robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 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 "SkCanvas.h" |
| 10 | #include "SkRSXform.h" |
| 11 | #include "SkSurface.h" |
| 12 | |
| 13 | // Create a square atlas of: |
| 14 | // opaque white | opaque red |
| 15 | // ------------------------------------ |
| 16 | // opaque green | transparent black |
| 17 | // |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 18 | static sk_sp<SkImage> make_atlas(SkCanvas* caller, int atlasSize) { |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 19 | const int kBlockSize = atlasSize/2; |
| 20 | |
| 21 | SkImageInfo info = SkImageInfo::MakeN32Premul(atlasSize, atlasSize); |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 22 | auto surface(caller->makeSurface(info)); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 23 | if (nullptr == surface) { |
reed | e8f3062 | 2016-03-23 18:59:25 -0700 | [diff] [blame] | 24 | surface = SkSurface::MakeRaster(info); |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 25 | } |
| 26 | SkCanvas* canvas = surface->getCanvas(); |
| 27 | |
| 28 | SkPaint paint; |
| 29 | paint.setXfermode(SkXfermode::Create(SkXfermode::kSrc_Mode)); |
| 30 | |
| 31 | paint.setColor(SK_ColorWHITE); |
| 32 | SkRect r = SkRect::MakeXYWH(0, 0, |
| 33 | SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize)); |
| 34 | canvas->drawRect(r, paint); |
| 35 | |
| 36 | paint.setColor(SK_ColorRED); |
| 37 | r = SkRect::MakeXYWH(SkIntToScalar(kBlockSize), 0, |
| 38 | SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize)); |
| 39 | canvas->drawRect(r, paint); |
| 40 | |
| 41 | paint.setColor(SK_ColorGREEN); |
| 42 | r = SkRect::MakeXYWH(0, SkIntToScalar(kBlockSize), |
| 43 | SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize)); |
| 44 | canvas->drawRect(r, paint); |
| 45 | |
| 46 | paint.setColor(SK_ColorTRANSPARENT); |
| 47 | r = SkRect::MakeXYWH(SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize), |
| 48 | SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize)); |
| 49 | canvas->drawRect(r, paint); |
| 50 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 51 | return surface->makeImageSnapshot(); |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | // This GM tests the drawAtlas API with colors, different xfer modes |
| 55 | // and transparency in the atlas image |
| 56 | class DrawAtlasColorsGM : public skiagm::GM { |
| 57 | public: |
| 58 | DrawAtlasColorsGM() { |
| 59 | this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC)); |
| 60 | } |
| 61 | |
| 62 | protected: |
| 63 | SkString onShortName() override { |
| 64 | return SkString("draw-atlas-colors"); |
| 65 | } |
| 66 | |
| 67 | SkISize onISize() override { |
| 68 | return SkISize::Make(kNumXferModes * (kAtlasSize + kPad) + kPad, |
| 69 | 2 * kNumColors * (kAtlasSize + kPad) + kTextPad + kPad); |
| 70 | } |
| 71 | |
| 72 | void onDraw(SkCanvas* canvas) override { |
| 73 | const SkRect target = SkRect::MakeWH(SkIntToScalar(kAtlasSize), SkIntToScalar(kAtlasSize)); |
| 74 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 75 | if (nullptr == fAtlas) { |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 76 | fAtlas = make_atlas(canvas, kAtlasSize); |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | const struct { |
| 80 | SkXfermode::Mode fMode; |
| 81 | const char* fLabel; |
| 82 | } gModes[] = { |
| 83 | { SkXfermode::kClear_Mode, "Clear" }, |
| 84 | { SkXfermode::kSrc_Mode, "Src" }, |
| 85 | { SkXfermode::kDst_Mode, "Dst" }, |
| 86 | { SkXfermode::kSrcOver_Mode, "SrcOver" }, |
| 87 | { SkXfermode::kDstOver_Mode, "DstOver" }, |
| 88 | { SkXfermode::kSrcIn_Mode, "SrcIn" }, |
| 89 | { SkXfermode::kDstIn_Mode, "DstIn" }, |
| 90 | { SkXfermode::kSrcOut_Mode, "SrcOut" }, |
| 91 | { SkXfermode::kDstOut_Mode, "DstOut" }, |
