OLD | NEW |
(Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <body> |
| 4 |
| 5 <canvas id='output0' width='100' height='100'></canvas> |
| 6 <canvas id='output1' width='100' height='100'></canvas> |
| 7 <canvas id='output2' width='100' height='100'></canvas> |
| 8 <canvas id='output3' width='100' height='100'></canvas> |
| 9 <canvas id='output4' width='100' height='100'></canvas> |
| 10 <canvas id='output5' width='100' height='100'></canvas> |
| 11 <canvas id='output6' width='100' height='100'></canvas> |
| 12 <canvas id='output7' width='100' height='100'></canvas> |
| 13 <canvas id='output8' width='100' height='100'></canvas> |
| 14 <canvas id='output9' width='100' height='100'></canvas> |
| 15 <canvas id='output10' width='100' height='100'></canvas> |
| 16 <canvas id='output11' width='100' height='100'></canvas> |
| 17 |
| 18 <script id='myWorker' type='text/worker'> |
| 19 self.onmessage = function(e) { |
| 20 |
| 21 var paint = function(filter) { |
| 22 var aCanvas = new OffscreenCanvas(100, 100); |
| 23 var ctx = aCanvas.getContext('2d'); |
| 24 ctx.filter = filter; |
| 25 ctx.drawImage(e.data, 5, 5); |
| 26 ctx.drawImage(e.data, 35, 35); |
| 27 ctx.drawImage(e.data, 65, 65); |
| 28 return aCanvas; |
| 29 }; |
| 30 |
| 31 var canvas = []; |
| 32 |
| 33 // canvas[0] = paint("blur(10px)"); |
| 34 |
| 35 canvas[0] = paint("none"); |
| 36 canvas[1] = paint("blur(10px)"); |
| 37 canvas[2] = paint("brightness(40%)"); |
| 38 canvas[3] = paint("contrast(20%)"); |
| 39 canvas[4] = paint("drop-shadow(0 0 5px #000)"); |
| 40 canvas[5] = paint("grayscale(100%)"); |
| 41 canvas[6] = paint("invert(100%)"); |
| 42 canvas[7] = paint("opacity(50%)"); |
| 43 canvas[8] = paint("saturate(20%)"); |
| 44 canvas[9] = paint("sepia(100%)"); |
| 45 canvas[10] = paint("sepia(1) hue-rotate(200deg)"); |
| 46 canvas[11] = paint("url(#url)"); |
| 47 |
| 48 var ret = []; |
| 49 for (var i = 0; i < canvas.length; ++i) { |
| 50 var img = canvas[i].transferToImageBitmap(); |
| 51 ret.push(img); |
| 52 } |
| 53 |
| 54 self.postMessage(ret, ret); |
| 55 }; |
| 56 </script> |
| 57 |
| 58 <script> |
| 59 if (window.testRunner) { |
| 60 testRunner.waitUntilDone(); |
| 61 } |
| 62 |
| 63 var patternCanvas = document.createElement('canvas'); |
| 64 patternCanvas.width = 30; |
| 65 patternCanvas.height = 30; |
| 66 var patternCtx = patternCanvas.getContext('2d'); |
| 67 patternCtx.fillStyle = '#A00'; |
| 68 patternCtx.fillRect(0, 0, 15, 15); |
| 69 patternCtx.fillStyle = '#0A0'; |
| 70 patternCtx.fillRect(15, 0, 15, 15); |
| 71 patternCtx.fillStyle = '#00A'; |
| 72 patternCtx.fillRect(0, 15, 15, 15); |
| 73 patternCtx.fillStyle = "#AA0"; |
| 74 patternCtx.fillRect(15, 15, 15, 15); |
| 75 createImageBitmap(patternCanvas).then(consumeImageBitmap); |
| 76 |
| 77 function consumeImageBitmap(patternImage) { |
| 78 var blob = new Blob([document.getElementById('myWorker').textContent]); |
| 79 var worker = new Worker(URL.createObjectURL(blob)); |
| 80 worker.addEventListener('message', msg => { |
| 81 for (var i = 0; i < msg.data.length; ++i) { |
| 82 var outputCtx = document.getElementById('output' + i).getContext('bitmapre
nderer'); |
| 83 outputCtx.transferFromImageBitmap(msg.data[i]); |
| 84 } |
| 85 if (window.testRunner) { |
| 86 testRunner.notifyDone(); |
| 87 } |
| 88 }); |
| 89 worker.postMessage(patternImage, [patternImage]); |
| 90 } |
| 91 </script> |
| 92 </body> |
| 93 </html> |
OLD | NEW |