.     if( found_calc == 1 ){ /* use libmatheval to calculate 2*pi/3 */
  2985.      void *f = eval_create(tmp);
  2986.      assert(f);if( f == NULL ){canvas_error("I'm having trouble parsing your \"expression\" ") ;}
  2987.      y = eval_x(f, 1);
  2988.      /* if function is bogus; y = 1 : so no core dumps */
  2989.      eval_destroy(f);
  2990.     }
  2991.     else
  2992.     {
  2993.      y = atof(tmp);
  2994.     }
  2995.     return y;
  2996. }
  2997. void canvas_error(char *msg){
  2998.     fprintf(stdout,"\n</script><hr /><span style=\"color:red\">FATAL syntax error:line %d : %s</span><hr />",line_number-1,msg);
  2999.     finished = 1;
  3000.     exit(EXIT_SUCCESS);
  3001. }
  3002.  
  3003.  
  3004. /* convert x/y coordinates to pixel */
  3005. int x2px(double x){
  3006.  return x*xsize/(xmax - xmin) -  xsize*xmin/(xmax - xmin);
  3007. }
  3008.  
  3009. int y2px(double y){
  3010.  return -1*y*ysize/(ymax - ymin) + ymax*ysize/(ymax - ymin);
  3011. }
  3012.  
  3013. double px2x(int x){
  3014.  return (x*(xmax - xmin)/xsize + xmin);
  3015. }
  3016. double px2y(int y){
  3017.  return (y*(ymax - ymin)/ysize + ymin);
  3018. }
  3019.  
  3020. void add_to_buffer(char *tmp){
  3021.  if( tmp == NULL || tmp == 0 ){ canvas_error("nothing to add_to_buffer()...");}
  3022.  /*  do we have enough space left in buffer[MAX_BUFFER] ? */
  3023.  int space_left = (int) (sizeof(buffer) - strlen(buffer));
  3024.  if( space_left > strlen(tmp)){
  3025.   strncat(buffer,tmp,space_left - 1);/* add safely "tmp" to the string buffer */
  3026.  }
  3027.  else
  3028.  {
  3029.   canvas_error("buffer is too big\n");
  3030.  }
  3031.  tmp = NULL;free(tmp);
  3032.  return;
  3033. }
  3034.  
  3035. void reset(){
  3036.  if(use_filled == TRUE){use_filled = FALSE;}
  3037.  if(use_dashed == TRUE){use_dashed = FALSE;}
  3038.  if(use_translate == TRUE){use_translate = FALSE;}
  3039.  if(use_rotate == TRUE){use_rotate = FALSE;}
  3040.  onclick = 0;
  3041. }
  3042.  
  3043.  
  3044.  
  3045. /* What reply format in read_canvas();
  3046.  
  3047. note:if userdraw is combined with inputfields...every "userdraw" based answer will append "\n" and  inputfield.value()
  3048. 1 = x1,x2,x3,x4....x_n
  3049.     y1,y2,y3,y4....y_n
  3050.  
  3051.     x/y in pixels
  3052.  
  3053. 2 = x1,x2,x3,x4....x_n
  3054.     y1,y2,y3,y4....y_n
  3055.     x/y in  xrange / yrange coordinate system
  3056.  
  3057. 3 = x1,x2,x3,x4....x_n
  3058.     y1,y2,y3,y4....y_n
  3059.     r1,r2,r3,r4....r_n
  3060.  
  3061.     x/y in pixels
  3062.     r in pixels
  3063.  
  3064. 4 = x1,x2,x3,x4....x_n
  3065.     y1,y2,y3,y4....y_n
  3066.     r1,r2,r3,r4....r_n
  3067.  
  3068.     x/y in  xrange / yrange coordinate system
  3069.     r in pixels
  3070.  
  3071. 5 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3072.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3073.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3074.     By1,By2,By3,By4....By_n
  3075.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3076.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3077.     ....
  3078.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3079.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3080.  
  3081.     x/y in pixels
  3082.  
  3083. 6 = Ax1,Ax2,Ax3,Ax4....Ax_n
  3084.     Ay1,Ay2,Ay3,Ay4....Ay_n
  3085.     Bx1,Bx2,Bx3,Bx4....Bx_n
  3086.     By1,By2,By3,By4....By_n
  3087.     Cx1,Cx2,Cx3,Cx4....Cx_n
  3088.     Cy1,Cy2,Cy3,Cy4....Cy_n
  3089.     ....
  3090.     Zx1,Zx2,Zx3,Zx4....Zx_n
  3091.     Zy1,Zy2,Zy3,Zy4....Zy_n
  3092.  
  3093.     x/y in  xrange / yrange coordinate system
  3094.  
  3095. 7 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3096.  
  3097.     x/y in pixels
  3098.  
  3099. 8 = x1:y1,x2:y2,x3:y3,x4:y4...x_n:y_n
  3100.  
  3101.     x/y in  xrange / yrange coordinate system
  3102.  
  3103. 9 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3104.  
  3105.     x/y in pixels
  3106.  
  3107. 10 = x1:y1:r1,x2:y2:r2,x3:y3:r3,x4:y4:r3...x_n:y_n:r_n
  3108.  
  3109.     x/y in  xrange / yrange coordinate system
  3110.  
  3111. 11 = Ax1,Ay1,Ax2,Ay2
  3112.      Bx1,By1,Bx2,By2
  3113.      Cx1,Cy1,Cx2,Cy2
  3114.      Dx1,Dy1,Dx2,Dy2
  3115.      ......
  3116.      Zx1,Zy1,Zx2,Zy2
  3117.  
  3118.     x/y in  xrange / yrange coordinate system
  3119.  
  3120. 12 = Ax1,Ay1,Ax2,Ay2
  3121.      Bx1,By1,Bx2,By2
  3122.      Cx1,Cy1,Cx2,Cy2
  3123.      Dx1,Dy1,Dx2,Dy2
  3124.      ......
  3125.      Zx1,Zy1,Zx2,Zy2
  3126.  
  3127.     x/y in pixels
  3128.  
  3129. 13 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2,Cx1:Cy1:Cx2:Cy2,Dx1:Dy1:Dx2:Dy2, ... ,Zx1:Zy1:Zx2:Zy2
  3130.  
  3131.     x/y in  xrange / yrange coordinate system
  3132. 14 = Ax1:Ay1:Ax2:Ay2,Bx1:By1:Bx2:By2....Zx1:Zy1:Zx2:Zy2
  3133.     x/y in pixels
  3134. 15 = reply from inputfields,textareas
  3135.     reply1,reply2,reply3,...,reply_n
  3136.  
  3137. 16 = read mathml inputfields only
  3138.  
  3139. 17 = read userdraw text only (x1:y1:text1,x2:y2:text2...x_n:y_n:text_n
  3140.  when ready : calculate size_t of string via snprintf(NULL,0,"blah blah...");
  3141.  
  3142. 18 = read clock(s) : H1:M1:S1,H2:M2:S2,...H_n:M_n:S_n
  3143. 19 = return clicked object number (analogue to shape-library onclick)
  3144. 20 = return x/y-data in x-range/y-range of all 'draggable' images
  3145. 21 = return verbatim coordinates (x1:y1) (x2:y2)...(x_n:y_n)
  3146. 22 = array : x1,y1,x2,y2,x3,y3,x4,y4...x_n,y_n
  3147.     x/y in  xrange / yrange coordinate system
  3148. 23 = answertype for a polyline : remove multiple occurences  due to reclick on a point to create next polyline segment
  3149. */
  3150.  
  3151.  
  3152. void add_read_canvas(int type_reply){
  3153. /* just 1 reply type allowed */
  3154. switch(type_reply){
  3155. /*  TO DO
  3156. !!!!  NEED TO SIMPLIFY !!!!
  3157. answers may have:
  3158. x-values,y-values,r-values,input-fields,mathml-inputfields,text-typed answers
  3159. */
  3160.     case 1: fprintf(js_include_file,"\
  3161. \n<!-- begin function 1 read_canvas() -->\n\
  3162. function read_canvas(){\
  3163. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3164. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3165.  var p = 0;var input_reply = new Array();\
  3166.  if( document.getElementById(\"canvas_input0\")){\
  3167.   var t = 0;\
  3168.   while(document.getElementById(\"canvas_input\"+t)){\
  3169.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3170.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3171.     p++;\
  3172.    };\
  3173.    t++;\
  3174.   };\
  3175.  };\
  3176.  if( typeof userdraw_text != 'undefined' ){\
  3177.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply + \"\\n\"+userdraw_text;\
  3178.  }\
  3179.  else\
  3180.  {\
  3181.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+input_reply;\
  3182.  }\
  3183. }\
  3184. else\
  3185. {\
  3186.  if( typeof userdraw_text != 'undefined' ){\
  3187.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_text;\
  3188.  }\
  3189.  else\
  3190.  {\
  3191.   return userdraw_x+\"\\n\"+userdraw_y;\
  3192.  }\
  3193. };\
  3194. };\
  3195. this.read_canvas = read_canvas;\n\
  3196. <!-- end function 1 read_canvas() -->");
  3197.     break;
  3198.     case 2: fprintf(js_include_file,"\
  3199. \n<!-- begin function 2 read_canvas() -->\n\
  3200. function read_canvas(){\
  3201. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3202. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3203. while(userdraw_x[p]){\
  3204.  reply_x[p] = px2x(userdraw_x[p]);\
  3205.  reply_y[p] = px2y(userdraw_y[p]);\
  3206.  p++;\
  3207. };\
  3208. if(p == 0){alert(\"nothing drawn...\");return;};\
  3209. if( document.getElementById(\"canvas_input0\")){\
  3210.  var p = 0;var input_reply = new Array();\
  3211.  if( document.getElementById(\"canvas_input0\")){\
  3212.   var t = 0;\
  3213.   while(document.getElementById(\"canvas_input\"+t)){\
  3214.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3215.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3216.     p++;\
  3217.    };\
  3218.    t++;\
  3219.   };\
  3220.  };\
  3221.  if( typeof userdraw_text != 'undefined' ){\
  3222.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3223.  }\
  3224.  else\
  3225.  {\
  3226.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  3227.  }\
  3228. }\
  3229. else\
  3230. {\
  3231.  if( typeof userdraw_text != 'undefined' ){\
  3232.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  3233.  }\
  3234.  else\
  3235.  {\
  3236.   return reply_x+\"\\n\"+reply_y;\
  3237.  };\
  3238. };\
  3239. };\
  3240. this.read_canvas = read_canvas;\n\
  3241. <!-- end function 2 read_canvas() -->");
  3242.     break;
  3243.     case 3: fprintf(js_include_file,"\
  3244. \n<!-- begin function 3 read_canvas() -->\n\
  3245. function read_canvas(){\
  3246. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3247. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3248.  var p = 0;var input_reply = new Array();\
  3249.  if( document.getElementById(\"canvas_input0\")){\
  3250.   var t = 0;\
  3251.   while(document.getElementById(\"canvas_input\"+t)){\
  3252.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3253.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3254.     p++;\
  3255.    };\
  3256.    t++;\
  3257.   };\
  3258.  };\
  3259.  if( typeof userdraw_text != 'undefined' ){\
  3260.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3261.  }\
  3262.  else\
  3263.  {\
  3264.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3265.  }\
  3266. }\
  3267. else\
  3268. {\
  3269.  if( typeof userdraw_text != 'undefined' ){\
  3270.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius+\"\\n\"+userdrawW_text;\
  3271.  }\
  3272.  else\
  3273.  {\
  3274.   return userdraw_x+\"\\n\"+userdraw_y+\"\\n\"+userdraw_radius;\
  3275.  }\
  3276. }\
  3277. };\
  3278. this.read_canvas = read_canvas;\n\
  3279. <!-- end function 3 read_canvas() -->");
  3280.     break;
  3281.     case 4: fprintf(js_include_file,"\
  3282. \n<!-- begin function 4 read_canvas() -->\n\
  3283. function read_canvas(){\
  3284. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3285. while(userdraw_x[p]){\
  3286.  reply_x[p] = px2x(userdraw_x[p]);\
  3287.  reply_y[p] = px2y(userdraw_y[p]);\
  3288.  p++;\
  3289. };\
  3290. if(p == 0){alert(\"nothing drawn...\");return;};\
  3291. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3292.  var p = 0;var input_reply = new Array();\
  3293.  if( document.getElementById(\"canvas_input0\")){\
  3294.   var t = 0;\
  3295.   while(document.getElementById(\"canvas_input\"+t)){\
  3296.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3297.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3298.     p++;\
  3299.    };\
  3300.    t++;\
  3301.   };\
  3302.  };\
  3303.  if( typeof userdraw_text != 'undefined' ){\
  3304.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3305.  }\
  3306.  else\
  3307.  {\
  3308.   return reply_x+\"\\n\"+reply_y +\"\\n\"+userdraw_radius+\"\\n\"+input_reply;\
  3309.  }\
  3310. }\
  3311. else\
  3312. {\
  3313.  if( typeof userdraw_text != 'undefined' ){\
  3314.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius+\"\\n\"+userdraw_text;\
  3315.  }\
  3316.  else\
  3317.  {\
  3318.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_radius;\
  3319.  }\
  3320. };\
  3321. };\
  3322. this.read_canvas = read_canvas;\n\
  3323. <!-- end function 4 read_canvas() -->");
  3324.     break;
  3325.     /*
  3326.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3327.         used for userdraw multiple paths
  3328.     */
  3329.     case 5: fprintf(js_include_file,"\
  3330. \n<!-- begin function 5 read_canvas() -->\n\
  3331. function read_canvas(){\
  3332. var p = 0;\
  3333. var reply = \"\";\
  3334. for(p = 0; p < userdraw_x.length;p++){\
  3335.  if(userdraw_x[p] != null ){\
  3336.   reply = reply + userdraw_x[p]+\"\\n\"+userdraw_y[p]+\"\\n\";\
  3337.  };\
  3338. };\
  3339. if(p == 0){alert(\"nothing drawn...\");return;};\
  3340. userdraw_x = [];userdraw_y = [];\
  3341. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3342.  var p = 0;var input_reply = new Array();\
  3343.  if( document.getElementById(\"canvas_input0\")){\
  3344.   var t = 0;\
  3345.   while(document.getElementById(\"canvas_input\"+t)){\
  3346.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3347.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3348.     p++;\
  3349.    };\
  3350.    t++;\
  3351.   };\
  3352.  };\
  3353.  if( typeof userdraw_text != 'undefined' ){\
  3354.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3355.  }\
  3356.  else\
  3357.  {\
  3358.   return reply +\"\\n\"+input_reply;\
  3359.  }\
  3360. }\
  3361. else\
  3362. {\
  3363.  if( typeof userdraw_text != 'undefined' ){\
  3364.   return reply+\"\\n\"+userdraw_text;\
  3365.  }\
  3366.  else\
  3367.  {\
  3368.   return reply;\
  3369.  }\
  3370. };\
  3371. };\
  3372. this.read_canvas = rdad_canvas;\n\
  3373. <!-- end function 5 read_canvas() -->");
  3374.     break;
  3375.     /*
  3376.         attention: we reset userdraw_x / userdraw_y  : because  userdraw_x = [][] userdraw_y = [][]
  3377.         used for userdraw multiple paths
  3378.     */
  3379.     case 6: fprintf(js_include_file,"\
  3380. \n<!-- begin function 6 read_canvas() -->\n\
  3381. function read_canvas(){\
  3382. var p = 0;\
  3383. var reply = \"\";\
  3384. var tmp_x = new Array();\
  3385. var tmp_y = new Array();\
  3386. for(p = 0 ; p < userdraw_x.length; p++){\
  3387.  tmp_x = userdraw_x[p];\
  3388.  tmp_y = userdraw_y[p];\
  3389.  if(tmp_x != null){\
  3390.   for(var i = 0 ; i < tmp_x.length ; i++){\
  3391.    tmp_x[i] = px2x(tmp_x[i]);\
  3392.    tmp_y[i] = px2y(tmp_y[i]);\
  3393.   };\
  3394.   reply = reply + tmp_x + \"\\n\" + tmp_y +\"\\n\";\
  3395.  };\
  3396. };\
  3397. if(p == 0){alert(\"nothing drawn...\");return;};\
  3398. userdraw_x = [];userdraw_y = [];\
  3399. if( document.getElementById(\"canvas_input0\") ){\
  3400.  var p = 0;var input_reply = new Array();\
  3401.  if( document.getElementById(\"canvas_input0\")){\
  3402.   var t = 0;\
  3403.   while(document.getElementById(\"canvas_input\"+t)){\
  3404.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3405.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3406.     p++;\
  3407.    };\
  3408.    t++;\
  3409.   };\
  3410.  };\
  3411.  if( typeof userdraw_text != 'undefined' ){\
  3412.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3413.  }\
  3414.  else\
  3415.  {\
  3416.   return reply +\"\\n\"+input_reply;\
  3417.  }\
  3418. }\
  3419. else\
  3420. {\
  3421.  if( typeof userdraw_text != 'undefined' ){\
  3422.   return reply +\"\\n\"+userdraw_text;\
  3423.  }\
  3424.  else\
  3425.  {\
  3426.   return reply;\
  3427.  }\
  3428. };\
  3429. };\
  3430. this.read_canvas = read_canvas;\n\
  3431. <!-- end function 6 read_canvas() -->");
  3432.     break;
  3433.     case 7: fprintf(js_include_file,"\
  3434. \n<!-- begin function 7 read_canvas() -->\n\
  3435. function read_canvas(){\
  3436. var reply = new Array();\
  3437. var p = 0;\
  3438. while(userdraw_x[p]){\
  3439.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p];\
  3440.  p++;\
  3441. };\
  3442. if(p == 0){alert(\"nothing drawn...\");return;};\
  3443. if( document.getElementById(\"canvas_input0\") ){\
  3444.  var p = 0;var input_reply = new Array();\
  3445.  if( document.getElementById(\"canvas_input0\")){\
  3446.   var t = 0;\
  3447.   while(document.getElementById(\"canvas_input\"+t)){\
  3448.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3449.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3450.     p++;\
  3451.    };\
  3452.    t++;\
  3453.   };\
  3454.  };\
  3455.  if( typeof userdraw_text != 'undefined' ){\
  3456.   return reply+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3457.  }\
  3458.  else\
  3459.  {\
  3460.   return reply+\"\\n\"+input_reply;\
  3461.  }\
  3462. };\
  3463. else\
  3464. {\
  3465.  if( typeof userdraw_text != 'undefined' ){\
  3466.   return reply+\"\\n\"+userdraw_text;\
  3467.  }\
  3468.  else\
  3469.  {\
  3470.   return reply;\
  3471.  }\
  3472. };\
  3473. };\
  3474. this.read_canvas = read_canvas;\n\
  3475. <!-- end function 7 read_canvas() -->");
  3476.     break;
  3477.     case 8: fprintf(js_include_file,"\
  3478. \n<!-- begin function 8 read_canvas() -->\n\
  3479. function read_canvas(){\
  3480. var reply = new Array();\
  3481. var p = 0;\
  3482. while(userdraw_x[p]){\
  3483.  reply[p] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]);\
  3484.  p++;\
  3485. };\
  3486. if(p == 0){alert(\"nothing drawn...\");return;};\
  3487. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3488.  var p = 0;var input_reply = new Array();\
  3489.  if( document.getElementById(\"canvas_input0\")){\
  3490.   var t = 0;\
  3491.   while(document.getElementById(\"canvas_input\"+t)){\
  3492.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3493.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3494.     p++;\
  3495.    };\
  3496.    t++;\
  3497.   };\
  3498.  };\
  3499.  if( typeof userdraw_text != 'undefined' ){\
  3500.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3501.  }\
  3502.  else\
  3503.  {\
