58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
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/* This file is part of Mapnik (c++ mapping toolkit)
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* Copyright (C) 2005 Artem Pavlenko
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*
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* Mapnik is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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//$Id$
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#ifndef IMAGE_READER_HH
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#define IMAGE_READER_HH
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#include "mapnik.hh"
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#include <stdexcept>
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namespace mapnik {
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class ImageReaderException : public std::exception
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{
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private:
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std::string message_;
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public:
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ImageReaderException(const std::string& message)
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: message_(message) {}
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~ImageReaderException() throw() {}
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virtual const char* what() const throw()
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{
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return message_.c_str();
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}
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};
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struct ImageReader
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{
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virtual unsigned width() const=0;
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virtual unsigned height() const=0;
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virtual void read(unsigned x,unsigned y,ImageData32& image)=0;
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virtual ~ImageReader() {}
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};
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typedef singleton<factory<ImageReader,std::string,
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ImageReader* (*)(const std::string&)> > ImageReaderFactory;
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}
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#endif //IMAGE_READER_HH
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