GG: EventPump.h Source File

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EventPump.h
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1 // -*- C++ -*-
2 /* GG is a GUI for SDL and OpenGL.
3 Copyright (C) 2003-2008 T. Zachary Laine
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public License
7 as published by the Free Software Foundation; either version 2.1
8 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA
19
20 If you do not wish to comply with the terms of the LGPL please
21 contact the author as other terms are available for a fee.
22
23 Zach Laine
24 whatwasthataddress@gmail.com */
25
31 #ifndef _GG_EventPump_h_
32 #define _GG_EventPump_h_
33
34 #include <GG/GUI.h>
35
36
37 namespace GG {
38
43 struct GG_API EventPumpState
44 {
45 EventPumpState();
46
47 unsigned int last_FPS_time;
48 unsigned int last_frame_time;
49 unsigned int most_recent_time;
50 std::size_t frames;
51 };
52
58 class GG_API EventPumpBase
59 {
60 protected:
71 void LoopBody(GUI* gui, EventPumpState& state, bool do_non_rendering, bool do_rendering);
72
74 static EventPumpState& State();
75 };
76
120 class GG_API EventPump : public EventPumpBase
121 {
122 public:
123 virtual ~EventPump() {}
124
127 virtual void operator()();
128 };
129
134 class GG_API ModalEventPump : public EventPump
135 {
136 public:
137 ModalEventPump(const bool& done);
138 virtual void operator()();
139
140 protected:
142 bool Done() const;
143
144 private:
145 const bool& m_done;
146 };
147
148 } // namespace GG
149
150 #endif