port_matrix_body.h

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/*
 * Copyright (C) 2009 Carl Hetherington <carl@carlh.net>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#pragma once
 
#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;
};