src/third_party/WebKit/LayoutTests/compositing/squashing/squash-simple.html

   1 <!DOCTYPE html>
   2 <head>
   3 <style>
   4 .composited {
   5 transform: translatez(0);
   6 }
   7
   8 .box {
   9   width: 100px;
  10   height: 100px;
  11 }
  12
  13 .behind {
  14   position: absolute;
  15   z-index: 1;
  16   top: 100px;
  17   left: 100px;
  18   background-color: blue;
  19 }
  20
  21 .middle {
  22   position: absolute;
  23   z-index: 1;
  24   top: 20px;
  25   left: 20px;
  26   background-color: lime;
  27 }
  28
  29 .top {
  30   position: absolute;
  31   z-index: 1;
  32   top: 180px;
  33   left: 180px;
  34   background-color: cyan;
  35 }
  36
  37 div:hover {
  38   background-color: green;
  39 }
  40
  41 </style>
  42 <script>
  43     if (window.testRunner)
  44         testRunner.dumpAsText();
  45
  46     if (window.internals)
  47         internals.settings.setLayerSquashingEnabled(true);
  48
  49     function runTest()
  50     {
  51         if (!window.internals) {
  52             alert('This test requires window.internals')
  53             return;
  54         }
  55
  56         document.body.textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  57         document.body.style.whiteSpace = 'pre';
  58     }
  59 </script>
  60 </head>
  61 <body onload="runTest()">
  62 <div class="composited box behind"></div>
  63 <div class="box middle"></div>
  64 <div class="box top"></div>
  65 </body>