67 lines
2.4 KiB
HTML
67 lines
2.4 KiB
HTML
<!DOCTYPE html>
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<title>IntersectionObserver observing an SVG <rect> 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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<style>
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.spacer {
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height: calc(100vh + 100px);
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}
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</style>
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<div class="spacer"></div>
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<svg viewBox="0 0 200 100" width="400">
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<rect id="target" x="50" y="25" width="100" height="50" fill="blue"/>
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</svg>
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<div class="spacer"></div>
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<script>
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const viewportWidth = document.documentElement.clientWidth;
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const viewportHeight = document.documentElement.clientHeight;
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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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runTestCycle(function() {
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assert_true(!!target, "target exists");
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const observer = new IntersectionObserver(function(changes) {
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entries = entries.concat(changes);
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});
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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, "First rAF.");
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});
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function step0() {
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document.scrollingElement.scrollTop = 300;
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runTestCycle(step1, "document.scrollingElement.scrollTop = 300");
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// The numbers in brackets are target client rect; intersection rect;
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// and root bounds.
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checkLastEntry(entries, 0, [
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// the 8 pixels comes from the html body padding.
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100 + 8, 100 + 8 + targetRect.width, viewportHeight + 150 + 8, viewportHeight + 150 + 8 + targetRect.height,
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0, 0, 0, 0,
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0, viewportWidth, 0, viewportHeight,
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false,
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]);
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}
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function step1() {
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document.scrollingElement.scrollTop = 100;
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runTestCycle(step2, "document.scrollingElement.scrollTop = 100");
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checkLastEntry(entries, 1, [
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100 + 8, 100 + 8 + targetRect.width, viewportHeight - 150 + 8, viewportHeight - 150 + 8 + targetRect.height,
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100 + 8, 100 + 8 + targetRect.width, viewportHeight - 150 + 8, viewportHeight - 150 + 8 + targetRect.height,
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0, viewportWidth, 0, viewportHeight,
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true,
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]);
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}
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function step2() {
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document.scrollingElement.scrollTop = 0;
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checkLastEntry(entries, 2, [
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100 + 8, 100 + 8 + targetRect.width, viewportHeight + 50 + 8, viewportHeight + 50 + 8 + targetRect.height,
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0, 0, 0, 0,
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0, viewportWidth, 0, viewportHeight,
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false,
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]);
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}
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</script>
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