js2/mwEmbed/libClipEdit/pixastic-lib/actions/flipv.js

   1 /*
   2  * Pixastic Lib - Vertical flip - v0.1.0
   3  * Copyright (c) 2008 Jacob Seidelin, jseidelin@nihilogic.dk, http://blog.nihilogic.dk/
   4  * MIT License [http://www.opensource.org/licenses/mit-license.php]
   5  */
   6
   7 Pixastic.Actions.flipv = {
   8         process : function(params) {
   9                 if (Pixastic.Client.hasCanvas()) {
  10                         var rect = params.options.rect;
  11                         var copyCanvas = document.createElement("canvas");
  12                         copyCanvas.width = rect.width;
  13                         copyCanvas.height = rect.height;
  14                         copyCanvas.getContext("2d").drawImage(params.image, rect.left, rect.top, rect.width, rect.height, 0, 0, rect.width, rect.height);
  15
  16                         var ctx = params.canvas.getContext("2d");
  17                         ctx.clearRect(rect.left, rect.top, rect.width, rect.height);
  18                         ctx.scale(1,-1);
  19                         ctx.drawImage(copyCanvas, rect.left, -rect.top-rect.height, rect.width, rect.height)
  20                         params.useData = false;
  21
  22                         return true;
  23
  24                 } else if (Pixastic.Client.isIE()) {
  25                         params.image.style.filter += " flipv";
  26                         return true;
  27                 }
  28         },
  29         checkSupport : function() {
  30                 return (Pixastic.Client.hasCanvas() || Pixastic.Client.isIE());
  31         }
  32 }
  33