1 /* 2 * Copyright 2014 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 #include "gm.h" 8 #include "SkBitmap.h" 9 #include "SkGradientShader.h" 10 #include "SkShader.h" 11 #include "SkXfermode.h" 12 #include "../src/fonts/SkGScalerContext.h" 13 14 namespace skiagm { 15 16 static uint16_t gData[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF }; 17 18 class ColorTypeXfermodeGM : public GM { 19 public: 20 const static int W = 64; 21 const static int H = 64; 22 ColorTypeXfermodeGM() 23 : fColorType(nullptr) { 24 } 25 26 virtual ~ColorTypeXfermodeGM() { 27 SkSafeUnref(fColorType); 28 } 29 30 protected: 31 void onOnceBeforeDraw() override { 32 const SkColor colors[] = { 33 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, 34 SK_ColorMAGENTA, SK_ColorCYAN, SK_ColorYELLOW 35 }; 36 SkMatrix local; 37 local.setRotate(180); 38 SkShader* s = SkGradientShader::CreateSweep(0,0, colors, nullptr, 39 SK_ARRAY_COUNT(colors), 0, &local); 40 41 SkPaint paint; 42 paint.setAntiAlias(true); 43 paint.setShader(s)->unref(); 44 45 SkTypeface* orig = sk_tool_utils::create_portable_typeface("serif", 46 SkTypeface::kBold); 47 if (nullptr == orig) { 48 orig = SkTypeface::RefDefault(); 49 } 50 fColorType = new SkGTypeface(orig, paint); 51 orig->unref(); 52 53 fBG.installPixels(SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, 54 kOpaque_SkAlphaType), gData, 4); 55 } 56 57 virtual SkString onShortName() override { 58 return SkString("colortype_xfermodes"); 59 } 60 61 virtual SkISize onISize() override { 62 return SkISize::Make(400, 640); 63 } 64 65 virtual void onDraw(SkCanvas* canvas) override { 66 canvas->translate(SkIntToScalar(10), SkIntToScalar(20)); 67 68 const struct { 69 SkXfermode::Mode fMode; 70 const char* fLabel; 71 } gModes[] = { 72 { SkXfermode::kClear_Mode, "Clear" }, 73 { SkXfermode::kSrc_Mode, "Src" }, 74 { SkXfermode::kDst_Mode, "Dst" }, 75 { SkXfermode::kSrcOver_Mode, "SrcOver" }, 76 { SkXfermode::kDstOver_Mode, "DstOver" }, 77 { SkXfermode::kSrcIn_Mode, "SrcIn" }, 78 { SkXfermode::kDstIn_Mode, "DstIn" }, 79 { SkXfermode::kSrcOut_Mode, "SrcOut" }, 80 { SkXfermode::kDstOut_Mode, "DstOut" }, 81 { SkXfermode::kSrcATop_Mode, "SrcATop" }, 82 { SkXfermode::kDstATop_Mode, "DstATop" }, 83 84 { SkXfermode::kXor_Mode, "Xor" }, 85 { SkXfermode::kPlus_Mode, "Plus" }, 86 { SkXfermode::kModulate_Mode, "Modulate" }, 87 { SkXfermode::kScreen_Mode, "Screen" }, 88 { SkXfermode::kOverlay_Mode, "Overlay" }, 89 { SkXfermode::kDarken_Mode, "Darken" }, 90 { SkXfermode::kLighten_Mode, "Lighten" }, 91 { SkXfermode::kColorDodge_Mode, "ColorDodge" }, 92 { SkXfermode::kColorBurn_Mode, "ColorBurn" }, 93 { SkXfermode::kHardLight_Mode, "HardLight" }, 94 { SkXfermode::kSoftLight_Mode, "SoftLight" }, 95 { SkXfermode::kDifference_Mode, "Difference" }, 96 { SkXfermode::kExclusion_Mode, "Exclusion" }, 97 { SkXfermode::kMultiply_Mode, "Multiply" }, 98 { SkXfermode::kHue_Mode, "Hue" }, 99 { SkXfermode::kSaturation_Mode, "Saturation" }, 100 { SkXfermode::kColor_Mode, "Color" }, 101 { SkXfermode::kLuminosity_Mode, "Luminosity" }, 102 }; 103 104 const SkScalar w = SkIntToScalar(W); 105 const SkScalar h = SkIntToScalar(H); 106 SkMatrix m; 107 m.setScale(SkIntToScalar(6), SkIntToScalar(6)); 108 SkShader* s = SkShader::CreateBitmapShader(fBG, 109 SkShader::kRepeat_TileMode, 110 SkShader::kRepeat_TileMode, 111 &m); 112 113 SkPaint labelP; 114 labelP.setAntiAlias(true); 115 sk_tool_utils::set_portable_typeface(&labelP); 116 labelP.setTextAlign(SkPaint::kCenter_Align); 117 118 SkPaint textP; 119 textP.setAntiAlias(true); 120 textP.setTypeface(fColorType); 121 textP.setTextSize(SkIntToScalar(70)); 122 123 const int W = 5; 124 125 SkScalar x0 = 0; 126 SkScalar y0 = 0; 127 SkScalar x = x0, y = y0; 128 for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) { 129 SkXfermode* mode = SkXfermode::Create(gModes[i].fMode); 130 SkAutoUnref aur(mode); 131 SkRect r; 132 r.set(x, y, x+w, y+h); 133 134 SkPaint p; 135 p.setStyle(SkPaint::kFill_Style); 136 p.setShader(s); 137 canvas->drawRect(r, p); 138 139 r.inset(-SK_ScalarHalf, -SK_ScalarHalf); 140 p.setStyle(SkPaint::kStroke_Style); 141 p.setShader(nullptr); 142 canvas->drawRect(r, p); 143 144 textP.setXfermode(mode); 145 canvas->drawText("H", 1, x+ w/10.f, y + 7.f*h/8.f, textP); 146 #if 1 147 canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel), 148 x + w/2, y - labelP.getTextSize()/2, labelP); 149 #endif 150 x += w + SkIntToScalar(10); 151 if ((i % W) == W - 1) { 152 x = x0; 153 y += h + SkIntToScalar(30); 154 } 155 } 156 s->unref(); 157 } 158 159 private: 160 SkBitmap fBG; 161 SkTypeface* fColorType; 162 163 typedef GM INHERITED; 164 }; 165 166 ////////////////////////////////////////////////////////////////////////////// 167 168 static GM* MyFactory(void*) { return new ColorTypeXfermodeGM; } 169 static GMRegistry reg(MyFactory); 170 171 } 172
