panner_interface.h

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/*
    Copyright (C) 2011 Paul Davis

    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
    (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
    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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __gtk_ardour_panner_interface_h__
#define __gtk_ardour_panner_interface_h__

#include <boost/shared_ptr.hpp>
#include <gtkmm/drawingarea.h>
#include <gtkmm/label.h>
#include "gtkmm2ext/persistent_tooltip.h"
#include "pbd/destructible.h"

namespace ARDOUR {
        class Panner;
}

class PannerEditor;

class PannerPersistentTooltip : public Gtkmm2ext::PersistentTooltip
{
public:
        PannerPersistentTooltip (Gtk::Widget* w);

        void target_start_drag ();
        void target_stop_drag ();

        bool dragging () const;

private:
        bool _dragging;
};
        

class PannerInterface : public Gtk::DrawingArea, public PBD::Destructible
{
public:
        PannerInterface (boost::shared_ptr<ARDOUR::Panner>);
        virtual ~PannerInterface ();

        boost::shared_ptr<ARDOUR::Panner> panner () {
                return _panner;
        }

        void edit ();
        void set_send_drawing_mode (bool);

protected:
        virtual void set_tooltip () = 0;

        void value_change ();
        
        bool on_enter_notify_event (GdkEventCrossing *);
        bool on_leave_notify_event (GdkEventCrossing *);
        bool on_key_release_event  (GdkEventKey *);
        bool on_button_press_event (GdkEventButton*);
        bool on_button_release_event (GdkEventButton*);

        boost::shared_ptr<ARDOUR::Panner> _panner;
        PannerPersistentTooltip _tooltip;

        bool _send_mode;

private:
        virtual PannerEditor* editor () = 0;
        PannerEditor* _editor;
};

#endif