QTableView 一列添加两个按钮

在QTableView的一列里添加两个按钮，之前添加一个按钮的思路是一样的，只是计算了一下按钮的宽，放两个按钮而已。

添加一个按钮的例子：QTableView 添加按钮

本例源代码：QtTowButtons.rar

看一下列的效果

看一下添加两个按钮的效果点击第一个按钮弹出 but1 +当前列 点击第二个按钮弹出but2 + 当前行

下面是主要实现

继承自 QItemDelegate

主要是实现 了它的painter方法，把两个自定义的按钮绘制到视图并保存

还有editorEvent事件，用来处理点击事件，在点击时我们算一下鼠标的坐标在哪个按钮下，

再处理相应的点击事件

#ifndef BUTTONDELEGATE_H

#define BUTTONDELEGATE_H



#include <QItemDelegate>



class ButtonDelegate : public QItemDelegate

{

    Q_OBJECT

public:

    explicit ButtonDelegate(QObject *parent = 0);

    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;

    bool editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index);



signals:



public slots:



private:

    void showMsg(QString str);



private:



    typedef QMap<QModelIndex, QPair<QStyleOptionButton*, QStyleOptionButton*>* >  collButtons;

    collButtons m_btns;



};



#endif // BUTTONDELEGATE_H

按钮的具体实现

#include "buttondelegate.h"



#include <QApplication>

#include <QMouseEvent>

#include <QMessageBox>

#include <QPainter>

#include <QStyleOption>

#include <QDesktopWidget>



ButtonDelegate::ButtonDelegate(QObject *parent) :

    QItemDelegate(parent)

{

}





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

{

    QPair<QStyleOptionButton*, QStyleOptionButton*>* buttons = m_btns.value(index);

    if (!buttons) {

        QStyleOptionButton* button1 = new QStyleOptionButton();

        //button1->rect = option.rect.adjusted(4, 4, -(option.rect.width() / 2 + 4) , -4); //

        button1->text = "X";

        button1->state |= QStyle::State_Enabled;



        QStyleOptionButton* button2 = new QStyleOptionButton();

        //button2->rect = option.rect.adjusted(button1->rect.width() + 4, 4, -4, -4);

        button2->text = "Y";

        button2->state |= QStyle::State_Enabled;

        buttons =new  QPair<QStyleOptionButton*, QStyleOptionButton*>(button1, button2);

        (const_cast<ButtonDelegate *>(this))->m_btns.insert(index, buttons);

    }

    buttons->first->rect = option.rect.adjusted(4, 4, -(option.rect.width() / 2 + 4) , -4); //

    buttons->second->rect = option.rect.adjusted(buttons->first->rect.width() + 4, 4, -4, -4);

    painter->save();



    if (option.state & QStyle::State_Selected) {

        painter->fillRect(option.rect, option.palette.highlight());



    }

    painter->restore();

    QApplication::style()->drawControl(QStyle::CE_PushButton, buttons->first, painter);

    QApplication::style()->drawControl(QStyle::CE_PushButton, buttons->second, painter);

}



bool ButtonDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)

{

    if (event->type() == QEvent::MouseButtonPress) {



        QMouseEvent* e =(QMouseEvent*)event;



        if (m_btns.contains(index)) {

            QPair<QStyleOptionButton*, QStyleOptionButton*>* btns = m_btns.value(index);

            if (btns->first->rect.contains(e->x(), e->y())) {

                btns->first->state |= QStyle::State_Sunken;

            }

            else if(btns->second->rect.contains(e->x(), e->y())) {

                btns->second->state |= QStyle::State_Sunken;

            }

        }

    }

    if (event->type() == QEvent::MouseButtonRelease) {

        QMouseEvent* e =(QMouseEvent*)event;



        if (m_btns.contains(index)) {

            QPair<QStyleOptionButton*, QStyleOptionButton*>* btns = m_btns.value(index);

            if (btns->first->rect.contains(e->x(), e->y())) {

                btns->first->state &= (~QStyle::State_Sunken);

                showMsg(tr("btn1 column %1").arg(index.column()));

            } else if(btns->second->rect.contains(e->x(), e->y())) {

                btns->second->state &= (~QStyle::State_Sunken);

                showMsg(tr("btn2 row %1").arg(index.row()));

            }

        }

    }

}



void ButtonDelegate::showMsg(QString str)

