koa item resize crash fix

1 files changed, 21 insertions, 1 deletions

diff --git a/korganizer/koagendaitem.cpp b/korganizer/koagendaitem.cpp
index 5ee433a..7e6fa48 100644
--- a/korganizer/koagendaitem.cpp
+++ b/korganizer/koagendaitem.cpp
@@ -281,412 +281,432 @@ void KOAgendaItem::select(bool selected)
     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( paintPixSel() );
     } 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() );
     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->type() == "Todo" ) {
         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);
     //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 = ( AlignLeft|WordBreak|AlignTop);
 #else
     align = ( AlignLeft|BreakAnywhere|WordBreak|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);
         }
     } 
     int colsum = mBackgroundColor.red() + mBackgroundColor.green() + mBackgroundColor.blue();
     if ( colsum < 250 )
         paint->setPen ( white); 
     if ( x < 0 ) {
         w = w+x-3;
         x = 3;
         if ( w > parentWidget()->width() ){
             w = parentWidget()->width() - 6;
 #ifndef DESKTOP_VERSION
     align = ( AlignHCenter|WordBreak|AlignTop);
 #else
     align = ( AlignHCenter|BreakAnywhere|WordBreak|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() ){
          if ( ! small ) {
              QFontMetrics fm ( paint->font() );
              paint->drawLine(dr.left(), yy+fm.height()/2, dr.right()-2, yy+fm.height()/2);
          }
 
      }
     pa.end();
  
 }
 void KOAgendaItem::resizePixmap( int w , int h )
 {
     paintPix()->resize( w, h ); 
     paintPixSel()->resize( w, h ); 
 
 }
 QPixmap * KOAgendaItem::paintPix()
 {
     static QPixmap* mPaintPix = 0;
     if ( ! mPaintPix )
         mPaintPix = new QPixmap(1,1);
     return mPaintPix ; 
 }
 QPixmap * KOAgendaItem::paintPixAllday()
 {
     static QPixmap* mPaintPixA = 0;
     if ( ! mPaintPixA ) 
         mPaintPixA = new QPixmap(1,1);
     return mPaintPixA ; 
 }
 QPixmap * KOAgendaItem::paintPixSel()
 {
     static QPixmap* mPaintPixSel = 0;
     if ( ! mPaintPixSel )
         mPaintPixSel = new QPixmap(1,1);
     return mPaintPixSel ; 
 }
 void KOAgendaItem::paintEvent ( QPaintEvent *e )
 {  
 
     if ( globalFlagBlockAgendaItemPaint )
         return; 
     if ( globalFlagBlockAgenda > 0 &&  globalFlagBlockAgenda < 5 )
       return;
     int yy;
     if ( mAllDay )
         yy = y();
     else
         yy = mCellYTop * ( height() / cellHeight() );
     int xx = x();
+  
     if ( xPaintCoord != xx || yPaintCoord != yy || 
          wPaintCoord != width() ||  hPaintCoord != height()) {
         xPaintCoord= xx;
         yPaintCoord = yy;
         wPaintCoord = width();
         hPaintCoord = height();
         globalFlagBlockAgendaItemUpdate = 0;
         paintMe( mSelected );
         //qDebug("calling paintMe ");
         globalFlagBlockAgendaItemUpdate = 1;
     }
     int rx, ry, rw, rh;
     rx =  e->rect().x();
     ry =  e->rect().y();
     rw =  e->rect().width();
     rh =  e->rect().height();
     //qDebug("   paintevent %s %d %d    %d  %d", mIncidence->summary().latin1(), x(), yy, width(), height()); 
 
