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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmapSource.h"
#include "SkTileImageFilter.h"
#include "gm.h"
static void create_circle_texture(SkBitmap* bm, SkColor color) {
SkCanvas canvas(*bm);
canvas.clear(0xFF000000);
SkPaint paint;
paint.setColor(color);
paint.setStrokeWidth(3);
paint.setStyle(SkPaint::kStroke_Style);
canvas.drawCircle(SkScalarHalf(bm->width()), SkScalarHalf(bm->height()),
SkScalarHalf(bm->width()), paint);
}
namespace skiagm {
class BigTileImageFilterGM : public GM {
public:
BigTileImageFilterGM() {
this->setBGColor(0xFF000000);
}
protected:
SkString onShortName() override {
return SkString("bigtileimagefilter");
}
SkISize onISize() override{
return SkISize::Make(kWidth, kHeight);
}
void onOnceBeforeDraw() override {
fRedBitmap.allocN32Pixels(kBitmapSize, kBitmapSize);
create_circle_texture(&fRedBitmap, SK_ColorRED);
fGreenBitmap.allocN32Pixels(kBitmapSize, kBitmapSize);
create_circle_texture(&fGreenBitmap, SK_ColorGREEN);
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorBLACK);
{
SkPaint p;
SkRect bound = SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight));
SkAutoTUnref<SkBitmapSource> bms(SkBitmapSource::Create(fRedBitmap));
SkAutoTUnref<SkTileImageFilter> tif(SkTileImageFilter::Create(
SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)),
SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight)),
bms));
p.setImageFilter(tif);
canvas->saveLayer(&bound, &p);
canvas->restore();
}
{
SkPaint p2;
SkRect bound2 = SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize));
SkAutoTUnref<SkTileImageFilter> tif2(SkTileImageFilter::Create(
SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)),
SkRect::MakeWH(SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)),
nullptr));
p2.setImageFilter(tif2);
canvas->translate(320, 320);
canvas->saveLayer(&bound2, &p2);
canvas->setMatrix(SkMatrix::I());
SkRect bound3 = SkRect::MakeXYWH(320, 320,
SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize));
canvas->drawBitmapRect(fGreenBitmap, bound2, bound3, nullptr,
SkCanvas::kStrict_SrcRectConstraint);
canvas->restore();
}
}
private:
static const int kWidth = 512;
static const int kHeight = 512;
static const int kBitmapSize = 64;
SkBitmap fRedBitmap;
SkBitmap fGreenBitmap;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new BigTileImageFilterGM;)
}
|
