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 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 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 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 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: 121 ImageGM() { 122 fBufferSize = RB * H; 123 fBuffer = sk_malloc_throw(fBufferSize); 124 fSize.set(SkIntToScalar(W), SkIntToScalar(H)); 125 } 126 127 virtual ~ImageGM() { 128 sk_free(fBuffer); 129 } 130 131 132 protected: 133 virtual SkString onShortName() { 134 return SkString("image-surface"); 135 } 136 137 virtual SkISize onISize() { 138 return SkISize::Make(960, 1200); 139 } 140 141 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 = "Null Paint"; 157 static const char* kLabel11 = "GPU"; 158 159 SkPaint textPaint; 160 textPaint.setAntiAlias(true); 161 textPaint.setTextSize(8); 162 163 canvas->drawText(kLabel1, strlen(kLabel1), 10, 60, textPaint); 164 canvas->drawText(kLabel2, strlen(kLabel2), 10, 140, textPaint); 165 canvas->drawText(kLabel3, strlen(kLabel3), 10, 220, textPaint); 166 canvas->drawText(kLabel4, strlen(kLabel4), 10, 300, textPaint); 167 canvas->drawText(kLabel5, strlen(kLabel5), 10, 380, textPaint); 168 canvas->drawText(kLabel6, strlen(kLabel6), 10, 460, textPaint); 169 canvas->drawText(kLabel7, strlen(kLabel7), 10, 540, textPaint); 170 171 canvas->drawText(kLabel8, strlen(kLabel8), 80, 10, textPaint); 172 canvas->drawText(kLabel9, strlen(kLabel9), 160, 10, textPaint); 173 canvas->drawText(kLabel10, strlen(kLabel10), 250, 10, textPaint); 174 canvas->drawText(kLabel11, strlen(kLabel11), 320, 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 = SkImageInfo::MakeN32Premul(W, H); 182 SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, fBuffer, RB)); 183 SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info)); 184 #if SK_SUPPORT_GPU 185 GrContext* ctx = canvas->getGrContext(); 186 187 SkAutoTUnref<SkSurface> surf4(SkSurface::NewRenderTarget(ctx, info, 0)); 188 #endif 189 190 test_surface(canvas, surf0, true); 191 canvas->translate(80, 0); 192 test_surface(canvas, surf1, true); 193 #if SK_SUPPORT_GPU 194 if (NULL != ctx) { 195 canvas->translate(80, 0); 196 test_surface(canvas, surf4, true); 197 } 198 #endif 199 } 200 201 virtual uint32_t onGetFlags() const SK_OVERRIDE { 202 return GM::kSkipPicture_Flag | GM::kSkipPipe_Flag; 203 } 204 205 private: 206 typedef skiagm::GM INHERITED; 207 }; 208 209 ////////////////////////////////////////////////////////////////////////////// 210 211 static skiagm::GM* MyFactory(void*) { return new ImageGM; } 212 static skiagm::GMRegistry reg(MyFactory); 213
