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
|
/*
* 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 "SampleCode.h"
#include "SkData.h"
#include "SkDecodingImageGenerator.h"
#include "SkDumpCanvas.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkOSFile.h"
#include "SkPath.h"
#include "SkPicture.h"
#include "SkRandom.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
#include "SkTypeface.h"
#include "SkXfermode.h"
#include "SkStream.h"
#include "SkXMLParser.h"
#include "gm.h"
///////////////////////////////////////////////////////////////////////////////
static SkBitmap load_bitmap() {
SkBitmap bm;
SkString directory = skiagm::GM::GetResourcePath();
SkString path = SkOSPath::SkPathJoin(directory.c_str(), "mandrill_512.png");
SkAutoDataUnref data(SkData::NewFromFileName(path.c_str()));
if (data.get() != NULL) {
SkInstallDiscardablePixelRef(SkDecodingImageGenerator::Create(
data, SkDecodingImageGenerator::Options()), &bm, NULL);
}
return bm;
}
static void drawCircle(SkCanvas* canvas, int r, SkColor color) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(color);
canvas->drawCircle(SkIntToScalar(r), SkIntToScalar(r), SkIntToScalar(r),
paint);
}
class PictureView : public SampleView {
SkBitmap fBitmap;
public:
PictureView() {
fBitmap = load_bitmap();
fPicture = new SkPicture;
SkCanvas* canvas = fPicture->beginRecording(100, 100);
SkPaint paint;
paint.setAntiAlias(true);
canvas->drawBitmap(fBitmap, 0, 0, NULL);
drawCircle(canvas, 50, SK_ColorBLACK);
fSubPicture = new SkPicture;
canvas->drawPicture(*fSubPicture);
canvas->translate(SkIntToScalar(50), 0);
canvas->drawPicture(*fSubPicture);
canvas->translate(0, SkIntToScalar(50));
canvas->drawPicture(*fSubPicture);
canvas->translate(SkIntToScalar(-50), 0);
canvas->drawPicture(*fSubPicture);
// fPicture now has (4) references to us. We can release ours, and just
// unref fPicture in our destructor, and it will in turn take care of
// the other references to fSubPicture
fSubPicture->unref();
}
virtual ~PictureView() {
fPicture->unref();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Picture");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawSomething(SkCanvas* canvas) {
SkPaint paint;
canvas->save();
canvas->scale(0.5f, 0.5f);
canvas->drawBitmap(fBitmap, 0, 0, NULL);
canvas->restore();
const char beforeStr[] = "before circle";
const char afterStr[] = "after circle";
paint.setAntiAlias(true);
paint.setColor(SK_ColorRED);
canvas->drawData(beforeStr, sizeof(beforeStr));
canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
SkIntToScalar(40), paint);
canvas->drawData(afterStr, sizeof(afterStr));
paint.setColor(SK_ColorBLACK);
paint.setTextSize(SkIntToScalar(40));
canvas->drawText("Picture", 7, SkIntToScalar(50), SkIntToScalar(62),
paint);
}
virtual void onDrawContent(SkCanvas* canvas) {
drawSomething(canvas);
SkPicture* pict = new SkPicture;
SkAutoUnref aur(pict);
drawSomething(pict->beginRecording(100, 100));
pict->endRecording();
canvas->save();
canvas->translate(SkIntToScalar(300), SkIntToScalar(50));
canvas->scale(-SK_Scalar1, -SK_Scalar1);
canvas->translate(-SkIntToScalar(100), -SkIntToScalar(50));
canvas->drawPicture(*pict);
canvas->restore();
canvas->save();
canvas->translate(SkIntToScalar(200), SkIntToScalar(150));
canvas->scale(SK_Scalar1, -SK_Scalar1);
canvas->translate(0, -SkIntToScalar(50));
canvas->drawPicture(*pict);
canvas->restore();
canvas->save();
canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
canvas->scale(-SK_Scalar1, SK_Scalar1);
canvas->translate(-SkIntToScalar(100), 0);
canvas->drawPicture(*pict);
canvas->restore();
#ifdef SK_DEVELOPER
if (false) {
SkDebugfDumper dumper;
SkDumpCanvas dumpCanvas(&dumper);
dumpCanvas.drawPicture(*pict);
}
#endif
// test that we can re-record a subpicture, and see the results
SkRandom rand(SampleCode::GetAnimTime());
canvas->translate(SkIntToScalar(10), SkIntToScalar(250));
drawCircle(fSubPicture->beginRecording(50, 50), 25,
rand.nextU() | 0xFF000000);
canvas->drawPicture(*fPicture);
delayInval(500);
}
private:
#define INVAL_ALL_TYPE "inval-all"
void delayInval(SkMSec delay) {
(new SkEvent(INVAL_ALL_TYPE, this->getSinkID()))->postDelay(delay);
}
virtual bool onEvent(const SkEvent& evt) {
if (evt.isType(INVAL_ALL_TYPE)) {
this->inval(NULL);
return true;
}
return this->INHERITED::onEvent(evt);
}
SkPicture* fPicture;
SkPicture* fSubPicture;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new PictureView; }
static SkViewRegister reg(MyFactory);
|
