| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#named-timeline-range"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <script src="support/testcommon.js"></script> |
| <script src="/web-animations/resources/keyframe-utils.js"></script> |
| <script src="/scroll-animations/scroll-timelines/testcommon.js"></script> |
| <title>Animation range updates play state</title> |
| </head> |
| <style type="text/css"> |
| @keyframes anim { |
| from { background-color: blue; } |
| to { background-color: white; } |
| } |
| #scroller { |
| border: 10px solid lightgray; |
| overflow-y: scroll; |
| overflow-x: hidden; |
| width: 300px; |
| height: 200px; |
| } |
| #target { |
| margin-top: 800px; |
| margin-bottom: 800px; |
| margin-left: 10px; |
| margin-right: 10px; |
| width: 100px; |
| height: 100px; |
| z-index: -1; |
| background-color: green; |
| animation: anim auto linear; |
| animation-timeline: --t1; |
| view-timeline: --t1; |
| } |
| </style> |
| <body> |
| <div id="scroller"> |
| <div id="target"></div> |
| </div> |
| </body> |
| <script type="text/javascript"> |
| async function runTest() { |
| promise_test(async t => { |
| const anim = target.getAnimations()[0]; |
| await anim.ready; |
| |
| let duration = anim.effect.getComputedTiming().duration; |
| assert_percents_equal(duration, CSS.percent(100), |
| 'Default duration is 100%'); |
| |
| // Start and end boundaries coincide. |
| anim.rangeStart = "entry 100%"; |
| anim.rangeEnd = "contain 0%"; |
| duration = anim.effect.getComputedTiming().duration; |
| assert_percents_equal(duration, CSS.percent(0), |
| "Duration is zero when boundaries coincide"); |
| |
| // Start > end, clamp at zero duration. |
| anim.rangeEnd = "entry 0%" |
| duration = anim.effect.getComputedTiming().duration; |
| assert_percents_equal(duration, CSS.percent(0), |
| "Duration is zero when start > end"); |
| |
| anim.rangeStart = "normal"; |
| anim.rangeEnd = "normal"; |
| duration = anim.effect.getComputedTiming().duration; |
| assert_percents_equal(duration, CSS.percent(100), |
| "Duration is 100% after range reset"); |
| |
| // Consumed 100% of timeline duration with delays |
| anim.effect.updateTiming({ |
| delay: CSS.percent(60), |
| endDelay: CSS.percent(40) |
| }); |
| duration = anim.effect.getComputedTiming().duration; |
| assert_percents_equal(duration, CSS.percent(0), |
| "Duration is 0% after delays sum to 100%"); |
| |
| // Delays sum to > 100% |
| anim.effect.updateTiming({ |
| delay: CSS.percent(60), |
| endDelay: CSS.percent(60) |
| }); |
| duration = anim.effect.getComputedTiming().duration; |
| assert_percents_equal(duration, CSS.percent(0), |
| "Duration is 0% after delays sum to > 100%"); |
| |
| anim.effect.updateTiming({ |
| delay: CSS.percent(40), |
| endDelay: CSS.percent(40) |
| }); |
| duration = anim.effect.getComputedTiming().duration; |
| assert_percents_equal( |
| duration, CSS.percent(20), |
| "Duration is 20% if normal range and delays sum to 80%"); |
| |
| }, 'Intrinsic iteration duration is non-negative'); |
| } |
| |
| |
| window.onload = runTest; |
| </script> |