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88 lines
2.9 KiB
88 lines
2.9 KiB
/*
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* Copyright (C) 2015-2022 Département de l'Instruction Publique (DIP-SEM)
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*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined AbstractBoxElementHandler_h
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#define AbstractBoxElementHandler_h
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#include "PageElementHandler.h"
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namespace merge_lib
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{
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//class for processing MediaBox field of Page object
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class AbstractBoxElementHandler: public PageElementHandler
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{
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public:
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AbstractBoxElementHandler(Object * page): PageElementHandler(page)
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{
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}
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virtual ~AbstractBoxElementHandler()
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{
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}
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protected:
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void _retrieveBoxFromParent()
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{
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std::string content = _page->getObjectContent();
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std::string mediaBox;
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Object * parent = _page;
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while(1)
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{
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unsigned int startOfParent = content.find("/Parent");
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unsigned int endOfParent = content.find(" R", startOfParent);
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if((int)startOfParent == -1)
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break;
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std::vector <Object *> parents = parent->getChildrenByBounds(startOfParent, endOfParent);
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if(parents.size() != 1)
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break;
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parent = parents[0];
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std::string parentContent = parent->getObjectContent();
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unsigned int startOfMediaBox = parentContent.find(_handlerName);
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if((int)startOfMediaBox == -1)
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{
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content = parentContent;
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continue;
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}
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unsigned int endOfMediaBox = parentContent.find("]", startOfMediaBox);
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mediaBox = parentContent.substr(startOfMediaBox, endOfMediaBox - startOfMediaBox + 1);
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break;
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}
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if(!mediaBox.empty())
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{
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unsigned int startOfMediaBox = _page->getObjectContent().rfind(">>");
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_page->insertToContent(startOfMediaBox, mediaBox);
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_changeObjectContent(startOfMediaBox);
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}
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}
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private:
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virtual void _changeObjectContent(unsigned int startOfPageElement) = 0;
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};
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}
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#endif
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