toys/qdataanalyzer/source/CustomPlot/qcustomplot.h

/***************************************************************************
**                                                                        **
**  QCustomPlot, an easy to use, modern plotting widget for Qt            **
**  Copyright (C) 2011-2015 Emanuel Eichhammer                            **
**                                                                        **
**  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 3 of the License, or     **
**  (at your option) any later version.                                   **
**                                                                        **
**  This program 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 this program.  If not, see http://www.gnu.org/licenses/.   **
**                                                                        **
****************************************************************************
**           Author: Emanuel Eichhammer                                   **
**  Website/Contact: http://www.qcustomplot.com/                          **
**             Date: 22.12.15                                             **
**          Version: 1.3.2                                                **
****************************************************************************/

#ifndef QCUSTOMPLOT_H
#define QCUSTOMPLOT_H

#include <qmath.h>
#include <QCache>
#include <QDateTime>
#include <QDebug>
#include <QFlags>
#include <QMargins>
#include <QMouseEvent>
#include <QMultiMap>
#include <QObject>
#include <QPaintEvent>
#include <QPainter>
#include <QPixmap>
#include <QPointer>
#include <QStack>
#include <QString>
#include <QVector2D>
#include <QVector>
#include <QWidget>
#include <limits>
/*
#include<QList>
#include "XxwTracer.h"
*/
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
#include <qnumeric.h>
#include <QPrintEngine>
#include <QPrinter>
#else
#include <QtNumeric>
#include <QtPrintSupport/QtPrintSupport>
#endif

class QCPPainter;
class QCustomPlot;
class QCPLayerable;
class QCPLayoutElement;
class QCPLayout;
class QCPAxis;
class QCPAxisRect;
class QCPAxisPainterPrivate;
class QCPAbstractPlottable;
class QCPGraph;
class QCPAbstractItem;
class QCPItemPosition;
class QCPLayer;
class QCPPlotTitle;
class QCPLegend;
class QCPAbstractLegendItem;
class QCPColorMap;
class QCPColorScale;
class QCPBars;

/*! \file */

// decl definitions for shared library compilation/usage:
#if defined(QCUSTOMPLOT_COMPILE_LIBRARY)
#define QCP_LIB_DECL Q_DECL_EXPORT
#elif defined(QCUSTOMPLOT_USE_LIBRARY)
#define QCP_LIB_DECL Q_DECL_IMPORT
#else
#define QCP_LIB_DECL
#endif

/*!
  The QCP Namespace contains general enums and QFlags used throughout the QCustomPlot library
*/
namespace QCP {
/*!
  Defines the sides of a rectangular entity to which margins can be applied.

  \see QCPLayoutElement::setAutoMargins, QCPAxisRect::setAutoMargins
*/
enum MarginSide {
    msLeft = 0x01 ///< <tt>0x01</tt> left margin
    ,
    msRight = 0x02 ///< <tt>0x02</tt> right margin
    ,
    msTop = 0x04 ///< <tt>0x04</tt> top margin
    ,
    msBottom = 0x08 ///< <tt>0x08</tt> bottom margin
    ,
    msAll = 0xFF ///< <tt>0xFF</tt> all margins
    ,
    msNone = 0x00 ///< <tt>0x00</tt> no margin
};
Q_DECLARE_FLAGS(MarginSides, MarginSide)

/*!
  Defines what objects of a plot can be forcibly drawn antialiased/not antialiased. If an object is
  neither forcibly drawn antialiased nor forcibly drawn not antialiased, it is up to the respective
  element how it is drawn. Typically it provides a \a setAntialiased function for this.

  \c AntialiasedElements is a flag of or-combined elements of this enum type.

