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 "SkDecodingImageGenerator.h" 12 #include "SkStream.h" 13 #include "SkData.h" 14 15 #if SK_SUPPORT_GPU 16 #include "GrContext.h" 17 #endif 18 19 static void drawJpeg(SkCanvas* canvas, const SkISize& size) { 20 // TODO: Make this draw a file that is checked in, so it can 21 // be exercised on machines other than mike's. Will require a 22 // rebaseline. 23 SkAutoDataUnref data(SkData::NewFromFileName("/Users/mike/Downloads/skia.google.jpeg")); 24 if (NULL == data.get()) { 25 return; 26 } 27 SkImage* image = SkImage::NewFromGenerator( 28 SkDecodingImageGenerator::Create(data, SkDecodingImageGenerator::Options())); 29 if (image) { 30 SkAutoCanvasRestore acr(canvas, true); 31 canvas->scale(size.width() * 1.0f / image->width(), 32 size.height() * 1.0f / image->height()); 33 canvas->drawImage(image, 0, 0, NULL); 34 image->unref(); 35 } 36 } 37 38 static void drawContents(SkSurface* surface, SkColor fillC) { 39 SkSize size = SkSize::Make(SkIntToScalar(surface->width()), 40 SkIntToScalar(surface->height())); 41 SkCanvas* canvas = surface->getCanvas(); 42 43 SkScalar stroke = size.fWidth / 10; 44 SkScalar radius = (size.fWidth - stroke) / 2; 45 46 SkPaint paint; 47 48 paint.setAntiAlias(true); 49 paint.setColor(fillC); 50 canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint); 51 52 paint.setStyle(SkPaint::kStroke_Style); 53 paint.setStrokeWidth(stroke); 54 paint.setColor(SK_ColorBLACK); 55 canvas->drawCircle(size.fWidth/2, size.fHeight/2, radius, paint); 56 } 57 58 static void test_surface(SkCanvas* canvas, SkSurface* surf, bool usePaint) { 59 drawContents(surf, SK_ColorRED); 60 SkImage* imgR = surf->newImageSnapshot(); 61 62 if (true) { 63 SkImage* imgR2 = surf->newImageSnapshot(); 64 SkASSERT(imgR == imgR2); 65 imgR2->unref(); 66 } 67 68 drawContents(surf, SK_ColorGREEN); 69 SkImage* imgG = surf->newImageSnapshot(); 70 71 // since we've drawn after we snapped imgR, imgG will be a different obj 72 SkASSERT(imgR != imgG); 73 74 drawContents(surf, SK_ColorBLUE); 75 76 SkPaint paint; 77 // paint.setFilterBitmap(true); 78 // paint.setAlpha(0x80); 79 80 canvas->drawImage(imgR, 0, 0, usePaint ? &paint : NULL); 81 canvas->drawImage(imgG, 0, 80, usePaint ? &paint : NULL); 82 surf->draw(canvas, 0, 160, usePaint ? &paint : NULL); 83 84 SkRect src1, src2, src3; 85 src1.iset(0, 0, surf->width(), surf->height()); 86 src2.iset(-surf->width() / 2, -surf->height() / 2, 87 surf->width(), surf->height()); 88 src3.iset(0, 0, surf->width() / 2, surf->height() / 2); 89 90 SkRect dst1, dst2, dst3, dst4; 91 dst1.set(0, 240, 65, 305); 92 dst2.set(0, 320, 65, 385); 93 dst3.set(0, 400, 65, 465); 94 dst4.set(0, 480, 65, 545); 95 96 canvas->drawImageRect(imgR, &src1, dst1, usePaint ? &paint : NULL); 97 canvas->drawImageRect(imgG, &src2, dst2, usePaint ? &paint : NULL); 98 canvas->drawImageRect(imgR, &src3, dst3, usePaint ? &paint : NULL); 99 canvas->drawImageRect(imgG, NULL, dst4, usePaint ? &paint : NULL); 100 101 imgG->unref(); 102 imgR->unref(); 103 } 104 105 class ImageGM : public skiagm::GM { 106 void* fBuffer; 107 size_t fBufferSize; 108 SkSize