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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
* Copyright 2013 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 "SkGradientShader.h"
#include "SkTypeface.h"
#include "SkImageDecoder.h"
#include "SkStream.h"
#include "SkPaint.h"
static void setTypeface(SkPaint* paint, const char name[], SkTypeface::Style style) {
SkSafeUnref(paint->setTypeface(SkTypeface::CreateFromName(name, style)));
}
class DownsampleBitmapGM : public skiagm::GM {
public:
SkBitmap fBM;
SkString fName;
bool fBitmapMade;
SkPaint::FilterLevel fFilterLevel;
DownsampleBitmapGM(SkPaint::FilterLevel filterLevel)
: fFilterLevel(filterLevel)
{
this->setBGColor(0xFFDDDDDD);
fBitmapMade = false;
}
const char* filterLevelToString() {
static const char *filterLevelNames[] = {
"none", "low", "medium", "high"
};
return filterLevelNames[fFilterLevel];
}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return fName;
}
virtual SkISize onISize() SK_OVERRIDE {
make_bitmap_wrapper();
return SkISize::Make(4 * fBM.width(), fBM.height());
}
void make_bitmap_wrapper() {
if (!fBitmapMade) {
fBitmapMade = true;
make_bitmap();
}
}
virtual void make_bitmap() = 0;
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
make_bitmap_wrapper();
int curX = 0;
int curWidth;
float curScale = 1;
do {
SkMatrix matrix;
matrix.setScale( curScale, curScale );
SkPaint paint;
paint.setFilterLevel(fFilterLevel);
canvas->save();
canvas->translate( (SkScalar) curX, 0.f );
canvas->drawBitmapMatrix( fBM, matrix, &paint );
canvas->restore();
curWidth = (int) (fBM.width() * curScale + 2);
curX += curWidth;
curScale *= 0.75f;
} while (curWidth >= 2 && curX < 4*fBM.width());
}
private:
typedef skiagm::GM INHERITED;
};
class DownsampleBitmapTextGM: public DownsampleBitmapGM {
public:
DownsampleBitmapTextGM(float textSize, SkPaint::FilterLevel filterLevel)
: INHERITED(filterLevel), fTextSize(textSize)
{
fName.printf("downsamplebitmap_text_%s_%.2fpt", this->filterLevelToString(), fTextSize);
}
protected:
float fTextSize;
virtual void make_bitmap() SK_OVERRIDE {
fBM.setConfig(SkBitmap::kARGB_8888_Config, int(fTextSize * 8), int(fTextSize * 6));
fBM.allocPixels();
SkCanvas canvas(fBM);
canvas.drawColor(SK_ColorWHITE);
SkPaint paint;
paint.setAntiAlias(true);
paint.setSubpixelText(true);
paint.setTextSize(fTextSize);
setTypeface(&paint, "Times", SkTypeface::kNormal);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 1.2f*fTextSize, paint);
setTypeface(&paint, "Times", SkTypeface::kBold);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 2.4f*fTextSize, paint);
setTypeface(&paint, "Times", SkTypeface::kItalic);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 3.6f*fTextSize, paint);
setTypeface(&paint, "Times", SkTypeface::kBoldItalic);
canvas.drawText("Hamburgefons", 12, fTextSize/2, 4.8f*fTextSize, paint);
}
private:
typedef DownsampleBitmapGM INHERITED;
};
class DownsampleBitmapCheckerboardGM: public DownsampleBitmapGM {
public:
DownsampleBitmapCheckerboardGM(int size, int numChecks, SkPaint::FilterLevel filterLevel)
: INHERITED(filterLevel), fSize(size), fNumChecks(numChecks)
{
fName.printf("downsamplebitmap_checkerboard_%s_%d_%d", this->filterLevelToString(), fSize, fNumChecks);
}
protected:
int fSize;
int fNumChecks;
virtual void make_bitmap() SK_OVERRIDE {
fBM.setConfig(SkBitmap::kARGB_8888_Config, fSize, fSize);
fBM.allocPixels();
SkAutoLockPixels lock(fBM);
for (int y = 0; y < fSize; ++y) {
for (int x = 0; x < fSize; ++x) {
SkPMColor* s = fBM.getAddr32(x, y);
int cx = (x * fNumChecks) / fSize;
int cy = (y * fNumChecks) / fSize;
if ((cx+cy)%2) {
*s = 0xFFFFFFFF;
} else {
*s = 0xFF000000;
}
}
}
}
private:
typedef DownsampleBitmapGM INHERITED;
};
class DownsampleBitmapImageGM: public DownsampleBitmapGM {
public:
DownsampleBitmapImageGM(const char filename[], SkPaint::FilterLevel filterLevel)
: INHERITED(filterLevel), fFilename(filename)
{
fName.printf("downsamplebitmap_image_%s_%s", this->filterLevelToString(), filename);
}
protected:
SkString fFilename;
int fSize;
virtual void make_bitmap() SK_OVERRIDE {
SkString path(skiagm::GM::gResourcePath);
path.append("/");
path.append(fFilename);
SkImageDecoder *codec = NULL;
SkFILEStream stream(path.c_str());
if (stream.isValid()) {
codec = SkImageDecoder::Factory(&stream);
}
if (codec) {
stream.rewind();
codec->decode(&stream, &fBM, SkBitmap::kARGB_8888_Config,
SkImageDecoder::kDecodePixels_Mode);
SkDELETE(codec);
} else {
fBM.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
fBM.allocPixels();
*(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
}
fSize = fBM.height();
}
private:
typedef DownsampleBitmapGM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kHigh_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kHigh_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kHigh_FilterLevel); )
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kMedium_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kMedium_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kMedium_FilterLevel); )
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kLow_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kLow_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kLow_FilterLevel); )
DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kNone_FilterLevel); )
DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kNone_FilterLevel); )
DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kNone_FilterLevel); )
|
