Delegate the QtableView colors

Kaguro

Hi Guys!
I have a QtableView with QSqlTableModel model. I would like to achive different color rows and the default celector's frame disappear. I found on the internet some solution for these problems, but i cant use these solutions in the same time.
This is for different row colors:

class ColorDelegate: public QItemDelegate
{
public:
    QColor color;
    ColorDelegate(QColor colo,QObject *parent = 0) : QItemDelegate(parent) {color = colo;}

public:
    virtual void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
    {
        drawBackground(painter, option, index);
        QItemDelegate::paint(painter, option, index);
    }

protected:
    virtual void drawBackground(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
    {
        Q_UNUSED(index);
        painter->fillRect(option.rect, color);
    }
};

and usage:

for (int i = 0;i<model->rowCount();i++) 
{
    if(i%2==0)
        view->setItemDelegateForRow(i,new ColorDelegate( QColor(216, 216, 216),view));
    else
        view->setItemDelegateForRow(i,new ColorDelegate( QColor(238, 236, 238),view));
}

And this is for default non default select (i want to keep the keyboard navigation, so this solution was the good for it)

class NoFocusDelegate : public QStyledItemDelegate
{
protected:
    void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const;
};

void NoFocusDelegate::paint(QPainter* painter, const QStyleOptionViewItem & option, const QModelIndex &index) const
{
    QStyleOptionViewItem itemOption(option);
    if (itemOption.state & QStyle::State_HasFocus)
        itemOption.state = itemOption.state ^ QStyle::State_HasFocus;
    QStyledItemDelegate::paint(painter, itemOption, index);
};

and usage:

view->setItemDelegate(new NoFocusDelegate());

Any ideas to to achieve both? Thanks! (And sorry for my bad english again!)

mrjj

@Kaguro
ah my bad. we used the wrong option here
QStyledItemDelegate::paint(painter, option, index);
should be
QStyledItemDelegate::paint(painter, itemOption, index);

mrjj

Hi
Should not be an issue to combine to one.
QStyledItemDelegate is the replacement for QItemDelegate
So you can just do merge the 2 delegates to one.

Kaguro

@mrjj hmm, and how can i merge to one? Can i get an example? Cuse when i tried it i did something wrong :(

mrjj

@Kaguro
Hi
Like

class ColorDelegate: public QStyledItemDelegate
{
public:
    QColor color;
    ColorDelegate(QColor colo, QObject *parent = 0) : QStyledItemDelegate(parent)
    {
        color = colo;
    }

public:
    virtual void paint(QPainter *painter, const QStyleOptionViewItem &option,
                       const QModelIndex &index) const
    {
        drawBackground(painter, option, index);
        QStyleOptionViewItem itemOption(option);
        if (itemOption.state & QStyle::State_HasFocus)
            itemOption.state = itemOption.state ^ QStyle::State_HasFocus;
        QStyledItemDelegate::paint(painter, option, index);
    }

protected:
    virtual void drawBackground(QPainter *painter, const QStyleOptionViewItem &option,
                                const QModelIndex &index) const
    {
        Q_UNUSED(index);
        painter->fillRect(option.rect, color);
    }
};

Kaguro

@mrjj If i use it this way like your suggestion:

for (int i = 0;i<model->rowCount();i++) 
{
    if(i%2==0)
        view->setItemDelegateForRow(i,new ColorDelegate( QColor(216, 216, 216),view));
    else
        view->setItemDelegateForRow(i,new ColorDelegate( QColor(238, 236, 238),view));
}

the rows repaint is working but the default select frame is not disapear :(

mrjj

@Kaguro
ah my bad. we used the wrong option here
QStyledItemDelegate::paint(painter, option, index);
should be
QStyledItemDelegate::paint(painter, itemOption, index);

Kaguro

@mrjj and it works! You are my hero! :D