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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef CORE_FXGE_CFX_FONTMGR_H_
#define CORE_FXGE_CFX_FONTMGR_H_
#include <stddef.h>
#include <stdint.h>
#include <map>
#include <memory>
#include <tuple>
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/fx_memory_wrappers.h"
#include "core/fxcrt/observed_ptr.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxge/freetype/fx_freetype.h"
#include "third_party/base/span.h"
class CFX_Face;
class CFX_FontMapper;
class CFX_FontMgr {
public:
class FontDesc final : public Retainable, public Observable {
public:
CONSTRUCT_VIA_MAKE_RETAIN;
~FontDesc() override;
pdfium::span<uint8_t> FontData() const {
return {m_pFontData.get(), m_Size};
}
void SetFace(size_t index, CFX_Face* face);
CFX_Face* GetFace(size_t index) const;
private:
FontDesc(std::unique_ptr<uint8_t, FxFreeDeleter> pData, size_t size);
const size_t m_Size;
std::unique_ptr<uint8_t, FxFreeDeleter> const m_pFontData;
ObservedPtr<CFX_Face> m_TTCFaces[16];
};
// `index` must be less than `CFX_FontMapper::kNumStandardFonts`.
static pdfium::span<const uint8_t> GetStandardFont(size_t index);
static pdfium::span<const uint8_t> GetGenericSansFont();
static pdfium::span<const uint8_t> GetGenericSerifFont();
CFX_FontMgr();
~CFX_FontMgr();
RetainPtr<FontDesc> GetCachedFontDesc(const ByteString& face_name,
int weight,
bool bItalic);
RetainPtr<FontDesc> AddCachedFontDesc(
const ByteString& face_name,
int weight,
bool bItalic,
std::unique_ptr<uint8_t, FxFreeDeleter> pData,
size_t size);
RetainPtr<FontDesc> GetCachedTTCFontDesc(size_t ttc_size, uint32_t checksum);
RetainPtr<FontDesc> AddCachedTTCFontDesc(
size_t ttc_size,
uint32_t checksum,
std::unique_ptr<uint8_t, FxFreeDeleter> pData,
size_t size);
RetainPtr<CFX_Face> NewFixedFace(const RetainPtr<FontDesc>& pDesc,
pdfium::span<const uint8_t> span,
size_t face_index);
// Always present.
CFX_FontMapper* GetBuiltinMapper() const { return m_pBuiltinMapper.get(); }
FXFT_LibraryRec* GetFTLibrary() const { return m_FTLibrary.get(); }
bool FTLibrarySupportsHinting() const { return m_FTLibrarySupportsHinting; }
private:
bool FreeTypeVersionSupportsHinting() const;
bool SetLcdFilterMode() const;
// Must come before |m_pBuiltinMapper| and |m_FaceMap|.
ScopedFXFTLibraryRec const m_FTLibrary;
std::unique_ptr<CFX_FontMapper> m_pBuiltinMapper;
std::map<std::tuple<ByteString, int, bool>, ObservedPtr<FontDesc>> m_FaceMap;
std::map<std::tuple<size_t, uint32_t>, ObservedPtr<FontDesc>> m_TTCFaceMap;
const bool m_FTLibrarySupportsHinting;
};
#endif // CORE_FXGE_CFX_FONTMGR_H_