QTableView添加进度条

使用QItemDelegate做的实现

有自动更新进度

要在.pro文件里添加 

CONFIG   += c++11

ProgressBarDelegate类

1. #ifndef PROGRESSBARDELEGATE_H
2. #define PROGRESSBARDELEGATE_H
4. #include <QItemDelegate>
6. class ProgressBarDelegate : public QItemDelegate
7. {
8. Q_OBJECT
9. public:
10. explicit ProgressBarDelegate(QObject *parent = 0);
11. void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
13. signals:
15. public slots:
19. };
21. #endif // PROGRESSBARDELEGATE_H

1. #include "progressbardelegate.h"
3. #include <QPainter>
4. #include <QApplication>
6. ProgressBarDelegate::ProgressBarDelegate(QObject *parent) :
7. QItemDelegate(parent)
8. {
9. }
12. void ProgressBarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
13. {
14. if(index.column() == 1) {
15. int value = index.model()->data(index).toInt();
16. QStyleOptionProgressBarV2 progressBarOption;
17. progressBarOption.rect = option.rect.adjusted(4, 4, -4, -4);
18. progressBarOption.minimum = 0;
19. progressBarOption.maximum = 100;
20. progressBarOption.textAlignment = Qt::AlignRight;
21. progressBarOption.textVisible = true;
22. progressBarOption.progress = value;
23. progressBarOption.text = tr("%1%").arg(progressBarOption.progress);
25. painter->save();
26. if (option.state & QStyle::State_Selected) {
27. painter->fillRect(option.rect, option.palette.highlight());
28. painter->setBrush(option.palette.highlightedText());
29. }
30. QApplication::style()->drawControl(QStyle::CE_ProgressBar, &progressBarOption, painter);
32. painter->restore();
34. } else {
35. return QItemDelegate::paint (painter, option, index);
36. }
37. }

TableModel类

1. #ifndef TABLEMODEL_H
2. #define TABLEMODEL_H
4. #include <QAbstractTableModel>
6. class TableModel : public QAbstractTableModel
7. {
8. Q_OBJECT
9. public:
10. explicit TableModel(QObject *parent = 0);
11. int rowCount(const QModelIndex &parent) const;
12. int columnCount(const QModelIndex &parent) const;
13. QVariant data(const QModelIndex &index, int role) const;
14. Qt::ItemFlags flags(const QModelIndex &index) const;
15. void setHorizontalHeader(const QStringList& headers);
16. QVariant headerData(int section, Qt::Orientation orientation, int role) const;
17. void setData(const QVector<QStringList>& data);
18. QVector<QStringList>& DataVector() {return m_data;}
19. ~TableModel(void);
21. signals:
23. public slots:
25. private:
26. QStringList m_HorizontalHeader;
27. QVector<QStringList> m_data;
29. };
31. #endif // TABLEMODEL_H

1. #include "tablemodel.h"
3. TableModel::TableModel(QObject *parent) :
4. QAbstractTableModel(parent)
5. {
6. }
8. TableModel::~TableModel()
9. {
11. }
14. int TableModel::rowCount(const QModelIndex &parent) const
15. {
16. return m_data.size();
17. }
19. int TableModel::columnCount(const QModelIndex &parent) const
20. {
21. return m_HorizontalHeader.count();
22. }
24. QVariant TableModel::data(const QModelIndex &index, int role) const
25. {
26. if (!index.isValid())
27. return QVariant();
28. if (role == Qt::DisplayRole) {
29. int ncol = index.column();
30. int nrow = index.row();
31. QStringList values = m_data.at(nrow);
32. if (values.size() > ncol)
33. return values.at(ncol);
34. else
35. return QVariant();
36. }
37. return QVariant();
38. }
40. Qt::ItemFlags TableModel::flags(const QModelIndex &index) const
41. {
42. if (!index.isValid())
43. return Qt::NoItemFlags;
45. Qt::ItemFlags flag = QAbstractItemModel::flags(index);
47. // flag|=Qt::ItemIsEditable // 设置单元格可编辑,此处注释,单元格无法被编辑
48. return flag;
49. }
51. void TableModel::setHorizontalHeader(const QStringList &headers)
52. {
53. m_HorizontalHeader = headers;
54. }
57. QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const
58. {
59. if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
60. return m_HorizontalHeader.at(section);
61. }
62. return QAbstractTableModel::headerData(section, orientation, role);
63. }
65. void TableModel::setData(const QVector<QStringList> &data)
66. {
67. m_data = data;
68. }

