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# imageviewer.h Example File
widgets/imageviewer/imageviewer.h

     /****************************************************************************
     **
     ** Copyright (C) 2005-$THISYEAR$ $TROLLTECH$. All rights reserved.
     **
     ** This file is part of the $MODULE$ of the Qt Toolkit.
     **
     ** $TROLLTECH_DUAL_LICENSE$
     **
     ** 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_OBJECT

     public:
         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;

     #ifndef QT_NO_PRINTER
         QPrinter printer;
     #endif

         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