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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /layout/style/test/test_restyles_in_smil_animation.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/style/test/test_restyles_in_smil_animation.html')
| -rw-r--r-- | layout/style/test/test_restyles_in_smil_animation.html | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/layout/style/test/test_restyles_in_smil_animation.html b/layout/style/test/test_restyles_in_smil_animation.html new file mode 100644 index 0000000000..1bfef49aa9 --- /dev/null +++ b/layout/style/test/test_restyles_in_smil_animation.html @@ -0,0 +1,145 @@ +<!doctype html> +<head> +<meta charset=utf-8> +<title>Tests restyles in smil animation</title> +<script src="/tests/SimpleTest/SimpleTest.js"></script> +<script src="/tests/SimpleTest/paint_listener.js"></script> +<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"> +</head> +<body> + +<div id="target-div"> + <svg> + <rect id="svg-rect" width="100%" height="100%" fill="lime"/> + </svg> +</div> + +<script> +"use strict"; + +// Waits for |frameCount| requestAnimationFrame callbacks. +// Returns the number of frame actually waited. +function waitForAnimationFrames(frameCount) { + return new Promise(function(resolve, reject) { + let previousTime = document.timeline.currentTime; + let framesWaited = 0; + function handleFrame() { + // SMIL uses a time resolution of 1ms but our software-based vsync timer + // sometimes produces ticks with an interval of less than 1ms. In such + // cases we will skip restyling for SMIL animations since the SMIL time + // will not change. + // + // In the following we attempt to detect such situations and wait an + // additional frame when we detect it. However, the detection is not + // completely accurate since it uses the timeline time which is based on + // the navigation start time whereas the SMIL start time is based on the + // refresh driver time. + // + // To account for this inaccuracy the Promise returned by this method + // resolves with the number of frames waited with the additional frames. + // This can be used by the call site to add a suitable tolerance to the + // number of restylings it expects to happen. For example, if a call site + // is anticipating each animation frame to cause restyling, then the + // number of restylings, x, it should expect is frameCount <= x <= + // framesWaited. + const difference = document.timeline.currentTime - previousTime; + framesWaited++; + if (difference >= 1.0 && --frameCount <= 0) { + resolve(framesWaited); + return; + } + + previousTime = document.timeline.currentTime; + window.requestAnimationFrame(handleFrame); // wait another frame + } + window.requestAnimationFrame(handleFrame); + }); +} + +// Returns an object consisting of observed styling count and the number of +// frames actually waited because we detected a possibly overflapping SMIL +// time. +function observeStyling(frameCount) { + var Ci = SpecialPowers.Ci; + var docShell = SpecialPowers.wrap(window).docShell; + + docShell.recordProfileTimelineMarkers = true; + docShell.popProfileTimelineMarkers(); + + return new Promise(function(resolve) { + return waitForAnimationFrames(frameCount).then(framesWaited => { + var markers = docShell.popProfileTimelineMarkers(); + docShell.recordProfileTimelineMarkers = false; + var stylingMarkers = Array.prototype.filter.call(markers, function(marker, index) { + return marker.name == 'Styles' && marker.isAnimationOnly; + }); + resolve({ + stylingCount: stylingMarkers.length, + framesWaited: framesWaited, + }); + }); + }); +} + +function ensureElementRemoval(aElement) { + return new Promise(function(resolve) { + aElement.remove(); + waitForAllPaintsFlushed(resolve); + }); +} + +function waitForPaintFlushed() { + return new Promise(function(resolve) { + waitForAllPaintsFlushed(resolve); + }); +} + +SimpleTest.waitForExplicitFinish(); + +add_task(async function smil_is_in_display_none_subtree() { + await waitForPaintFlushed(); + + var animate = + document.createElementNS("http://www.w3.org/2000/svg", "animate"); + animate.setAttribute("attributeType", "XML"); + animate.setAttribute("attributeName", "fill"); + animate.setAttribute("values", "red;lime"); + animate.setAttribute("dur", "1s"); + animate.setAttribute("repeatCount", "indefinite"); + document.getElementById("svg-rect").appendChild(animate); + + await waitForAnimationFrames(2); + + let result = await observeStyling(5); + // FIXME: Bug 866411: SMIL animations sometimes skip restyles when the target + // element is newly associated with an nsIFrame. + ok(result.stylingCount >= 4 && + result.stylingCount <= result.framesWaited, + `should restyle in most frames (got ${result.stylingCount} restyles ` + + `over ${result.framesWaited} frames, expected 4~${result.framesWaited})`); + + var div = document.getElementById("target-div"); + + div.style.display = "none"; + getComputedStyle(div).display; + await waitForPaintFlushed(); + + result = await observeStyling(5); + is(result.stylingCount, 0, "should never restyle if display:none"); + + div.style.display = ""; + getComputedStyle(div).display; + await waitForAnimationFrames(2); + + result = await observeStyling(5); + // FIXME: Bug 866411: SMIL animations sometimes skip restyles when the target + // element is newly associated with an nsIFrame. + ok(result.stylingCount >= 4 && + result.stylingCount <= result.framesWaited, + `should restyle again (got ${result.stylingCount} restyles over ` + + `${result.framesWaited} frames, expected 4~${result.framesWaited})`); + + await ensureElementRemoval(animate); +}); +</script> +</body> |