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 #include "SkSurface.h"
10 #include "SkCanvas.h"
11 #include "SkStream.h"
12 #include "SkData.h"
13
14 #if SK_SUPPORT_GPU
15 #include "GrContext.h"
16 #endif
17
fileToData(const char path[])18 static SkData* fileToData(const char path[]) {
19 SkFILEStream stream(path);
20 if (!stream.isValid()) {
21 return SkData::NewEmpty();
22 }
23 size_t size = stream.getLength();
24 void* mem = sk_malloc_throw(size);
25 stream.read(mem, size);
26 return SkData::NewFromMalloc(mem, size);
27 }
28
drawJpeg(SkCanvas * canvas,const SkISize & size)29 static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
30 // TODO: Make this draw a file that is checked in, so it can
31 // be exercised on machines other than mike's. Will require a
32 // rebaseline.
33 SkAutoDataUnref data(fileToData("/Users/mike/Downloads/skia.google.jpeg"));
34 SkImage* image = SkImage::NewEncodedData(data);
35 if (image) {
36 SkAutoCanvasRestore acr(canvas, true);
37 canvas->scale(size.width() * 1.0f / image->width(),
38 size.height() * 1.0f / image->height());
39 image->draw(canvas, 0, 0, NULL);
40 image->unref();
41 }
42 }
43
drawContents(SkSurface * surface,SkColor fillC)44 static void drawContents(SkSurface* surface, SkColor fillC) {
45 SkSize size = SkSize::Make(SkIntToScalar(surface->width()),
46 SkIntToScalar(surface->height()));
47 SkCanvas* canvas = surface->getCanvas();
48
49 SkScalar stroke = size.fWidth / 10;
50 SkScalar radius = (size.fWidth - stroke) / 2;
51
52 SkPaint paint;
53
54 paint.setAntiAlias(true);
55 paint.setColor(fillC);
56 canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
57
58 paint.setStyle(SkPaint::kStroke_Style);
59 paint.setStrokeWidth(stroke);
60 paint.setColor(SK_ColorBLACK);
61 canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint);
62 }
63
test_surface(SkCanvas * canvas,SkSurface * surf,bool usePaint)64 static void test_surface(SkCanvas* canvas, SkSurface* surf, bool usePaint) {
65 drawContents(surf, SK_ColorRED);
66 SkImage* imgR = surf->newImageSnapshot();
67
68 if (true) {
69 SkImage* imgR2 = surf->newImageSnapshot();
70 SkASSERT(imgR == imgR2);
71 imgR2->unref();
72 }
73
74 drawContents(surf, SK_ColorGREEN);
75 SkImage* imgG = surf->newImageSnapshot();
76
77 // since we've drawn after we snapped imgR, imgG will be a different obj
78 SkASSERT(imgR != imgG);
79
80 drawContents(surf, SK_ColorBLUE);
81
82 SkPaint paint;
83 // paint.setFilterBitmap(true);
84 // paint.setAlpha(0x80);
85
86 imgR->draw(canvas, 0, 0, usePaint ? &paint : NULL);
87 imgG->draw(canvas, 0, 80, usePaint ? &paint : NULL);
88 surf->draw(canvas, 0, 160, usePaint ? &paint : NULL);
89
90 SkRect src1, src2, src3;
91 src1.iset(0, 0, surf->width(), surf->height());
92 src2.iset(-surf->width() / 2, -surf->height() / 2,
93 surf->width(), surf->height());
94 src3.iset(0, 0, surf->width() / 2, surf->height() / 2);
95
96 SkRect dst1, dst2, dst3, dst4;
97 dst1.set(0, 240, 65, 305);
98 dst2.set(0, 320, 65, 385);
99 dst3.set(0, 400, 65, 465);
100 dst4.set(0, 480, 65, 545);
101
102 imgR->draw(canvas, &src1, dst1, usePaint ? &paint : NULL);
103 imgG->draw(canvas, &src2, dst2, usePaint ? &paint : NULL);
104 imgR->draw(canvas, &src3, dst3, usePaint ? &paint : NULL);
105 imgG->draw(canvas, NULL, dst4, usePaint ? &paint : NULL);
106
107 imgG->unref();
108 imgR->unref();
109 }
110
111 class ImageGM : public skiagm::GM {
112 void* fBuffer;
113 size_t fBufferSize;
114 SkSize fSize;
115 enum {
116 W = 64,
117 H = 64,
118 RB = W * 4 + 8,
119 };