  3504.   return reply +\"\\n\"+input_reply;\
  3505.  }\
  3506. }\
  3507. else\
  3508. {\
  3509.  if( typeof userdraw_text != 'undefined' ){\
  3510.   return reply +\"\\n\"+userdraw_text;\
  3511.  }\
  3512.  else\
  3513.  {\
  3514.   return reply;\
  3515.  }\
  3516. };\
  3517. };\
  3518. this.read_canvas = read_canvas;\n\
  3519. <!-- end function 8 read_canvas() -->");
  3520.     break;
  3521.     case 9: fprintf(js_include_file,"\
  3522. \n<!-- begin function 9 read_canvas() -->\n\
  3523. function read_canvas(){\
  3524. var reply = new Array();\
  3525. var p = 0;\
  3526. while(userdraw_x[p]){\
  3527.  reply[p] = userdraw_x[p] +\":\" + userdraw_y[p] + \":\" + userdraw_radius[p];\
  3528.  p++;\
  3529. };\
  3530. if(p == 0){alert(\"nothing drawn...\");return;};\
  3531. if( document.getElementById(\"canvas_input0\") ){\
  3532.  var p = 0;var input_reply = new Array();\
  3533.  if( document.getElementById(\"canvas_input0\")){\
  3534.   var t = 0;\
  3535.   while(document.getElementById(\"canvas_input\"+t)){\
  3536.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3537.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3538.     p++;\
  3539.    };\
  3540.    t++;\
  3541.   };\
  3542.  };\
  3543.  if( typeof userdraw_text != 'undefined' ){\
  3544.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3545.  }\
  3546.  else\
  3547.  {\
  3548.   return reply +\"\\n\"+input_reply;\
  3549.  }\
  3550. }\
  3551. else\
  3552. {\
  3553.  if( typeof userdraw_text != 'undefined' ){\
  3554.   return reply +\"\\n\"+userdraw_text;\
  3555.  }\
  3556.  else\
  3557.  {\
  3558.   return reply;\
  3559.  }\
  3560. };\
  3561. };\
  3562. this.read_canvas = read_canvas;\n\
  3563. <!-- end function 9 read_canvas() -->");
  3564.     break;
  3565.     case 10: fprintf(js_include_file,"\
  3566. \n<!-- begin function 10 read_canvas() -->\n\
  3567. function read_canvas(){\
  3568. var reply = new Array();\
  3569. var p = 0;\
  3570. while(userdraw_x[p]){\
  3571.  reply[p] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]) +\":\" + userdraw_radius[p];\
  3572.  p++;\
  3573. };\
  3574. if(p == 0){alert(\"nothing drawn...\");return;};\
  3575. if( document.getElementById(\"canvas_input0\") ){\
  3576.  var p = 0;var input_reply = new Array();\
  3577.  if( document.getElementById(\"canvas_input0\")){\
  3578.   var t = 0;\
  3579.   while(document.getElementById(\"canvas_input\"+t)){\
  3580.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3581.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3582.     p++;\
  3583.    };\
  3584.    t++;\
  3585.   };\
  3586.  };\
  3587.  if( typeof userdraw_text != 'undefined' ){\
  3588.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3589.  }\
  3590.  else\
  3591.  {\
  3592.   return reply +\"\\n\"+input_reply;\
  3593.  }\
  3594. }\
  3595. else\
  3596. {\
  3597.  if( typeof userdraw_text != 'undefined' ){\
  3598.   return reply +\"\\n\"+userdraw_text;\
  3599.  }\
  3600.  else\
  3601.  {\
  3602.   return reply;\
  3603.  }\
  3604. };\
  3605. };\
  3606. this.read_canvas = read_canvas;\n\
  3607. <!-- end function 10 read_canvas() -->");
  3608.     break;
  3609.     case 11: fprintf(js_include_file,"\
  3610. \n<!-- begin function 11 read_canvas() -->\n\
  3611. function read_canvas(){\
  3612. var reply = \"\";\
  3613. var p = 0;\
  3614. while(userdraw_x[p]){\
  3615.  reply = reply + px2x(userdraw_x[p]) +\",\" + px2y(userdraw_y[p]) +\",\" + px2x(userdraw_x[p+1]) +\",\" + px2y(userdraw_y[p+1]) +\"\\n\" ;\
  3616.  p = p+2;\
  3617. };\
  3618. if(p == 0){alert(\"nothing drawn...\");return;};\
  3619. if( document.getElementById(\"canvas_input0\") || document.getElementById(\"mathml0\") ){\
  3620.  var p = 0;var input_reply = new Array();\
  3621.  if( document.getElementById(\"canvas_input0\")){\
  3622.   var t = 0;\
  3623.   while(document.getElementById(\"canvas_input\"+t)){\
  3624.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3625.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3626.     p++;\
  3627.    };\
  3628.    t++;\
  3629.   };\
  3630.  };\
  3631.  if( typeof userdraw_text != 'undefined' ){\
  3632.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3633.  }\
  3634.  else\
  3635.  {\
  3636.   return reply +\"\\n\"+input_reply;\
  3637.  }\
  3638. }\
  3639. else\
  3640. {\
  3641.  if( typeof userdraw_text != 'undefined' ){\
  3642.   return reply +\"\\n\"+userdraw_text;\
  3643.  }\
  3644.  else\
  3645.  {\
  3646.   return reply;\
  3647.  }\
  3648. };\
  3649. };\
  3650. this.read_canvas = read_canvas;\n\
  3651. <!-- end function 11 read_canvas() -->");
  3652.     break;
  3653.     case 12: fprintf(js_include_file,"\
  3654. \n<!-- begin function 12 read_canvas() -->\n\
  3655. function read_canvas(){\
  3656. var reply = \"\";\
  3657. var p = 0;\
  3658. for(p = 0; p< userdraw_x.lenght;p = p+2){\
  3659.  if(userdraw_x[p] != null){\
  3660.    reply = reply + userdraw_x[p] +\",\" + userdraw_y[p] +\",\" + userdraw_x[p+1] +\",\" + userdraw_y[p+1] +\"\\n\" ;\
  3661.  };\
  3662. };\
  3663. if(p == 0){alert(\"nothing drawn...\");return;};\
  3664. if( document.getElementById(\"canvas_input0\") ){\
  3665.  var p = 0;var input_reply = new Array();\
  3666.  if( document.getElementById(\"canvas_input0\")){\
  3667.   var t = 0;\
  3668.   while(document.getElementById(\"canvas_input\"+t)){\
  3669.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3670.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3671.     p++;\
  3672.    };\
  3673.    t++;\
  3674.   };\
  3675.  };\
  3676.  if( typeof userdraw_text != 'undefined' ){\
  3677.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3678.  }\
  3679.  else\
  3680.  {\
  3681.   return reply +\"\\n\"+input_reply;\
  3682.  }\
  3683. }\
  3684. else\
  3685. {\
  3686.  if( typeof userdraw_text != 'undefined' ){\
  3687.   return reply +\"\\n\"+userdraw_text\
  3688.  }\
  3689.  else\
  3690.  {\
  3691.   return reply;\
  3692.  }\
  3693. };\
  3694. };\
  3695. this.read_canvas = read_canvas;\n\
  3696. <!-- end function 12 read_canvas() -->");
  3697.     break;
  3698.     case 13: fprintf(js_include_file,"\
  3699. \n<!-- begin function 13 read_canvas() -->\n\
  3700. function read_canvas(){\
  3701. var reply = new Array();\
  3702. var p = 0;var i = 0;\
  3703. while(userdraw_x[p]){\
  3704.  reply[i] = px2x(userdraw_x[p]) +\":\" + px2y(userdraw_y[p]) +\":\" + px2x(userdraw_x[p+1]) +\":\" + px2y(userdraw_y[p+1]);\
  3705.  p = p+2;i++;\
  3706. };\
  3707. if(p == 0){alert(\"nothing drawn...\");return;};\
  3708. if( document.getElementById(\"canvas_input0\") ){\
  3709.  var p = 0;var input_reply = new Array();\
  3710.  if( document.getElementById(\"canvas_input0\")){\
  3711.   var t = 0;\
  3712.   while(document.getElementById(\"canvas_input\"+t)){\
  3713.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3714.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3715.     p++;\
  3716.    };\
  3717.    t++;\
  3718.   };\
  3719.  };\
  3720.  if( typeof userdraw_text != 'undefined' ){\
  3721.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3722.  }\
  3723.  else\
  3724.  {\
  3725.   return reply +\"\\n\"+input_reply;\
  3726.  }\
  3727. }\
  3728. else\
  3729. {\
  3730.  if( typeof userdraw_text != 'undefined' ){\
  3731.   return reply +\"\\n\"+userdraw_text\
  3732.  }\
  3733.  else\
  3734.  {\
  3735.   return reply;\
  3736.  }\
  3737. };\
  3738. };\
  3739. this.read_canvas = read_canvas;\n\
  3740. <!-- end function 13 read_canvas() -->");
  3741.     break;
  3742.     case 14: fprintf(js_include_file,"\
  3743. \n<!-- begin function 14 read_canvas() -->\n\
  3744. function read_canvas(){\
  3745. var reply = new Array();\
  3746. var p = 0;var i = 0;\
  3747. while(userdraw_x[p]){\
  3748.  reply[i] = userdraw_x[p] +\":\" + userdraw_y[p] +\":\" + userdraw_x[p+1] +\":\" + userdraw_y[p+1];\
  3749.  p = p+2;i++;\
  3750. };\
  3751. if(p == 0){alert(\"nothing drawn...\");return;};\
  3752. if( document.getElementById(\"canvas_input0\") ){\
  3753.  var p = 0;var input_reply = new Array();\
  3754.  if( document.getElementById(\"canvas_input0\")){\
  3755.   var t = 0;\
  3756.   while(document.getElementById(\"canvas_input\"+t)){\
  3757.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3758.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3759.     p++;\
  3760.    };\
  3761.    t++;\
  3762.   };\
  3763.  };\
  3764.  if( typeof userdraw_text != 'undefined' ){\
  3765.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3766.  }\
  3767.  else\
  3768.  {\
  3769.   return reply +\"\\n\"+input_reply;\
  3770.  }\
  3771. }\
  3772. else\
  3773. {\
  3774.  if( typeof userdraw_text != 'undefined' ){\
  3775.   return reply +\"\\n\"+userdraw_text;\
  3776.  }\
  3777.  else\
  3778.  {\
  3779.   return reply;\
  3780.  }\
  3781. };\
  3782. };\
  3783. this.read_canvas = read_canvas;\n\
  3784. <!-- end function 14 read_canvas() -->");
  3785.     break;
  3786.     case 15: fprintf(js_include_file,"\
  3787. \n<!-- begin function 15  read_canvas() -->\n\
  3788. function read_canvas(){\
  3789. var input_reply = new Array();\
  3790. var p = 0;\
  3791. if( document.getElementById(\"canvas_input0\")){\
  3792.  var t = 0;\
  3793.  while(document.getElementById(\"canvas_input\"+t)){\
  3794.   if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3795.    input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3796.    p++;\
  3797.   };\
  3798.   t++;\
  3799.  };\
  3800. };\
  3801. if( typeof userdraw_text != 'undefined' ){\
  3802.   return input_reply +\"\\n\"+userdraw_text;\
  3803. }\
  3804. else\
  3805. {\
  3806.  return input_reply;\
  3807. };\
  3808. };\
  3809. this.read_canvas = read_canvas;\n\
  3810. <!-- end function 15 read_canvas() -->");
  3811.     break;
  3812.     case 16: fprintf(js_include_file,"\
  3813. \n<!-- begin function 16 read_mathml() -->\n\
  3814. function read_mathml(){\
  3815. var reply = new Array();\
  3816. var p = 0;\
  3817. if( document.getElementById(\"mathml0\")){\
  3818.  while(document.getElementById(\"mathml\"+p)){\
  3819.   reply[p] = document.getElementById(\"mathml\"+p).value;\
  3820.   p++;\
  3821.  };\
  3822. };\
  3823. return reply;\
  3824. };\
  3825. this.read_mathml = read_mathml;\n\
  3826. <!-- end function 16 read_mathml() -->");
  3827.     break;
  3828.     case 17:  fprintf(js_include_file,"\
  3829. \n<!-- begin function 17 read_canvas() -->\n\
  3830. function read_canvas(){\
  3831. if( userdraw_text.length == 0){alert(\"no text typed...\");return;}\
  3832. return userdraw_text;\
  3833. };\
  3834. this.read_canvas = read_canvas;\n\
  3835. <!-- end function 17 read_canvas() -->");
  3836.     break;
  3837.     case 18: fprintf(js_include_file,"\
  3838. \n<!-- begin function 18 read_canvas() -->\n\
  3839. function read_canvas(){\
  3840. var p = 0;\
  3841. var reply = new Array();\
  3842. var name;\
  3843. var t = true;\
  3844. while(t){\
  3845.  try{ name = eval('clocks'+p);\
  3846.  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;};\
  3847. };\
  3848. if( p == 0){alert(\"clock(s) not modified...\");return;}\
  3849. return reply;\
  3850. };\
  3851. this.read_canvas = read_canvas;\n\
  3852. <!-- end function 18 read_canvas() -->");
  3853.     break;
  3854.     case 19: fprintf(js_include_file,"\
  3855. \n<!-- begin function 19 read_canvas() -->\n\
  3856. function read_canvas(){\
  3857. return reply[0];\
  3858. };\
  3859. this.read_canvas = read_canvas;\n\
  3860. <!-- end function 19 read_canvas() -->");
  3861.     case 20: fprintf(js_include_file,"\
  3862. \n<!-- begin function 20 read_canvas() -->\n\
  3863. function read_canvas(){\
  3864. var len  = ext_drag_images.length;\
  3865. var reply = new Array(len);\
  3866. for(var p = 0 ; p < len ; p++){\
  3867.    var img = ext_drag_images[p];\
  3868.    reply[p] = px2x(img[6])+\":\"+px2y(img[7]);\
  3869. };\
  3870. return reply;\
  3871. };\
  3872. this.read_canvas = read_canvas;\n\
  3873. <!-- end function 20 read_canvas() -->");
  3874.     break;
  3875.     case 21: fprintf(js_include_file,"\
  3876. \n<!-- begin function 21 read_canvas() -->\n\
  3877. function read_canvas(){\
  3878. if( userdraw_x.length == 0){alert(\"nothing drawn...\");return;}\
  3879. var reply_coord = new Array();var p = 0;\
  3880. while(userdraw_x[p]){\
  3881.  reply_coord[p] = \"(\"+px2x(userdraw_x[p])+\":\"+px2y(userdraw_y[p])+\")\";\
  3882.  p++;\
  3883. };\
  3884. if(p == 0){alert(\"nothing drawn...\");return;};\
  3885. if( document.getElementById(\"canvas_input0\") ){\
  3886.  var p = 0;var input_reply = new Array();\
  3887.  if( document.getElementById(\"canvas_input0\")){\
  3888.   var t = 0;\
  3889.   while(document.getElementById(\"canvas_input\"+t)){\
  3890.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3891.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3892.     p++;\
  3893.    };\
  3894.    t++;\
  3895.   };\
  3896.  };\
  3897.  if( typeof userdraw_text != 'undefined' ){\
  3898.   return reply_coord+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3899.  }\
  3900.  else\
  3901.  {\
  3902.   return reply_coord+\"\\n\"+input_reply;\
  3903.  }\
  3904. }\
  3905. else\
  3906. {\
  3907.  if( typeof userdraw_text != 'undefined' ){\
  3908.   return reply_coord+\"\\n\"+userdraw_text;\
  3909.  }\
  3910.  else\
  3911.  {\
  3912.   return reply_coord;\
  3913.  };\
  3914. };\
  3915. };\
  3916. this.read_canvas = read_canvas;\n\
  3917. <!-- end function 21 read_canvas() -->");
  3918.     break;
  3919.     case 22: fprintf(js_include_file,"\
  3920. \n<!-- begin function 22 read_canvas() -->\n\
  3921. function read_canvas(){\
  3922. var reply = new Array();\
  3923. var p = 0;\
  3924. var idx = 0;\
  3925. while(userdraw_x[p]){\
  3926.  reply[idx] = px2x(userdraw_x[p]);\
  3927.  idx++;\
  3928.  reply[idx] = px2y(userdraw_y[p]);\
  3929.  idx++;p++;\
  3930. };\
  3931. if(p == 0){alert(\"nothing drawn...\");return;};\
  3932. if( document.getElementById(\"canvas_input0\") ){\
  3933.  var p = 0;var input_reply = new Array();\
  3934.  if( document.getElementById(\"canvas_input0\")){\
  3935.   var t = 0;\
  3936.   while(document.getElementById(\"canvas_input\"+t)){\
  3937.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3938.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3939.     p++;\
  3940.    };\
  3941.    t++;\
  3942.   };\
  3943.  };\
  3944.  if( typeof userdraw_text != 'undefined' ){\
  3945.   return reply +\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3946.  }\
  3947.  else\
  3948.  {\
  3949.   return reply +\"\\n\"+input_reply;\
  3950.  }\
  3951. }\
  3952. else\
  3953. {\
  3954.  if( typeof userdraw_text != 'undefined' ){\
  3955.   return reply +\"\\n\"+userdraw_text;\
  3956.  }\
  3957.  else\
  3958.  {\
  3959.   return reply;\
  3960.  }\
  3961. };\
  3962. };\
  3963. this.read_canvas = read_canvas;\n\
  3964. <!-- end function 22 read_canvas() -->");
  3965.     break;
  3966.     case 23: fprintf(js_include_file,"\
  3967. \n<!-- begin function 23 read_canvas() default 5 px marge -->\n\
  3968. function read_canvas(){\
  3969. if( userdraw_x.length < 2){alert(\"nothing drawn...\");return;}\
  3970. var reply_x = new Array();var reply_y = new Array();var p = 0;\
  3971. var lu = userdraw_x.length;\
  3972. if( lu != userdraw_y.length ){ alert(\"x / y mismatch !\");return;}\
  3973. var marge = 5;\
  3974. reply_x[p] = px2x(userdraw_x[0]);reply_y[p] = px2y(userdraw_y[0]);p++;\
  3975. for(var i = 0; i < lu - 1 ; i++ ){\
  3976.  if( (userdraw_x[i] < (userdraw_x[i+1] + marge)) && (userdraw_x[i] > (userdraw_x[i+1] - marge)) ){\
  3977.   if( (userdraw_y[i] < (userdraw_y[i+1] + marge)) && (userdraw_y[i] > (userdraw_y[i+1] - marge)) ){\
  3978.    reply_x[p] = px2x(userdraw_x[i]);reply_y[p] = px2y(userdraw_y[i]);\
  3979.    if( isNaN(reply_x[p]) || isNaN(reply_y[p]) ){ alert(\"hmmmm ?\");return; };\
  3980.    p++;\
  3981.   };\
  3982.  };\
  3983. };\
  3984. if( document.getElementById(\"canvas_input0\")){\
  3985.  var p = 0;var input_reply = new Array();\
  3986.  if( document.getElementById(\"canvas_input0\")){\
  3987.   var t = 0;\
  3988.   while(document.getElementById(\"canvas_input\"+t)){\
  3989.    if( ! document.getElementById(\"canvas_input\"+t).getAttribute(\"readonly\")){\
  3990.     input_reply[p] = document.getElementById(\"canvas_input\"+t).value;\
  3991.     p++;\
  3992.    };\
  3993.    t++;\
  3994.   };\
  3995.  };\
  3996.  if( typeof userdraw_text != 'undefined' ){\
  3997.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply+\"\\n\"+userdraw_text;\
  3998.  }\
  3999.  else\
  4000.  {\
  4001.   return reply_x+\"\\n\"+reply_y+\"\\n\"+input_reply;\
  4002.  }\
  4003. }\
  4004. else\
  4005. {\
  4006.  if( typeof userdraw_text != 'undefined' ){\
  4007.   return reply_x+\"\\n\"+reply_y+\"\\n\"+userdraw_text;\
  4008.  }\
  4009.  else\
  4010.  {\
  4011.   return reply_x+\"\\n\"+reply_y;\
  4012.  };\
  4013. };\
  4014. };\
  4015. this.read_canvas = read_canvas;\n\
  4016. <!-- end function 23 read_canvas() -->");
  4017.     break;
  4018.  
  4019.     default: canvas_error("hmmm unknown replyformat...");break;
  4020. }
  4021.  return;
  4022. }
  4023.  
  4024.  
  4025. /*
  4026.  add drawfunction :
  4027.  - functions used by userdraw_primitives (circle,rect,path,triangle...)
