| <!DOCTYPE html> |
| <script src="../../resources/run-after-layout-and-paint.js"></script> |
| <style> |
| #box, #box-unchanged { |
| margin-left: 300px; |
| width: 50px; |
| height: 50px; |
| } |
| #box { |
| margin-top: 150px; |
| background-color: yellow; |
| } |
| #box-unchanged { |
| background-color: blue; |
| } |
| #container { |
| width: 500px; |
| height: 500px; |
| backface-visibility: hidden; |
| overflow: scroll; |
| } |
| </style> |
| Tests invalidation and painting of a box changing background while composited scrolled. |
| <div id="container"> |
| <div id="box"></div> |
| <div id="box-unchanged"></div> |
| <div style="height: 4000px"></div> |
| </div> |
| <script> |
| |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| runAfterLayoutAndPaint(function() { |
| var container = document.querySelector('#container'); |
| var box = document.querySelector("#box"); |
| container.scrollTop = 400; |
| box.style.backgroundColor = "green"; |
| runAfterLayoutAndPaint(function() { |
| container.scrollTop = 0; |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }); |
| }); |
| |
| </script> |
