elementtextitemgroup.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 ELEMENTTEXTITEMGROUP_H
#define ELEMENTTEXTITEMGROUP_H

#include <QGraphicsItemGroup>
#include <QObject>
#include <QDomElement>

class Element;
class DynamicElementTextItem;
class Diagram;
class CrossRefItem;

class ElementTextItemGroup : public QObject, public  QGraphicsItemGroup
{
    Q_OBJECT
    
    Q_PROPERTY(QPointF pos READ pos WRITE setPos)
    Q_PROPERTY(qreal rotation READ rotation WRITE setRotation NOTIFY rotationChanged)
    Q_PROPERTY(int verticalAdjustment READ verticalAdjustment WRITE setVerticalAdjustment NOTIFY verticalAdjustmentChanged)
    Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)
    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
    Q_PROPERTY(bool holdToBottomPage READ holdToBottomPage WRITE setHoldToBottomPage NOTIFY holdToBottomPageChanged)
    Q_PROPERTY(bool frame READ frame WRITE setFrame NOTIFY frameChanged)
    
    public:
    signals:
        void rotationChanged(qreal);
        void verticalAdjustmentChanged(int);
        void alignmentChanged(Qt::Alignment);
        void nameChanged(QString);
        void holdToBottomPageChanged(bool);
        void xChanged();
        void yChanged();
        void frameChanged(bool frame);
    
    public:
        ElementTextItemGroup(const QString &name, Element *parent);
        ~ElementTextItemGroup() override;
        void addToGroup(QGraphicsItem *item);
        void removeFromGroup(QGraphicsItem *item);
        void blockAlignmentUpdate(bool block);
        
        void setAlignment(Qt::Alignment alignement);
        Qt::Alignment alignment() const;
        void updateAlignment();
        int verticalAdjustment() const {return m_vertical_adjustment;}
        void setVerticalAdjustment(int v);
        void setName(QString name);
        QString name() const {return m_name;}
        void setHoldToBottomPage(bool hold);
        bool holdToBottomPage() const {return m_hold_to_bottom_of_page;}
        void setFrame(const bool frame);
        bool frame() const;
        QList<DynamicElementTextItem *> texts() const;
        Diagram *diagram() const;
        Element *parentElement() const;
        
        QDomElement toXml(QDomDocument &dom_document) const;
        void fromXml(QDomElement &dom_element);
        static QString xmlTaggName() {return QString("texts_group");}
        
        void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
        QRectF boundingRect() const override;
        void setRotation(qreal angle);
        void setPos(const QPointF &pos);
        void setPos(qreal x, qreal y);
        
    protected:
        void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
        void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
        void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
        void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;
        void keyPressEvent(QKeyEvent *event) override;
        void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;
        void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;
        
    private:
        void updateXref();
        void adjustSlaveXrefPos();
        void autoPos();

    private:
        Qt::Alignment m_alignment = Qt::AlignJustify;
        QString m_name;
        bool m_first_move = true,
             m_hold_to_bottom_of_page = false,
             m_block_alignment_update = false,
             m_frame = false;
        QPointF m_initial_position;
        int m_vertical_adjustment = 0;
        CrossRefItem *m_Xref_item = nullptr;
        Element *m_parent_element = nullptr;
        QList<QMetaObject::Connection> m_update_slave_Xref_connection;
        QGraphicsTextItem *m_slave_Xref_item = nullptr;
        QMetaObject::Connection m_XrefChanged_timer,
                                m_linked_changed_timer;
};

#endif // ELEMENTTEXTITEMGROUP_H