00001 /*************************************************************************** 00002 ** 00003 ** This file is part of QGpCoreTools. 00004 ** 00005 ** This library is free software; you can redistribute it and/or 00006 ** modify it under the terms of the GNU Lesser General Public 00007 ** License as published by the Free Software Foundation; either 00008 ** version 2.1 of the License, or (at your option) any later version. 00009 ** 00010 ** This file is distributed in the hope that it will be useful, but WITHOUT 00011 ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 00013 ** License for more details. 00014 ** 00015 ** You should have received a copy of the GNU Lesser General Public 00016 ** License along with this library; if not, write to the Free Software 00017 ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00018 ** 00019 ** See http://www.geopsy.org for more information. 00020 ** 00021 ** Created : 2008-02-20 00022 ** Authors : 00023 ** Marc Wathelet 00024 ** Marc Wathelet (LGIT, Grenoble, France) 00025 ** 00026 ***************************************************************************/ 00027 00028 #ifndef ABSTRACTPROGRESS_H 00029 #define ABSTRACTPROGRESS_H 00030 00031 #include <time.h> 00032 00033 #include "QGpCoreToolsDLLExport.h" 00034 #include "Trace.h" 00035 00036 namespace QGpCoreTools { 00037 00038 class QGPCORETOOLS_EXPORT AbstractProgress 00039 { 00040 public: 00041 AbstractProgress(); 00042 virtual ~AbstractProgress() {} 00043 00044 virtual void setMaximum(int val); 00045 int maximum() const; 00046 00047 virtual void setCaption(QString c); 00048 const QString& caption() const; 00049 00050 inline void setValue(int val); 00051 inline void increaseValue(int val=1); 00052 int value() const {return _value+_deltaValue;} 00053 protected: 00054 virtual void paint(QString caption, int value, int maximum)=0; 00055 QString valueString(int value, int maximum); 00056 00057 mutable QMutex _mutex; 00058 QString _caption; 00059 int _value; 00060 int _maximum; 00061 private: 00062 inline void show(); 00063 void setValueInternal(int val); 00064 void increaseValueInternal(); 00065 00066 QAtomicInt _lastTime; 00067 int _deltaValue; 00068 }; 00069 00070 inline void AbstractProgress::increaseValue(int val) 00071 { 00072 TRACE; 00073 _deltaValue+=val; // Several increments may stack up if they arrive too fast. 00074 int now=time(0); 00075 if(_lastTime.fetchAndStoreOrdered(now)!=now) { 00076 increaseValueInternal(); 00077 _deltaValue=0; 00078 } 00079 } 00080 00081 inline void AbstractProgress::setValue(int val) 00082 { 00083 TRACE; 00084 int now=time(0); 00085 if(_lastTime.fetchAndStoreOrdered(now)!=now || val==_maximum) { 00086 setValueInternal(val); 00087 } 00088 } 00089 00090 } // namespace QGpCoreTools 00091 00092 #endif // ABSTRACTPROGRESS_H