     QPixmap* paintFrom ;
     if ( mSelected ) {
         paintFrom =  paintPixSel();
     } else {
         if ( mAllDay )
             paintFrom =  paintPixAllday();
         else
             paintFrom =  paintPix();
     }
-    bitBlt (this, rx, ry, paintFrom, x()+rx ,yPaintCoord+ry, rw, rh ,CopyROP); 
+    xx += rx;
+
+    if ( xx < 0 ) {
+        rw = rw + xx;
+        rx -= xx;
+        xx = 0;
+        if ( rw < 0 ) {
+            qDebug("KOAgendaItem::Width1 < 0. Returning ");
+            return;
+        }
+    }
+    if ( paintFrom->width() <   xx+rw ) {
+        rw =  paintFrom->width() - xx;
+        if ( rw < 0 ) {
+            qDebug("KOAgendaItem::Width2 < 0. Returning ");
+            return;
+        }
+    }
+    //qDebug("%d %d %d %d %d  %d %d",rx, ry, paintFrom, xx ,yPaintCoord+ry, rw, rh);
+    bitBlt (this, rx, ry, paintFrom, xx ,yPaintCoord+ry, rw, rh ,CopyROP); 
 }
 void KOAgendaItem::computeText()
 {
  
     mDisplayedText =  mIncidence->summary();
     if ( (mIncidence->type() == "Todo") ) {
         if ( static_cast<Todo*>(mIncidence)->hasDueDate() ) {
             if ( static_cast<Todo*>(mIncidence)->dtDue().date() < QDate::currentDate() )
                 mDisplayedText += i18n(" (") +KGlobal::locale()->formatDate((static_cast<Todo*>(mIncidence))->dtDue().date(), true)+")";
             else if ( !(mIncidence->doesFloat()))
                 mDisplayedText += i18n(" (") +KGlobal::locale()->formatTime((static_cast<Todo*>(mIncidence))->dtDue().time())+")";
         } 
     } else {
         if ( !(mIncidence->doesFloat()) &&  KOPrefs::instance()->mShowTimeInAgenda)
             mDisplayedText += ": " +KGlobal::locale()->formatTime((static_cast<Event*>(mIncidence))->dtStart().time()) + "-" + KGlobal::locale()->formatTime((static_cast<Event*>(mIncidence))->dtEnd().time()) ;
 
         if (  mAllDay ) {
             if ( mIncidence->dtStart().date().addDays(3) < mIncidence->dtEnd().date() ) {
                 mDisplayedText += ": " +KGlobal::locale()->formatDate((static_cast<Event*>(mIncidence))->dtStart().date(), true) + " - " + KGlobal::locale()->formatDate((static_cast<Event*>(mIncidence))->dtEnd().date(), true) ;
             }
         }
 
     }
     
     if ( !mIncidence->location().isEmpty() ) {
         if ( mAllDay )
             mDisplayedText += " (";
         else
             mDisplayedText += "\n(";
         mDisplayedText += mIncidence->location() +")";
     }
 
     QString tipText = mIncidence->summary();
     if ( !mIncidence->doesFloat() ) {
         if ( mIncidence->type() == "Event" ) {
             if ( (static_cast<Event*>(mIncidence))->isMultiDay() ) {
                 tipText += "\n"+i18n("From: ")+mIncidence->dtStartStr();
                 tipText += "\n"+i18n("To: ")+(static_cast<Event*>(mIncidence))->dtEndStr();
             }
             else {
                 tipText += "\n"+i18n("Time: ")+mIncidence->dtStartTimeStr();
                 tipText += " - "+(static_cast<Event*>(mIncidence))->dtEndTimeStr();
             }
         }
         else if ( mIncidence->type() == "Todo" ) {
             if (mIncidence->hasStartDate())
                 tipText += "\n"+i18n("Start: ")+ (static_cast<Todo*>(mIncidence))->dtStartStr();
             if (((Todo*)mIncidence)->hasDueDate())
                 tipText += "\n"+i18n("Due: ")+ (static_cast<Todo*>(mIncidence))->dtDueStr();
         }
     } else if ( mIncidence->type() == "Todo" ) {
             if (mIncidence->hasStartDate())
                 tipText += "\n"+i18n("Start: ")+ (static_cast<Todo*>(mIncidence))->dtStartDateStr();
             if (((Todo*)mIncidence)->hasDueDate())
                 tipText += "\n"+i18n("Due: ")+ (static_cast<Todo*>(mIncidence))->dtDueDateStr();
         }
 
     if (!mIncidence->location().isEmpty()) {
         tipText += "\n"+i18n("Location: ")+mIncidence->location();
     }
     QToolTip::add(this,tipText,toolTipGroup(),""); 
 