  4028.  - things not covered by the drag&drop library (static objects like parallel, lattice ,gridfill , imagefill)
  4029.  - grid / mathml
  4030.  - will not scale or zoom in
  4031.  - will not be filled via pixel operations like fill / floodfill / filltoborder / clickfill
  4032.  - is printed directly into 'js_include_file'
  4033. */
  4034.  
  4035. void add_javascript_functions(int js_functions[],int canvas_root_id){
  4036. int i;
  4037. for(i = 0 ; i < MAX_JS_FUNCTIONS; i++){
  4038.  if( js_functions[i] == 1){
  4039.     switch(i){
  4040.     case DRAG_EXTERNAL_IMAGE:
  4041. fprintf(js_include_file,"\n<!-- drag external images --->\n\
  4042. var external_canvas = create_canvas%d(7,xsize,ysize);\
  4043. var external_ctx = external_canvas.getContext(\"2d\");\
  4044. var external_canvas_rect = external_canvas.getBoundingClientRect();\
  4045. canvas_div.addEventListener(\"mousedown\",setxy,false);\
  4046. canvas_div.addEventListener(\"mouseup\",dragstop,false);\
  4047. canvas_div.addEventListener(\"mousemove\",dragxy,false);\
  4048. var selected_image = null;\
  4049. var ext_image_cnt = 0;\
  4050. var ext_drag_images = new Array();\
  4051. function drag_external_image(URL,sx,sy,swidth,sheight,x0,y0,width,height,idx,draggable){\
  4052. ext_image_cnt = idx;\
  4053. var image = new Image();\
  4054. image.src = URL;\
  4055. image.onload = function(){\
  4056.  if( x0 < 1 ){ x0 = 0; };if( y0 < 1 ){ y0 = 0; };if( sx < 1 ){ sx = 0; };if( sy < 1 ){ sy = 0; };\
  4057.  if( width < 1 ){ width = image.width; };if( height < 1 ){ height = image.height; };\
  4058.  if( swidth < 1 ){ swidth = image.width; };if( sheight < 1 ){ sheight = image.height; };\
  4059.  img = new Array(10);\
  4060.  img[0] = draggable;img[1] = image;img[2] = sx;img[3] = sy;img[4] = swidth;img[5] = sheight;\
  4061.  img[6] = x0;img[7] = y0;img[8] = width;img[9] = height;\
  4062.  ext_drag_images[idx] = img;\
  4063.  external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4064. };\
  4065. };\
  4066. function dragstop(evt){\
  4067. selected_image = null;return;\
  4068. };\
  4069. function dragxy(evt){\
  4070. if( selected_image != null ){\
  4071.  var xoff = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);\
  4072.  var yoff = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);\
  4073.  var s_img = ext_drag_images[selected_image];\
  4074.  s_img[6] = evt.clientX - external_canvas_rect.left + xoff;\
  4075.  s_img[7] = evt.clientY - external_canvas_rect.top + yoff;\
  4076.  ext_drag_images[selected_image] = s_img;\
  4077.  external_ctx.clearRect(0,0,xsize,ysize);\
  4078.  for(var i = 0; i <= ext_image_cnt ; i++){\
  4079.   var img = ext_drag_images[i];\
  4080.   external_ctx.drawImage(img[1],img[2],img[3],img[4],img[5],img[6],img[7],img[8],img[9]);\
  4081.  };\
  4082. };\
  4083. };\
  4084. function setxy(evt){\
  4085. if( ! selected_image && evt.which == 1 ){\
  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 xm = evt.clientX - external_canvas_rect.left + xoff;\
  4089.  var ym = evt.clientY - external_canvas_rect.top + yoff;\
  4090.  for(var p = 0 ; p <= ext_image_cnt ; p++){\
  4091.   var img = ext_drag_images[p];\
  4092.   if( img[0] == 1 ){\
  4093.    var w = img.width;\
  4094.    var h = img.height;\
  4095.    if( xm > img[6] && xm < img[6] + img[4]){\
  4096.     if( ym > img[7] && ym < img[7] + img[5]){\
  4097.      img[6] = xm;\
  4098.      img[7] = ym;\
  4099.      ext_drag_images[p] = img;\
  4100.      selected_image = p;\
  4101.      dragxy(evt);\
  4102.     };\
  4103.    };\
  4104.   };\
  4105.  };\
  4106. }\
  4107. else\
  4108. {\
  4109.  selected_image = null;\
  4110. };\
  4111. };",canvas_root_id);
  4112.     break;
  4113.  
  4114.     case DRAW_EXTERNAL_IMAGE:
  4115. fprintf(js_include_file,"\n<!-- draw external images -->\n\
  4116. draw_external_image = function(URL,sx,sy,swidth,sheight,x0,y0,width,height,draggable){\
  4117. var image = new Image();\
  4118. image.src = URL;\
  4119. var canvas_bg_div = document.getElementById(\"canvas_div%d\");\
  4120. image.onload = function(){\
  4121.  if( x0 < 1 ){ x0 = 0; };\
  4122.  if( y0 < 1 ){ y0 = 0; };\
  4123.  if( sx < 1 ){ sx = 0; };\
  4124.  if( sy < 1 ){ sy = 0; };\
  4125.  if( width < 1 ){ width = image.width;};\
  4126.  if( height < 1 ){ height = image.height;};\
  4127.  if( swidth < 1 ){ swidth = image.width;};\
  4128.  if( sheight < 1 ){ sheight = image.height;};\
  4129.  var ml = x0 - sx;\
  4130.  var mh = y0 - sy;\
  4131.  canvas_bg_div.style.backgroundPosition= \"left \"+ml+\"px top \"+mh+\"px\";\
  4132.  canvas_bg_div.style.backgroundSize = width+\"px \"+height+\"px\";\
  4133.  canvas_bg_div.style.backgroundRepeat = \"no-repeat\";\
  4134.  canvas_bg_div.style.backgroundPosition= sx+\"px \"+sy+\"px\";\
  4135.  canvas_bg_div.style.backgroundImage = \"url(\" + URL + \")\";\
  4136. };\
  4137. };",canvas_root_id);
  4138.     break;
  4139.  
  4140.     case DRAW_ZOOM_BUTTONS: /* 6 rectangles 15x15 px  forbidden zone for drawing : y < ysize - 15*/
  4141. fprintf(js_include_file,"\n<!-- draw zoom buttons -->\n\
  4142. draw_zoom_buttons = function(canvas_type,color,opacity){\
  4143. var obj;\
  4144. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4145.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4146. }\
  4147. else\
  4148. {\
  4149.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4150. };\
  4151. var ctx = obj.getContext(\"2d\");\
  4152. ctx.font =\"18px Ariel\";\
  4153. ctx.textAlign = \"right\";\
  4154. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4155. ctx.fillText(\"+\",xsize,ysize);\
  4156. ctx.fillText(\"\\u2212\",xsize - 15,ysize);\
  4157. ctx.fillText(\"\\u2192\",xsize - 30,ysize-2);\
  4158. ctx.fillText(\"\\u2190\",xsize - 45,ysize-2);\
  4159. ctx.fillText(\"\\u2191\",xsize - 60,ysize-2);\
  4160. ctx.fillText(\"\\u2193\",xsize - 75,ysize-2);\
  4161. ctx.fillText(\"\\u00D7\",xsize - 90,ysize-2);\
  4162. ctx.stroke();\
  4163. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4164.  
  4165.     break;
  4166.     case DRAW_GRIDFILL:/* not used for userdraw */
  4167. fprintf(js_include_file,"\n<!-- draw gridfill -->\n\
  4168. draw_gridfill = function(canvas_type,x0,y0,dx,dy,linewidth,color,opacity,xsize,ysize){\
  4169. var obj;\
  4170. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4171.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4172. }\
  4173. else\
  4174. {\
  4175.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4176. };\
  4177. var ctx = obj.getContext(\"2d\");\
  4178. var x,y;\
  4179. ctx.save();\
  4180. ctx.strokeStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4181. snap_x = dx;snap_y = dy;\
  4182. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4183.    ctx.moveTo(x,y0);\
  4184.    ctx.lineTo(x,ysize);\
  4185. };\
  4186. for( y = y0 ; y < ysize+dy; y = y + dy ){\
  4187.    ctx.moveTo(x0,y);\
  4188.    ctx.lineTo(xsize,y);\
  4189. };\
  4190. ctx.stroke();\
  4191. ctx.restore();\
  4192. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4193.     break;
  4194.  
  4195.     case DRAW_IMAGEFILL:/* not  used for userdraw */
  4196. fprintf(js_include_file,"\n<!-- draw imagefill -->\n\
  4197. draw_imagefill = function(canvas_type,x0,y0,URL,xsize,ysize){\
  4198. var obj;\
  4199. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4200.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4201. }\
  4202. else\
  4203. {\
  4204.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4205. };\
  4206. var ctx = obj.getContext(\"2d\");\
  4207. ctx.save();\
  4208. var img = new Image();\
  4209. img.src = URL;\
  4210. img.onload = function(){\
  4211.  if( (img.width > xsize-x0) && (img.height > ysize-y0) ){\
  4212.    ctx.drawImage(img,x0,y0,xsize,ysize);\
  4213.  }\
  4214.  else\
  4215.  {\
  4216.    var repeat = \"repeat\";\
  4217.    if(img.width > xsize - x0){\
  4218.         repeat = \"repeat-y\";\
  4219.    }\
  4220.    else\
  4221.    {\
  4222.     if( img.height > ysize -x0 ){\
  4223.      repeat = \"repeat-x\";\
  4224.     }\
  4225.    }\
  4226.    var pattern = ctx.createPattern(img,repeat);\
  4227.    ctx.rect(x0,y0,xsize,ysize);\
  4228.    ctx.fillStyle = pattern;\
  4229.  }\
  4230.  ctx.fill();\
  4231. };\
  4232. ctx.restore();\
  4233. return;\
  4234. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4235.     break;
  4236.  
  4237.     case DRAW_DOTFILL:/* not  used for userdraw */
  4238. fprintf(js_include_file,"\n<!-- draw dotfill -->\n\
  4239. draw_dotfill = function(canvas_type,x0,y0,dx,dy,radius,color,opacity,xsize,ysize){\
  4240. var obj;\
  4241. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4242.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4243. }\
  4244. else\
  4245. {\
  4246.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4247. };\
  4248. var ctx = obj.getContext(\"2d\");\
  4249. var x,y;\
  4250. ctx.closePath();\
  4251. ctx.save();\
  4252. snap_x = dx;snap_y = dy;\
  4253. ctx.fillStyle=\"rgba(\"+color+\",\"+opacity+\")\";\
  4254. for( x = x0 ; x < xsize+dx ; x = x + dx ){\
  4255.  for( y = y0 ; y < ysize+dy ; y = y + dy ){\
  4256.   ctx.arc(x,y,radius,0,2*Math.PI,false);\
  4257.   ctx.closePath();\
  4258.  }\
  4259. }\
  4260. ctx.fill();\
  4261. ctx.restore();\
  4262. return;};",canvas_root_id,canvas_root_id,canvas_root_id);
  4263.     break;
  4264.  
  4265.     case DRAW_DIAMONDFILL:/* not used for userdraw */
  4266. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4267. draw_diamondfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4268.  var obj;\
  4269. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4270.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4271. }\
  4272. else\
  4273. {\
  4274.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4275. };\
  4276. var ctx = obj.getContext(\"2d\");\
  4277. var x;\
  4278. var y;\
  4279. ctx.save();\
  4280. ctx.lineWidth = linewidth;\
  4281. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4282. y = ysize;\
  4283. for( x = x0 ; x < xsize ; x = x + dx ){\
  4284.  ctx.moveTo(x,y0);\
  4285.  ctx.lineTo(xsize,y);\
  4286.  y = y - dy;\
  4287. };\
  4288. y = y0;\
  4289. for( x = xsize ; x > 0 ; x = x - dx){\
  4290.  ctx.moveTo(x,ysize);\
  4291.  ctx.lineTo(x0,y);\
  4292.  y = y + dy;\
  4293. };\
  4294. x = x0;\
  4295. for( y = y0 ; y < ysize ; y = y + dy ){\
  4296.  ctx.moveTo(xsize,y);\
  4297.  ctx.lineTo(x,ysize);\
  4298.  x = x + dx;\
  4299. };\
  4300. x = xsize;\
  4301. for( y = ysize ; y > y0 ; y = y - dy ){\
  4302.  ctx.moveTo(x,y0);\
  4303.  ctx.lineTo(x0,y);\
  4304.  x = x - dx;\
  4305. };\
  4306. ctx.stroke();\
  4307. ctx.restore();\
  4308. return;\
  4309. }",canvas_root_id,canvas_root_id,canvas_root_id);
  4310.     break;
  4311.  
  4312.     case DRAW_HATCHFILL:/* not used for userdraw */
  4313. fprintf(js_include_file,"\n<!-- draw hatch fill -->\n\
  4314. draw_hatchfill = function(canvas_type,x0,y0,dx,dy,linewidth,stroke_color,stroke_opacity,xsize,ysize){\
  4315.  var obj;\
  4316. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4317.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4318. }\
  4319. else\
  4320. {\
  4321.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4322. };\
  4323. var ctx = obj.getContext(\"2d\");\
  4324. var x;\
  4325. var y;\
  4326. ctx.save();\
  4327. ctx.lineWidth = linewidth;\
  4328. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4329. y = ysize;\
  4330. for( x = x0 ; x < xsize ; x = x + dx ){\
  4331.  ctx.moveTo(x,y0);\
  4332.  ctx.lineTo(xsize,y);\
  4333.  y = y - dy;\
  4334. };\
  4335. y = y0;\
  4336. for( x = xsize ; x >= dx ; x = x - dx){\
  4337.  ctx.moveTo(x,ysize);\
  4338.  ctx.lineTo(x0,y);\
  4339.  y = y + dy;\
  4340. };\
  4341. ctx.stroke();\
  4342. ctx.restore();\
  4343. return;\
  4344. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4345.     break;
  4346.     case DRAW_CIRCLES:/*  used for userdraw */
  4347. fprintf(js_include_file,"\n<!-- draw circles -->\n\
  4348. 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){\
  4349. ctx.save();\
  4350. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4351. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4352. ctx.lineWidth = line_width;\
  4353. for(var p = 0 ; p < x_points.length ; p++ ){\
  4354.  ctx.beginPath();\
  4355.  ctx.arc(x_points[p],y_points[p],radius[p],0,2*Math.PI,false);\
  4356.  ctx.closePath();\
  4357.  if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4358.  if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4359.  ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4360.  ctx.stroke();\
  4361. }\
  4362. ctx.restore();\
  4363. return;\
  4364. };");
  4365.     break;
  4366.     case DRAW_POLYLINE:/* user for userdraw : draw lines through points */
  4367. fprintf(js_include_file,"\n<!-- draw polyline -->\n\
  4368. draw_polyline = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4369. ctx.save();\
  4370. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4371. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4372. ctx.lineWidth = line_width;\
  4373. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4374. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4375. ctx.clearRect(0,0,xsize,ysize);\
  4376. ctx.beginPath();\
  4377. for(var p = 0 ; p < x_points.length-1 ; p++ ){\
  4378.  ctx.moveTo(x_points[p],y_points[p]);\
  4379.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4380. }\
  4381. ctx.closePath();\
  4382. ctx.stroke();\
  4383. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4384. for(var p = 0 ; p < x_points.length ; p++ ){\
  4385.  ctx.beginPath();\
  4386.  ctx.arc(x_points[p],y_points[p],line_width,0,2*Math.PI,false);\
  4387.  ctx.closePath();ctx.fill();ctx.stroke();\
  4388. };\
  4389. ctx.restore();\
  4390. return;\
  4391. };");
  4392.     break;
  4393.  
  4394.     case DRAW_SEGMENTS:/*  used for userdraw */
  4395. fprintf(js_include_file,"\n<!-- draw segments -->\n\
  4396. draw_segments = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4397. ctx.save();\
  4398. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4399. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4400. ctx.lineWidth = line_width;\
  4401. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4402. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4403. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4404.  ctx.beginPath();\
  4405.  ctx.moveTo(x_points[p],y_points[p]);\
  4406.  ctx.lineTo(x_points[p+1],y_points[p+1]);\
  4407.  ctx.closePath();\
  4408.  ctx.stroke();\
  4409.  }\
  4410.  ctx.restore();\
  4411.  return;\
  4412. };");
  4413.     break;
  4414.  
  4415.     case DRAW_LINES:/*  used for userdraw */
  4416. fprintf(js_include_file,"\n<!-- draw lines -->\n\
  4417. function calc_line(x1,x2,y1,y2){\
  4418. var marge = 2;\
  4419. if(x1 < x2+marge && x1>x2-marge){\
  4420.  return [x1,0,x1,ysize];\
  4421. };\
  4422. if(y1 < y2+marge && y1>y2-marge){\
  4423.  return [0,y1,xsize,y1];\
  4424. };\
  4425. var Y1 = y1 - (x1)*(y2 - y1)/(x2 - x1);\
  4426. var Y2 = y1 + (xsize - x1)*(y2 - y1)/(x2 - x1);\
  4427. return [0,Y1,xsize,Y2];\
  4428. };\
  4429. draw_lines = function(ctx,x_points,y_points,line_width,stroke_color,stroke_opacity,use_dashed,dashtype0,dashtype1,use_rotate,angle,use_translate,vector){\
  4430. ctx.save();\
  4431. var line = new Array(4);\
  4432. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4433. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4434. ctx.lineWidth = line_width;\
  4435. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4436. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4437. for(var p = 0 ; p < x_points.length ; p = p+2 ){\
  4438.  line = calc_line(x_points[p],x_points[p+1],y_points[p],y_points[p+1]);\
  4439.  ctx.beginPath();\
  4440.  ctx.moveTo(line[0],line[1]);\
  4441.  ctx.lineTo(line[2],line[3]);\
  4442.  ctx.closePath();\
  4443.  ctx.stroke();\
  4444.  }\
  4445.  ctx.restore();\
  4446.  return;\
  4447. };");
  4448.     break;
  4449.  
  4450.     case DRAW_CROSSHAIRS:/*  used for userdraw */
  4451. fprintf(js_include_file,"\n<!-- draw crosshairs  -->\n\
  4452. draw_crosshairs = function(ctx,x_points,y_points,line_width,crosshair_size,stroke_color,stroke_opacity,use_rotate,angle,use_translate,vector){\
  4453. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4454. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4455. ctx.lineWidth = line_width;\
  4456. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4457. var x1,x2,y1,y2;\
  4458. for(var p = 0 ; p < x_points.length ; p++ ){\
  4459.  x1 = x_points[p] - crosshair_size;\
  4460.  x2 = x_points[p] + crosshair_size;\
  4461.  y1 = y_points[p] - crosshair_size;\
  4462.  y2 = y_points[p] + crosshair_size;\
  4463.  ctx.beginPath();\
  4464.  ctx.moveTo(x1,y1);\
  4465.  ctx.lineTo(x2,y2);\
  4466.  ctx.closePath();\
  4467.  ctx.stroke();\
  4468.  ctx.beginPath();\
  4469.  ctx.moveTo(x2,y1);\
  4470.  ctx.lineTo(x1,y2);\
  4471.  ctx.closePath();\
  4472.  ctx.stroke();\
  4473. }\
  4474. ctx.restore();\
  4475.  return;\
  4476. };");
  4477.     break;
  4478.  
  4479.     case DRAW_RECTS:/*  used for userdraw */
  4480. fprintf(js_include_file,"\n<!-- draw rects -->\n\
  4481. 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){\
  4482. ctx.save();\
  4483. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4484. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4485. ctx.lineWidth = line_width;\
  4486. ctx.strokeStyle = \"rgba('+stroke_color+','+stroke_opacity+')\";\
  4487. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];}};\
  4488. for(var p = 0 ; p < x_points.length ; p = p + 2){\
  4489.  ctx.beginPath();\
  4490.  ctx.rect(x_points[p],y_points[p],x_points[p+1]-x_points[p],y_points[p+1]-y_points[p]);\
  4491.  ctx.closePath();\
  4492.  if(use_filled == 1 ){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4493.  ctx.stroke();\
  4494. };\
  4495. ctx.restore();\
  4496. return;\
  4497. };");
  4498.     break;
  4499.  
