Home | History | Annotate | Download | only in fpdfdoc 
      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/fpdfdoc/cpvt_fontmap.h"
      8 
      9 #include "core/fpdfapi/font/cpdf_font.h"
     10 #include "core/fpdfapi/parser/cpdf_dictionary.h"
     11 #include "core/fpdfapi/parser/cpdf_document.h"
     12 #include "core/fpdfapi/parser/cpdf_reference.h"
     13 #include "core/fpdfdoc/cpdf_interform.h"
     14 #include "core/fxcrt/fx_codepage.h"
     15 #include "third_party/base/logging.h"
     16 
     17 CPVT_FontMap::CPVT_FontMap(CPDF_Document* pDoc,
     18                            CPDF_Dictionary* pResDict,
     19                            CPDF_Font* pDefFont,
     20                            const ByteString& sDefFontAlias)
     21     : m_pDocument(pDoc),
     22       m_pResDict(pResDict),
     23       m_pDefFont(pDefFont),
     24       m_sDefFontAlias(sDefFontAlias) {}
     25 
     26 CPVT_FontMap::~CPVT_FontMap() {}
     27 
     28 CPDF_Font* CPVT_FontMap::GetAnnotSysPDFFont(CPDF_Document* pDoc,
     29                                             const CPDF_Dictionary* pResDict,
     30                                             ByteString* sSysFontAlias) {
     31   if (!pDoc || !pResDict)
     32     return nullptr;
     33 
     34   CPDF_Dictionary* pFormDict = pDoc->GetRoot()->GetDictFor("AcroForm");
     35   CPDF_Font* pPDFFont = AddNativeInterFormFont(pFormDict, pDoc, sSysFontAlias);
     36   if (!pPDFFont)
     37     return nullptr;
     38 
     39   CPDF_Dictionary* pFontList = pResDict->GetDictFor("Font");
     40   if (pFontList && !pFontList->KeyExist(*sSysFontAlias)) {
     41     pFontList->SetNewFor<CPDF_Reference>(*sSysFontAlias, pDoc,
     42                                          pPDFFont->GetFontDict()->GetObjNum());
     43   }
     44   return pPDFFont;
     45 }
     46 
     47 CPDF_Font* CPVT_FontMap::GetPDFFont(int32_t nFontIndex) {
     48   switch (nFontIndex) {
     49     case 0:
     50       return m_pDefFont.Get();
     51     case 1:
     52       if (!m_pSysFont) {
     53         m_pSysFont = GetAnnotSysPDFFont(m_pDocument.Get(), m_pResDict.Get(),
     54                                         &m_sSysFontAlias);
     55       }
     56       return m_pSysFont.Get();
     57     default:
     58       return nullptr;
     59   }
     60 }
     61 
     62 ByteString CPVT_FontMap::GetPDFFontAlias(int32_t nFontIndex) {
     63   switch (nFontIndex) {
     64     case 0:
     65       return m_sDefFontAlias;
     66     case 1:
     67       if (!m_pSysFont) {
     68         m_pSysFont = GetAnnotSysPDFFont(m_pDocument.Get(), m_pResDict.Get(),
     69                                         &m_sSysFontAlias);
     70       }
     71       return m_sSysFontAlias;
     72     default:
     73       return ByteString();
     74   }
     75 }
     76 
     77 int32_t CPVT_FontMap::GetWordFontIndex(uint16_t word,
     78                                        int32_t charset,
     79                                        int32_t nFontIndex) {
     80   NOTREACHED();
     81   return 0;
     82 }
     83 
     84 int32_t CPVT_FontMap::CharCodeFromUnicode(int32_t nFontIndex, uint16_t word) {
     85   NOTREACHED();
     86   return 0;
     87 }
     88 
     89 int32_t CPVT_FontMap::CharSetFromUnicode(uint16_t word, int32_t nOldCharset) {
     90   NOTREACHED();
     91   return FX_CHARSET_ANSI;
     92 }
     93