elementpicturefactory.h

Go to the documentation of this file.

/*
    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 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