| <!DOCTYPE html> |
| <html> |
| <head> |
| <style type="text/css"> |
| #overlay { |
| position: absolute; |
| left: 10px; |
| top: 10px; |
| width: 400px; |
| height: 100px; |
| z-index: 1; |
| background-color: rgba(0, 0, 0, 0.5); |
| } |
| |
| #container { |
| position: absolute; |
| left: 200px; |
| top: 8px; |
| width: 200px; |
| z-index: 2; |
| border: 2px solid blue; |
| } |
| |
| #composited { |
| -webkit-transform: translateZ(0); |
| width: 20px; |
| height: 20px; |
| } |
| |
| #scroller { |
| height: 200px; |
| background-color: yellow; |
| overflow-y: scroll; |
| } |
| |
| #scroller > div { |
| height: 400px; |
| } |
| |
| pre { |
| margin-top: 200px; |
| } |
| </style> |
| <script type="text/javascript" charset="utf-8"> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function doTest() |
| { |
| window.setTimeout(function() { |
| document.getElementById('scroller').scrollTop = 50; |
| if (window.testRunner) { |
| document.getElementById('results').innerText = window.internals.layerTreeAsText(document); |
| testRunner.notifyDone(); |
| } |
| }, 20); |
| } |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| |
| <div id="composited"></div> |
| |
| <div id="overlay"></div> |
| |
| <div id="container"> |
| <div id="scroller"> |
| <div>scroll me</div> |
| </div> |
| </div> |
| <pre id="results"></pre> |
| </body> |
| </html> |
