QHeaderView行表头移动，Model数据跟着移动且可以保存

QHeaderView行表头移动，Model数据跟着移动且可以保存

基于Qt6.4.5环境下的程序，能够通过移动QHeaderView 移动行表头，同时移动过程中model中的数据实时跟着移动，最后可以保存在QSetting中，第二次打开是移动后数据。
保存到xml版的程序后续会发布，感谢支持

haderview.h

class DraggableHeaderView : public QHeaderView {
    Q_OBJECT
public:
    DraggableHeaderView(Qt::Orientation orientation, QWidget *parent = nullptr);
protected:
    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;

public:
    int section = -1;
    QWidget* m_pWidget;
    bool m_bOffsetd=false;
};

headerview.cpp

DraggableHeaderView::DraggableHeaderView(Qt::Orientation orientation, QWidget *parent)
    : QHeaderView(orientation, parent)
    ,m_pWidget(parent){
    setSectionsMovable(true);
    setSelectionBehavior(QAbstractItemView::SelectItems);
}

void DraggableHeaderView::mousePressEvent(QMouseEvent *event) {
    if (event->button() == Qt::LeftButton) {
        section = logicalIndexAt(event->pos()); 	 // 获取逻辑坐标
        QTableView *pTable = qobject_cast<QTableView *>(m_pWidget);
        pTable->setCurrentIndex(pTable->model()->index(0,section));
    }
    QHeaderView::mousePressEvent(event);
}

void DraggableHeaderView::mouseMoveEvent(QMouseEvent *event) {

    if (event->buttons() & Qt::LeftButton && section >= 0) {

        int nMoteTo = visualIndex(logicalIndexAt(event->pos()));  //将逻辑坐标转换成可视坐标

        if (nMoteTo < 0) {
            nMoteTo =visualIndex(section);
        }
        if (nMoteTo != visualIndex(section)) {
            m_bOffsetd = true;
            swapSections(visualIndex(section), nMoteTo);
        }
    }
    QHeaderView::mouseMoveEvent(event);
}

void DraggableHeaderView::mouseReleaseEvent(QMouseEvent *event) {
    if (m_bOffsetd == true){
        QSettings settings("PRSA","MoveableHeaderView.ini");  //需要保存的注册表中目录名和文件名
        QVariant sequence = this->saveState();
        settings.setValue("headerState",sequence);
    }
    m_bOffsetd = false;
    QHeaderView::mouseReleaseEvent(event);
}

mainwindow.cpp

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
    ,m_pTableModel(nullptr)

{
    ui->setupUi(this);
    ui->tableView->horizontalHeader()->setSectionsMovable(true);
    ui->tableView->setSelectionBehavior(QAbstractItemView::SelectColumns);	//拖动列
    m_pTableModel = new QStandardItemModel(this);
    m_pTableModel->setColumnCount(5);
    m_pTableModel->setRowCount(2);

    QStringList headerNames;
    headerNames<<"a"<<"b"<<"c"<<"d"<<"e";
    m_pTableModel->setHorizontalHeaderLabels(headerNames);

    QStringList datas;
    datas<<"1"<<"2"<<"3"<<"4"<<"5";
    for ( int row = 0; row < m_pTableModel->rowCount(); ++row){
        for ( int col = 0; col < m_pTableModel->columnCount(); ++ col){
            m_pTableModel->setItem(row,col,new QStandardItem(datas[col]));
        }
    }


    ui->tableView->setModel(m_pTableModel);

    DraggableHeaderView *pHeaderView = new DraggableHeaderView(Qt::Horizontal,ui->tableView);
    ui->tableView->setHorizontalHeader(pHeaderView);
    loadTableHeader();

}

MainWindow::~MainWindow()
{
    delete ui;
}
void MainWindow::loadTableHeader()  //加载表头函数，该函数再第二次打开的时候会读取文件中的信息
{
    QSettings settings("PRSA", "MoveableHeaderView.ini");
    QVariant sequence = settings.value("headerState");
    if (sequence.isValid()) {
        ui->tableView->horizontalHeader()->restoreState(sequence.toByteArray());
    }
}

所有文件可以通过下载文件获取，免费的哦。

https://download.youkuaiyun.com/download/J_admin/89767462