  \see QCustomPlot::setAntialiasedElements, QCustomPlot::setNotAntialiasedElements
*/
enum AntialiasedElement {
    aeAxes = 0x0001 ///< <tt>0x0001</tt> Axis base line and tick marks
    ,
    aeGrid = 0x0002 ///< <tt>0x0002</tt> Grid lines
    ,
    aeSubGrid = 0x0004 ///< <tt>0x0004</tt> Sub grid lines
    ,
    aeLegend = 0x0008 ///< <tt>0x0008</tt> Legend box
    ,
    aeLegendItems = 0x0010 ///< <tt>0x0010</tt> Legend items
    ,
    aePlottables = 0x0020 ///< <tt>0x0020</tt> Main lines of plottables (excluding error bars, see
                          ///< element \ref aeErrorBars)
    ,
    aeItems = 0x0040 ///< <tt>0x0040</tt> Main lines of items
    ,
    aeScatters = 0x0080 ///< <tt>0x0080</tt> Scatter symbols of plottables (excluding scatter
                        ///< symbols of type ssPixmap)
    ,
    aeErrorBars = 0x0100 ///< <tt>0x0100</tt> Error bars
    ,
    aeFills = 0x0200 ///< <tt>0x0200</tt> Borders of fills (e.g. under or between graphs)
    ,
    aeZeroLine = 0x0400 ///< <tt>0x0400</tt> Zero-lines, see \ref QCPGrid::setZeroLinePen
    ,
    aeAll = 0xFFFF ///< <tt>0xFFFF</tt> All elements
    ,
    aeNone = 0x0000 ///< <tt>0x0000</tt> No elements
};
Q_DECLARE_FLAGS(AntialiasedElements, AntialiasedElement)

/*!
  Defines plotting hints that control various aspects of the quality and speed of plotting.

  \see QCustomPlot::setPlottingHints
*/
enum PlottingHint {
    phNone = 0x000 ///< <tt>0x000</tt> No hints are set
    ,
    phFastPolylines = 0x001 ///< <tt>0x001</tt> Graph/Curve lines are drawn with a faster method.
                            ///< This reduces the quality
                            ///<                especially of the line segment joins. (Only relevant
                            ///<                for solid line pens.)
    ,
    phForceRepaint =
        0x002 ///< <tt>0x002</tt> causes an immediate repaint() instead of a soft update() when
              ///< QCustomPlot::replot() is called with parameter \ref QCustomPlot::rpHint.
              ///<                This is set by default to prevent the plot from freezing on fast
              ///<                consecutive replots (e.g. user drags ranges with mouse).
    ,
    phCacheLabels = 0x004 ///< <tt>0x004</tt> axis (tick) labels will be cached as pixmaps,
                          ///< increasing replot performance.
};
Q_DECLARE_FLAGS(PlottingHints, PlottingHint)

/*!
  Defines the mouse interactions possible with QCustomPlot.

  \c Interactions is a flag of or-combined elements of this enum type.

  \see QCustomPlot::setInteractions
*/
enum Interaction {
    iRangeDrag = 0x001 ///< <tt>0x001</tt> Axis ranges are draggable (see \ref
                       ///< QCPAxisRect::setRangeDrag, \ref QCPAxisRect::setRangeDragAxes)
    ,
    iRangeZoom = 0x002 ///< <tt>0x002</tt> Axis ranges are zoomable with the mouse wheel (see \ref
                       ///< QCPAxisRect::setRangeZoom, \ref QCPAxisRect::setRangeZoomAxes)
    ,
    iMultiSelect =
        0x004 ///< <tt>0x004</tt> The user can select multiple objects by holding the modifier set
              ///< by \ref QCustomPlot::setMultiSelectModifier while clicking
    ,
    iSelectPlottables = 0x008 ///< <tt>0x008</tt> Plottables are selectable (e.g. graphs, curves,
                              ///< bars,... see QCPAbstractPlottable)
    ,
    iSelectAxes = 0x010 ///< <tt>0x010</tt> Axes are selectable (or parts of them, see
                        ///< QCPAxis::setSelectableParts)
    ,
    iSelectLegend = 0x020 ///< <tt>0x020</tt> Legends are selectable (or their child items, see
                          ///< QCPLegend::setSelectableParts)
    ,
    iSelectItems = 0x040 ///< <tt>0x040</tt> Items are selectable (Rectangles, Arrows, Textitems,
                         ///< etc. see \ref QCPAbstractItem)
    ,
    iSelectOther = 0x080 ///< <tt>0x080</tt> All other objects are selectable (e.g. your own derived
                         ///< layerables, the plot title,...)
};
Q_DECLARE_FLAGS(Interactions, Interaction)

