| <!DOCTYPE html> <!-- webkit-test-runner [ internal:AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| .scroller { |
| position: relative; |
| z-index: 0; |
| overflow-y: scroll; |
| width: 300px; |
| height: 300px; |
| border: 1px solid black; |
| } |
| |
| .box { |
| position: relative; |
| margin: 20px; |
| width: 100px; |
| height: 100px; |
| background-color: green; |
| } |
| |
| .inside { |
| left: 20px; |
| } |
| |
| .outside { |
| position: relative; |
| margin: 20px; |
| width: 100px; |
| height: 100px; |
| background-color: silver; |
| } |
| |
| .trigger { |
| position: absolute; |
| top: 10px; |
| left: 10px; |
| width: 50px; |
| height: 200px; |
| background-color: silver; |
| transform: translateZ(0); |
| } |
| </style> |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| window.addEventListener('load', () => { |
| if (window.testRunner) |
| document.getElementById('layers').innerText = window.internals.layerTreeAsText(document); |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div class="scroller"> |
| <div class="trigger"></div> |
| <div class="inside box"></div> |
| <div class="inside box"></div> |
| <div class="inside box"></div> |
| <div class="inside box"></div> |
| </div> |
| <div class="outside"></div> |
| <pre id="layers">Layer tree goes here</pre> |
| </body> |
| </html> |
