qtbox.h Example File
demos/boxes/qtbox.h

 /****************************************************************************
 **
 ** Copyright (C) 2009 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.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 ** 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, Nokia gives you certain additional
 ** 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.
 **
 ** If you have questions regarding the use of this file, please contact
 ** Nokia at qt-info@nokia.com.
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #ifndef QTBOX_H
 #define QTBOX_H

 #include <QtGui>

 #include "vector.h"
 #include "glbuffers.h"

 class ItemBase : public QObject, public QGraphicsItem
 {
     Q_OBJECT
 public:
     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);
     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:
     gfx::Vector3f m_vertices[8];
     gfx::Vector2f m_texCoords[4];
     gfx::Vector3f 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