/*! \internal

  Returns whether the specified \a value is considered an invalid data value for plottables (i.e.
  is \e nan or \e +/-inf). This function is used to check data validity upon replots, when the
  compiler flag \c QCUSTOMPLOT_CHECK_DATA is set.
*/
inline bool isInvalidData(double value)
{
    return qIsNaN(value) || qIsInf(value);
}

/*! \internal
  \overload

  Checks two arguments instead of one.
*/
inline bool isInvalidData(double value1, double value2)
{
    return isInvalidData(value1) || isInvalidData(value2);
}

/*! \internal

  Sets the specified \a side of \a margins to \a value

  \see getMarginValue
*/
inline void setMarginValue(QMargins& margins, QCP::MarginSide side, int value)
{
    switch (side) {
    case QCP::msLeft:
        margins.setLeft(value);
        break;
    case QCP::msRight:
        margins.setRight(value);
        break;
    case QCP::msTop:
        margins.setTop(value);
        break;
    case QCP::msBottom:
        margins.setBottom(value);
        break;
    case QCP::msAll:
        margins = QMargins(value, value, value, value);
        break;
    default:
        break;
    }
}

/*! \internal

  Returns the value of the specified \a side of \a margins. If \a side is \ref QCP::msNone or
  \ref QCP::msAll, returns 0.

  \see setMarginValue
*/
inline int getMarginValue(const QMargins& margins, QCP::MarginSide side)
{
    switch (side) {
    case QCP::msLeft:
        return margins.left();
    case QCP::msRight:
        return margins.right();
    case QCP::msTop:
        return margins.top();
    case QCP::msBottom:
        return margins.bottom();
    default:
        break;
    }
    return 0;
}

} // end of namespace QCP

Q_DECLARE_OPERATORS_FOR_FLAGS(QCP::AntialiasedElements)
Q_DECLARE_OPERATORS_FOR_FLAGS(QCP::PlottingHints)
Q_DECLARE_OPERATORS_FOR_FLAGS(QCP::MarginSides)
Q_DECLARE_OPERATORS_FOR_FLAGS(QCP::Interactions)

class QCP_LIB_DECL QCPScatterStyle
{
    Q_GADGET
public:
    /*!
      Defines the shape used for scatter points.

      On plottables/items that draw scatters, the sizes of these visualizations (with exception of
      \ref ssDot and \ref ssPixmap) can be controlled with the \ref setSize function. Scatters are
      drawn with the pen and brush specified with \ref setPen and \ref setBrush.
    */
    Q_ENUMS(ScatterShape)
    enum ScatterShape {
        ssNone ///< no scatter symbols are drawn (e.g. in QCPGraph, data only represented with
               ///< lines)
        ,
        ssDot ///< \enumimage{ssDot.png} a single pixel (use \ref ssDisc or \ref ssCircle if you
              ///< want a round shape with a certain radius)
        ,
        ssCross ///< \enumimage{ssCross.png} a cross
        ,
        ssPlus ///< \enumimage{ssPlus.png} a plus
        ,
        ssCircle ///< \enumimage{ssCircle.png} a circle
        ,
        ssDisc ///< \enumimage{ssDisc.png} a circle which is filled with the pen's color (not the
               ///< brush as with ssCircle)
        ,
        ssSquare ///< \enumimage{ssSquare.png} a square
        ,
        ssDiamond ///< \enumimage{ssDiamond.png} a diamond
        ,
        ssStar ///< \enumimage{ssStar.png} a star with eight arms, i.e. a combination of cross and
               ///< plus
        ,
        ssTriangle ///< \enumimage{ssTriangle.png} an equilateral triangle, standing on baseline
        ,
        ssTriangleInverted ///< \enumimage{ssTriangleInverted.png} an equilateral triangle, standing
                           ///< on corner
        ,
        ssCrossSquare ///< \enumimage{ssCrossSquare.png} a square with a cross inside
        ,
        ssPlusSquare ///< \enumimage{ssPlusSquare.png} a square with a plus inside
        ,
        ssCrossCircle ///< \enumimage{ssCrossCircle.png} a circle with a cross inside
        ,
        ssPlusCircle ///< \enumimage{ssPlusCircle.png} a circle with a plus inside
        ,
        ssPeace ///< \enumimage{ssPeace.png} a circle, with one vertical and two downward diagonal
                ///< lines
        ,
        ssPixmap ///< a custom pixmap specified by \ref setPixmap, centered on the data point
                 ///< coordinates
        ,
        ssCustom ///< custom painter operations are performed per scatter (As QPainterPath, see \ref
                 ///< setCustomPath)
    };

