| <!DOCTYPE html> |
| <html> |
| |
| <head> |
| <style> |
| body { |
| margin: 0; |
| height: 2500px; |
| } |
| |
| .box { |
| height: 100px; |
| width: 100px; |
| } |
| |
| .fixed { |
| position: fixed; |
| left: 0px; |
| top: 0px; |
| } |
| |
| .wrapper { |
| position: absolute; |
| background-color: green; |
| } |
| |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.waitUntilDone(); |
| testRunner.dumpAsText(); |
| if (window.internals) { |
| window.internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true); |
| window.internals.settings.setFixedPositionCreatesStackingContext(true); |
| } |
| } |
| |
| function doScroll() |
| { |
| window.setTimeout(function() { |
| window.scrollTo(0, 200); |
| if (window.internals) { |
| document.getElementById('results').innerText = internals.layerTreeAsText(document); |
| testRunner.notifyDone(); |
| } |
| }, 10); |
| } |
| |
| window.addEventListener('load', doScroll, false); |
| </script> |
| </head> |
| <body> |
| <pre id="results"></pre> |
| <div class="fixed"> |
| <div class="wrapper box"> |
| </div> |
| </div> |
| </body> |
| </html> |
