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Issue 282743002:
Fix page jumping back to initial position after an overflow-bounce scroll. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master| Index: LayoutTests/rubberbanding/scroll-bounce-fix.html |
| diff --git a/LayoutTests/rubberbanding/scroll-bounce-fix.html b/LayoutTests/rubberbanding/scroll-bounce-fix.html |
| new file mode 100644 |
| index 0000000000000000000000000000000000000000..1c5e9a024d003ad8b134b05a08ef87ade394d99e |
| --- /dev/null |
| +++ b/LayoutTests/rubberbanding/scroll-bounce-fix.html |
| @@ -0,0 +1,89 @@ |
| +<!DOCTYPE html> |
| +<html> |
| +<head><title>Tests that a momentum scroll (i.e. a fling) doesn't jump vertically</title></head> |
| +<body> |
| +<div id="box" style="height:800px; background: red; border:2px solid black; width:100%"></div> |
| +<div id="info">This test requires DRT.</div> |
| +<script> |
| + if (window.internals) { |
| + document.getElementById('info').style.visibility = 'hidden'; |
| + internals.settings.setMockScrollbarsEnabled(false); |
| + |
| + // These trackpad scroll events first go up, then left, then down & left. All events except the last 2 were obtained by recording real gesture data. The goal is to get rubber-banding to occur while maintaining high velocity in the X and Y directions. |
| + var trackpadScrollEvents = [ |
| + ["scrollBegin"], |
| + ["scroll", -1, 4], |
| + ["scroll", -5, 14], |
| + ["scroll", -5, 23], |
| + ["scroll", -12, 57], |
| + ["scroll", -11, 68], |
| + ["scroll", -9, 85], |
| + ["scroll", -3, 77], |
| + ["scroll", -1, 109], |
| + ["scroll", 4, 105], |
| + ["scroll", 22, 106], |
| + ["scroll", 47, 60], |
| + ["scroll", 102, 32], |
| + ["scroll", 210, -1], |
| + ["scroll", 281, -23], |
| + ["scroll", 453, -103], |
| + ["scroll", 600, -223], |
| + ["scroll", 800, -303], |
| + ["scrollEnd"], |
| + ["momentumBegin", 555, -120], |
| + ["momentumEnd"] |
| + ]; |
| + |
| + function queueTimeout(index) |
| + { |
| + setTimeout(function() { runTimeout(index); }, 5); |
| + } |
| + |
| + // Replays the event at position |index|. |
| + function runTimeout(index) |
| + { |
| + var name = trackpadScrollEvents[index][0]; |
| + if (name == "scrollBegin") { |
| + eventSender.trackpadScrollBegin(); |
| + } else if (name == "scroll") { |
| + var deltaX = trackpadScrollEvents[index][1]; |
| + var deltaY = trackpadScrollEvents[index][2]; |
| + eventSender.trackpadScroll(deltaX, deltaY, false, true); |
| + } else if (name == "scrollEnd") { |
| + eventSender.trackpadScrollEnd(); |
| + } else if (name == "momentumBegin") { |
| + var deltaX = trackpadScrollEvents[index][1]; |
| + var deltaY = trackpadScrollEvents[index][2]; |
| + eventSender.mouseMomentumBegin2(deltaX, deltaY, false, true); |
| + } else if (name == "momentumEnd") { |
| + eventSender.mouseMomentumEnd(); |
| + } |
| + |
| + // Queues another event, if one is available. |
| + if (index + 1 < trackpadScrollEvents.length) { |
| + queueTimeout(index + 1); |
| + } |
| + } |
| + |
| + // Queue the first event for replay. |
| + queueTimeout(0); |
| + |
| + // The ScrollElasticityController receives callbacks every 16ms, and animates the release effect of the rubber-band. Wait for 2 seconds to give the animation time to settle. |
| + testRunner.waitUntilDone(); |
| + setTimeout(function() { |
| + document.getElementById('box').style.background = 'green'; |
| + // The left margin should have rebounded back to 0. |
| + if (document.documentElement.scrollLeft != 0) { |
| + document.getElementById('box').style.background = 'yellow'; |
| + } |
| + // The content should be scrolled to the bottom. |
| + var expectedScrollTop = document.documentElement.scrollHeight - document.documentElement.clientHeight; |
| + if (document.documentElement.scrollTop != expectedScrollTop) { |
| + document.getElementById('box').style.background = 'yellow'; |
| + } |
| + testRunner.notifyDone(); |
| + }, 2000); |
|
Nico
2014/05/14 10:53:31
:-/
|
| + } |
| +</script> |
| +</body> |
| +</html> |
