third_party/WebKit/LayoutTests/compositing/squashing/squashed-repaints.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   top: 60px;
  16   left: 60px;
  17   background-color: gray;
  18 }
  19
  20 .overlap1 {
  21   top: 140px;
  22   left: 140px;
  23   background-color: blue;
  24 }
  25
  26 .overlap2 {
  27   top: 220px;
  28   left: 220px;
  29   background-color: lime;
  30 }
  31
  32 .overlap3 {
  33   top: 300px;
  34   left: 300px;
  35   background-color: magenta;
  36 }
  37
  38 div:hover {
  39   background-color: green;
  40 }
  41
  42 .green {
  43   background-color: green;
  44 }
  45
  46 #testResults {
  47   display: none;
  48 }
  49
  50 </style>
  51 <script>
  52     if (window.testRunner) {
  53         testRunner.dumpAsText();
  54         testRunner.waitUntilDone();
  55     }
  56
  57     function runTest()
  58     {
  59         if (!window.internals)
  60             return;
  61         runAfterLayoutAndPaint(executeTestCases);
  62     }
  63
  64     function executeTestCases()
  65     {
  66         // Case 1
  67         document.getElementById('Case1').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  68
  69         // Case 2
  70         window.internals.startTrackingRepaints(document);
  71         document.getElementById("A").style.backgroundColor = "green";
  72         document.getElementById('Case2').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  73         window.internals.stopTrackingRepaints(document);
  74
  75         // Case 3
  76         window.internals.startTrackingRepaints(document);
  77         document.getElementById("A").style.backgroundColor = "blue";
  78         document.getElementById("B").style.backgroundColor = "green";
  79         document.getElementById('Case3').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  80         window.internals.stopTrackingRepaints(document);
  81
  82         // Case 4
  83         window.internals.startTrackingRepaints(document);
  84         document.getElementById("B").style.backgroundColor = "blue";
  85         document.getElementById("C").style.backgroundColor = "green";
  86         document.getElementById('Case4').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  87         window.internals.stopTrackingRepaints(document);
  88
  89         // Case 5
  90         window.internals.startTrackingRepaints(document);
  91         document.getElementById("C").style.backgroundColor = "blue";
  92         document.getElementById("A").style.backgroundColor = "green";
  93         document.getElementById('Case5').textContent = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);
  94         window.internals.stopTrackingRepaints(document);
  95
  96         // Display the test results only after test is done so that it does not affect repaint rect results.
  97         document.getElementById('testResults').style.display = "block";
  98
  99         if (window.testRunner)
 100             testRunner.notifyDone();
 101     }
 102 </script>
 103 </head>
 104
 105 <body onload="runTest()">
 106
 107   <p>Basic repaint test for squashed layers. The entire squashing layer should not need repainting when
 108   only a portion of it is invalidated. Test interactively by using --show-paint-rects and hovering
 109   over elements to change their color.</p>
 110
 111   <div class="composited"></div>
 112   <div id="A" class="overlap1"></div>
 113   <div id="B" class="overlap2"></div>
 114   <div id="C" class="overlap3"></div>
 115
 116   <div id="testResults">
 117     CASE 1, original layer tree:
 118     <pre id="Case1"></pre>
 119
 120     CASE 2, overlap1 changes color:
 121     <pre id="Case2"></pre>
 122
 123     CASE 3, overlap1 and overlap2 change color:
 124     <pre id="Case3"></pre>
 125
 126     CASE 4, overlap2 and overlap3 change color:
 127     <pre id="Case4"></pre>
 128
 129     CASE 5, overlap3 and overlap1 change color:
 130     <pre id="Case5"></pre>
 131   </div>
 132
 133 </body>
 134
 135 </html>