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 #ifndef SkRandomScalerContext_DEFINED 9 #define SkRandomScalerContext_DEFINED 10 11 #include "SkScalerContext.h" 12 #include "SkTypeface.h" 13 14 /* 15 * This scaler context is for debug only purposes. It will 'randomly' but deterministically return 16 * LCD / A8 / BW / RBGA masks based off of the Glyph ID 17 */ 18 19 class SkRandomTypeface : public SkTypeface { 20 public: 21 SkRandomTypeface(sk_sp<SkTypeface> proxy, const SkPaint&, bool fakeit); 22 23 SkTypeface* proxy() const { return fProxy.get(); } 24 const SkPaint& paint() const { return fPaint; } 25 26 protected: 27 SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&, 28 const SkDescriptor*) const override; 29 void onFilterRec(SkScalerContextRec*) const override; 30 void getGlyphToUnicodeMap(SkUnichar*) const override; 31 std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override; 32 SkStreamAsset* onOpenStream(int* ttcIndex) const override; 33 sk_sp<SkTypeface> onMakeClone(const SkFontArguments& args) const override; 34 void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const override; 35 36 int onCharsToGlyphs(const void* chars, Encoding encoding, 37 uint16_t glyphs[], int glyphCount) const override; 38 int onCountGlyphs() const override; 39 int onGetUPEM() const override; 40 41 void onGetFamilyName(SkString* familyName) const override; 42 SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override; 43 44 int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[], 45 int coordinateCount) const override; 46 int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[], 47 int parameterCount) const override; 48 int onGetTableTags(SkFontTableTag tags[]) const override; 49 size_t onGetTableData(SkFontTableTag, size_t offset, 50 size_t length, void* data) const override; 51 52 private: 53 sk_sp<SkTypeface> fProxy; 54 SkPaint fPaint; 55 bool fFakeIt; 56 }; 57 58 #endif 59
