WebSVN – wimsdev – Diff – /trunk/wims/src/Misc/canvasdraw/canvasdraw.c

     int int_data[MAX_INT+1];
     for(i=0;i<MAX_INT;i++){int_data[i]=0;double_data[i]=0;}
     int use_parametric = FALSE;/* will be reset after parametric plotting */
     int use_axis = FALSE;
     int use_axis_numbering = FALSE;
+    int use_pan_and_zoom = FALSE;
     int line_width = 1;
     int decimals = 2;
     int precision = 100; /* 10 = 1;100=2;1000=3 decimal display for mouse coordinates or grid coordinate */
     int use_userdraw = FALSE; /* flag to indicate user interaction: incompatible with "drag & drop" code !! */
     int drag_type = -1;/* 0,1,2 : xy,x,y */
 fprintf(js_include_file,"\n<!-- begin generated javascript include for canvasdraw -->\n");
 fprintf(stdout,"<!-- include actual object code via include file -->\n<script type=\"text/javascript\" src=\"%s\"></script>\n",getfile_cmd);
 fprintf(js_include_file,"var wims_canvas_function%d = function(){\n<!-- common used stuff -->\n\
 var xsize = %d;\
 var ysize = %d;\
+var precision = 100;\
 var canvas_div = document.getElementById(\"canvas_div%d\");\
 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;};\
 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;};\
 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);};};\
 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);};};\
          @ command 'opacity' may be used to set stroke_opacity of 'buttons
          @ NOTE: only objects that may be set draggable / clickable will be zoomed / panned
          @ 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 !!
         */
             fprintf(js_include_file,"use_pan_and_zoom = 1;");
+            use_pan_and_zoom = TRUE;
             if( js_function[DRAW_ZOOM_BUTTONS] != 1 ){ js_function[DRAW_ZOOM_BUTTONS] = 1;}
             /* we use BG_CANVAS (0) */
             stroke_color = get_color(infile,1);
             string_length = snprintf(NULL,0," draw_zoom_buttons(%d,\"%s\",%f);",BG_CANVAS,stroke_color,stroke_opacity);
             check_string_length(string_length);tmp_buffer = my_newmem(string_length+1);
   /* using mouse coordinate display ? */
   if( use_mouse_coordinates == TRUE ){
     tmp_buffer = my_newmem(26);
     snprintf(tmp_buffer,25,"use_mouse_coordinates();\n");add_to_buffer(tmp_buffer);
+  }
+  if( use_pan_and_zoom == TRUE ){
-  /* add global variables / contants */
+  /* in case of zooming ... */
   fprintf(js_include_file,"\n<!-- some extra global stuff : need to rethink panning and zooming !!! -->\n\
-  var precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
+  precision = %d;var xmin_start=xmin;var xmax_start=xmax;\
   var ymin_start=ymin;var ymax_start=xmax;\
   var zoom_x_increment=0;var zoom_y_increment=0;\
   var pan_x_increment=0;var pan_y_increment=0;\
   if(use_ylogscale == 0 ){\
    zoom_x_increment = (xmax - xmin)/20;zoom_y_increment = (xmax - xmin)/20;pan_x_increment = (xmax - xmin)/20;pan_y_increment = (ymax - ymin)/20;\
    if(xmax<=xmin){xmin=xmin_start;xmax=xmax_start;};\
    if(ymax<=ymin){ymin=ymin_start;ymax=ymax_start;};\
    try{dragstuff.Zoom(xmin,xmax,ymin,ymax);}catch(e){}\
    %s\
   };\
+  start_canvas%d(333);\
  };\n\
 <!-- end wims_canvas_function -->\n\
-wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id);
+wims_canvas_function%d();\n",precision,canvas_root_id,buffer,canvas_root_id,canvas_root_id);
+  }
+  else
+  {
+  /* no zoom, just add buffer */
+  fprintf(js_include_file,"\n<!-- add buffer -->\n\
+  %s\
+ };\n\
+<!-- end wims_canvas_function -->\n\
+wims_canvas_function%d();\n",buffer,canvas_root_id);
+  }
 /* done writing the javascript include file */
 fclose(js_include_file);
+}

Subversion Repositories wimsdev

(root)/trunk/wims/src/Misc/canvasdraw/canvasdraw.c – Rev 7796 → 7797