TableView类

1. #ifndef TABLEVIEW_H
2. #define TABLEVIEW_H
4. #include <QTableView>
6. class TableModel;
7. class ProgressBarDelegate;
9. class TableView : public QTableView
10. {
11. Q_OBJECT
12. public:
13. explicit TableView(QWidget *parent = 0);
14. TableModel* tableModel() {return m_model;}
16. ~TableView();
18. signals:
20. public slots:
22. private:
23. void iniData();
25. private:
26. TableModel *m_model;
27. ProgressBarDelegate *m_progressBarDelegate;
29. };
31. #endif // TABLEVIEW_H

1. #include "tableview.h"
3. #include "tablemodel.h"
4. #include "progressbardelegate.h"
6. TableView::TableView(QWidget *parent) :
7. QTableView(parent)
8. {
9. iniData();
10. }
12. TableView::~TableView()
13. {
14. delete m_model;
15. }
17. void TableView::iniData()
18. {
19. m_model = new TableModel();
20. this->setModel(m_model);
21. QStringList headers;
22. headers << "Id" << "Progress";
23. m_model->setHorizontalHeader(headers);
25. QVector<QStringList> data;
26. data.append(QStringList() << "1" << "22");
27. data.append(QStringList() << "2" << "32");
28. data.append(QStringList() << "3" << "2");
29. data.append(QStringList() << "4" << "80");
30. data.append(QStringList() << "5" << "40");
31. m_model->setData(data);
33. m_progressBarDelegate = new ProgressBarDelegate(this);
34. this->setItemDelegate(m_progressBarDelegate);
35. emit m_model->layoutChanged();
36. this->setColumnWidth(1, 500);
37. }

MainWindow 类

1. #ifndef MAINWINDOW_H
2. #define MAINWINDOW_H
4. #include <QMainWindow>
6. class TableView;
7. class QTimer;
9. class MainWindow : public QWidget
10. {
11. Q_OBJECT
13. public:
14. MainWindow(QWidget *parent = 0);
15. ~MainWindow();
17. private:
18. void init();
19. void initTimer();
21. public slots:
22. void updateProgressValue();
24. private:
25. TableView *tv;
26. QTimer *timer;
27. };
29. #endif // MAINWINDOW_H

1. #include "mainwindow.h"
3. #include "tableview.h"
4. #include "tablemodel.h"
6. #include <QLayout>
7. #include <QVBoxLayout>
8. #include <QTimer>
9. #include <QDebug>
11. MainWindow::MainWindow(QWidget *parent)
12. : QWidget(parent)
13. {
14. init();
15. initTimer();
16. }
18. MainWindow::~MainWindow()
19. {
20. delete tv;
21. delete timer;
22. }
24. void MainWindow::init()
25. {
26. this->resize(800, 600);
27. tv = new TableView(this);
28. QVBoxLayout* layout = new QVBoxLayout();
30. layout->addWidget(tv);
31. this->setLayout(layout);
32. //this->layout()->addWidget(tv);
35. }
37. void MainWindow::initTimer()
38. {
39. timer = new QTimer(this);
40. timer->setInterval(1000);
41. connect(timer, SIGNAL(timeout()), this, SLOT(updateProgressValue()));
42. timer->start();
43. }
45. void MainWindow::updateProgressValue()
46. {
47. TableModel* model = tv->tableModel();
48. QVector<QStringList>& data = model->DataVector();
49. for (QStringList& v : data) {
50. int value =v.at(1).toInt();
51. qDebug() << value;
52. if (value < 100) {
53. value += 2;
54. qDebug() << value;
55. v[1] = QString::number(value);
56. emit model->layoutChanged();
57. }
59. }
60. }