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129 lines
4.6 KiB
C++
129 lines
4.6 KiB
C++
/*
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Copyright 2006-2020 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech 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
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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QElectroTech is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PART_LINE_H
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#define PART_LINE_H
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#include "../qet.h"
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#include "customelementgraphicpart.h"
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class QPropertyUndoCommand;
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class QetGraphicsHandlerItem;
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/**
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This class represents a line primitive which may be used to compose the
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drawing of an electrical element within the element editor. Lines may have
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specific visual ends (e.g. arrows) through the setFirstEndType and
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setSecondEndType methods. Their size can be defined using the
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setFirstEndLength and setSecondEndLength methods. Please note ends are not
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drawn if the required length for their drawing is longer than the line itself.
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In case there is room for a single end only, the first one get priority.
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*/
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class PartLine : public CustomElementGraphicPart
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{
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Q_OBJECT
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Q_PROPERTY(Qet::EndType end1 READ firstEndType WRITE setFirstEndType)
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Q_PROPERTY(Qet::EndType end2 READ secondEndType WRITE setSecondEndType)
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Q_PROPERTY(qreal length1 READ firstEndLength WRITE setFirstEndLength)
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Q_PROPERTY(qreal length2 READ secondEndLength WRITE setSecondEndLength)
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Q_PROPERTY(QLineF line READ line WRITE setLine)
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// constructors, destructor
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public:
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PartLine(QETElementEditor *, QGraphicsItem * = nullptr);
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~PartLine() override;
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private:
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PartLine(const PartLine &);
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signals:
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void lineChanged();
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void firstEndTypeChanged();
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void secondEndTypeChanged();
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void firstEndLengthChanged();
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void secondEndLengthChanged();
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// methods
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public:
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enum { Type = UserType + 1104 };
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/**
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Enable the use of qgraphicsitem_cast to safely cast a QGraphicsItem into a PartLine.
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@return the QGraphicsItem type
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*/
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int type() const override { return Type; }
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void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget * = nullptr) override;
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QString name() const override { return(QObject::tr("ligne", "element part name")); }
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QString xmlName() const override { return(QString("line")); }
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const QDomElement toXml(QDomDocument &) const override;
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void fromXml(const QDomElement &) override;
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virtual QPointF sceneP1() const;
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virtual QPointF sceneP2() const;
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QPainterPath shape() const override;
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QPainterPath shadowShape() const override;
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QRectF boundingRect() const override;
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bool isUseless() const override;
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QRectF sceneGeometricRect() const override;
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void startUserTransformation(const QRectF &) override;
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void handleUserTransformation(const QRectF &, const QRectF &) override;
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static uint requiredLengthForEndType(const Qet::EndType &);
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static QList<QPointF> fourEndPoints(const QPointF &, const QPointF &, const qreal &);
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QLineF line() const;
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void setLine(const QLineF &line);
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Qet::EndType firstEndType() const {return first_end;}
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void setFirstEndType(const Qet::EndType &et);
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Qet::EndType secondEndType() const {return second_end;}
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void setSecondEndType(const Qet::EndType &et);
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qreal firstEndLength() const {return first_length;}
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void setFirstEndLength(const qreal &l);
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qreal secondEndLength() const {return second_length;}
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void setSecondEndLength(const qreal &l);
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protected:
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QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;
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bool sceneEventFilter(QGraphicsItem *watched, QEvent *event) override;
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private:
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void adjusteHandlerPos();
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void handlerMousePressEvent (QetGraphicsHandlerItem *qghi, QGraphicsSceneMouseEvent *event);
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void handlerMouseMoveEvent (QetGraphicsHandlerItem *qghi, QGraphicsSceneMouseEvent *event);
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void handlerMouseReleaseEvent (QetGraphicsHandlerItem *qghi, QGraphicsSceneMouseEvent *event);
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void sceneSelectionChanged ();
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void addHandler();
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void removeHandler();
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QPainterPath path() const;
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QRectF firstEndCircleRect() const;
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QRectF secondEndCircleRect() const;
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/*****************/
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Qet::EndType first_end;
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qreal first_length;
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Qet::EndType second_end;
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qreal second_length;
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QList<QPointF> saved_points_;
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QLineF m_line;
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int m_vector_index = -1;
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QPropertyUndoCommand *m_undo_command;
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QVector<QetGraphicsHandlerItem *> m_handler_vector;
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};
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#endif
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