OLD | NEW |
| (Empty) |
1 description("Ensure correct behavior of canvas with fillRect+shadow after scalin
g. A blue and red checkered pattern should be displayed."); | |
2 | |
3 function print(message, color) | |
4 { | |
5 var paragraph = document.createElement("div"); | |
6 paragraph.appendChild(document.createTextNode(message)); | |
7 paragraph.style.fontFamily = "monospace"; | |
8 if (color) | |
9 paragraph.style.color = color; | |
10 document.getElementById("console").appendChild(paragraph); | |
11 } | |
12 | |
13 function shouldBeAround(a, b) | |
14 { | |
15 var evalA; | |
16 try { | |
17 evalA = eval(a); | |
18 } catch(e) { | |
19 evalA = e; | |
20 } | |
21 | |
22 if (Math.abs(evalA - b) < 20) | |
23 print("PASS " + a + " is around " + b , "green") | |
24 else | |
25 print("FAIL " + a + " is not around " + b + " (actual: " + evalA + ")",
"red"); | |
26 } | |
27 | |
28 var canvas = document.createElement('canvas'); | |
29 document.body.appendChild(canvas); | |
30 canvas.setAttribute('width', '1000'); | |
31 canvas.setAttribute('height', '1000'); | |
32 var ctx = canvas.getContext('2d'); | |
33 | |
34 ctx.scale(2, 2); | |
35 ctx.shadowOffsetX = 100; | |
36 ctx.shadowOffsetY = 100; | |
37 ctx.fillStyle = 'rgba(0, 0, 255, 1)'; | |
38 | |
39 ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; | |
40 ctx.fillRect(50, 50, 50, 50); | |
41 | |
42 ctx.shadowColor = 'rgba(255, 0, 0, 0.3)'; | |
43 ctx.fillRect(50, 150, 50, 50); | |
44 | |
45 ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; | |
46 ctx.shadowBlur = 10; | |
47 ctx.fillRect(150, 50, 50, 50); | |
48 | |
49 ctx.shadowColor = 'rgba(255, 0, 0, 0.3)'; | |
50 ctx.fillRect(150, 150, 50, 50); | |
51 | |
52 var d; // imageData.data | |
53 | |
54 // Verify solid shadow. | |
55 d = ctx.getImageData(201, 205, 1, 1).data; | |
56 shouldBe('d[0]', '255'); | |
57 shouldBe('d[1]', '0'); | |
58 shouldBe('d[2]', '0'); | |
59 shouldBe('d[3]', '255'); | |
60 | |
61 d = ctx.getImageData(298, 298, 1, 1).data; | |
62 shouldBe('d[0]', '255'); | |
63 shouldBe('d[1]', '0'); | |
64 shouldBe('d[2]', '0'); | |
65 shouldBe('d[3]', '255'); | |
66 | |
67 d = ctx.getImageData(201, 298, 1, 1).data; | |
68 shouldBe('d[0]', '255'); | |
69 shouldBe('d[1]', '0'); | |
70 shouldBe('d[2]', '0'); | |
71 shouldBe('d[3]', '255'); | |
72 | |
73 // Verify solid alpha shadow. | |
74 d = ctx.getImageData(201, 405, 1, 1).data; | |
75 shouldBe('d[0]', '255'); | |
76 shouldBe('d[1]', '0'); | |
77 shouldBe('d[2]', '0'); | |
78 shouldBeAround('d[3]', '76'); | |
79 | |
80 d = ctx.getImageData(298, 405, 1, 1).data; | |
81 shouldBe('d[0]', '255'); | |
82 shouldBe('d[1]', '0'); | |
83 shouldBe('d[2]', '0'); | |
84 shouldBeAround('d[3]', '76'); | |
85 | |
86 d = ctx.getImageData(205, 498, 1, 1).data; | |
87 shouldBe('d[0]', '255'); | |
88 shouldBe('d[1]', '0'); | |
89 shouldBe('d[2]', '0'); | |
90 shouldBeAround('d[3]', '76'); | |
91 | |
92 // Verify blurry shadow. | |
93 d = ctx.getImageData(398, 205, 1, 1).data; | |
94 shouldBe('d[0]', '255'); | |
95 shouldBe('d[1]', '0'); | |
96 shouldBe('d[2]', '0'); | |
97 shouldBeAround('d[3]', '83'); | |
98 | |
99 d = ctx.getImageData(501, 205, 1, 1).data; | |
100 shouldBe('d[0]', '255'); | |
101 shouldBe('d[1]', '0'); | |
102 shouldBe('d[2]', '0'); | |
103 shouldBeAround('d[3]', '83'); | |
104 | |
105 d = ctx.getImageData(500, 300, 1, 1).data; | |
106 shouldBe('d[0]', '255'); | |
107 shouldBe('d[1]', '0'); | |
108 shouldBe('d[2]', '0'); | |
109 shouldBeAround('d[3]', '53'); | |
110 | |
111 // Verify blurry alpha shadow. | |
112 d = ctx.getImageData(398, 405, 1, 1).data; | |
113 shouldBe('d[0]', '255'); | |
114 shouldBe('d[1]', '0'); | |
115 shouldBe('d[2]', '0'); | |
116 shouldBeAround('d[3]', '24'); | |
117 | |
118 d = ctx.getImageData(405, 501, 1, 1).data; | |
119 shouldBe('d[0]', '255'); | |
120 shouldBe('d[1]', '0'); | |
121 shouldBe('d[2]', '0'); | |
122 shouldBeAround('d[3]', '24'); | |
123 | |
124 d = ctx.getImageData(405, 501, 1, 1).data; | |
125 shouldBe('d[0]', '255'); | |
126 shouldBe('d[1]', '0'); | |
127 shouldBe('d[2]', '0'); | |
128 shouldBeAround('d[3]', '24'); | |
OLD | NEW |