OLD | NEW |
| (Empty) |
1 <!DOCTYPE html> | |
2 <script src="../../../../resources/js-test.js"></script> | |
3 <script> | |
4 jsTestIsAsync = true; | |
5 | |
6 description("Tests that createImageBitmap from a canvas.toBlob object should hav
e the same pixel data as the blob."); | |
7 | |
8 var imageData2; | |
9 var imageData3; | |
10 | |
11 var canvas1 = document.createElement("canvas"); | |
12 var ctx1 = canvas1.getContext("2d"); | |
13 ctx1.fillStyle = "#FF0000"; | |
14 ctx1.fillRect(0, 0, 150, 75); | |
15 | |
16 var newImg = new Image(); | |
17 newImg.onload = function() { | |
18 var canvas3 = document.createElement("canvas"); | |
19 var ctx3 = canvas3.getContext("2d"); | |
20 ctx3.drawImage(newImg, 0, 0, 150, 75); | |
21 | |
22 imageData3 = ctx3.getImageData(0, 0, 150, 75).data; | |
23 var imageMatched = true; | |
24 for (var i = 1; i < imageData2.length; i++) { | |
25 if (imageData2[i] != imageData3[i]) { | |
26 imageMatched = false; | |
27 break; | |
28 } | |
29 } | |
30 if (imageMatched) | |
31 testPassed("image data from the created ImageBitmap and the originated b
lob is the same"); | |
32 else | |
33 testFailed("image data from the created ImageBitmap and the originated b
lob is NOT the same"); | |
34 finishJSTest(); | |
35 } | |
36 | |
37 canvas1.toBlob(function(blob) { | |
38 createImageBitmap(blob).then(imageBitmap => { | |
39 var canvas2 = document.createElement("canvas"); | |
40 var ctx2 = canvas2.getContext("2d"); | |
41 ctx2.drawImage(imageBitmap, 0, 0, 150, 75); | |
42 imageData2 = ctx2.getImageData(0, 0, 150, 75).data; | |
43 url = URL.createObjectURL(blob); | |
44 newImg.src = url; | |
45 }); | |
46 }); | |
47 </script> | |
OLD | NEW |