Home · All Classes · Main Classes · Grouped Classes · Modules · Functions

imageviewer.h Example File
^{widgets/imageviewer/imageviewer.h}

 /****************************************************************************
 **
 ** Copyright (C) 2005-2007 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 [email protected].
 **
 ** 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;

     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