使用QItemDelegate做的實現

有自動更新進度

要在.pro檔案裡新增 

CONFIG   += c++11

ProgressBarDelegate類

#ifndef PROGRESSBARDELEGATE_H
#define PROGRESSBARDELEGATE_H

#include <QItemDelegate>

class ProgressBarDelegate : public QItemDelegate
{
    Q_OBJECT
public:
    explicit ProgressBarDelegate(QObject *parent = 0);
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;

signals:

public slots:



};

#endif // PROGRESSBARDELEGATE_H
 

#include "progressbardelegate.h"

#include <QPainter>
#include <QApplication>

ProgressBarDelegate::ProgressBarDelegate(QObject *parent) :
    QItemDelegate(parent)
{
}


void ProgressBarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    if(index.column() == 1) {
        int value = index.model()->data(index).toInt();
        QStyleOptionProgressBarV2 progressBarOption;
        progressBarOption.rect = option.rect.adjusted(4, 4, -4, -4);
        progressBarOption.minimum = 0;
        progressBarOption.maximum = 100;
        progressBarOption.textAlignment = Qt::AlignRight;
        progressBarOption.textVisible = true;
        progressBarOption.progress = value;
        progressBarOption.text = tr("%1%").arg(progressBarOption.progress);

        painter->save();
        if (option.state & QStyle::State_Selected) {
            painter->fillRect(option.rect, option.palette.highlight());
                    painter->setBrush(option.palette.highlightedText());
        }
                QApplication::style()->drawControl(QStyle::CE_ProgressBar, &progressBarOption, painter);

        painter->restore();

    } else {
        return QItemDelegate::paint (painter, option, index);
    }
}
 

TableModel類

#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
 

#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 // 設定單元格可編輯,此處註釋,單元格無法被編輯
    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類

#ifndef TABLEVIEW_H
#define TABLEVIEW_H

#include <QTableView>

class TableModel;
class ProgressBarDelegate;

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;
    ProgressBarDelegate *m_progressBarDelegate;

};

#endif // TABLEVIEW_H

#include "tableview.h"

#include "tablemodel.h"
#include "progressbardelegate.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_progressBarDelegate = new ProgressBarDelegate(this);
    this->setItemDelegate(m_progressBarDelegate);
    emit m_model->layoutChanged();
    this->setColumnWidth(1, 500);
}

MainWindow 類

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

class TableView;
class QTimer;

class MainWindow : public QWidget
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();

private:
    void init();
    void initTimer();

public slots:
    void updateProgressValue();

private:
    TableView *tv;
    QTimer *timer;
};

#endif // MAINWINDOW_H

#include "mainwindow.h"

#include "tableview.h"
#include "tablemodel.h"

#include <QLayout>
#include <QVBoxLayout>
#include <QTimer>
#include <QDebug>

MainWindow::MainWindow(QWidget *parent)
    : QWidget(parent)
{
    init();
    initTimer();
}

MainWindow::~MainWindow()
{
    delete tv;
    delete timer;
}

void MainWindow::init()
{
    this->resize(800, 600);
    tv = new TableView(this);
    QVBoxLayout* layout = new QVBoxLayout();

    layout->addWidget(tv);
    this->setLayout(layout);
    //this->layout()->addWidget(tv);


}

void MainWindow::initTimer()
{
    timer = new QTimer(this);
    timer->setInterval(1000);
    connect(timer, SIGNAL(timeout()), this, SLOT(updateProgressValue()));
    timer->start();
}

void MainWindow::updateProgressValue()
{
    TableModel* model = tv->tableModel();
    QVector<QStringList>& data = model->DataVector();
    for (QStringList& v : data) {
        int value =v.at(1).toInt();
        qDebug() << value;
        if (value < 100) {
            value += 2;
            qDebug() << value;
            v[1] = QString::number(value);
            emit model->layoutChanged();
        }

    }
}