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Diffstat (limited to 'layout/style/test/file_transitions_replacement_on_busy_frame.html')
-rw-r--r-- | layout/style/test/file_transitions_replacement_on_busy_frame.html | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/layout/style/test/file_transitions_replacement_on_busy_frame.html b/layout/style/test/file_transitions_replacement_on_busy_frame.html new file mode 100644 index 000000000..c1678ab31 --- /dev/null +++ b/layout/style/test/file_transitions_replacement_on_busy_frame.html @@ -0,0 +1,93 @@ +<!doctype html> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=1167519 +--> +<head> + <meta charset=utf-8> + <script type="application/javascript" + src="/tests/SimpleTest/paint_listener.js"></script> + <style> + #target { + height: 100px; + width: 100px; + background: green; + transition: transform 100s linear; + } + </style> +</head> +<body> +<div id="target"></div> +<script> +'use strict'; + +var ok = opener.ok.bind(opener); +var isnot = opener.isnot.bind(opener); + +function finish() { + var o = opener; + self.close(); + o.SimpleTest.finish(); +} + +var OMTAPrefKey = "layers.offmainthreadcomposition.async-animations"; +var omtaEnabled = SpecialPowers.DOMWindowUtils.layerManagerRemote && + opener.SpecialPowers.getBoolPref(OMTAPrefKey); +window.addEventListener("load", function() { + if (!omtaEnabled) { + ok(true, "Skipping the test since OMTA is disabled"); + finish(); + return; + } + + var div = document.getElementById("target"); + // Start first transition + div.style.transform = "translateX(300px)"; + getComputedStyle(div); + + // Wait for a paint to ensure that the first transition has started. + waitForAllPaints(function() { + var previousPropertyValue; + var previousKeyframeValue; + var anim; + requestAnimationFrame(function() { + // Start second transition + div.style.transform = "translateX(0px)"; + getComputedStyle(div).transform; + + anim = div.getAnimations()[0]; + var properties = SpecialPowers.wrap(anim.effect).getProperties(); + previousPropertyValue = properties[0].values[0].value; + previousKeyframeValue = anim.effect.getKeyframes()[0].transform; + }); + + requestAnimationFrame(function() { + // Tie up main thread for 300ms. In the meantime, the first transition + // will continue running on the compositor. If we don't update the start + // point of the second transition, it will appear to jump when it starts. + var startTime = performance.now(); + while (performance.now() - startTime < 300); + + // Ensure that our paint process has been done. + // Note that requestAnimationFrame is not suitable here since on Android + // there is a case where the paint process has not completed even when the + // requestAnimationFrame callback is run (and it is during the paint + // process that we update the transition start point). + waitForAllPaints(function() { + var properties = SpecialPowers.wrap(anim.effect).getProperties(); + var currentPropertyValue = properties[0].values[0].value; + isnot(currentPropertyValue, previousPropertyValue, + "From value of transition is updated since the moment when " + + "it was generated"); + isnot(anim.effect.getKeyframes()[0].transform, previousKeyframeValue, + "Keyframe value of transition is updated since the moment when " + + "it was generated"); + finish(); + }); + }); + }); +}); + +</script> +</body> +</html> |