legenditem.h

/***************************************************************************
                          legenditem.h  -  description
                             -------------------
 
    This file is a part of kpl - a program for graphical presentation of
    data sets and functions.
 
    begin                : Tue Aug 31 1999
    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 LEGENDITEM_H
#define LEGENDITEM_H
 
#include <QGraphicsItem>
#include <QTextDocument>
#include "decoitem.h"
 
class KConfigGroup;

class Q_DECL_EXPORT LegendItem : public DecoItem, public QGraphicsItem
{
public:
  enum {Type = UserType + Legend
  };
  LegendItem(double x0 = 0, double y0 = 0, unsigned colorSymbol = 0,
             unsigned colorText = 0, Symbol symbol = SolidLine,
             double xOff = 1, double yOff = 0, QGraphicsItem* parent = nullptr,
             const QString& text = QString(), bool visible = true,
             double relSize = 1, double symbolSize = 1);
  LegendItem(const LegendItem& a);
  LegendItem(const KConfigGroup* plo, unsigned colorSymbol, unsigned colorText,
             Symbol symbol, double frameWidth,
             QGraphicsItem* parent = nullptr);
  virtual ~LegendItem();
  virtual QRectF boundingRect() const override;
  virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option,
                     QWidget* widget = nullptr) override;
  QPixmap pixmap() const;
  void setProperties(const QTransform& m);
  void setSize();
  inline void setSymbol(Symbol symbol) { m_symbol = symbol; };
  inline void setSymbolSize(double symbolSize) { m_symbolSize = symbolSize; };
  inline void setText(const QString& text) { m_text = text; };
  inline void setTextColor(unsigned color) { m_textColor = color; };
  inline void setTextX(double x) { m_textX = x; };
  inline void setTextY(double y) { m_textY = y; };
  inline Symbol symbol() const { return m_symbol; };
  inline double symbolSize() const { return m_symbolSize; };
  inline QString text() const { return m_text; };
  inline unsigned textColor() const { return m_textColor; };
  inline double textX() const { return m_textX; };
  inline double textY() const { return m_textY; };
  virtual int type() const override { return Type; };
  void update();
  void writePlo(KConfigGroup* plo) const;
 
protected:
  void init();
  virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent* event) override;
  void setProperties();
  QRectF textRect() const;
  Symbol m_symbol;
  unsigned m_textColor;
  double m_textX, m_textY, m_symbolSize;
  QString m_text;
  QTextDocument m_doc;
  QPen m_pen;
  QRectF symbRect;
};
 
#endif