  4500.     case DRAW_ROUNDRECTS:/*  used for userdraw */
  4501. fprintf(js_include_file,"\n<!-- draw round rects -->\n\
  4502. 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){\
  4503. ctx.save();\
  4504. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4505. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4506. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4507. var x,y,w,h,r;\
  4508. for(var p = 0; p < x_points.length; p = p+2){\
  4509.  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);\
  4510.  ctx.beginPath();ctx.moveTo(x + r, y);\
  4511.  ctx.lineTo(x + w - r, y);\
  4512.  ctx.quadraticCurveTo(x + w, y, x + w, y + r);\
  4513.  ctx.lineTo(x + w, y + h - r);\
  4514.  ctx.quadraticCurveTo(x + w, y + h, x + w - r, y + h);\
  4515.  ctx.lineTo(x + r, y + h);\
  4516.  ctx.quadraticCurveTo(x, y + h, x, y + h - r);\
  4517.  ctx.lineTo(x, y + r);\
  4518.  ctx.quadraticCurveTo(x, y, x + r, y);\
  4519.  ctx.closePath();if( use_dashed == 1 ){ctx.setLineDash([dashtype0,dashtype1]);};\
  4520.  ctx.strokeStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4521.  if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();};\
  4522.  ctx.stroke();\
  4523. }\
  4524. ctx.restore();\
  4525. };");
  4526.     break;
  4527.  
  4528.     case DRAW_ELLIPSES:/* not  used for userdraw */
  4529. fprintf(js_include_file,"\n<!-- draw ellipses -->\n\
  4530. 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){\
  4531. var obj;\
  4532. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4533.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4534. }\
  4535. else\
  4536. {\
  4537.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  4538. };\
  4539. var ctx = obj.getContext(\"2d\");\
  4540. ctx.save();\
  4541. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4542. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4543. var cx,cy,ry,rx;\
  4544. ctx.lineWidth = line_width;\
  4545. if( use_filled == 1 ){ctx.fillStyle =\"rgba(\"+fill_color+\",\"+fill_opacity+\")\";};\
  4546. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4547. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4548. for(var p=0;p< x_points.length;p = p+2){\
  4549.  ctx.beginPath();\
  4550.  cx = x_points[p];cy = y_points[p];rx = 0.25*x_points[p+1];ry = 0.25*y_points[p+1];\
  4551.  ctx.translate(cx - rx, cy - ry);\
  4552.  ctx.scale(rx, ry);\
  4553.  ctx.arc(1, 1, 1, 0, 2 * Math.PI, false);\
  4554.  if( use_filled == 1 ){ctx.fill();}\
  4555.  ctx.stroke();\
  4556. };\
  4557. ctx.restore();\
  4558. };",canvas_root_id,canvas_root_id,canvas_root_id);
  4559.     break;
  4560.  
  4561.     case DRAW_PATHS: /*  used for userdraw */
  4562. fprintf(js_include_file,"\n<!-- draw paths -->\n\
  4563. 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){\
  4564. ctx.save();\
  4565. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4566. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4567. ctx.lineWidth = line_width;\
  4568. ctx.lineJoin = \"round\";\
  4569. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4570. ctx.beginPath();\
  4571. ctx.moveTo(x_points[0],y_points[0]);\
  4572. for(var p = 1 ; p < x_points.length ; p++ ){ctx.lineTo(x_points[p],y_points[p]);}\
  4573. if(closed_path == 1){ctx.lineTo(x_points[0],y_points[0]);ctx.closePath();}\
  4574. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4575. if(use_filled == 1){ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";ctx.fill();}\
  4576. ctx.stroke();\
  4577. ctx.restore();\
  4578. return;\
  4579. };");
  4580.  
  4581.     break;
  4582.     case DRAW_ARROWS:/*  used for userdraw */
  4583. fprintf(js_include_file,"\n<!-- draw arrows -->\n\
  4584. 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){\
  4585. ctx.save();\
  4586. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  4587. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  4588. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4589. ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4590. ctx.lineWidth = line_width;\
  4591. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4592. ctx.lineCap = \"round\";\
  4593. ctx.save();\
  4594. var x1,y1,x2,y2,dx,dy,len;\
  4595. for(var p = 0 ; p < x_points.length - 1 ; p = p +2){\
  4596.   ctx.restore();ctx.save();\
  4597.   x1 = x_points[p];y1 = y_points[p];x2 = x_points[p+1];y2 = y_points[p+1];dx = x2 - x1;dy = y2 - y1;\
  4598.   len = Math.sqrt(dx*dx+dy*dy);\
  4599.   ctx.translate(x2,y2);\
  4600.   ctx.rotate(Math.atan2(dy,dx));\
  4601.   ctx.lineCap = \"round\";\
  4602.   ctx.beginPath();\
  4603.   ctx.moveTo(0,0);\
  4604.   ctx.lineTo(-len,0);\
  4605.   ctx.closePath();\
  4606.   ctx.stroke();\
  4607.   ctx.beginPath();\
  4608.   ctx.moveTo(0,0);\
  4609.   ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  4610.   ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  4611.   ctx.closePath();\
  4612.   ctx.fill();\
  4613.   if( type == 2 ){\
  4614.     ctx.restore();\
  4615.     ctx.save();\
  4616.     ctx.translate(x1,y1);\
  4617.     ctx.rotate(Math.atan2(-dy,-dx));\
  4618.     ctx.beginPath();\
  4619.     ctx.moveTo(0,0);\
  4620.     ctx.lineTo(-1*arrow_head,-0.5*arrow_head);\
  4621.     ctx.lineTo(-1*arrow_head, 0.5*arrow_head);\
  4622.     ctx.closePath();\
  4623.     ctx.stroke();\
  4624.     ctx.fill();\
  4625.   }\
  4626.  }\
  4627.  ctx.restore();\
  4628.  return;\
  4629. };");
  4630.     break;
  4631.  
  4632.     case DRAW_VIDEO:/* not  used for userdraw */
  4633. fprintf(js_include_file,"\n<!-- draw video -->\n\
  4634. draw_video = function(canvas_root_id,x,y,w,h,URL){\
  4635. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4636. var video_div = document.createElement(\"div\");\
  4637. canvas_div.appendChild(video_div);\
  4638. video_div.style.position = \"absolute\";\
  4639. video_div.style.left = x+\"px\";\
  4640. video_div.style.top = y+\"px\";\
  4641. video_div.style.width = w+\"px\";\
  4642. video_div.style.height = h+\"px\";\
  4643. var video = document.createElement(\"video\");\
  4644. video_div.appendChild(video);\
  4645. video.style.width = w+\"px\";\
  4646. video.style.height = h+\"px\";\
  4647. video.autobuffer = true;\
  4648. video.controls = true;video.autoplay = false;\
  4649. var src = document.createElement(\"source\");\
  4650. src.type = \"video/mp4\";\
  4651. src.src = URL;\
  4652. video.appendChild(src);\
  4653. video.load();\
  4654. return;\
  4655. };");
  4656.     break;
  4657.  
  4658.     case DRAW_AUDIO:/* not used for userdraw */
  4659. fprintf(js_include_file,"\n<!-- draw audio -->\n\
  4660. draw_audio = function(canvas_root_id,x,y,w,h,loop,visible,URL1,URL2){\
  4661. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4662. var audio_div = document.createElement(\"div\");\
  4663. canvas_div.appendChild(audio_div);\
  4664. audio_div.style.position = \"absolute\";\
  4665. audio_div.style.left = x+\"px\";\
  4666. audio_div.style.top = y+\"px\";\
  4667. audio_div.style.width = w+\"px\";\
  4668. audio_div.style.height = h+\"px\";\
  4669. var audio = document.createElement(\"audio\");\
  4670. audio_div.appendChild(audio);\
  4671. audio.setAttribute(\"style\",\"width:\"+w+\"px;height:\"+h+\"px\");\
  4672. audio.autobuffer = true;\
  4673. if(visible == 1 ){ audio.controls = true;audio.autoplay = false;}else{ audio.controls = false;audio.autoplay = true;}\
  4674. if(loop == 1 ){ audio.loop = true;}else{ audio.loop = false;}\
  4675. var src1 = document.createElement(\"source\");\
  4676. src1.type = \"audio/ogg\";\
  4677. src1.src = URL1;\
  4678. audio.appendChild(src1);\
  4679. var src2 = document.createElement(\"source\");\
  4680. src2.type = \"audio/mpeg\";\
  4681. src2.src = URL2;\
  4682. audio.appendChild(src2);\
  4683. audio.load();\
  4684. return;\
  4685. };");
  4686.     break;
  4687.  
  4688.     case DRAW_HTTP:/* not  used for userdraw */
  4689. fprintf(js_include_file,"\n<!-- draw http -->\n\
  4690. draw_http = function(canvas_root_id,x,y,w,h,URL){\
  4691. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4692. var http_div = document.createElement(\"div\");\
  4693. var iframe = document.createElement(\"iframe\");\
  4694. canvas_div.appendChild(http_div);\
  4695. http_div.appendChild(iframe);\
  4696. iframe.src = URL;\
  4697. iframe.setAttribute(\"width\",w);\
  4698. iframe.setAttribute(\"height\",h);\
  4699. return;\
  4700. };");
  4701.     break;
  4702.  
  4703.     case DRAW_XML:
  4704. fprintf(js_include_file,"\n<!-- draw xml -->\n\
  4705. draw_xml = function(canvas_root_id,x,y,w,h,mathml,onclick){\
  4706. var canvas_div = document.getElementById(\"canvas_div\"+canvas_root_id);\
  4707. var xml_div = document.createElement(\"div\");\
  4708. canvas_div.appendChild(xml_div);\
  4709. xml_div.innerHTML = mathml;\
  4710. if(onclick != 0){\
  4711.  xml_div.onclick = function(){\
  4712.   reply[0] = onclick;\
  4713.   alert(\"send \"+onclick+\" ?\");\
  4714.  };\
  4715. };\
  4716. xml_div.style.position = \"absolute\";\
  4717. xml_div.style.left = x+\"px\";\
  4718. xml_div.style.top = y+\"px\";\
  4719. xml_div.style.width = w+\"px\";\
  4720. xml_div.style.height = h+\"px\";\
  4721. return;\
  4722. };"
  4723. );
  4724.     break;
  4725.     case DRAW_SGRAPH:
  4726. /*
  4727.  xstart = given
  4728.  ystart = given
  4729.  sgraph(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily)
  4730. */
  4731. fprintf(js_include_file,"\n<!-- draw sgraph -->\n\
  4732. draw_sgraph = function(canvas_type,precision,xmajor,ymajor,xminor,yminor,majorcolor,minorcolor,fontfamily,opacity,font_size){\
  4733. 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);};\
  4734. var ctx = obj.getContext(\"2d\");\
  4735. ctx.font = fontfamily;\
  4736. var minor_opacity = 0.8*opacity;\
  4737. ctx.clearRect(0,0,xsize,ysize);\
  4738. var d_x =  1.8*font_size;\
  4739. var d_y =  ctx.measureText(\"+ymax+\").width;\
  4740. var dx = xsize / (xmax - xmin);\
  4741. var dy = ysize / (ymax - ymin);\
  4742. var zero_x = d_y + dx;\
  4743. var zero_y = ysize - dy - d_x;\
  4744. var snor_x;\
  4745. if( xstart != xmin){\
  4746.  snor_x = 0.1*xsize;\
  4747. }\
  4748. else\
  4749. {\
  4750.  snor_x = 0;\
  4751.  xstart = xmin;\
  4752. };\
  4753. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4754. ctx.lineWidth = 2;\
  4755. ctx.beginPath();\
  4756. ctx.moveTo(xsize,zero_y);\
  4757. ctx.lineTo(zero_x,zero_y);\
  4758. ctx.lineTo(zero_x,0);\
  4759. ctx.stroke();\
  4760. ctx.closePath();\
  4761. ctx.beginPath();\
  4762. ctx.moveTo(zero_x,zero_y);\
  4763. ctx.lineTo(zero_x + 0.25*snor_x,zero_y - 0.1*snor_x);\
  4764. ctx.lineTo(zero_x + 0.5*snor_x,zero_y + 0.1*snor_x);\
  4765. ctx.lineTo(zero_x + 0.75*snor_x,zero_y - 0.1*snor_x);\
  4766. ctx.lineTo(zero_x + snor_x,zero_y);\
  4767. ctx.stroke();\
  4768. ctx.closePath();\
  4769. ctx.beginPath();\
  4770. var num = xstart;\
  4771. var flipflop = 1;\
  4772. var step_x = xmajor*(xsize - zero_x - snor_x)/(xmax - xstart);\
  4773. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4774.   if( 0.5*ctx.measureText(num).width > step_x ){\
  4775.    if( flipflop == 1 ){flipflop = 0;}else{flipflop = 1;};\
  4776.   };\
  4777.   if( flipflop == 1){\
  4778.    ctx.fillText(num,x - 0.5*ctx.measureText(num).width,zero_y+font_size);\
  4779.   }\
  4780.   else\
  4781.   {\
  4782.    ctx.fillText(num,x - 0.5*ctx.measureText(num).width,zero_y+2*font_size);\
  4783.   }\
  4784.   num = num + xmajor;\
  4785. };\
  4786. ctx.stroke();\
  4787. ctx.closePath();\
  4788. ctx.lineWidth = 1;\
  4789. ctx.beginPath();\
  4790. for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4791.   ctx.moveTo(x,zero_y);\
  4792.   ctx.lineTo(x,0);\
  4793. };\
  4794. ctx.stroke();\
  4795. ctx.closePath();\
  4796. if( xminor > 1){\
  4797.  ctx.lineWidth = 0.5;\
  4798.  ctx.beginPath();\
  4799.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  4800.  var minor_step_x = step_x / xminor;\
  4801.  var nx;\
  4802.  for(var x = zero_x+snor_x; x < xsize;x = x + step_x){\
  4803.    num = 1;\
  4804.    for(var p = 1 ; p < xminor ; p++){\
  4805.     nx = x + num*minor_step_x;\
  4806.     ctx.moveTo(nx,zero_y);\
  4807.     ctx.lineTo(nx,0);\
  4808.     num++;\
  4809.    };\
  4810.  };\
  4811.  ctx.stroke();\
  4812.  ctx.closePath();\
  4813.  ctx.beginPath();\
  4814.  ctx.lineWidth = 2;\
  4815.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4816.  for(var x = zero_x+snor_x ; x < xsize;x = x + step_x){\
  4817.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 12);\
  4818.  };\
  4819.  for(var x = zero_x+snor_x ; x < xsize;x = x + minor_step_x){\
  4820.   ctx.moveTo(x,zero_y);ctx.lineTo(x,zero_y - 6);\
  4821.  };\
  4822.  ctx.stroke();\
  4823.  ctx.closePath();\
  4824.  ctx.lineWidth = 0.5;\
  4825. };\
  4826. xmin = xstart - (xmajor*(zero_x+snor_x)/step_x);\
  4827. if( ystart != ymin){\
  4828.  snor_y = 0.1*ysize;\
  4829. }\
  4830. else\
  4831. {\
  4832.  snor_y = 0;\
  4833.  ystart = ymin;\
  4834. };\
  4835. ctx.lineWidth = 2;\
  4836. ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4837. ctx.beginPath();\
  4838. ctx.moveTo(zero_x,zero_y);\
  4839. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.25*snor_y);\
  4840. ctx.lineTo(zero_x + 0.1*snor_y,zero_y - 0.5*snor_y);\
  4841. ctx.lineTo(zero_x - 0.1*snor_y,zero_y - 0.75*snor_y);\
  4842. ctx.lineTo(zero_x,zero_y - snor_y);\
  4843. ctx.stroke();\
  4844. ctx.closePath();\
  4845. ctx.beginPath();\
  4846. ctx.lineWidth = 1;\
  4847. num = ystart;\
  4848. var step_y = ymajor*(zero_y - snor_y)/(ymax - ystart);\
  4849. for(var y = zero_y - snor_y ; y > 0; y = y - step_y){\
  4850.  ctx.moveTo(zero_x,y);\
  4851.  ctx.lineTo(xsize,y);\
  4852.  ctx.fillText(num,zero_x - ctx.measureText(num+\" \").width,parseInt(y+0.2*font_size));\
  4853.  num = num + ymajor;\
  4854. };\
  4855. ctx.stroke();\
  4856. ctx.closePath();\
  4857. if( yminor > 1){\
  4858.  ctx.lineWidth = 0.5;\
  4859.  ctx.beginPath();\
  4860.  ctx.strokeStyle = \"rgba(\"+minorcolor+\",\"+minor_opacity+\")\";\
  4861.  var minor_step_y = step_y / yminor;\
  4862.  var ny;\
  4863.  for(var y = 0 ; y < zero_y - snor_y ;y = y + step_y){\
  4864.   num = 1;\
  4865.   for(var p = 1 ;p < yminor;p++){\
  4866.     ny = y + num*minor_step_y;\
  4867.     ctx.moveTo(zero_x,ny);\
  4868.     ctx.lineTo(xsize,ny);\
  4869.     num++;\
  4870.    };\
  4871.  };\
  4872.  ctx.stroke();\
  4873.  ctx.closePath();\
  4874.  ctx.lineWidth = 2;\
  4875.  ctx.beginPath();\
  4876.  ctx.strokeStyle = \"rgba(\"+majorcolor+\",\"+opacity+\")\";\
  4877.  for(var y = zero_y - snor_y ; y > 0 ;y = y - step_y){\
  4878.   ctx.moveTo(zero_x,y);\
  4879.   ctx.lineTo(zero_x+12,y);\
  4880.  };\
  4881.  for(var y = zero_y - snor_y ; y > 0 ;y = y - minor_step_y){\
  4882.   ctx.moveTo(zero_x,y);\
  4883.   ctx.lineTo(zero_x+6,y);\
  4884.  };\
  4885.  ctx.stroke();\
  4886.  ctx.closePath();\
  4887. };\
  4888. ymin = ystart - (ymajor*(ysize - zero_y + snor_y)/step_y);\
  4889. if( typeof legend%d  !== 'undefined' ){\
  4890.  ctx.globalAlpha = 1.0;\
  4891.  var y_offset = 2*font_size;\
  4892.  var txt;var txt_size;\
  4893.  var x_offset = xsize - 2*font_size;\
  4894.  var l_length = legend%d.length;var barcolor = new Array();\
  4895.  if( typeof legendcolors%d !== 'undefined' ){\
  4896.   for(var p = 0 ; p < l_length ; p++){\
  4897.    barcolor[p] = legendcolors%d[p];\
  4898.   };\
  4899.  }else{\
  4900.   if( barcolor.length == 0 ){\
  4901.    for(var p = 0 ; p < l_length ; p++){\
  4902.     barcolor[p] = stroke_color;\
  4903.    };\
  4904.   };\
  4905.  };\
  4906.  for(var p = 0; p < l_length; p++){\
  4907.   ctx.fillStyle = barcolor[p];\
  4908.   txt = legend%d[p];\
  4909.   txt_size = ctx.measureText(txt).width;\
  4910.   ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  4911.   y_offset = parseInt(y_offset + 1.5*font_size);\
  4912.  };\
  4913. };\
  4914. if( typeof xaxislabel !== 'undefined' ){\
  4915.   ctx.fillStyle = \'#000000\';\
  4916.   var txt_size = ctx.measureText(xaxislabel).width + 4 ;\
  4917.   ctx.fillText(xaxislabel,xsize - txt_size, zero_y - 7);\
  4918. };\
  4919. if( typeof yaxislabel !== 'undefined'){\
  4920.   ctx.save();\
  4921.   ctx.fillStyle = \'#000000\';\
  4922.   var txt_size = ctx.measureText(yaxislabel).width;\
  4923.   ctx.translate(zero_x+8 + font_size,txt_size+font_size);\
  4924.   ctx.rotate(-0.5*Math.PI);\
  4925.   ctx.fillText(yaxislabel,0,0);\
  4926.   ctx.save();\
  4927. };\
  4928. };\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);
  4929.     break;
  4930.  
