/*
	Copyright 2006-2023 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;

/**
	@brief The PartArc class
	This class represents an elliptical arc primitive which may be used to
	compose the drawing of an electrical element within the element editor.
*/
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 };
			/**
				Enable the use of qgraphicsitem_cast to safely cast a QGraphicsItem into a PartArc.
				@return the QGraphicsItem type
			*/
		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();}
		QRectF sceneGeometricRect() const override;

		void addHandler() override;
		void removeHandler() override;

	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);
		
	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
