group_tabs.h

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/*
    Copyright (C) 2009 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.

*/

#include <gtkmm/menu.h>
#include "editor_component.h"
#include "gtkmm2ext/cairo_widget.h"

namespace ARDOUR {
        class Session;
        class RouteGroup;
}

class Editor;

class GroupTabs : public CairoWidget, public ARDOUR::SessionHandlePtr
{
public:
        GroupTabs ();
        virtual ~GroupTabs ();

        void set_session (ARDOUR::Session *);

        Gtk::Menu* get_menu (ARDOUR::RouteGroup* g);

        void run_new_group_dialog (ARDOUR::RouteList const &);

        static void set_group_color (ARDOUR::RouteGroup *, uint32_t);
        static std::string group_gui_id (ARDOUR::RouteGroup *);
        static uint32_t group_color (ARDOUR::RouteGroup *);

protected:

        struct Tab {
                Tab () : group (0) {}

                double from;
                double to;
                uint32_t color; 
                ARDOUR::RouteGroup* group; 
        };

private:
        static void emit_gui_changed_for_members (ARDOUR::RouteGroup *);
        
        virtual std::list<Tab> compute_tabs () const = 0;

        virtual void draw_tab (cairo_t* cr, Tab const & t) const = 0;

        virtual double primary_coordinate (double, double) const = 0;

        virtual ARDOUR::RouteList routes_for_tab (Tab const * t) const = 0;

        virtual double extent () const = 0;

        virtual void add_menu_items (Gtk::Menu *, ARDOUR::RouteGroup *) {}
        virtual PBD::PropertyList default_properties () const;
        virtual ARDOUR::RouteList selected_routes () const = 0;
        virtual void sync_order_keys () = 0;

        void new_from_selection ();
        void new_from_rec_enabled ();
        void new_from_soloed ();
        ARDOUR::RouteGroup* create_and_add_group () const;
        void collect (ARDOUR::RouteGroup *);
        void set_activation (ARDOUR::RouteGroup *, bool);
        void edit_group (ARDOUR::RouteGroup *);
        void subgroup (ARDOUR::RouteGroup *, bool, ARDOUR::Placement);
        void un_subgroup (ARDOUR::RouteGroup *);
        void activate_all ();
        void disable_all ();
        void remove_group (ARDOUR::RouteGroup *);

        void render (cairo_t *, cairo_rectangle_t*);
        void on_size_request (Gtk::Requisition *);
        bool on_button_press_event (GdkEventButton *);
        bool on_motion_notify_event (GdkEventMotion *);
        bool on_button_release_event (GdkEventButton *);

        Tab * click_to_tab (double, std::list<Tab>::iterator *, std::list<Tab>::iterator *);

        void route_group_property_changed (ARDOUR::RouteGroup *);
        void route_added_to_route_group (ARDOUR::RouteGroup *, boost::weak_ptr<ARDOUR::Route>);
        void route_removed_from_route_group (ARDOUR::RouteGroup *, boost::weak_ptr<ARDOUR::Route>);

        Gtk::Menu* _menu;
        std::list<Tab> _tabs; 
        Tab* _dragging; 

        ARDOUR::RouteList _initial_dragging_routes;
        bool _dragging_new_tab; 
        bool _drag_moved; 
        double _drag_fixed; 
        double _drag_moving; 
        double _drag_offset; 
        double _drag_min; 
        double _drag_max; 
        double _drag_first; 

        static std::list<Gdk::Color> _used_colors;
};