chrome/test/data/third_party/spaceport/js/sprites/sources/image.js

   1 define([ 'util/ensureCallback' ], function (ensureCallback) {
   2     var IMAGE_SRC = 'assets/html5-logo.png';
   3
   4     function ImageSource(img) {
   5         this.img = img;
   6
   7         this.frameInfo = {
   8             x: 0,
   9             y: 0,
  10             width: img.width,
  11             height: img.height,
  12             image: img,
  13             sheetImage: img
  14         };
  15     }
  16
  17     ImageSource.prototype.getImage = function getImage(frameIndex) {
  18         return this.img;
  19     };
  20
  21     ImageSource.prototype.drawToCanvas = function drawToCanvas(context, dx, dy, frameIndex) {
  22         context.drawImage(this.img, dx, dy);
  23     };
  24
  25     ImageSource.prototype.getFrameInfo = function getFrameInfo(frameIndex) {
  26         return this.frameInfo;
  27     };
  28
  29     return function image(callback) {
  30         callback = ensureCallback(callback);
  31
  32         var img = new window.Image();
  33         img.onload = function () {
  34             var imageSource = new ImageSource(img);
  35             callback(null, imageSource);
  36         };
  37         img.src = IMAGE_SRC;
  38     };
  39 });