| <!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <style> |
| body { |
| height: 1000px; |
| } |
| /* non-stacking context scroller */ |
| .scroller { |
| position: absolute; |
| top: 10px; |
| left: 10px; |
| height: 300px; |
| width: 300px; |
| border: 20px solid gray; |
| padding: 5px; |
| overflow: scroll; |
| } |
| .content { |
| width: 200%; |
| height: 300%; |
| } |
| |
| /* Stacking context is the root */ |
| .transformed { |
| margin: 50px; |
| height: 200px; |
| width: 200px; |
| background-color: gray; |
| transform: translateZ(1px); |
| } |
| </style> |
| <script src="../../../resources/js-test-pre.js"></script> |
| <script src="../../../resources/ui-helper.js"></script> |
| <script> |
| var jsTestIsAsync = true; |
| |
| var scroller; |
| var overflowScrollEventCount = 0; |
| var windowScrollEventCount = 0; |
| |
| async function resetScrollPositions() |
| { |
| window.scrollTo(0, 0); |
| scroller.scrollTop = 0; |
| |
| // Wait for scroll events to fire. |
| await UIHelper.renderingUpdate(); |
| |
| overflowScrollEventCount = 0; |
| windowScrollEventCount = 0; |
| } |
| |
| async function testScrollOverContent() |
| { |
| debug(''); |
| debug('Test scroll over content'); |
| await resetScrollPositions(); |
| await UIHelper.mouseWheelScrollAt(50, 50); |
| |
| shouldBe('overflowScrollEventCount > 0', 'true'); |
| shouldBe('windowScrollEventCount == 0', 'true'); |
| } |
| |
| async function testScrollOverTransformed() |
| { |
| debug(''); |
| debug('Test scroll over transformed element'); |
| await resetScrollPositions(); |
| await UIHelper.mouseWheelScrollAt(150, 150); |
| |
| shouldBe('overflowScrollEventCount > 0', 'true'); |
| shouldBe('windowScrollEventCount == 0', 'true'); |
| } |
| |
| async function scrollTest() |
| { |
| await testScrollOverContent(); |
| await testScrollOverTransformed(); |
| |
| finishJSTest(); |
| } |
| |
| window.addEventListener('load', () => { |
| scroller = document.querySelector('.scroller'); |
| scroller.addEventListener('scroll', () => { |
| ++overflowScrollEventCount; |
| }, false); |
| |
| window.addEventListener('scroll', () => { |
| ++windowScrollEventCount; |
| }, false); |
| |
| setTimeout(scrollTest, 0); |
| }, false); |
| </script> |
| </head> |
| <body> |
| <div class="scroller"> |
| <div class="content"> |
| <div class="transformed"></div> |
| </div> |
| </div> |
| <script src="../../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
