partarc.h

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/*
    Copyright 2006-2019 The QElectroTech Team
    This file is part of QElectroTech.
    
    QElectroTech is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.
    
    QElectroTech is distributed in the hope that it will be useful,
    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.
    
    You should have received a copy of the GNU General Public License
    along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PART_ARC_H
#define PART_ARC_H

#include "abstractpartellipse.h"

class QPropertyUndoCommand;
class QetGraphicsHandlerItem;

class PartArc : public AbstractPartEllipse
{
        Q_OBJECT

    public:
        PartArc(QETElementEditor *editor, QGraphicsItem *parent = nullptr);
        ~PartArc() override;
    
    private:
        PartArc(const PartArc &);
        // methods
    public:
        enum { Type = UserType + 1101 };
        int type() const override { return Type; }
        void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget * = nullptr) override;

            //Name and XML
        QString name()    const override { return(QObject::tr("arc", "element part name")); }
        QString xmlName() const override { return(QString("arc")); }
        const QDomElement toXml   (QDomDocument &) const override;
        void              fromXml (const QDomElement &) override;

        QPainterPath shape() const override;
        QPainterPath shadowShape() const override;
        void setRect(const QRectF &rect) override {AbstractPartEllipse::setRect(rect); adjusteHandlerPos();}
        void setStartAngle(const int &start_angle) override {AbstractPartEllipse::setStartAngle(start_angle); adjusteHandlerPos();}
        void setSpanAngle(const int &span_angle) override {AbstractPartEllipse::setSpanAngle(span_angle); adjusteHandlerPos();}

    protected:
        void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
        QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;
        bool sceneEventFilter(QGraphicsItem *watched, QEvent *event) override;

    private:
        void switchResizeMode();
        void adjusteHandlerPos();
        void handlerMousePressEvent   (QetGraphicsHandlerItem *qghi, QGraphicsSceneMouseEvent *event);
        void handlerMouseMoveEvent    (QetGraphicsHandlerItem *qghi, QGraphicsSceneMouseEvent *event);
        void handlerMouseReleaseEvent (QetGraphicsHandlerItem *qghi, QGraphicsSceneMouseEvent *event);
        void sceneSelectionChanged ();
        
        void addHandler();
        void removeHandler();

    private:
        QPropertyUndoCommand *m_undo_command = nullptr;
        QPropertyUndoCommand *m_undo_command2 = nullptr;
        int m_resize_mode = 1,
            m_vector_index = -1;
        QPointF m_span_point;
        QVector<QetGraphicsHandlerItem *> m_handler_vector;
};
#endif