    QCPScatterStyle();
    QCPScatterStyle(ScatterShape shape, double size = 6);
    QCPScatterStyle(ScatterShape shape, const QColor& color, double size);
    QCPScatterStyle(ScatterShape shape, const QColor& color, const QColor& fill, double size);
    QCPScatterStyle(ScatterShape shape, const QPen& pen, const QBrush& brush, double size);
    QCPScatterStyle(const QPixmap& pixmap);
    QCPScatterStyle(const QPainterPath& customPath, const QPen& pen,
                    const QBrush& brush = Qt::NoBrush, double size = 6);

    // getters:
    double size() const
    {
        return mSize;
    }
    ScatterShape shape() const
    {
        return mShape;
    }
    QPen pen() const
    {
        return mPen;
    }
    QBrush brush() const
    {
        return mBrush;
    }
    QPixmap pixmap() const
    {
        return mPixmap;
    }
    QPainterPath customPath() const
    {
        return mCustomPath;
    }

    // setters:
    void setSize(double size);
    void setShape(ScatterShape shape);
    void setPen(const QPen& pen);
    void setBrush(const QBrush& brush);
    void setPixmap(const QPixmap& pixmap);
    void setCustomPath(const QPainterPath& customPath);

    // non-property methods:
    bool isNone() const
    {
        return mShape == ssNone;
    }
    bool isPenDefined() const
    {
        return mPenDefined;
    }
    void applyTo(QCPPainter* painter, const QPen& defaultPen) const;
    void drawShape(QCPPainter* painter, QPointF pos) const;
    void drawShape(QCPPainter* painter, double x, double y) const;

protected:
    // property members:
    double       mSize;
    ScatterShape mShape;
    QPen         mPen;
    QBrush       mBrush;
    QPixmap      mPixmap;
    QPainterPath mCustomPath;

    // non-property members:
    bool mPenDefined;
};
Q_DECLARE_TYPEINFO(QCPScatterStyle, Q_MOVABLE_TYPE);

class QCP_LIB_DECL QCPPainter : public QPainter
{
    Q_GADGET
public:
    /*!
      Defines special modes the painter can operate in. They disable or enable certain subsets of
      features/fixes/workarounds, depending on whether they are wanted on the respective output
      device.
    */
    enum PainterMode {
        pmDefault = 0x00 ///< <tt>0x00</tt> Default mode for painting on screen devices
        ,
        pmVectorized = 0x01 ///< <tt>0x01</tt> Mode for vectorized painting (e.g. PDF export). For
                            ///< example, this prevents some antialiasing fixes.
        ,
        pmNoCaching = 0x02 ///< <tt>0x02</tt> Mode for all sorts of exports (e.g. PNG, PDF,...). For
                           ///< example, this prevents using cached pixmap labels
        ,
        pmNonCosmetic = 0x04 ///< <tt>0x04</tt> Turns pen widths 0 to 1, i.e. disables cosmetic
                             ///< pens. (A cosmetic pen is always drawn with width 1 pixel in the
                             ///< vector image/pdf viewer, independent of zoom.)
    };
    Q_FLAGS(PainterMode PainterModes)
    Q_DECLARE_FLAGS(PainterModes, PainterMode)

    QCPPainter();
    QCPPainter(QPaintDevice* device);
    ~QCPPainter();

