David Shin
03a51f9524
... Ensure that the minimum viewport scaling for `anchor-scroll-nested.html` as well as its reference file is set to 1, since having the viewport scaled breaks the reference's expecation of available scroll area. Differential Revision: https://phabricator.services.mozilla.com/D264101
92 lines
1.8 KiB
HTML
92 lines
1.8 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
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<title>Tests anchor positioning with nested scroll containers</title>
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<link rel="author" href="mailto:xiaochengh@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/css-anchor-1/">
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<link rel="match" href="reference/anchor-scroll-nested-ref.html">
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<style>
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body {
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margin: 0;
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width: 1500px;
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height: 1500px;
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position: relative;
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}
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#outer-scroller {
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margin: 500px;
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width: 350px;
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height: 350px;
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outline: 1px solid black;
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overflow: scroll;
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}
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#inner-scroller {
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margin: 100px;
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width: 250px;
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height: 250px;
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outline: 1px solid black;
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overflow: scroll;
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}
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#anchor {
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margin: 200px;
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width: 50px;
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height: 50px;
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background-color: green;
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anchor-name: --anchor;
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}
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.anchored {
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position: absolute;
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width: 50px;
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height: 50px;
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left: anchor(left);
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position-anchor: --anchor;
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}
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.above {
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bottom: anchor(top);
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background-color: red;
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}
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.below {
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top: anchor(bottom);
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background-color: yellow;
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}
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</style>
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<div id="outer-scroller">
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<div id="inner-scroller">
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<div id="anchor"></div>
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<div class="anchored above"></div>
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</div>
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</div>
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<div class="anchored below"></div>
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<script>
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function raf() {
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return new Promise(resolve => requestAnimationFrame(resolve));
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}
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async function runTest() {
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await raf();
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await raf();
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document.documentElement.scrollTop = 400;
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document.documentElement.scrollLeft = 400;
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let outerScroller = document.getElementById('outer-scroller');
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outerScroller.scrollTop = 50;
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outerScroller.scrollLeft = 50;
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let innerScroller = document.getElementById('inner-scroller');
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innerScroller.scrollTop = 100;
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innerScroller.scrollLeft = 100;
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document.documentElement.classList.remove('reftest-wait');
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}
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runTest();
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</script>
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