зеркало из https://github.com/mozilla/gecko-dev.git
68 строки
1.3 KiB
HTML
68 строки
1.3 KiB
HTML
<!DOCTYPE html>
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<html lang="en" class="reftest-wait">
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<meta charset="utf-8">
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<title>Starting to scroll the nested scrollbox shouldn't invalidate the fixed layer</title>
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<style>
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.content {
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box-sizing: border-box;
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width: 200px;
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height: 200px;
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border: 1px solid black;
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}
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.fixed {
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position: fixed;
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top: 20px;
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left: 240px;
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}
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.reftest-no-paint {
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border-color: lime;
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}
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.scrollable {
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overflow: auto;
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padding: 10px;
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}
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.scrolled {
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border: 1px solid gray;
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height: 400px;
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}
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body {
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margin: 0;
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padding: 20px;
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height: 3000px;
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}
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</style>
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<div class="scrollable content" id="aboutToScroll">
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<!--
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This scrollbox starts out without active scrolling and is going to become
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actively scrolled.
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-->
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<div class="scrolled"></div>
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</div>
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<div class="fixed reftest-no-paint content">
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<!--
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This fixed layer gets its own PaintedLayer above the rest.
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When the contents of .scrollable require their own PaintedLayer, that
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should not cause .fixed to change layers.
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-->
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</div>
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<script>
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function doTest() {
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document.querySelector("#aboutToScroll").scrollTop = 50 - document.querySelector("#aboutToScroll").scrollTop;
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document.documentElement.removeAttribute("class");
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}
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document.addEventListener("MozReftestInvalidate", doTest, false);
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</script>
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