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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkColorPriv.h"
#include "SkShader.h"
/*
* Want to ensure that our bitmap sampler (in bitmap shader) keeps plenty of
* precision when scaling very large images (where the dx might get very small.
*/
#define W 257
#define H 161
class GiantBitmapGM : public skiagm::GM {
SkBitmap* fBM;
SkShader::TileMode fMode;
bool fDoFilter;
bool fDoRotate;
const SkBitmap& getBitmap() {
if (NULL == fBM) {
fBM = new SkBitmap;
fBM->setConfig(SkBitmap::kARGB_8888_Config, W, H);
fBM->allocPixels();
fBM->eraseColor(SK_ColorWHITE);
const SkColor colors[] = {
SK_ColorBLUE, SK_ColorRED, SK_ColorBLACK, SK_ColorGREEN
};
SkCanvas canvas(*fBM);
SkPaint paint;
paint.setAntiAlias(true);
paint.setStrokeWidth(SkIntToScalar(20));
#if 0
for (int y = -H*2; y < H; y += 50) {
SkScalar yy = SkIntToScalar(y);
paint.setColor(colors[y/50 & 0x3]);
canvas.drawLine(0, yy, SkIntToScalar(W), yy + SkIntToScalar(W),
paint);
}
#else
for (int x = -W; x < W; x += 60) {
paint.setColor(colors[x/60 & 0x3]);
SkScalar xx = SkIntToScalar(x);
canvas.drawLine(xx, 0, xx, SkIntToScalar(H),
paint);
}
#endif
}
return *fBM;
}
public:
GiantBitmapGM(SkShader::TileMode mode, bool doFilter, bool doRotate) : fBM(NULL) {
fMode = mode;
fDoFilter = doFilter;
fDoRotate = doRotate;
}
virtual ~GiantBitmapGM() {
SkDELETE(fBM);
}
protected:
virtual SkString onShortName() {
SkString str("giantbitmap_");
switch (fMode) {
case SkShader::kClamp_TileMode:
str.append("clamp");
break;
case SkShader::kRepeat_TileMode:
str.append("repeat");
break;
case SkShader::kMirror_TileMode:
str.append("mirror");
break;
default:
break;
}
str.append(fDoFilter ? "_bilerp" : "_point");
str.append(fDoRotate ? "_rotate" : "_scale");
return str;
}
virtual SkISize onISize() { return SkISize::Make(640, 480); }
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
SkShader* s = SkShader::CreateBitmapShader(getBitmap(), fMode, fMode);
SkMatrix m;
if (fDoRotate) {
// m.setRotate(SkIntToScalar(30), 0, 0);
m.setSkew(SK_Scalar1, 0, 0, 0);
// m.postScale(2*SK_Scalar1/3, 2*SK_Scalar1/3);
} else {
SkScalar scale = 11*SK_Scalar1/12;
m.setScale(scale, scale);
}
s->setLocalMatrix(m);
paint.setShader(s)->unref();
paint.setFilterBitmap(fDoFilter);
canvas->translate(SkIntToScalar(50), SkIntToScalar(50));
// SkRect r = SkRect::MakeXYWH(-50, -50, 32, 16);
// canvas->drawRect(r, paint); return;
canvas->drawPaint(paint);
}
private:
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static skiagm::GM* G000(void*) { return new GiantBitmapGM(SkShader::kClamp_TileMode, false, false); }
static skiagm::GM* G100(void*) { return new GiantBitmapGM(SkShader::kRepeat_TileMode, false, false); }
static skiagm::GM* G200(void*) { return new GiantBitmapGM(SkShader::kMirror_TileMode, false, false); }
static skiagm::GM* G010(void*) { return new GiantBitmapGM(SkShader::kClamp_TileMode, true, false); }
static skiagm::GM* G110(void*) { return new GiantBitmapGM(SkShader::kRepeat_TileMode, true, false); }
static skiagm::GM* G210(void*) { return new GiantBitmapGM(SkShader::kMirror_TileMode, true, false); }
static skiagm::GM* G001(void*) { return new GiantBitmapGM(SkShader::kClamp_TileMode, false, true); }
static skiagm::GM* G101(void*) { return new GiantBitmapGM(SkShader::kRepeat_TileMode, false, true); }
static skiagm::GM* G201(void*) { return new GiantBitmapGM(SkShader::kMirror_TileMode, false, true); }
static skiagm::GM* G011(void*) { return new GiantBitmapGM(SkShader::kClamp_TileMode, true, true); }
static skiagm::GM* G111(void*) { return new GiantBitmapGM(SkShader::kRepeat_TileMode, true, true); }
static skiagm::GM* G211(void*) { return new GiantBitmapGM(SkShader::kMirror_TileMode, true, true); }
static skiagm::GMRegistry reg000(G000);
static skiagm::GMRegistry reg100(G100);
static skiagm::GMRegistry reg200(G200);
static skiagm::GMRegistry reg010(G010);
static skiagm::GMRegistry reg110(G110);
static skiagm::GMRegistry reg210(G210);
static skiagm::GMRegistry reg001(G001);
static skiagm::GMRegistry reg101(G101);
static skiagm::GMRegistry reg201(G201);
static skiagm::GMRegistry reg011(G011);
static skiagm::GMRegistry reg111(G111);
static skiagm::GMRegistry reg211(G211);
|
