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| 1 <!DOCTYPE html> |
| 2 <canvas id='output0' width='100' height='100'></canvas> |
| 3 <canvas id='output1' width='100' height='100'></canvas> |
| 4 <canvas id='output2' width='100' height='100'></canvas> |
| 5 <canvas id='output3' width='100' height='100'></canvas> |
| 6 <canvas id='output4' width='100' height='100'></canvas> |
| 7 <canvas id='output5' width='100' height='100'></canvas> |
| 8 <canvas id='output6' width='100' height='100'></canvas> |
| 9 <canvas id='output7' width='100' height='100'></canvas> |
| 10 <canvas id='output8' width='100' height='100'></canvas> |
| 11 <canvas id='output9' width='100' height='100'></canvas> |
| 12 <canvas id='output10' width='100' height='100'></canvas> |
| 13 <canvas id='output11' width='100' height='100'></canvas> |
| 14 |
| 15 <script> |
| 16 var patternCanvas = document.createElement('canvas'); |
| 17 patternCanvas.width = 30; |
| 18 patternCanvas.height = 30; |
| 19 var patternCtx = patternCanvas.getContext('2d'); |
| 20 patternCtx.fillStyle = '#A00'; |
| 21 patternCtx.fillRect(0, 0, 15, 15); |
| 22 patternCtx.fillStyle = '#0A0'; |
| 23 patternCtx.fillRect(15, 0, 15, 15); |
| 24 patternCtx.fillStyle = '#00A'; |
| 25 patternCtx.fillRect(0, 15, 15, 15); |
| 26 patternCtx.fillStyle = "#AA0"; |
| 27 patternCtx.fillRect(15, 15, 15, 15); |
| 28 |
| 29 var paint = function(id, filter) { |
| 30 var c = document.getElementById(id); |
| 31 var ctx = c.getContext('2d'); |
| 32 ctx.filter = filter; |
| 33 ctx.drawImage(patternCanvas, 5, 5); |
| 34 ctx.drawImage(patternCanvas, 35, 35); |
| 35 ctx.drawImage(patternCanvas, 65, 65); |
| 36 return ctx; |
| 37 }; |
| 38 |
| 39 paint('output0', "none"); |
| 40 paint('output1', "blur(10px)"); |
| 41 paint('output2', "brightness(40%)"); |
| 42 paint('output3', "contrast(20%)"); |
| 43 paint('output4', "drop-shadow(0 0 5px green)"); |
| 44 paint('output5', "grayscale(100%)"); |
| 45 paint('output6', "invert(100%)"); |
| 46 paint('output7', "opacity(50%)"); |
| 47 paint('output8', "saturate(20%)"); |
| 48 paint('output9', "sepia(100%)"); |
| 49 paint('output10', "sepia(1) hue-rotate(200deg)"); |
| 50 paint('output11', "url(#url)"); |
| 51 </script> |
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