| <!DOCTYPE html> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <script> |
| function testCanvas_0f0(ctx) { |
| var colorData = ctx.getImageData(50, 50, 1, 1).data; |
| assert_equals(colorData[0], 0); |
| assert_equals(colorData[1], 255); |
| assert_equals(colorData[2], 0); |
| assert_equals(colorData[3], 255); |
| } |
| |
| function testException(image) { |
| var dstCanvas = document.createElement('canvas'); |
| dstCanvas.width = dstCanvas.height = 100; |
| var dstCtx = dstCanvas.getContext('bitmaprenderer'); |
| assert_true(dstCtx instanceof ImageBitmapRenderingContext); |
| dstCtx.transferFromImageBitmap(image); |
| |
| // image is detached after calling transferFromImageBitmap, |
| // so call transferFromImageBitmap(image) should throw InvalidStateError |
| assert_throws_dom("InvalidStateError", function() {dstCtx.transferFromImageBitmap(image);}); |
| } |
| |
| function testDrawCanvasWithImageBitamp(image) { |
| var dstCanvas = document.createElement('canvas'); |
| dstCanvas.width = dstCanvas.height = 100; |
| var dstCtx = dstCanvas.getContext('bitmaprenderer'); |
| assert_true(dstCtx instanceof ImageBitmapRenderingContext); |
| dstCtx.transferFromImageBitmap(image); |
| |
| // Calling dstCtx.canvas should get the same canvas as the dstCanvas |
| var testCanvas = dstCtx.canvas; |
| assert_equals(dstCanvas.width, testCanvas.width); |
| assert_equals(dstCanvas.height, testCanvas.height); |
| |
| // After transferFromImageBitmap, image's width && height should be 0 |
| assert_equals(image.width, 0); |
| assert_equals(image.height, 0); |
| |
| var myCanvas = document.createElement('canvas'); |
| myCanvas.width = myCanvas.height = 100; |
| var myCtx = myCanvas.getContext('2d'); |
| myCtx.drawImage(dstCanvas, 10, 10); |
| testCanvas_0f0(myCtx); |
| } |
| |
| promise_test(function() { |
| var canvas = document.createElement('canvas'); |
| canvas.width = canvas.height = 100; |
| var ctx = canvas.getContext('2d'); |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 100, 100); |
| testCanvas_0f0(ctx); |
| |
| return createImageBitmap(canvas).then(testDrawCanvasWithImageBitamp); |
| }, 'testDrawCanvasWithImageBitamp should not return any error'); |
| |
| promise_test(function() { |
| var canvas = document.createElement('canvas'); |
| canvas.width = canvas.height = 100; |
| var ctx = canvas.getContext('2d'); |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 100, 100); |
| |
| return createImageBitmap(canvas).then(testException); |
| }, 'transferFromImageBitmap(image) with a neutered image should throw InvalidStateError'); |
| |
| </script> |
