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

Qt Reference Documentation

# view.h Example File

demos/chip/view.h

     /****************************************************************************
     **
     ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the demonstration applications of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** GNU Lesser General Public License Usage
     ** 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.
     **
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     ** rights. These rights are described in the Nokia 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.
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     ** conditions contained in a signed written agreement between you and Nokia.
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     #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