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 "gm.h" 9 #include "SkPath.h" 10 #include "SkRegion.h" 11 #include "SkShader.h" 12 #include "SkUtils.h" 13 #include "SkColorPriv.h" 14 #include "SkColorFilter.h" 15 #include "SkTypeface.h" 16 17 // effects 18 #include "SkGradientShader.h" 19 #include "SkUnitMappers.h" 20 #include "SkBlurDrawLooper.h" 21 22 static void makebm(SkBitmap* bm, SkBitmap::Config config, int w, int h) { 23 bm->setConfig(config, w, h); 24 bm->allocPixels(); 25 bm->eraseColor(SK_ColorTRANSPARENT); 26 27 SkCanvas canvas(*bm); 28 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; 29 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 30 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; 31 SkPaint paint; 32 33 SkUnitMapper* um = NULL; 34 35 um = new SkCosineMapper; 36 // um = new SkDiscreteMapper(12); 37 38 SkAutoUnref au(um); 39 40 paint.setDither(true); 41 paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos, 42 SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref(); 43 canvas.drawPaint(paint); 44 } 45 46 static void setup(SkPaint* paint, const SkBitmap& bm, bool filter, 47 SkShader::TileMode tmx, SkShader::TileMode tmy) { 48 SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); 49 paint->setShader(shader)->unref(); 50 paint->setFilterBitmap(filter); 51 } 52 53 static const SkBitmap::Config gConfigs[] = { 54 SkBitmap::kARGB_8888_Config, 55 SkBitmap::kRGB_565_Config, 56 SkBitmap::kARGB_4444_Config 57 }; 58 static const int gWidth = 32; 59 static const int gHeight = 32; 60 61 class TilingGM : public skiagm::GM { 62 SkBlurDrawLooper fLooper; 63 public: 64 TilingGM() 65 : fLooper(SkIntToScalar(1), SkIntToScalar(2), SkIntToScalar(2), 66 0x88000000) { 67 } 68 69 SkBitmap fTexture[SK_ARRAY_COUNT(gConfigs)]; 70 71 protected: 72 SkString onShortName() { 73 return SkString("tilemodes"); 74 } 75 76 SkISize onISize() { return SkISize::Make(880, 560); } 77 78 virtual void onOnceBeforeDraw() SK_OVERRIDE { 79 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 80 makebm(&fTexture[i], gConfigs[i], gWidth, gHeight); 81 } 82 } 83 84 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { 85 86 SkRect r = { 0, 0, SkIntToScalar(gWidth*2), SkIntToScalar(gHeight*2) }; 87 88 static const char* gConfigNames[] = { "8888", "565", "4444" }; 89 90 static const bool gFilters[] = { false, true }; 91 static const char* gFilterNames[] = { "point", "bilinear" }; 92 93 static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 94 static const char* gModeNames[] = { "C", "R", "M" }; 95 96 SkScalar y = SkIntToScalar(24); 97 SkScalar x = SkIntToScalar(10); 98 99 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 100 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 101 SkPaint p; 102 SkString str; 103 p.setAntiAlias(true); 104 p.setDither(true); 105 p.setLooper(&fLooper); 106 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 107 108 p.setTextAlign(SkPaint::kCenter_Align); 109 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 110 111 x += r.width() * 4 / 3; 112 } 113 } 114 115 y += SkIntToScalar(16); 116 117 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 118 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) { 119 x = SkIntToScalar(10); 120 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 121 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 122 SkPaint paint; 123 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]); 124 paint.setDither(true); 125 126 canvas->save(); 127 canvas->translate(x, y); 128 canvas->drawRect(r, paint); 129 canvas->restore(); 130 131 x += r.width() * 4 / 3; 132 } 133 } 134 { 135 SkPaint p; 136 SkString str; 137 p.setAntiAlias(true); 138 p.setLooper(&fLooper); 139 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); 140 canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p); 141 } 142 143 y += r.height() * 4 / 3; 144 } 145 } 146 } 147 148 private: 149 typedef skiagm::GM INHERITED; 150 }; 151 152 static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) { 153 SkBitmap bm; 154 makebm(&bm, SkBitmap::kARGB_8888_Config, gWidth, gHeight); 155 return SkShader::CreateBitmapShader(bm, tx, ty); 156 } 157 158 static SkShader* make_grad(SkShader::TileMode tx, SkShader::TileMode ty) { 159 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} }; 160 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 }; 161 SkScalar rad = SkIntToScalar(gWidth)/2; 162 SkColor colors[] = { 0xFFFF0000, 0xFF0044FF }; 163 164 int index = (int)ty; 165 switch (index % 3) { 166 case 0: 167 return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors), tx); 168 case 1: 169 return SkGradientShader::CreateRadial(center, rad, colors, NULL, SK_ARRAY_COUNT(colors), tx); 170 case 2: 171 return SkGradientShader::CreateSweep(center.fX, center.fY, colors, NULL, SK_ARRAY_COUNT(colors)); 172 } 173 174 return NULL; 175 } 176 177 typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode); 178 179 class Tiling2GM : public skiagm::GM { 180 ShaderProc fProc; 181 SkString fName; 182 public: 183 Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc) { 184 fName.printf("tilemode_%s", name); 185 } 186 187 protected: 188 SkString onShortName() { 189 return fName; 190 } 191 192 SkISize onISize() { return SkISize::Make(880, 560); } 193 194 virtual void onDraw(SkCanvas* canvas) { 195 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2); 196 197 const SkScalar w = SkIntToScalar(gWidth); 198 const SkScalar h = SkIntToScalar(gHeight); 199 SkRect r = { -w, -h, w*2, h*2 }; 200 201 static const SkShader::TileMode gModes[] = { 202 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode 203 }; 204 static const char* gModeNames[] = { 205 "Clamp", "Repeat", "Mirror" 206 }; 207 208 SkScalar y = SkIntToScalar(24); 209 SkScalar x = SkIntToScalar(66); 210 211 SkPaint p; 212 p.setAntiAlias(true); 213 p.setTextAlign(SkPaint::kCenter_Align); 214 215 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 216 SkString str(gModeNames[kx]); 217 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 218 x += r.width() * 4 / 3; 219 } 220 221 y += SkIntToScalar(16) + h; 222 p.setTextAlign(SkPaint::kRight_Align); 223 224 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 225 x = SkIntToScalar(16) + w; 226 227 SkString str(gModeNames[ky]); 228 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p); 229 230 x += SkIntToScalar(50); 231 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 232 SkPaint paint; 233 paint.setShader(fProc(gModes[kx], gModes[ky]))->unref(); 234 235 canvas->save(); 236 canvas->translate(x, y); 237 canvas->drawRect(r, paint); 238 canvas->restore(); 239 240 x += r.width() * 4 / 3; 241 } 242 y += r.height() * 4 / 3; 243 } 244 } 245 246 private: 247 typedef skiagm::GM INHERITED; 248 }; 249 250 ////////////////////////////////////////////////////////////////////////////// 251 252 static skiagm::GM* MyFactory(void*) { return new TilingGM; } 253 static skiagm::GMRegistry reg(MyFactory); 254 255 static skiagm::GM* MyFactory2(void*) { return new Tiling2GM(make_bm, "bitmap"); } 256 static skiagm::GMRegistry reg2(MyFactory2); 257 258 static skiagm::GM* MyFactory3(void*) { return new Tiling2GM(make_grad, "gradient"); } 259 static skiagm::GMRegistry reg3(MyFactory3); 260