  4931.     case DRAW_GRID:/* not used for userdraw */
  4932. fprintf(js_include_file,"\n<!-- draw grid -->\n\
  4933. 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){\
  4934. var obj;\
  4935. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  4936. obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  4937. }\
  4938. else\
  4939. {\
  4940. obj = create_canvas%d(canvas_type,xsize,ysize);\
  4941. };\
  4942. var ctx = obj.getContext(\"2d\");\
  4943. ctx.clearRect(0,0,xsize,ysize);\
  4944. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  4945. ctx.save();\
  4946. if( use_translate == 1 ){ctx.translate(vector[0],vector[1]);};\
  4947. if( use_rotate == 1 ){ctx.translate(x2px(0),y2px(0));ctx.rotate(angle*Math.PI/180);ctx.translate(-1*(x2px(0)),-1*(y2px(0)));};\
  4948. var stroke_color = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  4949. ctx.fillStyle = \"rgba(\"+font_color+\",\"+1.0+\")\";\
  4950. var axis_color = \"rgba(\"+axis_color+\",\"+stroke_opacity+\")\";\
  4951. ctx.font = font_family;\
  4952. var xstep = xsize*xmajor/(xmax - xmin);\
  4953. var ystep = ysize*ymajor/(ymax - ymin);\
  4954. var x2step = xstep / xminor;\
  4955. var y2step = ystep / yminor;\
  4956. var zero_x;var zero_y;var f_x;var f_y;\
  4957. if(xmin < 0 ){zero_x = x2px(0);f_x = 1;}else{zero_x = x2px(xmin);f_x = -1;}\
  4958. if(ymin < 0 ){zero_y = y2px(0);f_y = 1;}else{zero_y = y2px(ymin);f_y = -1;}\
  4959. ctx.beginPath();\
  4960. ctx.lineWidth = line_width;\
  4961. ctx.strokeStyle = stroke_color;\
  4962. for(var p = zero_x ; p < xsize; p = p + xstep){\
  4963. ctx.moveTo(p,0);\
  4964. ctx.lineTo(p,ysize);\
  4965. };\
  4966. for(var p = zero_x ; p > 0; p = p - xstep){\
  4967. ctx.moveTo(p,0);\
  4968. ctx.lineTo(p,ysize);\
  4969. };\
  4970. for(var p = zero_y ; p < ysize; p = p + ystep){\
  4971. ctx.moveTo(0,p);\
  4972. ctx.lineTo(xsize,p);\
  4973. };\
  4974. for(var p = zero_y ; p > 0; p = p - ystep){\
  4975. ctx.moveTo(0,p);\
  4976. ctx.lineTo(xsize,p);\
  4977. };\
  4978. if( typeof xaxislabel !== 'undefined' ){\
  4979. ctx.save();\
  4980. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  4981. var corr =  ctx.measureText(xaxislabel).width;\
  4982. ctx.fillText(xaxislabel,xsize - 1.5*corr,zero_y - tics_length - 0.4*font_size);\
  4983. ctx.restore();\
  4984. };\
  4985. if( typeof yaxislabel !== 'undefined' ){\
  4986. ctx.save();\
  4987. ctx.font = \"italic \"+font_size+\"px Ariel\";\
  4988. corr =  ctx.measureText(yaxislabel).width;\
  4989. ctx.translate(zero_x+tics_length + font_size,corr+font_size);\
  4990. ctx.rotate(-0.5*Math.PI);\
  4991. ctx.fillText(yaxislabel,0,0);\
  4992. ctx.restore();\
  4993. };\
  4994. ctx.stroke();\
  4995. ctx.closePath();\
  4996. if( use_axis == 1 ){\
  4997. ctx.beginPath();\
  4998. ctx.strokeStyle = stroke_color;\
  4999. ctx.lineWidth = 0.6*line_width;\
  5000. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5001.  ctx.moveTo(p,0);\
  5002.  ctx.lineTo(p,ysize);\
  5003. };\
  5004. for(var p = zero_x ; p > 0; p = p - x2step){\
  5005.  ctx.moveTo(p,0);\
  5006.  ctx.lineTo(p,ysize);\
  5007. };\
  5008. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5009.  ctx.moveTo(0,p);\
  5010.  ctx.lineTo(xsize,p);\
  5011. };\
  5012. for(var p = zero_y ; p > 0; p = p - y2step){\
  5013.  ctx.moveTo(0,p);\
  5014.  ctx.lineTo(xsize,p);\
  5015. };\
  5016. ctx.stroke();\
  5017. ctx.closePath();\
  5018. ctx.beginPath();\
  5019. ctx.lineWidth = 2*line_width;\
  5020. ctx.strokeStyle = axis_color;\
  5021. ctx.moveTo(0,zero_y);\
  5022. ctx.lineTo(xsize,zero_y);\
  5023. ctx.moveTo(zero_x,0);\
  5024. ctx.lineTo(zero_x,ysize);\
  5025. ctx.stroke();\
  5026. ctx.closePath();\
  5027. ctx.lineWidth = line_width+0.5;\
  5028. ctx.beginPath();\
  5029. for(var p = zero_x ; p < xsize; p = p + xstep){\
  5030.  ctx.moveTo(p,zero_y-tics_length);\
  5031.  ctx.lineTo(p,zero_y+tics_length);\
  5032. };\
  5033. for(var p = zero_x ; p > 0; p = p - xstep){\
  5034.  ctx.moveTo(p,zero_y-tics_length);\
  5035.  ctx.lineTo(p,zero_y+tics_length);\
  5036. };\
  5037. for(var p = zero_y ; p < ysize; p = p + ystep){\
  5038.  ctx.moveTo(zero_x-tics_length,p);\
  5039.  ctx.lineTo(zero_x+tics_length,p);\
  5040. };\
  5041. for(var p = zero_y ; p > 0; p = p - ystep){\
  5042.  ctx.moveTo(zero_x-tics_length,p);\
  5043.  ctx.lineTo(zero_x+tics_length,p);\
  5044. };\
  5045. for(var p = zero_x ; p < xsize; p = p + x2step){\
  5046.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5047.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5048. };\
  5049. for(var p = zero_x ; p > 0; p = p - x2step){\
  5050.  ctx.moveTo(p,zero_y-0.5*tics_length);\
  5051.  ctx.lineTo(p,zero_y+0.5*tics_length);\
  5052. };\
  5053. for(var p = zero_y ; p < ysize; p = p + y2step){\
  5054.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5055.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5056. };\
  5057. for(var p = zero_y ; p > 0; p = p - y2step){\
  5058.  ctx.moveTo(zero_x-0.5*tics_length,p);\
  5059.  ctx.lineTo(zero_x+0.5*tics_length,p);\
  5060. };\
  5061. ctx.stroke();\
  5062. ctx.closePath();\
  5063. if( use_axis_numbering == 1 ){\
  5064.  var shift = zero_y+2*font_size;var flip=0;var skip=0;var corr;var cnt;var disp_cnt;var prec;\
  5065.  if( x_strings != null ){\
  5066.   var f = 1.4;\
  5067.   var len = x_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"xaxis number unpaired:  text missing ! \");return;};\
  5068.   for(var p = 0 ; p < len ; p = p+2){\
  5069.     var x_nums = x2px(eval(x_strings[p]));\
  5070.     var x_text = x_strings[p+1];\
  5071.     corr = ctx.measureText(x_text).width;\
  5072.     skip = 1.2*corr/xstep;\
  5073.     if( zero_y+2*font_size > ysize ){shift = ysize - 2*font_size;};\
  5074.     if( skip > 1 ){if(flip == 0 ){flip = 1; shift = shift + font_size;}else{flip = 0; shift = shift - font_size;}};\
  5075.     ctx.fillText(x_text,parseInt(x_nums-0.5*corr),shift);\
  5076.   }\
  5077.  }\
  5078.  else\
  5079.  {\
  5080.   corr=0;skip = 1;cnt = px2x(zero_x);\
  5081.   prec = Math.log(precision)/(Math.log(10));\
  5082.   for( var p = zero_x ; p < xsize ; p = p+xstep){\
  5083.    if(skip == 0 ){\
  5084.      disp_cnt = cnt.toFixed(prec);\
  5085.      corr = ctx.measureText(disp_cnt).width;\
  5086.      skip = parseInt(1.2*corr/xstep);\
  5087.      ctx.fillText(disp_cnt,p-0.5*corr,parseInt(zero_y+(1.4*f_x*font_size)));\
  5088.    }\
  5089.    else\
  5090.    {\
  5091.     skip--;\
  5092.    };\
  5093.    cnt = cnt + xmajor;\
  5094.   };\
  5095.   cnt = px2x(zero_x);skip = 1;\
  5096.   for( var p = zero_x ; p > 0 ; p = p-xstep){\
  5097.    if(skip == 0 ){\
  5098.     disp_cnt = cnt.toFixed(prec);\
  5099.     corr = ctx.measureText(disp_cnt).width;\
  5100.     skip = parseInt(1.2*corr/xstep);\
  5101.     ctx.fillText(disp_cnt,p-0.5*corr,parseInt(zero_y+(1.4*f_x*font_size)));\
  5102.    }\
  5103.    else\
  5104.    {\
  5105.     skip--;\
  5106.    };\
  5107.    cnt = cnt - xmajor;\
  5108.   };\
  5109.  };\
  5110.  if( y_strings != null ){\
  5111.   var len = y_strings.length;if((len/2+0.5)%%2 == 0){ alert(\"yaxis number unpaired:  text missing ! \");return;};\
  5112.   for(var p = 0 ; p < len ; p = p+2){\
  5113.    var y_nums = y2px(eval(y_strings[p]));\
  5114.    var y_text = y_strings[p+1];\
  5115.    var f = 1.4;\
  5116.    corr = 2 + tics_length + ctx.measureText(y_text).width;\
  5117.    if( corr > zero_x){corr = parseInt(zero_x+2); }\
  5118.    ctx.fillText(y_text,zero_x - corr,y_nums);\
  5119.   };\
  5120.  }\
  5121.  else\
  5122.  {\
  5123.   corr = 0;cnt = px2y(zero_y);skip = 1;\
  5124.   for( var p = zero_y ; p < ysize ; p = p+ystep){\
  5125.    if(skip == 0 ){\
  5126.     skip = parseInt(1.4*font_size/ystep);\
  5127.     disp_cnt = cnt.toFixed(prec);\
  5128.     if(f_y == 1){corr = 2 + tics_length + ctx.measureText(disp_cnt).width;}\
  5129.     ctx.fillText(disp_cnt,parseInt(zero_x - corr),parseInt(p+(0.4*font_size)));\
  5130.    }\
  5131.    else\
  5132.    {\
  5133.     skip--;\
  5134.    };\
  5135.    cnt = cnt - ymajor;\
  5136.   }\
  5137.   corr = 0;cnt = px2y(zero_y);skip = 1;\
  5138.   for( var p = zero_y ; p > 0 ; p = p-ystep){\
  5139.    if(skip == 0 ){\
  5140.     skip = parseInt(1.4*font_size/ystep);\
  5141.     disp_cnt = cnt.toFixed(prec);\
  5142.     if(f_y == 1){corr = 2 + tics_length + ctx.measureText(disp_cnt).width;}\
  5143.     ctx.fillText(disp_cnt,parseInt(zero_x - corr),parseInt(p+(0.4*font_size)));\
  5144.    }\
  5145.    else\
  5146.    {\
  5147.     skip--;\
  5148.    };\
  5149.    cnt = cnt + ymajor;\
  5150.   }\
  5151.  };\
  5152. };\
  5153. ctx.strokeStyle = stroke_color;\
  5154. ctx.lineWidth = 2;\
  5155. ctx.beginPath();\
  5156. ctx.rect(0,0,xsize,ysize);\
  5157. ctx.closePath();\
  5158. ctx.stroke();\
  5159. };\
  5160. if( typeof linegraph_0 !== 'undefined' ){\
  5161. ctx.restore();\
  5162. ctx.save();\
  5163. ctx.globalAlpha = 1.0;\
  5164. var i = 0;\
  5165. var line_name = eval('linegraph_'+i);\
  5166. while ( typeof line_name !== 'undefined' ){\
  5167.  ctx.strokeStyle = 'rgba('+line_name[0]+','+stroke_opacity+')';\
  5168.  ctx.lineWidth = parseInt(line_name[1]);\
  5169.  if(line_name[2] == \"1\"){\
  5170.   var d1 = parseInt(line_name[3]);\
  5171.   var d2 = parseInt(line_name[4]);\
  5172.   if(ctx.setLineDash){ ctx.setLineDash(d1,d2); } else { ctx.mozDash = [d1,d2];};\
  5173.  }\
  5174.  else\
  5175.  {\
  5176.  if(ctx.setLineDash){ctx.setLineDash = null;}\
  5177.  if(ctx.mozDash){ctx.mozDash = null;}\
  5178.  };\
  5179.  var data_x = new Array();\
  5180.  var data_y = new Array();\
  5181.  var lb = line_name.length;\
  5182.  var idx = 0;\
  5183.  for( var p = 5 ; p < lb ; p = p + 2 ){\
  5184.   data_x[idx] = x2px(line_name[p]);\
  5185.   data_y[idx] = y2px(line_name[p+1]);\
  5186.   idx++;\
  5187.  };\
  5188.  for( var p = 0; p < idx ; p++){\
  5189.   ctx.beginPath();\
  5190.   ctx.moveTo(data_x[p],data_y[p]);\
  5191.   ctx.lineTo(data_x[p+1],data_y[p+1]);\
  5192.   ctx.stroke();\
  5193.   ctx.closePath();\
  5194.  };\
  5195.  i++;\
  5196.  try{ line_name = eval('linegraph_'+i); }catch(e){ break; }\
  5197. };\
  5198. };\
  5199. var barcolor = new Array();\
  5200. if( typeof barchart%d  !== 'undefined' ){\
  5201. ctx.restore();\
  5202. ctx.save();\
  5203. ctx.globalAlpha = 1.0;\
  5204. var bar_x = new Array();\
  5205. var bar_y = new Array();\
  5206. var lb = barchart%d.length;\
  5207. var idx = 0;\
  5208. for( var p = 0 ; p < lb ; p = p + 3 ){\
  5209.  bar_x[idx] = x2px(barchart%d[p]);\
  5210.  bar_y[idx] = y2px(barchart%d[p+1]);\
  5211.  barcolor[idx] = barchart%d[p+2];\
  5212.  idx++;\
  5213. };\
  5214. var dx = parseInt(0.6*xstep);\
  5215. ctx.globalAlpha = fill_opacity;\
  5216. for( var p = 0; p < idx ; p++ ){\
  5217.  ctx.beginPath();\
  5218.  ctx.strokeStyle = barcolor[p];\
  5219.  ctx.fillStyle = barcolor[p];\
  5220.  ctx.rect(bar_x[p]-0.5*dx,bar_y[p],dx,zero_y - bar_y[p]);\
  5221.  ctx.fill();\
  5222.  ctx.stroke();\
  5223.  ctx.closePath();\
  5224. };\
  5225. };\
  5226. if( typeof legend%d  !== 'undefined' ){\
  5227. ctx.globalAlpha = 1.0;\
  5228. ctx.font = \"bold \"+font_size+\"px Ariel\";\
  5229. var y_offset = 2*font_size;\
  5230. var txt;var txt_size;\
  5231. var x_offset = xsize - 2*font_size;\
  5232. var l_length = legend%d.length;\
  5233. if( typeof legendcolors%d !== 'undefined' ){\
  5234.  for(var p = 0 ; p < l_length ; p++){\
  5235.    barcolor[p] = legendcolors%d[p];\
  5236.  };\
  5237. }else{\
  5238.  if( barcolor.length == 0 ){\
  5239.   for(var p = 0 ; p < l_length ; p++){\
  5240.    barcolor[p] = stroke_color;\
  5241.   };\
  5242.  };\
  5243. };\
  5244. for(var p = 0; p < l_length; p++){\
  5245.  ctx.fillStyle = barcolor[p];\
  5246.  txt = legend%d[p];\
  5247.  txt_size = ctx.measureText(txt).width;\
  5248.  ctx.fillText(legend%d[p],x_offset - txt_size, y_offset);\
  5249.  y_offset = parseInt(y_offset + 1.5*font_size);\
  5250. };\
  5251. };\
  5252. ctx.restore();\
  5253. return;\
  5254. };",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);
  5255.     break;
  5256.  
  5257.     case DRAW_PIECHART:
  5258. fprintf(js_include_file,"\n<!-- draw piechars -->\n\
  5259. function draw_piechart(canvas_type,x_center,y_center,radius, data_color_list,fill_opacity,font_size,font_family){\
  5260. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5261.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5262. }\
  5263. else\
  5264. {\
  5265.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5266. };\
  5267. var ld = data_color_list.length;\
  5268. var sum = 0;\
  5269. var idx = 0;\
  5270. var colors = new Array();\
  5271. var data = new Array();\
  5272. for(var p = 0;p < ld; p = p + 2){\
  5273.  data[idx] = parseFloat(data_color_list[p]);\
  5274.  sum = sum + data[idx];\
  5275.  colors[idx] = data_color_list[p+1];\
  5276.  idx++;\
  5277. };\
  5278. var ctx = obj.getContext(\"2d\");\
  5279. ctx.save();\
  5280. var angle;\
  5281. var angle_end = 0;\
  5282. var offset = Math.PI / 2;\
  5283. ctx.globalAlpha = fill_opacity;\
  5284. for(var p=0; p < idx; p++){\
  5285.  ctx.beginPath();\
  5286.  ctx.fillStyle = colors[p];\
  5287.  ctx.moveTo(x_center,y_center);\
  5288.  angle = Math.PI * (2 * data[p] / sum);\
  5289.  ctx.arc(x_center,y_center, radius, angle_end - offset, angle_end + angle - offset, false);\
  5290.  ctx.lineTo(x_center, y_center);\
  5291.  ctx.fill();\
  5292.  ctx.closePath();\
  5293.  angle_end  = angle_end + angle;\
  5294. };\
  5295. if( typeof legend%d  !== 'undefined' ){\
  5296.  ctx.globalAlpha = 1.0;\
  5297.  ctx.font = font_size+\"px \"+font_family;\
  5298.  var y_offset = font_size; \
  5299.  var x_offset = 0;\
  5300.  var txt;var txt_size;\
  5301.  for(var p = 0; p < idx; p++){\
  5302.   ctx.fillStyle = colors[p];\
  5303.   txt = legend%d[p];\
  5304.   txt_size = ctx.measureText(txt).width;\
  5305.   if( x_center + radius + txt_size > xsize ){ x_offset =  x_center + radius + txt_size - xsize;} else { x_offset = 0; };\
  5306.   ctx.fillText(legend%d[p],x_center + radius - x_offset, y_center - radius + y_offset);\
  5307.   y_offset = parseInt(y_offset + 1.5*font_size);\
  5308.  };\
  5309. };\
  5310. ctx.restore();\
  5311. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5312.  
  5313.     break;
  5314.     case DRAW_ARCS:
  5315. fprintf(js_include_file,"\n<!-- draw arcs -->\n\
  5316. 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){\
  5317. var obj;\
  5318. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5319.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5320. }\
  5321. else\
  5322. {\
  5323.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5324. };\
  5325. var ctx = obj.getContext(\"2d\");\
  5326. ctx.save();\
  5327. if( use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{if(ctx.mozDash){ ctx.mozDash = [dashtype0,dashtype1];};};};\
  5328. if( use_translate == 1 ){ctx.translate(vector[0],vector[1]);};\
  5329. if( use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);};\
  5330. if(end < start){var tmp = end;end = start;start=tmp;};\
  5331. start=360-start;\
  5332. end=360-end;\
  5333. ctx.lineWidth = line_width;\
  5334. ctx.strokeStyle =  \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5335. if( use_filled == 1 ){\
  5336.  ctx.beginPath();\
  5337.  ctx.fillStyle = \"rgba(\"+fill_color+\",\"+fill_opacity+\")\";\
  5338.  var x1 = xc + r*Math.cos(Math.PI*start/180);\
  5339.  var y1 = yc + r*Math.sin(Math.PI*start/180);\
  5340.  var x2 = xc + r*Math.cos(Math.PI*end/180);\
  5341.  var y2 = yc + r*Math.sin(Math.PI*end/180);\
  5342.  ctx.beginPath();\
  5343.  ctx.moveTo(x1,y1);\
  5344.  ctx.lineTo(xc,yc);\
  5345.  ctx.moveTo(xc,yc);\
  5346.  ctx.lineTo(x2,y2);\
  5347.  ctx.closePath();\
  5348.  ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5349.  ctx.fill();\
  5350.  ctx.stroke();\
  5351. }\
  5352. else\
  5353. {\
  5354.    ctx.beginPath();\
  5355.    ctx.arc(xc, yc, r, start*(Math.PI / 180), end*(Math.PI / 180),true);\
  5356.    ctx.stroke();\
  5357.    ctx.closePath();\
  5358. }\
  5359. ctx.restore();\
  5360. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5361.  
