| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| .container { |
| height: 300px; |
| width: 400px; |
| border: 2px solid black; |
| overflow: hidden; |
| } |
| |
| .box { |
| height: 300px; |
| width: 2800px; |
| border: 1px solid black; |
| background-color: gray; |
| } |
| |
| .composited { |
| transform: translateZ(0); |
| } |
| |
| .masked { |
| -webkit-mask-image: url(../resources/alpha-gradient.png); |
| -webkit-mask-repeat: repeat-x; |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function getUIScript() |
| { |
| return ` |
| (function() { |
| uiController.removeViewFromWindow(function() { |
| uiController.uiScriptComplete(''); |
| }); |
| })();` |
| } |
| |
| function dumpTiles(outputId) |
| { |
| if (window.internals) |
| document.getElementById(outputId).innerText = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_TILE_CACHES); |
| } |
| function doTest() |
| { |
| if (!testRunner.runUIScript) |
| return; |
| |
| dumpTiles('before-layers'); |
| |
| testRunner.runUIScript(getUIScript(), function(result) { |
| dumpTiles('after-layers'); |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| } |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| <div class="composited container"> |
| <div class="composited masked box"></div> |
| </div> |
| |
| <pre id="before-layers">Layer tree goes here</pre> |
| <pre id="after-layers">Layer tree goes here</pre> |
| </body> |
| </html> |
