Chromium Code Reviews Chromium Code Reviews
Issue 20723003:
Fix pixel snapping issues when layers become composited (Closed)
Base URL: svn://svn.chromium.org/blink/trunk| OLD | NEW |
|---|---|
| (Empty) | |
| 1 <html> | |
|
eae
2013/11/13 00:29:01
Add a DOCTYPE to trigger standards mode for at lea
| |
| 2 <head> | |
| 3 <style> | |
| 4 #test { | |
| 5 margin: 5px; | |
| 6 } | |
| 7 .container { | |
| 8 position: absolute; | |
| 9 opacity: 0.95; | |
| 10 } | |
| 11 .shifter { | |
| 12 position: absolute; | |
| 13 background-color: black; | |
| 14 width: 12.5px; | |
| 15 height: 12.5px; | |
| 16 } | |
| 17 .shifter8x8 { | |
| 18 position: absolute; | |
| 19 background-color: black; | |
| 20 width: 16.5px; | |
| 21 height: 16.5px; | |
| 22 } | |
| 23 </style> | |
| 24 </head> | |
| 25 <body> | |
| 26 <div id=test> | |
| 27 </div> | |
| 28 <script> | |
| 29 function setupGrid10x10(leftOffset, topOffset, leftFraction, topFraction) | |
| 30 { | |
| 31 var test = document.getElementById('test'); | |
| 32 for (var i = 0; i < 10; i++) { | |
| 33 if (i == 5) | |
| 34 topOffset += 5; | |
| 35 var leftOffsetj = leftOffset; | |
| 36 for (var j = 0; j < 10; j++) { | |
| 37 if (j == 5) | |
| 38 leftOffsetj += 5; | |
| 39 var container = document.createElement("div"); | |
| 40 var shifter = document.createElement("div"); | |
| 41 container.setAttribute('class', 'container'); | |
| 42 shifter.setAttribute('class', 'shifter'); | |
| 43 container.style.left = (leftOffsetj + j * 16 + i * leftFraction) + "px" | |
| 44 container.style.top = (topOffset + i * 16 + i * topFraction) + " px" | |
| 45 shifter.style.left = (5 + j * leftFraction) + "px" | |
| 46 shifter.style.top = (5 + j * topFraction) + "px" | |
| 47 container.appendChild(shifter); | |
| 48 test.appendChild(container); | |
| 49 } | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 function setupGrid8x8(leftOffset, topOffset, leftFraction, topFraction) | |
| 54 { | |
| 55 var test = document.getElementById('test'); | |
| 56 for (var i = 0; i < 8; i++) { | |
| 57 if (i == 4) | |
| 58 topOffset += 5; | |
| 59 var leftOffsetj = leftOffset; | |
| 60 for (var j = 0; j < 8; j++) { | |
| 61 if (j == 4) | |
| 62 leftOffsetj += 5; | |
| 63 var container = document.createElement("div"); | |
| 64 var shifter = document.createElement("div"); | |
| 65 container.setAttribute('class', 'container'); | |
| 66 shifter.setAttribute('class', 'shifter8x8'); | |
| 67 container.style.left = (leftOffsetj + j * 20 + i * leftFraction) + "px" | |
| 68 container.style.top = (topOffset + i * 20 + i * topFraction) + " px" | |
| 69 shifter.style.left = (5 + j * leftFraction) + "px" | |
| 70 shifter.style.top = (5 + j * topFraction) + "px" | |
| 71 container.appendChild(shifter); | |
| 72 test.appendChild(container); | |
| 73 } | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 function setupTest() | |
| 78 { | |
| 79 // Vertical shifts: | |
| 80 setupGrid10x10(10, 10, 0, 0.1) | |
| 81 // Horizontal shifts: | |
| 82 setupGrid10x10(200, 10, 0.1, 0); | |
| 83 | |
| 84 // And in 8x8 (where exactly 0.5 is more common) | |
| 85 setupGrid8x8(10, 200, 0, 0.125); | |
| 86 setupGrid8x8(200, 200, 0.125, 0); | |
| 87 } | |
| 88 | |
| 89 setupTest(); | |
| 90 </script> | |
| 91 </body> | |
| 92 </html> | |
| OLD | NEW |
