87 lines
2.6 KiB
HTML
87 lines
2.6 KiB
HTML
<!DOCTYPE html>
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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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pre, #log {
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position: absolute;
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top: 0;
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left: 200px;
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}
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#target {
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display: inline-block;
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width: 100px;
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height: 100px;
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background-color: green;
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}
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.vertical-spacer {
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height: calc(100vh + 100px);
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}
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.horizontal-spacer {
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display: inline-block;
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width: 120vw;
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}
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</style>
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<div class="vertical-spacer"></div>
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<div style="white-space:nowrap;">
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<div class="horizontal-spacer"></div>
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<div id="target"></div>
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<div class="horizontal-spacer"></div>
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</div>
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<div class="vertical-spacer"></div>
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<script>
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var vw = document.documentElement.clientWidth;
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var vh = document.documentElement.clientHeight;
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var entries = [];
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var target;
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runTestCycle(function() {
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target = document.getElementById("target");
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assert_true(!!target, "Target exists");
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var observer = new IntersectionObserver(function(changes) {
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entries = entries.concat(changes)
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}, { rootMargin: "10px 20% 40% 30px" });
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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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}, "Root margin tests");
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function step0() {
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var targetBounds = clientBounds(target);
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document.scrollingElement.scrollLeft = 100;
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runTestCycle(step1, "document.scrollingElement.scrollLeft = 100");
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checkLastEntry(entries, 0, targetBounds.concat(0, 0, 0, 0, -30, vw * 1.2, -10, vh * 1.4, false));
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}
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function step1() {
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var targetBounds = clientBounds(target);
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var sw = window.innerWidth - document.documentElement.clientWidth;
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var sh = window.innerHeight - document.documentElement.clientHeight;
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document.scrollingElement.scrollTop = vh + 200;
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runTestCycle(step2, "document.scrollingElement.scrollTop = document.documentElement.clientHeight + 200");
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checkLastEntry(entries, 1, targetBounds.concat(
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targetBounds[0], Math.min(targetBounds[1], vw * 1.2), vh + 108 + sh, Math.min(vh + 208 + sw, vh * 1.4),
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-30, vw * 1.2, -10, vh * 1.4,
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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 = vh + 300;
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runTestCycle(step3, "document.scrollingElement.scrollTop = document.documentElement.clientHeight + 300");
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checkLastEntry(entries, 1);
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}
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function step3() {
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var targetBounds = clientBounds(target);
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document.scrollingElement.scrollLeft = 0;
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document.scrollingElement.scrollTop = 0;
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checkLastEntry(entries, 2, targetBounds.concat(0, 0, 0, 0, -30, vw * 1.2, -10, vh * 1.4, false));
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}
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</script>
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