fixed segfault when trying to display uncategorized eventHEADmaster

Signed-off-by: Michael Krelin <hacker@klever.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/korganizer/koagendaitem.cpp b/korganizer/koagendaitem.cpp
index 0f9a38f..d38cb00 100644
--- a/korganizer/koagendaitem.cpp
+++ b/korganizer/koagendaitem.cpp
@@ -1,507 +1,508 @@
 /*
     This file is part of KOrganizer.
     Copyright (c) 2000,2001 Cornelius Schumacher <schumacher@kde.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include <qlabel.h>
 #include <qlayout.h>
 #include <q3hbox.h>
 #include <q3vbox.h>
 #include <qtooltip.h>
 #include <q3whatsthis.h>
 #include <q3dragobject.h>
 #include <qdrawutil.h> 
 #include <qpainter.h> 
 #include <QDesktopWidget>
 //Added by qt3to4:
 #include <Q3PtrList>
 #include <QPixmap>
 #include <QDragEnterEvent>
 #include <QDropEvent>
 #include <QResizeEvent>
 #include <QMouseEvent>
 #include <QEvent>
 #include <QPaintEvent>
 
 #include <kiconloader.h>
 #include <kdebug.h>
 #include <kglobal.h>
 #include <klocale.h>
 #ifndef DESKTOP_VERSION
 #include <qpe/qpeapplication.h>
 #define AGENDA_ICON_SIZE 5
 #else
 #include <qapplication.h>
 #define AGENDA_ICON_SIZE 7
 #endif
 #include <libkcal/icaldrag.h>
 #include <libkcal/vcaldrag.h>
 #include <libkcal/kincidenceformatter.h>
 extern int globalFlagBlockAgenda;
 extern int globalFlagBlockAgendaItemPaint;
 extern int globalFlagBlockAgendaItemUpdate;
 
 #include "koprefs.h"
 
 #include "koagendaitem.h"
 //#include "koagendaitem.moc"
 
 
 //--------------------------------------------------------------------------
 
 QToolTipGroup *KOAgendaItem::mToolTipGroup = 0;
 
 //--------------------------------------------------------------------------
 
 class KOAgendaItemWhatsThis :public Q3WhatsThis
 {
 public:
   KOAgendaItemWhatsThis( KOAgendaItem* view ) : Q3WhatsThis( view ),_view (view) { };
 
 protected:
   virtual QString text( const QPoint& )
   {
     return _view->getWhatsThisText() ;
   }
 private:
   KOAgendaItem * _view;
 };
 
 KOAgendaItem::KOAgendaItem(Incidence *incidence, QDate qd, QWidget *parent,bool allday,
                            const char *name,Qt::WFlags) :
     QWidget(parent, name), mIncidence(incidence), mDate(qd)
 {
 #ifndef DESKTOP_VERSION
     //QPEApplication::setStylusOperation( this, QPEApplication::RightOnHold );
 #endif
     mKOAgendaItemWhatsThis =  new KOAgendaItemWhatsThis(this);
     Qt::WindowFlags wflags = windowFlags() |Qt::WRepaintNoErase;// WResizeNoErase
     setWindowFlags ( wflags);
     mAllDay = allday;
     init ( incidence, qd );
     //setMouseTracking(true);
     //setAcceptDrops(true);
     xPaintCoord = -1;
     yPaintCoord = -1;
 }
 QString KOAgendaItem::getWhatsThisText()
 {
     if ( mIncidence )
         return KIncidenceFormatter::instance()->getFormattedText( mIncidence, 
                                                                   KOPrefs::instance()->mWTshowDetails,
                                                                   KOPrefs::instance()->mWTshowCreated,
                                                                   KOPrefs::instance()->mWTshowChanged);
     return "KOAgendaItem::getWhatsThisText()::internal error";
 }
 