 }
 void KOAgendaItem::updateItem()
 {  
     computeText();
      
     //qDebug("KOAgendaItem:: updateItem() %s %d %d ",incidence()->summary().latin1(), x(), y());
     paintMe( mSelected );
     repaint( false);
 }
   
 void KOAgendaItem::resizeEvent ( QResizeEvent *ev )
 {
     //qDebug("KOAgendaItem::resizeEvent %s ",  mIncidence->summary().latin1());
     paintMe( mSelected );
     repaint( false );
 } 
 
 /*
   Return height of item in units of agenda cells
 */
 int KOAgendaItem::cellHeight()
 {
     int ret = mCellYBottom - mCellYTop + 1;
     if ( ret <= 0 ) {
         ret = 1;
         mCellYBottom = 0;
         mCellYTop = 0;
     }
     return ret;
 }
 
 /*
   Return height of item in units of agenda cells
 */
 int KOAgendaItem::cellWidth()
 {
     return mCellXWidth - mCellX + 1;
 }
 
 void KOAgendaItem::setItemDate(QDate qd)
 {
   mDate = qd;
 }
 
 void KOAgendaItem::setCellXY(int X, int YTop, int YBottom)
 {
   mCellX = X;
   mCellYTop = YTop;
   mCellYBottom = YBottom;
 }
 
 void KOAgendaItem::setCellXWidth(int xwidth)
 {
   mCellXWidth = xwidth;
 }
 
 void KOAgendaItem::setCellX(int XLeft, int XRight)
 {
   mCellX = XLeft;
   mCellXWidth = XRight;
 }
 
 void KOAgendaItem::setCellY(int YTop, int YBottom)
 {
   mCellYTop = YTop;
   mCellYBottom = YBottom;
 }
 
 void KOAgendaItem::setSubCell(int subCell)
 {
   mSubCell = subCell;
 }
 
 void KOAgendaItem::setSubCells(int subCells)
 {
   mSubCells = subCells;
 }
 
 void KOAgendaItem::setMultiItem(KOAgendaItem *first,KOAgendaItem *next,
                                 KOAgendaItem *last)
 {
   mFirstMultiItem = first;
   mNextMultiItem = next;
   mLastMultiItem = last;
 }
 
 void KOAgendaItem::startMove()
 {
   mStartCellX = mCellX;
   mStartCellXWidth = mCellXWidth;
   mStartCellYTop = mCellYTop;
   mStartCellYBottom = mCellYBottom;
 }
 
 void KOAgendaItem::resetMove()
 {
   mCellX = mStartCellX;
   mCellXWidth = mStartCellXWidth;
   mCellYTop = mStartCellYTop;
   mCellYBottom = mStartCellYBottom;
 }
 
 void KOAgendaItem::moveRelative(int dx, int dy)
 {
   int newX = cellX() + dx;
   int newXWidth = cellXWidth() + dx;
   int newYTop = cellYTop() + dy;
   int newYBottom = cellYBottom() + dy;
   setCellXY(newX,newYTop,newYBottom);
   setCellXWidth(newXWidth);
 }
 
 void KOAgendaItem::expandTop(int dy)
 {
   int newYTop = cellYTop() + dy;
   int newYBottom = cellYBottom();
   if (newYTop > newYBottom) newYTop = newYBottom;
   setCellY(newYTop, newYBottom);
 }
 
 void KOAgendaItem::expandBottom(int dy)
 {
   int newYTop = cellYTop();
   int newYBottom = cellYBottom() + dy;
   if (newYBottom < newYTop) newYBottom = newYTop;
   setCellY(newYTop, newYBottom);
 }
 
 void KOAgendaItem::expandLeft(int dx)
 {