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

   1 /*
   2  * Pixastic Lib - Crop - 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.crop = {
   8         process : function(params) {
   9                 if (Pixastic.Client.hasCanvas()) {
  10                         var rect = params.options.rect;
  11
  12                         var copy = document.createElement("canvas");
  13                         copy.width = params.width;
  14                         copy.height = params.height;
  15                         copy.getContext("2d").drawImage(params.canvas,0,0);
  16
  17                         params.canvas.width = rect.width;
  18                         params.canvas.height = rect.height;
  19                         params.canvas.getContext("2d").clearRect(0,0,rect.width,rect.height);
  20
  21                         params.canvas.getContext("2d").drawImage(copy,
  22                                 rect.left,rect.top,rect.width,rect.height,
  23                                 0,0,rect.width,rect.height
  24                         );
  25
  26                         params.useData = false;
  27                         return true;
  28                 }
  29         },
  30         checkSupport : function() {
  31                 return Pixastic.Client.hasCanvas();
  32         }
  33 }
  34
  35