  5362.     break;
  5363.     case DRAW_TEXTS:
  5364. fprintf(js_include_file,"\n<!-- draw text -->\n\
  5365. draw_text = function(canvas_type,x,y,font_size,font_family,stroke_color,stroke_opacity,angle2,text,use_rotate,angle,use_translate,vector){\
  5366.  var obj;\
  5367.  if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5368.   obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5369.  }\
  5370.  else\
  5371.  {\
  5372.   obj = create_canvas%d(canvas_type,xsize,ysize);\
  5373.  };\
  5374.  var ctx = obj.getContext(\"2d\");\
  5375.  if(angle2 == 0 && angle != 0){\
  5376.   ctx.save();\
  5377.   if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5378.   if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5379.  };\
  5380.  if( font_family.indexOf('px') != null ){\
  5381.   ctx.font = font_family;\
  5382.  }\
  5383.  else\
  5384.  {\
  5385.   ctx.font = \"+font_size+'px '+font_family \";\
  5386.  };\
  5387.  ctx.fillStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5388.  if(angle2 != 0){\
  5389.   ctx.save();\
  5390.   ctx.translate(x,y);\
  5391.   ctx.rotate((360-angle2)*(Math.PI / 180));\
  5392.   ctx.fillText(text,0,0);\
  5393.   ctx.restore();\
  5394.  }else{ctx.fillText(text,x,y);};\
  5395. ctx.restore();\
  5396. return;\
  5397. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5398.  
  5399.     break;
  5400.     case DRAW_CURVE:
  5401. fprintf(js_include_file,"\n<!-- draw curve -->\n\
  5402. 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){\
  5403. var obj;\
  5404. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5405.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5406. }\
  5407. else\
  5408. {\
  5409.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5410. };\
  5411. var ctx = obj.getContext(\"2d\");\
  5412. ctx.save();\
  5413. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5414. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5415. ctx.beginPath();ctx.lineWidth = line_width;\
  5416. if(use_dashed == 1){if(ctx.setLineDash){ctx.setLineDash([dashtype0,dashtype1]);}else{ctx.mozDash = [dashtype0,dashtype1];};};\
  5417. ctx.strokeStyle = \"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5418. ctx.moveTo(x2px(x_points[0]),y2px(y_points[0]));\
  5419. for(var p = 1 ; p < x_points.length ; p++){\
  5420.  if( y2px(y_points[p]) > -5 && y2px(y_points[p]) < ysize+5 ){\
  5421.  ctx.lineTo(x2px(x_points[p]),y2px(y_points[p]));\
  5422.  }\
  5423.  else\
  5424.  {\
  5425.   ctx.stroke();\
  5426.   ctx.beginPath();\
  5427.   p++;\
  5428.   ctx.moveTo(x2px(x_points[p]),y2px(y_points[p]));\
  5429.  };\
  5430. };\
  5431. ctx.stroke();\
  5432. ctx.restore();\
  5433. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5434.     break;
  5435.  
  5436.     case DRAW_INPUTS:
  5437. fprintf(js_include_file,"\n<!-- draw input fields -->\n\
  5438. draw_inputs = function(root_id,input_cnt,x,y,size,readonly,style,value){\
  5439. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5440. var input = document.createElement(\"input\");\
  5441. input.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5442. input.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5443. input.setAttribute(\"size\",size);\
  5444. input.setAttribute(\"value\",value);\
  5445. if( readonly == 0 ){ input.setAttribute(\"readonly\",\"readonly\");};\
  5446. canvas_div.appendChild(input);};");
  5447.     break;
  5448.  
  5449.     case DRAW_TEXTAREAS:
  5450. fprintf(js_include_file,"\n<!-- draw text area inputfields -->\n\
  5451. draw_textareas = function(root_id,input_cnt,x,y,cols,rows,readonly,style,value){\
  5452. var canvas_div = document.getElementById(\"canvas_div\"+root_id);\
  5453. var textarea = document.createElement(\"textarea\");\
  5454. textarea.setAttribute(\"id\",\"canvas_input\"+input_cnt);\
  5455. textarea.setAttribute(\"style\",\"position:absolute;left:\"+x+\"px;top:\"+y+\"px;\"+style);\
  5456. textarea.setAttribute(\"cols\",cols);\
  5457. textarea.setAttribute(\"rows\",rows);\
  5458. textarea.innerHTML = value;\
  5459. canvas_div.appendChild(textarea);};");
  5460.     break;
  5461.  
  5462. case DRAW_PIXELS:
  5463. fprintf(js_include_file,"\n<!-- draw pixel -->\n\
  5464. draw_setpixel = function(x,y,color,opacity,pixelsize){\
  5465. var canvas = create_canvas%d(10,xsize,ysize);\
  5466. var d = 0.5*pixelsize;\
  5467. var ctx = canvas.getContext(\"2d\");\
  5468. ctx.fillStyle = \"rgba(\"+color+\",\"+opacity+\")\";\
  5469. ctx.clearRect(0,0,xsize,ysize);\
  5470. for(var p=0; p<x.length;p++){\
  5471.  ctx.fillRect( x2px(x[p]) - d, y2px(y[p]) - d , pixelsize, pixelsize );\
  5472. };\
  5473. ctx.fill();ctx.stroke();\
  5474. };",canvas_root_id);
  5475. break;
  5476.  
  5477. case DRAW_CLOCK:
  5478. fprintf(js_include_file,"\n<!-- begin command clock -->\n\
  5479. var clock_canvas = create_canvas%d(%d,xsize,ysize);\
  5480. var clock_ctx = clock_canvas.getContext(\"2d\");\
  5481. var clock = function(xc,yc,radius,H,M,S,type,interaction,h_color,m_color,s_color,bg_color,fg_color){\
  5482. clock_ctx.save();\
  5483. this.type = type || 0;\
  5484. this.interaction = interaction || 0;\
  5485. this.H = H || parseInt(110*(Math.random()));\
  5486. this.M = M || parseInt(590*(Math.random()));\
  5487. this.S = S || parseInt(590*(Math.random()));\
  5488. this.xc = xc || xsize/2;\
  5489. this.yc = yc || ysize/2;\
  5490. this.radius = radius || xsize/4;\
  5491. var font_size = parseInt(0.2*this.radius);\
  5492. this.H_color = h_color || \"blue\";\
  5493. this.M_color = m_color || \"blue\";\
  5494. this.S_color = s_color || \"blue\";\
  5495. this.fg_color = fg_color || \"red\";\
  5496. this.bg_color = bg_color || \"white\";\
  5497. clock_ctx.translate(this.xc,this.yc);\
  5498. clock_ctx.beginPath();\
  5499. clock_ctx.arc(0,0,this.radius,0,2*Math.PI,false);\
  5500. clock_ctx.fillStyle = this.bg_color;\
  5501. clock_ctx.fill();\
  5502. clock_ctx.closePath();\
  5503. clock_ctx.beginPath();\
  5504. clock_ctx.font = font_size+\"px Arial\";\
  5505. clock_ctx.fillStyle = this.fg_color;\
  5506. clock_ctx.textAlign = \"center\";\
  5507. clock_ctx.textBaseline = 'middle';\
  5508. var angle;var x1,y1,x2,y2;\
  5509. var angle_cos;var angle_sin;\
  5510. switch(type){\
  5511. case 0:clock_ctx.beginPath();\
  5512. for(var p = 1; p <= 12 ; p++){\
  5513.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5514.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5515.  x1 = 0.8*angle_cos;y1 = 0.8*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5516.  clock_ctx.moveTo(x1,y1);\
  5517.  clock_ctx.lineTo(x2,y2);\
  5518. };\
  5519. for(var p = 1; p <= 60 ; p++){\
  5520.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5521.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5522.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5523.  clock_ctx.moveTo(x1,y1);\
  5524.  clock_ctx.lineTo(x2,y2);\
  5525. };\
  5526. clock_ctx.closePath();\
  5527. clock_ctx.stroke();\
  5528. break;\
  5529. case 1:\
  5530. 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;\
  5531. case 2:for(var p= 1; p <= 12 ; p++){ angle = (p - 3) * (Math.PI * 2) / 12;x1 = 1.1*this.radius*Math.cos(angle);y1 = 1.1*this.radius*Math.sin(angle);clock_ctx.fillText(p, x1, y1);};\
  5532. clock_ctx.beginPath();\
  5533. for(var p = 1; p <= 12 ; p++){\
  5534.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 12));\
  5535.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 12));\
  5536.  x1 = 0.9*angle_cos;y1 = 0.9*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5537.  clock_ctx.moveTo(x1,y1);\
  5538.  clock_ctx.lineTo(x2,y2);\
  5539. };\
  5540. for(var p = 1; p <= 60 ; p++){\
  5541.  angle_cos = this.radius*(Math.cos(p * (Math.PI * 2) / 60));\
  5542.  angle_sin = this.radius*(Math.sin(p * (Math.PI * 2) / 60));\
  5543.  x1 = 0.95*angle_cos;y1 = 0.95*angle_sin;x2 = angle_cos;y2 = angle_sin;\
  5544.  clock_ctx.moveTo(x1,y1);\
  5545.  clock_ctx.lineTo(x2,y2);\
  5546. };\
  5547. clock_ctx.closePath();\
  5548. clock_ctx.stroke();\
  5549. break;\
  5550. };\
  5551. angle = (this.H - 3 + this.M/60 ) * 2 * Math.PI / 12;\
  5552. clock_ctx.rotate(angle);\
  5553. clock_ctx.beginPath();\
  5554. clock_ctx.moveTo(-3, -2);\
  5555. clock_ctx.lineTo(-3, 2);\
  5556. clock_ctx.lineTo(this.radius * 0.7, 1);\
  5557. clock_ctx.lineTo(this.radius  * 0.7, -1);\
  5558. clock_ctx.fillStyle = this.H_color;\
  5559. clock_ctx.fill();\
  5560. clock_ctx.rotate(-angle);\
  5561. angle = (this.M - 15 + this.S/60) * 2 * Math.PI / 60;\
  5562. clock_ctx.rotate(angle);\
  5563. clock_ctx.beginPath();\
  5564. clock_ctx.moveTo(-3, -2);\
  5565. clock_ctx.lineTo(-3, 2);\
  5566. clock_ctx.lineTo(this.radius  * 0.8, 1);\
  5567. clock_ctx.lineTo(this.radius  * 0.8, -1);\
  5568. clock_ctx.fillStyle = this.M_color;\
  5569. clock_ctx.fill();\
  5570. clock_ctx.rotate(-angle);\
  5571. angle = (this.S - 15) * 2 * Math.PI / 60;\
  5572. clock_ctx.rotate(angle);\
  5573. clock_ctx.beginPath();\
  5574. clock_ctx.moveTo(0,0);\
  5575. clock_ctx.lineTo(this.radius  * 0.95, 0);\
  5576. clock_ctx.lineTo(this.radius  * 0.9, -1);\
  5577. clock_ctx.strokeStyle = this.S_color;\
  5578. clock_ctx.stroke();\
  5579. clock_ctx.restore();\
  5580. };",canvas_root_id,CLOCK_CANVAS);
  5581. break;
  5582.  
  5583. case DRAW_LATTICE:
  5584. fprintf(js_include_file,"\n<!-- draw lattice -->\n\
  5585. 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){\
  5586. var obj;\
  5587. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\
  5588.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\
  5589. }\
  5590. else\
  5591. {\
  5592.  obj = create_canvas%d(canvas_type,xsize,ysize);\
  5593. };\
  5594. var ctx = obj.getContext(\"2d\");\
  5595. ctx.save();\
  5596. if(use_translate == 1 ){ctx.translate(vector[0],vector[1]);}\
  5597. if(use_rotate == 1 ){ctx.rotate(angle*Math.PI/180);}\
  5598. ctx.fillStyle =\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5599. ctx.strokeStyle=\"rgba(\"+stroke_color+\",\"+stroke_opacity+\")\";\
  5600. var radius = line_width;\
  5601. var x = 0;\
  5602. var y = 0;\
  5603. var x_step_px = xsize/(xmax-xmin);\
  5604. var y_step_px = ysize/(ymax-ymin);\
  5605. var xv1 = dx1*x_step_px;\
  5606. var yv1 = dy1*y_step_px;\
  5607. var xv2 = dx2*x_step_px;\
  5608. var yv2 = dy2*y_step_px;\
  5609. for(var p = 0; p < n1 ;p++){\
  5610.  x = p*xv1 + x0;\
  5611.  y = p*yv1 + y0;\
  5612.  for(var c = 0; c < n2 ; c++){\
  5613.   ctx.beginPath();\
  5614.   ctx.arc(x+c*xv2,y+c*yv2,radius,0,2*Math.PI,false);\
  5615.   ctx.fill();\
  5616.   ctx.stroke();\
  5617.   ctx.closePath();\
  5618.  };\
  5619. };\
  5620. ctx.restore();\
  5621. return;\
  5622. };",canvas_root_id,canvas_root_id,canvas_root_id);
  5623.     break;
  5624. case DRAW_XYLOGSCALE:
  5625. fprintf(js_include_file,"\n<!-- draw xylogscale -->\n\
  5626. 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\
  5627. var obj;\n\
  5628. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5629.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5630. }\n\
  5631. else\n\
  5632. {\n\
  5633.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5634. };\n\
  5635. var ctx = obj.getContext(\"2d\");\n\
  5636. ctx.clearRect(0,0,xsize,ysize);\
  5637. ctx.save();\n\
  5638. var xmarge;var ymarge;var x_e;var y_e;var num;var corr;var xtxt;var ytxt;\
  5639. var x_min = Math.log(xmin)/Math.log(xlogbase);\n\
  5640. var x_max = Math.log(xmax)/Math.log(xlogbase);\n\
  5641. var y_min = Math.log(ymin)/Math.log(ylogbase);\n\
  5642. var y_max = Math.log(ymax)/Math.log(ylogbase);\n\
  5643. if(use_axis_numbering == 1){\
  5644.  ctx.font = font_family;\n\
  5645.  xmarge = ctx.measureText(ylogbase+'^'+y_max.toFixed(0)+' ').width;\n\
  5646.  ymarge = parseInt(1.5*font_size);\n\
  5647.  ctx.save();\n\
  5648.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5649.  ctx.rect(0,0,xmarge,ysize);\n\
  5650.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5651.  ctx.fill();\n\
  5652.  ctx.restore();\n\
  5653. }else{xmarge = 0;ymarge = 0;};\n\
  5654. if( typeof xaxislabel !== 'undefined' ){\
  5655.  ctx.save();\n\
  5656.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5657.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5658.  corr =  ctx.measureText(xaxislabel).width;\n\
  5659.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5660.  ctx.restore();\n\
  5661. };\n\
  5662. if( typeof yaxislabel !== 'undefined' ){\
  5663.  ctx.save();\n\
  5664.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5665.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5666.  corr = ctx.measureText(yaxislabel).width;\n\
  5667.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5668.  ctx.rotate(-0.5*Math.PI);\n\
  5669.  ctx.fillText(yaxislabel,0,0);\n\
  5670.  ctx.restore();\n\
  5671. };\n\
  5672. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5673. ctx.lineWidth = line_width;\n\n\
  5674. for(var p = x_min; p <= x_max ; p++){\n\
  5675.  num = Math.pow(xlogbase,p);\n\n\
  5676.  for(var i = 1 ; i < xlogbase ; i++){\n\
  5677.   x_e = x2px(i*num);\n\n\
  5678.   if( i == 1 ){\
  5679.    ctx.lineWidth = line_width;\n\n\
  5680.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\n\
  5681.    if( use_axis_numbering == 1 && p > x_min){\
  5682.      xtxt = xlogbase+'^'+p.toFixed(0);\n\
  5683.      corr = 0.5*(ctx.measureText(xtxt).width);\n\
  5684.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\n\
  5685.    };\n\
  5686.   }else{\
  5687.    ctx.lineWidth = 0.2*line_width;\n\n\
  5688.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\n\
  5689.   };\n\
  5690.   if( x_e >= xmarge ){\
  5691.    ctx.beginPath();\n\
  5692.    ctx.moveTo(x_e,0);\n\
  5693.    ctx.lineTo(x_e,ysize - ymarge);\n\n\
  5694.    ctx.stroke();\n\
  5695.    ctx.closePath();\n\
  5696.   };\
  5697.  };\n\
  5698. };\n\
  5699. for(var p = y_min; p <= y_max ; p++){\n\
  5700.  num = Math.pow(ylogbase,p);\n\
  5701.  for(var i = 1 ; i < ylogbase ; i++){\n\
  5702.   y_e = y2px(i*num);\n\
  5703.   if( i == 1 ){\n\
  5704.    ctx.lineWidth = line_width;\n\
  5705.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5706.    if( use_axis_numbering == 1 && p > y_min){\n\
  5707.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\n\
  5708.    };\n\
  5709.   }else{\n\
  5710.    ctx.lineWidth = 0.2*line_width;\n\
  5711.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\n\
  5712.   };\n\
  5713.   ctx.beginPath();\n\
  5714.   ctx.moveTo(xmarge,y_e);\n\
  5715.   ctx.lineTo(xsize,y_e);\n\
  5716.   ctx.stroke();\n\
  5717.   ctx.closePath();\n\
  5718.  };\n\
  5719. };\n\
  5720. ctx.restore();\
  5721. };",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5722.     break;
  5723.  