| 92 | { SkXfermode::kSrcATop_Mode, "SrcATop" }, |
| 93 | { SkXfermode::kDstATop_Mode, "DstATop" }, |
| 94 | { SkXfermode::kXor_Mode, "Xor" }, |
| 95 | { SkXfermode::kPlus_Mode, "Plus" }, |
| 96 | { SkXfermode::kModulate_Mode, "Mod" }, |
| 97 | { SkXfermode::kScreen_Mode, "Screen" }, |
| 98 | { SkXfermode::kOverlay_Mode, "Overlay" }, |
| 99 | { SkXfermode::kDarken_Mode, "Darken" }, |
| 100 | { SkXfermode::kLighten_Mode, "Lighten" }, |
| 101 | { SkXfermode::kColorDodge_Mode, "Dodge" }, |
| 102 | { SkXfermode::kColorBurn_Mode, "Burn" }, |
| 103 | { SkXfermode::kHardLight_Mode, "Hard" }, |
| 104 | { SkXfermode::kSoftLight_Mode, "Soft" }, |
| 105 | { SkXfermode::kDifference_Mode, "Diff" }, |
| 106 | { SkXfermode::kExclusion_Mode, "Exclusion" }, |
| 107 | { SkXfermode::kMultiply_Mode, "Multiply" }, |
| 108 | { SkXfermode::kHue_Mode, "Hue" }, |
| 109 | { SkXfermode::kSaturation_Mode, "Sat" }, |
| 110 | { SkXfermode::kColor_Mode, "Color" }, |
| 111 | { SkXfermode::kLuminosity_Mode, "Luminosity"}, |
| 112 | }; |
| 113 | |
| 114 | SkColor gColors[] = { |
| 115 | SK_ColorWHITE, |
| 116 | SK_ColorRED, |
| 117 | 0x88888888, // transparent grey |
| 118 | 0x88000088 // transparent blue |
| 119 | }; |
| 120 | |
| 121 | const int numModes = SK_ARRAY_COUNT(gModes); |
| 122 | SkASSERT(numModes == kNumXferModes); |
| 123 | const int numColors = SK_ARRAY_COUNT(gColors); |
| 124 | SkASSERT(numColors == kNumColors); |
| 125 | SkRSXform xforms[numColors]; |
| 126 | SkRect rects[numColors]; |
| 127 | SkColor quadColors[numColors]; |
| 128 | |
| 129 | SkPaint paint; |
| 130 | paint.setAntiAlias(true); |
| 131 | |
| 132 | for (int i = 0; i < numColors; ++i) { |
| 133 | xforms[i].set(1.0f, 0.0f, SkIntToScalar(kPad), i*(target.width()+kPad)); |
| 134 | rects[i] = target; |
| 135 | quadColors[i] = gColors[i]; |
| 136 | } |
| 137 | |
| 138 | SkPaint textP; |
| 139 | textP.setTextSize(SkIntToScalar(kTextPad)); |
| 140 | textP.setAntiAlias(true); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 141 | sk_tool_utils::set_portable_typeface(&textP, nullptr); |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 142 | |
| 143 | for (int i = 0; i < numModes; ++i) { |
| 144 | canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel), |
| 145 | i*(target.width()+kPad)+kPad, SkIntToScalar(kTextPad), |
| 146 | textP); |
| 147 | } |
| 148 | |
| 149 | for (int i = 0; i < numModes; ++i) { |
| 150 | canvas->save(); |
| 151 | canvas->translate(SkIntToScalar(i*(target.height()+kPad)), |
| 152 | SkIntToScalar(kTextPad+kPad)); |
| 153 | // w/o a paint |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 154 | canvas->drawAtlas(fAtlas.get(), xforms, rects, quadColors, numColors, |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 155 | gModes[i].fMode, nullptr, nullptr); |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 156 | canvas->translate(0.0f, numColors*(target.height()+kPad)); |
| 157 | // w a paint |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 158 | canvas->drawAtlas(fAtlas.get(), xforms, rects, quadColors, numColors, |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 159 | gModes[i].fMode, nullptr, &paint); |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 160 | canvas->restore(); |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | private: |
| 165 | static const int kNumXferModes = 29; |
| 166 | static const int kNumColors = 4; |
| 167 | static const int kAtlasSize = 30; |
| 168 | static const int kPad = 2; |
| 169 | static const int kTextPad = 8; |
| 170 | |
| 171 | |
reed | 9ce9d67 | 2016-03-17 10:51:11 -0700 | [diff] [blame] | 172 | sk_sp<SkImage> fAtlas; |
robertphillips | 29ccdf8 | 2015-07-24 10:20:45 -0700 | [diff] [blame] | 173 | |
| 174 | typedef GM INHERITED; |
| 175 | }; |
| 176 | DEF_GM( return new DrawAtlasColorsGM; ) |
| 177 | |