42 lines
1.4 KiB
HTML
42 lines
1.4 KiB
HTML
<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>Element Timing: image with scaling.</title>
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<head>
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<style>
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/* The margin of 50px allows the rect to be fully shown when the div is scaled. */
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body {
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margin: 50px;
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}
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.my_div {
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width: 100px;
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height: 50px;
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transform: scale(2);
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}
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</style>
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</head>
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<body>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="resources/element-timing-helpers.js"></script>
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<script>
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const beforeRender = performance.now();
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async_test(function (t) {
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assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented");
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const observer = new PerformanceObserver(
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t.step_func_done(function(entryList) {
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assert_equals(entryList.getEntries().length, 1);
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const entry = entryList.getEntries()[0];
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const pathname = window.location.origin + '/images/black-rectangle.png';
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checkElement(entry, pathname, 'rectangle', 'rect_id', beforeRender,
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document.getElementById('rect_id'));
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checkRect(entry, [0, 200, 25, 125]);
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checkNaturalSize(entry, 100, 50);
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})
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);
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observer.observe({entryTypes: ['element']});
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}, 'Image intersectionRect is affected by scaling, but not its intrinsic size.');
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</script>
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<div class="my_div" id='div_id'>
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<img src="/images/black-rectangle.png" elementtiming="rectangle" id='rect_id'/>
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</div>
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</body>
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