123 lines
5.8 KiB
HTML
123 lines
5.8 KiB
HTML
<!DOCTYPE html>
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<title>CSS Anchor Positioning: basic position-area positioning</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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<!-- The grid:
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100 150 150
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+--------+--------+--------+
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150 | | | |
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+--------+--------+--------+
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75 | | | |
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+--------+--------+--------+
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175 | | | |
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+--------+--------+--------+
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-->
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<style>
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#container {
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position: absolute;
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width: 400px;
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height: 400px;
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margin: 0 auto;
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border: 2px solid;
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background: #eee;
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}
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#anchored {
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position: absolute;
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align-self: stretch;
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justify-self: stretch;
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position-anchor: --anchor;
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background: #FA08;
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outline: 1px solid orange;
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}
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#anchor {
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margin-top: 150px;
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margin-left: 100px;
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width: 150px;
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height: 75px;
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anchor-name: --anchor;
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background: blue;
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}
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</style>
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<div id="container">
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<div id="anchored"></div>
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<div id="anchor"></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);
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}
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test_position_area("none", {left:0, top:0, width:0, height:0});
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test_position_area("span-all", {left:0, top:0, width:400, height:400});
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test_position_area("span-all span-all", {left:0, top:0, width:400, height:400});
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// Single region spans
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test_position_area("top left", {left:0, top:0, width:100, height:150});
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test_position_area("top center", {left:100, top:0, width:150, height:150});
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test_position_area("top right", {left:250, top:0, width:150, height:150});
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test_position_area("center left", {left:0, top:150, width:100, height:75});
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test_position_area("center center", {left:100, top:150, width:150, height:75});
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test_position_area("center right", {left:250, top:150, width:150, height:75});
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test_position_area("bottom left", {left:0, top:225, width:100, height:175});
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test_position_area("bottom center", {left:100, top:225, width:150, height:175});
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test_position_area("bottom right", {left:250, top:225, width:150, height:175});
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test_position_area("start start", {left:0, top:0, width:100, height:150});
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test_position_area("start center", {left:100, top:0, width:150, height:150});
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test_position_area("start end", {left:250, top:0, width:150, height:150});
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test_position_area("center start", {left:0, top:150, width:100, height:75});
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test_position_area("center end", {left:250, top:150, width:150, height:75});
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test_position_area("end start", {left:0, top:225, width:100, height:175});
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test_position_area("end center", {left:100, top:225, width:150, height:175});
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test_position_area("end end", {left:250, top:225, width:150, height:175});
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test_position_area("self-start self-start", {left:0, top:0, width:100, height:150});
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test_position_area("self-start center", {left:100, top:0, width:150, height:150});
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test_position_area("self-start self-end", {left:250, top:0, width:150, height:150});
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test_position_area("center self-start", {left:0, top:150, width:100, height:75});
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test_position_area("center self-end", {left:250, top:150, width:150, height:75});
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test_position_area("self-end self-start", {left:0, top:225, width:100, height:175});
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test_position_area("self-end center", {left:100, top:225, width:150, height:175});
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test_position_area("self-end self-end", {left:250, top:225, width:150, height:175});
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test_position_area("y-start x-start", {left:0, top:0, width:100, height:150});
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test_position_area("y-start center", {left:100, top:0, width:150, height:150});
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test_position_area("y-start x-end", {left:250, top:0, width:150, height:150});
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test_position_area("center x-start", {left:0, top:150, width:100, height:75});
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test_position_area("center x-end", {left:250, top:150, width:150, height:75});
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test_position_area("y-end x-start", {left:0, top:225, width:100, height:175});
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test_position_area("y-end center", {left:100, top:225, width:150, height:175});
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test_position_area("y-end x-end", {left:250, top:225, width:150, height:175});
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test_position_area("y-self-start x-self-start", {left:0, top:0, width:100, height:150});
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test_position_area("y-self-start center", {left:100, top:0, width:150, height:150});
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test_position_area("y-self-start x-self-end", {left:250, top:0, width:150, height:150});
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test_position_area("center x-self-start", {left:0, top:150, width:100, height:75});
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test_position_area("center x-self-end", {left:250, top:150, width:150, height:75});
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test_position_area("y-self-end x-self-start", {left:0, top:225, width:100, height:175});
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test_position_area("y-self-end center", {left:100, top:225, width:150, height:175});
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test_position_area("y-self-end x-self-end", {left:250, top:225, width:150, height:175});
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// Multi-region spans
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test_position_area("span-y-self-start span-x-self-end", {left:100, top:0, width:300, height:225});
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test_position_area("span-bottom span-all", {left:0, top:150, width:400, height:250});
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// No implicit anchor means the position-area should not apply.
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anchored.style.positionAnchor = "auto";
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test_position_area("span-all top", {left:0, top:0, width:0, height:0});
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</script>
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