77 lines
2.4 KiB
HTML
77 lines
2.4 KiB
HTML
<!DOCTYPE html>
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<title>IntersectionObserver observing an SVG <rect> with fractional bounds element</title>
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<meta name="viewport" content="width=device-width,initial-scale=1">
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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/intersection-observer-test-utils.js"></script>
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<svg id="container" width="1" height="1" viewBox="0 0 1000 1000" style="background: lightblue; position: absolute; top: 0; left: 0;">
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<rect id="target" x="0" y="-3" width="4" height="4" fill="green"></rect>
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</svg>
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<script>
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setup(() => {
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window.entries = [];
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window.target = document.getElementById("target");
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window.targetRect = target.getBoundingClientRect();
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});
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var epsilon = 0.0001;
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runTestCycle(function() {
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assert_true(!!target, "target exists");
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var observer = new IntersectionObserver(changes => {
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entries = entries.concat(changes);
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}, {root: container, threshold: [0, 0.25, 0.5, 0.7, 1]});
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observer.observe(target);
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entries = entries.concat(observer.takeRecords());
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assert_equals(entries.length, 0, "No initial notifications");
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runTestCycle(step0, "Initial Observation");
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});
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function step0() {
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target.setAttribute('y', -2);
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runTestCycle(step1, "Changing target y position to -2 (-0.002 in root coordinates)");
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checkLastEntry(entries, 0, [
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0, 0.004, -0.003, 0.001,
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0, 0.004, 0, 0.001,
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0, 1, 0, 1,
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true,
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], epsilon);
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}
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function step1() {
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target.setAttribute('y', -1);
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runTestCycle(step2, "Changing target y position to -1 (-0.001 in root coordinates)");
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checkLastEntry(entries, 1, [
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0, 0.004, -0.002, 0.002,
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0, 0.004, 0, 0.002,
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0, 1, 0, 1,
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true,
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], epsilon);
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}
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function step2() {
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target.setAttribute('y', -4);
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runTestCycle(step3, "Changing target y position to -4 (-0.004 in root coordinates)");
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checkLastEntry(entries, 2, [
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0, 0.004, -0.001, 0.003,
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0, 0.004, 0, 0.003,
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0, 1, 0, 1,
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true,
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], epsilon);
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}
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function step3() {
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target.setAttribute('y', 0);
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runTestCycle(step4, "Changing target y position to 0");
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checkLastEntry(entries, 3, [
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0, 0.004, -0.004, 0,
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0, 0.004, 0, 0,
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0, 1, 0, 1,
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true,
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], epsilon);
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}
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function step4() {
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checkLastEntry(entries, 4, [
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0, 0.004, 0, 0.004,
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0, 0.004, 0, 0.004,
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0, 1, 0, 1,
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true,
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], epsilon);
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}
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</script>
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