| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <style> |
| .verticalGallery { |
| width: 100vw; |
| height: 600vh; |
| margin: 0; |
| padding: 0; |
| scroll-snap-type: y mandatory; |
| } |
| .colorBox { |
| height: 100vh; |
| width: 100vw; |
| float: left; |
| scroll-snap-align: start; |
| } |
| #item0 { background-color: red; } |
| #item1 { background-color: green; } |
| #item2 { background-color: blue; } |
| #item3 { background-color: aqua; } |
| #item4 { background-color: yellow; } |
| #item5 { background-color: fuchsia; } |
| </style> |
| <script src="../../../resources/js-test.js"></script> |
| <script> |
| window.jsTestIsAsync = true; |
| |
| function scrollSnapTest() { |
| var startPosX = document.body.offsetLeft + 20; |
| var startPosY = document.body.offsetTop + 20; |
| eventSender.mouseMoveTo(startPosX, startPosY); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'began', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(-1, 0, 'changed', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(-1, 0, 'changed', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(-1, 0, 'changed', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(-1, 0, 'none', 'begin'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(-4, 0, 'none', 'continue'); |
| eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end'); |
| eventSender.callAfterScrollingCompletes(() => { |
| if (document.body.scrollTop == 0) |
| testPassed("scroll offset snapped back to top."); |
| else |
| testFailed(`did not honor snap points (expected 0, observed ${document.body.scrollTop}).`); |
| |
| finishJSTest(); |
| }); |
| } |
| |
| function onLoad() { |
| if (window.eventSender) { |
| eventSender.monitorWheelEvents(); |
| internals.setPlatformMomentumScrollingPredictionEnabled(false); |
| setTimeout(scrollSnapTest, 0); |
| } else { |
| var messageLocation = document.getElementById('item0'); |
| var message = document.createElement('div'); |
| message.innerHTML = `<p>This test is better run under DumpRenderTree. To manually test it, scroll down |
| slightly, and then directly to the left or right with momentum without lifting your fingers from the |
| trackpad. The scroll offset should animate to the nearest snap offset.</p>`; |
| messageLocation.appendChild(message); |
| } |
| } |
| </script> |
| </head> |
| <body onload="onLoad();" class="verticalGallery"> |
| <div id="item0" class="colorBox"><div id="console"></div></div> |
| <div id="item1" class="colorBox"></div> |
| <div id="item2" class="colorBox"></div> |
| <div id="item3" class="colorBox"></div> |
| <div id="item4" class="colorBox"></div> |
| <div id="item5" class="colorBox"></div> |
| </body> |
| </html> |
