Qt 5.9 | Qt Widgets | Boxes | qtbox.h Example File

Qt 5.9.9 Reference Documentation

# qtbox.h Example File

graphicsview/boxes/qtbox.h

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the demonstration applications of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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 https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, you may use this file under the terms of the BSD license
      ** as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

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

          QColor m_color;
      };

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

          QPixmap m_image;
      };

      #endif