button_joiner.h

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/*
    Copyright (C) 2012 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 __gtk2_ardour_button_joiner_h__
#define __gtk2_ardour_button_joiner_h__

#include <gtkmm/box.h>
#include <gtkmm/alignment.h>
#include <gtkmm/action.h>

#include "gtkmm2ext/activatable.h"
#include "gtkmm2ext/cairo_widget.h"

class ButtonJoiner : public CairoWidget, public Gtkmm2ext::Activatable {
  public:
        ButtonJoiner (const std::string&, Gtk::Widget&, Gtk::Widget&, bool central_link = false);
        ~ButtonJoiner ();

        void set_related_action (Glib::RefPtr<Gtk::Action>);    
        void set_active_state (Gtkmm2ext::ActiveState);

  protected:
        void render (cairo_t*, cairo_rectangle_t*);
        bool on_button_release_event (GdkEventButton*);
        void on_size_request (Gtk::Requisition*);
        void on_size_allocate (Gtk::Allocation&);

        void action_sensitivity_changed ();
        void action_visibility_changed ();
        void action_tooltip_changed ();
        void action_toggled ();

  private:
        Gtk::Widget&   left;
        Gtk::Widget&   right;
        Gtk::HBox      packer;
        Gtk::Alignment align;
        std::string    name;
        cairo_pattern_t* active_fill_pattern;
        cairo_pattern_t* inactive_fill_pattern;
        bool           central_link;
        double         border_r;
        double         border_g;
        double         border_b;
        void set_colors ();
};

#endif /* __gtk2_ardour_button_joiner_h__ */