1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "gm.h"
9
10 #include "Resources.h"
11 #include "SampleCode.h"
12 #include "SkCanvas.h"
13 #include "SkColorFilter.h"
14 #include "SkColorPriv.h"
15 #include "SkData.h"
16 #include "SkImageGenerator.h"
17 #include "SkDumpCanvas.h"
18 #include "SkGradientShader.h"
19 #include "SkGraphics.h"
20 #include "SkImageDecoder.h"
21 #include "SkOSFile.h"
22 #include "SkPath.h"
23 #include "SkPicture.h"
24 #include "SkPictureRecorder.h"
25 #include "SkRandom.h"
26 #include "SkRegion.h"
27 #include "SkShader.h"
28 #include "SkStream.h"
29 #include "SkTime.h"
30 #include "SkTypeface.h"
31 #include "SkUtils.h"
32 #include "SkView.h"
33 #include "SkXMLParser.h"
34 #include "SkXfermode.h"
35
36 ///////////////////////////////////////////////////////////////////////////////
37
load_bitmap()38 static SkBitmap load_bitmap() {
39 SkBitmap bm;
40 SkString pngFilename = GetResourcePath("mandrill_512.png");
41 SkAutoDataUnref data(SkData::NewFromFileName(pngFilename.c_str()));
42 if (data.get() != NULL) {
43 SkInstallDiscardablePixelRef(data, &bm);
44 }
45 return bm;
46 }
47
drawCircle(SkCanvas * canvas,int r,SkColor color)48 static void drawCircle(SkCanvas* canvas, int r, SkColor color) {
49 SkPaint paint;
50 paint.setAntiAlias(true);
51 paint.setColor(color);
52
53 canvas->drawCircle(SkIntToScalar(r), SkIntToScalar(r), SkIntToScalar(r),
54 paint);
55 }
56
57 class PictureView : public SampleView {
58 SkBitmap fBitmap;
59 public:
PictureView()60 PictureView() {
61
62 fBitmap = load_bitmap();
63
64 SkPictureRecorder recorder;
65
66 recorder.beginRecording(100, 100, NULL, 0);
67 fSubPicture = recorder.endRecording();
68
69 SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
70 SkPaint paint;
71 paint.setAntiAlias(true);
72
73 canvas->drawBitmap(fBitmap, 0, 0, NULL);
74
75 drawCircle(canvas, 50, SK_ColorBLACK);
76 canvas->drawPicture(fSubPicture);
77 canvas->translate(SkIntToScalar(50), 0);
78 canvas->drawPicture(fSubPicture);
79 canvas->translate(0, SkIntToScalar(50));
80 canvas->drawPicture(fSubPicture);
81 canvas->translate(SkIntToScalar(-50), 0);
82 canvas->drawPicture(fSubPicture);
83
84 fPicture = recorder.endRecording();
85
86 // fPicture now has (4) references to fSubPicture. We can release our ref,
87 // and just unref fPicture in our destructor, and it will in turn take care of
88 // the other references to fSubPicture
89 fSubPicture->unref();
90 }
91
~PictureView()92 virtual ~PictureView() {
93 fPicture->unref();
94 }
95
96 protected:
97 // overrides from SkEventSink
onQuery(SkEvent * evt)98 bool onQuery(SkEvent* evt) override {
99 if (SampleCode::TitleQ(*evt)) {
100 SampleCode::TitleR(evt, "Picture");
101 return true;
102 }
103 return this->INHERITED::onQuery(evt);
104 }
105
drawSomething(SkCanvas * canvas)106 void drawSomething(SkCanvas* canvas) {
107 SkPaint paint;
108
109 canvas->save();
110 canvas->scale(0.5f, 0.5f);
111 canvas->drawBitmap(fBitmap, 0, 0, NULL);
112 canvas->restore();
113
114 paint.setAntiAlias(true);
115
116 paint.setColor(SK_ColorRED);
117 canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
118 SkIntToScalar(40), paint);
119 paint.setColor(SK_ColorBLACK);
120 paint.setTextSize(SkIntToScalar(40));
121 canvas->drawText("Picture", 7, SkIntToScalar(50), SkIntToScalar(62),
122 paint);
123
124 }
125
onDrawContent(SkCanvas * canvas)126 void onDrawContent(SkCanvas* canvas) override {
127 this->drawSomething(canvas);
128
129 SkPictureRecorder recorder;
130 this->drawSomething(recorder.beginRecording(100, 100, NULL, 0));
131 SkAutoTUnref<SkPicture> pict(recorder.endRecording());
132
133 canvas->save();
134 canvas->translate(SkIntToScalar(300), SkIntToScalar(50));
135 canvas->scale(-SK_Scalar1, -SK_Scalar1);
136 canvas->translate(-SkIntToScalar(100), -SkIntToScalar(50));
137 canvas->drawPicture(pict);
138 canvas->restore();
139
140 canvas->save();
141 canvas->translate(SkIntToScalar(200), SkIntToScalar(150));
142 canvas->scale(SK_Scalar1, -SK_Scalar1);
143 canvas->translate(0, -SkIntToScalar(50));
144 canvas->drawPicture(pict);
145 canvas->restore();
146
147 canvas->save();
148 canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
149 canvas->scale(-SK_Scalar1, SK_Scalar1);
150 canvas->translate(-SkIntToScalar(100), 0);
151 canvas->drawPicture(pict);
152 canvas->restore();
153 }
154
155 private:
156 #define INVAL_ALL_TYPE "inval-all"
157
delayInval(SkMSec delay)158 void delayInval(SkMSec delay) {
159 (new SkEvent(INVAL_ALL_TYPE, this->getSinkID()))->postDelay(delay);
160 }
161
onEvent(const SkEvent & evt)162 bool onEvent(const SkEvent& evt) override {
163 if (evt.isType(INVAL_ALL_TYPE)) {
164 this->inval(NULL);
165 return true;
166 }
167 return this->INHERITED::onEvent(evt);
168 }
169
170 SkPicture* fPicture;
171 SkPicture* fSubPicture;
172
173 typedef SampleView INHERITED;
174 };
175
176 //////////////////////////////////////////////////////////////////////////////
177
MyFactory()178 static SkView* MyFactory() { return new PictureView; }
179 static SkViewRegister reg(MyFactory);
180