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122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2023
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#include "PdfFont.h"
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bool IsNeedCMap(PDFDoc* pDoc)
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{
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for (int nPage = 1, nLastPage = pDoc->getNumPages(); nPage <= nLastPage; ++nPage)
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{
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Page* pPage = pDoc->getCatalog()->getPage(nPage);
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Dict* pResources = pPage->getResourceDict();
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if (pResources && scanFonts(pResources, arrCMap, 0, arrUniqueResources))
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return true;
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Object oAnnots;
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if (!pPage->getAnnots(&oAnnots)->isArray())
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{
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oAnnots.free();
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continue;
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}
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for (int i = 0, nNum = oAnnots.arrayGetLength(); i < nNum; ++i)
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{
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Object oAnnot;
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if (!oAnnots.arrayGet(i, &oAnnot)->isDict())
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{
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oAnnot.free();
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continue;
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}
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Object oRefDR;
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if (oAnnot.dictLookupNF("DR", &oRefDR)->isRef() && std::find(arrUniqueResources.begin(), arrUniqueResources.end(), oRefDR.getRef().num) != arrUniqueResources.end())
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{
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oRefDR.free(); oAnnot.free();
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continue;
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}
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arrUniqueResources.push_back(oRefDR.getRef().num);
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oRefDR.free();
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Object oDR;
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if (oAnnot.dictLookup("DR", &oDR)->isDict() && scanFonts(oDR.getDict(), arrCMap, 0, arrUniqueResources))
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{
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oDR.free(); oAnnot.free(); oAnnots.free();
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return true;
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}
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oDR.free();
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if (scanAPfonts(&oAnnot, arrCMap, arrUniqueResources))
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{
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oAnnot.free(); oAnnots.free();
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return true;
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}
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oAnnot.free();
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}
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oAnnots.free();
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}
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AcroForm* pAcroForms = pDoc->getCatalog()->getForm();
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if (!pAcroForms)
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continue;
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Object oDR;
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Object* oAcroForm = pAcroForms->getAcroFormObj();
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if (oAcroForm->dictLookup("DR", &oDR)->isDict() && scanFonts(oDR.getDict(), arrCMap, 0, arrUniqueResources))
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{
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oDR.free();
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return true;
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}
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oDR.free();
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for (int i = 0, nNum = pAcroForms->getNumFields(); i < nNum; ++i)
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{
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AcroFormField* pField = pAcroForms->getField(i);
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if (pField->getResources(&oDR)->isDict() && scanFonts(oDR.getDict(), arrCMap, 0, arrUniqueResources))
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{
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oDR.free();
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return true;
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}
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oDR.free();
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Object oWidgetRef, oWidget;
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pField->getFieldRef(&oWidgetRef);
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oWidgetRef.fetch(pDoc->getXRef(), &oWidget);
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oWidgetRef.free();
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if (scanAPfonts(&oWidget, arrCMap, arrUniqueResources))
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{
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oWidget.free();
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return true;
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}
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oWidget.free();
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}
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}
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