elementpicturefactory.h

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/*
        Copyright 2006-2024 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 ELEMENTPICTUREFACTORY_H
#define ELEMENTPICTUREFACTORY_H
 
#include <QMutex>
#include <QSharedPointer>
#include <QHash>
 
class ElementsLocation;
class QPicture;
class QUuid;
class QDomElement;
class QPainter;
class QGraphicsSimpleTextItem;
 
class ElementPictureFactory
{
        public :
                struct primitives
                {
                        QList<QLineF> m_lines;
                        QList<QRectF> m_rectangles;
                        QList<QRectF> m_circles;
                        QList<QVector<QPointF>> m_polygons;
                        QList<QVector<qreal>> m_arcs;
                        QList<QGraphicsSimpleTextItem*> m_texts;
                };
                
                
                static ElementPictureFactory* instance()
                {
                        static QMutex mutex;
                        if (!m_factory)
                        {
                                mutex.lock();
                                if (!m_factory) {
                                        m_factory = new ElementPictureFactory();        
                                }
                                mutex.unlock();
                        }
                        return m_factory;
                }
                
                static void dropInstance()
                {
                        static QMutex mutex;
                        if (m_factory)
                        {
                                mutex.lock();
                                delete m_factory;
                                m_factory = nullptr;
                                mutex.unlock();
                        }
                }
 
                void getPictures(const ElementsLocation &location, QPicture &picture, QPicture &low_picture);
                QPixmap pixmap(const ElementsLocation &location);
                ElementPictureFactory::primitives getPrimitives(const ElementsLocation &location);
                
        private:
                ElementPictureFactory() {}
                ElementPictureFactory (const ElementPictureFactory &);
                ElementPictureFactory operator= (const ElementPictureFactory &);
                ~ElementPictureFactory();
                
                bool build(const ElementsLocation &location, QPicture *picture=nullptr, QPicture *low_picture=nullptr);
                void parseElement(const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void parseLine   (const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void parseRect   (const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void parseEllipse(const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void parseCircle (const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void parseArc    (const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void parsePolygon(const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void parseText   (const QDomElement &dom, QPainter &painter, primitives &prim) const;
                void setPainterStyle(const QDomElement &dom, QPainter &painter) const;
                
                QHash<QUuid, QPicture> m_pictures_H;
                QHash<QUuid, QPicture> m_low_pictures_H;
                QHash<QUuid, QPixmap> m_pixmap_H;
                QHash<QUuid, primitives> m_primitives_H;
                static ElementPictureFactory* m_factory;
};
 
#endif // ELEMENTPICTUREFACTORY_H