| /* |
| * 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/SkFontHost_FreeType_common.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, const 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<SkStreamAsset> onOpenStream(int*) const override; |
| sk_sp<SkTypeface> onMakeClone(const SkFontArguments& args) const override; |
| std::unique_ptr<SkFontData> 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, |
| const SkString familyName, const char path[], int index); |
| |
| protected: |
| std::unique_ptr<SkStreamAsset> onOpenStream(int* ttcIndex) const override; |
| sk_sp<SkTypeface> onMakeClone(const SkFontArguments& args) const override; |
| std::unique_ptr<SkFontData> 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(const SkString familyName); |
| |
| /** Should only be called during the initial build phase. */ |
| void appendTypeface(sk_sp<SkTypeface> typeface); |
| int count() override; |
| void getStyle(int index, SkFontStyle* style, SkString* name) override; |
| sk_sp<SkTypeface> createTypeface(int index) override; |
| sk_sp<SkTypeface> matchStyle(const SkFontStyle& pattern) override; |
| SkString getFamilyName(); |
| |
| private: |
| skia_private::TArray<sk_sp<SkTypeface>> 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<sk_sp<SkFontStyleSet_Custom>> Families; |
| class SystemFontLoader { |
| public: |
| virtual ~SystemFontLoader() { } |
| virtual void loadSystemFonts(const SkTypeface_FreeType::Scanner&, Families*) const = 0; |
| }; |
| explicit SkFontMgr_Custom(const SystemFontLoader& loader); |
| |
| protected: |
| int onCountFamilies() const override; |
| void onGetFamilyName(int index, SkString* familyName) const override; |
| sk_sp<SkFontStyleSet> onCreateStyleSet(int index) const override; |
| sk_sp<SkFontStyleSet> onMatchFamily(const char familyName[]) const override; |
| sk_sp<SkTypeface> onMatchFamilyStyle(const char familyName[], |
| const SkFontStyle& fontStyle) const override; |
| sk_sp<SkTypeface> onMatchFamilyStyleCharacter(const char familyName[], const SkFontStyle&, |
| const char* bcp47[], int bcp47Count, |
| SkUnichar character) const override; |
| sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData> data, int ttcIndex) const override; |
| sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset>, int ttcIndex) const override; |
| sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset>, const SkFontArguments&) const override; |
| sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const override; |
| sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle style) const override; |
| |
| private: |
| Families fFamilies; |
| sk_sp<SkFontStyleSet> fDefaultFamily; |
| SkTypeface_FreeType::Scanner fScanner; |
| }; |
| |
| #endif |