FX_DWORD CFX_UnicodeEncodingEx::GlyphFromCharCode(FX_DWORD charcode) {
FXFT_Face face = m_pFont->GetFace();
FT_UInt nIndex = FXFT_Get_Char_Index(face, charcode);
if (nIndex > 0) {
return nIndex;
}
int nmaps = FXFT_Get_Face_CharmapCount(face);
int m = 0;
while (m < nmaps) {
int nEncodingID =
FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[m++]);
if (m_nEncodingID == nEncodingID) {
continue;
}
int error = FXFT_Select_Charmap(face, nEncodingID);
if (error) {
continue;
}
nIndex = FXFT_Get_Char_Index(face, charcode);
if (nIndex > 0) {
m_nEncodingID = nEncodingID;
return nIndex;
}
}
FXFT_Select_Charmap(face, m_nEncodingID);
return 0;
}
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);
}
FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCode(FX_DWORD charcode) {
FXFT_Face face = m_pFont->GetFace();
if (!face)
return charcode;
if (FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE) == 0)
return FXFT_Get_Char_Index(face, charcode);
if (m_pFont->GetSubstFont() && m_pFont->GetSubstFont()->m_Charset == 2) {
FX_DWORD index = 0;
if (FXFT_Select_Charmap(face, FXFT_ENCODING_MS_SYMBOL) == 0)
index = FXFT_Get_Char_Index(face, charcode);
if (!index && !FXFT_Select_Charmap(face, FXFT_ENCODING_APPLE_ROMAN))
return FXFT_Get_Char_Index(face, charcode);
}
return charcode;
}
FX_INT32 CFPF_SkiaFont::GetGlyphIndex(FX_WCHAR wUnicode)
{
if (!m_Face) {
return wUnicode;
}
if (FXFT_Select_Charmap(m_Face, FXFT_ENCODING_UNICODE)) {
return 0;
}
return FXFT_Get_Char_Index(m_Face, wUnicode);
}
int CPDF_Font::FallbackGlyphFromCharcode(int fallbackFont, uint32_t charcode) {
if (fallbackFont < 0 ||
fallbackFont >= pdfium::CollectionSize<int>(m_FontFallbacks)) {
return -1;
}
int glyph =
FXFT_Get_Char_Index(m_FontFallbacks[fallbackFont]->GetFace(), charcode);
if (glyph == 0 || glyph == 0xffff)
return -1;
return glyph;
}
bool CFGAS_FontMgr::VerifyUnicode(CFGAS_GEFont* pFont, FX_WCHAR wcUnicode) {
if (!pFont)
return false;
FXFT_Face pFace = pFont->GetDevFont()->GetFace();
FXFT_CharMap charmap = FXFT_Get_Face_Charmap(pFace);
if (FXFT_Select_Charmap(pFace, FXFT_ENCODING_UNICODE) != 0)
return false;
if (FXFT_Get_Char_Index(pFace, wcUnicode) == 0) {
FXFT_Set_Charmap(pFace, charmap);
return false;
}
return true;
}
FX_BOOL CFGAS_FontMgrImp::VerifyUnicode(CFX_FontDescriptor* pDesc,
FX_WCHAR wcUnicode) {
IFX_FileRead* pFileRead = CreateFontStream(pDesc->m_wsFaceName.UTF8Encode());
if (!pFileRead)
return FALSE;
FXFT_Face pFace = LoadFace(pFileRead, pDesc->m_nFaceIndex);
FT_Error retCharmap = FXFT_Select_Charmap(pFace, FXFT_ENCODING_UNICODE);
FT_Error retIndex = FXFT_Get_Char_Index(pFace, wcUnicode);
pFileRead->Release();
if (!pFace)
return FALSE;
if (FXFT_Get_Face_External_Stream(pFace))
FXFT_Clear_Face_External_Stream(pFace);
FXFT_Done_Face(pFace);
return !retCharmap && retIndex;
}
FX_DWORD CFX_UnicodeEncoding::GlyphFromCharCodeEx(FX_DWORD charcode, int encoding)
{
FXFT_Face face = m_pFont->GetFace();
if (!face) {
return charcode;
}
if (encoding == ENCODING_UNICODE) {
return GlyphFromCharCode(charcode);
} else {
int nmaps = FXFT_Get_Face_CharmapCount(m_pFont->m_Face);
int i = 0;
while (i < nmaps) {
int encoding = FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i++]);