  5724. case DRAW_XLOGSCALE:
  5725. fprintf(js_include_file,"\n<!-- draw xlogscale -->\n\
  5726. 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\
  5727. var obj;\n\
  5728. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5729.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5730. }\n\
  5731. else\n\
  5732. {\n\
  5733.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5734. };\n\
  5735. var ctx = obj.getContext(\"2d\");\n\
  5736. ctx.clearRect(0,0,xsize,ysize);\
  5737. ctx.save();\n\
  5738. ctx.lineWidth = line_width;\n\
  5739. var prec = Math.log(precision)/Math.log(10);\
  5740. var x_min = Math.log(xmin)/Math.log(xlogbase);\
  5741. var x_max = Math.log(xmax)/Math.log(xlogbase);\
  5742. var y_min = 0;var y_max = ysize;var x_e;var corr;\
  5743. var xtxt;var ytxt;var num;var xmarge;var ymarge;\
  5744. if(use_axis_numbering == 1){\
  5745.  ctx.font = font_family;\n\
  5746.  xmarge = ctx.measureText(ymax.toFixed(prec)+' ').width;\n\
  5747.  ymarge = parseInt(1.5*font_size);\n\
  5748.  ctx.save();\n\
  5749.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5750.  ctx.rect(0,0,xmarge,ysize);\n\
  5751.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5752.  ctx.fill();\n\
  5753.  ctx.restore();\n\
  5754. }else{xmarge = 0;ymarge = 0;};\n\
  5755. if( typeof xaxislabel !== 'undefined' ){\
  5756.  ctx.save();\n\
  5757.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5758.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5759.  corr =  ctx.measureText(xaxislabel).width;\n\
  5760.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5761.  ctx.restore();\n\
  5762. };\n\
  5763. if( typeof yaxislabel !== 'undefined' ){\
  5764.  ctx.save();\n\
  5765.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5766.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5767.  corr = ctx.measureText(yaxislabel).width;\n\
  5768.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5769.  ctx.rotate(-0.5*Math.PI);\n\
  5770.  ctx.fillText(yaxislabel,0,0);\n\
  5771.  ctx.restore();\n\
  5772. };\n\
  5773. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5774. ctx.lineWidth = line_width;\n\n\
  5775. for(var p = x_min; p <= x_max ; p++){\n\
  5776.  num = Math.pow(xlogbase,p);\n\
  5777.  for(var i = 1 ; i < xlogbase ; i++){\n\
  5778.   x_e = x2px(i*num);\n\
  5779.   if( i == 1 ){\
  5780.     ctx.lineWidth = line_width;\n\
  5781.     ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5782.    if( use_axis_numbering == 1 && p > x_min ){\
  5783.      xtxt = xlogbase+'^'+p.toFixed(0);\
  5784.      corr = 0.5*(ctx.measureText(xtxt).width);\
  5785.      ctx.fillText(xtxt,x_e - corr,ysize - 4);\
  5786.    };\
  5787.   }else{\
  5788.    ctx.lineWidth = 0.2*line_width;\n\
  5789.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5790.   };\
  5791.   if( x_e >= xmarge ){\
  5792.    ctx.beginPath();\n\
  5793.    ctx.moveTo(x_e,0);\n\
  5794.    ctx.lineTo(x_e,ysize - ymarge);\n\n\
  5795.    ctx.stroke();\n\
  5796.    ctx.closePath();\n\
  5797.   };\
  5798.  };\
  5799. };\n\
  5800. var stepy = Math.abs(y2px(ymajor) - y2px(0));\
  5801. var minor_step = stepy / yminor;\
  5802. for(var y = 0 ; y < ysize - stepy ; y = y + stepy){\
  5803.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5804.  ctx.lineWidth = line_width;\n\
  5805.  ctx.beginPath();\n\
  5806.  ctx.moveTo(xmarge,y);\n\
  5807.  ctx.lineTo(xsize,y);\n\
  5808.  ctx.stroke();\n\
  5809.  ctx.closePath();\n\
  5810.  if( use_axis_numbering == 1){\
  5811.   ytxt = (px2y(y)).toFixed(prec);\
  5812.   ctx.fillText( ytxt,0 ,y + 0.5*font_size );\
  5813.  };\
  5814.  for(var dy = 1 ; dy < yminor ; dy++){\
  5815.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5816.   ctx.lineWidth = 0.2*line_width;\n\
  5817.   ctx.beginPath();\n\
  5818.   ctx.moveTo(xmarge,y+dy*minor_step);\
  5819.   ctx.lineTo(xsize,y+dy*minor_step);\n\
  5820.   ctx.stroke();\n\
  5821.   ctx.closePath();\n\
  5822.  };\
  5823. };\
  5824. ctx.restore();\n\
  5825. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5826.     break;
  5827. case DRAW_YLOGSCALE:
  5828. fprintf(js_include_file,"\n<!-- draw ylogscale -->\n\
  5829. 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\
  5830. var obj;\n\
  5831. if( document.getElementById(\"wims_canvas%d\"+canvas_type) ){\n\
  5832.  obj = document.getElementById(\"wims_canvas%d\"+canvas_type);\n\
  5833. }\n\
  5834. else\n\
  5835. {\n\
  5836.  obj = create_canvas%d(canvas_type,xsize,ysize);\n\
  5837. };\n\
  5838. var ctx = obj.getContext(\"2d\");\n\
  5839. ctx.clearRect(0,0,xsize,ysize);\
  5840. ctx.save();\n\
  5841. ctx.lineWidth = line_width;\n\
  5842. var y_min = Math.log(ymin)/Math.log(ylogbase);\
  5843. var y_max = Math.log(ymax)/Math.log(ylogbase);\
  5844. var x_min = 0;var x_max = xsize;var y_s;var y_e;var num;\
  5845. if(use_axis_numbering == 1){\
  5846.  ctx.font = font_family;\n\
  5847.  xmarge = ctx.measureText(ylogbase+\"^\"+y_max.toFixed(0)+' ').width;\n\
  5848.  ymarge = 2*font_size;\n\
  5849.  ctx.save();\n\
  5850.  ctx.fillStyle=\"rgba(255,215,0,0.2)\";\n\
  5851.  ctx.rect(0,0,xmarge,ysize);\n\
  5852.  ctx.rect(0,ysize-ymarge,xsize,ysize);\n\
  5853.  ctx.fill();\n\
  5854.  ctx.restore();\n\
  5855. }else{xmarge = 0;ymarge = 0;};\n\
  5856. if( typeof xaxislabel !== 'undefined' ){\
  5857.  ctx.save();\n\
  5858.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5859.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5860.  corr =  ctx.measureText(xaxislabel).width;\n\
  5861.  ctx.fillText(xaxislabel,xsize - 1.5*corr,ysize - 2*font_size);\n\
  5862.  ctx.restore();\n\
  5863. };\n\
  5864. if( typeof yaxislabel !== 'undefined' ){\
  5865.  ctx.save();\n\
  5866.  ctx.font = \"italic \"+font_size+\"px Ariel\";\n\
  5867.  ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5868.  corr = ctx.measureText(yaxislabel).width;\n\
  5869.  ctx.translate(xmarge+font_size,corr+font_size);\n\
  5870.  ctx.rotate(-0.5*Math.PI);\n\
  5871.  ctx.fillText(yaxislabel,0,0);\n\
  5872.  ctx.restore();\n\
  5873. };\n\
  5874. ctx.fillStyle = \"rgba(\"+font_color+\",\"+major_opacity+\")\";\n\
  5875. ctx.lineWidth = line_width;\n\n\
  5876. for(var p = y_min; p <= y_max ; p++){\n\
  5877.  num = Math.pow(ylogbase,p);\n\
  5878.  for(var i = 1 ; i < ylogbase ; i++){\n\
  5879.   y_e = y2px(i*num);\n\
  5880.   if( i == 1 ){\
  5881.    ctx.lineWidth = line_width;\n\
  5882.    ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5883.    if( use_axis_numbering == 1 && p > y_min){\
  5884.     ctx.fillText(ylogbase+'^'+p.toFixed(0),0,y_e);\
  5885.    };\
  5886.   }else{\
  5887.    ctx.lineWidth = 0.2*line_width;\n\
  5888.    ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5889.   };\
  5890.   ctx.beginPath();\n\
  5891.   ctx.moveTo(xmarge,y_e);\n\
  5892.   ctx.lineTo(xsize,y_e);\n\
  5893.   ctx.stroke();\n\
  5894.   ctx.closePath();\n\
  5895.  };\n\
  5896. };\n\
  5897. var stepx = Math.abs(x2px(xmajor) - x2px(0));\
  5898. var minor_step = stepx / xminor;\
  5899. var prec = Math.log(precision)/Math.log(10);\
  5900. var xtxt;var corr;var flip = 0;\
  5901. for(var x = stepx ; x < xsize ; x = x + stepx){\
  5902.  ctx.strokeStyle=\"rgba(\"+major_color+\",\"+major_opacity+\")\";\
  5903.  ctx.lineWidth = line_width;\n\
  5904.  ctx.beginPath();\n\
  5905.  ctx.moveTo(x,ysize-ymarge);\n\
  5906.  ctx.lineTo(x,0);\n\
  5907.  ctx.stroke();\n\
  5908.  ctx.closePath();\n\
  5909.  if( use_axis_numbering == 1){\
  5910.   xtxt = (px2x(x)).toFixed(prec);\
  5911.   corr = 0.5*(ctx.measureText(xtxt).width);\
  5912.   if(flip == 0 ){flip = 1;ctx.fillText( xtxt,x - corr ,ysize - 0.2*font_size );}else{\
  5913.   flip = 0;ctx.fillText( xtxt,x - corr ,ysize - 1.2*font_size );};\
  5914.  };\
  5915.  for(var dx = 1 ; dx < xminor ; dx++){\
  5916.   ctx.strokeStyle=\"rgba(\"+minor_color+\",\"+minor_opacity+\")\";\
  5917.   ctx.lineWidth = 0.2*line_width;\n\
  5918.   ctx.beginPath();\n\
  5919.   ctx.moveTo(x+dx*minor_step,ysize - ymarge);\
  5920.   ctx.lineTo(x+dx*minor_step,0);\n\
  5921.   ctx.stroke();\n\
  5922.   ctx.closePath();\n\
  5923.  };\
  5924. };\
  5925. ctx.restore();\n\
  5926. };\n",canvas_root_id,canvas_root_id,canvas_root_id,canvas_root_id);
  5927.  
  5928.     break;
  5929.  
  5930.  
  5931.     default:break;
  5932.    }
  5933.   }
  5934.  }
  5935.   return;
  5936. }
  5937.  
  5938. void check_string_length(int L){
  5939.  if(L<1 || L > MAX_BUFFER-1){
  5940.   canvas_error("problem with your arguments to command...");
  5941.  }
  5942.  return;
  5943. }
  5944.  
  5945.  
  5946. int get_token(FILE *infile){
  5947.         int     c,i=0;
  5948.         char    temp[MAX_INT], *input_type;
  5949.         char    *line="line",
  5950.         *audio="audio",
  5951.         *blink="blink",
  5952.         *arrowhead="arrowhead",
  5953.         *crosshairsize="crosshairsize",
  5954.         *crosshair="crosshair",
  5955.         *crosshairs="crosshairs",
  5956.         *audioobject="audioobject",
  5957.         *style="style",
  5958.         *mouse="mouse",
  5959.         *userdraw="userdraw",
  5960.         *highlight="highlight",
  5961.         *http="http",
  5962.         *rays="rays",
  5963.         *dashtype="dashtype",
  5964.         *dashed="dashed",
  5965.         *filled="filled",
  5966.         *lattice="lattice",
  5967.         *parallel="parallel",
  5968.         *segment="segment",
  5969.         *dsegment="dsegment",
  5970.         *seg="seg",
  5971.         *bgimage="bgimage",
  5972.         *bgcolor="bgcolor",
  5973.         *strokecolor="strokecolor",
  5974.         *backgroundimage="backgroundimage",
  5975.         *text="text",
  5976.         *textup="textup",
  5977.         *mouseprecision="mouseprecision",
  5978.         *precision="precision",
  5979.         *plotsteps="plotsteps",
  5980.         *plotstep="plotstep",
  5981.         *tsteps="tsteps",
  5982.         *curve="curve",
  5983.         *dcurve="dcurve",
  5984.         *plot="plot",
  5985.         *dplot="dplot",
  5986.         *levelcurve="levelcurve",
  5987.         *fontsize="fontsize",
  5988.         *fontcolor="fontcolor",
  5989.         *axis="axis",
  5990.         *axisnumbering="axisnumbering",
  5991.         *axisnumbers="axisnumbers",
  5992.         *arrow="arrow",
  5993.         *darrow="darrow",
  5994.         *arrow2="arrow2",
  5995.         *darrow2="darrow2",
  5996.         *zoom="zoom",
  5997.         *grid="grid",
  5998.         *hline="hline",
  5999.         *dhline="dhline",
  6000.         *drag="drag",
  6001.         *horizontalline="horizontalline",
  6002.         *vline="vline",
  6003.         *dvline="dvline",
  6004.         *verticalline="verticalline",
  6005.         *triangle="triangle",
  6006.         *ftriangle="ftriangle",
  6007.         *mathml="mathml",
  6008.         *html="html",
  6009.         *input="input",
  6010.         *button="button",
  6011.         *inputstyle="inputstyle",
  6012.         *textarea="textarea",
  6013.         *trange="trange",
  6014.         *ranget="ranget",
  6015.         *xrange="xrange",
  6016.         *yrange="yrange",
  6017.         *rangex="rangex",
  6018.         *rangey="rangey",
  6019.         *polyline="polyline",
  6020.         *lines="lines",
  6021.         *poly="poly",
  6022.         *polygon="polygon",
  6023.         *fpolygon="fpolygon",
  6024.         *fpoly="fpoly",
  6025.         *filledpoly="filledpoly",
  6026.         *filledpolygon="filledpolygon",
  6027.         *rect="rect",
  6028.         *frect="frect",
  6029.         *rectangle="rectangle",
  6030.         *frectangle="frectangle",
  6031.         *square="square",
  6032.         *fsquare="fsquare",
  6033.         *dline="dline",
  6034.         *arc="arc",
  6035.         *filledarc="filledarc",
  6036.         *size="size",
  6037.         *string="string",
  6038.         *stringup="stringup",
  6039.         *copy="copy",
  6040.         *copyresized="copyresized",
  6041.         *opacity="opacity",
  6042.         *transparent="transparent",
  6043.         *fill="fill",
  6044.         *slider="slider",
  6045.         *point="point",
  6046.         *points="points",
  6047.         *linewidth="linewidth",
  6048.         *circle="circle",
  6049.         *fcircle="fcircle",
  6050.         *disk="disk",
  6051.         *comment="#",
  6052.         *end="end",
  6053.         *ellipse="ellipse",
  6054.         *fellipse="fellipse",
  6055.         *rotate="rotate",
  6056.         *affine="affine",
  6057.         *killaffine="killaffine",
  6058.         *fontfamily="fontfamily",
  6059.         *fillcolor="fillcolor",
  6060.         *clicktile="clicktile",
  6061.         *clicktile_colors="clicktile_colors",
  6062.         *translation="translation",
  6063.         *translate="translate",
  6064.         *killtranslation="killtranslation",
  6065.         *killtranslate="killtranslate",
  6066.         *onclick="onclick",
  6067.         *roundrect="roundrect",
  6068.         *froundrect="froundrect",
  6069.         *roundrectangle="roundrectangle",
  6070.         *patternfill="patternfill",
  6071.         *hatchfill="hatchfill",
  6072.         *diafill="diafill",
  6073.         *diamondfill="diamondfill",
  6074.         *dotfill="dotfill",
  6075.         *gridfill="gridfill",
  6076.         *imagefill="imagefill",
  6077.         *xlogbase="xlogbase",
  6078.         *ylogbase="ylogbase",
  6079.         *xlogscale="xlogscale",
  6080.         *ylogscale="ylogscale",
  6081.         *xylogscale="xylogscale",
  6082.         *intooltip="intooltip",
  6083.         *replyformat="replyformat",
  6084.         *floodfill="floodfill",
  6085.         *filltoborder="filltoborder",
  6086.         *clickfill="clickfill",
  6087.         *setpixel="setpixel",
  6088.         *pixels="pixels",
  6089.         *pixelsize="pixelsize",
  6090.         *clickfillmarge="clickfillmarge",
  6091.         *xaxis="xaxis",
  6092.         *yaxis="yaxis",
  6093.         *xaxistext="xaxistext",
  6094.         *yaxistext="yaxistext",
  6095.         *piechart="piechart",
  6096.         *legend="legend",
  6097.         *legendcolors="legendcolors",
  6098.         *xlabel="xlabel",
  6099.         *ylabel="ylabel",
  6100.         *barchart="barchart",
  6101.         *linegraph="linegraph",
  6102.         *clock="clock",
  6103.         *animate="animate",
  6104.         *video="video",
  6105.         *status="status",
  6106.         *snaptogrid="snaptogrid",
  6107.         *xsnaptogrid="xsnaptogrid",
  6108.         *ysnaptogrid="ysnaptogrid",
  6109.         *userinput_xy="userinput_xy",
  6110.         *usertextarea_xy="usertextarea_xy",
  6111.         *jsmath="jsmath",
  6112.         *trace_jsmath="trace_jsmath",
  6113.         *setlimits="setlimits",
  6114.         *sgraph="sgraph";
  6115.  
  6116.         while(((c = getc(infile)) != EOF)&&(c!='\n')&&(c!=',')&&(c!='=')&&(c!='\r')){
  6117.             if( i == 0 && (c == ' ' || c == '\t') ){
  6118.         continue; /* white spaces or tabs allowed before first command identifier */
  6119.             }
  6120.             else
  6121.             {
  6122.         if( c == ' ' || c == '\t' ){
  6123.             break;
  6124.         }
  6125.         else
  6126.         {
  6127.             temp[i] = c;
  6128.             if(i > MAX_INT - 2){canvas_error("command string too long !");}
  6129.             i++;
  6130.         }
  6131.             }
  6132.             if(temp[0] == '#') break;
  6133.         }
  6134.         if (c == EOF) finished = 1;
  6135.  
  6136.         if (c == '\n' || c == '\r') {
  6137.         line_number++;
  6138.         if (i == 0) { return EMPTY; }
  6139.         } else if (c == EOF) {
  6140.         return 0;
  6141.         }
  6142.  
  6143.         temp[i]='\0';
  6144.         input_type=(char*)my_newmem(strlen(temp));
  6145.         snprintf(input_type,sizeof(temp),"%s",temp);
  6146.  