 void KOAgendaItem::initColor ()
 {
     if ( (mIncidence->typeID() == todoID ) &&
          ( !((static_cast<Todo*>(mIncidence))->isCompleted()) &&
            ((static_cast<Todo*>(mIncidence))->dtDue().date() <=  QDate::currentDate()) ) ) {
         if (  (static_cast<Todo*>(mIncidence))->dtDue() <  (QDateTime)QDateTime::currentDateTime().date()) 
             mBackgroundColor = KOPrefs::instance()->mTodoOverdueColor ;
         else 
             mBackgroundColor = KOPrefs::instance()->mTodoDueTodayColor;
     }
     else {
         QStringList categories = mIncidence->categories();
-        QString cat = categories.first();
+        QString cat;
+	if(!categories.isEmpty()) cat = categories.first();
         if (cat.isEmpty()) {
             if ( (mIncidence->typeID() == todoID ) &&((static_cast<Todo*>(mIncidence))->isCompleted()) )
                 mBackgroundColor =KOPrefs::instance()->mTodoDoneColor;
             else
                 mBackgroundColor =KOPrefs::instance()->defaultColor( mIncidence->calID() );
         } else {
             mBackgroundColor = *KOPrefs::instance()->categoryColor(cat);
             if ( (mIncidence->typeID() == todoID ) &&((static_cast<Todo*>(mIncidence))->isCompleted()) ) {
                 if ( mBackgroundColor == KOPrefs::instance()->mEventColor )
                     mBackgroundColor = KOPrefs::instance()->mTodoDoneColor;
             }
         }
             
     }
 
     QColor BackgroundColor ( mBackgroundColor );
     if ( mIncidence->calID() > 1 ) {
         //BackgroundColor = KOPrefs::instance()->defaultColor( mIncidence->calID() );
     }
     mColorGroup  = QColorGroup( BackgroundColor.light(), 
                                 BackgroundColor.dark(),BackgroundColor.light(),
                                 BackgroundColor.dark(),BackgroundColor, Qt::black, BackgroundColor) ;
     setBackgroundColor( mBackgroundColor );
     mWhiteText = (mBackgroundColor.red() + mBackgroundColor.green() + mBackgroundColor.blue() < 250);
 }
 void KOAgendaItem::init ( Incidence *incidence, QDate qd )
 {
     mIncidence = incidence;
     mDate = qd;
     mFirstMultiItem = 0;
     mNextMultiItem = 0;
     mLastMultiItem = 0;  
     computeText();
     initColor();
     mConflictItems.clear();
     setCellXY(0,0,1);
     setCellXWidth(0);
     setSubCell(0);
     setSubCells(1);
     setMultiItem(0,0,0);
     startMove();
     mSelected = true;
     select(false);
     QFontMetrics fontinf(KOPrefs::instance()->mAgendaViewFont);
     mFontPixelSize = fontinf.height();;
     hide();
     xPaintCoord = -1;
     yPaintCoord = -1;
 }
 
 
 KOAgendaItem::~KOAgendaItem()
 {
 #if QT_VERSION >= 0x030000
 
 #else
     delete mKOAgendaItemWhatsThis;
 #endif 
   
 }
 
 void KOAgendaItem::recreateIncidence()
 {
 #if 0
     Incidence* newInc = mIncidence->clone();
     newInc->recreate();
     if ( mIncidence->doesRecur() ) {
         mIncidence->addExDate( mDate );
         newInc->recurrence()->unsetRecurs();
         int len = mIncidence->dtStart().secsTo( ((Event*)mIncidence)->dtEnd());
         QTime tim = mIncidence->dtStart().time();
         newInc->setDtStart( QDateTime(mDate, tim) );
         ((Event*)newInc)->setDtEnd( newInc->dtStart().addSecs( len ) );
     }
 #endif
     mIncidence = mIncidence->recreateCloneException( mDate );
 }
 bool KOAgendaItem::updateIcons(QPainter * p, bool horLayout)
 {
     int size = AGENDA_ICON_SIZE;
 
     int yOff = 0;
     int xOff = 0;
     int x = pos().x();
 
     if ( x < 0 ) x = 0;
     x += 3; 
     int y;
     if ( mAllDay )
         y = pos().y()+3;
     else
         y =  mCellYTop * ( height() / cellHeight() ) +3;
 
 
     if ( mIncidence->calID() > 1 ) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, KOPrefs::instance()->defaultColor( mIncidence->calID() ) );
         p->drawRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x-1, yOff*( 1 +AGENDA_ICON_SIZE)+y-1, AGENDA_ICON_SIZE+2, AGENDA_ICON_SIZE+2 );
         if ( horLayout ){
             ++xOff;
             ++x;
         }
         else {
             ++yOff;
             ++y;
         }
     }
     if (mIncidence->cancelled() &&  height() < 20 ) {
         int xpos = xOff*( 1 +AGENDA_ICON_SIZE )+x;
         int ypos = yOff*( 1 +AGENDA_ICON_SIZE)+y;
         p->drawLine( xpos, ypos, xpos+AGENDA_ICON_SIZE-1, ypos+AGENDA_ICON_SIZE-1  );
         p->drawLine( xpos, ypos+AGENDA_ICON_SIZE-1, xpos+AGENDA_ICON_SIZE-1, ypos );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
     if (mIncidence->isAlarmEnabled() && mIncidence->alarmEnabled()) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::red );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
     if (mIncidence->doesRecur()) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::blue );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
     if (mIncidence->description().length() > 0) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::darkGreen );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
    if (mIncidence->isReadOnly()) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::white );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
 