{

    QMessageBox msg;

    msg.setText(str);

    msg.exec();

}

好了自定义按钮处理完了

我们建一个Table添加一些数据

#ifndef TABLEMODEL_H

#define TABLEMODEL_H



#include <QAbstractTableModel>



class TableModel : public QAbstractTableModel

{

    Q_OBJECT

public:

    explicit TableModel(QObject *parent = 0);

    int rowCount(const QModelIndex &parent) const;

    int columnCount(const QModelIndex &parent) const;

    QVariant data(const QModelIndex &index, int role) const;

    Qt::ItemFlags flags(const QModelIndex &index) const;

    void setHorizontalHeader(const QStringList& headers);

    QVariant headerData(int section, Qt::Orientation orientation, int role) const;

    void setData(const QVector<QStringList>& data);

    QVector<QStringList>& DataVector() {return m_data;}

    ~TableModel(void);



signals:



public slots:





private:

    QStringList m_HorizontalHeader;

    QVector<QStringList> m_data;

};



#endif // TABLEMODEL_H

model的实现 并添加一些数据

#include "tablemodel.h"



TableModel::TableModel(QObject *parent) :

    QAbstractTableModel(parent)

{

}



TableModel::~TableModel()

{



}





int TableModel::rowCount(const QModelIndex &parent) const

{

    return m_data.size();

}



int TableModel::columnCount(const QModelIndex &parent) const

{

    return m_HorizontalHeader.count();

}



QVariant TableModel::data(const QModelIndex &index, int role) const

{

    if (!index.isValid())

        return QVariant();

    if (role == Qt::DisplayRole) {

        int ncol = index.column();

        int nrow =  index.row();

        QStringList values = m_data.at(nrow);

        if (values.size() > ncol)

            return values.at(ncol);

        else

        return QVariant();

    }

    return QVariant();

}



Qt::ItemFlags TableModel::flags(const QModelIndex &index) const

{

    if (!index.isValid())

        return Qt::NoItemFlags;



    Qt::ItemFlags flag = QAbstractItemModel::flags(index);



    // flag|=Qt::ItemIsEditable // 设置单元格可编辑,此处注释,单元格无法被编辑

    return flag;

}



void TableModel::setHorizontalHeader(const QStringList &headers)

{

    m_HorizontalHeader =  headers;

}





QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const

{

    if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {

        return m_HorizontalHeader.at(section);

    }

    return QAbstractTableModel::headerData(section, orientation, role);

}



void TableModel::setData(const QVector<QStringList> &data)

{

    m_data = data;

}

TableView的实现，和model关联

#ifndef TABLEVIEW_H

#define TABLEVIEW_H



#include <QTableView>

#include "tablemodel.h"

#include "buttondelegate.h"



class TableView : public QTableView

{

    Q_OBJECT

public:

    explicit TableView(QWidget *parent = 0);

    TableModel* tableModel() {return m_model;}



    ~TableView();



signals:



public slots:



private:

    void iniData();



private:

    TableModel *m_model;

    ButtonDelegate *m_buttonDelegate;



};



#endif // TABLEVIEW_H

#include "tableview.h"



#include "tablemodel.h"

#include "buttondelegate.h"



TableView::TableView(QWidget *parent) :

    QTableView(parent)

{

    iniData();

}



TableView::~TableView()

{

    delete m_model;

}



void TableView::iniData()

{

    m_model = new TableModel();

    this->setModel(m_model);

    QStringList headers;

    headers << "Id" << "Progress";

    m_model->setHorizontalHeader(headers);



    QVector<QStringList> data;

    data.append(QStringList() << "1" << "22");

    data.append(QStringList() << "2" << "32");

    data.append(QStringList() << "3" << "2");

    data.append(QStringList() << "4" << "80");

    data.append(QStringList() << "5" << "40");

    m_model->setData(data);



    m_buttonDelegate = new ButtonDelegate(this);

    this->setItemDelegateForColumn(1, m_buttonDelegate);

    emit m_model->layoutChanged();

    this->setColumnWidth(1, 500);

}

这就完成了

我们看一下调用

    this->resize(800, 600);

    TableView *tv = new TableView(this);

    QVBoxLayout* layout = new QVBoxLayout();



    layout->addWidget(tv);

    this->setLayout(layout);