  6147.         if( strcmp(input_type, size) == 0 ){
  6148.         free(input_type);
  6149.         return SIZE;
  6150.         }
  6151.         if( strcmp(input_type, xrange) == 0 ){
  6152.         free(input_type);
  6153.         return XRANGE;
  6154.         }
  6155.         if( strcmp(input_type, rangex) == 0 ){
  6156.         free(input_type);
  6157.         return XRANGE;
  6158.         }
  6159.         if( strcmp(input_type, trange) == 0 ){
  6160.         free(input_type);
  6161.         return TRANGE;
  6162.         }
  6163.         if( strcmp(input_type, ranget) == 0 ){
  6164.         free(input_type);
  6165.         return TRANGE;
  6166.         }
  6167.         if( strcmp(input_type, yrange) == 0 ){
  6168.         free(input_type);
  6169.         return YRANGE;
  6170.         }
  6171.         if( strcmp(input_type, rangey) == 0 ){
  6172.         free(input_type);
  6173.         return YRANGE;
  6174.         }
  6175.         if( strcmp(input_type, linewidth) == 0 ){
  6176.         free(input_type);
  6177.         return LINEWIDTH;
  6178.         }
  6179.         if( strcmp(input_type, dashed) == 0 ){
  6180.         free(input_type);
  6181.         return DASHED;
  6182.         }
  6183.         if( strcmp(input_type, dashtype) == 0 ){
  6184.         free(input_type);
  6185.         return DASHTYPE;
  6186.         }
  6187.         if( strcmp(input_type, axisnumbering) == 0 ){
  6188.         free(input_type);
  6189.         return AXIS_NUMBERING;
  6190.         }
  6191.         if( strcmp(input_type, axisnumbers) == 0 ){
  6192.         free(input_type);
  6193.         return AXIS_NUMBERING;
  6194.         }
  6195.         if( strcmp(input_type, axis) == 0 ){
  6196.         free(input_type);
  6197.         return AXIS;
  6198.         }
  6199.         if( strcmp(input_type, grid) == 0 ){
  6200.         free(input_type);
  6201.         return GRID;
  6202.         }
  6203.         if( strcmp(input_type, parallel) == 0 ){
  6204.         free(input_type);
  6205.         return PARALLEL;
  6206.         }
  6207.         if( strcmp(input_type, hline) == 0 ||  strcmp(input_type, horizontalline) == 0 ){
  6208.         free(input_type);
  6209.         return HLINE;
  6210.         }
  6211.         if( strcmp(input_type, vline) == 0 ||  strcmp(input_type, verticalline) == 0 ){
  6212.         free(input_type);
  6213.         return VLINE;
  6214.         }
  6215.         if( strcmp(input_type, line) == 0 ){
  6216.         free(input_type);
  6217.         return LINE;
  6218.         }
  6219.         if( strcmp(input_type, seg) == 0 ||  strcmp(input_type, segment) == 0 ){
  6220.         free(input_type);
  6221.         return SEGMENT;
  6222.         }
  6223.         if( strcmp(input_type, dsegment) == 0 ){
  6224.         free(input_type);
  6225.         use_dashed = TRUE;
  6226.         return SEGMENT;
  6227.         }
  6228.         if( strcmp(input_type, crosshairsize) == 0 ){
  6229.         free(input_type);
  6230.         return CROSSHAIRSIZE;
  6231.         }
  6232.         if( strcmp(input_type, arrowhead) == 0 ){
  6233.         free(input_type);
  6234.         return ARROWHEAD;
  6235.         }
  6236.         if( strcmp(input_type, crosshairs) == 0 ){
  6237.         free(input_type);
  6238.         return CROSSHAIRS;
  6239.         }
  6240.         if( strcmp(input_type, crosshair) == 0 ){
  6241.         free(input_type);
  6242.         return CROSSHAIR;
  6243.         }
  6244.         if( strcmp(input_type, onclick) == 0 ){
  6245.         free(input_type);
  6246.         return ONCLICK;
  6247.         }
  6248.         if( strcmp(input_type, drag) == 0 ){
  6249.         free(input_type);
  6250.         return DRAG;
  6251.         }
  6252.         if( strcmp(input_type, userdraw) == 0 ){
  6253.         free(input_type);
  6254.         return USERDRAW;
  6255.         }
  6256.         if( strcmp(input_type, highlight) == 0 || strcmp(input_type, style) == 0 ){
  6257.         free(input_type);
  6258.         return STYLE;
  6259.         }
  6260.         if( strcmp(input_type, fillcolor) == 0 ){
  6261.         free(input_type);
  6262.         return FILLCOLOR;
  6263.         }
  6264.         if( strcmp(input_type, strokecolor) == 0 ){
  6265.         free(input_type);
  6266.         return STROKECOLOR;
  6267.         }
  6268.         if( strcmp(input_type, filled) == 0  ){
  6269.         free(input_type);
  6270.         return FILLED;
  6271.         }
  6272.         if( strcmp(input_type, http) == 0 ){
  6273.         free(input_type);
  6274.         return HTTP;
  6275.         }
  6276.         if( strcmp(input_type, rays) == 0 ){
  6277.         free(input_type);
  6278.         return RAYS;
  6279.         }
  6280.         if( strcmp(input_type, lattice) == 0 ){
  6281.         free(input_type);
  6282.         return LATTICE;
  6283.         }
  6284.         if( strcmp(input_type, bgimage) == 0 ){
  6285.         free(input_type);
  6286.         return BGIMAGE;
  6287.         }
  6288.         if( strcmp(input_type, bgcolor) == 0 ){
  6289.         free(input_type);
  6290.         return BGCOLOR;
  6291.         }
  6292.         if( strcmp(input_type, backgroundimage) == 0 ){
  6293.         free(input_type);
  6294.         return BGIMAGE;
  6295.         }
  6296.         if( strcmp(input_type, text) == 0 ){
  6297.         free(input_type);
  6298.         return FLY_TEXT;
  6299.         }
  6300.         if( strcmp(input_type, textup) == 0 ){
  6301.         free(input_type);
  6302.         return FLY_TEXTUP;
  6303.         }
  6304.         if( strcmp(input_type, mouse) == 0 ){
  6305.         free(input_type);
  6306.         return MOUSE;
  6307.         }
  6308.         if( strcmp(input_type, mouseprecision) == 0 ){
  6309.         free(input_type);
  6310.         return MOUSE_PRECISION;
  6311.         }
  6312.         if( strcmp(input_type, precision) == 0 ){
  6313.         free(input_type);
  6314.         return MOUSE_PRECISION;
  6315.         }
  6316.         if( strcmp(input_type, curve) == 0 ){
  6317.         free(input_type);
  6318.         return CURVE;
  6319.         }
  6320.         if( strcmp(input_type, dcurve) == 0 ){
  6321.         use_dashed = TRUE;
  6322.         free(input_type);
  6323.         return CURVE;
  6324.         }
  6325.         if( strcmp(input_type, plot) == 0 ){
  6326.         free(input_type);
  6327.         return CURVE;
  6328.         }
  6329.         if( strcmp(input_type, dplot) == 0 ){
  6330.         use_dashed = TRUE;
  6331.         free(input_type);
  6332.         return CURVE;
  6333.         }
  6334.         if( strcmp(input_type, levelcurve) == 0 ){
  6335.         free(input_type);
  6336.         return LEVELCURVE;
  6337.         }
  6338.         if( strcmp(input_type, plotsteps) == 0 ){
  6339.         free(input_type);
  6340.         return PLOTSTEPS;
  6341.         }
  6342.         if( strcmp(input_type, plotstep) == 0 ){
  6343.         free(input_type);
  6344.         return PLOTSTEPS;
  6345.         }
  6346.         if( strcmp(input_type, tsteps) == 0 ){
  6347.         free(input_type);
  6348.         return PLOTSTEPS;
  6349.         }
  6350.         if( strcmp(input_type, fontsize) == 0 ){
  6351.         free(input_type);
  6352.         return FONTSIZE;
  6353.         }
  6354.         if( strcmp(input_type, fontcolor) == 0 ){
  6355.         free(input_type);
  6356.         return FONTCOLOR;
  6357.         }
  6358.         if( strcmp(input_type, arrow) == 0 ){
  6359.         free(input_type);
  6360.         return ARROW;
  6361.         }
  6362.         if( strcmp(input_type, arrow2) == 0 ){
  6363.         free(input_type);
  6364.         return ARROW2;
  6365.         }
  6366.         if( strcmp(input_type, darrow) == 0 ){
  6367.         free(input_type);
  6368.         return ARROW;
  6369.         }
  6370.         if( strcmp(input_type, darrow2) == 0 ){
  6371.         free(input_type);
  6372.         use_dashed = TRUE;
  6373.         return ARROW2;
  6374.         }
  6375.         if( strcmp(input_type, zoom) == 0 ){
  6376.         free(input_type);
  6377.         return ZOOM;
  6378.         }
  6379.         if( strcmp(input_type, triangle) == 0 ){
  6380.         free(input_type);
  6381.         return TRIANGLE;
  6382.         }
  6383.         if( strcmp(input_type, ftriangle) == 0 ){
  6384.         free(input_type);
  6385.         use_filled = TRUE;
  6386.         return TRIANGLE;
  6387.         }
  6388.         if( strcmp(input_type, input) == 0 ){
  6389.         free(input_type);
  6390.         return INPUT;
  6391.         }
  6392.         if( strcmp(input_type, inputstyle) == 0 ){
  6393.         free(input_type);
  6394.         return INPUTSTYLE;
  6395.         }
  6396.         if( strcmp(input_type, textarea) == 0 ){
  6397.         free(input_type);
  6398.         return TEXTAREA;
  6399.         }
  6400.         if( strcmp(input_type, mathml) == 0 ){
  6401.         free(input_type);
  6402.         return MATHML;
  6403.         }
  6404.         if( strcmp(input_type, html) == 0 ){
  6405.         free(input_type);
  6406.         return MATHML;
  6407.         }
  6408.         if( strcmp(input_type, fontfamily) == 0 ){
  6409.         free(input_type);
  6410.         return FONTFAMILY;
  6411.         }
  6412.         if( strcmp(input_type, lines) == 0  ||  strcmp(input_type, polyline) == 0 ){
  6413.         free(input_type);
  6414.         return POLYLINE;
  6415.         }
  6416.         if( strcmp(input_type, rect) == 0  ||  strcmp(input_type, rectangle) == 0 ){
  6417.         free(input_type);
  6418.         return RECT;
  6419.         }
  6420.         if( strcmp(input_type, roundrect) == 0  ||  strcmp(input_type, roundrectangle) == 0 ){
  6421.         free(input_type);
  6422.         return ROUNDRECT;
  6423.         }
  6424.         if( strcmp(input_type, froundrect) == 0 ){
  6425.         free(input_type);
  6426.         use_filled = TRUE;
  6427.         return ROUNDRECT;
  6428.         }
  6429.         if( strcmp(input_type, square) == 0 ){
  6430.         free(input_type);
  6431.         return SQUARE;
  6432.         }
  6433.         if( strcmp(input_type, fsquare) == 0 ){
  6434.         free(input_type);
  6435.         use_filled = TRUE;
  6436.         return SQUARE;
  6437.         }
  6438.         if( strcmp(input_type, dline) == 0 ){
  6439.         use_dashed = TRUE;
  6440.         free(input_type);
  6441.         return LINE;
  6442.         }
  6443.         if( strcmp(input_type, dvline) == 0 ){
  6444.         use_dashed = TRUE;
  6445.         free(input_type);
  6446.         return VLINE;
  6447.         }
  6448.         if( strcmp(input_type, dhline) == 0 ){
  6449.         use_dashed = TRUE;
  6450.         free(input_type);
  6451.         return HLINE;
  6452.         }
  6453.         if( strcmp(input_type, frect) == 0 || strcmp(input_type, frectangle) == 0 ){
  6454.         use_filled = TRUE;
  6455.         free(input_type);
  6456.         return RECT;
  6457.         }
  6458.         if( strcmp(input_type, fcircle) == 0  ||  strcmp(input_type, disk) == 0 ){
  6459.         use_filled = TRUE;
  6460.         free(input_type);
  6461.         return CIRCLE;
  6462.         }
  6463.         if( strcmp(input_type, circle) == 0 ){
  6464.         free(input_type);
  6465.         return CIRCLE;
  6466.         }
  6467.         if( strcmp(input_type, point) == 0 ){
  6468.         free(input_type);
  6469.         return POINT;
  6470.         }
  6471.         if( strcmp(input_type, points) == 0 ){
  6472.         free(input_type);
  6473.         return POINTS;
  6474.         }
  6475.         if( strcmp(input_type, filledarc) == 0 ){
  6476.         use_filled = TRUE;
  6477.         free(input_type);
  6478.         return ARC;
  6479.         }
  6480.         if( strcmp(input_type, arc) == 0 ){
  6481.         free(input_type);
  6482.         return ARC;
  6483.         }
  6484.         if( strcmp(input_type, poly) == 0 ||  strcmp(input_type, polygon) == 0 ){
  6485.         free(input_type);
  6486.         return POLY;
  6487.         }
  6488.         if( strcmp(input_type, fpoly) == 0 ||  strcmp(input_type, filledpoly) == 0 || strcmp(input_type,filledpolygon) == 0  || strcmp(input_type,fpolygon) == 0  ){
  6489.         use_filled = TRUE;
  6490.         free(input_type);
  6491.         return POLY;
  6492.         }
  6493.         if( strcmp(input_type, ellipse) == 0){
  6494.         free(input_type);
  6495.         return ELLIPSE;
  6496.         }
  6497.         if( strcmp(input_type, fill) == 0 ){
  6498.         free(input_type);
  6499.         return FLOODFILL;
  6500.         }
  6501.         if( strcmp(input_type, string) == 0 ){
  6502.         free(input_type);
  6503.         return STRING;
  6504.         }
  6505.         if( strcmp(input_type, stringup) == 0 ){
  6506.         free(input_type);
  6507.         return STRINGUP;
  6508.         }
  6509.         if( strcmp(input_type, opacity) == 0 ){
  6510.         free(input_type);
  6511.         return OPACITY;
  6512.         }
  6513.         if( strcmp(input_type, comment) == 0){
  6514.         free(input_type);
  6515.         return COMMENT;
  6516.         }
  6517.         if( strcmp(input_type, end) == 0){
  6518.         free(input_type);
  6519.         return END;
  6520.         }
  6521.         if( strcmp(input_type, fellipse) == 0){
  6522.         free(input_type);
  6523.         use_filled = TRUE;
  6524.         return ELLIPSE;
  6525.         }
  6526.         if( strcmp(input_type, blink) == 0 ){
  6527.         free(input_type);
  6528.         return BLINK;
  6529.         }
  6530.         if( strcmp(input_type, button) == 0){
  6531.         free(input_type);
  6532.         return BUTTON;
  6533.         }
  6534.         if( strcmp(input_type, translation) == 0 ||  strcmp(input_type, translate) == 0  ){
  6535.         free(input_type);
  6536.         return TRANSLATION;
  6537.         }
  6538.         if( strcmp(input_type, killtranslation) == 0 ||  strcmp(input_type, killtranslate) == 0){
  6539.         free(input_type);
  6540.         return KILLTRANSLATION;
  6541.         }
  6542.         if( strcmp(input_type, rotate) == 0){
  6543.         free(input_type);
  6544.         return ROTATE;
  6545.         }
  6546.         if( strcmp(input_type, affine) == 0){
  6547.         free(input_type);
  6548.         return AFFINE;
  6549.         }
  6550.         if( strcmp(input_type, killaffine) == 0){
  6551.         free(input_type);
  6552.         return KILLAFFINE;
  6553.         }
  6554.         if( strcmp(input_type, audio) == 0 ){
  6555.         free(input_type);
  6556.         return AUDIO;
  6557.         }
  6558.         if( strcmp(input_type, audioobject) == 0 ){
  6559.         free(input_type);
  6560.         return AUDIOOBJECT;
  6561.         }
  6562.         if( strcmp(input_type, slider) == 0 ){
  6563.         free(input_type);
  6564.         return SLIDER;
  6565.         }
  6566.         if( strcmp(input_type, copy) == 0 ){
  6567.         free(input_type);
  6568.         return COPY;
  6569.         }
  6570.         if( strcmp(input_type, copyresized) == 0 ){
  6571.         free(input_type);
  6572.         return COPYRESIZED;
  6573.         }
  6574.         if( strcmp(input_type, patternfill) == 0 ){
  6575.         free(input_type);
  6576.         return PATTERNFILL;
  6577.         }
  6578.         if( strcmp(input_type, hatchfill) == 0 ){
  6579.         free(input_type);
  6580.         return HATCHFILL;
  6581.         }
  6582.         if( strcmp(input_type, diafill) == 0  || strcmp(input_type, diamondfill) == 0  ){
  6583.         free(input_type);
  6584.         return DIAMONDFILL;
  6585.         }
  6586.         if( strcmp(input_type, dotfill) == 0 ){
  6587.         free(input_type);
  6588.         return DOTFILL;
  6589.         }
  6590.         if( strcmp(input_type, gridfill) == 0 ){
  6591.         free(input_type);
  6592.         return GRIDFILL;
  6593.         }
  6594.         if( strcmp(input_type, imagefill) == 0 ){
  6595.         free(input_type);
  6596.         return IMAGEFILL;
  6597.         }
  6598.         if( strcmp(input_type, clicktile_colors) == 0 ){
  6599.         free(input_type);
  6600.         return CLICKTILE_COLORS;
  6601.         }
  6602.         if( strcmp(input_type, clicktile) == 0 ){
  6603.         free(input_type);
  6604.         return CLICKTILE;
  6605.         }
  6606.         if( strcmp(input_type, xlogscale) == 0 ){
  6607.         free(input_type);
  6608.         return XLOGSCALE;
  6609.         }
  6610.         if( strcmp(input_type, ylogscale) == 0 ){
  6611.         free(input_type);
  6612.         return YLOGSCALE;
  6613.         }
  6614.         if( strcmp(input_type, xylogscale) == 0 ){
  6615.         free(input_type);
  6616.         return XYLOGSCALE;
  6617.         }
  6618.         if( strcmp(input_type, ylogscale) == 0 ){
  6619.         free(input_type);
  6620.         return YLOGSCALE;
  6621.         }
  6622.         if( strcmp(input_type, xlogbase) == 0 ){
  6623.         free(input_type);
  6624.         return XLOGBASE;
  6625.         }
  6626.         if( strcmp(input_type, ylogbase) == 0 ){
  6627.         free(input_type);
  6628.         return YLOGBASE;
  6629.         }
  6630.         if( strcmp(input_type, intooltip) == 0 ){
  6631.         free(input_type);
  6632.         return INTOOLTIP;
  6633.         }
  6634.         if( strcmp(input_type,video) == 0 ){
  6635.         free(input_type);
  6636.         return VIDEO;
  6637.         }
  6638.         if( strcmp(input_type,floodfill) == 0 || strcmp(input_type,fill) == 0 ){
  6639.         free(input_type);
  6640.         return FLOODFILL;
  6641.         }
  6642.         if( strcmp(input_type,filltoborder) == 0 ){
  6643.         free(input_type);
  6644.         return FILLTOBORDER;
  6645.         }
  6646.         if( strcmp(input_type,clickfill) == 0 ){
  6647.         free(input_type);
  6648.         return CLICKFILL;
  6649.         }
  6650.         if( strcmp(input_type, replyformat) == 0 ){
  6651.         free(input_type);
  6652.         return REPLYFORMAT;
  6653.         }
  6654.         if( strcmp(input_type, pixelsize) == 0 ){
  6655.         free(input_type);
  6656.         return PIXELSIZE;
  6657.         }
  6658.         if( strcmp(input_type, setpixel) == 0 ){
  6659.         free(input_type);
  6660.         return SETPIXEL;
  6661.         }
  6662.         if( strcmp(input_type, pixels) == 0 ){
  6663.         free(input_type);
  6664.         return PIXELS;
  6665.         }
  6666.         if( strcmp(input_type, clickfillmarge) == 0 ){
  6667.         free(input_type);
  6668.         return CLICKFILLMARGE;
  6669.         }
  6670.         if( strcmp(input_type, xaxis) == 0 || strcmp(input_type, xaxistext) == 0 ){
  6671.         free(input_type);
  6672.         return X_AXIS_STRINGS;
  6673.         }
  6674.         if( strcmp(input_type, yaxis) == 0  ||  strcmp(input_type, yaxistext) == 0 ){
  6675.         free(input_type);
  6676.         return Y_AXIS_STRINGS;
  6677.         }
  6678.         if( strcmp(input_type, piechart) == 0  ){
  6679.         free(input_type);
  6680.         return PIECHART;
  6681.         }
  6682.         if( strcmp(input_type, barchart) == 0  ){
  6683.         free(input_type);
  6684.         return BARCHART;
  6685.         }
  6686.         if( strcmp(input_type, linegraph) == 0  ){
  6687.         free(input_type);
  6688.         return LINEGRAPH;
  6689.         }
  6690.         if( strcmp(input_type, clock) == 0  ){
  6691.         free(input_type);
  6692.         return CLOCK;
  6693.         }
  6694.         if( strcmp(input_type, legend) == 0  ){
  6695.         free(input_type);
  6696.         return LEGEND;
  6697.         }
  6698.         if( strcmp(input_type, legendcolors) == 0  ){
  6699.         free(input_type);
  6700.         return LEGENDCOLORS;
  6701.         }
  6702.         if( strcmp(input_type, xlabel) == 0  ){
  6703.         free(input_type);
  6704.         return XLABEL;
  6705.         }
  6706.         if( strcmp(input_type, ylabel) == 0  ){
  6707.         free(input_type);
  6708.         return YLABEL;
  6709.         }
  6710.         if( strcmp(input_type, animate) == 0  ){
  6711.         free(input_type);
  6712.         return ANIMATE;
  6713.         }
  6714.         /* these are bitmap related flydraw commmands...must be removed. eventually */
  6715.         if( strcmp(input_type, transparent) == 0 ){
  6716.         free(input_type);
  6717.         return TRANSPARENT;
  6718.         }
  6719.         if( strcmp(input_type, status) == 0 ){
  6720.         free(input_type);
  6721.         return STATUS;
  6722.         }
  6723.         if( strcmp(input_type, snaptogrid) == 0 ){
  6724.         free(input_type);
  6725.         return SNAPTOGRID;
  6726.         }
  6727.         if( strcmp(input_type, xsnaptogrid) == 0 ){
  6728.         free(input_type);
  6729.         return XSNAPTOGRID;
  6730.         }
  6731.         if( strcmp(input_type, ysnaptogrid) == 0 ){
  6732.         free(input_type);
  6733.         return YSNAPTOGRID;
  6734.         }
  6735.         if( strcmp(input_type, userinput_xy) == 0 ){
  6736.         free(input_type);
  6737.         return USERINPUT_XY;
  6738.         }
  6739.         if( strcmp(input_type, usertextarea_xy) == 0 ){
  6740.         free(input_type);
  6741.         return USERTEXTAREA_XY;
  6742.         }
  6743.         if( strcmp(input_type, sgraph) == 0 ){
  6744.         free(input_type);
  6745.         return SGRAPH;
  6746.         }
  6747.         if( strcmp(input_type, jsmath) == 0 ){
  6748.         free(input_type);
  6749.         return JSMATH;
  6750.         }
  6751.         if( strcmp(input_type, trace_jsmath) == 0 ){
  6752.         free(input_type);
  6753.         return TRACE_JSMATH;
  6754.         }
  6755.         if( strcmp(input_type, setlimits) == 0 ){
  6756.         free(input_type);
  6757.         return SETLIMITS;
  6758.         }
  6759.         free(input_type);
  6760.         ungetc(c,infile);
  6761.         return 0;
  6762. }
  6763.