if (encoding != FXFT_ENCODING_UNICODE) {
FXFT_Select_Charmap(face, encoding);
break;
}
}
}
return FXFT_Get_Char_Index(face, charcode);
}
void CPDF_TrueTypeFont::LoadGlyphMap() {
if (!m_Font.GetFace())
return;
int baseEncoding = m_BaseEncoding;
if (m_pFontFile && m_Font.GetFace()->num_charmaps > 0 &&
(baseEncoding == PDFFONT_ENCODING_MACROMAN ||
baseEncoding == PDFFONT_ENCODING_WINANSI) &&
(m_Flags & PDFFONT_SYMBOLIC)) {
FX_BOOL bSupportWin = FALSE;
FX_BOOL bSupportMac = FALSE;
for (int i = 0; i < FXFT_Get_Face_CharmapCount(m_Font.GetFace()); i++) {
int platform_id = FXFT_Get_Charmap_PlatformID(
FXFT_Get_Face_Charmaps(m_Font.GetFace())[i]);
if (platform_id == 0 || platform_id == 3) {
bSupportWin = TRUE;
} else if (platform_id == 0 || platform_id == 1) {
bSupportMac = TRUE;
}
}
if (baseEncoding == PDFFONT_ENCODING_WINANSI && !bSupportWin) {
baseEncoding =
bSupportMac ? PDFFONT_ENCODING_MACROMAN : PDFFONT_ENCODING_BUILTIN;
} else if (baseEncoding == PDFFONT_ENCODING_MACROMAN && !bSupportMac) {
baseEncoding =
bSupportWin ? PDFFONT_ENCODING_WINANSI : PDFFONT_ENCODING_BUILTIN;
}
}
if (((baseEncoding == PDFFONT_ENCODING_MACROMAN ||
baseEncoding == PDFFONT_ENCODING_WINANSI) &&
m_CharNames.empty()) ||
(m_Flags & PDFFONT_NONSYMBOLIC)) {
if (!FXFT_Has_Glyph_Names(m_Font.GetFace()) &&
(!m_Font.GetFace()->num_charmaps || !m_Font.GetFace()->charmaps)) {
int nStartChar = m_pFontDict->GetIntegerFor("FirstChar");
if (nStartChar < 0 || nStartChar > 255)
return;
int charcode = 0;
for (; charcode < nStartChar; charcode++) {
m_GlyphIndex[charcode] = 0;
}
uint16_t nGlyph = charcode - nStartChar + 3;
for (; charcode < 256; charcode++, nGlyph++) {
m_GlyphIndex[charcode] = nGlyph;
}
return;
}
bool bMSUnicode = FT_UseTTCharmap(m_Font.GetFace(), 3, 1);
bool bMacRoman = false;
bool bMSSymbol = false;
if (!bMSUnicode) {
if (m_Flags & PDFFONT_NONSYMBOLIC) {
bMacRoman = FT_UseTTCharmap(m_Font.GetFace(), 1, 0);
bMSSymbol = !bMacRoman && FT_UseTTCharmap(m_Font.GetFace(), 3, 0);
} else {
bMSSymbol = FT_UseTTCharmap(m_Font.GetFace(), 3, 0);
bMacRoman = !bMSSymbol && FT_UseTTCharmap(m_Font.GetFace(), 1, 0);
}
}
FX_BOOL bToUnicode = m_pFontDict->KeyExist("ToUnicode");
for (int charcode = 0; charcode < 256; charcode++) {
const FX_CHAR* name =
GetAdobeCharName(baseEncoding, m_CharNames, charcode);
if (!name) {
m_GlyphIndex[charcode] =
m_pFontFile ? FXFT_Get_Char_Index(m_Font.GetFace(), charcode) : -1;
continue;
}
m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name);
if (bMSSymbol) {
for (size_t j = 0; j < FX_ArraySize(kPrefix); j++) {
uint16_t unicode = kPrefix[j] * 256 + charcode;
m_GlyphIndex[charcode] =
FXFT_Get_Char_Index(m_Font.GetFace(), unicode);
if (m_GlyphIndex[charcode]) {
break;
}
}
} else if (m_Encoding.m_Unicodes[charcode]) {
if (bMSUnicode) {
m_GlyphIndex[charcode] = FXFT_Get_Char_Index(
m_Font.GetFace(), m_Encoding.m_Unicodes[charcode]);
} else if (bMacRoman) {
uint32_t maccode = FT_CharCodeFromUnicode(
FXFT_ENCODING_APPLE_ROMAN, m_Encoding.m_Unicodes[charcode]);
if (!maccode) {
m_GlyphIndex[charcode] =
FXFT_Get_Name_Index(m_Font.GetFace(), (char*)name);
} else {
m_GlyphIndex[charcode] =
FXFT_Get_Char_Index(m_Font.GetFace(), maccode);
}
