LayoutTests/fast/layers/opacity-change-stacking-context.html - Issue 136903004: Changing from opacity less than 1 to opacity 1 should not trigger layout

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Side by Side Diff: LayoutTests/fast/layers/opacity-change-stacking-context.html

Issue 136903004: Changing from opacity less than 1 to opacity 1 should not trigger layout (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 6 years, 11 months ago

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	1 <!DOCTYPE html>

	2

	3 <script src="../../resources/js-test.js"></script>

	4

	5 <style>

	6 #target {

	7 top: 40px;

	8 width: 150px;

	9 height: 75px;

	10 background-color: yellow;

	11 -webkit-transform: translateZ(0);

	12 opacity: 0;

	13 }

	14 </style>

	15

	16 <div id="target"></div>

	17

	18 <script>

	19 description("Test that opacity changes from less than 1 to 1 don't cause layout if the layer remains a stacking context");

	20 var div = document.getElementById('target');

	21 div.offsetTop;

	22 div.style.opacity = 1;

	23 shouldBe("internals.updateStyleAndReturnAffectedElementCount()", "1");

	24 shouldBe("internals.needsLayoutCount()", "0");

	25 </script>

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