third_party/WebKit/LayoutTests/fast/images/animated-gif-advance-frames.html

   1 <!DOCTYPE HTML>
   2 <img id="a" width="25" height="25" src="resources/green-red-blue-yellow-animated.gif?a">
   3 <img id="b" width="25" height="25" src="resources/green-red-blue-yellow-animated.gif?b">
   4 <img id="c" width="25" height="25" src="resources/green-red-blue-yellow-animated.gif?c">
   5 <img id="d" width="25" height="25" src="resources/green-red-blue-yellow-animated.gif?d">
   6 <img id="e" width="25" height="25" src="resources/green-red-blue-yellow-animated.gif?e">
   7 <script>
   8 if (window.testRunner)
   9   testRunner.waitUntilDone();
  10
  11 window.onload = function() {
  12   // Jump to the 2nd frame.
  13   window.internals.advanceImageAnimation(b);
  14
  15   // Jump to the 3rd frame.
  16   for (var i = 0; i < 2; i++)
  17     window.internals.advanceImageAnimation(c);
  18
  19   // Jump to the 4th frame.
  20   for (var i = 0; i < 3; i++)
  21     window.internals.advanceImageAnimation(d);
  22
  23   // Ensure the animation can loop and get back to the first frame.
  24   for (var i = 0; i < 4; i++)
  25     window.internals.advanceImageAnimation(e);
  26
  27   requestAnimationFrame(function() {
  28     if (window.testRunner)
  29       testRunner.notifyDone();
  30   });
  31 }
  32 </script>