QTableView编程——表格内添加可拖拽控件

QTableView编程——表格内添加可拖拽控件

效果

初始状态

按钮拖拽后

代码

• customtableview.cpp

#include "customtableview.h"

#include 
#include 
#include 
#include 
#include 
CustomTableView::CustomTableView(QWidget *parent) :
    QTableView(parent)
{
    setAcceptDrops(true);
    setDragEnabled(true);
    setDragDropMode(DragDrop);
}


bool CustomTableView::eventFilter(QObject *target, QEvent *event)
{
    static bool isHover = false;
    if (event->type() == QEvent::MouseButtonPress)
    {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
        QPoint globalPos = mouseEvent->globalPos();
        QPoint viewportPos = this->viewport()->mapFromGlobal(globalPos);
        RawIndex = this->indexAt(viewportPos);
        qDebug() << "INPUT=========================" <<RawIndex;
        if (RawIndex.isValid())
        {
            if (QPushButton *button = qobject_cast<QPushButton *>(target))
            {

                isHover=true;
            }
        }
    } else if(event->type() == QEvent::MouseButtonRelease&&isHover) {
        QPushButton *button = qobject_cast<QPushButton *>(target);
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
        QPoint globalPos = mouseEvent->globalPos();
        QPoint viewportPos = this->viewport()->mapFromGlobal(globalPos);

        QModelIndex index = this->indexAt(viewportPos);

        if (index.isValid()) {
            QWidget *widget = indexWidget(index);
            QLayout* existingLayout = widget->layout();
            qDebug() << "OUTPUT=========================" <<index;
            if (index != RawIndex) {
                existingLayout->addWidget(button);
            }
        }

        isHover=false;
    }
    return false;
}

• customtableview.h

#ifndef CUSTOMTABLEVIEW_H
#define CUSTOMTABLEVIEW_H
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
class CustomTableView : public QTableView
{
public:
    CustomTableView(QWidget *parent = nullptr);
protected:
    bool eventFilter(QObject *target, QEvent *event) override;

    QModelIndex RawIndex;
};
#endif // CUSTOMTABLEVIEW_H

• mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include 

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = nullptr);
    ~MainWindow();

    void initMyStandardItemModel();

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

• mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "customtableview.h"
#include 
#include 
#include 
#include 
#include 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    initMyStandardItemModel();
}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::initMyStandardItemModel()
{
    QPushButton* b = ui->pushButton;
    b->setFixedSize(120, 40);
    connect(b, &QPushButton::clicked, this, [=]() {
        QDialog* dialog = new QDialog(this);
        dialog->setFixedSize(1680, 420);

        QStandardItemModel* model = new QStandardItemModel(1, 3);


        CustomTableView *view= new CustomTableView(dialog);


        view->setModel(model);
        view->setObjectName("view");
        view->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);
        view->horizontalHeader()->setDefaultSectionSize(150);
        view->verticalHeader()->setSectionResizeMode(QHeaderView::Fixed);
        view->verticalHeader()->setDefaultSectionSize(240);
        view->setGeometry(QRect(50, 50, 640, 420));
        view->horizontalHeader()->setSectionResizeMode(QHeaderView::Interactive);


        QStringList headerList;
        headerList << "Driver" << "Dest"<< "Choose1";
        model->setHorizontalHeaderLabels(headerList);


        QStringList datadrilist;
        datadrilist << "111" << "222" << "333";



        // the first col
        QWidget *driwidget1 = new QWidget;
        driwidget1->setObjectName("driwidget1");
        QVBoxLayout *drilayout1 = new QVBoxLayout(driwidget1);

        QPushButton *button1 = new QPushButton("Button1", driwidget1);
        button1->setObjectName("button1");
        button1->installEventFilter(view);
        button1->setFixedSize(80, 40);
        drilayout1->addWidget(button1);
        QPushButton *button2 = new QPushButton("Button2", driwidget1);
        button2->setObjectName("button2");
        button2->installEventFilter(view);
        button2->setFixedSize(80, 40);
        drilayout1->addWidget(button2);
        QPushButton *button3 = new QPushButton("Button3", driwidget1);
        button3->setObjectName("button3");
        button3->installEventFilter(view);
        button3->setFixedSize(80, 40);
        drilayout1->addWidget(button3);
        driwidget1->setLayout(drilayout1);
        view->setIndexWidget(model->index(0, 0), driwidget1);





        //the second col
        QWidget *driwidget2 = new QWidget;
        driwidget2->setObjectName("driwidget2");
        QVBoxLayout *drilayout2 = new QVBoxLayout(driwidget2);

        QPushButton *button21 = new QPushButton("Button21", driwidget2);
        button21->setObjectName("button21");
        button21->installEventFilter(view);
        button21->setFixedSize(80, 40);
        drilayout2->addWidget(button21);
        QPushButton *button22 = new QPushButton("Button22", driwidget2);
        button22->setObjectName("button22");
        button22->installEventFilter(view);
        button22->setFixedSize(80, 40);
        drilayout2->addWidget(button22);
        QPushButton *button23 = new QPushButton("Button23", driwidget2);
        button23->setObjectName("button23");
        button23->installEventFilter(view);
        drilayout2->addWidget(button23);
        button23->setFixedSize(80, 40);

        driwidget2->setLayout(drilayout2);
        view->setIndexWidget(model->index(0, 1), driwidget2);



        // the third col
        QWidget *driwidget3 = new QWidget;
        QVBoxLayout *drilayout3 = new QVBoxLayout(driwidget3);
        for (int i = 0; i < datadrilist.size(); i++) {
            QPushButton* button = new QPushButton(datadrilist.at(i), driwidget3);
            button->installEventFilter(view);
            button->setFixedSize(80, 40);
            drilayout3->addWidget(button);
        }


        driwidget3->setLayout(drilayout3);
        drilayout3->setObjectName("drilayout3");
        view->setIndexWidget(model->index(0, 2), driwidget3);



        QStringList dributtonLabels;
        QList<QPushButton*> dributtons = driwidget1->findChildren<QPushButton*>();
        foreach(QPushButton* button, dributtons)
        {
            dributtonLabels << button->text();
        }

        // 打印输出所有按钮的文本
//        qDebug() << dributtonLabels;

        QStringList destbuttonLabels;
        QList<QPushButton*> destbuttons = driwidget2->findChildren<QPushButton*>();
        foreach(QPushButton* button, destbuttons)
        {
            destbuttonLabels << button->text();
        }

        // 打印输出所有按钮的文本
//        qDebug() << destbuttonLabels;
        dialog->exec();  // 调用 QDialog 的 exec() 函数显示对话框
    });
//    view->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
//    view->verticalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
}

• main.cpp

#include "mainwindow.h"
#include 

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}