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
|
/*
* 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 "SkGradientShader.h"
#include "SkTableColorFilter.h"
static void make_bm0(SkBitmap* bm) {
int W = 120;
int H = 120;
bm->setConfig(SkBitmap::kARGB_8888_Config, W, H);
bm->allocPixels();
bm->eraseColor(0);
SkCanvas canvas(*bm);
SkPaint paint;
SkPoint pts[] = { {0, 0}, {SkIntToScalar(W), SkIntToScalar(H)} };
SkColor colors[] = {
SK_ColorBLACK, SK_ColorGREEN, SK_ColorCYAN,
SK_ColorRED, 0, SK_ColorBLUE, SK_ColorWHITE
};
SkShader* s = SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors),
SkShader::kClamp_TileMode);
paint.setShader(s)->unref();
canvas.drawPaint(paint);
}
static void make_bm1(SkBitmap* bm) {
int W = 120;
int H = 120;
bm->setConfig(SkBitmap::kARGB_8888_Config, W, H);
bm->allocPixels();
bm->eraseColor(0);
SkCanvas canvas(*bm);
SkPaint paint;
SkScalar cx = SkIntToScalar(W)/2;
SkScalar cy = SkIntToScalar(H)/2;
SkColor colors[] = {
SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE,
};
SkShader* s = SkGradientShader::CreateRadial(SkPoint::Make(SkIntToScalar(W)/2,
SkIntToScalar(H)/2),
SkIntToScalar(W)/2, colors, NULL, SK_ARRAY_COUNT(colors),
SkShader::kClamp_TileMode);
paint.setShader(s)->unref();
paint.setAntiAlias(true);
canvas.drawCircle(cx, cy, cx, paint);
}
static void make_table0(uint8_t table[]) {
for (int i = 0; i < 256; ++i) {
int n = i >> 5;
table[i] = (n << 5) | (n << 2) | (n >> 1);
}
}
static void make_table1(uint8_t table[]) {
for (int i = 0; i < 256; ++i) {
table[i] = i * i / 255;
}
}
static void make_table2(uint8_t table[]) {
for (int i = 0; i < 256; ++i) {
float fi = i / 255.0f;
table[i] = sqrtf(fi) * 255;
}
}
static SkColorFilter* make_cf0() {
uint8_t table[256]; make_table0(table);
return SkTableColorFilter::Create(table);
}
static SkColorFilter* make_cf1() {
uint8_t table[256]; make_table1(table);
return SkTableColorFilter::Create(table);
}
static SkColorFilter* make_cf2() {
uint8_t table[256]; make_table2(table);
return SkTableColorFilter::Create(table);
}
static SkColorFilter* make_cf3() {
uint8_t table0[256]; make_table0(table0);
uint8_t table1[256]; make_table1(table1);
uint8_t table2[256]; make_table2(table2);
return SkTableColorFilter::CreateARGB(NULL, table0, table1, table2);
}
class TableColorFilterGM : public skiagm::GM {
public:
TableColorFilterGM() {}
protected:
virtual SkString onShortName() {
return SkString("tablecolorfilter");
}
virtual SkISize onISize() {
return SkISize::Make(640, 480);
}
virtual void onDraw(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
canvas->translate(20, 20);
SkScalar x = 0, y = 0;
static void (*gMakers[])(SkBitmap*) = { make_bm0, make_bm1 };
for (size_t maker = 0; maker < SK_ARRAY_COUNT(gMakers); ++maker) {
SkBitmap bm;
gMakers[maker](&bm);
SkPaint paint;
x = 0;
canvas->drawBitmap(bm, x, y, &paint);
paint.setColorFilter(make_cf0())->unref(); x += bm.width() * 9 / 8;
canvas->drawBitmap(bm, x, y, &paint);
paint.setColorFilter(make_cf1())->unref(); x += bm.width() * 9 / 8;
canvas->drawBitmap(bm, x, y, &paint);
paint.setColorFilter(make_cf2())->unref(); x += bm.width() * 9 / 8;
canvas->drawBitmap(bm, x, y, &paint);
paint.setColorFilter(make_cf3())->unref(); x += bm.width() * 9 / 8;
canvas->drawBitmap(bm, x, y, &paint);
y += bm.height() * 9 / 8;
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static skiagm::GM* MyFactory(void*) { return new TableColorFilterGM; }
static skiagm::GMRegistry reg(MyFactory);
|
