1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "SampleCode.h"
9 #include "SkView.h"
10 #include "SkCanvas.h"
11 #include "SkGradientShader.h"
12 #include "SkGraphics.h"
13 #include "SkImageDecoder.h"
14 #include "SkPath.h"
15 #include "SkRegion.h"
16 #include "SkShader.h"
17 #include "SkUtils.h"
18 #include "SkXfermode.h"
19 #include "SkColorPriv.h"
20 #include "SkColorFilter.h"
21 #include "SkTime.h"
22 #include "SkTypeface.h"
23
24 #include "SkImageRef_GlobalPool.h"
25 #include "SkStream.h"
26
27 static const char* gNames[] = {
28 "1.bmp", "1.gif", "1.jpg", "1.png",
29 "2.bmp", "2.gif", "2.jpg", "2.png"
30 };
31
SetImageRef(SkBitmap * bitmap,SkStream * stream,SkBitmap::Config pref,const char name[]=NULL)32 static bool SetImageRef(SkBitmap* bitmap, SkStream* stream,
33 SkBitmap::Config pref, const char name[] = NULL)
34 {
35 if (SkImageDecoder::DecodeStream(stream, bitmap, pref,
36 SkImageDecoder::kDecodeBounds_Mode, NULL)) {
37 SkASSERT(bitmap->config() != SkBitmap::kNo_Config);
38
39 SkImageRef* ref = new SkImageRef_GlobalPool(stream, bitmap->config());
40 ref->setURI(name);
41 bitmap->setPixelRef(ref)->unref();
42 return true;
43 } else {
44 return false;
45 }
46 }
47
48 class ImageView : public SkView {
49 public:
50 SkBitmap* fBitmaps;
51 SkShader* fShader;
52
ImageView()53 ImageView() {
54 SkImageRef_GlobalPool::SetRAMBudget(32 * 1024);
55
56 int i, N = SK_ARRAY_COUNT(gNames);
57 fBitmaps = new SkBitmap[N];
58
59 for (i = 0; i < N; i++) {
60 SkString str("/skimages/");
61 str.append(gNames[i]);
62 SkFILEStream* stream = new SkFILEStream(str.c_str());
63
64 SetImageRef(&fBitmaps[i], stream, SkBitmap::kNo_Config, gNames[i]);
65 if (i & 1)
66 fBitmaps[i].buildMipMap();
67 stream->unref();
68 }
69
70 fShader = SkShader::CreateBitmapShader(fBitmaps[5],
71 SkShader::kRepeat_TileMode,
72 SkShader::kRepeat_TileMode);
73
74 if (true) {
75 SkMatrix m;
76
77 m.setRotate(SkIntToScalar(30));
78 fShader->setLocalMatrix(m);
79 }
80
81 #if 0
82 SkImageRef::DumpPool();
83 for (i = 0; i < N; i++) {
84 SkBitmap& bm = fBitmaps[i];
85
86 SkDebugf("<%s> addr=%p", gNames[i], bm.getPixels());
87 bool success = bm.lockPixels();
88 SkDebugf(" addr=%d", bm.getPixels());
89 if (success)
90 bm.unlockPixels();
91 SkDebugf(" addr=%p", bm.getPixels());
92 success = bm.lockPixels();
93 SkDebugf(" addr=%d", bm.getPixels());
94 if (success)
95 bm.unlockPixels();
96 SkDebugf("\n");
97 }
98 SkImageRef::DumpPool();
99 #endif
100 }
101
~ImageView()102 virtual ~ImageView() {
103 delete[] fBitmaps;
104 delete fShader;
105
106 SkImageRef_GlobalPool::DumpPool();
107 }
108
109 protected:
110 // overrides from SkEventSink
onQuery(SkEvent * evt)111 virtual bool onQuery(SkEvent* evt) {
112 if (SampleCode::TitleQ(*evt)) {
113 SampleCode::TitleR(evt, "Image");
114 return true;
115 }
116 return this->INHERITED::onQuery(evt);
117 }
118
drawBG(SkCanvas * canvas)119 void drawBG(SkCanvas* canvas) {
120 canvas->drawColor(0xFFDDDDDD);
121 // canvas->drawColor(SK_ColorWHITE);
122 }
123
onDraw(SkCanvas * canvas)124 virtual void onDraw(SkCanvas* canvas) {
125 this->drawBG(canvas);
126
127 canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
128
129 SkScalar x = 0, y = 0;
130
131 for (size_t i = 0; i < SK_ARRAY_COUNT(gNames); i++) {
132 canvas->drawBitmap(fBitmaps[i], x, y);
133 x += SkIntToScalar(fBitmaps[i].width() + 10);
134 }
135
136 canvas->translate(0, SkIntToScalar(120));
137
138 SkPaint paint;
139 paint.setShader(fShader);
140 paint.setFilterBitmap(true);
141 SkRect r = { 0, 0, SkIntToScalar(300), SkIntToScalar(100) };
142
143 canvas->drawRect(r, paint);
144 }
145
onFindClickHandler(SkScalar x,SkScalar y)146 virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
147 this->inval(NULL);
148 return this->INHERITED::onFindClickHandler(x, y);
149 }
150
onClick(Click * click)151 virtual bool onClick(Click* click) {
152 return this->INHERITED::onClick(click);
153 }
154
155 private:
156 typedef SkView INHERITED;
157 };
158
159 //////////////////////////////////////////////////////////////////////////////
160
MyFactory()161 static SkView* MyFactory() { return new ImageView; }
162 static SkViewRegister reg(MyFactory);
163
164