Qt 4.8: qtbox.h Example File (demos/boxes/qtbox.h)

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# qtbox.h Example File

demos/boxes/qtbox.h

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** 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 The Qt Company. For licensing terms
     ** and conditions see http://www.qt.io/terms-conditions. For further
     ** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
     ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
     ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
     ** following information to ensure the GNU Lesser General Public License
     ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
     ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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     ** rights. These rights are described in The Qt Company 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
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     ****************************************************************************/

     #ifndef QTBOX_H
     #define QTBOX_H

     #include <QtGui>

     #include <QtGui/qvector3d.h>
     #include "glbuffers.h"

     class ItemBase : public QGraphicsItem
     {
     public:
         enum { Type = UserType + 1 };

         ItemBase(int size, int x, int y);
         virtual ~ItemBase();
         virtual QRectF boundingRect() const;
         virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
     protected:
         virtual ItemBase *createNew(int size, int x, int y) = 0;
         virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
         virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
         virtual void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
         virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
         virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
         virtual void keyPressEvent(QKeyEvent *event);
         virtual void wheelEvent(QGraphicsSceneWheelEvent *event);
         virtual int type() const;
         bool isInResizeArea(const QPointF &pos);

         static void duplicateSelectedItems(QGraphicsScene *scene);
         static void deleteSelectedItems(QGraphicsScene *scene);
         static void growSelectedItems(QGraphicsScene *scene);
         static void shrinkSelectedItems(QGraphicsScene *scene);

         int m_size;
         QTime m_startTime;
         bool m_isResizing;
     };

     class QtBox : public ItemBase
     {
     public:
         QtBox(int size, int x, int y);
         virtual ~QtBox();
         virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
     protected:
         virtual ItemBase *createNew(int size, int x, int y);
     private:
         QVector3D m_vertices[8];
         QVector3D m_texCoords[4];
         QVector3D m_normals[6];
         GLTexture *m_texture;
     };

     class CircleItem : public ItemBase
     {
     public:
         CircleItem(int size, int x, int y);
         virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
     protected:
         virtual ItemBase *createNew(int size, int x, int y);

         QColor m_color;
     };

     class SquareItem : public ItemBase
     {
     public:
         SquareItem(int size, int x, int y);
         virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
     protected:
         virtual ItemBase *createNew(int size, int x, int y);

         QPixmap m_image;
     };

     #endif