1 // Copyright 2016 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #include "core/fxge/cfx_unicodeencoding.h"
8 
9 #include "core/fxcrt/fx_codepage.h"
10 #include "core/fxge/cfx_font.h"
11 #include "core/fxge/cfx_substfont.h"
12 #include "core/fxge/fx_font.h"
13 #include "core/fxge/fx_freetype.h"
14 
CFX_UnicodeEncoding(CFX_Font * pFont)15 CFX_UnicodeEncoding::CFX_UnicodeEncoding(CFX_Font* pFont) : m_pFont(pFont) {}
16 
~CFX_UnicodeEncoding()17 CFX_UnicodeEncoding::~CFX_UnicodeEncoding() {}
18 
GlyphFromCharCode(uint32_t charcode)19 uint32_t CFX_UnicodeEncoding::GlyphFromCharCode(uint32_t charcode) {
20   FXFT_FaceRec* face = m_pFont->GetFaceRec();
21   if (!face)
22     return charcode;
23 
24   if (FT_Select_Charmap(face, FT_ENCODING_UNICODE) == 0)
25     return FT_Get_Char_Index(face, charcode);
26 
27   if (m_pFont->GetSubstFont() &&
28       m_pFont->GetSubstFont()->m_Charset == FX_CHARSET_Symbol) {
29     uint32_t index = 0;
30     if (FT_Select_Charmap(face, FT_ENCODING_MS_SYMBOL) == 0)
31       index = FT_Get_Char_Index(face, charcode);
32     if (!index && !FT_Select_Charmap(face, FT_ENCODING_APPLE_ROMAN))
33       return FT_Get_Char_Index(face, charcode);
34   }
35   return charcode;
36 }
37