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osd_message_queue.h

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00001 /* ScummVM - Graphic Adventure Engine
00002  *
00003  * ScummVM is the legal property of its developers, whose names
00004  * are too numerous to list here. Please refer to the COPYRIGHT
00005  * file distributed with this source distribution.
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License
00009  * as published by the Free Software Foundation; either version 2
00010  * of the License, or (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020  *
00021  */
00022 
00023 #ifndef COMMON_OSD_MESSAGE_QUEUE_H
00024 #define COMMON_OSD_MESSAGE_QUEUE_H
00025 
00026 #include "common/events.h"
00027 #include "common/singleton.h"
00028 #include "common/str.h"
00029 #include "common/queue.h"
00030 #include "common/mutex.h"
00031 
00032 namespace Common {
00033 
00037 class OSDMessageQueue : public Singleton<OSDMessageQueue>, public EventSource {
00038 public:
00039     OSDMessageQueue();
00040     ~OSDMessageQueue();
00041 
00042     void registerEventSource();
00043 
00044     enum {
00045         kMinimumDelay = 1000 
00046     };
00047 
00051     void addMessage(const char *msg);
00052 
00062     virtual bool pollEvent(Common::Event &event) override;
00063 
00064 private:
00065     Mutex _mutex;
00066     Queue<String> _messages;
00067     uint32 _lastUpdate;
00068 };
00069 
00070 } // End of namespace Common
00071 
00072 #endif


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