74 lines
2.2 KiB
HTML
74 lines
2.2 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width; initial-scale=1.0">
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<title>Dragging the mouse on a transformed scrollframe inside a fixed-pos element</title>
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<script type="application/javascript" src="apz_test_native_event_utils.js"></script>
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<script type="application/javascript" src="apz_test_utils.js"></script>
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<script src="/tests/SimpleTest/paint_listener.js"></script>
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<script type="text/javascript">
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async function test() {
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var scrollableDiv = document.getElementById("scrollable");
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let scrollPromise = new Promise(resolve => {
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scrollableDiv.addEventListener("scroll", resolve, {once: true});
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});
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// Scroll down a small amount (10px). The bug in this case is that the
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// scrollthumb remains a little "above" where it's supposed to be, so if the
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// bug manifests here, then the thumb will remain at the top of the track
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// and the scroll position will remain at 0.
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var dragFinisher = await promiseVerticalScrollbarDrag(scrollableDiv, 10, 10);
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if (!dragFinisher) {
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ok(true, "No scrollbar, can't do this test");
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return;
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}
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// the events above might be stuck in APZ input queue for a bit until the
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// layer is activated, so we wait here until the scroll event listener is
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// triggered.
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await scrollPromise;
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await dragFinisher();
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// Flush everything just to be safe
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await promiseOnlyApzControllerFlushed();
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// In this case we just want to make sure the scroll position moved from 0
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// which indicates the thumb dragging worked properly.
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ok(scrollableDiv.scrollTop > 0, "Scrollbar drag resulted in a scroll position of " + scrollableDiv.scrollTop);
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}
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waitUntilApzStable()
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.then(test)
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.then(subtestDone, subtestFailed);
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</script>
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<style>
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#fixed {
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position: fixed;
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left: 0;
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top: 0;
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width: 300px;
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height: 100%;
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}
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#scrollable {
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transform: translateY(100px);
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overflow: scroll;
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height: 100%;
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}
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#content {
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height: 5000px;
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background-image: linear-gradient(red,blue);
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}
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</style>
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</head>
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<body>
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<div id="fixed">
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<div id="scrollable">
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<div id="content"></div>
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</div>
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</div>
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</body>
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</html>
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