60 lines
2.5 KiB
HTML
60 lines
2.5 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
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<link rel="author" title="Mozilla" href="https://mozilla.org">
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<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollwidth">
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<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollheight">
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1936156">
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<title>scroll{Width,Height} shouldn't account for collapsed margins, in order not to report unnecessary overflow</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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#target {
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width: 20px;
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flex-direction: column;
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}
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#target > div {
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background-color: green;
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margin: -5px -7px;
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}
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#target > div > div {
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height: 20px;
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width: 20px;
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}
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</style>
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<div id="target">
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<div><div></div></div>
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<div><div></div></div>
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<div><div></div></div>
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<div><div></div></div>
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</div>
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<script>
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let target = document.getElementById("target");
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// "clip" is not really scrollable, but should match as well.
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for (let overflow of ["visible", "hidden", "auto", "scroll", "clip"]) {
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// First one creates no overflow, last one does create overflow.
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// TODO(emilio): Figure out why the overflow padding and some of the grid cases
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// are not interoperable across platforms / engines. Maybe scrollbar-width dependent?
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for (let padding of ["10px 20px" /* , "2px" */]) {
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for (let border of ["0", "3px solid"]) {
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for (let display of ["flex", "block", "flow-root", "inline-block", "inline-flex", /* "grid", "inline-grid" */]) {
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test(function() {
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let [expectedOverflowY, expectedOverflowX] = padding == "10px 20px" ? [0, 0] : [3, 5];
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target.style.overflow = overflow;
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target.style.display = display;
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target.style.border = border;
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target.style.padding = padding;
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let sh = target.scrollHeight;
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let sw = target.scrollWidth;
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let ch = target.clientHeight;
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let cw = target.clientWidth;
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assert_equals(sh, ch + expectedOverflowY, `scrollHeight expecting ${expectedOverflowY}px of overflow`);
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assert_equals(sw, cw + expectedOverflowX, `scrollWidth expecting ${expectedOverflowX}px of overflow`);
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}, `scroll{Width,Height} with negative margins with overflow: ${overflow}, padding: ${padding}, border: ${border}, display: ${display}`);
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}
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}
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}
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}
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</script>
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