- Qt 5.5
- Qt Widgets
- Boxes
- qtbox.h Example File
- Qt 5.5.1 Reference Documentation

# qtbox.h Example File

graphicsview/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.
    **
    ** $QT_BEGIN_LICENSE:LGPL21$
    ** 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.
    **
    ** As a special exception, The Qt Company gives you certain additional
    ** rights. These rights are described in The Qt Company LGPL Exception
    ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    #ifndef QTBOX_H
    #define QTBOX_H

    #include <QtWidgets>

    #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 Q_DECL_OVERRIDE;
        virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) Q_DECL_OVERRIDE;
    protected:
        virtual ItemBase *createNew(int size, int x, int y) = 0;
        virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) Q_DECL_OVERRIDE;
        virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event) Q_DECL_OVERRIDE;
        virtual void hoverMoveEvent(QGraphicsSceneHoverEvent *event) Q_DECL_OVERRIDE;
        virtual void mousePressEvent(QGraphicsSceneMouseEvent *event) Q_DECL_OVERRIDE;
        virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) Q_DECL_OVERRIDE;
        virtual void keyPressEvent(QKeyEvent *event) Q_DECL_OVERRIDE;
        virtual void wheelEvent(QGraphicsSceneWheelEvent *event) Q_DECL_OVERRIDE;
        virtual int type() const Q_DECL_OVERRIDE;
        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) Q_DECL_OVERRIDE;
    protected:
        virtual ItemBase *createNew(int size, int x, int y) Q_DECL_OVERRIDE;
    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) Q_DECL_OVERRIDE;
    protected:
        virtual ItemBase *createNew(int size, int x, int y) Q_DECL_OVERRIDE;

        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) Q_DECL_OVERRIDE;
    protected:
        virtual ItemBase *createNew(int size, int x, int y) Q_DECL_OVERRIDE;

        QPixmap m_image;
    };

    #endif