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Side by Side Diff: third_party/WebKit/LayoutTests/fast/canvas/script-tests/canvas-resetTransform.js

Issue 2696023002: Use testharness.js instead of js-test.js in LayoutTests/fast/canvas tests. (Closed)
Patch Set: Rebaseline Created 3 years, 10 months ago
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1 description("This test checks resetTransform in canvas v5");
2
3 var canvas = document.createElement('canvas');
4 document.body.appendChild(canvas);
5 canvas.setAttribute('width', '100');
6 canvas.setAttribute('height', '100');
7 var ctx = canvas.getContext('2d');
8
9 debug("resetTransform should reset other transforms.");
10 ctx.save();
11 ctx.scale(0.5, 0.5);
12 ctx.resetTransform();
13 ctx.fillStyle = 'green';
14 ctx.fillRect(0, 0, 100, 100);
15 ctx.restore();
16
17 var imageData = ctx.getImageData(98, 98, 1, 1);
18 var imgdata = imageData.data;
19 shouldBe("imgdata[0]", "0");
20 shouldBe("imgdata[1]", "128");
21 shouldBe("imgdata[2]", "0");
22
23 debug("resetTransform should not affect CTM outside of save() and restore().");
24 ctx.save();
25 ctx.scale(0.5, 0.5);
26 ctx.save();
27 ctx.resetTransform();
28 ctx.fillStyle = 'green';
29 ctx.fillRect(0, 0, 100, 100);
30 ctx.restore();
31 ctx.fillStyle = 'red';
32 ctx.fillRect(0, 0, 100, 100);
33 ctx.restore();
34
35 imageData = ctx.getImageData(98, 98, 1, 1);
36 imgdata = imageData.data;
37 shouldBe("imgdata[0]", "0");
38 shouldBe("imgdata[1]", "128");
39 shouldBe("imgdata[2]", "0");
40
41 imageData = ctx.getImageData(48, 48, 1, 1);
42 imgdata = imageData.data;
43 shouldBe("imgdata[0]", "255");
44 shouldBe("imgdata[1]", "0");
45 shouldBe("imgdata[2]", "0");
46
47 debug("resetTransform should restore the path transform to identity.");
48 /* This should draw a green rectangle on on top of a red one. The red should not be visible. */
49 ctx.save();
50 ctx.beginPath();
51 ctx.moveTo(0, 0);
52 ctx.lineTo(100, 0);
53 ctx.lineTo(100, 100);
54 ctx.lineTo(0, 100);
55 ctx.fillStyle = 'red';
56 ctx.fill();
57 ctx.translate(200, 0);
58 ctx.resetTransform();
59 ctx.fillStyle = 'green';
60 ctx.fill();
61 ctx.restore();
62
63 imageData = ctx.getImageData(50, 50, 1, 1);
64 imgdata = imageData.data;
65 shouldBe("imgdata[0]", "0");
66 shouldBe("imgdata[1]", "128");
67 shouldBe("imgdata[2]", "0");
68
69 debug("resetTransform should resolve the non-invertible CTM state.");
70 ctx.save();
71 ctx.fillStyle = 'red';
72 ctx.fillRect(0, 0, 100, 100);
73 ctx.beginPath();
74 ctx.moveTo(0, 0);
75 ctx.lineTo(100, 0);
76 ctx.lineTo(100, 100);
77 ctx.lineTo(0, 100);
78 ctx.scale(0, 0);
79 ctx.resetTransform();
80 ctx.fillStyle = 'green';
81 ctx.fill();
82 ctx.restore();
83
84 imageData = ctx.getImageData(98, 98, 1, 1);
85 imgdata = imageData.data;
86 shouldBe("imgdata[0]", "0");
87 shouldBe("imgdata[1]", "128");
88 shouldBe("imgdata[2]", "0");
89
90 debug("The path object should not be updated on the non-invertible CTM state.");
91 debug("resetTransform should restore the path object just before CTM became non- invertible.");
92 ctx.save();
93 ctx.fillStyle = 'red';
94 ctx.fillRect(0, 0, 100, 100);
95 ctx.beginPath();
96 ctx.moveTo(0, 0);
97 ctx.lineTo(100, 0);
98 ctx.lineTo(100, 50);
99 ctx.scale(0, 0);
100 ctx.lineTo(100, 100);
101 ctx.resetTransform();
102 ctx.lineTo(0, 100);
103 ctx.fillStyle = 'green';
104 ctx.fill();
105 ctx.restore();
106
107 imageData = ctx.getImageData(98, 98, 1, 1);
108 imgdata = imageData.data;
109 shouldBe("imgdata[0]", "255");
110 shouldBe("imgdata[1]", "0");
111 shouldBe("imgdata[2]", "0");
112
113 imageData = ctx.getImageData(98, 48, 1, 1);
114 imgdata = imageData.data;
115 shouldBe("imgdata[0]", "0");
116 shouldBe("imgdata[1]", "128");
117 shouldBe("imgdata[2]", "0");
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