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223 lines
7.3 KiB
HTML
223 lines
7.3 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>Setting the current time of an animation</title>
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<link rel="help" href="https://drafts.csswg.org/web-animations-1/#setting-the-current-time-of-an-animation">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/web-animations/testcommon.js"></script>
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<style>
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.scroller {
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overflow: auto;
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height: 200px;
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width: 100px;
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}
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.contents {
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height: 1000px;
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width: 100%;
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}
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</style>
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<body>
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<div id="log"></div>
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<script>
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'use strict';
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function createScroller(test) {
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var scroller = createDiv(test);
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scroller.innerHTML = "<div class='contents'></div>";
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scroller.classList.add('scroller');
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return scroller;
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}
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function createScrollTimeline(test) {
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return new ScrollTimeline({
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scrollSource: createScroller(test),
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timeRange: 1000
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});
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}
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function createScrollLinkedAnimation(test, timeline) {
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if(timeline === undefined)
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timeline = createScrollTimeline(test);
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const DURATION = 1000; // ms
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const KEYFRAMES = { opacity: [1, 0] };
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return new Animation(
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new KeyframeEffect(createDiv(test), KEYFRAMES, DURATION), timeline);
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}
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promise_test(async t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.play();
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await animation.ready;
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assert_throws(new TypeError(), () => {
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animation.currentTime = null;
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});
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}, 'Setting animation current time to null throws TypeError.');
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test(t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.currentTime = 333;
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assert_times_equal(
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animation.currentTime,
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333,
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"Animation current time should be equal to the set value."
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);
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}, 'Set animation current time to a valid value without playing.');
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promise_test(async t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.play();
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await animation.ready;
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animation.currentTime = 333;
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assert_times_equal(
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animation.currentTime,
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333,
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"Animation current time should be equal to the set value."
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);
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}, 'Set animation current time to a valid value while playing.');
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promise_test(async t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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const range = animation.timeline.timeRange;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.play();
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await animation.ready;
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const largerThanDuration = animation.effect.getTiming().duration * 2;
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animation.currentTime = largerThanDuration;
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assert_greater_than_equal(largerThanDuration, range, "Make sure that the" +
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" test value is after the end of the effect and the timeline");
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assert_equals(animation.playState, "finished");
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assert_times_equal(
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animation.currentTime,
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largerThanDuration,
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"Animation current time should be equal to the set value."
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);
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}, 'Set animation current time to a value beyond effect end.');
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promise_test(async t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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const range = animation.timeline.timeRange;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.play();
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await animation.ready;
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animation.currentTime = -100;
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assert_equals(animation.playState, "running");
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assert_times_equal(
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animation.currentTime,
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-100,
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"Animation current time should be equal to the set value."
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);
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}, 'Set animation current time to a negative value.');
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test(t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.play();
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animation.currentTime = 300;
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assert_equals(animation.playState, "running");
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assert_true(animation.pending);
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assert_time_equals_literal(animation.currentTime, 300);
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}, "Setting current time while play pending overrides the current time");
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promise_test(async t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.play();
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await animation.ready;
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animation.currentTime = 333;
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assert_times_equal(
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animation.currentTime,
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333,
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"Animation current time should be equal to the set value."
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);
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// Cancel the animation and play it again, check that current time has reset
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// to scroll offset based current time.
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animation.cancel();
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animation.play();
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await animation.ready;
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assert_times_equal(
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animation.currentTime,
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animation.timeline.currentTime,
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"Animation current time should return to a value matching its" +
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" timeline current time after animation is cancelled and played again."
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);
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}, 'Setting animation.currentTime then restarting the animation should' +
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' reset the current time.');
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promise_test(async t => {
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const animation = createScrollLinkedAnimation(t);
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const scroller = animation.timeline.scrollSource;
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const maxScroll = scroller.scrollHeight - scroller.clientHeight;
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scroller.scrollTop = 0.25 * maxScroll;
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animation.play();
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await animation.ready;
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const originalCurrentTime = animation.currentTime;
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// Set the current time to something other than where the scroll offset.
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animation.currentTime = 500;
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// Setting current time is internally setting the start time to
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// scrollTimeline.currentTime - newAnimationCurrentTime.
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// Which results in current time of (timeline.currentTime - start_time).
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// This behavior puts the animation in a strange "out of sync" state between
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// the scroller and the animation effect, this is currently expected
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// behavior.
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const expectedStartTime = originalCurrentTime - animation.currentTime;
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assert_times_equal(
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animation.startTime,
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expectedStartTime,
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"Animation current time should be updated when setting the current time" +
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" to a time within the range of the animation.");
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scroller.scrollTop = 0.7 * maxScroll;
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assert_times_equal(
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animation.startTime,
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expectedStartTime,
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"Animation start time should remain unchanged when the scroller changes" +
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" position."
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);
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assert_times_equal(
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animation.currentTime,
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animation.timeline.currentTime - animation.startTime,
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"Animation current time should return to a value equal to" +
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" (timeline.currentTime - animation.startTime) after timeline scroll" +
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" source has been scrolled."
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);
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}, 'Set Animation current time then scroll.');
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</script>
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</body>
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