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salome-gui  6.5.0
SUIT_OverrideCursor.cxx
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00001 // Copyright (C) 2007-2012  CEA/DEN, EDF R&D, OPEN CASCADE
00002 //
00003 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
00004 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
00005 //
00006 // This library is free software; you can redistribute it and/or
00007 // modify it under the terms of the GNU Lesser General Public
00008 // License as published by the Free Software Foundation; either
00009 // version 2.1 of the License.
00010 //
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 // Lesser General Public License for more details.
00015 //
00016 // You should have received a copy of the GNU Lesser General Public
00017 // License along with this library; if not, write to the Free Software
00018 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
00019 //
00020 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
00021 //
00022 
00023 #include "SUIT_OverrideCursor.h"
00024 
00025 #include <QApplication>
00026 
00028 SUIT_OverrideCursor::SUIT_OverrideCursor()
00029 {
00030   QApplication::setOverrideCursor( QCursor( Qt::WaitCursor ) );
00031 }
00032 
00034 SUIT_OverrideCursor::SUIT_OverrideCursor( const QCursor& cursor )
00035 {
00036   QApplication::setOverrideCursor( cursor );
00037 }
00038 
00040 SUIT_OverrideCursor::~SUIT_OverrideCursor()
00041 {
00042   QApplication::restoreOverrideCursor();
00043 }
00044 
00046 bool SUIT_OverrideCursor::isActive() const
00047 {
00048   return myCursors.isEmpty();
00049 }
00050 
00052 void SUIT_OverrideCursor::suspend()
00053 {
00054   if ( !isActive() )
00055     return;
00056 
00057   while ( QApplication::overrideCursor() )
00058   {
00059     myCursors.prepend( *QApplication::overrideCursor() );
00060     QApplication::restoreOverrideCursor();
00061   }
00062 }
00063 
00065 void SUIT_OverrideCursor::resume()
00066 {
00067   if ( isActive() )
00068     return;
00069 
00070   for ( QList<QCursor>::const_iterator it = myCursors.begin(); it != myCursors.end(); ++it )
00071     QApplication::setOverrideCursor( *it );
00072 
00073   myCursors.clear();
00074 }