| <!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> |
| pre, #log { |
| position: absolute; |
| top: 0; |
| left: 200px; |
| } |
| #target { |
| display: inline-block; |
| width: 100px; |
| height: 100px; |
| background-color: green; |
| } |
| .vertical-spacer { |
| height: calc(100vh + 100px); |
| } |
| .horizontal-spacer { |
| display: inline-block; |
| width: 120vw; |
| } |
| </style> |
| |
| <div class="vertical-spacer"></div> |
| <div style="white-space:nowrap;"> |
| <div class="horizontal-spacer"></div> |
| <div id="target"></div> |
| <div class="horizontal-spacer"></div> |
| </div> |
| <div class="vertical-spacer"></div> |
| |
| <script> |
| var vw = document.documentElement.clientWidth; |
| var vh = document.documentElement.clientHeight; |
| |
| var entries = []; |
| var target; |
| |
| runTestCycle(function() { |
| target = document.getElementById("target"); |
| assert_true(!!target, "Target exists"); |
| var observer = new IntersectionObserver(function(changes) { |
| entries = entries.concat(changes) |
| }, { rootMargin: "10px 20% 40% 30px" }); |
| observer.observe(target); |
| entries = entries.concat(observer.takeRecords()); |
| assert_equals(entries.length, 0, "No initial notifications."); |
| runTestCycle(step0, "First rAF."); |
| }, "Root margin tests"); |
| |
| function step0() { |
| var targetBounds = clientBounds(target); |
| document.scrollingElement.scrollLeft = 100; |
| runTestCycle(step1, "document.scrollingElement.scrollLeft = 100"); |
| checkLastEntry(entries, 0, targetBounds.concat(0, 0, 0, 0, -30, vw * 1.2, -10, vh * 1.4, false)); |
| } |
| |
| function step1() { |
| var targetBounds = clientBounds(target); |
| var sw = window.innerWidth - document.documentElement.clientWidth; |
| var sh = window.innerHeight - document.documentElement.clientHeight; |
| document.scrollingElement.scrollTop = vh + 200; |
| runTestCycle(step2, "document.scrollingElement.scrollTop = document.documentElement.clientHeight + 200"); |
| checkLastEntry(entries, 1, targetBounds.concat( |
| targetBounds[0], Math.min(targetBounds[1], vw * 1.2), vh + 108 + sh, Math.min(vh + 208 + sw, vh * 1.4), |
| -30, vw * 1.2, -10, vh * 1.4, |
| true |
| )); |
| } |
| |
| function step2() { |
| document.scrollingElement.scrollTop = vh + 300; |
| runTestCycle(step3, "document.scrollingElement.scrollTop = document.documentElement.clientHeight + 300"); |
| checkLastEntry(entries, 1); |
| } |
| |
| function step3() { |
| var targetBounds = clientBounds(target); |
| document.scrollingElement.scrollLeft = 0; |
| document.scrollingElement.scrollTop = 0; |
| checkLastEntry(entries, 2, targetBounds.concat(0, 0, 0, 0, -30, vw * 1.2, -10, vh * 1.4, false)); |
| } |
| </script> |
