Export.h

/*
Copyright (C) 2000,2001 Stefan Duffner

This program is free 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 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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
/*
Qt 4 Port by Rainer Strobel

in method writeHeader:
one of the .latin1() calls did not exist
*/

#ifndef EXPORT_H
#define EXPORT_H

#include <QObject>
#include <fstream>
#include <qstring.h>

class Machine;
class Options;
class ScrollView;

/**
 * @class Export
 * @brief Base class for all export classes.
 *
 */

class Export : public QObject {
  Q_OBJECT

public:
  Export(Options *opt);
  virtual ~Export();

  // void init(std::ofstream* ,Machine*, QString fn=QString::null, ScrollView*
  // sv=NULL);
  void init(std::ostream *, Machine *, QString fn = QString::null,
            ScrollView *sv = NULL);
  /// Does the actual exporting
  virtual void doExport() = 0;
  /// Returns the appropriate filter string for the file dialog.
  virtual QString fileFilter() = 0;
  /// Verifies if the machine is in a valid form for exporting
  virtual bool validateMachine(Machine *) { return true; };
  /// Returns the default file extension
  virtual QString defaultExtension() = 0;

protected:
  /// Output stream
  // std::ofstream* out;
  std::ostream *out;
  /// Pointer to the machine that shall be exported
  Machine *machine;
  /// Application options
  Options *options;
  /// Output filename (only used for EPS and SVG export)
  QString fileName;
  /// ScrollView pointer (only used for EPS and SVG export);
  ScrollView *scrollview;

  /// Writes a comment to the top of the output stream
  virtual void writeHeader(QString commentstart, QString commentend = "");
};

#endif