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// pdfstream.hh -- image streams producing PDF files
// Copyright (C) 2008 SEIKO EPSON CORPORATION
//
// This file is part of the 'iscan' program.
//
// The 'iscan' program is free-ish software.
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation;
// either version 2 of the License or at your option any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of FITNESS
// FOR A PARTICULAR PURPOSE or MERCHANTABILITY.
// See the GNU General Public License for more details.
//
// You should have received a verbatim copy of the GNU General Public
// License along with this program; if not, write to:
//
// Free Software Foundation, Inc.
// 59 Temple Place, Suite 330
// Boston, MA 02111-1307 USA
//
// As a special exception, the copyright holders give permission
// to link the code of this program with the esmod library and
// distribute linked combinations including the two. You must obey
// the GNU General Public License in all respects for all of the
// code used other than esmod.
#ifndef iscan_pdfstream_hh_included
#define iscan_pdfstream_hh_included
#ifndef __cplusplus
#error "This is a C++ header file; use a C++ compiler to compile it."
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imgstream.hh"
#include "pdf/writer.hh"
#include "pdf/dictionary.hh"
#include "pdf/array.hh"
#include "pdf/primitive.hh"
#include "fax-encoder.hh"
#include <string>
namespace iscan
{
using std::string;
class pdfstream : public imgstream
{
public:
typedef basic_imgstream::byte_type byte_type;
typedef basic_imgstream::size_type size_type;
private:
bool _need_page_trailer;
size_type _data_size;
size_type _pdf_h_sz; // scaled size to fit on a page at 72 dpi
size_type _pdf_v_sz; // but better to set the dpi in the PDF file,
// there is some way to do that, I read it in the spec!
pdf::writer *_doc;
pdf::dictionary *_pages;
pdf::array *_page_list;
pdf::dictionary *_trailer;
size_type _row;
pdf::primitive *_img_height_obj;
basic_imgstream *_stream;
FILE *_file;
bool _do_jpeg;
fax_encoder *_g3;
bool _rotate_180;
public:
static bool is_usable ();
explicit pdfstream (FILE *fp, bool match_direction = false);
virtual ~pdfstream ();
virtual imgstream& write (const byte_type *line, size_type n);
virtual void next ();
virtual void rotate_180 (bool yes);
private:
void init();
void write_header ();
void write_page_header ();
void write_page_trailer ();
void write_image_object (pdf::dictionary& image, std::string name);
};
} // namespace iscan
#endif /* iscan_pdfstream_hh_included */
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