LayoutTests/compositing/will-change/containing-block-added.html - Issue 175263002: Implement will-change-based creation of layers, stacking contexts, and containing blocks

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Side by Side Diff: LayoutTests/compositing/will-change/containing-block-added.html

Issue 175263002: Implement will-change-based creation of layers, stacking contexts, and containing blocks (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Always create a stacking context for will-change:position Created 6 years, 10 months ago

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	1 <!DOCTYPE html>

	2 <html>

	3 <head>
	esprehn 2014/02/27 20:58:31 We often leave off the <html>, <head> and <body> e We often leave off the <html>, <head> and <body> elements since it makes the test simpler.
	4 <style>

	5 #container {

	6 will-change: top;

	7 position: absolute;

	8 left: 200px;

	9 top: 100px;

	10 width: 100px;

	11 height: 100px;

	12 background-color: blue;

	13 }

	14

	15 .fixed {

	16 position: fixed;

	17 left: 50px;

	18 top: 50px;

	19 width: 75px;

	20 height: 75px;

	21 background-color: green

	22 }

	23 </style>

	24 <script type="text/javascript">

	25 if (window.testRunner) {

	26 testRunner.waitUntilDone();

	27 }

	28

	29 function doTest()

	30 {

	31 if (window.internals) {

	32 window.internals.forceCompositingUpdate(document);

	33 }

	34 // Adding "will-change: -webkit-transform" to the container div should

	35 // make this div become the containing block for its fixed position

	36 // descendant.

	37 document.getElementById("container").style.willChange = "-webkit-transform ";

	38 if (window.testRunner) {

	39 testRunner.notifyDone();

	40 }

	41 }

	42

	43 window.addEventListener('load', doTest, false);

	44 </script>

	45 </head>

	46

	47 <body>

	48 <div id="container">

	49 <div class="fixed"></div>

	50 </div>

	51 </body>

	52

	53 </html>

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