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#ifndef IMAGEVIEWER_H
#define IMAGEVIEWER_H

#include <QMainWindow>
#ifndef QT_NO_PRINTER
#include <QPrinter>
#endif

QT_BEGIN_NAMESPACE
class QAction;
class QLabel;
class QMenu;
class QScrollArea;
class QScrollBar;
QT_END_NAMESPACE

//! [0]
class ImageViewer : public QMainWindow
{
    Q_OBJECT

public:
    ImageViewer();
    bool loadFile(const QString &);

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;
};
//! [0]

#endif