mainwindow.h Example File

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#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include "diagramitem.h"
#include <QMainWindow>
class DiagramScene;
class QAction;
class QToolBox;
class QSpinBox;
class QComboBox;
class QFontComboBox;
class QButtonGroup;
class QLineEdit;
class QGraphicsTextItem;
class QFont;
class QToolButton;
class QAbstractButton;
class QGraphicsView;
class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
   MainWindow();
private slots:
    void backgroundButtonGroupClicked(QAbstractButton *button);
    void buttonGroupClicked(int id);
    void deleteItem();
    void pointerGroupClicked(int id);
    void bringToFront();
    void sendToBack();
    void itemInserted(DiagramItem *item);
    void textInserted(QGraphicsTextItem *item);
    void currentFontChanged(const QFont &font);
    void fontSizeChanged(const QString &size);
    void sceneScaleChanged(const QString &scale);
    void textColorChanged();
    void itemColorChanged();
    void lineColorChanged();
    void textButtonTriggered();
    void fillButtonTriggered();
    void lineButtonTriggered();
    void handleFontChange();
    void itemSelected(QGraphicsItem *item);
    void about();
private:
    void createToolBox();
    void createActions();
    void createMenus();
    void createToolbars();
    QWidget *createBackgroundCellWidget(const QString &text,
                                        const QString &image);
    QWidget *createCellWidget(const QString &text,
                              DiagramItem::DiagramType type);
    QMenu *createColorMenu(const char *slot, QColor defaultColor);
    QIcon createColorToolButtonIcon(const QString &image, QColor color);
    QIcon createColorIcon(QColor color);
    DiagramScene *scene;
    QGraphicsView *view;
    QAction *exitAction;
    QAction *addAction;
    QAction *deleteAction;
    QAction *toFrontAction;
    QAction *sendBackAction;
    QAction *aboutAction;
    QMenu *fileMenu;
    QMenu *itemMenu;
    QMenu *aboutMenu;
    QToolBar *textToolBar;
    QToolBar *editToolBar;
    QToolBar *colorToolBar;
    QToolBar *pointerToolbar;
    QComboBox *sceneScaleCombo;
    QComboBox *itemColorCombo;
    QComboBox *textColorCombo;
    QComboBox *fontSizeCombo;
    QFontComboBox *fontCombo;
    QToolBox *toolBox;
    QButtonGroup *buttonGroup;
    QButtonGroup *pointerTypeGroup;
    QButtonGroup *backgroundButtonGroup;
    QToolButton *fontColorToolButton;
    QToolButton *fillColorToolButton;
    QToolButton *lineColorToolButton;
    QAction *boldAction;
    QAction *underlineAction;
    QAction *italicAction;
    QAction *textAction;
    QAction *fillAction;
    QAction *lineAction;
};
#endif // MAINWINDOW_H