fSize; 109 enum { 110 W = 64, 111 H = 64, 112 RB = W * 4 + 8, 113 }; 114 public: 115 ImageGM() { 116 fBufferSize = RB * H; 117 fBuffer = sk_malloc_throw(fBufferSize); 118 fSize.set(SkIntToScalar(W), SkIntToScalar(H)); 119 } 120 121 virtual ~ImageGM() { 122 sk_free(fBuffer); 123 } 124 125 126 protected: 127 virtual SkString onShortName() { 128 return SkString("image-surface"); 129 } 130 131 virtual SkISize onISize() { 132 return SkISize::Make(960, 1200); 133 } 134 135 virtual void onDraw(SkCanvas* canvas) { 136 drawJpeg(canvas, this->getISize()); 137 138 canvas->scale(2, 2); 139 140 static const char* kLabel1 = "Original Img"; 141 static const char* kLabel2 = "Modified Img"; 142 static const char* kLabel3 = "Cur Surface"; 143 static const char* kLabel4 = "Full Crop"; 144 static const char* kLabel5 = "Over-crop"; 145 static const char* kLabel6 = "Upper-left"; 146 static const char* kLabel7 = "No Crop"; 147 148 static const char* kLabel8 = "Pre-Alloc Img"; 149 static const char* kLabel9 = "New Alloc Img"; 150 static const char* kLabel10 = "Null Paint"; 151 static const char* kLabel11 = "GPU"; 152 153 SkPaint textPaint; 154 textPaint.setAntiAlias(true); 155 sk_tool_utils::set_portable_typeface(&textPaint); 156 textPaint.setTextSize(8); 157 158 canvas->drawText(kLabel1, strlen(kLabel1), 10, 60, textPaint); 159 canvas->drawText(kLabel2, strlen(kLabel2), 10, 140, textPaint); 160 canvas->drawText(kLabel3, strlen(kLabel3), 10, 220, textPaint); 161 canvas->drawText(kLabel4, strlen(kLabel4), 10, 300, textPaint); 162 canvas->drawText(kLabel5, strlen(kLabel5), 10, 380, textPaint); 163 canvas->drawText(kLabel6, strlen(kLabel6), 10, 460, textPaint); 164 canvas->drawText(kLabel7, strlen(kLabel7), 10, 540, textPaint); 165 166 canvas->drawText(kLabel8, strlen(kLabel8), 80, 10, textPaint); 167 canvas->drawText(kLabel9, strlen(kLabel9), 160, 10, textPaint); 168 canvas->drawText(kLabel10, strlen(kLabel10), 250, 10, textPaint); 169 canvas->drawText(kLabel11, strlen(kLabel11), 320, 10, textPaint); 170 171 canvas->translate(80, 20); 172 173 // since we draw into this directly, we need to start fresh 174 sk_bzero(fBuffer, fBufferSize); 175 176 SkImageInfo info = SkImageInfo::MakeN32Premul(W, H); 177 SkAutoTUnref<SkSurface> surf0(SkSurface::NewRasterDirect(info, fBuffer, RB)); 178 SkAutoTUnref<SkSurface> surf1(SkSurface::NewRaster(info)); 179 #if SK_SUPPORT_GPU 180 GrContext* ctx = canvas->getGrContext(); 181 182 SkAutoTUnref<SkSurface> surf4(SkSurface::NewRenderTarget(ctx, info)); 183 #endif 184 185 test_surface(canvas, surf0, true); 186 canvas->translate(80, 0); 187 test_surface(canvas, surf1, true); 188 #if SK_SUPPORT_GPU 189 if (ctx) { 190 canvas->translate(80, 0); 191 test_surface(canvas, surf4, true); 192 } 193 #endif 194 } 195 196 virtual uint32_t onGetFlags() const SK_OVERRIDE { 197 return GM::kSkipPicture_Flag | GM::kSkipPipe_Flag; 198 } 199 200 private: 201 typedef skiagm::GM INHERITED; 202 }; 203 204 ////////////////////////////////////////////////////////////////////////////// 205 206 static skiagm::GM* MyFactory(void*) { return new ImageGM; } 207 static skiagm::GMRegistry reg(MyFactory); 208
