Custom QStyledItemDelegate

I have implemented my own delegate for a qTreeWidget, it works perfectly (for what I am using it for at least the widget contains about 30 items and the template affects only top level items) however I think the solution is a bit ugly and I would appreciate some advice.

The technique I use is to create a template widget (which I have created in the designer), assign the data to it, then render it to a pixmap and paint the pixmap.
The ugly part is how I am setting the style on the template widget, ideally I would simply like to apply the appropriate "QTreeView::item" style from my .qss file but aside from string parsing them out of the .qss file manually I don't know how to do that, and all my attempts to use the qstyleoptionview object failed.

Code:

---

class ItemTemplate: public QWidget
{
public:
	ItemTemplate(QWidget* parent = 0);
	void setDescription(const QString& s);
 
private:
	Ui::ItemTemplateWidget ui;
};

---

Code:

---

class CustomItemDelegate : public QStyledItemDelegate
{
public:
...
	void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
 
 
private:
	ItemTemplate* mTemplateWidget;
};

---

Code:

---

void CustomItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
	QString s = index.data(ROLE_DESCRIPTION).toString();
	if (!s.isEmpty() && !s.isNull()) 
	{
		painter->save();
 
		QStyleOptionViewItemV4 opt = option;
		initStyleOption(&opt, index);
 
		if (option.state & QStyle::State_Enabled)
		{
			mTemplateWidget->setStyleSheet("somecustomstyle");
 
			if (option.state & QStyle::State_Selected)
			{
			mTemplateWidget->setStyleSheet("somecustomstyle");
			}
			else if (option.state & QStyle::State_MouseOver)
			{
				mTemplateWidget->setStyleSheet("somecustomstyle");
			}
		}
		else
		{
			mTemplateWidget->setStyleSheet("somecustomstyle");
		}
 
		mTemplateWidget->setDescription(s);
		mTemplateWidget->setGeometry(0, 0, option.rect.width(), option.rect.height());
 
		QPixmap pix = QPixmap::grabWidget(mTemplateWidget);
		painter->drawPixmap(option.rect, pix);
 
		painter->restore();
	}
	else
	{
		QStyledItemDelegate::paint(painter, option, index);
	}

---

Thanks in advance!