    // getters:
    bool antialiasing() const
    {
        return testRenderHint(QPainter::Antialiasing);
    }
    PainterModes modes() const
    {
        return mModes;
    }

    // setters:
    void setAntialiasing(bool enabled);
    void setMode(PainterMode mode, bool enabled = true);
    void setModes(PainterModes modes);

    // methods hiding non-virtual base class functions (QPainter bug workarounds):
    bool begin(QPaintDevice* device);
    void setPen(const QPen& pen);
    void setPen(const QColor& color);
    void setPen(Qt::PenStyle penStyle);
    void drawLine(const QLineF& line);
    void drawLine(const QPointF& p1, const QPointF& p2)
    {
        drawLine(QLineF(p1, p2));
    }
    void save();
    void restore();

    // non-virtual methods:
    void makeNonCosmetic();

protected:
    // property members:
    PainterModes mModes;
    bool         mIsAntialiasing;

    // non-property members:
    QStack<bool> mAntialiasingStack;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QCPPainter::PainterModes)

class QCP_LIB_DECL QCPLayer : public QObject
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QCustomPlot* parentPlot READ parentPlot)
    Q_PROPERTY(QString name READ name)
    Q_PROPERTY(int index READ index)
    Q_PROPERTY(QList<QCPLayerable*> children READ children)
    Q_PROPERTY(bool visible READ visible WRITE setVisible)
    /// \endcond
public:
    QCPLayer(QCustomPlot* parentPlot, const QString& layerName);
    ~QCPLayer();

    // getters:
    QCustomPlot* parentPlot() const
    {
        return mParentPlot;
    }
    QString name() const
    {
        return mName;
    }
    int index() const
    {
        return mIndex;
    }
    QList<QCPLayerable*> children() const
    {
        return mChildren;
    }
    bool visible() const
    {
        return mVisible;
    }

    // setters:
    void setVisible(bool visible);

protected:
    // property members:
    QCustomPlot*         mParentPlot;
    QString              mName;
    int                  mIndex;
    QList<QCPLayerable*> mChildren;
    bool                 mVisible;

    // non-virtual methods:
    void addChild(QCPLayerable* layerable, bool prepend);
    void removeChild(QCPLayerable* layerable);

private:
    Q_DISABLE_COPY(QCPLayer)

    friend class QCustomPlot;
    friend class QCPLayerable;
};

class QCP_LIB_DECL QCPLayerable : public QObject
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(bool visible READ visible WRITE setVisible)
    Q_PROPERTY(QCustomPlot* parentPlot READ parentPlot)
    Q_PROPERTY(QCPLayerable* parentLayerable READ parentLayerable)
    Q_PROPERTY(QCPLayer* layer READ layer WRITE setLayer NOTIFY layerChanged)
    Q_PROPERTY(bool antialiased READ antialiased WRITE setAntialiased)
    /// \endcond
public:
    QCPLayerable(QCustomPlot* plot, QString targetLayer = QString(),
                 QCPLayerable* parentLayerable = 0);
    ~QCPLayerable();

    // getters:
    bool visible() const
    {
        return mVisible;
    }
    QCustomPlot* parentPlot() const
    {
        return mParentPlot;
    }
    QCPLayerable* parentLayerable() const
    {
        return mParentLayerable.data();
    }
    QCPLayer* layer() const
    {
        return mLayer;
    }
    bool antialiased() const
    {
        return mAntialiased;
    }

    // setters:
    void        setVisible(bool on);
    Q_SLOT bool setLayer(QCPLayer* layer);
    bool        setLayer(const QString& layerName);
    void        setAntialiased(bool enabled);

    // introduced virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    // non-property methods:
    bool realVisibility() const;

signals:
    void layerChanged(QCPLayer* newLayer);

protected:
    // property members:
    bool                   mVisible;
    QCustomPlot*           mParentPlot;
    QPointer<QCPLayerable> mParentLayerable;
    QCPLayer*              mLayer;
    bool                   mAntialiased;

