| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>The current time of an animation</title> |
| <link rel="help" href="https://drafts.csswg.org/web-animations/#the-current-time-of-an-animation"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../../testcommon.js"></script> |
| <script src="../../resources/timing-override.js"></script> |
| <body> |
| <div id="log"></div> |
| <script> |
| 'use strict'; |
| |
| test(t => { |
| const animation = |
| new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC), |
| document.timeline); |
| |
| animation.play(); |
| assert_equals(animation.currentTime, 0, |
| 'Current time returns the hold time set when entering the play-pending ' + |
| 'state'); |
| }, 'The current time returns the hold time when set'); |
| |
| promise_test(async t => { |
| const animation = |
| new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC), |
| null); |
| |
| await animation.ready; |
| assert_equals(animation.currentTime, null); |
| }, 'The current time is unresolved when there is no associated timeline ' + |
| '(and no hold time is set)'); |
| |
| // FIXME: Test that the current time is unresolved when we have an inactive |
| // timeline if we find a way of creating an inactive timeline! |
| |
| test(t => { |
| const animation = |
| new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC), |
| document.timeline); |
| |
| animation.startTime = null; |
| assert_equals(animation.currentTime, null); |
| }, 'The current time is unresolved when the start time is unresolved ' + |
| '(and no hold time is set)'); |
| |
| test(t => { |
| const animation = |
| new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC), |
| document.timeline); |
| |
| animation.playbackRate = 2; |
| animation.startTime = document.timeline.currentTime - 25 * MS_PER_SEC; |
| |
| const timelineTime = document.timeline.currentTime; |
| const startTime = animation.startTime; |
| const playbackRate = animation.playbackRate; |
| assert_times_equal(animation.currentTime, |
| (timelineTime - startTime) * playbackRate, |
| 'Animation has a unresolved start time'); |
| }, 'The current time is calculated from the timeline time, start time and ' + |
| 'playback rate'); |
| |
| promise_test(async t => { |
| const animation = createDiv(t).animate(null, 100 * MS_PER_SEC); |
| animation.playbackRate = 0; |
| |
| await animation.ready; |
| await waitForAnimationFrames(1); |
| assert_time_equals_literal(animation.currentTime, 0); |
| }, 'The current time does not progress if playback rate is 0'); |
| |
| </script> |
| </body> |
