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OpenBoard/src/pdf-merger/RotationHandler.h

76 lines
2.5 KiB

/*
* Copyright (C) 2012 Webdoc SA
*
* This file is part of Open-Sankoré.
*
* Open-Sankoré is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation, version 2,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* Open-Sankoré is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with Open-Sankoré; if not, see
* <http://www.gnu.org/licenses/>.
*/
#if !defined RotationHandler_h
#define RotationHandler_h
#include <QtGlobal>
#include "PageElementHandler.h"
#include "Page.h"
namespace merge_lib
{
//This class remove field from Page object's content.
class RotationHandler: public PageElementHandler
{
public:
RotationHandler(Object * page, const std::string & handlerName, Page & basePage):
PageElementHandler(page),
_basePage(basePage)
{
_setHandlerName(handlerName);
}
virtual ~RotationHandler()
{
}
private:
//methods
virtual void _processObjectContent(unsigned int startOfPageElement)
{
unsigned int endOfElement = _findEndOfElementContent(startOfPageElement);
std::string rotationField = _page->getObjectContent().substr(startOfPageElement, endOfElement - startOfPageElement);
std::string numbers("1234567890");
unsigned int startOfNumber = rotationField.find_first_of(numbers);
if( startOfNumber > 0 )
{
if( rotationField[startOfNumber-1] == '-' )
{
startOfNumber--; // negative number
}
}
unsigned int endOfNumber = rotationField.find_first_not_of(numbers, startOfNumber + 1);
std::string rotationStr = rotationField.substr(startOfNumber, endOfNumber - startOfNumber + 1);
int rotation = 0;
std::stringstream strin(rotationStr);
strin>>rotation;
_basePage.setRotation(rotation);
}
virtual void _changeObjectContent(unsigned int startOfPageElement) {Q_UNUSED(startOfPageElement);};
//members
Page & _basePage;
};
}
#endif