| OLD | NEW |
|---|
| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <meta charset="utf-8"> |
| 3 <title>Canvas's ImageBitmapRenderingContext test</title> |
| 4 <script src="/resources/testharness.js"></script> |
| 5 <script src="/resources/testharnessreport.js"></script> |
| 6 <link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the
-imagebitmap-rendering-context"> |
| 7 <script> |
| 8 var width = 10; |
| 9 var height = 10; |
| 10 |
| 11 function testCanvas(ctx, r, g, b, a) |
| 12 { |
| 13 var color = ctx.getImageData(5, 5, 1, 1).data; |
| 14 assert_array_equals(color, [r, g, b, a]); |
| 15 } |
| 16 |
| 17 promise_test(function() { |
| 18 function testTransferFromImageBitmapNullability(greenImage, redImage) { |
| 19 var bitmapCanvas = document.createElement('canvas'); |
| 20 bitmapCanvas.width = width; |
| 21 bitmapCanvas.height = height; |
| 22 var bitmapCtx = bitmapCanvas.getContext('bitmaprenderer'); |
| 23 bitmapCtx.transferFromImageBitmap(greenImage); |
| 24 |
| 25 // Make sure the bitmap renderer canvas is filled correctly. |
| 26 var myCanvas = document.createElement('canvas'); |
| 27 myCanvas.width = width; |
| 28 myCanvas.height = height; |
| 29 var myCtx = myCanvas.getContext('2d'); |
| 30 myCtx.drawImage(bitmapCanvas, 0, 0); |
| 31 testCanvas(myCtx, 0, 255, 0, 255); |
| 32 |
| 33 // Test if passing null resets the bitmap renderer canvas. |
| 34 // Drawing the resetted canvas cannot change the destination canvas. |
| 35 bitmapCtx.transferFromImageBitmap(null); |
| 36 var myCanvas2 = document.createElement('canvas'); |
| 37 myCanvas2.width = width; |
| 38 myCanvas2.height = height; |
| 39 var myCtx2 = myCanvas2.getContext('2d'); |
| 40 myCtx2.drawImage(bitmapCanvas, 0, 0); |
| 41 testCanvas(myCtx2, 0, 0, 0, 0); |
| 42 |
| 43 // Test if we can redraw the bitmap canvas correctly after reset. |
| 44 bitmapCtx.transferFromImageBitmap(redImage); |
| 45 var myCanvas3 = document.createElement('canvas'); |
| 46 myCanvas3.width = width; |
| 47 myCanvas3.height = height; |
| 48 var myCtx3 = myCanvas3.getContext('2d'); |
| 49 myCtx3.drawImage(bitmapCanvas, 0, 0); |
| 50 testCanvas(myCtx3, 255, 0, 0, 255); |
| 51 } |
| 52 |
| 53 var greenCanvas = document.createElement('canvas'); |
| 54 greenCanvas.width = width; |
| 55 greenCanvas.height = height; |
| 56 var greenCtx = greenCanvas.getContext('2d'); |
| 57 greenCtx.fillStyle = '#0f0'; |
| 58 greenCtx.fillRect(0, 0, width, height); |
| 59 |
| 60 var redCanvas = document.createElement('canvas'); |
| 61 redCanvas.width = width; |
| 62 redCanvas.height = height; |
| 63 var redCtx = redCanvas.getContext('2d'); |
| 64 redCtx.fillStyle = '#f00'; |
| 65 redCtx.fillRect(0, 0, width, height); |
| 66 |
| 67 return Promise.all([ |
| 68 createImageBitmap(greenCanvas), |
| 69 createImageBitmap(redCanvas), |
| 70 ]).then(([greenImage, redImage]) => { |
| 71 testTransferFromImageBitmapNullability(greenImage, redImage); |
| 72 }); |
| 73 },'Test that transferFromImageBitmap(null) discards the previously transferred i
mage'); |
| 74 |
| 75 </script> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2502433002:
Import wpt@8dc7bfef80f5df47e14509d1496bdbc5ec24c91c (Closed)
