myGraphicsRectItem.h 2.87 KB
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//    Copyright (C) 2017, ETH Zurich, D-ITET, Angel Romero
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//
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//    This file is part of D-FaLL-System.
//    
//    D-FaLL-System is free software: you can redistribute it and/or modify
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//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
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//    
//    D-FaLL-System is distributed in the hope that it will be useful,
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//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
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//    
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//    You should have received a copy of the GNU General Public License
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//    along with D-FaLL-System.  If not, see <http://www.gnu.org/licenses/>.
//    
//
//    ----------------------------------------------------------------------------------
//    DDDD        FFFFF        L     L           SSSS  Y   Y   SSSS  TTTTT  EEEEE  M   M
//    D   D       F      aaa   L     L          S       Y Y   S        T    E      MM MM
//    D   D  ---  FFFF  a   a  L     L     ---   SSS     Y     SSS     T    EEE    M M M
//    D   D       F     a  aa  L     L              S    Y        S    T    E      M   M
//    DDDD        F      aa a  LLLL  LLLL       SSSS     Y    SSSS     T    EEEEE  M   M
//
//
//    DESCRIPTION:
//    Abstract class to represent our reimplementation of QGraphicsRectItem. Will be the base
//    for table and crazyflie zone.
//
//    ----------------------------------------------------------------------------------

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#ifndef MYGRAPHICSRECTITEM_H
#define MYGRAPHICSRECTITEM_H

#include <QGraphicsRectItem>
#include "cornergrabber.h"

class QGraphicsSceneMouseEvent;
class QPointF;
class QColor;


class myGraphicsRectItem : public QGraphicsRectItem
{
public:
    explicit myGraphicsRectItem(const QRectF & rect, QGraphicsItem * parent = 0);
    void lock();
    void unlock();

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public slots:

signals:

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent) override;
    void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent) override;
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent) override;

    virtual void rectSizeChanged() = 0; // pure virtual function, has to be overridden in derived class

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    QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;

private:
    void setCornerPositions();
    bool anyGrabber();
    int checkCornerGrabbers();
    void createGrabbers();
    bool grabbersAreCreated();
    void deleteGrabbers();

    QPen* pen;
    QBrush* brush;
    QRectF* tmp_rect;
    QGraphicsRectItem* tmp_rect_item;
    QPointF* p1;
    QPointF* p2;

    CornerGrabber* _bottomLeft_corner;
    CornerGrabber* _topLeft_corner;
    CornerGrabber* _topRight_corner;
    CornerGrabber* _bottomRight_corner;

    bool _grabbers_created;
    bool resize_mode;
    bool locked;

};

#endif