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

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script src="../../resources/run-after-display.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     if (window.internals)
  62         internals.settings.setLayerSquashingEnabled(true);
  63
  64     function runTest()
  65     {
  66         if (!window.internals)
  67             return;
  68         runAfterDisplay(executeTestCases);
  69     }
  70
  71     function executeTestCases()
  72     {
  73         // Case 1
  74         document.getElementById('Case1').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  75
  76         // Case 2
  77         window.internals.startTrackingRepaints(document);
  78         document.getElementById("forceComposited").className = "underneath";
  79         document.getElementById('Case2').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  80         window.internals.stopTrackingRepaints(document);
  81
  82         // Display the test results only after test is done so that it does not affect repaint rect results.
  83         document.getElementById('testResults').style.display = "block";
  84
  85         if (window.testRunner)
  86             testRunner.notifyDone();
  87     }
  88 </script>
  89 </head>
  90
  91 <body onload="runTest()">
  92
  93   <p>A squashing RenderLayer that becomes non-composited should correctly send
  94      a repaint invalidation to the new container GraphicsLayer that it paints
  95      into. When run interactively, hovering over the force-composited gray div
  96      should not cause other layers to disappear.</p>
  97
  98   <div id="forceComposited" class="composited underneath"></div>
  99   <div id="A" class="overlap1"></div>
 100   <div id="B" class="overlap2"></div>
 101   <div id="C" class="overlap3"></div>
 102
 103   <div id="testResults">
 104     CASE 1, original layer tree:
 105     <pre id="Case1"></pre>
 106
 107     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:
 108     <pre id="Case2"></pre>
 109
 110   </div>
 111
 112 </body>
 113
 114 </html>