| <!DOCTYPE html> |
| <script src='../../resources/testharness.js'></script> |
| <script src='../../resources/testharnessreport.js'></script> |
| <script src='../../resources/gesture-util.js'></script> |
| <div style="height:200px;width:2400px"> |
| <div style="background-color:red;height:200px;width:1200px;position:relative;left:0px;top:0px"></div> |
| <div style="background-color:green;height:200px;width:1200px;position:relative;left:1200px;top:-200px"></div> |
| </div> |
| <div style="height:200px;width:2400px"> |
| <div style="background-color:blue;height:200px;width:1200px;position:relative;left:0px;top:0px"></div> |
| <div style="background-color:yellow;height:200px;width:1200px;position:relative;left:1200px;top:-200px"></div> |
| </div> |
| |
| <script> |
| const scrollDelta = 2; |
| var last_event = null; |
| var source = GestureSourceType.MOUSE_INPUT; |
| const numTicksY = scrollDelta / pixelsPerTick(); |
| const expectedWheelDeltaY = numTicksY * LEGACY_MOUSE_WHEEL_TICK_MULTIPLIER; |
| |
| function mousewheelHandler(e) |
| { |
| last_event = e; |
| } |
| |
| promise_test(async () => { |
| document.body.addEventListener("mousewheel", mousewheelHandler, false); |
| |
| await smoothScroll(scrollDelta, 100, 110, source, 'down', SPEED_INSTANT, false /* precise_scrolling_deltas */, true /* scroll_by_page */); |
| await conditionHolds( () => { |
| return document.scrollingElement.scrollTop == 0; |
| }); |
| assert_equals(last_event.wheelDeltaY, -Math.floor(expectedWheelDeltaY)); |
| assert_equals(last_event.wheelDeltaX, 0); |
| assert_equals(last_event.wheelDelta, -Math.floor(expectedWheelDeltaY)); |
| }, "Page-based wheel scrolls provide correct delta in event handler, don't scroll if there's no " + |
| "overflow in direction when scrolling on document."); |
| </script> |
