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SkFontMgr_custom.h


products/Sources/formale Sprachen/C/Firefox/gfx/skia/skia/src/ports/SkFontMgr_custom.h

/* * Copyright 2006 The Android Open Source Project * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkFontMgr_custom_DEFINED #define SkFontMgr_custom_DEFINED #include "include/core/SkFontMgr.h" #include "include/core/SkFontStyle.h" #include "include/core/SkRefCnt.h" #include "include/core/SkString.h" #include "include/core/SkTypes.h" #include "include/private/base/SkTArray.h" #include "src/ports/SkTypeface_FreeType.h" class SkData; class SkFontDescriptor; class SkStreamAsset; class SkTypeface; /** The base SkTypeface implementation for the custom font manager. */ class SkTypeface_Custom : public SkTypeface_FreeType { public: SkTypeface_Custom(const SkFontStyle& style, bool isFixedPitch, bool sysFont, SkString familyName, int index); bool isSysFont() const; protected: void onGetFamilyName(SkString* familyName) const override; void onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const override; int getIndex() const; private: const bool fIsSysFont; const SkString fFamilyName; const int fIndex; using INHERITED = SkTypeface_FreeType; }; /** The empty SkTypeface implementation for the custom font manager. * Used as the last resort fallback typeface. */ class SkTypeface_Empty : public SkTypeface_Custom { public: SkTypeface_Empty() ; protected: std::unique_ptr onOpenStream(int*) const override; sk_sp onMakeClone(const SkFontArguments& args) const override; std::unique_ptr onMakeFontData() const override; private: using INHERITED = SkTypeface_Custom; }; /** The file SkTypeface implementation for the custom font manager. */ class SkTypeface_File : public SkTypeface_Custom { public: SkTypeface_File(const SkFontStyle& style, bool isFixedPitch, bool sysFont, SkString familyName, const char path[], int index); protected: std::unique_ptr onOpenStream(int* ttcIndex) const override; sk_sp onMakeClone(const SkFontArguments& args) const override; std::unique_ptr onMakeFontData() const override; private: SkString fPath; using INHERITED = SkTypeface_Custom; }; /////////////////////////////////////////////////////////////////////////////// /** * SkFontStyleSet_Custom * * This class is used by SkFontMgr_Custom to hold SkTypeface_Custom families. */ class SkFontStyleSet_Custom : public SkFontStyleSet { public: explicit SkFontStyleSet_Custom(SkString familyName); /** Should only be called during the initial build phase. */ void appendTypeface(sk_sp typeface); int count() override; void getStyle(int index, SkFontStyle* style, SkString* name) override; sk_sp createTypeface(int index) override; sk_sp matchStyle(const SkFontStyle& pattern) override; SkString getFamilyName(); private: skia_private::TArray> fStyles; SkString fFamilyName; friend class SkFontMgr_Custom; }; /** * SkFontMgr_Custom * * This class is essentially a collection of SkFontStyleSet_Custom, * one SkFontStyleSet_Custom for each family. This class may be modified * to load fonts from any source by changing the initialization. */ class SkFontMgr_Custom : public SkFontMgr { public: typedef skia_private::TArray> Families; class SystemFontLoader { public: virtual ~SystemFontLoader() { } virtual void loadSystemFonts(const SkFontScanner*, Families*) const = 0; }; explicit SkFontMgr_Custom(const SystemFontLoader& loader); protected: int onCountFamilies() const override; void onGetFamilyName(int index, SkString* familyName) const override; sk_sp onCreateStyleSet(int index) const override; sk_sp onMatchFamily(const char familyName[]) const override; sk_sp onMatchFamilyStyle(const char familyName[], const SkFontStyle& fontStyle) const override; sk_sp onMatchFamilyStyleCharacter(const char familyName[], const SkFontStyle&, const char* bcp47[], int bcp47Count, SkUnichar character) const override; sk_sp onMakeFromData(sk_sp data, int ttcIndex) const override; sk_sp onMakeFromStreamIndex(std::unique_ptr, int ttcIndex) const override; sk_sp onMakeFromStreamArgs(std::unique_ptr, const SkFontArguments&) const override; sk_sp onMakeFromFile(const char path[], int ttcIndex) const override; sk_sp onLegacyMakeTypeface(const char familyName[], SkFontStyle style) const override; private: Families fFamilies; sk_sp fDefaultFamily; std::unique_ptr fScanner; }; #endif

                                                                                                                                                                                                                                                                                                                                                                                                     

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