third_party/WebKit/LayoutTests/compositing/squashing/squashed-layer-loses-graphicslayer.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script src="../../resources/run-after-layout-and-paint.js"></script>
   5 <style>
   6 div {
   7   position: absolute;
   8   z-index: 1;
   9   width: 100px;
  10   height: 100px;
  11 }
  12
  13 .composited {
  14   transform: translatez(0);
  15 }
  16
  17 .underneath {
  18   top: 60px;
  19   left: 60px;
  20   background-color: gray;
  21 }
  22
  23 .overlap1 {
  24   top: 140px;
  25   left: 140px;
  26   background-color: blue;
  27 }
  28
  29 .overlap2 {
  30   top: 220px;
  31   left: 220px;
  32   background-color: lime;
  33 }
  34
  35 .overlap3 {
  36   top: 300px;
  37   left: 300px;
  38   background-color: magenta;
  39 }
  40
  41 div:hover {
  42   background-color: green;
  43   transform: none;
  44 }
  45
  46 .green {
  47   background-color: green;
  48 }
  49
  50 #testResults {
  51   display: none;
  52 }
  53
  54 </style>
  55 <script>
  56     if (window.testRunner) {
  57         testRunner.dumpAsText();
  58         testRunner.waitUntilDone();
  59     }
  60
  61     function runTest()
  62     {
  63         if (!window.internals)
  64             return;
  65         runAfterLayoutAndPaint(executeTestCases);
  66     }
  67
  68     function executeTestCases()
  69     {
  70         // Case 1
  71         document.getElementById('Case1').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  72
  73         // Case 2
  74         window.internals.startTrackingRepaints(document);
  75         document.getElementById("forceComposited").className = "underneath";
  76         document.getElementById('Case2').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  77         window.internals.stopTrackingRepaints(document);
  78
  79         // Display the test results only after test is done so that it does not affect repaint rect results.
  80         document.getElementById('testResults').style.display = "block";
  81
  82         if (window.testRunner)
  83             testRunner.notifyDone();
  84     }
  85 </script>
  86 </head>
  87
  88 <body onload="runTest()">
  89
  90   <p>A squashing Layer that becomes non-composited should correctly send
  91      a repaint invalidation to the new container GraphicsLayer that it paints
  92      into. When run interactively, hovering over the force-composited gray div
  93      should not cause other layers to disappear.</p>
  94
  95   <div id="forceComposited" class="composited underneath"></div>
  96   <div id="A" class="overlap1"></div>
  97   <div id="B" class="overlap2"></div>
  98   <div id="C" class="overlap3"></div>
  99
 100   <div id="testResults">
 101     CASE 1, original layer tree:
 102     <pre id="Case1"></pre>
 103
 104     CASE 2, The original composited layer is no longer composited, which then also removes all squashing layers. The important point is that there should be an appropriate repaint to the root GraphicsLayer:
 105     <pre id="Case2"></pre>
 106
 107   </div>
 108
 109 </body>
 110
 111 </html>