120 public:
ImageGM()121 ImageGM() {
122 fBufferSize = RB * H;
123 fBuffer = sk_malloc_throw(fBufferSize);
124 fSize.set(SkIntToScalar(W), SkIntToScalar(H));
125 }
126
~ImageGM()127 virtual ~ImageGM() {
128 sk_free(fBuffer);
129 }
130
131
132 protected:
onShortName()133 virtual SkString onShortName() {
134 return SkString("image-surface");
135 }
136
onISize()137 virtual SkISize onISize() {
138 return SkISize::Make(960, 1200);
139 }
140
onDraw(SkCanvas * canvas)141 virtual void onDraw(SkCanvas* canvas) {
142 drawJpeg(canvas, this->getISize());
143
144 canvas->scale(2, 2);
145
146 static const char* kLabel1 = "Original Img";
147 static const char* kLabel2 = "Modified Img";
148 static const char* kLabel3 = "Cur Surface";
149 static const char* kLabel4 = "Full Crop";
150 static const char* kLabel5 = "Over-crop";
151 static const char* kLabel6 = "Upper-left";
152 static const char* kLabel7 = "No Crop";
153
154 static const char* kLabel8 = "Pre-Alloc Img";
155 static const char* kLabel9 = "New Alloc Img";
156 static const char* kLabel10 = "SkPicture";
157 static const char* kLabel11 = "Null Paint";
158 static const char* kLabel12 = "GPU";
159
160 SkPaint textPaint;
161
162 canvas->drawText(kLabel1, strlen(kLabel1), 10, 60, textPaint);
163 canvas->drawText(kLabel2, strlen(kLabel2), 10, 140, textPaint);
164 canvas->drawText(kLabel3, strlen(kLabel3), 10, 220, textPaint);
165 canvas->drawText(kLabel4, strlen(kLabel4), 10, 300, textPaint);
166 canvas->drawText(kLabel5, strlen(kLabel5), 10, 380, textPaint);
167 canvas->drawText(kLabel6, strlen(kLabel6), 10, 460, textPaint);
168 canvas->drawText(kLabel7, strlen(kLabel7), 10, 540, textPaint);
169
170 canvas->drawText(kLabel8, strlen(kLabel8), 80, 10, textPaint);
171 canvas->drawText(kLabel9, strlen(kLabel9), 160, 10, textPaint);
172 canvas->drawText(kLabel10, strlen(kLabel10), 250, 10, textPaint);
173 canvas->drawText(kLabel11, strlen(kLabel11), 320, 10, textPaint);
174 canvas->drawText(kLabel12, strlen(kLabel12), 410, 10, textPaint);
175
176 canvas->translate(80, 20);
177
178 // since we draw into this directly, we need to start fresh
179 sk_bzero(fBuffer, fBufferSize);
180
181 SkImageInfo info = {
182 W, H, kPMColor_SkColorType, kPremul_SkAlphaType
183 };
184 SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, fBuffer, RB));
185 SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info));
186 SkAutoTUnref<SkSurface> surf2(SkSurface::NewPicture(info.fWidth, info.fHeight));
187 SkAutoTUnref<SkSurface> surf3(SkSurface::NewPicture(info.fWidth, info.fHeight));
188 #if SK_SUPPORT_GPU
189 GrContext* ctx = canvas->getGrContext();
190
191 SkAutoTUnref<SkSurface> surf4(SkSurface::NewRenderTarget(ctx, info, 0));
192 #endif
193
194 test_surface(canvas, surf0, true);
195 canvas->translate(80, 0);
196 test_surface(canvas, surf1, true);
197 canvas->translate(80, 0);
198 test_surface(canvas, surf2, true);
199 canvas->translate(80, 0);
200 test_surface(canvas, surf3, false);
201 #if SK_SUPPORT_GPU
202 if (NULL != ctx) {
203 canvas->translate(80, 0);
204 test_surface(canvas, surf4, true);
205 }
206 #endif
207 }
208
onGetFlags() const209 virtual uint32_t onGetFlags() const SK_OVERRIDE {
210 return GM::kSkipPicture_Flag | GM::kSkipPipe_Flag;
211 }
212
213 private:
214 typedef skiagm::GM INHERITED;
215 };
216
217 //////////////////////////////////////////////////////////////////////////////
218
MyFactory(void *)219 static skiagm::GM* MyFactory(void*) { return new ImageGM; }
220 static skiagm::GMRegistry reg(MyFactory);
221