    // introduced virtual methods:
    virtual void             parentPlotInitialized(QCustomPlot* parentPlot);
    virtual QCP::Interaction selectionCategory() const;
    virtual QRect            clipRect() const;
    virtual void             applyDefaultAntialiasingHint(QCPPainter* painter) const = 0;
    virtual void             draw(QCPPainter* painter)                               = 0;
    // events:
    virtual void             selectEvent(QMouseEvent* event, bool additive, const QVariant& details,
                                         bool* selectionStateChanged);
    virtual void             deselectEvent(bool* selectionStateChanged);

    // non-property methods:
    void initializeParentPlot(QCustomPlot* parentPlot);
    void setParentLayerable(QCPLayerable* parentLayerable);
    bool moveToLayer(QCPLayer* layer, bool prepend);
    void applyAntialiasingHint(QCPPainter* painter, bool localAntialiased,
                               QCP::AntialiasedElement overrideElement) const;

private:
    Q_DISABLE_COPY(QCPLayerable)

    friend class QCustomPlot;
    friend class QCPAxisRect;
};

class QCP_LIB_DECL QCPRange
{
public:
    double lower, upper;

    QCPRange();
    QCPRange(double lower, double upper);

    bool operator==(const QCPRange& other) const
    {
        return lower == other.lower && upper == other.upper;
    }
    bool operator!=(const QCPRange& other) const
    {
        return !(*this == other);
    }

    QCPRange& operator+=(const double& value)
    {
        lower += value;
        upper += value;
        return *this;
    }
    QCPRange& operator-=(const double& value)
    {
        lower -= value;
        upper -= value;
        return *this;
    }
    QCPRange& operator*=(const double& value)
    {
        lower *= value;
        upper *= value;
        return *this;
    }
    QCPRange& operator/=(const double& value)
    {
        lower /= value;
        upper /= value;
        return *this;
    }
    friend inline const QCPRange operator+(const QCPRange&, double);
    friend inline const QCPRange operator+(double, const QCPRange&);
    friend inline const QCPRange operator-(const QCPRange& range, double value);
    friend inline const QCPRange operator*(const QCPRange& range, double value);
    friend inline const QCPRange operator*(double value, const QCPRange& range);
    friend inline const QCPRange operator/(const QCPRange& range, double value);

    double   size() const;
    double   center() const;
    void     normalize();
    void     expand(const QCPRange& otherRange);
    QCPRange expanded(const QCPRange& otherRange) const;
    QCPRange sanitizedForLogScale() const;
    QCPRange sanitizedForLinScale() const;
    bool     contains(double value) const;

    static bool         validRange(double lower, double upper);
    static bool         validRange(const QCPRange& range);
    static const double minRange; // 1e-280;
    static const double maxRange; // 1e280;
};
Q_DECLARE_TYPEINFO(QCPRange, Q_MOVABLE_TYPE);

/* documentation of inline functions */

/*! \fn QCPRange &QCPRange::operator+=(const double& value)

  Adds \a value to both boundaries of the range.
*/

/*! \fn QCPRange &QCPRange::operator-=(const double& value)

  Subtracts \a value from both boundaries of the range.
*/

/*! \fn QCPRange &QCPRange::operator*=(const double& value)

  Multiplies both boundaries of the range by \a value.
*/

/*! \fn QCPRange &QCPRange::operator/=(const double& value)

  Divides both boundaries of the range by \a value.
*/

/* end documentation of inline functions */

/*!
  Adds \a value to both boundaries of the range.
*/
inline const QCPRange operator+(const QCPRange& range, double value)
{
    QCPRange result(range);
    result += value;
    return result;
}

/*!
  Adds \a value to both boundaries of the range.
*/
inline const QCPRange operator+(double value, const QCPRange& range)
{
    QCPRange result(range);
    result += value;
    return result;
}

/*!
  Subtracts \a value from both boundaries of the range.
*/
inline const QCPRange operator-(const QCPRange& range, double value)
{
    QCPRange result(range);
    result -= value;
    return result;
}

/*!
  Multiplies both boundaries of the range by \a value.
*/
inline const QCPRange operator*(const QCPRange& range, double value)
{
    QCPRange result(range);
    result *= value;
    return result;
}

