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// Copyright 2017 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.
#include <memory>
#include <vector>
#include "build/build_config.h"
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_memory_wrappers.h"
#include "core/fxge/cfx_face.h"
#include "core/fxge/fx_freetype.h"
#include "third_party/base/span.h"
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
#include "core/fxge/fx_font.h"
class CFX_GlyphCache;
class CFX_GlyphBitmap;
class CFX_PathData;
class CFX_SubstFont;
class IFX_SeekableReadStream;
class CFX_Font {
// Used when the font name is empty.
static const char kUntitledFontName[];
static const char kDefaultAnsiFontName[];
static const char kUniversalDefaultFontName[];
static ByteString GetDefaultFontNameByCharset(uint8_t nCharset);
static uint8_t GetCharSetFromUnicode(uint16_t word);
void LoadSubst(const ByteString& face_name,
bool bTrueType,
uint32_t flags,
int weight,
int italic_angle,
int CharsetCP,
bool bVertical);
bool LoadEmbedded(pdfium::span<const uint8_t> src_span,
bool bForceAsVertical);
RetainPtr<CFX_Face> GetFace() const { return m_Face; }
FXFT_FaceRec* GetFaceRec() const {
return m_Face ? m_Face->GetRec() : nullptr;
CFX_SubstFont* GetSubstFont() const { return m_pSubstFont.get(); }
int GetSubstFontItalicAngle() const;
#if defined(PDF_ENABLE_XFA)
bool LoadFile(const RetainPtr<IFX_SeekableReadStream>& pFile, int nFaceIndex);
#if !defined(OS_WIN)
void SetFace(RetainPtr<CFX_Face> face);
void SetFontSpan(pdfium::span<uint8_t> pSpan) { m_FontData = pSpan; }
void SetSubstFont(std::unique_ptr<CFX_SubstFont> subst);
#endif // !defined(OS_WIN)
#endif // defined(PDF_ENABLE_XFA)
const CFX_GlyphBitmap* LoadGlyphBitmap(uint32_t glyph_index,
bool bFontStyle,
const CFX_Matrix& matrix,
uint32_t dest_width,
int anti_alias,
int* pTextFlags) const;
const CFX_PathData* LoadGlyphPath(uint32_t glyph_index,
uint32_t dest_width) const;
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
CFX_TypeFace* GetDeviceCache() const;
uint32_t GetGlyphWidth(uint32_t glyph_index);
int GetAscent() const;
int GetDescent() const;
bool GetGlyphBBox(uint32_t glyph_index, FX_RECT* pBBox);
bool IsItalic() const;
bool IsBold() const;
bool IsFixedWidth() const;
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
bool IsSubstFontBold() const;
bool IsVertical() const { return m_bVertical; }
ByteString GetPsName() const;
ByteString GetFamilyName() const;
ByteString GetFaceName() const;
ByteString GetBaseFontName(bool restrict_to_psname) const;
bool IsTTFont() const;
bool GetBBox(FX_RECT* pBBox);
bool IsEmbedded() const { return m_bEmbedded; }
uint8_t* GetSubData() const { return m_pGsubData.get(); }
void SetSubData(uint8_t* data) { m_pGsubData.reset(data); }
pdfium::span<uint8_t> GetFontSpan() const { return m_FontData; }
void AdjustMMParams(int glyph_index, int dest_width, int weight) const;
CFX_PathData* LoadGlyphPathImpl(uint32_t glyph_index,
uint32_t dest_width) const;
#if defined(OS_MACOSX)
void* GetPlatformFont() const { return m_pPlatformFont; }
void SetPlatformFont(void* font) { m_pPlatformFont = font; }
static constexpr size_t kAngleSkewArraySize = 30;
static const char s_AngleSkew[kAngleSkewArraySize];
static constexpr size_t kWeightPowArraySize = 100;
static const uint8_t s_WeightPow[kWeightPowArraySize];
static const uint8_t s_WeightPow_11[kWeightPowArraySize];
static const uint8_t s_WeightPow_SHIFTJIS[kWeightPowArraySize];
// This struct should be the same as FPDF_CharsetFontMap.
struct CharsetFontMap {
int charset; // Character Set Enum value, see FX_CHARSET_XXX.
const char* fontname; // Name of default font to use with that charset.
* Pointer to the default character set to TT Font name map. The
* map is an array of CharsetFontMap structs, with its end indicated
* by a { -1, NULL } entry.
static const CharsetFontMap defaultTTFMap[];
RetainPtr<CFX_GlyphCache> GetOrCreateGlyphCache() const;
void ClearGlyphCache();
#if defined(OS_MACOSX)
void ReleasePlatformResource();
ByteString GetFamilyNameOrUntitled() const;
#if defined(PDF_ENABLE_XFA)
std::unique_ptr<FXFT_StreamRec> m_pOwnedStream; // Must outlive |m_Face|.
mutable RetainPtr<CFX_Face> m_Face;
mutable RetainPtr<CFX_GlyphCache> m_GlyphCache;
std::unique_ptr<CFX_SubstFont> m_pSubstFont;
std::unique_ptr<uint8_t, FxFreeDeleter> m_pGsubData;
std::vector<uint8_t, FxAllocAllocator<uint8_t>> m_FontDataAllocation;
pdfium::span<uint8_t> m_FontData;
bool m_bEmbedded = false;
bool m_bVertical = false;
#if defined(OS_MACOSX)
void* m_pPlatformFont = nullptr;