port_matrix_body.h

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/*
    Copyright (C) 2002-2009 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_port_matrix_body_h__
#define __gtk_ardour_port_matrix_body_h__

#include <gtkmm/eventbox.h>
#include "port_group.h"
#include "port_matrix_types.h"

class PortMatrix;
class PortMatrixColumnLabels;
class PortMatrixRowLabels;
class PortMatrixGrid;
class PortMatrixComponent;

class PortMatrixBody : public Gtk::EventBox
{
public:
        PortMatrixBody (PortMatrix *);
        ~PortMatrixBody ();

        void setup ();

        uint32_t full_scroll_width ();
        uint32_t alloc_scroll_width ();
        uint32_t full_scroll_height ();
        uint32_t alloc_scroll_height ();

        uint32_t xoffset () const {
                return _xoffset;
        }
        void set_xoffset (uint32_t);
        uint32_t yoffset () const {
                return _yoffset;
        }
        void set_yoffset (uint32_t);

        void rebuild_and_draw_grid ();

        void set_mouseover (PortMatrixNode const &);
        void set_mouseover (std::list<PortMatrixNode> const &);
        std::list<PortMatrixNode> mouseover () const {
                return _mouseover;
        }

        void highlight_associated_channels (int, ARDOUR::BundleChannel);
        void component_size_changed ();
        std::pair<uint32_t, uint32_t> max_size () const;

        uint32_t column_labels_border_x () const;
        uint32_t column_labels_height () const;

        sigc::signal<void> DimensionsChanged;

protected:
        bool on_expose_event (GdkEventExpose *);
        void on_size_request (Gtk::Requisition *);
        void on_size_allocate (Gtk::Allocation &);
        bool on_button_press_event (GdkEventButton *);
        bool on_button_release_event (GdkEventButton *);
        bool on_leave_notify_event (GdkEventCrossing *);
        bool on_motion_notify_event (GdkEventMotion *);

private:
        void compute_rectangles ();
        void rebuild_and_draw_column_labels ();
        void rebuild_and_draw_row_labels ();
        void update_bundles ();
        void set_cairo_clip (cairo_t *, Gdk::Rectangle const &) const;

        PortMatrix* _matrix;
        PortMatrixColumnLabels* _column_labels;
        PortMatrixRowLabels* _row_labels;
        PortMatrixGrid* _grid;
        std::list<PortMatrixComponent*> _components;

        uint32_t _alloc_width; 
        uint32_t _alloc_height; 
        uint32_t _xoffset;
        uint32_t _yoffset;
        uint32_t _column_labels_border_x;
        uint32_t _column_labels_height;

        std::list<PortMatrixNode> _mouseover;
        bool _ignore_component_size_changed;

        PBD::ScopedConnectionList _bundle_connections;
};

#endif