editor_summary.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.

*/

#ifndef __gtk_ardour_editor_summary_h__
#define __gtk_ardour_editor_summary_h__

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

namespace ARDOUR {
        class Session;
}

class Editor;

class EditorSummary : public CairoWidget, public EditorComponent, public ARDOUR::SessionHandlePtr, public PBD::ScopedConnectionList
{
public:
        EditorSummary (Editor *);
        ~EditorSummary ();

        void set_session (ARDOUR::Session *);
        void set_overlays_dirty ();
        void set_background_dirty ();
        void routes_added (std::list<RouteTimeAxisView*> const &);

private:
        void parameter_changed (std::string);
        void on_size_allocate (Gtk::Allocation& alloc);

        enum Position {
                LEFT,
                LEFT_TOP,
                TOP,
                RIGHT_TOP,
                RIGHT,
                RIGHT_BOTTOM,
                BOTTOM,
                LEFT_BOTTOM,
                INSIDE,
                BELOW_OR_ABOVE,
                TO_LEFT_OR_RIGHT,
                OTHERWISE_OUTSIDE
        };
      
        void on_size_request (Gtk::Requisition *);
        bool on_button_press_event (GdkEventButton *);
        bool on_button_release_event (GdkEventButton *);
        bool on_motion_notify_event (GdkEventMotion *);
        bool on_scroll_event (GdkEventScroll *);
        bool on_key_press_event (GdkEventKey*);
        bool on_key_release_event (GdkEventKey*);
        bool on_enter_notify_event (GdkEventCrossing*); 
        bool on_leave_notify_event (GdkEventCrossing*); 

        void centre_on_click (GdkEventButton *);
        void render (cairo_t *, cairo_rectangle_t*);
        void render_region (RegionView*, cairo_t*, double) const;
        void get_editor (std::pair<double, double> *, std::pair<double, double> *) const;
        void set_editor (double, double);
        void set_editor (std::pair<double, double>, double);
        void set_editor (std::pair<double, double>, std::pair<double, double>);
        void set_editor_x (double);
        void set_editor_x (std::pair<double, double>);
        void set_editor_y (double);
        void set_editor_y (std::pair<double, double>);
        void playhead_position_changed (framepos_t);
        double summary_y_to_editor (double) const;
        double editor_y_to_summary (double) const;
        Position get_position (double, double) const;
        void set_cursor (Position);
        void route_gui_changed (std::string);
        bool suspending_editor_updates () const;
        double playhead_frame_to_position (framepos_t) const;
        framepos_t position_to_playhead_frame_to_position (double pos) const;
        void set_overlays_dirty (int, int, int, int);

        framepos_t _start; 
        framepos_t _end; 

        double _overhang_fraction;

        double _x_scale; 
        double _track_height;
        double _last_playhead;

        std::pair<double, double> _start_editor_x;
        std::pair<double, double> _start_editor_y;
        double _start_mouse_x;
        double _start_mouse_y;

        Position _start_position;

        bool _move_dragging;
        bool _moved;
        std::pair<double, double> _view_rectangle_x;
        std::pair<double, double> _view_rectangle_y;

        std::pair<double, double> _pending_editor_x;
        std::pair<double, double> _pending_editor_y;
        bool _pending_editor_changed;

        bool _zoom_dragging;
        Position _zoom_position;

        bool _old_follow_playhead;
        cairo_surface_t* _image;
        void render_background_image ();
        bool _background_dirty;

        PBD::ScopedConnectionList position_connection;
        PBD::ScopedConnection route_ctrl_id_connection;
        PBD::ScopedConnectionList region_property_connection;
};

#endif