Qt 4.8: view.h Example File (demos/chip/view.h)

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# view.h Example File

demos/chip/view.h

     /****************************************************************************
     **
     ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the demonstration applications of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** Commercial License Usage
     ** Licensees holding valid commercial Qt licenses may use this file in
     ** accordance with the commercial license agreement provided with the
     ** Software or, alternatively, in accordance with the terms contained in
     ** a written agreement between you and Digia.  For licensing terms and
     ** conditions see http://qt.digia.com/licensing.  For further information
     ** use the contact form at http://qt.digia.com/contact-us.
     **
     ** GNU Lesser General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU Lesser
     ** General Public License version 2.1 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.LGPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU Lesser General Public License version 2.1 requirements
     ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     **
     ** In addition, as a special exception, Digia gives you certain additional
     ** rights.  These rights are described in the Digia Qt LGPL Exception
     ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
     ** met: http://www.gnu.org/copyleft/gpl.html.
     **
     **
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #ifndef VIEW_H
     #define VIEW_H

     #include <QFrame>
     #include <QGraphicsView>

     QT_FORWARD_DECLARE_CLASS(QLabel)
     QT_FORWARD_DECLARE_CLASS(QSlider)
     QT_FORWARD_DECLARE_CLASS(QToolButton)

     class View;

     class GraphicsView : public QGraphicsView
     {
         Q_OBJECT
     public:
         GraphicsView(View *v) : QGraphicsView(), view(v) { }

     protected:
         void wheelEvent(QWheelEvent *);

     private:
         View *view;
     };

     class View : public QFrame
     {
         Q_OBJECT
     public:
         View(const QString &name, QWidget *parent = 0);

         QGraphicsView *view() const;

     public slots:
         void zoomIn(int level = 1);
         void zoomOut(int level = 1);

     private slots:
         void resetView();
         void setResetButtonEnabled();
         void setupMatrix();
         void togglePointerMode();
         void toggleOpenGL();
         void toggleAntialiasing();
         void print();
         void rotateLeft();
         void rotateRight();

     private:
         GraphicsView *graphicsView;
         QLabel *label;
         QLabel *label2;
         QToolButton *selectModeButton;
         QToolButton *dragModeButton;
         QToolButton *openGlButton;
         QToolButton *antialiasButton;
         QToolButton *printButton;
         QToolButton *resetButton;
         QSlider *zoomSlider;
         QSlider *rotateSlider;
     };

     #endif