qt5base-lts/examples/widgets/itemviews/spreadsheet/spreadsheet.h

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#ifndef SPREADSHEET_H
#define SPREADSHEET_H

#include <QMainWindow>

QT_BEGIN_NAMESPACE
class QAction;
class QLabel;
class QLineEdit;
class QToolBar;
class QTableWidgetItem;
class QTableWidget;
QT_END_NAMESPACE

class SpreadSheet : public QMainWindow
{
    Q_OBJECT
public:
    SpreadSheet(int rows, int cols, QWidget *parent = nullptr);

public slots:
    void updateStatus(QTableWidgetItem *item);
    void updateColor(QTableWidgetItem *item);
    void updateLineEdit(QTableWidgetItem *item);
    void returnPressed();
    void selectColor();
    void selectFont();
    void clear();
    void showAbout();

    void print();

    void actionSum();
    void actionSubtract();
    void actionAdd();
    void actionMultiply();
    void actionDivide();

protected:
    void setupContextMenu();
    void setupContents();

    void setupMenuBar();
    void createActions();

    void actionMath_helper(const QString &title, const QString &op);
    bool runInputDialog(const QString &title,
                        const QString &c1Text,
                        const QString &c2Text,
                        const QString &opText,
                        const QString &outText,
                        QString *cell1, QString *cell2, QString *outCell);
private:
    QToolBar *toolBar;
    QAction *colorAction;
    QAction *fontAction;
    QAction *firstSeparator;
    QAction *cell_sumAction;
    QAction *cell_addAction;
    QAction *cell_subAction;
    QAction *cell_mulAction;
    QAction *cell_divAction;
    QAction *secondSeparator;
    QAction *clearAction;
    QAction *aboutSpreadSheet;
    QAction *exitAction;

    QAction *printAction;

    QLabel *cellLabel;
    QTableWidget *table;
    QLineEdit *formulaInput;

};

void decode_pos(const QString &pos, int *row, int *col);
QString encode_pos(int row, int col);


#endif // SPREADSHEET_H