1 /* 2 * Copyright 2020 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: ColrV1GM(SkScalar skewX,SkScalar rotateDeg)29 ColrV1GM(SkScalar skewX, SkScalar rotateDeg) : fSkewX(skewX), fRotateDeg(rotateDeg) { } 30 31 protected: 32 struct EmojiFont { 33 sk_sp<SkTypeface> fTypeface; 34 const uint16_t fGlyphs[10] = { 19, 33, 34, 35, 20, 21, 22, 23, 24, 25 }; 35 const size_t fGlyphs_bytesize = 36 SK_ARRAY_COUNT(fGlyphs) * sizeof(uint16_t); 37 } fEmojiFont; 38 onOnceBeforeDraw()39 void onOnceBeforeDraw() override { 40 fEmojiFont.fTypeface = 41 MakeResourceAsTypeface("fonts/colrv1_samples.ttf"); 42 } 43 onShortName()44 SkString onShortName() override { 45 if (fSkewX != 0 || fRotateDeg != 0) { 46 return SkStringPrintf("colrv1_skew_%g_rotate_%g", 47 fSkewX, 48 fRotateDeg); 49 } 50 return SkString("colrv1"); 51 } 52 onISize()53 SkISize onISize() override { return SkISize::Make(1400, 600); } 54 onDraw(SkCanvas * canvas,SkString * errorMsg)55 DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override { 56 canvas->drawColor(SK_ColorWHITE); 57 SkPaint paint; 58 59 canvas->translate(200, 20); 60 61 if (!fEmojiFont.fTypeface) { 62 *errorMsg = "Did not recognize COLR v1 font format."; 63 return DrawResult::kSkip; 64 } 65 66 canvas->rotate(fRotateDeg); 67 canvas->skew(fSkewX, 0); 68 69 SkFont font(fEmojiFont.fTypeface); 70 71 SkFontMetrics metrics; 72 SkScalar y = 0; 73 for (SkScalar textSize : { 12, 18, 30, 120 }) { 74 font.setSize(textSize); 75 font.getMetrics(&metrics); 76 y += -metrics.fAscent; 77 canvas->drawSimpleText(fEmojiFont.fGlyphs, 78 fEmojiFont.fGlyphs_bytesize, 79 SkTextEncoding::kGlyphID, 80 10, y, font, paint); 81 y += metrics.fDescent + metrics.fLeading; 82 } 83 return DrawResult::kOk; 84 } 85 86 private: 87 using INHERITED = GM; 88 SkScalar fSkewX; 89 SkScalar fRotateDeg; 90 }; 91 92 DEF_GM(return new ColrV1GM(0.f, 0.f);) 93 DEF_GM(return new ColrV1GM(-0.5f, 0.f);) 94 DEF_GM(return new ColrV1GM(0.f, 20.f);) 95 DEF_GM(return new ColrV1GM(-0.5f, 20.f);) 96 97 } // namespace skiagm 98