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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/fxge/cfx_unicodeencoding.h"
#include "core/fxcrt/fx_codepage.h"
#include "core/fxge/cfx_font.h"
#include "core/fxge/cfx_substfont.h"
#include "core/fxge/freetype/fx_freetype.h"
#include "core/fxge/fx_font.h"
CFX_UnicodeEncoding::CFX_UnicodeEncoding(const CFX_Font* pFont)
: m_pFont(pFont) {}
CFX_UnicodeEncoding::~CFX_UnicodeEncoding() = default;
uint32_t CFX_UnicodeEncoding::GlyphFromCharCode(uint32_t charcode) {
FXFT_FaceRec* face = m_pFont->GetFaceRec();
if (!face)
return charcode;
if (FT_Select_Charmap(face, FT_ENCODING_UNICODE) == 0)
return FT_Get_Char_Index(face, charcode);
if (m_pFont->GetSubstFont() &&
m_pFont->GetSubstFont()->m_Charset == FX_Charset::kSymbol) {
uint32_t index = 0;
if (FT_Select_Charmap(face, FT_ENCODING_MS_SYMBOL) == 0)
index = FT_Get_Char_Index(face, charcode);
if (!index && !FT_Select_Charmap(face, FT_ENCODING_APPLE_ROMAN))
return FT_Get_Char_Index(face, charcode);
}
return charcode;
}