| <!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> |
| <title>Animation range and delay</title> |
| </head> |
| <style type="text/css"> |
| @keyframes anim { |
| cover 0% { /* resolves to -100% */ |
| opacity: 0; |
| transform: none; |
| margin-left: 0px; |
| /* missing margin-right -- requires neutral keyframe at 0% */ |
| } |
| cover 100% { /* resolves to 200% */ |
| opacity: 1; |
| transform: translateX(300px); |
| margin-right: 0px; |
| /* missing margin-left -- requires neutral keyframe at 100% */ |
| } |
| } |
| #scroller { |
| border: 10px solid lightgray; |
| overflow-y: scroll; |
| overflow-x: hidden; |
| width: 300px; |
| height: 200px; |
| } |
| #target { |
| margin: 800px 10px; |
| width: 100px; |
| height: 100px; |
| z-index: -1; |
| background-color: green; |
| animation: anim auto both linear; |
| animation-timeline: --t1; |
| animation-range-start: contain 0%; |
| animation-range-end: contain 100%; |
| view-timeline: --t1 block; |
| } |
| </style> |
| <body> |
| <div id=scroller> |
| <div id=target></div> |
| </div> |
| </body> |
| <script type="text/javascript"> |
| async function runTest() { |
| |
| const epsilon = 1e-5; |
| |
| function assert_progress_equals(anim, expected, errorMessage) { |
| assert_approx_equals( |
| anim.effect.getComputedTiming().progress, |
| expected, epsilon, errorMessage); |
| } |
| |
| function assert_opacity_equals(expected, errorMessage) { |
| assert_approx_equals( |
| parseFloat(getComputedStyle(target).opacity), expected, epsilon, |
| errorMessage); |
| } |
| |
| function assert_translate_x_equals(expected, errorMessage) { |
| const style = getComputedStyle(target).transform; |
| const regex = /matrix\(([^\)]*)\)/; |
| const captureGroupIndex = 1; |
| const translateIndex = 4; |
| const match = style.match(regex)[captureGroupIndex]; |
| const translateX = parseFloat(match.split(',')[translateIndex].trim()); |
| assert_approx_equals(translateX, expected, epsilon, errorMessage); |
| } |
| |
| function assert_property_equals(property, expected, errorMessage) { |
| const value = parseFloat(getComputedStyle(target)[property]); |
| assert_approx_equals(value, expected, epsilon, errorMessage); |
| } |
| |
| promise_test(async t => { |
| await waitForNextFrame(); |
| const anims = document.getAnimations(); |
| assert_equals(anims.length, 1, |
| "Should have one animation attatched to the view-timeline"); |
| const anim = anims[0]; |
| await anim.ready; |
| await waitForNextFrame(); |
| |
| // @ contain 0% |
| scroller.scrollTop = 700; |
| await waitForNextFrame(); |
| assert_progress_equals(anim, 0, 'progress at contain 0%'); |
| assert_translate_x_equals(100, 'translation at contain 0%'); |
| assert_opacity_equals(1/3, 'opacity at contain 0%'); |
| assert_property_equals('margin-left', 5, 'margin-left at contain 0%'); |
| assert_property_equals('margin-right', 10, 'margin-right at contain 0%'); |
| |
| // @ contain 50% |
| scroller.scrollTop = 750; |
| await waitForNextFrame(); |
| assert_progress_equals(anim, 0.5, 'progress at contain 50%'); |
| assert_translate_x_equals(150, 'translation at contain 50%'); |
| assert_opacity_equals(0.5, 'opacity at contain 50%'); |
| assert_property_equals('margin-left', 7.5, 'margin-left at contain 50%'); |
| assert_property_equals('margin-right', 7.5, 'margin-right at contain 50%'); |
| |
| // @ contain 100% |
| scroller.scrollTop = 800; |
| await waitForNextFrame(); |
| assert_progress_equals(anim, 1, 'progress at contain 100%'); |
| assert_translate_x_equals(200, 'translation at contain 100%'); |
| assert_opacity_equals(2/3, 'opacity at contain 100%'); |
| assert_property_equals('margin-left', 10, 'margin-left at contain 100%'); |
| assert_property_equals('margin-right', 5, 'margin-right at contain 100%'); |
| }, 'ViewTimeline with timeline offset keyframes outside [0,1]'); |
| } |
| |
| window.onload = runTest; |
| </script> |
| </html> |
