CODEWITHSUNDEEP
qtstylesheetselecteditemqtreewidget
laurapons
laurapons

Reputation: 1103

Change text color of a specific column for QTreeView

I have widget that inherits from QTreeView, and I want to change the text color, but only for a specific column. Currently I set the stylesheet, so the entire row changes the text color to red when the item is selected. 

QTreeView::item:selected {color: red}

I want to change only the color of the first column when the item is selected. I know how to change the colour for specific columns (using ForegroundRole on the model and checking the index column), but I don't know how to do check if the index is selected in the model.

Upvotes: 2

Views: 2618

Answers (2)

laurapons
laurapons

Reputation: 1103

So this is how I solved it. 

class MyDelegate : public QStyledItemDelegate {
public:
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const { 
        QString text_highlight;
        if (index.column() == 0)){
            text_highlight = BLUE;
        } else{
            text_highlight = RED;
        }
        QStyleOptionViewItem s = *qstyleoption_cast<const QStyleOptionViewItem*>(&option);
        s.palette.setColor(QPalette::HighlightedText, QColor(text_highlight));
        QStyledItemDelegate::paint(painter, s, index);
    }
}

Upvotes: 1

king_nak
king_nak

Reputation: 11513

You can use a delegate for that:

class MyDelegate : public QStyledItemDelegate {
public:
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const {
        if (option.state & QStyle::State_Selected) {
            QStyleOptionViewItem optCopy = option;
            optCopy.palette.setColor(QPalette::Foreground, Qt::red);
        }
        QStyledItemDelegate::paint(painter, optCopy, index);
    }
}

myTreeWidget->setItemDelegateForColumn(0, new MyDelegate);

Upvotes: 4

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