| OLD | NEW |
|---|
| 1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
| 2 <html> | 2 <html> |
| 3 <head> | 3 <head> |
| 4 <style type="text/css"> | 4 <style type="text/css"> |
| 5 #backdrop { | 5 #backdrop { |
| 6 float: left; | 6 float: left; |
| 7 width: 512px; | 7 width: 512px; |
| 8 height: 512px; | 8 height: 512px; |
| 9 isolation: isolate; | 9 isolation: isolate; |
| 10 background-image: linear-gradient(to bottom, | 10 background-image: linear-gradient(to bottom, |
| 11 rgba(255, 255, 0, 0.9), | 11 rgba(255, 255, 0, 0.9), |
| 12 rgba(255, 0, 0, 0.9), | 12 rgba(255, 0, 0, 0.9), |
| 13 rgba(0, 255, 0, 0.9), | 13 rgba(0, 255, 0, 0.9), |
| 14 rgba(0, 0, 255, 0.9), | 14 rgba(0, 0, 255, 0.9), |
| 15 rgba(0, 0, 0, 0.9)); | 15 rgba(0, 0, 0, 0.9)); |
| 16 position: absolute; | 16 position: absolute; |
| 17 top: 100px; | 17 top: 100px; |
| 18 left: 100px; | 18 left: 100px; |
| 19 } | 19 } |
| 20 | 20 |
| 21 #backdrop div { | 21 #backdrop div { |
| 22 position: absolute; | 22 position: absolute; |
| 23 width: 100%; | 23 width: 100%; |
| 24 height: 100%; | 24 height: 100%; |
| 25 border-radius: 2px; | 25 border-radius: 2px; |
| 26 -webkit-transform-style: preserve-3d; | 26 transform-style: preserve-3d; |
| 27 } | 27 } |
| 28 </style> | 28 </style> |
| 29 <script src="resources/perf_test_helper.js"></script> | 29 <script src="resources/perf_test_helper.js"></script> |
| 30 <script type="text/javascript"> | 30 <script type="text/javascript"> |
| 31 var N = PerfTestHelper.getN(200); | 31 var N = PerfTestHelper.getN(200); |
| 32 var duration = 2000; | 32 var duration = 2000; |
| 33 function randomColorGenerator() | 33 function randomColorGenerator() |
| 34 { | 34 { |
| 35 return '#' + Math.floor(Math.random()*16777215).toString(16); | 35 return '#' + Math.floor(Math.random()*16777215).toString(16); |
| 36 } | 36 } |
| 37 function makeKeyframes() { | 37 function makeKeyframes() { |
| 38 var keyframes = []; | 38 var keyframes = []; |
| 39 var numKeyframes = 2; | 39 var numKeyframes = 2; |
| 40 for (var i = 0; i < numKeyframes + 1; i++) { | 40 for (var i = 0; i < numKeyframes + 1; i++) { |
| 41 var fraction = i / numKeyframes; | 41 var fraction = i / numKeyframes; |
| 42 var t = (fraction * 0.6) + 0.1; | 42 var t = (fraction * 0.6) + 0.1; |
| 43 keyframes.push({opacity: t}); | 43 keyframes.push({opacity: t}); |
| 44 } | 44 } |
| 45 return keyframes; | 45 return keyframes; |
| 46 } | 46 } |
| 47 function startExperiment() | 47 function startExperiment() |
| 48 { | 48 { |
| 49 var keyframes = makeKeyframes(); | 49 var keyframes = makeKeyframes(); |
| 50 for (var i = 0; i < N; i++) { | 50 for (var i = 0; i < N; i++) { |
| 51 var elem = document.createElement("div"); | 51 var elem = document.createElement("div"); |
| 52 elem.style.backgroundColor = randomColorGenerator(); | 52 elem.style.backgroundColor = randomColorGenerator(); |
| 53 elem.style.webkitTransform = "rotateZ(" + ((i + 1) * 10.1).toString() +
"deg)"; | 53 elem.style.transform = "rotateZ(" + ((i + 1) * 10.1).toString() + "deg)"
; |
| 54 backdrop.appendChild(elem); | 54 backdrop.appendChild(elem); |
| 55 elem.animate(keyframes, {duration: duration, iterations: Infinity, | 55 elem.animate(keyframes, {duration: duration, iterations: Infinity, |
| 56 direction: 'alternate', delay: -2 * duration * Math.random()}); | 56 direction: 'alternate', delay: -2 * duration * Math.random()}); |
| 57 } | 57 } |
| 58 PerfTestHelper.signalReady(); | 58 PerfTestHelper.signalReady(); |
| 59 } | 59 } |
| 60 window.addEventListener('load', startExperiment, false); | 60 window.addEventListener('load', startExperiment, false); |
| 61 </script> | 61 </script> |
| 62 </head> | 62 </head> |
| 63 <body> | 63 <body> |
| 64 <div id="backdrop"></div> | 64 <div id="backdrop"></div> |
| 65 </body> | 65 </body> |
| 66 </html> | 66 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2530253002:
CSS Animations: Reduce usage of webkit prefix in perf tests (Closed)
