Stylesheets and sizeFromContents

Pemdas

I am trying to get a better understanding of the behavior I describe below.

I sub-classed QWidget to create a custom widget. For the sake of this question assume all that I did was add a label.

class MyWidget : public QWidget
{
    Q_OBJECT
    
    public:
        MyWidget();
        ~MyWidget();
    private:
        QLabel myLabel;
}

MyWidget::MyWidget(QWidget *parent = 0) :
 Qwidget(parent),
myLabel(new QLabel("",this)
{
}

....

I have stylesheet loaded into the application that specifies the minimum and maxiume size of MyWidget and the QLabel.

Example:

MyWidget,
MyWidget QLabel {
min-height: 65;
max-height: 65:
min-width: 200;
max-width: 200;
}

I am trying to draw this inside a listview with a custom delegate but the sizeHint function that I wrote does not behave as I would expect.

QSize MyItemDelegate::sizeHint(const QStyleOptionViewItem &option,
               const QModelIndex &index) const
{
    qDebug() << "sizehint" << endl;
    if(index.data().canConvert<MyModelItem>())
    {
        MyModelItem item = qvariant_cast<MyModelItem>(index.data());
        qDebug() << QApplication::style()->sizeFromContents(QStyle::CT_ItemViewItem, &option, QSize(),  item.getItem()) << endl
        
        return style->sizeFromContents(QStyle::CT_ItemViewItem, &option, QSize(),  item.getItem());
    }
    else
    {
        
        qDebug() << "Delegate...something broken" << QStyledItemDelegate::sizeHint( option, index) << endl;
        return QStyledItemDelegate::sizeHint( option, index);
    }

}

MyModelItem is just structure that has pointer to a MyWidget object.

This returns a QSize of 0,37. I am trying to figure out why it is not returning the size that I specified in the stylesheet.

elveatles

I'm not sure if this is going to fix your problem, but I think things like min-width, max-width, etc are supposed to end with px such as 65px; and 200px;. Also, you might want to post this in the General Desktop category. You posted this in Language Bindings which gets a lot less views than General Desktop. But you aren't using PyQt, PySide, etc.