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 proxy()23 SkTypeface* proxy() const { return fProxy.get(); } paint()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 SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics( 31 PerGlyphInfo, 32 const uint32_t* glyphIDs, 33 uint32_t glyphIDsCount) const override; 34 SkStreamAsset* onOpenStream(int* ttcIndex) const override; 35 void onGetFontDescriptor(SkFontDescriptor*, bool* isLocal) const override; 36 37 int onCharsToGlyphs(const void* chars, Encoding encoding, 38 uint16_t glyphs[], int glyphCount) const override; 39 int onCountGlyphs() const override; 40 int onGetUPEM() const override; 41 42 void onGetFamilyName(SkString* familyName) const override; 43 SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override; 44 45 int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[], 46 int coordinateCount) const override; 47 int onGetTableTags(SkFontTableTag tags[]) const override; 48 size_t onGetTableData(SkFontTableTag, size_t offset, 49 size_t length, void* data) const override; 50 51 private: 52 sk_sp<SkTypeface> fProxy; 53 SkPaint fPaint; 54 bool fFakeIt; 55 }; 56 57 #endif 58