| <!DOCTYPE html> |
| <title>Tests mouse interactions on a non-custom composited root scrollbar thumb.</title> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <script src="../../../resources/gesture-util.js"></script> |
| <script src="../../../resources/scrollbar-util.js"></script> |
| <body style="height: 1000px; width: 1000px"> |
| <script> |
| window.onload = () => { |
| const TRACK_WIDTH = calculateScrollbarThickness(); |
| const BUTTON_WIDTH = TRACK_WIDTH; |
| |
| promise_test (async () => { |
| if(navigator.userAgent.includes("Mac OS X")) |
| return; |
| |
| resetScrollOffset(document.scrollingElement); |
| |
| // Testing the vertical scrollbar thumb with touch. |
| let x = window.innerWidth - TRACK_WIDTH / 2; |
| let y = BUTTON_WIDTH + 10; |
| |
| let drag = { |
| start_x: x, |
| start_y: y, |
| end_x: x, |
| end_y: y + 100 |
| } |
| |
| await touchDragTo(drag); |
| |
| // The compositor thread ingests touch moves and we do not account for the |
| // slop region in ScrollbarController. The browser process conversely |
| // does subtract the slop region from the scrollbar thumb delta, therefore |
| // scrollY would be less by a value of slop region * scroller_to_scrollbar_ratio |
| assert_approx_equals(window.scrollY, 183, 28, "Touch dragging scrollbar did not scroll right amount"); |
| |
| // Since the horizontal scrolling is essentially the same codepath as vertical, |
| // this need not be tested in the interest of making the test run faster. |
| }, "Test touch drags on non-custom composited root scrollbar thumb."); |
| } |
| </script> |
| </body> |
