third_party/WebKit/LayoutTests/fast/scroll-behavior/smooth-scroll/mousewheel-scroll.html - Issue 1543043004: Reland of un smooth scroll animations on the compositor when possible

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Issue 1543043004: Reland of un smooth scroll animations on the compositor when possible (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 12 months ago

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	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 consecutive mouse wheel ticks scroll\

	14 to the right offset. The main purpose of this test is to ensure that\

	15 smooth scrolling on the compositor works as intended (tested via\

	16 virtual suite virtual/threaded/).");

	17

	18 function runTest() {

	19 if (!window.eventSender \|\| !window.internals) {

	20 finishJSTest();

	21 return;

	22 }

	23

	24 // Turn on smooth scrolling.

	25 internals.settings.setScrollAnimatorEnabled(true);

	26

	27 eventSender.mouseMoveTo(20, 20);

	28 // Scroll down 3 ticks.

	29 eventSender.mouseScrollBy(0, -1);

	30 eventSender.mouseScrollBy(0, -1);

	31 eventSender.mouseScrollBy(0, -1);

	32 // Scroll right 3 ticks.

	33 eventSender.mouseScrollBy(-1, 0);

	34 eventSender.mouseScrollBy(-1, 0);

	35 eventSender.mouseScrollBy(-1, 0);

	36 // Undo 1 tick in each direction.

	37 eventSender.mouseScrollBy(0, 1);

	38 eventSender.mouseScrollBy(1, 0);

	39

	40 // 40px per tick.

	41 shouldBecomeEqual("document.scrollingElement.scrollTop == 80 && " +

	42 "document.scrollingElement.scrollLeft == 80", "true", finishJSTest);

	43 }

	44 </script>

	45

	46 <body onload="runTest()"></body>

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