LayoutTests/compositing/overflow/automatically-opt-into-composited-scrolling.html - Issue 16509007: Cleanup constants for layerTreeAsText.

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Issue 16509007: Cleanup constants for layerTreeAsText. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: naming Created 7 years, 6 months ago

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1 <!DOCTYPE html>	1 <!DOCTYPE html>

2	2

3 <html>	3 <html>

4 <head>	4 <head>

5 <style>	5 <style>

6 .container {	6 .container {

7 width: 200px;	7 width: 200px;

8 height: 200px;	8 height: 200px;

9 overflow: scroll;	9 overflow: scroll;

10 margin: 20px;	10 margin: 20px;

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77 // not to opt in to get our first stacking order list. To do this, we need	77 // not to opt in to get our first stacking order list. To do this, we need

78 // to disable compositing for overflow scroll entirely.	78 // to disable compositing for overflow scroll entirely.

79 //	79 //

80 // Unfortunately this operation won't dirty any style bits, and we will	80 // Unfortunately this operation won't dirty any style bits, and we will

81 // need to perform a full style recalc both here and below when we force	81 // need to perform a full style recalc both here and below when we force

82 // to promote, so that we reevaluate whether or not container can be	82 // to promote, so that we reevaluate whether or not container can be

83 // composited. To ensure that we perform the full style recalc, we need to	83 // composited. To ensure that we perform the full style recalc, we need to

84 // change a style property so the style is dirty, and force the style to	84 // change a style property so the style is dirty, and force the style to

85 // be cleaned with document.body.offsetTop (inside getStackingOrder()).	85 // be cleaned with document.body.offsetTop (inside getStackingOrder()).

86 window.internals.setNeedsCompositedScrolling(container,	86 window.internals.setNeedsCompositedScrolling(container,

87 window.internals.CompositedScrollingAlwaysOff);	87 window.internals.COMPOSITED_SCROLLING_ALWAYS_OFF);

88 container.style.webkitTransform = '';	88 container.style.webkitTransform = '';

89	89

90 var oldStackingOrder = getStackingOrder(container);	90 var oldStackingOrder = getStackingOrder(container);

91	91

92 window.internals.setNeedsCompositedScrolling(container,	92 window.internals.setNeedsCompositedScrolling(container,

93 window.internals.CompositedScrollingAlwaysOn);	93 window.internals.COMPOSITED_SCROLLING_ALWAYS_ON);

94 container.style.webkitTransform = 'translateZ(0px)';	94 container.style.webkitTransform = 'translateZ(0px)';

95	95

96 var newStackingOrder = getStackingOrder(container);	96 var newStackingOrder = getStackingOrder(container);

97	97

98 window.internals.setNeedsCompositedScrolling(container,	98 window.internals.setNeedsCompositedScrolling(container,

99 window.internals.settings.DoNotForceCompositedScrolling);	99 window.internals.settings.DO_NOT_FORCE_COMPOSITED_SCROLLING);

100	100

101 var shouldOptIn = oldStackingOrder.length === newStackingOrder.length;	101 var shouldOptIn = oldStackingOrder.length === newStackingOrder.length;

102 for (var i = 0; i < oldStackingOrder.length; ++i) {	102 for (var i = 0; i < oldStackingOrder.length; ++i) {

103 if (oldStackingOrder[i] !== newStackingOrder[i]) {	103 if (oldStackingOrder[i] !== newStackingOrder[i]) {

104 shouldOptIn = false;	104 shouldOptIn = false;

105 break;	105 break;

106 }	106 }

107 }	107 }

108	108

109 container.style.webkitTransform = '';	109 container.style.webkitTransform = '';

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136 permute(testPermutation);	136 permute(testPermutation);

137 }	137 }

138	138

139 window.addEventListener('load', doTest, false);	139 window.addEventListener('load', doTest, false);

140 </script>	140 </script>

141 </head>	141 </head>

142	142

143 <body>	143 <body>

144 </body>	144 </body>

145 </html>	145 </html>

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