/*!
  Multiplies both boundaries of the range by \a value.
*/
inline const QCPRange operator*(double value, const QCPRange& range)
{
    QCPRange result(range);
    result *= value;
    return result;
}

/*!
  Divides both boundaries of the range by \a value.
*/
inline const QCPRange operator/(const QCPRange& range, double value)
{
    QCPRange result(range);
    result /= value;
    return result;
}

class QCP_LIB_DECL QCPMarginGroup : public QObject
{
    Q_OBJECT
public:
    QCPMarginGroup(QCustomPlot* parentPlot);
    ~QCPMarginGroup();

    // non-virtual methods:
    QList<QCPLayoutElement*> elements(QCP::MarginSide side) const
    {
        return mChildren.value(side);
    }
    bool isEmpty() const;
    void clear();

protected:
    // non-property members:
    QCustomPlot*                                     mParentPlot;
    QHash<QCP::MarginSide, QList<QCPLayoutElement*>> mChildren;

    // non-virtual methods:
    int  commonMargin(QCP::MarginSide side) const;
    void addChild(QCP::MarginSide side, QCPLayoutElement* element);
    void removeChild(QCP::MarginSide side, QCPLayoutElement* element);

private:
    Q_DISABLE_COPY(QCPMarginGroup)

    friend class QCPLayoutElement;
};

class QCP_LIB_DECL QCPLayoutElement : public QCPLayerable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QCPLayout* layout READ layout)
    Q_PROPERTY(QRect rect READ rect)
    Q_PROPERTY(QRect outerRect READ outerRect WRITE setOuterRect)
    Q_PROPERTY(QMargins margins READ margins WRITE setMargins)
    Q_PROPERTY(QMargins minimumMargins READ minimumMargins WRITE setMinimumMargins)
    Q_PROPERTY(QSize minimumSize READ minimumSize WRITE setMinimumSize)
    Q_PROPERTY(QSize maximumSize READ maximumSize WRITE setMaximumSize)
    /// \endcond
public:
    /*!
      Defines the phases of the update process, that happens just before a replot. At each phase,
      \ref update is called with the according UpdatePhase value.
    */
    enum UpdatePhase {
        upPreparation ///< Phase used for any type of preparation that needs to be done before
                      ///< margin calculation and layout
        ,
        upMargins ///< Phase in which the margins are calculated and set
        ,
        upLayout ///< Final phase in which the layout system places the rects of the elements
    };
    Q_ENUMS(UpdatePhase)

    explicit QCPLayoutElement(QCustomPlot* parentPlot = 0);
    virtual ~QCPLayoutElement();

    // getters:
    QCPLayout* layout() const
    {
        return mParentLayout;
    }
    QRect rect() const
    {
        return mRect;
    }
    QRect outerRect() const
    {
        return mOuterRect;
    }
    QMargins margins() const
    {
        return mMargins;
    }
    QMargins minimumMargins() const
    {
        return mMinimumMargins;
    }
    QCP::MarginSides autoMargins() const
    {
        return mAutoMargins;
    }
    QSize minimumSize() const
    {
        return mMinimumSize;
    }
    QSize maximumSize() const
    {
        return mMaximumSize;
    }
    QCPMarginGroup* marginGroup(QCP::MarginSide side) const
    {
        return mMarginGroups.value(side, (QCPMarginGroup*)0);
    }
    QHash<QCP::MarginSide, QCPMarginGroup*> marginGroups() const
    {
        return mMarginGroups;
    }

    // setters:
    void setOuterRect(const QRect& rect);
    void setMargins(const QMargins& margins);
    void setMinimumMargins(const QMargins& margins);
    void setAutoMargins(QCP::MarginSides sides);
    void setMinimumSize(const QSize& size);
    void setMinimumSize(int width, int height);
    void setMaximumSize(const QSize& size);
    void setMaximumSize(int width, int height);
    void setMarginGroup(QCP::MarginSides sides, QCPMarginGroup* group);

