101 lines
4.2 KiB
HTML
101 lines
4.2 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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<title>scroll{Width,Height} with visible overflow and negative margins.</title>
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<link rel="help" href="https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface">
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1906475">
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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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<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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body { margin: 0 }
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.wrapper {
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width: 80px;
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height: 80px;
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border: 1px solid #d1d1d2;
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padding: 1px 4px 8px 16px;
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border-width: 1px 2px 3px 4px;
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border-right-width: 50px;
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border-bottom-width: 40px;
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}
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.inner {
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margin: -100px;
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height: 300px;
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width: 300px;
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background-color: blue;
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}
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</style>
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<div class="wrapper">
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<div class="inner"></div>
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</div>
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<script>
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const wrapper = document.querySelector(".wrapper");
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const contentBox = {
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width: 80,
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height: 80,
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};
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const paddingBox = {
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width: contentBox.width + 4 + 16,
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height: contentBox.height + 1 + 8,
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};
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for (let display of ["flow-root", "flex", "grid"]) {
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for (let flexDirection of ["row", "row-reverse", "column", "column-reverse"]) {
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if (flexDirection != "row" && display != "flex") {
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// Don't bother retesting with all flexDirection values unless we're actually a flex container
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continue;
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}
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for (let flexWrap of ["", "wrap-reverse"]) {
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if (flexWrap != "" && display != "flex") {
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// Don't bother retesting with all flexWrap values unless we're actually a flex container
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continue;
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}
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for (let direction of ["ltr", "rtl"]) {
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for (let writingMode of ["horizontal-tb", "vertical-lr", "vertical-rl"]) {
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for (let overflow of ["visible", "hidden", "auto", "clip", "scroll"]) {
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wrapper.style.display = display;
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wrapper.style.overflow = overflow;
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wrapper.style.direction = direction;
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wrapper.style.writingMode = writingMode;
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wrapper.style.flexDirection = flexDirection;
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wrapper.style.flexWrap = flexWrap;
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// Suppress scrollbars because they get added to the padding are
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// and would need to account for them in flexbox.
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wrapper.style.scrollbarWidth = display == "flex" ? "none" : "";
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let vertical = writingMode.startsWith("vertical");
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let scrollToTop = vertical && direction == "rtl";
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let scrollToLeft = (!vertical && direction == "rtl") || writingMode == "vertical-rl";
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let flexMainAxisIsVertical = flexDirection.startsWith("row") == vertical;
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if (display == "flex") {
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if (flexDirection.endsWith("-reverse")) {
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if (flexMainAxisIsVertical) {
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scrollToTop = !scrollToTop;
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} else {
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scrollToLeft = !scrollToLeft;
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}
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}
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if (flexWrap == "wrap-reverse") {
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if (flexMainAxisIsVertical) {
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scrollToLeft = !scrollToLeft;
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} else {
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scrollToTop = !scrollToTop;
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}
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}
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}
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test(function() {
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assert_greater_than_equal(wrapper.scrollWidth, paddingBox.width, "scrollWidth should be at least padding box width");
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let padding = display == "flex" && !flexMainAxisIsVertical ? paddingBox.width - contentBox.width : 0;
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assert_equals(wrapper.scrollWidth, (scrollToLeft ? 204 : 216) - padding, "scrollWidth");
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}, "scrollWidth with negative margins: " + wrapper.style.cssText);
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test(function() {
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assert_greater_than_equal(wrapper.scrollHeight, paddingBox.height, "scrollHeight should be at least padding box height");
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let padding = display == "flex" && flexMainAxisIsVertical ? paddingBox.width - contentBox.width : 0;
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assert_equals(wrapper.scrollHeight, (scrollToTop ? 208 : 201) - padding, "scrollHeight");
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}, "scrollHeight with negative margins: " + wrapper.style.cssText);
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}
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}
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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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