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Side by Side Diff: LayoutTests/dart/dom/Canvas.dart

Issue 9188009: Things to unfork. (Closed) Base URL: svn://svn.chromium.org/multivm/trunk/webkit
Patch Set: Created 8 years, 11 months ago
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1 #import('../../../../../dart/client/testing/unittest/unittest.dart');
2 #import('dart:dom');
3
4 main() {
5 HTMLCanvasElement canvas;
6 CanvasRenderingContext2D context;
7 int width = 100;
8 int height = 100;
9
10 // FIXME: once main is run on content loaded, this hack won't be necessary.
11 window.setTimeout(() {
12 canvas = document.createElement('canvas');
13 canvas.setAttribute('width', '$width');
14 canvas.setAttribute('height', '$height');
15 document.body.appendChild(canvas);
16
17 context = canvas.getContext('2d');
18 }, 0);
19
20 forLayoutTests();
21 test('FillStyle', () {
22 context.fillStyle = "red";
23 context.fillRect(10, 10, 20, 20);
24
25 CanvasPixelArray data = context.getImageData(0, 0, width, height).data;
26 checkPixel(data, 0, [0, 0, 0, 0]);
27 checkPixel(data, 9 + width * 10, [0, 0, 0, 0]);
28 checkPixel(data, 10 + width * 10, [255, 0, 0, 255]);
29 checkPixel(data, 29 + width * 10, [255, 0, 0, 255]);
30 checkPixel(data, 30 + width * 10, [0, 0, 0, 0]);
31 });
32 test('SetFillColor', () {
33 // With floats.
34 context.setFillColor(10, 10, 10, 10);
35 context.fillRect(10, 10, 20, 20);
36
37 // With rationals.
38 context.setFillColor(10.0, 10.0, 10.0, 10.0);
39 context.fillRect(20, 20, 30, 30);
40
41 // With ints.
42 context.setFillColor(10, 10, 10, 10);
43 context.fillRect(30, 30, 40, 40);
44
45 // TODO(vsm): Verify the result once we have the ability to read pixels.
46 });
47 test('StrokeStyle', () {
48 context.strokeStyle = "blue";
49 context.strokeRect(30, 30, 10, 20);
50
51 // TODO(vsm): Verify the result once we have the ability to read pixels.
52 });
53 test('CreateImageData', () {
54 ImageData image = context.createImageData(canvas.width,
55 canvas.height);
56 CanvasPixelArray data = image.data;
57
58 Expect.equals(40000, data.length);
59 checkPixel(data, 0, [0, 0, 0, 0]);
60 checkPixel(data, width * height - 1, [0, 0, 0, 0]);
61
62 data[100] = 200;
63 Expect.equals(200, data[100]);
64 });
65 test('PutImageData', () {
66 ImageData data = context.getImageData(0, 0, width, height);
67 data.data[0] = 25;
68 data.data[3] = 255;
69 context.putImageData(data, 0, 0);
70
71 data = context.getImageData(0, 0, width, height);
72 Expect.equals(25, data.data[0]);
73 Expect.equals(255, data.data[3]);
74 });
75 }
76
77 void checkPixel(CanvasPixelArray data, int offset, List<int> rgba)
78 {
79 offset *= 4;
80 for (var i = 0; i < 4; ++i) {
81 Expect.equals(rgba[i], data[offset + i]);
82 }
83 }
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