     if (mIncidence->attendeeCount()>0) {
         
         if (mIncidence->organizer() == KOPrefs::instance()->email()) {
             p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::black );
             if ( horLayout )
                 ++xOff;
             else
                 ++yOff;
         } else {
             Attendee *me = mIncidence->attendeeByMails(KOPrefs::instance()->mAdditionalMails,KOPrefs::instance()->email());
             if (me!=0) {
 
 
             } else {
                 p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::yellow  );
                 if ( horLayout )
                     ++xOff;
                 else
                     ++yOff;
 
             }
             p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::darkYellow );
             if ( horLayout )
                 ++xOff;
             else
                 ++yOff;
 
         }
 
     }
   return ( yOff || xOff );
 }
 
 
 void KOAgendaItem::select(bool selected)
 {
     //qDebug("select %d %d",firstMultiItem(), nextMultiItem() );
     if (mSelected == selected) return;
     mSelected = selected;
     if ( ! isVisible() )
         return;
     if ( firstMultiItem() )
         firstMultiItem()->select( selected );
     if ( !firstMultiItem() && nextMultiItem() ) {
         KOAgendaItem *  placeItem = nextMultiItem();
         while ( placeItem ) { 
             placeItem->select( selected );
             placeItem = placeItem->nextMultiItem();
         }  
     }
     globalFlagBlockAgendaItemUpdate = 0;
     paintMe( selected );
     globalFlagBlockAgendaItemUpdate = 1;
     repaint( false );
 }
 
 
 /*
   The eventFilter has to filter the mouse events of the agenda item childs. The
   events are fed into the event handling method of KOAgendaItem. This allows the
   KOAgenda to handle the KOAgendaItems by using an eventFilter.
 */
 bool KOAgendaItem::eventFilter ( QObject *object, QEvent *e )
 {
     if (e->type() == QEvent::MouseButtonPress ||
         e->type() == QEvent::MouseButtonDblClick ||
         e->type() == QEvent::MouseButtonRelease ||
         e->type() == QEvent::MouseMove) {
         QMouseEvent *me = (QMouseEvent *)e;
         QPoint itemPos = this->mapFromGlobal(((QWidget *)object)->
                                              mapToGlobal(me->pos()));
         QMouseEvent returnEvent (e->type(),itemPos,me->button(),me->state());
         return event(&returnEvent);
     } else {
         return false;
     }
 }
 void KOAgendaItem::repaintMe( )
 { 
     paintMe ( mSelected );
 }
 void KOAgendaItem::paintMe( bool selected, QPainter* paint )
 {    
     if ( globalFlagBlockAgendaItemUpdate && ! selected)
       return;
     QPainter pa;
     
     if ( mSelected ) {
         pa.begin( this );
     } else {
         if ( mAllDay )
             pa.begin( paintPixAllday() );
         else
             pa.begin( paintPix() );
     }
     int x, yy, w,  h;
     float nfh = 7.0;
     x = pos().x(); w = width(); h = height ();
     if ( mAllDay )
         yy = y();
     else
         yy = mCellYTop * ( height() / cellHeight() ); 
     if ( mSelected ) {
         pa.translate( -x, -yy );
     } 
     xPaintCoord= x;
     yPaintCoord = yy;
     wPaintCoord = width();
     hPaintCoord = height();
     //qDebug("paintMe %s %d %d %d %d",incidence()->summary().latin1(), x, yy, width(), height());
     if ( paint == 0 )
         paint = &pa;
     bool horLayout = ( w < h );
     int maxhei = mFontPixelSize+4;
     if (  horLayout )
         maxhei +=  AGENDA_ICON_SIZE -4;
     bool small = ( h < maxhei  );
     if ( ! small ) 
         paint->setFont(KOPrefs::instance()->mAgendaViewFont);
     else {
         QFont f =  KOPrefs::instance()->mAgendaViewFont;
         f.setBold( false );
         int fh = f.pointSize();
         nfh = (((float)height())/(float)(mFontPixelSize+4))*fh;
         if ( nfh < 6 )
             nfh = 6;
         f.setPointSize( nfh );
         paint->setFont(f);
     }
     paint->fillRect ( x, yy,  w, h, mBackgroundColor );
     static const  QPixmap completedPxmp = SmallIcon("greenhook16");
     static const QPixmap overduePxmp = SmallIcon("redcross16");
     if ( mIncidence->typeID() == todoID ) {
         Todo* tempTodo = static_cast<Todo*>(mIncidence);
         int xx = pos().x()+(width()-completedPxmp.width()-3 );
         int yyy =  yy+3;
         if ( tempTodo->isCompleted() )
             paint->drawPixmap ( xx, yyy, completedPxmp );
         else {
             paint->drawPixmap ( xx, yyy, overduePxmp );
             
