[Qt-interest] ***SPAM*** Delegate for QPixMap and Background Color

[Ramesh]

Were are these ovveriden functions

QSize sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index)
const;

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

you must get the width of the item from size hint..

paint operation must be done in paint.




-----Original Message-----
From: qt-interest-bounces at trolltech.com
[mailto:qt-interest-bounces at trolltech.com] On Behalf Of peter
Sent: Thursday, April 22, 2010 11:58 AM
To: qt-interest at trolltech.com
Subject: ***SPAM*** [Qt-interest] Delegate for QPixMap and Background Color

Hi,
I have some problems dealing with a delegate for QTableView, that
handles Qt::DecorationRole or Qt::TextColorRole,
I wrote some working delegates for converting some sql table stuff into
international Date, Time output and so on, but I cannot get the above
things to work...

Could anyone help here ?

Here is one of my classes:

Declaration:
class PB_DLLEXPORT PBTextTranslateDelegate : public QStyledItemDelegate
{
     Q_OBJECT
public:
     PBTextTranslateDelegate(QObject *parent, QStringList texte, QString
Fehler = Texte.Datenfehler);
     ~PBTextTranslateDelegate();

     QString displayText ( const QVariant & value, const QLocale &
locale ) const;
private:
     QStringList Text;
     QString Fehler;
};

Implementation:

PBTextTranslateDelegate::PBTextTranslateDelegate(QObject *parent,
QStringList liste, QString _Fehler)
:QStyledItemDelegate(parent)
{
     Text = liste;
     Fehler = _Fehler;
}

PBTextTranslateDelegate::~PBTextTranslateDelegate()
{
}

QString PBTextTranslateDelegate::displayText(const QVariant &value,
const QLocale &locale) const
{
     int offset = value.toInt();
     if ((offset >= 0) && (offset < Text.count()))
         return Text.at(offset);
     return Fehler;
}

Actually I solve this with a overwritten model class from i.e.
QSqlQueryModel or a self written Models for some data structures, but
for the standard case, it is better to use a delegate for a column...

Regards,
Peter
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