scalebaritem.h

/***************************************************************************
                          scalebaritem.h  -  description
                             -------------------
    begin                : Don Jun 12 2003
    copyright            : (C) 2024 by Werner Stille
    email                : kpl@werner-stille.de
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef SCALEBARITEM_H
#define SCALEBARITEM_H
 
#include <QGraphicsItem>
#include <QTextDocument>
#include "decoitem.h"

class Q_DECL_EXPORT ScaleBarItem : public DecoItem, public QGraphicsItem
{
public:
  enum {Type = UserType + ScaleBar
  };
  ScaleBarItem(double x0 = 0, double y0 = 0, unsigned color = 0,
               QGraphicsItem* parent = nullptr, double length = 1,
               const QString& text = QString(), bool visible = true,
               bool vertical = false, double relSize = 1);
  ScaleBarItem(const ScaleBarItem& a);
  ScaleBarItem(const KConfigGroup* plo, unsigned color = 0,
               QGraphicsItem* parent = nullptr);
  virtual ~ScaleBarItem();
  virtual QRectF boundingRect() const override;
  inline double length() const { return m_length; };
  virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option,
                     QWidget* widget = nullptr) override;
  QPixmap pixmap() const;
  inline void setLength(double length) { m_length = length; };
  void setProperties(const QTransform& m);
  void setSize();
  inline void setText(const QString& text) { m_text = text; };
  inline void setVertical(bool vertical) { m_vertical = vertical; };
  inline QString text() const { return m_text; };
  virtual int type() const override { return Type; };
  void update();
  inline bool vertical() const { return m_vertical; };
  void writePlo(KConfigGroup* plo) const;
 
protected:
  void init();
  virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent* event) override;
  void setProperties();
  QRectF textRect() const;
  bool m_vertical;
  double m_length, l2, wRel;
  QString m_text;
  QTextDocument m_doc;
  QPen m_pen;
};
 
#endif