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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <script src="../../../../../resources/js-test.js"></script> |
| 3 <style> |
| 4 body { |
| 5 height: 2000px; |
| 6 width: 2000px; |
| 7 } |
| 8 </style> |
| 9 |
| 10 <script> |
| 11 window.jsTestIsAsync = true; |
| 12 |
| 13 description("This test ensures that input driven user scrolls get cancelled\ |
| 14 by non-input driven scrolls."); |
| 15 |
| 16 // From ScrollAnimatorCompositorCoordinator::RunState. |
| 17 var IDLE = 0; |
| 18 var RUNNING_ON_COMPOSITOR = 2; |
| 19 var WAITING_TO_CANCEL_ON_COMPOSITOR = 5; |
| 20 function isOrWillBeCancelled(node) { |
| 21 var state = internals.getScrollAnimationState(node); |
| 22 return state == WAITING_TO_CANCEL_ON_COMPOSITOR || state == IDLE; |
| 23 } |
| 24 |
| 25 function runTest() { |
| 26 if (document.scrollingElement.scrollTop == 0) { |
| 27 requestAnimationFrame(runTest); |
| 28 } else { |
| 29 shouldBeTrue("internals.getScrollAnimationState(document) " + |
| 30 "== RUNNING_ON_COMPOSITOR"); |
| 31 |
| 32 // Programmatic scroll should cancel smooth scroll. |
| 33 document.scrollingElement.scrollBy({top: 1, behavior: "smooth"}); |
| 34 shouldBeTrue("isOrWillBeCancelled(document)"); |
| 35 shouldBecomeEqual("document.scrollingElement.scrollTop < 40 && " + |
| 36 "document.scrollingElement.scrollLeft == 0", "true", finishJSTest); |
| 37 } |
| 38 } |
| 39 |
| 40 onload = function() { |
| 41 if (!window.eventSender || !window.internals) { |
| 42 finishJSTest(); |
| 43 return; |
| 44 } |
| 45 |
| 46 // Turn on smooth scrolling. |
| 47 internals.settings.setScrollAnimatorEnabled(true); |
| 48 |
| 49 document.scrollingElement.scrollTop = 0; |
| 50 |
| 51 // Scroll down 1 tick (40px). |
| 52 eventSender.mouseMoveTo(20, 20); |
| 53 eventSender.mouseScrollBy(0, -1); |
| 54 |
| 55 requestAnimationFrame(runTest); |
| 56 } |
| 57 </script> |
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Chromium Code Reviews
Issue 1678713002:
Correctly handle cancelling compositor animations initiated from main thread. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master