/******************************************************************************** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.**** This file is part of the example classes of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 as published by the Free Software Foundation** and appearing in the file LICENSE.GPL included in the packaging of** this file.  Please review the following information to ensure GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#ifndef IMAGEVIEWER_H#define IMAGEVIEWER_H#include <QMainWindow>#include <QPrinter>class QAction;class QLabel;class QMenu;class QScrollArea;class QScrollBar;class ImageViewer : public QMainWindow{    Q_OBJECTpublic:    ImageViewer();private slots:    void open();    void print();    void zoomIn();    void zoomOut();    void normalSize();    void fitToWindow();    void about();private:    void createActions();    void createMenus();    void updateActions();    void scaleImage(double factor);    void adjustScrollBar(QScrollBar *scrollBar, double factor);    QLabel *imageLabel;    QScrollArea *scrollArea;    double scaleFactor;    QPrinter printer;    QAction *openAct;    QAction *printAct;    QAction *exitAct;    QAction *zoomInAct;    QAction *zoomOutAct;    QAction *normalSizeAct;    QAction *fitToWindowAct;    QAction *aboutAct;    QAction *aboutQtAct;    QMenu *fileMenu;    QMenu *viewMenu;    QMenu *helpMenu;};#endif