| <!DOCTYPE html> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/intersection-observer-test-utils.js"></script> |
| |
| <style> |
| body, html { |
| margin: 0; |
| } |
| pre, #log { |
| position: absolute; |
| top: 0; |
| left: 200px; |
| } |
| #target { |
| width: 100px; |
| height: 100px; |
| background-color: green; |
| } |
| @keyframes rotate { |
| from { |
| transform: rotate(0deg); |
| } |
| to { |
| transform: rotate(45deg); |
| } |
| } |
| #occluder { |
| will-change: transform; |
| width: 100px; |
| height: 100px; |
| background-color: blue; |
| } |
| </style> |
| |
| <div id="target"></div> |
| <div id="occluder"></div> |
| |
| <script> |
| var vw = document.documentElement.clientWidth; |
| var vh = document.documentElement.clientHeight; |
| var delay = 100; |
| var entries = []; |
| var target; |
| var occluder; |
| |
| runTestCycle(function() { |
| target = document.getElementById("target"); |
| occluder = document.getElementById("occluder"); |
| assert_true(!!target, "target exists"); |
| assert_true(!!occluder, "occluder exists"); |
| var observer = new IntersectionObserver(function(changes) { |
| entries = entries.concat(changes) |
| }, {trackVisibility: true, delay: delay}); |
| observer.observe(target); |
| entries = entries.concat(observer.takeRecords()); |
| assert_equals(entries.length, 0, "No initial notifications."); |
| runTestCycle(step0, "First rAF.", delay); |
| }, "IntersectionObserverV2 in a single document using the implicit root, with an animated occluding element.", delay); |
| |
| function step0() { |
| occluder.style.animation = "rotate .1s linear"; |
| step_timeout(() => { |
| runTestCycle(step1, "occluder.style.animation = 'rotate .1s linear'", delay); |
| }, 50); |
| checkLastEntry(entries, 0, [0, 100, 0, 100, 0, 100, 0, 100, 0, vw, 0, vh, true, true]); |
| } |
| |
| function step1() { |
| checkLastEntry(entries, 1, [0, 100, 0, 100, 0, 100, 0, 100, 0, vw, 0, vh, true, false]); |
| } |
| </script> |