}
}
if ((m_GlyphIndex[charcode] == 0 || m_GlyphIndex[charcode] == 0xffff) &&
name) {
if (name[0] == '.' && FXSYS_strcmp(name, ".notdef") == 0) {
m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), 32);
} else {
m_GlyphIndex[charcode] =
FXFT_Get_Name_Index(m_Font.GetFace(), (char*)name);
if (m_GlyphIndex[charcode] == 0) {
if (bToUnicode) {
CFX_WideString wsUnicode = UnicodeFromCharCode(charcode);
if (!wsUnicode.IsEmpty()) {
m_GlyphIndex[charcode] =
FXFT_Get_Char_Index(m_Font.GetFace(), wsUnicode[0]);
m_Encoding.m_Unicodes[charcode] = wsUnicode[0];
}
}
if (m_GlyphIndex[charcode] == 0) {
m_GlyphIndex[charcode] =
FXFT_Get_Char_Index(m_Font.GetFace(), charcode);
}
}
}
}
}
return;
}
if (FT_UseTTCharmap(m_Font.GetFace(), 3, 0)) {
bool bFound = false;
for (int charcode = 0; charcode < 256; charcode++) {
for (size_t j = 0; j < FX_ArraySize(kPrefix); j++) {
uint16_t unicode = kPrefix[j] * 256 + charcode;
m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), unicode);
if (m_GlyphIndex[charcode]) {
bFound = true;
break;
}
}
}
if (bFound) {
if (baseEncoding != PDFFONT_ENCODING_BUILTIN) {
for (int charcode = 0; charcode < 256; charcode++) {
const FX_CHAR* name =
GetAdobeCharName(baseEncoding, m_CharNames, charcode);
if (name)
m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name);
}
} else if (FT_UseTTCharmap(m_Font.GetFace(), 1, 0)) {
for (int charcode = 0; charcode < 256; charcode++) {
m_Encoding.m_Unicodes[charcode] =
FT_UnicodeFromCharCode(FXFT_ENCODING_APPLE_ROMAN, charcode);
}
}
return;
}
}
if (FT_UseTTCharmap(m_Font.GetFace(), 1, 0)) {
bool bFound = false;
for (int charcode = 0; charcode < 256; charcode++) {
m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), charcode);
m_Encoding.m_Unicodes[charcode] =
FT_UnicodeFromCharCode(FXFT_ENCODING_APPLE_ROMAN, charcode);
if (m_GlyphIndex[charcode]) {
bFound = true;
}
}
if (m_pFontFile || bFound)
return;
}
if (FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE) == 0) {
bool bFound = false;
const uint16_t* pUnicodes = PDF_UnicodesForPredefinedCharSet(baseEncoding);
for (int charcode = 0; charcode < 256; charcode++) {
if (m_pFontFile) {
m_Encoding.m_Unicodes[charcode] = charcode;
} else {
const FX_CHAR* name = GetAdobeCharName(0, m_CharNames, charcode);
if (name)
m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name);
else if (pUnicodes)
m_Encoding.m_Unicodes[charcode] = pUnicodes[charcode];
}
m_GlyphIndex[charcode] = FXFT_Get_Char_Index(
m_Font.GetFace(), m_Encoding.m_Unicodes[charcode]);
if (m_GlyphIndex[charcode])
bFound = true;
}
if (bFound)
return;
}
for (int charcode = 0; charcode < 256; charcode++)
m_GlyphIndex[charcode] = charcode;
}
int CPDF_CIDFont::GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) {
if (pVertGlyph)
*pVertGlyph = false;
if (!m_pFontFile && !m_pStreamAcc) {
uint16_t cid = CIDFromCharCode(charcode);
FX_WCHAR unicode = 0;
if (m_bCIDIsGID) {
#if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
return cid;
#else
if (m_Flags & FXFONT_SYMBOLIC)
return cid;
CFX_WideString uni_str = UnicodeFromCharCode(charcode);
if (uni_str.IsEmpty())
return cid;
unicode = uni_str.GetAt(0);
#endif
} else {
if (cid && m_pCID2UnicodeMap && m_pCID2UnicodeMap->IsLoaded())
