| <!DOCTYPE html> |
| <script src="../resources/run-after-layout-and-paint.js"></script> |
| <style> |
| .box { |
| display: inline-block; |
| position: relative; |
| width: 200px; |
| height: 200px; |
| overflow: auto; |
| will-change: transform; |
| } |
| #space1 { |
| width: 300px; |
| height: 300px; |
| } |
| #space2 { |
| width: 800px; |
| height: 800px; |
| } |
| </style> |
| |
| This test verifies that composited scrollbars update correctly when removed and |
| reinserted with a different content size.<br><br> |
| |
| It passes if both boxes have identical scrollbars.<br><br> |
| |
| <div class="box"> |
| <div id="space1"></div> |
| </div> |
| <div class="box"> |
| <div id="space2"></div> |
| </div> |
| <script> |
| |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| runAfterLayoutAndPaint(function() { |
| var space = document.querySelector("#space1"); |
| |
| space.style.height = "0"; |
| space.style.width = "0"; |
| |
| // Force layout (but not compositing update). |
| // Scrollbars are destroyed. |
| space.clientWidth; |
| |
| space.style.height = "800px"; |
| space.style.width = "800px"; |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| </script> |
