/*

Copyright (C) 2011-2019 Michael Goffioul

This file is part of Octave.

Octave 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 3 of the License, or
(at your option) any later version.

Octave 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 Octave; see the file COPYING.  If not, see
<https://www.gnu.org/licenses/>.

*/

#if ! defined (octave_Backend_h)
#define octave_Backend_h 1

#include <QObject>

#include "event-manager.h"
#include "graphics.h"

namespace octave
{
  class interpreter;
}

namespace QtHandles
{
  class Object;
  class ObjectFactory;
  class ObjectProxy;

  class Backend :
  public QObject,
  public base_graphics_toolkit
  {
    Q_OBJECT

  public:

    Backend (octave::interpreter& interp);

    ~Backend (void);

    bool is_valid (void) const { return true; }

    void redraw_figure (const graphics_object& h) const;

    void show_figure (const graphics_object& h) const;

    void update (const graphics_object& obj, int pId);

    bool initialize (const graphics_object& obj);

    void finalize (const graphics_object& obj);

    void print_figure (const graphics_object& go,
                       const std::string& term,
                       const std::string& file_cmd,
                       const std::string& /*debug_file*/) const;

    uint8NDArray get_pixels (const graphics_object& go) const;

    Matrix get_text_extent (const graphics_object& go) const;

    static Object * toolkitObject (const graphics_object& go);

    static ObjectProxy * toolkitObjectProxy (const graphics_object& go);

  signals:
    void createObject (Backend *, double handle);

  public slots:

    void interpreter_event (const octave::fcn_callback& fcn);
    void interpreter_event (const octave::meth_callback& meth);

  private:

    octave::interpreter& m_interpreter;

    ObjectFactory *m_factory;
  };

}

#endif