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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <script src="../../../resources/testharness.js"></script> |
| 3 <script src="../../../resources/testharnessreport.js"></script> |
| 4 <script> |
| 5 |
| 6 function testCanvas_0f0(ctx) { |
| 7 var colorData = ctx.getImageData(50, 50, 1, 1).data; |
| 8 assert_equals(colorData[0], 0); |
| 9 assert_equals(colorData[1], 255); |
| 10 assert_equals(colorData[2], 0); |
| 11 assert_equals(colorData[3], 255); |
| 12 } |
| 13 |
| 14 function testCanvasReset(ctx) { |
| 15 var colorData = ctx.getImageData(50, 50, 1, 1).data; |
| 16 assert_equals(colorData[0], 0); |
| 17 assert_equals(colorData[1], 0); |
| 18 assert_equals(colorData[2], 0); |
| 19 assert_equals(colorData[3], 0); |
| 20 } |
| 21 |
| 22 function testTransferFromImageBitmapNullability(image) { |
| 23 var bitmapCanvas = document.createElement('canvas'); |
| 24 bitmapCanvas.width = bitmapCanvas.height = 100; |
| 25 var bitmapCtx = bitmapCanvas.getContext('bitmaprenderer'); |
| 26 bitmapCtx.transferFromImageBitmap(image); |
| 27 |
| 28 // Make sure the bitmap renderer canvas is filled correctly. |
| 29 var myCanvas = document.createElement('canvas'); |
| 30 myCanvas.width = myCanvas.height = 100; |
| 31 var myCtx = myCanvas.getContext('2d'); |
| 32 myCtx.drawImage(bitmapCanvas, 0, 0); |
| 33 testCanvas_0f0(myCtx); |
| 34 |
| 35 // Test if passing null resets the bitmap renderer canvas. |
| 36 // Drawing the resetted canvas cannot change the destination canvas. |
| 37 bitmapCtx.transferFromImageBitmap(null); |
| 38 var myCanvas2 = document.createElement('canvas'); |
| 39 myCanvas2.width = myCanvas2.height = 100; |
| 40 var myCtx2 = myCanvas2.getContext('2d'); |
| 41 myCtx2.drawImage(bitmapCanvas, 0, 0); |
| 42 testCanvasReset(myCtx2); |
| 43 |
| 44 // Test if we can redraw the bitmap canvas correctly after reset. |
| 45 bitmapCtx.transferFromImageBitmap(image); |
| 46 var myCanvas3 = document.createElement('canvas'); |
| 47 myCanvas3.width = myCanvas3.height = 100; |
| 48 var myCtx3 = myCanvas3.getContext('2d'); |
| 49 myCtx3.drawImage(bitmapCanvas, 0, 0); |
| 50 testCanvas_0f0(myCtx3); |
| 51 } |
| 52 |
| 53 promise_test(function() { |
| 54 var canvas = document.createElement('canvas'); |
| 55 canvas.width = canvas.height = 100; |
| 56 var ctx = canvas.getContext('2d'); |
| 57 ctx.fillStyle = '#0f0'; |
| 58 ctx.fillRect(0, 0, 100, 100); |
| 59 testCanvas_0f0(ctx); |
| 60 |
| 61 return createImageBitmap(canvas).then(testTransferFromImageBitmapNullability)
; |
| 62 }, 'testTransferFromImageBitmapNullability should not return any error'); |
| 63 |
| 64 </script> |
| 65 |
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Chromium Code Reviews
Issue 2251493003:
Adding nullability support to ImageBitmapRenderingContext.transferImageBitmap (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master