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Automatic update from web-platform-tests fix background-position-xy serialization for right/bottom offsets Make the implementations of CSSValueFromComputedStyle for background-position-x/y return correct values when three/four-value syntax is used with background-position. Since these properties only support single-value syntax, positions from the right or bottom will use calc() values if they result in mixed lengths and percentages when converted to be from the left/top. This is not the canonical form in the css-backgrounds-4 spec proposal, but does not require changes to the parser. Add a reftest (passes without patch) for three/four-value background-position syntax (there is currently only a manual test). Add another version of the reftest (fails without patch) which takes the above and attempts to write back the computed values of background-position-x/y. This is done in preparation to make transitions use normal keyframes which require round-trip serialization of all transition properties. Change-Id: I50e714746cc15fd0591bcd0a41cf9ecd56f55c44 Bug: 610627 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2121415 Reviewed-by: Robert Flack <flackr@chromium.org> Commit-Queue: George Steel <gtsteel@chromium.org> Cr-Commit-Position: refs/heads/master@{#755462} -- wpt-commits: e8d4020b565b63adfde507cb7ab112d76aeaf603 wpt-pr: 22509
41 lines
No EOL
1.1 KiB
HTML
41 lines
No EOL
1.1 KiB
HTML
<!DOCTYPE html>
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>CSS Test: 'Background-position' with three and four values</title>
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<link rel="help" href="http://www.w3.org/TR/css3-background/#background-position" />
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<meta name="assert" content="If three or four values are given to 'background-position', then each percentage or length value represents an offset from the edge specified by the preceeding keyword." />
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<link rel="match" href="reference/background-position-three-four-values-ref.html">
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<style type="text/css">
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div {
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width: 200px;
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height: 200px;
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border: 2px solid black;
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background-image: url("support/blue_color.png");
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background-repeat: no-repeat;
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display: inline-block;
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}
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.test1 {
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background-position: left 50px center;
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}
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.test2 {
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background-position: right 25px top 75%;
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}
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.test3 {
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background-position: left 25px bottom 75%;
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}
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.test4 {
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background-position: right 25px bottom 25%;
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}
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</style>
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</head>
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<body>
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<div class="test1"></div>
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<div class="test2"></div>
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<div class="test3"></div>
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<div class="test4"></div>
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</body>
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</html> |