forked from mirrors/gecko-dev
f6eb41c0f0
Here are the ideas of the implementation. 1) When creating ScrollReflowInput, we compute and store the size of the scrollbar-gutter in `mScrollbarGutterSizes. 2) Provide a ScrollReflowInput::ScrollbarGutter() API that returns the space occupied by scrollbar gutters or scrollbars, and use it in ReflowScrolledFrame() and TryLayout(). ----- For test changes: - The existing scrollbar-gutter changes all assume classic scrollbars that can create scrollbar gutters, so they won't pass on Android which uses overlay scrollbars. - Add scrollbar-gutter-002.html to test when the scrollbar and gutter are both shown. The reference of this uses padding to simulate scrollbar-gutter, so it's OK if the platform uses overlay scrollbars. The next patch will add more variants. - scrollbar-gutter-dynamic-001.html was never run. Fixed it by adding `<link rel="match">`. Differential Revision: https://phabricator.services.mozilla.com/D132664
73 lines
2.4 KiB
HTML
73 lines
2.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<meta charset="utf-8">
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<title>CSS Overflow Reference: test scrollbar-gutter with horizontal left to right content</title>
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<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
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<link rel="author" title="Mozilla" href="http://www.mozilla.org/">
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<style>
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.line {
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display: flex;
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}
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.container {
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writing-mode: horizontal-tb;
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direction: ltr;
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box-sizing: border-box;
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block-size: 200px;
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inline-size: 200px;
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margin: 10px;
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background: deepskyblue;
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resize: both;
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}
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.content {
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inline-size: 100%;
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block-size: 200%;
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background: lightsalmon;
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}
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</style>
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<div class="line">
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<div class="container" style="overflow-y: auto">
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<div class="content"></div>
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</div>
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<div class="container" style="overflow-y: scroll" id="container_scroll_stable">
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<div class="content" id="content_scroll_stable"></div>
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</div>
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<div class="container" style="overflow-y: hidden" id="container_hidden_stable">
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<div class="content"></div>
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</div>
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</div>
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<div class="line">
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<div class="container" style="overflow-y: auto;" id="container_auto_stable_both_edges">
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<div class="content"></div>
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</div>
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<div class="container" style="overflow-y: scroll" id="container_scroll_stable_both_edges">
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<div class="content"></div>
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</div>
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<div class="container" style="overflow-y: hidden;" id="container_hidden_stable_both_edges">
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<div class="content"></div>
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</div>
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</div>
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<script>
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let container_scroll_stable = document.getElementById("container_scroll_stable");
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let content_scroll_stable = document.getElementById("content_scroll_stable");
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let vScrollbarWidth = (container_scroll_stable.offsetWidth - content_scroll_stable.offsetWidth);
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let vScrollbarWidthStr = vScrollbarWidth + "px";
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// Simulate scrollbar-gutter via padding on containers.
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document.getElementById("container_hidden_stable").style.paddingInlineEnd = vScrollbarWidthStr;
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document.getElementById("container_auto_stable_both_edges").style.paddingInlineStart = vScrollbarWidthStr;
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document.getElementById("container_scroll_stable_both_edges").style.paddingInlineStart = vScrollbarWidthStr;
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document.getElementById("container_hidden_stable_both_edges").style.paddingInlineStart = vScrollbarWidthStr;
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document.getElementById("container_hidden_stable_both_edges").style.paddingInlineEnd = vScrollbarWidthStr;
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</script>
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</html>
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