QItemDelegate and QStyle::State_Selected

[cydside]

Hi to all,
I'm looking for a solution to my QItemDelegate applied to a QTreeView:

ColumnIconDelegate.h

#ifndef COLUMNICONDELEGATE_H
#define COLUMNICONDELEGATE_H
 
#include <QtGui>
 
class ColumnIconDelegate: public QItemDelegate
{
public:
   ColumnIconDelegate(QObject *parent = 0);
 
   void paint(QPainter *painter, const QStyleOptionViewItem &option,
      const QModelIndex &index) const;
};
 
#endif // COLUMNICONDELEGATE_H

#ifndef COLUMNICONDELEGATE_H
#define COLUMNICONDELEGATE_H

#include <QtGui>

class ColumnIconDelegate: public QItemDelegate
{
public:
   ColumnIconDelegate(QObject *parent = 0);

   void paint(QPainter *painter, const QStyleOptionViewItem &option,
      const QModelIndex &index) const;
};

#endif // COLUMNICONDELEGATE_H

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ColumnIconDelegate.cpp

#include "ColumnIconDelegate.h"
 
/*----------------------------------------------------------------------------*/
 
ColumnIconDelegate::ColumnIconDelegate(QObject *parent)
   : QItemDelegate(parent)
{
      //qDebug()() << "ColumnDateDelegate Costruttore";
}
 
/*----------------------------------------------------------------------------*/
 
void ColumnIconDelegate::paint(QPainter *painter,
   const QStyleOptionViewItem &option, const QModelIndex &index) const
{
   QPixmap IconCalendar(48, 48);
   IconCalendar.load(":sottomenu/images/calendar-empty.png", "PNG", Qt::AutoColor);
 
   QStyleOptionViewItem myOption = option;
   myOption.displayAlignment = Qt::AlignRight | Qt::AlignVCenter;
 
   int pixIcona;
 
   if (myOption.rect.height() > 48) pixIcona = 48;
   else pixIcona = (myOption.rect.height());
 
   painter->drawPixmap(myOption.rect.x(),myOption.rect.y(),pixIcona,pixIcona,IconCalendar);
 
   drawDisplay(painter, myOption, myOption.rect, "");
   drawFocus(painter, myOption, myOption.rect);
}

#include "ColumnIconDelegate.h"

/*----------------------------------------------------------------------------*/

ColumnIconDelegate::ColumnIconDelegate(QObject *parent)
   : QItemDelegate(parent)
{
      //qDebug()() << "ColumnDateDelegate Costruttore";
}

/*----------------------------------------------------------------------------*/

void ColumnIconDelegate::paint(QPainter *painter,
   const QStyleOptionViewItem &option, const QModelIndex &index) const
{
   QPixmap IconCalendar(48, 48);
   IconCalendar.load(":sottomenu/images/calendar-empty.png", "PNG", Qt::AutoColor);

   QStyleOptionViewItem myOption = option;
   myOption.displayAlignment = Qt::AlignRight | Qt::AlignVCenter;

   int pixIcona;

   if (myOption.rect.height() > 48) pixIcona = 48;
   else pixIcona = (myOption.rect.height());

   painter->drawPixmap(myOption.rect.x(),myOption.rect.y(),pixIcona,pixIcona,IconCalendar);

   drawDisplay(painter, myOption, myOption.rect, "");
   drawFocus(painter, myOption, myOption.rect);
}

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it shows the icon when the item is NOT selected (see picture Before_Click.png) but it disappears after the click (see picture After_Click.png),so what are I missing?
thanks

[Lykurg]

You have to call drawDisplay and drawFocus fist, then paint your icon. Right now you icon is covered by the later drawn blue background!

[cydside]

You have to call drawDisplay and drawFocus fist, then paint your icon. Right now you icon is covered by the later drawn blue background!

Ops, thanks!

[aamer4yu]

You can also simply override QItemDelegate::drawDecoration if you want to change only the icon.