certmanager/lib

progressbar.cpp

00001 /*
00002     progressbar.cpp
00003 
00004     This file is part of libkleopatra, the KDE keymanagement library
00005     Copyright (c) 2004 Klarälvdalens Datakonsult AB
00006 
00007     Libkleopatra is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU General Public License as
00009     published by the Free Software Foundation; either version 2 of the
00010     License, or (at your option) any later version.
00011 
00012     Libkleopatra 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 GNU
00015     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     In addition, as a special exception, the copyright holders give
00022     permission to link the code of this program with any edition of
00023     the Qt library by Trolltech AS, Norway (or with modified versions
00024     of Qt that use the same license as Qt), and distribute linked
00025     combinations including the two.  You must obey the GNU General
00026     Public License in all respects for all of the code used other than
00027     Qt.  If you modify this file, you may extend this exception to
00028     your version of the file, but you are not obligated to do so.  If
00029     you do not wish to do so, delete this exception statement from
00030     your version.
00031 */
00032 
00033 #include "config.h"
00034 #include "progressbar.h"
00035 
00036 #include <qtimer.h>
00037 #include <kdebug.h>
00038 
00039 static const int busyTimerTickInterval = 100;
00040 static const int busyTimerTickIncrement = 5;
00041 
00042 Kleo::ProgressBar::ProgressBar( QWidget * parent, const char * name, WFlags f )
00043   : QProgressBar( 0, parent, name, f ),
00044     mRealProgress( -1 )
00045 {
00046   mBusyTimer = new QTimer( this );
00047   connect( mBusyTimer, SIGNAL(timeout()), SLOT(slotBusyTimerTick()) );
00048   fixup( true );
00049 }
00050 
00051 void Kleo::ProgressBar::slotProgress( const QString &, int cur, int tot ) {
00052   setProgress( cur, tot );
00053 }
00054 
00055 void Kleo::ProgressBar::slotProgress( const QString &, int, int cur, int tot ) {
00056   setProgress( cur, tot );
00057 }
00058 
00059 void Kleo::ProgressBar::setTotalSteps( int total ) {
00060   kdDebug() << "Kleo::ProgressBar::setTotalSteps( " << total << " )" << endl;
00061   if ( total == totalSteps() )
00062     return;
00063   QProgressBar::setTotalSteps( 0 );
00064   fixup( false );
00065 }
00066 
00067 void Kleo::ProgressBar::setProgress( int p ) {
00068   kdDebug() << "Kleo::ProgressBar::setProgress( " << p << " )" << endl;
00069   mRealProgress = p;
00070   fixup( true );
00071 }
00072 
00073 void Kleo::ProgressBar::reset() {
00074   mRealProgress = -1;
00075   fixup( true );
00076 }
00077 
00078 void Kleo::ProgressBar::slotBusyTimerTick() {
00079   fixup( false );
00080   if ( mBusyTimer->isActive() )
00081     QProgressBar::setProgress( QProgressBar::progress() + busyTimerTickIncrement );
00082 }
00083 
00084 void Kleo::ProgressBar::fixup( bool newValue ) {
00085   const int cur = QProgressBar::progress();
00086   const int tot = QProgressBar::totalSteps();
00087 
00088   kdDebug() << "Kleo::ProgressBar::startStopBusyTimer() cur = " << cur << "; tot = " << tot << "; real = " << mRealProgress << endl;
00089 
00090   if ( ( newValue && mRealProgress < 0 ) || ( !newValue && cur < 0 ) ) {
00091     kdDebug() << "(new value) switch to reset" << endl;
00092     mBusyTimer->stop();
00093     if ( newValue )
00094       QProgressBar::reset();
00095     mRealProgress = -1;
00096   } else if ( tot == 0 ) {
00097     kdDebug() << "(new value) switch or stay in busy" << endl;
00098     if ( !mBusyTimer->isActive() ) {
00099       mBusyTimer->start( busyTimerTickInterval );
00100       if ( newValue )
00101     QProgressBar::setProgress( mRealProgress );
00102     }
00103   } else {
00104     kdDebug() << "(new value) normal progress" << endl;
00105     mBusyTimer->stop();
00106     if ( QProgressBar::progress() != mRealProgress )
00107       QProgressBar::setProgress( mRealProgress );
00108   }
00109 }
00110 
00111 #include "progressbar.moc"
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