/* * Copyright 2014 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkTestScalerContext_DEFINED #define SkTestScalerContext_DEFINED #include "SkFixed.h" #include "SkPaint.h" #include "SkPath.h" #include "SkRefCnt.h" #include "SkTDArray.h" #include "SkTypeface.h" class SkTestFont; struct SkTestFontData { const SkScalar* fPoints; const unsigned char* fVerbs; const unsigned* fCharCodes; const size_t fCharCodesCount; const SkFixed* fWidths; const SkPaint::FontMetrics& fMetrics; const char* fName; SkTypeface::Style fStyle; sk_sp fCachedFont; }; class SkTestFont : public SkRefCnt { public: SkTestFont(const SkTestFontData& ); virtual ~SkTestFont(); int codeToIndex(SkUnichar charCode) const; void init(const SkScalar* pts, const unsigned char* verbs); #ifdef SK_DEBUG // detect missing test font data mutable unsigned char fDebugBits[16]; mutable SkUnichar fDebugOverage[8]; const char* fDebugName; SkFontStyle fDebugStyle; const char* debugFontName() const { return fName; } #endif private: const unsigned* fCharCodes; const size_t fCharCodesCount; const SkFixed* fWidths; const SkPaint::FontMetrics& fMetrics; const char* fName; SkPath** fPaths; friend class SkTestTypeface; typedef SkRefCnt INHERITED; }; class SkTestTypeface : public SkTypeface { public: SkTestTypeface(sk_sp, const SkFontStyle& style); void getAdvance(SkGlyph* glyph); void getFontMetrics(SkPaint::FontMetrics* metrics); void getMetrics(SkGlyph* glyph); void getPath(const SkGlyph& glyph, SkPath* path); protected: SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&, const SkDescriptor* desc) const override; void onFilterRec(SkScalerContextRec* rec) const override; SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics( PerGlyphInfo, const uint32_t* glyphIDs, uint32_t glyphIDsCount) const override; SkStreamAsset* onOpenStream(int* ttcIndex) const override { return nullptr; } void onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const override; int onCharsToGlyphs(const void* chars, Encoding encoding, uint16_t glyphs[], int glyphCount) const override; int onCountGlyphs() const override { return (int) fTestFont->fCharCodesCount; } int onGetUPEM() const override { SkASSERT(0); // don't expect to get here return 1; } void onGetFamilyName(SkString* familyName) const override; SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override; int onGetTableTags(SkFontTableTag tags[]) const override { return 0; } size_t onGetTableData(SkFontTableTag tag, size_t offset, size_t length, void* data) const override { return 0; } private: sk_sp fTestFont; friend class SkTestScalerContext; }; SkTypeface* CreateTestTypeface(const char* name, SkTypeface::Style style); #endif