1 #include "gm.h" 2 #include "SkPath.h" 3 #include "SkRegion.h" 4 #include "SkShader.h" 5 #include "SkUtils.h" 6 #include "SkColorPriv.h" 7 #include "SkColorFilter.h" 8 #include "SkTypeface.h" 9 10 // effects 11 #include "SkGradientShader.h" 12 #include "SkUnitMappers.h" 13 #include "SkBlurDrawLooper.h" 14 15 namespace skiagm { 16 17 static void makebm(SkBitmap* bm, SkBitmap::Config config, int w, int h) { 18 bm->setConfig(config, w, h); 19 bm->allocPixels(); 20 bm->eraseColor(0); 21 22 SkCanvas canvas(*bm); 23 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} }; 24 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 25 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; 26 SkPaint paint; 27 28 SkUnitMapper* um = NULL; 29 30 um = new SkCosineMapper; 31 // um = new SkDiscreteMapper(12); 32 33 SkAutoUnref au(um); 34 35 paint.setDither(true); 36 paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos, 37 SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref(); 38 canvas.drawPaint(paint); 39 } 40 41 static void setup(SkPaint* paint, const SkBitmap& bm, bool filter, 42 SkShader::TileMode tmx, SkShader::TileMode tmy) { 43 SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy); 44 paint->setShader(shader)->unref(); 45 paint->setFilterBitmap(filter); 46 } 47 48 static const SkBitmap::Config gConfigs[] = { 49 SkBitmap::kARGB_8888_Config, 50 SkBitmap::kRGB_565_Config, 51 SkBitmap::kARGB_4444_Config 52 }; 53 static const int gWidth = 32; 54 static const int gHeight = 32; 55 56 class TilingGM : public GM { 57 SkBlurDrawLooper fLooper; 58 public: 59 TilingGM() 60 : fLooper(SkIntToScalar(1), SkIntToScalar(2), SkIntToScalar(2), 61 0x88000000) { 62 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 63 makebm(&fTexture[i], gConfigs[i], gWidth, gHeight); 64 } 65 } 66 67 SkBitmap fTexture[SK_ARRAY_COUNT(gConfigs)]; 68 69 protected: 70 SkString onShortName() { 71 return SkString("tilemodes"); 72 } 73 74 SkISize onISize() { return make_isize(880, 560); } 75 76 void drawBG(SkCanvas* canvas) { 77 canvas->drawColor(SK_ColorWHITE); 78 } 79 80 virtual void onDraw(SkCanvas* canvas) { 81 this->drawBG(canvas); 82 83 SkRect r = { 0, 0, SkIntToScalar(gWidth*2), SkIntToScalar(gHeight*2) }; 84 85 static const char* gConfigNames[] = { "8888", "565", "4444" }; 86 87 static const bool gFilters[] = { false, true }; 88 static const char* gFilterNames[] = { "point", "bilinear" }; 89 90 static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode }; 91 static const char* gModeNames[] = { "C", "R", "M" }; 92 93 SkScalar y = SkIntToScalar(24); 94 SkScalar x = SkIntToScalar(10); 95 96 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 97 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 98 SkPaint p; 99 SkString str; 100 p.setAntiAlias(true); 101 p.setDither(true); 102 p.setLooper(&fLooper); 103 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]); 104 105 p.setTextAlign(SkPaint::kCenter_Align); 106 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p); 107 108 x += r.width() * 4 / 3; 109 } 110 } 111 112 y += SkIntToScalar(16); 113 114 for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) { 115 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) { 116 x = SkIntToScalar(10); 117 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) { 118 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) { 119 SkPaint paint; 120 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]); 121 paint.setDither(true); 122 123 canvas->save(); 124 canvas->translate(x, y); 125 canvas->drawRect(r, paint); 126 canvas->restore(); 127 128 x += r.width() * 4 / 3; 129 } 130 } 131 { 132 SkPaint p; 133 SkString str; 134 p.setAntiAlias(true); 135 p.setLooper(&fLooper); 136 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]); 137 canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p); 138 } 139 140 y += r.height() * 4 / 3; 141 } 142 } 143 } 144 145 private: 146 typedef GM INHERITED; 147 }; 148 149 ////////////////////////////////////////////////////////////////////////////// 150 151 static GM* MyFactory(void*) { return new TilingGM; } 152 static GMRegistry reg(MyFactory); 153 154 } 155 156
