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viewport.h

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00001 /***************************************************************************
00002  *   Copyright (C) 2004 by Rick L. Vinyard, Jr.                            *
00003  *   rvinyard@cs.nmsu.edu                                                  *
00004  *                                                                         *
00005  *   This file is part of the papyrus library.                             *
00006  *                                                                         *
00007  *   papyrus is free software; you can redistribute it and/or modify       *
00008  *   it under the terms of the GNU Lesser General Public License           *
00009  *   version 3.0 as published by the Free Software Foundation.             *
00010  *                                                                         *
00011  *   papyrus is distributed in the hope that it will be useful,            *
00012  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00014  *   GNU Lesser General Public License version 3.0 for more details.       *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Lesser General Public      *
00017  *   License along with the papyrus library. If not, see                   *
00018  *   <http://www.gnu.org/licenses/>.                                       *
00019  ***************************************************************************/
00020 #ifndef PAPYRUSGTKVIEWPORT_H
00021 #define PAPYRUSGTKVIEWPORT_H
00022 
00023 #include <set>
00024 
00025 #include <gtkmm.h>
00026 
00027 #include <papyrus/canvas.h>
00028 #include <papyrus/controller.h>
00029 #include <papyrus-gtkmm/enums.h>
00030 
00031 namespace Papyrus
00032 {
00033   namespace Gtk
00034   {
00035 
00039     class Viewport: public ::Gtk::EventBox
00040     {
00041 
00042       public:
00043 
00044         Viewport();
00045         
00046         virtual ~Viewport();
00047 
00048         typedef std::set<Papyrus::Controller::pointer> Controllers;
00049 
00050         // Drawing Operations
00051         virtual void clear();
00052 
00054         Papyrus::Canvas::pointer canvas();
00055 
00057         void set_canvas ( Papyrus::Canvas::pointer  canvas );
00058 
00059         const Controllers& controllers();
00060 
00061         void add_controller ( Papyrus::Controller::pointer controller );
00062 
00063         void remove_controller ( Papyrus::Controller::pointer controller );
00064 
00065         bool canvas_size_tied_to_viewport();
00066 
00067         void tie_canvas_size_to_viewport ( bool tie=true );
00068 
00069         bool viewport_size_tied_to_canvas();
00070 
00071         void tie_viewport_size_to_canvas ( bool tie=true );
00072 
00073         Papyrus::Event::signal& signal_papyrus_event();
00074 
00075       protected:
00076         Papyrus::Canvas::pointer m_canvas;
00077         int m_width, m_height;
00078         bool m_tie_canvas_size_to_viewport, m_tie_viewport_size_to_canvas;
00079         
00080         Controllers m_controllers;
00081         
00082         typedef std::map<Papyrus::Controller::pointer,sigc::connection> ControllerConnections;
00083 
00084         ControllerConnections m_controller_connections;
00085 
00086         Papyrus::Event::signal m_signal_papyrus_event;
00087         
00088         sigc::connection m_canvas_redraw_connection;
00089         sigc::connection m_canvas_size_connection;
00090         Cairo::RefPtr<Cairo::Context> m_context;
00091 
00092         void on_canvas_size_changed();
00093 
00094         void on_redraw ( double x, double y, double w, double h );
00095 
00096         bool expose_event_callback ( GdkEventExpose* e );
00097 
00098         void size_allocate_callback ( ::Gtk::Allocation& allocation );
00099 
00100         bool button_press_event_callback ( GdkEventButton* event );
00101 
00102         bool button_release_event_callback ( GdkEventButton* event );
00103 
00104         bool key_press_event_callback ( GdkEventKey* event );
00105 
00106         bool key_release_event_callback ( GdkEventKey* event );
00107 
00108         bool motion_notify_event_callback ( GdkEventMotion* event );
00109 
00110         bool scroll_event_callback ( GdkEventScroll* event );
00111 
00112     };
00113 
00114   }
00115 
00116 }
00117 
00118 #endif

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