| <!DOCTYPE html> |
| <head> |
| <script src="../../resources/run-after-layout-and-paint.js"></script> |
| <style> |
| .composited { |
| will-change: transform; |
| } |
| |
| .box { |
| width: 100px; |
| height: 100px; |
| } |
| |
| .behind { |
| position: absolute; |
| z-index: 1; |
| top: 50px; |
| left: 50px; |
| background-color: blue; |
| } |
| |
| .top { |
| position: absolute; |
| z-index: 1; |
| top: 130px; |
| left: 130px; |
| background-color: cyan; |
| } |
| |
| #inner { |
| position:absolute; |
| top:10px; |
| left: 10px; |
| height: 50px; width: 50px; |
| background-color: lightslategray; |
| z-index: 2 |
| } |
| |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function runTest() |
| { |
| runAfterLayoutAndPaint(executeTestCases); |
| } |
| |
| function executeTestCases() |
| { |
| internals.startTrackingRepaints(document); |
| document.getElementById('Case1').textContent = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_INVALIDATIONS); |
| internals.stopTrackingRepaints(document); |
| |
| internals.startTrackingRepaints(document); |
| document.querySelector("#inner").style.backgroundColor = 'red'; |
| document.getElementById('Case2').textContent = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_INVALIDATIONS); |
| internals.stopTrackingRepaints(document); |
| |
| // Display the test results only after test is done so that it does not affect repaint rect results. |
| document.getElementById('testResults').style.display = "block"; |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| </script> |
| </head> |
| <body onload="runTest()"> |
| <div class="composited box behind"></div> |
| |
| <div class="box top"> |
| <div id="inner"> |
| </div> |
| </div> |
| |
| <div id="testResults" style="display:none"> |
| CASE 1, original layer tree |
| <pre id="Case1"></pre> |
| |
| CASE 2, change color of "inner" to red |
| <pre id="Case2"></pre> |
| </div> |
| </body> |
