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QTableView带可编辑进度条

2024-07-29 20:44:06   220人阅读

main文件与上一个例子完全一致，也使用QStandardItemModel，关键是有这句：QStandardItem.setEditable(false); 

继承QAbstractItemDelegate后，覆盖4个函数（全部经过验证，都是自带后覆盖）：

class BarDelegate : public QAbstractItemDelegate{public:BarDelegate( QObject *parent = 0 );void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const;QSize sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const;QWidget *createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const;void setEditorData( QWidget *editor, const QModelIndex &index ) const;void setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const;void updateEditorGeometry( QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index ) const;};

进度条本身的代码不贴了，直接贴这四个函数：

QWidget *BarDelegate::createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const{  QSlider *slider = new QSlider( parent );    slider->setAutoFillBackground( true );  slider->setOrientation( Qt::Horizontal );  slider->setRange( 0, 100 );  slider->installEventFilter( const_cast<BarDelegate*>(this) );    return slider;}void BarDelegate::updateEditorGeometry( QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index ) const{  editor->setGeometry( option.rect );}void BarDelegate::setEditorData( QWidget *editor, const QModelIndex &index ) const{  int value = http://www.mamicode.com/index.model()->data( index, Qt::DisplayRole ).toInt();  static_cast<QSlider*>( editor )->setValue( value );}void BarDelegate::setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const{  model->setData( index, static_cast<QSlider*>( editor )->value() ); // 这句很关键，把model的数据也修改了}

 

QTableView带可编辑进度条


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