| <!DOCTYPE html> |
| <html> |
| <style> |
| body { |
| height: 2000px; |
| } |
| |
| .box { |
| width: 3000px; |
| height: 100px; |
| margin: 50px; |
| background-color: silver; |
| } |
| |
| .composited { |
| transform: translateZ(0); |
| } |
| |
| body.changed .box { |
| background-image: linear-gradient(silver, gray); |
| } |
| </style> |
| <script src="../../../resources/js-test-pre.js"></script> |
| <script src="../../../resources/ui-helper.js"></script> |
| <script> |
| var jsTestIsAsync = true; |
| |
| let windowScrollEventCount = 0; |
| |
| async function resetScrollPositions() |
| { |
| window.scrollTo(0, 0); |
| |
| // Wait for scroll events to fire. |
| await UIHelper.renderingUpdate(); |
| |
| windowScrollEventCount = 0; |
| } |
| |
| async function testScroll() |
| { |
| await resetScrollPositions(); |
| await UIHelper.mouseWheelScrollAt(100, 100); |
| shouldBe('windowScrollEventCount', '0'); |
| } |
| |
| async function scrollTest() |
| { |
| debug(''); |
| debug('Test that scroll over box does not scroll page'); |
| await testScroll(); |
| |
| document.body.classList.add('changed'); |
| |
| debug(''); |
| debug('Test that scroll over box does not scroll page after switch to tiled layer'); |
| await testScroll(); |
| |
| finishJSTest(); |
| } |
| |
| window.addEventListener('load', () => { |
| |
| for (let active of document.querySelectorAll('.active')) { |
| active.addEventListener('wheel', (event) => { |
| event.preventDefault(); |
| }, { passive: false }); |
| } |
| |
| window.addEventListener('scroll', () => { |
| ++windowScrollEventCount; |
| }, false); |
| |
| setTimeout(scrollTest, 0); |
| }, false); |
| </script> |
| <body> |
| <div class="active composited box"></div> |
| <div id="console"></div> |
| <script src="../../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
| |
