The proxy in Qt TableView inherits the overriding paint function and does not move with the slider bar

[fanxinglanyu]

This is code:

#ifndef DELETETOOLBUTTONDELEGATE_H
#define DELETETOOLBUTTONDELEGATE_H

#include    <QObject>
#include    <QWidget>
#include    <QItemDelegate>
#include    <QMap>
#include    <QStyleOptionButton>
#include    <QModelIndex>

class DeleteToolButtonDelegate :public QItemDelegate
{
    Q_OBJECT
public:
    DeleteToolButtonDelegate(QObject *parent=0);


    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                          const QModelIndex &index) const Q_DECL_OVERRIDE;

    void setEditorData(QWidget *editor, const QModelIndex &index) const Q_DECL_OVERRIDE;

    void setModelData(QWidget *editor, QAbstractItemModel *model,
                      const QModelIndex &index) const Q_DECL_OVERRIDE;

    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option,
                              const QModelIndex &index) const Q_DECL_OVERRIDE;

    void paint(QPainter *painter, const QStyleOptionViewItem &option,
        const QModelIndex & index ) const Q_DECL_OVERRIDE;
private:
    QMap<QModelIndex, QStyleOptionButton*> m_btns;

signals:
    void deleteCommodityData() const;
};

#endif // DELETETOOLBUTTONDELEGATE_H

void DeleteToolButtonDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{


    QStyleOptionButton* button = m_btns.value(index);

    if (!button) {
        button = new QStyleOptionButton();
       button->rect = option.rect.adjusted(0, 0, 0, 0);
        //button->rect =  QRect(option.rect.left(), option.rect.top(), option.rect.width(), option.rect.height());
        //button->text = "X";
        button->state |= QStyle::State_Enabled;
        button->icon = QIcon(":/Image/sc.png");
        button->iconSize = QSize(option.rect.width(), option.rect.height());

        (const_cast<DeleteToolButtonDelegate*>(this))->m_btns.insert(index, button);
    }
    painter->save();

    if (option.state & QStyle::State_Selected) {
        painter->fillRect(option.rect, option.palette.highlight());

    }
    painter->restore();
    QApplication::style()->drawControl(QStyle::CE_PushButton, button, painter);
}

I need your help! Thanks!

[SGaist]

Hi,

Please explain what you expect and what currently happens. Your issue is not obvious.

On a side note, the thread title should be short and meaningful and the details go into the main text box.

[fanxinglanyu]

This image
Interface one and interface two are the same interface

[SGaist]

What exactly are you expecting ?

[fanxinglanyu]

The problem is that the deleted icon doesn't move as the slider moves. I actually need to remove the icon to move along with the slider.

[SGaist]

Why don't you use a QStyledItemDelegate ?

[fanxinglanyu]

@SGaist said in The proxy in Qt TableView inherits the overriding paint function and does not move with the slider bar:

QStyledItemDelegate

The effect is the same, the delete icon still doesn't follow the slider

[SGaist]

Can you provide a minimal compilable example that shows this behaviour ?