Size of button

[baray98]

Hi All,

I have made a delegate that will display a button at on every item in my QTreeView. I have provided the size hint of my button properly. What i want to accomplish is that I want my button to have a constant size, Since my treemodel contains only 1 column my button will increase/decrease according to width of my coloumn which I dont want to happen. How can i prevent this from happening?

Note:
I was painting the button its not a composite widget so i dont have size policy

heres the code when i paint it

void MyDelegate::paint(QPainter *painter,
                                  const QStyleOptionViewItem &option,
                                  const QModelIndex &index) const
{
    const QAbstractItemModel *model = index.model();
    Q_ASSERT(model);
 
    if (qVariantCanConvert<MyCustomsClass>(index.data(MyModel::DeviceInfoRole)))
    {
        MyCustomsClass info = qVariantValue<MyCustomsClass>(index.data(MyModel::DeviceInfoRole));
        QStyleOptionButton buttonOption;
 
        buttonOption.state = option.state;
#ifdef Q_WS_MAC
        buttonOption.state |= QStyle::State_Raised;
#endif
        buttonOption.state &= ~QStyle::State_HasFocus;
 
        buttonOption.rect = option.rect ;
        buttonOption.palette = option.palette;
        buttonOption.features = QStyleOptionButton::None;
        m_view->style()->drawControl(QStyle::CE_PushButton, &buttonOption, painter, m_view);
 
        QStyleOption branchOption;
        static const int i = 9; // ### hardcoded in qcommonstyle.cpp
 
        QRect r = option.rect;
 
        branchOption.rect = QRect(r.left() + i/2, r.top() + (r.height() - i)/2, i, i);
        branchOption.palette = option.palette;
        branchOption.state = QStyle::State_Children;
 
          // draw text
        QRect textrect = QRect(r.left() + i*2, r.top(), r.width() - ((5*i)/2), r.height());
        QString text = elidedText(option.fontMetrics, textrect.width(), Qt::ElideMiddle,
                                  info .name());
        m_view->style()->drawItemText(painter, textrect, Qt::AlignCenter,
                                      option.palette, m_view->isEnabled(), text);
 
 
 
    }
}

void MyDelegate::paint(QPainter *painter,
                                  const QStyleOptionViewItem &option,
                                  const QModelIndex &index) const
{
    const QAbstractItemModel *model = index.model();
    Q_ASSERT(model);

    if (qVariantCanConvert<MyCustomsClass>(index.data(MyModel::DeviceInfoRole)))
    {
        MyCustomsClass info = qVariantValue<MyCustomsClass>(index.data(MyModel::DeviceInfoRole));
        QStyleOptionButton buttonOption;

        buttonOption.state = option.state;
#ifdef Q_WS_MAC
        buttonOption.state |= QStyle::State_Raised;
#endif
        buttonOption.state &= ~QStyle::State_HasFocus;

        buttonOption.rect = option.rect ;
        buttonOption.palette = option.palette;
        buttonOption.features = QStyleOptionButton::None;
        m_view->style()->drawControl(QStyle::CE_PushButton, &buttonOption, painter, m_view);

        QStyleOption branchOption;
        static const int i = 9; // ### hardcoded in qcommonstyle.cpp

        QRect r = option.rect;

        branchOption.rect = QRect(r.left() + i/2, r.top() + (r.height() - i)/2, i, i);
        branchOption.palette = option.palette;
        branchOption.state = QStyle::State_Children;

          // draw text
        QRect textrect = QRect(r.left() + i*2, r.top(), r.width() - ((5*i)/2), r.height());
        QString text = elidedText(option.fontMetrics, textrect.width(), Qt::ElideMiddle,
                                  info .name());
        m_view->style()->drawItemText(painter, textrect, Qt::AlignCenter,
                                      option.palette, m_view->isEnabled(), text);



    }
}

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baray98

[jacek]

What is buttonOption.rect responsible for?