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/fxge/fx_font.h"
10 #include "core/fxge/fx_freetype.h"
11 
CFX_UnicodeEncoding(CFX_Font * pFont)12 CFX_UnicodeEncoding::CFX_UnicodeEncoding(CFX_Font* pFont) : m_pFont(pFont) {}
13 
~CFX_UnicodeEncoding()14 CFX_UnicodeEncoding::~CFX_UnicodeEncoding() {}
15 
GlyphFromCharCode(uint32_t charcode)16 uint32_t CFX_UnicodeEncoding::GlyphFromCharCode(uint32_t charcode) {
17   FXFT_Face face = m_pFont->GetFace();
18   if (!face)
19     return charcode;
20 
21   if (FXFT_Select_Charmap(face, FXFT_ENCODING_UNICODE) == 0)
22     return FXFT_Get_Char_Index(face, charcode);
23 
24   if (m_pFont->GetSubstFont() &&
25       m_pFont->GetSubstFont()->m_Charset == FXFONT_SYMBOL_CHARSET) {
26     uint32_t index = 0;
27     if (FXFT_Select_Charmap(face, FXFT_ENCODING_MS_SYMBOL) == 0)
28       index = FXFT_Get_Char_Index(face, charcode);
29     if (!index && !FXFT_Select_Charmap(face, FXFT_ENCODING_APPLE_ROMAN))
30       return FXFT_Get_Char_Index(face, charcode);
31   }
32   return charcode;
33 }
34