53 lines
1.9 KiB
HTML
53 lines
1.9 KiB
HTML
<!DOCTYPE html>
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<title>CSS Anchor Positioning: try-tactic (margin)</title>
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<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#typedef-position-try-fallbacks-try-tactic">
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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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@position-try --pf {
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left:10px;
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top:20px;
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margin: 5px 15px 25px 35px;
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}
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#cb {
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position: absolute;
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width: 400px;
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height: 400px;
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border: 1px solid black;
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}
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#target {
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position: absolute;
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left: 99999px; /* force fallback */
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width: 30px;
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height: 40px;
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background-color: skyblue;
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}
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</style>
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<div id=cb>
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<div id=target></div>
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</div>
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<script>
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function test_try_tactic(try_tactic, expected_offsets) {
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target.style.positionTryFallbacks = `--pf ${try_tactic}`;
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test(() => {
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assert_equals(target.offsetLeft, expected_offsets.left, 'offsetLeft');
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assert_equals(target.offsetTop, expected_offsets.top, 'offsetTop');
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assert_equals(target.offsetWidth, expected_offsets.width, 'offsetWidth');
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assert_equals(target.offsetHeight, expected_offsets.height, 'offsetHeight');
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}, target.style.positionTryFallbacks);
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}
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let w = 30;
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let h = 40;
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let cbw = 400;
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let cbh = 400;
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test_try_tactic('', {left:10+35, top:20+5, width:w, height:h});
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test_try_tactic('flip-block', {left:10+35, top:cbh-h-20-5, width:w, height:h});
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test_try_tactic('flip-inline', {left:cbw-w-10-35, top:20+5, width:w, height:h});
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test_try_tactic('flip-block flip-inline', {left:cbw-w-10-35, top:cbh-h-20-5, width:w, height:h});
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test_try_tactic('flip-start', {left:20+5, top:10+35, width:h, height:w});
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test_try_tactic('flip-block flip-start', {left:cbh-h-20-5, top:10+35, width:h, height:w});
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test_try_tactic('flip-inline flip-start', {left:20+5, top:cbw-w-10-35, width:h, height:w});
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test_try_tactic('flip-block flip-inline flip-start', {left:cbh-h-20-5, top:cbw-w-10-35, width:h, height:w});
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</script>
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