submodule/skia/gm/colrv1.cpp

   1 /*
   2  * Copyright 2021 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/gm.h"
   9 #include "include/core/SkCanvas.h"
  10 #include "include/core/SkColor.h"
  11 #include "include/core/SkFont.h"
  12 #include "include/core/SkFontMetrics.h"
  13 #include "include/core/SkPaint.h"
  14 #include "include/core/SkRefCnt.h"
  15 #include "include/core/SkScalar.h"
  16 #include "include/core/SkSize.h"
  17 #include "include/core/SkString.h"
  18 #include "include/core/SkTypeface.h"
  19 #include "tools/Resources.h"
  20 #include "tools/ToolUtils.h"
  21
  22 #include <string.h>
  23 #include <initializer_list>
  24
  25 namespace skiagm {
  26
  27 class ColrV1GM : public GM {
  28 public:
  29
  30   // TODO(drott): Consolidate test fonts.
  31   enum ColrV1TestType {
  32     kSkiaSampleFont,
  33     kColorFontsRepoGradients,
  34     kColorFontsRepoScaling,
  35     kColorFontsRepoExtendMode,
  36     kColorFontsRepoRotate,
  37     kColorFontsRepoSkew,
  38     kColorFontsRepoTransform,
  39     kColorFontsRepoClipBox,
  40     kColorFontsRepoComposite,
  41     kColorFontsRepoForeground,
  42     kColorFontsRepoSweepPad,
  43     kColorFontsRepoSweepReflect,
  44     kColorFontsRepoSweepRepeat,
  45   };
  46
  47   ColrV1GM(ColrV1TestType testType, SkScalar skewX, SkScalar rotateDeg)
  48           : fSkewX(skewX), fRotateDeg(rotateDeg), fTestType(testType) {}
  49
  50 protected:
  51     static SkString testTypeToString(ColrV1TestType testType) {
  52         switch (testType) {
  53             case kSkiaSampleFont:
  54                 return SkString("skia");
  55             case kColorFontsRepoGradients:
  56                 return SkString("gradients");
  57             case kColorFontsRepoScaling:
  58                 return SkString("scaling");
  59             case kColorFontsRepoExtendMode:
  60                 return SkString("extend_mode");
  61             case kColorFontsRepoRotate:
  62                 return SkString("rotate");
  63             case kColorFontsRepoSkew:
  64                 return SkString("skew");
  65             case kColorFontsRepoTransform:
  66                 return SkString("transform");
  67             case kColorFontsRepoClipBox:
  68                 return SkString("clipbox");
  69             case kColorFontsRepoComposite:
  70                 return SkString("composite");
  71             case kColorFontsRepoForeground:
  72                 return SkString("foreground");
  73             case kColorFontsRepoSweepPad:
  74                 return SkString("sweep_pad");
  75             case kColorFontsRepoSweepReflect:
  76                 return SkString("sweep_reflect");
  77             case kColorFontsRepoSweepRepeat:
  78                 return SkString("sweep_repeat");
  79         }
  80         SkASSERT(false); /* not reached */
  81         return SkString();
  82     }
  83
  84     struct EmojiFont {
  85         sk_sp<SkTypeface> fTypeface;
  86         std::vector<uint16_t> fGlyphs;
  87         size_t bytesize() { return fGlyphs.size() * sizeof(uint16_t); }
  88     } fEmojiFont;
  89
  90     void onOnceBeforeDraw() override {
  91         if (fTestType == kSkiaSampleFont) {
  92             fEmojiFont.fTypeface = MakeResourceAsTypeface("fonts/colrv1_samples.ttf");
  93             fEmojiFont.fGlyphs = {19, 33, 34, 35, 20, 21, 22, 23, 24, 25};
  94             return;
  95         }
  96
  97         fEmojiFont.fTypeface = MakeResourceAsTypeface("fonts/more_samples-glyf_colr_1.ttf");
  98
  99         switch (fTestType) {
 100             case kSkiaSampleFont:
 101                 SkASSERT(false);
 102                 break;
 103             case kColorFontsRepoGradients:
 104                 fEmojiFont.fGlyphs = {2, 5, 6, 7, 8, 55};
 105                 break;
 106             case kColorFontsRepoScaling:
 107                 fEmojiFont.fGlyphs = {9, 10, 11, 12, 13, 14};
 108                 break;
 109             case kColorFontsRepoExtendMode:
 110                 fEmojiFont.fGlyphs = {15, 16, 17, 18, 19, 20};
 111                 break;
 112             case kColorFontsRepoRotate:
 113                 fEmojiFont.fGlyphs = {21, 22, 23, 24};
 114                 break;
 115             case kColorFontsRepoSkew:
 116                 fEmojiFont.fGlyphs = {25, 26, 27, 28, 29, 30};
 117                 break;
 118             case kColorFontsRepoTransform:
