36 lines
995 B
HTML
36 lines
995 B
HTML
<!DOCTYPE html>
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<title>Hit-test of clip-path polygon combined with box-shadow</title>
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<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
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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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body {
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margin: 0;
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}
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.box {
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width: 100px;
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height: 100px;
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background-color: blue;
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box-shadow: -100px 0px red;
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clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
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}
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</style>
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<div class="box"></div>
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<script>
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function assert_element_at(element, pointlist) {
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for (let point of pointlist) {
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let result = document.elementFromPoint(point[0], point[1]);
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assert_equals(result, element, point.join(','));
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}
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}
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test(function() {
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let div = document.querySelector('.box');
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// Points inside clip-path.
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assert_element_at(div, [[50, 50], [50, 25], [50, 75], [25, 50], [75, 50]]);
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// Points outside clip-path.
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assert_element_at(document.body, [[20, 20], [80, 20], [20, 80], [80, 80]]);
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});
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</script>
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