LayoutTests/compositing/overflow/build-paint-order-lists.html - Issue 14741004: NOT FOR REVIEW - Update comp-scrolling state at a well defined point in the pipeline.

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Issue 14741004: NOT FOR REVIEW - Update comp-scrolling state at a well defined point in the pipeline. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Added annotations describing how this patch will be split. Created 7 years, 7 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 border: 1px solid black;	10 border: 1px solid black;

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73 if (stackingOrder[i] === paintOrder[paintOrder.length - j - 1])	73 if (stackingOrder[i] === paintOrder[paintOrder.length - j - 1])

74 j++;	74 j++;

75	75

76 if (debugMode)	76 if (debugMode)

77 write(stackingOrder.length + " " + i + " " + paintOrder.length + " " + j );	77 write(stackingOrder.length + " " + i + " " + paintOrder.length + " " + j );

78	78

79 return j == paintOrder.length;	79 return j == paintOrder.length;

80 }	80 }

81	81

82 function testPermutation(count) {	82 function testPermutation(count) {

	83 // PATCH 1 (and below)

	84 if (!window.internals)

	85 return;

	86

83 var container = document.getElementById('container');	87 var container = document.getElementById('container');

84 // Here we want to compare paint order lists before and after promotion	88 // Here we want to compare paint order lists before and after promotion

85 // to the actual stacking order as determined by hit-testing. So we	89 // to the actual stacking order as determined by hit-testing. So we

86 // first force the element not to promote, then compute its paint and	90 // first force the element not to promote, then compute its paint and

87 // stacking order lists. We then force the element to opt in, and	91 // stacking order lists. We then force the element to opt in, and

88 // generate the paint and stacking order lists after opt-in.	92 // generate the paint and stacking order lists after opt-in.

89 //	93 //

90 // The paint order lists should exactly match the stacking order lists	94 // The paint order lists should exactly match the stacking order lists

91 // (modulo children that fall outside of the hit-testing area	95 // (modulo children that fall outside of the hit-testing area

92 // on-screen), both before and after promotion.	96 // on-screen), both before and after promotion.

93 container.style.webkitTransform = 'translateZ(0px)';	97 container.style.webkitTransform = 'translateZ(0px)';

94 document.body.offsetTop;	98 document.body.offsetTop;

95	99

96 window.internals.settings.setAcceleratedCompositingForOverflowScrollEnable d(false);	100 window.internals.setNeedsCompositedScrolling(container,

	101 window.internals.FORCE_COMPOSITED_SCROLLING_OFF);

97 container.style.webkitTransform = '';	102 container.style.webkitTransform = '';

98	103

99 var oldStackingOrder = getStackingOrder(container);	104 var oldStackingOrder = getStackingOrder(container);

100 var oldPaintOrder = getPaintOrder(container);	105 var oldPaintOrder = getPaintOrder(container);

101	106

102 window.internals.settings.setAcceleratedCompositingForOverflowScrollEnable d(true);	107 window.internals.setNeedsCompositedScrolling(container,

	108 window.internals.FORCE_COMPOSITED_SCROLLING_ON);

103 container.style.webkitTransform = 'translateZ(0px)';	109 container.style.webkitTransform = 'translateZ(0px)';

104	110

105 var newStackingOrder = getStackingOrder(container);	111 var newStackingOrder = getStackingOrder(container);

106 var newPaintOrder = getPaintOrder(container);	112 var newPaintOrder = getPaintOrder(container);

107	113

108 // The getPaintOrder() function should return a pair of paint orders.	114 // The getPaintOrder() function should return a pair of paint orders.

109 // One before promotion and one after. This pair of lists should remain	115 // One before promotion and one after. This pair of lists should remain

110 // identical whether the element is actually currently promoted or not,	116 // identical whether the element is actually currently promoted or not,

111 // its purpose is to generate hypothetical pre- and post-lists to	117 // its purpose is to generate hypothetical pre- and post-lists to

112 // determine if the element is promotable.	118 // determine if the element is promotable.

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134 permute(testPermutation);	140 permute(testPermutation);

135 }	141 }

136	142

137 window.addEventListener('load', doTest, false);	143 window.addEventListener('load', doTest, false);

138 </script>	144 </script>

139 </head>	145 </head>

140	146

141 <body>	147 <body>

142 </body>	148 </body>

143 </html>	149 </html>

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