GeopsyCore/SortKey.h
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00001 /***************************************************************************
00002 **
00003 **  This file is part of GeopsyCore.
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: 2010-07-28
00022 **  Authors:
00023 **    Marc Wathelet (LGIT, Grenoble, France)
00024 **
00025 ***************************************************************************/
00026 
00027 #ifndef SORTKEY_H
00028 #define SORTKEY_H
00029 
00030 #include <QtCore>
00031 
00032 #include "MetaDataIndex.h"
00033 #include "Signal.h"
00034 #include "GeopsyCoreDLLExport.h"
00035 
00036 namespace GeopsyCore {
00037 
00038   class GEOPSYCORE_EXPORT SortKey : public MetaDataIndex
00039   {
00040   public:
00041     SortKey(const MetaDataIndex& d, bool r=false) : MetaDataIndex(d) {_reversed=r;}
00042     SortKey(int id, bool r=false) : MetaDataIndex(id, 0, 0) {_reversed=r;}
00043     SortKey(const SortKey& o) : MetaDataIndex(o) {_reversed=o._reversed;}
00044 
00045     bool reversed() const {return _reversed;}
00046 
00047     static inline bool lessThan(const Signal * sig1, const Signal * sig2);
00048     static void clear() {_keys.clear();}
00049     static void add(const SortKey& k) {_keys.append(k);}
00050     static int count() {return _keys.count();}
00051     static const SortKey& at(int index) {return _keys.at(index);}
00052   private:
00053     bool _reversed;
00054 
00055     static QList<SortKey> _keys;
00056   };
00057 
00058   inline bool SortKey::lessThan(const Signal * sig1, const Signal * sig2)
00059   {
00060     return *sig1 < *sig2;
00061   }
00062 
00063 } // namespace GeopsyCore
00064 
00065 #endif // SORTKEY_H
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