| // 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_unicodeencodingex.h" |
| |
| #include "core/fpdfapi/font/cpdf_font.h" |
| #include "core/fxge/fx_font.h" |
| #include "core/fxge/fx_freetype.h" |
| |
| namespace { |
| |
| const uint32_t g_EncodingID[] = { |
| FXFM_ENCODING_MS_SYMBOL, FXFM_ENCODING_UNICODE, |
| FXFM_ENCODING_MS_SJIS, FXFM_ENCODING_MS_GB2312, |
| FXFM_ENCODING_MS_BIG5, FXFM_ENCODING_MS_WANSUNG, |
| FXFM_ENCODING_MS_JOHAB, FXFM_ENCODING_ADOBE_STANDARD, |
| FXFM_ENCODING_ADOBE_EXPERT, FXFM_ENCODING_ADOBE_CUSTOM, |
| FXFM_ENCODING_ADOBE_LATIN_1, FXFM_ENCODING_OLD_LATIN_2, |
| FXFM_ENCODING_APPLE_ROMAN, |
| }; |
| |
| CFX_UnicodeEncodingEx* FXFM_CreateFontEncoding(CFX_Font* pFont, |
| uint32_t nEncodingID) { |
| if (FXFT_Select_Charmap(pFont->GetFace(), nEncodingID)) |
| return nullptr; |
| return new CFX_UnicodeEncodingEx(pFont, nEncodingID); |
| } |
| |
| } // namespace |
| |
| CFX_UnicodeEncodingEx::CFX_UnicodeEncodingEx(CFX_Font* pFont, |
| uint32_t EncodingID) |
| : CFX_UnicodeEncoding(pFont), m_nEncodingID(EncodingID) {} |
| |
| CFX_UnicodeEncodingEx::~CFX_UnicodeEncodingEx() {} |
| |
| uint32_t CFX_UnicodeEncodingEx::GlyphFromCharCode(uint32_t 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) { |
| uint32_t 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; |
| } |
| |
| uint32_t CFX_UnicodeEncodingEx::CharCodeFromUnicode(FX_WCHAR Unicode) const { |
| if (m_nEncodingID == FXFM_ENCODING_UNICODE || |
| m_nEncodingID == FXFM_ENCODING_MS_SYMBOL) { |
| return Unicode; |
| } |
| FXFT_Face face = m_pFont->GetFace(); |
| int nmaps = FXFT_Get_Face_CharmapCount(face); |
| for (int i = 0; i < nmaps; i++) { |
| int nEncodingID = |
| FXFT_Get_Charmap_Encoding(FXFT_Get_Face_Charmaps(face)[i]); |
| if (nEncodingID == FXFM_ENCODING_UNICODE || |
| nEncodingID == FXFM_ENCODING_MS_SYMBOL) { |
| return Unicode; |
| } |
| } |
| return CPDF_Font::kInvalidCharCode; |
| } |
| |
| CFX_UnicodeEncodingEx* FX_CreateFontEncodingEx(CFX_Font* pFont, |
| uint32_t nEncodingID) { |
| if (!pFont || !pFont->GetFace()) |
| return nullptr; |
| |
| if (nEncodingID != FXFM_ENCODING_NONE) |
| return FXFM_CreateFontEncoding(pFont, nEncodingID); |
| |
| for (size_t i = 0; i < FX_ArraySize(g_EncodingID); ++i) { |
| CFX_UnicodeEncodingEx* pFontEncoding = |
| FXFM_CreateFontEncoding(pFont, g_EncodingID[i]); |
| if (pFontEncoding) |
| return pFontEncoding; |
| } |
| return nullptr; |
| } |