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Canvas: support for custom events and event dispatching.
[simgear.git] / simgear / canvas / canvas_fwd.hxx
1 // Canvas forward declarations
2 //
3 // Copyright (C) 2012  Thomas Geymayer <tomgey@gmail.com>
4 //
5 // This library is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU Library General Public
7 // License as published by the Free Software Foundation; either
8 // version 2 of the License, or (at your option) any later version.
9 //
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 // Library General Public License for more details.
14 //
15 // You should have received a copy of the GNU Library General Public
16 // License along with this library; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
18
19 #ifndef SG_CANVAS_FWD_HXX_
20 #define SG_CANVAS_FWD_HXX_
21
22 #include <simgear/props/propsfwd.hxx>
23 #include <simgear/structure/SGWeakPtr.hxx>
24
25 #include <osg/ref_ptr>
26 #include <osgText/Font>
27
28 #include <boost/function.hpp>
29 #include <boost/shared_ptr.hpp>
30 #include <boost/weak_ptr.hpp>
31
32 #include <map>
33 #include <vector>
34
35 namespace simgear
36 {
37 namespace canvas
38 {
39
40 #define SG_FWD_DECL(name)\
41   class name;\
42   typedef SGSharedPtr<name> name##Ptr;\
43   typedef SGWeakPtr<name> name##WeakPtr;
44
45   SG_FWD_DECL(Canvas)
46   SG_FWD_DECL(Element)
47   SG_FWD_DECL(Group)
48   SG_FWD_DECL(Image)
49   SG_FWD_DECL(Map)
50   SG_FWD_DECL(Path)
51   SG_FWD_DECL(Text)
52   SG_FWD_DECL(Window)
53
54   SG_FWD_DECL(Event)
55   SG_FWD_DECL(CustomEvent)
56   SG_FWD_DECL(MouseEvent)
57
58 #undef SG_FWD_DECL
59
60 #define SG_FWD_DECL(name)\
61   class name;\
62   typedef boost::shared_ptr<name> name##Ptr;\
63   typedef boost::weak_ptr<name> name##WeakPtr;
64
65   SG_FWD_DECL(Placement)
66   SG_FWD_DECL(SystemAdapter)
67
68 #undef SG_FWD_DECL
69
70   class EventManager;
71   class EventVisitor;
72
73   struct EventTarget;
74   typedef std::deque<EventTarget> EventPropagationPath;
75
76   typedef std::map<std::string, const SGPropertyNode*> Style;
77   typedef ElementPtr (*ElementFactory)( const CanvasWeakPtr&,
78                                         const SGPropertyNode_ptr&,
79                                         const Style&,
80                                         Element* );
81
82   typedef osg::ref_ptr<osgText::Font> FontPtr;
83
84   typedef std::vector<PlacementPtr> Placements;
85   typedef boost::function<Placements( SGPropertyNode*,
86                                       CanvasPtr )> PlacementFactory;
87
88   typedef boost::function<void(const EventPtr&)> EventListener;
89
90 } // namespace canvas
91 } // namespace simgear
92
93
94 #endif /* SG_CANVAS_FWD_HXX_ */