korganizer

datechecker.cpp

00001 /*
00002   This file is part of KOrganizer.
00003 
00004   Copyright (c) 2002 Adriaan de Groot <groot@kde.org>
00005   Copyright (c) 2004 Cornelius Schumacher <schumacher@kde.org>
00006 
00007   This program is free software; you can redistribute it and/or modify
00008   it under the terms of the GNU General Public License as published by
00009   the Free Software Foundation; either version 2 of the License, or
00010   (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 along
00018   with this program; if not, write to the Free Software Foundation, Inc.,
00019   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020 
00021   As a special exception, permission is given to link this program
00022   with any edition of Qt, and distribute the resulting executable,
00023   without including the source code for Qt in the source distribution.
00024 */
00025 
00026 #include "datechecker.h"
00027 
00028 #include <kdebug.h>
00029 #include <klocale.h>
00030 #include <kglobal.h>
00031 
00032 #include <QTimer>
00033 
00034 DateChecker::DateChecker( QObject *parent ) : QObject( parent ), mUpdateTimer( 0 )
00035 {
00036   enableRollover( FollowMonth );
00037 }
00038 
00039 DateChecker::~DateChecker()
00040 {
00041 }
00042 
00043 void DateChecker::enableRollover( RolloverType r )
00044 {
00045   switch( r ) {
00046     case None:
00047       if ( mUpdateTimer ) {
00048         mUpdateTimer->stop();
00049         delete mUpdateTimer;
00050         mUpdateTimer = 0;
00051       }
00052       break;
00053     case FollowDay:
00054     case FollowMonth:
00055       if ( !mUpdateTimer ) {
00056         mUpdateTimer = new QTimer( this );
00057         connect( mUpdateTimer, SIGNAL( timeout() ),
00058                  SLOT( possiblyPastMidnight() ) );
00059       }
00060       mUpdateTimer->setSingleShot( true );
00061       mUpdateTimer->start( 0 );
00062       mLastDayChecked = QDate::currentDate();
00063   }
00064   mUpdateRollover = r;
00065 }
00066 
00067 void DateChecker::passedMidnight()
00068 {
00069   QDate today = QDate::currentDate();
00070 
00071   if ( today.month() != mLastDayChecked.month() ) {
00072      if ( mUpdateRollover == FollowMonth ) {
00073        emit monthPassed( today );
00074      }
00075   }
00076   emit dayPassed( today );
00077 }
00078 
00079 void DateChecker::possiblyPastMidnight()
00080 {
00081   if ( mLastDayChecked != QDate::currentDate() ) {
00082     passedMidnight();
00083     mLastDayChecked = QDate::currentDate();
00084   }
00085   // Set the timer to go off 1 second after midnight
00086   // or after 8 minutes, whichever comes first.
00087   if ( mUpdateTimer ) {
00088     QTime now = QTime::currentTime();
00089     QTime midnight = QTime( 23, 59, 59 );
00090     int msecsWait = qMin( 480000, now.msecsTo( midnight ) + 2000 );
00091 
00092     mUpdateTimer->stop();
00093     mUpdateTimer->start( msecsWait );
00094   }
00095 }
00096 
00097 #include "datechecker.moc"
korganizer

datechecker.cpp

korganizer

kdepim
