scaleditem.h

//
// C++ Interface: scaleditem
//
// Description: 
//
//
// Author: Werner Stille <kpl@werner-stille.de>, (C) 2017
//
// Copyright: See COPYING file that comes with this distribution
//
//
#ifndef SCALEDITEM_H
#define SCALEDITEM_H
 
#include <QGraphicsItem>
#include <QPainterPath>
#include <QRectF>
#include "kplitem.h"
 
class Q_DECL_EXPORT ScaledItem : public KplItem, public QGraphicsItem
{
public:
  ScaledItem();
  ScaledItem(const ScaledItem& a);
  ScaledItem(const KConfigGroup* plo, Symbol symbol, unsigned color,
             QGraphicsItem* parent);
  ScaledItem(FillStyle fillStyle, Symbol symbol, unsigned color, double fx,
             double fy, double xOffset, double yOffset, double relSize,
             QGraphicsItem* parent);
  virtual ~ScaledItem();
  inline unsigned color() const { return m_color; };
  static void exponent(double a, int& iExp, double& f);
  inline FillStyle fillStyle() const { return m_fillStyle; };
  inline bool isNormalized(double fx, double fy) const
    { return (m_normX == fx) && (m_normY == fy); };
  static bool limits(double& xMin, double& xMax, const double* values, int n);
  inline void normalize(double fx, double fy)  { m_normX = fx; m_normY = fy; };
  inline double normX() const { return m_normX; };
  inline double normY() const { return m_normY; };
  QPixmap pixmap() const;
  void readPlo(const KConfigGroup* plo, Symbol symbol, unsigned color);
  inline void setColor(unsigned color) { m_color = color; };
  inline void setFillStyle(FillStyle style) { m_fillStyle = style; };
  inline void setNormX(double fx) { m_normX = fx; };
  inline void setNormY(double fy) { m_normY = fy; };
  void setProperties(const QTransform& m);
  void setSize();
  inline void setSymbol(Symbol symbol) { m_symbol = symbol; };
  inline void setXOffset(double xOffset) { m_xOffset = xOffset; };
  inline void setYOffset(double yOffset) { m_yOffset = yOffset; };
  inline Symbol symbol() const { return m_symbol; };
  void update();
  void updateGeometry();
  void writePlo(KConfigGroup* plo, bool visible) const;
  inline double xOffset() const { return m_xOffset; };
  inline double yOffset() const { return m_yOffset; };
 
protected:
  double length(const double* x, const double* y, int n) const;
  void plotArray(QPainter* painter, const double* x, const double* y,
                 int n) const;
  void setProperties();
  FillStyle m_fillStyle;
  Symbol m_symbol;
  unsigned m_color;
  double m_normX, m_normY, m_xOffset, m_yOffset, dydx, myDashOffset;
  mutable QPen m_pen;
  mutable QPainterPath bPath;
  mutable QRectF bRect;
  QRectF symbRect;
  QTransform m_matrix;
};
 
#endif