         }
     }
     bool addIcon = false;
     if ( ! small || w > 3 * h || h > 3* w )
        addIcon =  updateIcons(  paint, horLayout );
 
     //qDrawShadePanel (paint, x,  yy,  w,  h, mColorGroup, selected , 2, 0);
     qDrawWinPanel (paint, x,  yy,  w,  h, mColorGroup, selected ,0);
     //qDebug("draw rect %d %d %d %d ",x,  yy,  w,  h );
     if ( ! small ) {
         x += 3; yy += 3;w -= 6;  h-= 5;
     } else {
         x += 2; yy += 1;w -= 4;  h-= 4; 
         if ( nfh < 6.01 ) {
             yy -= 2;
             h += 4;
         }
         else
             if ( nfh < h -2 )
                 ++yy;
     }
     int align;
 #ifndef DESKTOP_VERSION
     align = ( Qt::AlignLeft|Qt::TextWordWrap|Qt::AlignTop);
 #else
     align = ( Qt::AlignLeft|Qt::TextWrapAnywhere|Qt::TextWordWrap|Qt::AlignTop);
 #endif
     if (  addIcon  ) {
         if ( ! horLayout ) {
             x += AGENDA_ICON_SIZE+3;
             w -= (AGENDA_ICON_SIZE+3);
         }
         else {
             yy+= AGENDA_ICON_SIZE+2;
             h -=(AGENDA_ICON_SIZE+3);
         }
     } 
     if ( mWhiteText )
         paint->setPen ( Qt::white); 
     if ( x < 0 ) {
         w = w+x-3;
         x = 3;
         if ( !horLayout && addIcon )
             x += AGENDA_ICON_SIZE+3;
         if ( w > parentWidget()->width() ){
             w = parentWidget()->width() - 6;
 #ifndef DESKTOP_VERSION
     align = ( Qt::AlignHCenter|Qt::TextWordWrap|Qt::AlignTop);
 #else
     align = ( Qt::AlignHCenter|Qt::TextWrapAnywhere|Qt::TextWordWrap|Qt::AlignTop);
 #endif
 
         }
     }
     QRect dr;
     if ( w + x > parentWidget()->width() )
         w = parentWidget()->width()-x;
      paint->drawText ( x, yy, w, h, align, mDisplayedText, -1, &dr );
      //qDebug("%d %d %d %d ",   x, yy, w, h );
      if ( mIncidence->cancelled() ){
 
 
          small = ( height() < 20  );
         
          if ( ! small ) {
              QFontMetrics fm ( paint->font() );
              paint->drawLine(dr.left(), yy+fm.height()/2, dr.right()-2, yy+fm.height()/2);
          }
 
      }
     pa.end();
  
 }
 
 QPixmap * KOAgendaItem::paintPix()
 {
     static QPixmap* mPaintPix = 0;
     if ( ! mPaintPix ) {
         int w = QApplication::desktop()->width();
         int h = QApplication::desktop()->height();
         mPaintPix = new QPixmap(w,h);
     }
     return mPaintPix ; 
 }
 QPixmap * KOAgendaItem::paintPixAllday()
 {
     static QPixmap* mPaintPixA = 0;
     if ( ! mPaintPixA ) {
         int w = QApplication::desktop()->width();
         int h = QApplication::desktop()->height()/5;
         mPaintPixA = new QPixmap(w,h);
     }
     return mPaintPixA ; 
 }
 
 void KOAgendaItem::repaintItem()
 { 
     globalFlagBlockAgendaItemPaint = 0;