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);
}

alt text
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 alt text
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 ?