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/* vim: set ts=2 et sw=2 tw=80: */
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
// Check that if an animation has had its playbackRate changed via the DOM, then
// the timeline UI shows the right delay and duration.
// Indeed, the header in the timeline UI always shows the unaltered time,
// because there might be multiple animations displayed at the same time, some
// of which may have a different rate than others. Those that have had their
// rate changed have a delay = delay/rate and a duration = duration/rate.
add_task(function* () {
yield addTab(URL_ROOT + "doc_modify_playbackRate.html");
let {panel} = yield openAnimationInspector();
let timelineEl = panel.animationsTimelineComponent.rootWrapperEl;
let timeBlocks = timelineEl.querySelectorAll(".time-block");
is(timeBlocks.length, 2, "2 animations are displayed");
info("The first animation has its rate set to 1, let's measure it");
let el = timeBlocks[0];
let duration = getDuration(el.querySelector("path"));
let delay = parseInt(el.querySelector(".delay").style.width, 10);
info("The second animation has its rate set to 2, so should be shorter");
let el2 = timeBlocks[1];
let duration2 = getDuration(el2.querySelector("path"));
let delay2 = parseInt(el2.querySelector(".delay").style.width, 10);
// The width are calculated by the animation-inspector dynamically depending
// on the size of the panel, and therefore depends on the test machine/OS.
// Let's not try to be too precise here and compare numbers.
let durationDelta = (2 * duration2) - duration;
ok(durationDelta <= 1, "The duration width is correct");
let delayDelta = (2 * delay2) - delay;
ok(delayDelta <= 1, "The delay width is correct");
});
function getDuration(pathEl) {
const pathSegList = pathEl.pathSegList;
// Find the index of starting iterations.
let startingIterationIndex = 0;
const firstPathSeg = pathSegList.getItem(1);
for (let i = 2, n = pathSegList.numberOfItems - 2; i < n; i++) {
// Changing point of the progress acceleration is the time.
const pathSeg = pathSegList.getItem(i);
if (firstPathSeg.y != pathSeg.y) {
startingIterationIndex = i;
break;
}
}
// Find the index of ending iterations.
let endingIterationIndex = 0;
let previousPathSegment = pathSegList.getItem(startingIterationIndex);
for (let i = startingIterationIndex + 1, n = pathSegList.numberOfItems - 2;
i < n; i++) {
// Find forwards fill-mode.
const pathSeg = pathSegList.getItem(i);
if (previousPathSegment.y == pathSeg.y) {
endingIterationIndex = i;
break;
}
previousPathSegment = pathSeg;
}
if (endingIterationIndex) {
// Not forwards fill-mode
endingIterationIndex = pathSegList.numberOfItems - 2;
}
// Return the distance of starting and ending
const startingIterationPathSegment =
pathSegList.getItem(startingIterationIndex);
const endingIterationPathSegment =
pathSegList.getItem(startingIterationIndex);
return endingIterationPathSegment.x - startingIterationPathSegment.x;
}
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