elementview.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 ELEMENT_VIEW_H
#define ELEMENT_VIEW_H
#include <QGraphicsView>
#include "elementscene.h"

class ElementView : public QGraphicsView {
    Q_OBJECT
    friend class PastePartsCommand;
    
    // constructors, destructor
    public:
    ElementView(ElementScene *, QWidget * = nullptr);
    ~ElementView() override;
    
    private:
    ElementView(const ElementView &);
    
    // methods
    public:
    ElementScene *scene() const;
    void setScene(ElementScene *);
    QRectF viewedSceneRect() const;
    
    protected:
    void mousePressEvent(QMouseEvent *) override;
    void mouseMoveEvent(QMouseEvent *) override;
    void mouseReleaseEvent(QMouseEvent *) override;
    bool gestureEvent(QGestureEvent *event);
    bool event(QEvent *event) override;
    void wheelEvent(QWheelEvent *) override;
    void drawBackground(QPainter *, const QRectF &) override;
    
    private:
    QRectF applyMovement(const QRectF &, const QPointF &);
    
    public slots:
    void setVisualisationMode();
    void setSelectionMode();
    void zoomIn();
    void zoomOut();
    void zoomInSlowly();
    void zoomOutSlowly();
    void zoomFit();
    void zoomReset();
    void adjustSceneRect();
    void resetSceneRect ();
    void cut();
    void copy();
    void paste();
    void pasteInArea();
    
    signals:
    void modeChanged();
    
    private slots:
    void getPasteArea(const QRectF &);
    ElementContent pasteAreaDefined(const QRectF &);
    ElementContent paste(const QPointF &);
    ElementContent paste(const QDomDocument &, const QPointF &);
    ElementContent pasteWithOffset(const QDomDocument &);
    
    // attributes
    private:
    ElementScene *m_scene;
    QString to_paste_in_area_;
    int offset_paste_count_;
    QPointF start_top_left_corner_;
    QPointF reference_view_;
    bool gestures() const;
};
#endif