Show HTML content in QTableView column while keeping BackgroundColorRole works

alizadeh91

I've created a QStyledItemDelegate subclass in order to show HTML content in a column of QTableView. I had also set backgroundColors of QTableView' rows dynamically by setting data of the model this way:

_model->setData(index, color, Qt::BackgroundColorRole);

If I set delegate for the column, then, It will lost backgroundColor since it will be ignored by the delegate paint() method. So, How can I modify or implement the paint() method of the delegate class in order to keep both html content enabled and keep backGroundColorRole data?

Here is my paint() method of the delegate:

void THTMLDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
                      const QModelIndex &index) const
{
 QStyleOptionViewItem optionV4 = option;
 initStyleOption(&optionV4, index);

 QStyle *style = optionV4.widget? optionV4.widget->style() : QApplication::style();

 QTextDocument doc;
 doc.setHtml(optionV4.text);

 QAbstractTextDocumentLayout::PaintContext ctx;

 QRect textRect = style->subElementRect(QStyle::SE_ItemViewItemText, &optionV4);
 painter->save();
 painter->translate(textRect.topLeft());
 painter->setClipRect(textRect.translated(-textRect.topLeft()));

 doc.documentLayout()->draw(painter, ctx);
 painter->restore();
 }

raven-worx

@alizadeh91
Either you paint it yourself since you already have the QModelIndex at hand:

QColor color = index.data( Qt::BackgroundColorRole ).toColor();

or by letting the style paint the stuff. Note that this also paints the selected background.

style->drawPrimitive( QStyle::PE_PanelItemViewItem, &option, painter, widget );