void CFGAS_FontMgr::RegisterFace(FXFT_Face pFace,
const CFX_WideString* pFaceName) {
if ((pFace->face_flags & FT_FACE_FLAG_SCALABLE) == 0)
return;
std::unique_ptr<CFX_FontDescriptor> pFont(new CFX_FontDescriptor);
pFont->m_dwFontStyles |= FXFT_Is_Face_Bold(pFace) ? FX_FONTSTYLE_Bold : 0;
pFont->m_dwFontStyles |= FXFT_Is_Face_Italic(pFace) ? FX_FONTSTYLE_Italic : 0;
pFont->m_dwFontStyles |= GetFlags(pFace);
std::vector<uint16_t> charsets = GetCharsets(pFace);
GetUSBCSB(pFace, pFont->m_dwUsb, pFont->m_dwCsb);
FT_ULong dwTag;
FT_ENC_TAG(dwTag, 'n', 'a', 'm', 'e');
std::vector<uint8_t> table;
unsigned long nLength = 0;
unsigned int error = FXFT_Load_Sfnt_Table(pFace, dwTag, 0, nullptr, &nLength);
if (error == 0 && nLength != 0) {
table.resize(nLength);
if (FXFT_Load_Sfnt_Table(pFace, dwTag, 0, table.data(), nullptr))
table.clear();
}
GetNames(table.empty() ? nullptr : table.data(), pFont->m_wsFamilyNames);
pFont->m_wsFamilyNames.Add(CFX_ByteString(pFace->family_name).UTF8Decode());
pFont->m_wsFaceName =
pFaceName ? *pFaceName
: CFX_WideString::FromLocal(FXFT_Get_Postscript_Name(pFace));
pFont->m_nFaceIndex = pFace->face_index;
m_InstalledFonts.Add(pFont.release());
}
IFX_GSUBTable* FXGE_CreateGSUBTable(CFX_Font* pFont)
{
if (!pFont) {
return NULL;
}
if (NULL == pFont->m_pGsubData) {
unsigned long length = 0;
int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, NULL, &length);
if (!error) {
pFont->m_pGsubData = (unsigned char*)FX_Alloc(FX_BYTE, length);
}
if (!pFont->m_pGsubData) {
return NULL;
}
}
int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, pFont->m_pGsubData, NULL);
if (!error && pFont->m_pGsubData) {
CFX_GSUBTable* pGsubTable = FX_NEW CFX_GSUBTable;
if (!pGsubTable) {
return NULL;
}
if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->m_pGsubData)) {
return pGsubTable;
}
pGsubTable->Release();
}
return NULL;
}
int CPDF_CIDFont::GetGlyphIndex(uint32_t unicode, bool* pVertGlyph) {
if (pVertGlyph)
*pVertGlyph = false;
FXFT_Face face = m_Font.GetFace();
int index = FXFT_Get_Char_Index(face, unicode);
if (unicode == 0x2502)
return index;
if (!index || !IsVertWriting())
return index;
if (m_pTTGSUBTable)
return GetVerticalGlyph(index, pVertGlyph);
if (!m_Font.GetSubData()) {
unsigned long length = 0;
int error = FXFT_Load_Sfnt_Table(face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0,
nullptr, &length);
if (!error)
m_Font.SetSubData(FX_Alloc(uint8_t, length));
}
int error = FXFT_Load_Sfnt_Table(face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0,
m_Font.GetSubData(), nullptr);
if (error || !m_Font.GetSubData())
return index;
m_pTTGSUBTable = pdfium::MakeUnique<CFX_CTTGSUBTable>();
m_pTTGSUBTable->LoadGSUBTable((FT_Bytes)m_Font.GetSubData());
return GetVerticalGlyph(index, pVertGlyph);
}
// static
IFX_GSUBTable* IFX_GSUBTable::Create(CFX_Font* pFont) {
if (!pFont) {
return NULL;
}
if (!pFont->GetSubData()) {
unsigned long length = 0;
int error = FXFT_Load_Sfnt_Table(
pFont->GetFace(), FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, NULL, &length);
if (!error) {
pFont->SetSubData((uint8_t*)FX_Alloc(uint8_t, length));
}
if (!pFont->GetSubData()) {
return NULL;
}
}
int error =
FXFT_Load_Sfnt_Table(pFont->GetFace(), FT_MAKE_TAG('G', 'S', 'U', 'B'), 0,
pFont->GetSubData(), NULL);
if (!error && pFont->GetSubData()) {
nonstd::unique_ptr<CFX_GSUBTable> pGsubTable(new CFX_GSUBTable);
if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->GetSubData())) {
return pGsubTable.release();
}
}
return NULL;
}
FX_DWORD CFPF_SkiaFont::GetFontData(FX_DWORD dwTable, FX_LPBYTE pBuffer, FX_DWORD dwSize)
{
if (!m_Face) {
return FALSE;
}
if (FXFT_Load_Sfnt_Table(m_Face, dwTable, 0, pBuffer, (unsigned long*)&dwSize)) {
return 0;
}
return dwSize;
}
FX_DWORD CFPF_SkiaFont::GetFontData(FX_DWORD dwTable, uint8_t* pBuffer, FX_DWORD dwSize)
{
if (!m_Face) {
return 0;
}
FT_ULong ulSize = pdfium::base::checked_cast<FT_ULong>(dwSize);
if (FXFT_Load_Sfnt_Table(m_Face, dwTable, 0, pBuffer, &ulSize)) {
return 0;
}
return pdfium::base::checked_cast<FX_DWORD>(ulSize);
}
