| <!DOCTYPE html> |
| <!-- |
| This test ensures that reparented overlay scrollbars are positioned |
| correctly when the compositing container and the ancestor compositing |
| stacking context differ. |
| --> |
| <script> |
| if (window.internals) { |
| internals.useMockOverlayScrollbars(); |
| internals.settings.setPreferCompositingToLCDTextEnabled(true); |
| } |
| </script> |
| <style> |
| #container { |
| margin-right: auto; |
| margin-left: auto; |
| width: 1200px; |
| } |
| |
| .hidden { |
| overflow: hidden; |
| } |
| |
| #positioned { |
| position: relative; |
| overflow: hidden; |
| width: 1200px; |
| height: 800px; |
| } |
| |
| #scroller { |
| overflow: scroll; |
| width: 1200px; |
| height: 1000px; |
| } |
| |
| #background { |
| background: green; |
| height: 10000px; |
| } |
| |
| #foreground { |
| position: relative; |
| } |
| </style> |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| onload = function() { |
| if (window.internals) { |
| document.getElementById('console').innerHTML = internals.layerTreeAsText(document); |
| } |
| } |
| </script> |
| <div id="container"> |
| <div class="hidden"> |
| <div id="positioned"> |
| <div class="hidden"> |
| <div id="scroller"> |
| <div id="background"></div> |
| <div id="foreground"></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <pre id="console"></pre> |
