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Diffstat (limited to 'gfx/layers/apz/test/mochitest/helper_position_fixed_scroll_handoff-2.html')
-rw-r--r-- | gfx/layers/apz/test/mochitest/helper_position_fixed_scroll_handoff-2.html | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/gfx/layers/apz/test/mochitest/helper_position_fixed_scroll_handoff-2.html b/gfx/layers/apz/test/mochitest/helper_position_fixed_scroll_handoff-2.html new file mode 100644 index 0000000000..29b11072ca --- /dev/null +++ b/gfx/layers/apz/test/mochitest/helper_position_fixed_scroll_handoff-2.html @@ -0,0 +1,65 @@ +<!DOCTYPE HTML> +<head> + <title>APZ overscroll handoff for fixed elements</title> + <script type="application/javascript" src="apz_test_utils.js"></script> + <script type="application/javascript" src="apz_test_native_event_utils.js"></script> + <script src="/tests/SimpleTest/paint_listener.js"></script> + <meta name="viewport" content="width=device-width"/> +<style> +html, body { + margin: 0; +} +html { + overflow: auto; + background: blue; +} +.spacer { + height: 2000px; +} +#fixed { + position: fixed; + overflow: auto; + background: red; + width: 200px; + height: 200px; + top: 0; + left: 0; +} +</style> +</head> +<div id="fixed"> + <div class="spacer"></div> +</div> +<div class="spacer"></div> +<script type="application/javascript"> + +async function test() { + // Scroll to the bottom of the fixed position element that should + // allow overscroll handoff. + fixed.scrollTop = fixed.scrollHeight; + + // After scrolling to bottom tick the refresh driver. + await promiseFrame(); + + info("Start: fixed=" + fixed.scrollTop + " window=" + window.scrollY); + + // Async scroll the fixed element by 200 pixels using the mouse-wheel. + // This should handoff the overscroll to the window. + await promiseMoveMouseAndScrollWheelOver(fixed, 50, 50, false, 200); + + // Make sure scrolling that has happened is propagated to the main thread. + await promiseApzFlushedRepaints(); + + // Try another gesture to ensure the overscroll handoff runs. + await promiseMoveMouseAndScrollWheelOver(fixed, 50, 50, false, 200); + await promiseApzFlushedRepaints(); + + // Ensure that the window has scrolled. + isnot(window.scrollY, 0, "The overscroll should not handoff"); +} + +waitUntilApzStable() +.then(test) +.then(subtestDone, subtestFailed); + +</script> |