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| 1 <!doctype html> |
| 2 <style> |
| 3 svg { |
| 4 display: none; |
| 5 } |
| 6 canvas { |
| 7 border: 1px solid black; |
| 8 } |
| 9 </style> |
| 10 |
| 11 <svg id="s1" width="200px" height="20px"> |
| 12 <image id="img1" href="resources/pattern.png" x="0" y="0" width="20px" height=
"20px" /> |
| 13 <image id="img2" href="resources/pattern.png" x="20" y="0" width="40px" height
="40px" /> |
| 14 <image id="img3" href="resources/pattern.png" x="40" y="0" width="40px" height
="40px" /> |
| 15 <image id="img4" href="invalid" x="60" y="0" width="20px" height="20px" /> |
| 16 <image id="img5" href="resources/pattern.png" x="80" y="0" width="20px" height
="20px" /> |
| 17 </svg> |
| 18 |
| 19 <canvas id="c1" width="20" height="20"></canvas> |
| 20 <canvas id="c2" width="20" height="20"></canvas> |
| 21 <canvas id="c3" width="20" height="20"></canvas> |
| 22 <canvas id="c4" width="20" height="20"></canvas> |
| 23 <canvas id="c5" width="20" height="20"></canvas> |
| 24 <canvas id="c6" width="20" height="20"></canvas> |
| 25 |
| 26 <script> |
| 27 var draw = function(target, img, x, y, opts) { |
| 28 document.getElementById(img).addEventListener("load", function() { |
| 29 createImageBitmap(this, opts).then((ib) => { |
| 30 document.getElementById(target).getContext("2d").drawImage( |
| 31 ib, x || 0, y || 0); |
| 32 }); |
| 33 }); |
| 34 } |
| 35 |
| 36 draw("c1", "img1"); |
| 37 draw("c2", "img2", 10, 10); |
| 38 draw("c3", "img3"); |
| 39 draw("c4", "img4"); |
| 40 document.getElementById("c5").getContext("2d").drawImage( |
| 41 document.getElementById("img5"), 0, 0); |
| 42 draw("c6", "img2", 0, 0, {resizeWidth: 10, resizeHeight: 10}); |
| 43 |
| 44 </script> |
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