102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
// Copyright 2016 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXGE_CFX_FONTMGR_H_
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#define CORE_FXGE_CFX_FONTMGR_H_
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#include <map>
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#include <memory>
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#include "core/fxcrt/fx_memory_wrappers.h"
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#include "core/fxcrt/fx_string.h"
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#include "core/fxcrt/observed_ptr.h"
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#include "core/fxcrt/retain_ptr.h"
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#include "core/fxge/fx_freetype.h"
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#include "third_party/base/optional.h"
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#include "third_party/base/span.h"
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class CFX_Face;
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class CFX_FontMapper;
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class CFX_SubstFont;
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class SystemFontInfoIface;
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class CFX_FontMgr {
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public:
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class FontDesc final : public Retainable, public Observable {
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public:
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template <typename T, typename... Args>
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friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
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~FontDesc() override;
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pdfium::span<uint8_t> FontData() const {
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return {m_pFontData.get(), m_Size};
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}
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void SetFace(size_t index, CFX_Face* face);
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CFX_Face* GetFace(size_t index) const;
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private:
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FontDesc(std::unique_ptr<uint8_t, FxFreeDeleter> pData, size_t size);
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const size_t m_Size;
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std::unique_ptr<uint8_t, FxFreeDeleter> const m_pFontData;
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ObservedPtr<CFX_Face> m_TTCFaces[16];
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};
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static Optional<pdfium::span<const uint8_t>> GetBuiltinFont(size_t index);
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CFX_FontMgr();
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~CFX_FontMgr();
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RetainPtr<FontDesc> GetCachedFontDesc(const ByteString& face_name,
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int weight,
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bool bItalic);
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RetainPtr<FontDesc> AddCachedFontDesc(
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const ByteString& face_name,
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int weight,
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bool bItalic,
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std::unique_ptr<uint8_t, FxFreeDeleter> pData,
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uint32_t size);
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RetainPtr<FontDesc> GetCachedTTCFontDesc(int ttc_size, uint32_t checksum);
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RetainPtr<FontDesc> AddCachedTTCFontDesc(
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int ttc_size,
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uint32_t checksum,
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std::unique_ptr<uint8_t, FxFreeDeleter> pData,
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uint32_t size);
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RetainPtr<CFX_Face> NewFixedFace(const RetainPtr<FontDesc>& pDesc,
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pdfium::span<const uint8_t> span,
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int face_index);
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RetainPtr<CFX_Face> FindSubstFont(const ByteString& face_name,
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bool bTrueType,
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uint32_t flags,
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int weight,
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int italic_angle,
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int CharsetCP,
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CFX_SubstFont* pSubstFont);
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void SetSystemFontInfo(std::unique_ptr<SystemFontInfoIface> pFontInfo);
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// Always present.
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CFX_FontMapper* GetBuiltinMapper() const { return m_pBuiltinMapper.get(); }
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FXFT_LibraryRec* GetFTLibrary() const { return m_FTLibrary.get(); }
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bool FTLibrarySupportsHinting() const { return m_FTLibrarySupportsHinting; }
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private:
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bool FreeTypeVersionSupportsHinting() const;
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bool SetLcdFilterMode() const;
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// Must come before |m_pBuiltinMapper| and |m_FaceMap|.
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ScopedFXFTLibraryRec const m_FTLibrary;
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std::unique_ptr<CFX_FontMapper> m_pBuiltinMapper;
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std::map<ByteString, ObservedPtr<FontDesc>> m_FaceMap;
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const bool m_FTLibrarySupportsHinting;
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};
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#endif // CORE_FXGE_CFX_FONTMGR_H_
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