qtbox.h Example File | Qt Widgets 5.6

Qt 5.6 | Qt Widgets | Boxes | qtbox.h Example File

Qt 5.6.2 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
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      **
      ****************************************************************************/

      #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