1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
<!DOCTYPE HTML>
<title>Canvas test: 2d.fill.pattern.imageSmoothingEnabled</title>
<!-- Testing: That imageSmoothingEnabled is taken into account when doing pattern fills-->
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<body>
<canvas id="c" width="128" height="128"><p class="fallback">FAIL (fallback content)</p></canvas>
<img id="img">
<script>
function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
var pixel = ctx.getImageData(x, y, 1, 1);
var pr = pixel.data[0],
pg = pixel.data[1],
pb = pixel.data[2],
pa = pixel.data[3];
ok(r-d <= pr && pr <= r+d &&
g-d <= pg && pg <= g+d &&
b-d <= pb && pb <= b+d &&
a-d <= pa && pa <= a+d,
"pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
}
function isNotPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
var pixel = ctx.getImageData(x, y, 1, 1);
var pr = pixel.data[0],
pg = pixel.data[1],
pb = pixel.data[2],
pa = pixel.data[3];
ok(!(r-d <= pr && pr <= r+d &&
g-d <= pg && pg <= g+d &&
b-d <= pb && pb <= b+d &&
a-d <= pa && pa <= a+d),
"pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; did not expect "+colour+" +/- "+d);
}
SimpleTest.waitForExplicitFinish();
addLoadEvent(function () {
var canvas = document.getElementById('c');
var ctx = canvas.getContext('2d');
var img = document.getElementById("img");
img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==";
img.onload = function () {
ctx.imageSmoothingEnabled = false;
ctx.save();
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.scale(16, 16);
ctx.fillStyle = ctx.createPattern(img, 'no-repeat');
ctx.fillRect(0, 0, 8, 8);
ctx.restore();
// Check for nearest filtering.
isPixel(ctx, 0,0, 0,0,0,255, "0,0", "0,0,0,255", 0);
isPixel(ctx, 14,14, 0,0,0,255, "14,14", "0,0,0,255", 0);
isPixel(ctx, 15,15, 0,0,0,255, "15,15", "0,0,0,255", 0);
isPixel(ctx, 16,16, 255,0,0,255, "16,16", "255,0,0,255", 0);
ctx.imageSmoothingEnabled = true;
ctx.save();
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.scale(16, 16);
ctx.fillStyle = ctx.createPattern(img, 'no-repeat');
ctx.fillRect(0, 0, 8, 8);
ctx.restore();
// Check that nearest filtering is not happening.
isPixel(ctx, 0,0, 0,0,0,255, "0,0", "0,0,0,255", 0);
isNotPixel(ctx, 14,14, 0,0,0,255, "14,14", "0,0,0,255", 0);
isNotPixel(ctx, 15,15, 0,0,0,255, "15,15", "0,0,0,255", 0);
isNotPixel(ctx, 16,16, 255,0,0,255, "16,16", "255,0,0,255", 0);
isPixel(ctx, 32,32, 255,0,0,255, "32,32", "255,0,0,255", 0);
SimpleTest.finish();
}
});
</script>
|
