65 lines
2.5 KiB
HTML
65 lines
2.5 KiB
HTML
<!DOCTYPE html>
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<title>CSS Anchor Positioning: position-area positioning - alignment</title>
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<link rel="help" href="https://drafts.csswg.org/css-anchor-position/#position-area">
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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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/* A 300x300 container with a 100x100 centered anchor */
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#container {
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position: relative;
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width: 300px;
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height: 300px;
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}
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#anchor {
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position: absolute;
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top: 100px;
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left: 100px;
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width: 100px;
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height: 100px;
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anchor-name: --anchor;
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}
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#anchored {
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position: absolute;
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width: 10px;
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height: 10px;
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inset: 10px 15px 20px 25px;
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position-anchor: --anchor;
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}
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</style>
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<div id="container">
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<div id="anchor"></div>
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<div id="anchored"></div>
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</div>
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<script>
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function test_position_area(position_area, expected_offsets) {
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anchored.style.positionArea = position_area;
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test(() => {
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assert_equals(anchored.offsetLeft, expected_offsets.left, "Check expected offsetLeft");
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assert_equals(anchored.offsetTop, expected_offsets.top, "Check expected offsetTop");
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assert_equals(anchored.offsetWidth, expected_offsets.width, "Check expected offsetWidth");
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assert_equals(anchored.offsetHeight, expected_offsets.height, "Check expected offsetHeight");
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}, "Offsets for position-area: " + position_area);
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}
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// anchor-center in both directions
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test_position_area("span-all", {left:145, top:145, width:10, height:10});
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// Single region spans
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test_position_area("top left", {left:75, top:70, width:10, height:10});
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test_position_area("top center", {left:150, top:70, width:10, height:10});
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test_position_area("top right", {left:225, top:70, width:10, height:10});
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test_position_area("center left", {left:75, top:140, width:10, height:10});
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test_position_area("center center", {left:150, top:140, width:10, height:10});
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test_position_area("center right", {left:225, top:140, width:10, height:10});
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test_position_area("bottom left", {left:75, top:210, width:10, height:10});
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test_position_area("bottom center", {left:150, top:210, width:10, height:10});
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test_position_area("bottom right", {left:225, top:210, width:10, height:10});
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// Multi-region spans
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test_position_area("top span-left", {left:175, top:70, width:10, height:10});
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test_position_area("top span-right", {left:125, top:70, width:10, height:10});
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test_position_area("span-top left", {left:75, top:170, width:10, height:10});
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test_position_area("span-bottom left", {left:75, top:110, width:10, height:10});
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</script>
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