| <html> |
| <head> |
| <style> |
| #test { |
| height: 0px; |
| } |
| .child { |
| height: 5px; |
| width: 5px; |
| margin: 5px; |
| } |
| .layer { |
| -webkit-transform: translateZ(0); |
| } |
| </style> |
| </head> |
| <body> |
| <pre id='log'> |
| </pre> |
| <div id='test'> |
| </div> |
| <script src="../resources/magnitude-perf.js"></script> |
| <script> |
| if (window.internals) { |
| window.internals.settings.setForceCompositingMode(true); |
| } |
| |
| function log(msg) |
| { |
| document.getElementById('log').innerText += msg + '\n'; |
| } |
| |
| var testNode; |
| |
| function setupFunction(magnitude, className) |
| { |
| testNode = document.getElementById('test'); |
| testNode.innerHTML = ''; |
| for(var i = 0; i < magnitude; i++) { |
| var child = document.createElement('div'); |
| child.className = className; |
| testNode.appendChild(child); |
| } |
| |
| // Force any pending full layout (since hit rect computation will be skipped |
| // when there is a layout pending). It's important that layout isn't dirtied |
| // after this before the tests run, or we'll get low linear times for everything. |
| document.body.getBoundingClientRect(); |
| |
| } |
| |
| // Test 1 tests that rect calculation is linear in the number of rects in a layer. |
| |
| function setupFunction1(magnitude) |
| { |
| setupFunction(magnitude, 'child'); |
| } |
| |
| // Test 2 tests that rect calculation is linear in the number of layers. |
| |
| function setupFunction2(magnitude) |
| { |
| setupFunction(magnitude, 'child layer'); |
| } |
| |
| function touchHandler(event) |
| { |
| } |
| |
| function test(magnitude) |
| { |
| // Adding or removing a touch handler will force recomputation of the |
| // touch hit rects. Note layout also forces recomputation and is the more |
| // relevant scenario, but is too noisy to use for a perf test. |
| testNode.addEventListener('touchstart', touchHandler); |
| |
| // Note that if the times aren't coming out as expected, you should check here that the expected |
| // touch hit rects were generated by using window.internals.touchEventTargetLayerRects(document). |
| // For example, run in content_shell with --expose-internals-for-testing. |
| testNode.removeEventListener('touchstart', touchHandler); |
| } |
| |
| Magnitude.description('Tests that compositor touch hit rect calculation is ' + |
| 'linear in the number of rects and in the number of layers.'); |
| |
| // Wait for first layout. |
| document.body.getBoundingClientRect(); |
| |
| // Verify that compositor touch hit testing is properly enabled. |
| if (window.internals) { |
| var testNode = document.getElementById('test'); |
| r = testNode.getBoundingClientRect(); |
| |
| testNode.addEventListener('touchstart', touchHandler); |
| var rects = window.internals.touchEventTargetLayerRects(document); |
| if (!rects) { |
| log("FAIL - no hit test rects exist, is compositing enabled?"); |
| return; |
| } |
| if (!rects.length) { |
| log("FAIL - no hit test rects found, is ScrollingCoordinator::touchHitTestingEnabled false?"); |
| } |
| testNode.removeEventListener('touchstart', touchHandler); |
| } else { |
| log("WARNING - missing windows.internals, can't verify hit testing is enabled."); |
| } |
| |
| |
| Magnitude.trim = 1; |
| Magnitude.tolerance = 0.80; |
| |
| Magnitude.initialExponent = 7; |
| Magnitude.numPoints = 5; |
| Magnitude.run(setupFunction1, test, Magnitude.LINEAR); |
| |
| Magnitude.initialExponent = 4; |
| Magnitude.numPoints = 5; |
| Magnitude.run(setupFunction2, test, Magnitude.LINEAR); |
| |
| </script> |
| </body> |
