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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
#include "core/fpdfapi/fpdf_font/cpdf_truetypefont.h"
#include "core/fpdfapi/fpdf_font/font_int.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
#include "core/include/fxge/fx_font.h"
CPDF_TrueTypeFont::CPDF_TrueTypeFont() {}
bool CPDF_TrueTypeFont::IsTrueTypeFont() const {
return true;
}
const CPDF_TrueTypeFont* CPDF_TrueTypeFont::AsTrueTypeFont() const {
return this;
}
CPDF_TrueTypeFont* CPDF_TrueTypeFont::AsTrueTypeFont() {
return this;
}
FX_BOOL CPDF_TrueTypeFont::Load() {
return LoadCommon();
}
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_pCharNames) ||
(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->GetIntegerBy("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;
}
FX_BOOL bMSUnicode = FT_UseTTCharmap(m_Font.GetFace(), 3, 1);
FX_BOOL bMacRoman = FALSE, 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_pCharNames, 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) {
const uint8_t prefix[4] = {0x00, 0xf0, 0xf1, 0xf2};
for (int j = 0; j < 4; j++) {
uint16_t unicode = prefix[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) {
FX_DWORD 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)) {
const uint8_t prefix[4] = {0x00, 0xf0, 0xf1, 0xf2};
FX_BOOL bGotOne = FALSE;
for (int charcode = 0; charcode < 256; charcode++) {
for (int j = 0; j < 4; j++) {
uint16_t unicode = prefix[j] * 256 + charcode;
m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), unicode);
if (m_GlyphIndex[charcode]) {
bGotOne = TRUE;
break;
}
}
}
if (bGotOne) {
if (baseEncoding != PDFFONT_ENCODING_BUILTIN) {
for (int charcode = 0; charcode < 256; charcode++) {
const FX_CHAR* name =
GetAdobeCharName(baseEncoding, m_pCharNames, charcode);
if (!name) {
continue;
}
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)) {
FX_BOOL bGotOne = 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]) {
bGotOne = TRUE;
}
}
if (m_pFontFile || bGotOne) {
return;
}
}
if (FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE) == 0) {
FX_BOOL bGotOne = 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_pCharNames, 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]) {
bGotOne = TRUE;
}
}
if (bGotOne) {
return;
}
}
for (int charcode = 0; charcode < 256; charcode++) {
m_GlyphIndex[charcode] = charcode;
}
}
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