Menge
Modular Pedestrian Simulation Framework for Research and Development
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
ContextSwitcher.h
Go to the documentation of this file.
1 /*
2 
3 License
4 
5 Menge
6 Copyright and trademark 2012-14 University of North Carolina at Chapel Hill.
7 All rights reserved.
8 
9 Permission to use, copy, modify, and distribute this software and its documentation
10 for educational, research, and non-profit purposes, without fee, and without a
11 written agreement is hereby granted, provided that the above copyright notice,
12 this paragraph, and the following four paragraphs appear in all copies.
13 
14 This software program and documentation are copyrighted by the University of North
15 Carolina at Chapel Hill. The software program and documentation are supplied "as is,"
16 without any accompanying services from the University of North Carolina at Chapel
17 Hill or the authors. The University of North Carolina at Chapel Hill and the
18 authors do not warrant that the operation of the program will be uninterrupted
19 or error-free. The end-user understands that the program was developed for research
20 purposes and is advised not to rely exclusively on the program for any reason.
21 
22 IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE AUTHORS
23 BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
24 DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
25 DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
26 AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
28 THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
29 DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
30 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY STATUTORY WARRANTY
31 OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND
32 THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS HAVE NO OBLIGATIONS
33 TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
34 
35 Any questions or comments should be sent to the authors {menge,geom}@cs.unc.edu
36 
37 */
38 
45 #ifndef __CONTEXT_SWITCHER_H__
46 #define __CONTEXT_SWITCHER_H__
47 
48 #include "Context.h"
49 #include <map>
50 
51 namespace Menge {
52  namespace SceneGraph {
56  typedef std::map< SDLKey, Context * > KeyContextMap;
57 
62  class MENGE_API ContextSwitcher : public Context {
63  public:
68 
72  virtual ~ContextSwitcher();
73 
80  void addContext( Context * context, SDLKey key );
81 
89  bool switchContexts( Context * context );
90 
95  virtual void update();
96 
103  virtual void drawGL( int vWidth, int vHeight );
104 
117  virtual bool selectGL( const GLScene * scene, const GLCamera & camera, int vWidth, int vHeight, int * selectPoint );
118 
122  virtual void newGLContext();
123 
132  virtual ContextResult handleMouse( SDL_Event & e );
133 
142  virtual ContextResult handleKeyboard( SDL_Event & e );
143 
144  protected:
145 
150 
154  KeyContextMap _contexts;
155  };
156  } // namespace SceneGraph
157 } // namespace Menge
158 
159 #endif // __CONTEXT_SWITCHER_H__
SDL_Event SDL_Event
Forward declaration of the SDL event type.
Definition: Context.h:53
The core namespace. All elements of Menge are contained in this namespace.
Definition: AgentGenerator.cpp:43
Special context for switching between multiple contexts. Each context tied to a keyboard shortcut...
Definition: ContextSwitcher.h:62
The base context class for defining a how events are handled. It also is responsible drawing UI eleme...
Definition: Context.h:156
The SceneGraph (SceneGraph) name space, containing all elements to use in a SceneGraph.
The class which contains the entire drawable scene.
Definition: GLScene.h:72
Defines the result of the context's consideration of user input.
Definition: Context.h:74
The class for controlling the view camera: it's position, orientation field of view, projection matrix, etc.
Definition: GLCamera.h:57
KeyContextMap _contexts
A mapping for key to context.
Definition: ContextSwitcher.h:154
Context * _activeContext
The currently active context.
Definition: ContextSwitcher.h:149
Defines a context for handling user interaction (mouse and keyboard input).