Dynamic color for a selected QTreeViewItem?

mbruel

Hi,
I'm struggling to keep the color of the items of my Treeview when they are getting selected.
I've set a color with the data role Qt::ForegroundRole.
The color is displayed right. it is staying when I hover the item BUT it is changing to white when the item is selected....
The only way I managed to change the color is using the following stylesheet:

QListView::item:selected,
QListView::item:selected:active,
QTreeView::item:selected,
QTreeView::item:selected:active{
    border: 1px solid #4286F5;
    background-color: #dfedfa;
    color: black;
}

The problem is that I don't want all my items black. Some should keep a different color.

I'm using a delegate where I've overridden initStyleOption and even there if I force the option.palette to be the color I want it doesn't affect the text color when selected...

Idem if I do this in the paint method... (I've tried what was suggested here)

Any idea how I could do it?

Gojir4

@mbruel said in Dynamic color for a selected QTreeViewItem?:

I'm using a delegate where I've overridden initStyleOption and even there if I force the option.palette to be the color I want it doesn't affect the text color when selected...

Hi,

Which ColorRole do you use when setting palette color ? It should work using QPalette::HighlightedText

QStyleOptionViewItem ViewOption(option);
ViewOption.palette.setColor(QPalette::HighlightedText, desiredColor);

I took this code from here: https://stackoverflow.com/questions/19362443/qtreeview-selection-clears-text-color

mbruel

Well I thought I tried...
Then I was overriding the whole QPalette with the constructor with 9 QBrush...
I've just test your code and it works if I remove any color from the stylesheet on QTreeView:item
Thanks a lot!

Here is my code:

void TreeItemDelegate::initStyleOption(QStyleOptionViewItem *option, const QModelIndex &index) const
{
    QStyledItemDelegate::initStyleOption(option, index);
    option->textElideMode = Qt::ElideNone;

    TreeItem *item = static_cast<const TreeModel*>(index.model())->itemFromIndex(index);

    if (item)
    {
        QColor color = item->data(Qt::ForegroundRole).value<QColor>();
        option->palette.setColor(QPalette::WindowText, color);
        option->palette.setColor(QPalette::HighlightedText, color);

        if (item->isLargeItem())
        {
            option->font.setBold(true);
            option->decorationSize = QSize(24,24);
        }
        if (item->isReadOnly() )
            option->font.setItalic(true);
    }
}