unicode = m_pCID2UnicodeMap->UnicodeFromCID(cid);
if (unicode == 0)
unicode = GetUnicodeFromCharCode(charcode);
if (unicode == 0) {
CFX_WideString unicode_str = UnicodeFromCharCode(charcode);
if (!unicode_str.IsEmpty())
unicode = unicode_str.GetAt(0);
}
}
FXFT_Face face = m_Font.GetFace();
if (unicode == 0) {
if (!m_bAdobeCourierStd)
return charcode ? static_cast<int>(charcode) : -1;
charcode += 31;
bool bMSUnicode = FT_UseTTCharmap(face, 3, 1);
bool bMacRoman = !bMSUnicode && FT_UseTTCharmap(face, 1, 0);
int iBaseEncoding = PDFFONT_ENCODING_STANDARD;
if (bMSUnicode)
iBaseEncoding = PDFFONT_ENCODING_WINANSI;
else if (bMacRoman)
iBaseEncoding = PDFFONT_ENCODING_MACROMAN;
const FX_CHAR* name = GetAdobeCharName(
iBaseEncoding, std::vector<CFX_ByteString>(), charcode);
if (!name)
return charcode ? static_cast<int>(charcode) : -1;
int index = 0;
uint16_t name_unicode = PDF_UnicodeFromAdobeName(name);
if (!name_unicode)
return charcode ? static_cast<int>(charcode) : -1;
if (iBaseEncoding == PDFFONT_ENCODING_STANDARD)
return FXFT_Get_Char_Index(face, name_unicode);
if (iBaseEncoding == PDFFONT_ENCODING_WINANSI) {
index = FXFT_Get_Char_Index(face, name_unicode);
} else {
ASSERT(iBaseEncoding == PDFFONT_ENCODING_MACROMAN);
uint32_t maccode =
FT_CharCodeFromUnicode(FXFT_ENCODING_APPLE_ROMAN, name_unicode);
index = maccode ? FXFT_Get_Char_Index(face, maccode)
: FXFT_Get_Name_Index(face, const_cast<char*>(name));
}
if (index == 0 || index == 0xffff)
return charcode ? static_cast<int>(charcode) : -1;
return index;
}
if (m_Charset == CIDSET_JAPAN1) {
if (unicode == '\\') {
unicode = '/';
#if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
} else if (unicode == 0xa5) {
unicode = 0x5c;
#endif
}
}
if (!face)
return unicode;
int err = FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE);
if (err) {
int i;
for (i = 0; i < FXFT_Get_Face_CharmapCount(face); i++) {
uint32_t ret = FT_CharCodeFromUnicode(
FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i]),
static_cast<FX_WCHAR>(charcode));
if (ret == 0)
continue;
FXFT_Set_Charmap(face, FXFT_Get_Face_Charmaps(face)[i]);
unicode = static_cast<FX_WCHAR>(ret);
break;
}
if (i == FXFT_Get_Face_CharmapCount(face) && i) {
FXFT_Set_Charmap(face, FXFT_Get_Face_Charmaps(face)[0]);
unicode = static_cast<FX_WCHAR>(charcode);
}
}
if (FXFT_Get_Face_Charmap(face)) {
int index = GetGlyphIndex(unicode, pVertGlyph);
return index != 0 ? index : -1;
}
return unicode;
}
if (!m_Font.GetFace())
return -1;
uint16_t cid = CIDFromCharCode(charcode);
if (!m_pStreamAcc) {
if (m_bType1)
return cid;
if (m_pFontFile && !m_pCMap->m_pMapping)
return cid;
if (m_pCMap->m_Coding == CIDCODING_UNKNOWN ||
!FXFT_Get_Face_Charmap(m_Font.GetFace())) {
return cid;
}
if (FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmap(m_Font.GetFace())) ==
FXFT_ENCODING_UNICODE) {
CFX_WideString unicode_str = UnicodeFromCharCode(charcode);
if (unicode_str.IsEmpty())
return -1;
charcode = unicode_str.GetAt(0);
}
return GetGlyphIndex(charcode, pVertGlyph);
}
uint32_t byte_pos = cid * 2;
if (byte_pos + 2 > m_pStreamAcc->GetSize())
return -1;
const uint8_t* pdata = m_pStreamAcc->GetData() + byte_pos;
return pdata[0] * 256 + pdata[1];
}