 119                 fEmojiFont.fGlyphs = {31, 32, 33, 34};
 120                 break;
 121             case kColorFontsRepoClipBox:
 122                 fEmojiFont.fGlyphs = {35, 36, 37, 38, 39};
 123                 break;
 124             case kColorFontsRepoComposite:
 125                 fEmojiFont.fGlyphs = {40, 41, 42, 43, 44, 45, 46};
 126                 break;
 127             case kColorFontsRepoForeground:
 128                 fEmojiFont.fGlyphs = {47, 48, 49, 50, 51, 52, 53, 54};
 129                 break;
 130             case kColorFontsRepoSweepPad:
 131                 fEmojiFont.fGlyphs = {2, 58, 59, 60, 61, 62, 63, 64};
 132                 break;
 133             case kColorFontsRepoSweepReflect:
 134                 fEmojiFont.fGlyphs = {65, 66, 67, 68, 69, 70, 71, 72};
 135                 break;
 136             case kColorFontsRepoSweepRepeat:
 137                 fEmojiFont.fGlyphs = {73, 74, 75, 76, 77, 78, 79, 80};
 138                 break;
 139         }
 140     }
 141
 142     SkString onShortName() override {
 143         SkString gm_name = SkStringPrintf("colrv1_%s_samples",
 144                                           testTypeToString(fTestType).c_str());
 145         if (fSkewX) {
 146             gm_name.append("_skew");
 147         }
 148
 149         if (fRotateDeg) {
 150             gm_name.append("_rotate");
 151         }
 152         return gm_name;
 153     }
 154
 155     SkISize onISize() override { return SkISize::Make(1400, 600); }
 156
 157     DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
 158         canvas->drawColor(SK_ColorWHITE);
 159         SkPaint paint;
 160
 161         canvas->translate(200, 20);
 162
 163         if (!fEmojiFont.fTypeface) {
 164           *errorMsg = "Did not recognize COLR v1 font format.";
 165           return DrawResult::kSkip;
 166         }
 167
 168         canvas->rotate(fRotateDeg);
 169         canvas->skew(fSkewX, 0);
 170
 171         SkFont font(fEmojiFont.fTypeface);
 172
 173         SkFontMetrics metrics;
 174         SkScalar y = 0;
 175         std::vector<SkColor> paint_colors = {
 176                 SK_ColorBLACK, SK_ColorGREEN, SK_ColorRED, SK_ColorBLUE};
 177         auto paint_color_iterator = paint_colors.begin();
 178         for (SkScalar textSize : { 12, 18, 30, 120 }) {
 179             font.setSize(textSize);
 180             font.getMetrics(&metrics);
 181             y += -metrics.fAscent;
 182             paint.setColor(*paint_color_iterator);
 183             canvas->drawSimpleText(fEmojiFont.fGlyphs.data(),
 184                                    fEmojiFont.bytesize(),
 185                                    SkTextEncoding::kGlyphID,
 186                                    10, y, font, paint);
 187             y += metrics.fDescent + metrics.fLeading;
 188             paint_color_iterator++;
 189         }
 190         return DrawResult::kOk;
 191     }
 192
 193 private:
 194     using INHERITED = GM;
 195     SkScalar fSkewX;
 196     SkScalar fRotateDeg;
 197     ColrV1TestType fTestType;
 198 };
 199
 200 DEF_GM(return new ColrV1GM(ColrV1GM::kSkiaSampleFont, 0.f, 0.f);)
 201 DEF_GM(return new ColrV1GM(ColrV1GM::kSkiaSampleFont, -0.5f, 0.f);)
 202 DEF_GM(return new ColrV1GM(ColrV1GM::kSkiaSampleFont, 0.f, 20.f);)
 203 DEF_GM(return new ColrV1GM(ColrV1GM::kSkiaSampleFont, -0.5f, 20.f);)
 204 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoGradients, 0.f, 0.f);)
 205 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoScaling, 0.f, 0.f);)
 206 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoExtendMode, 0.f, 0.f);)
 207 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoRotate, 0.f, 0.f);)
 208 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoSkew, 0.f, 0.f);)
 209 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoTransform, 0.f, 0.f);)
 210 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoClipBox, 0.f, 0.f);)
 211 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoClipBox, -0.5f, 20.f);)
 212 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoComposite, 0.f, 0.f);)
 213 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoForeground, 0.f, 0.f);)
 214 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoSweepPad, 0.f, 0.f);)
 215 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoSweepReflect, 0.f, 0.f);)
 216 DEF_GM(return new ColrV1GM(ColrV1GM::kColorFontsRepoSweepRepeat, 0.f, 0.f);)
 217
 218 }  // namespace skiagm