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