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1 <html> | |
2 <head> | |
3 <style> | |
4 #test { | |
5 height: 0px; | |
6 } | |
7 .child { | |
8 height: 5px; | |
9 width: 5px; | |
10 margin: 5px; | |
11 } | |
12 .layer { | |
13 transform: translateZ(0); | |
14 } | |
15 </style> | |
16 </head> | |
17 <body> | |
18 <div id='test'> | |
19 </div> | |
20 <script src="../resources/magnitude-perf.js"></script> | |
21 <script> | |
22 | |
23 function log(msg) | |
24 { | |
25 Magnitude._log(msg); | |
26 } | |
27 | |
28 var testNode; | |
29 | |
30 function setupFunction(magnitude, className) | |
31 { | |
32 testNode = document.getElementById('test'); | |
33 testNode.innerHTML = ''; | |
34 for(var i = 0; i < magnitude; i++) { | |
35 var child = document.createElement('div'); | |
36 child.className = className; | |
37 testNode.appendChild(child); | |
38 } | |
39 | |
40 // Force any pending full layout (since hit rect computation will be skipped | |
41 // when there is a layout pending). It's important that layout isn't dirtie
d | |
42 // after this before the tests run, or we'll get low linear times for everyt
hing. | |
43 document.body.getBoundingClientRect(); | |
44 | |
45 } | |
46 | |
47 // Test 1 tests that rect calculation is linear in the number of rects in a laye
r. | |
48 | |
49 function setupFunction1(magnitude) | |
50 { | |
51 setupFunction(magnitude, 'child'); | |
52 } | |
53 | |
54 // Test 2 tests that rect calculation is linear in the number of layers. | |
55 | |
56 function setupFunction2(magnitude) | |
57 { | |
58 setupFunction(magnitude, 'child layer'); | |
59 } | |
60 | |
61 function touchHandler(event) | |
62 { | |
63 } | |
64 | |
65 function test(magnitude) | |
66 { | |
67 // Adding or removing a touch handler will force recomputation of the | |
68 // touch hit rects. Note layout also forces recomputation and is the more | |
69 // relevant scenario, but is too noisy to use for a perf test. | |
70 testNode.addEventListener('touchstart', touchHandler); | |
71 | |
72 // Note that if the times aren't coming out as expected, you should check he
re that the expected | |
73 // touch hit rects were generated by using window.internals.touchEventTarget
LayerRects(document). | |
74 // For example, run in content_shell with --expose-internals-for-testing. | |
75 testNode.removeEventListener('touchstart', touchHandler); | |
76 } | |
77 | |
78 Magnitude.description('Tests that compositor touch hit rect calculation is ' + | |
79 'linear in the number of rects and in the number of layers
.'); | |
80 | |
81 // Wait for first layout. | |
82 document.body.getBoundingClientRect(); | |
83 | |
84 function main() | |
85 { | |
86 // Verify that compositor touch hit testing is properly enabled. | |
87 if (!window.internals) { | |
88 log("WARNING - missing windows.internals, can't verify hit testing is en
abled."); | |
89 return; | |
90 } | |
91 var testNode = document.getElementById('test'); | |
92 r = testNode.getBoundingClientRect(); | |
93 | |
94 testNode.addEventListener('touchstart', touchHandler); | |
95 var rects = window.internals.touchEventTargetLayerRects(document); | |
96 if (!rects) { | |
97 log("FAIL - no hit test rects exist, is compositing enabled?"); | |
98 return; | |
99 } | |
100 if (!rects.length) { | |
101 log("FAIL - no hit test rects found, is ScrollingCoordinator::touchHitTest
ingEnabled false?"); | |
102 return; | |
103 } | |
104 testNode.removeEventListener('touchstart', touchHandler); | |
105 | |
106 | |
107 Magnitude.trim = 1; | |
108 Magnitude.tolerance = 0.80; | |
109 | |
110 Magnitude.initialExponent = 7; | |
111 Magnitude.numPoints = 5; | |
112 Magnitude.run(setupFunction1, test, Magnitude.LINEAR); | |
113 | |
114 Magnitude.initialExponent = 4; | |
115 Magnitude.numPoints = 5; | |
116 Magnitude.run(setupFunction2, test, Magnitude.LINEAR); | |
117 } | |
118 main(); | |
119 | |
120 </script> | |
121 </body> | |
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