    // introduced virtual methods:
    virtual void                     update(UpdatePhase phase);
    virtual QSize                    minimumSizeHint() const;
    virtual QSize                    maximumSizeHint() const;
    virtual QList<QCPLayoutElement*> elements(bool recursive) const;

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

protected:
    // property members:
    QCPLayout*                              mParentLayout;
    QSize                                   mMinimumSize, mMaximumSize;
    QRect                                   mRect, mOuterRect;
    QMargins                                mMargins, mMinimumMargins;
    QCP::MarginSides                        mAutoMargins;
    QHash<QCP::MarginSide, QCPMarginGroup*> mMarginGroups;

    // introduced virtual methods:
    virtual int  calculateAutoMargin(QCP::MarginSide side);
    // events:
    virtual void mousePressEvent(QMouseEvent* event)
    {
        Q_UNUSED(event)
    }
    virtual void mouseMoveEvent(QMouseEvent* event)
    {
        Q_UNUSED(event)
    }
    virtual void mouseReleaseEvent(QMouseEvent* event)
    {
        Q_UNUSED(event)
    }
    virtual void mouseDoubleClickEvent(QMouseEvent* event)
    {
        Q_UNUSED(event)
    }
    virtual void wheelEvent(QWheelEvent* event)
    {
        Q_UNUSED(event)
    }

    // reimplemented virtual methods:
    virtual void applyDefaultAntialiasingHint(QCPPainter* painter) const
    {
        Q_UNUSED(painter)
    }
    virtual void draw(QCPPainter* painter)
    {
        Q_UNUSED(painter)
    }
    virtual void parentPlotInitialized(QCustomPlot* parentPlot);

private:
    Q_DISABLE_COPY(QCPLayoutElement)

    friend class QCustomPlot;
    friend class QCPLayout;
    friend class QCPMarginGroup;
};

class QCP_LIB_DECL QCPLayout : public QCPLayoutElement
{
    Q_OBJECT
public:
    explicit QCPLayout();

    // reimplemented virtual methods:
    virtual void                     update(UpdatePhase phase);
    virtual QList<QCPLayoutElement*> elements(bool recursive) const;

    // introduced virtual methods:
    virtual int               elementCount() const            = 0;
    virtual QCPLayoutElement* elementAt(int index) const      = 0;
    virtual QCPLayoutElement* takeAt(int index)               = 0;
    virtual bool              take(QCPLayoutElement* element) = 0;
    virtual void              simplify();

    // non-virtual methods:
    bool removeAt(int index);
    bool remove(QCPLayoutElement* element);
    void clear();

protected:
    // introduced virtual methods:
    virtual void updateLayout();

    // non-virtual methods:
    void         sizeConstraintsChanged() const;
    void         adoptElement(QCPLayoutElement* el);
    void         releaseElement(QCPLayoutElement* el);
    QVector<int> getSectionSizes(QVector<int> maxSizes, QVector<int> minSizes,
                                 QVector<double> stretchFactors, int totalSize) const;

private:
    Q_DISABLE_COPY(QCPLayout)
    friend class QCPLayoutElement;
};

class QCP_LIB_DECL QCPLayoutGrid : public QCPLayout
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(int rowCount READ rowCount)
    Q_PROPERTY(int columnCount READ columnCount)
    Q_PROPERTY(
        QList<double> columnStretchFactors READ columnStretchFactors WRITE setColumnStretchFactors)
    Q_PROPERTY(QList<double> rowStretchFactors READ rowStretchFactors WRITE setRowStretchFactors)
    Q_PROPERTY(int columnSpacing READ columnSpacing WRITE setColumnSpacing)
    Q_PROPERTY(int rowSpacing READ rowSpacing WRITE setRowSpacing)
    /// \endcond
public:
    explicit QCPLayoutGrid();
    virtual ~QCPLayoutGrid();

    // getters:
    int           rowCount() const;
    int           columnCount() const;
    QList<double> columnStretchFactors() const
    {
        return mColumnStretchFactors;
    }
    QList<double> rowStretchFactors() const
    {
        return mRowStretchFactors;
    }
    int columnSpacing() const
    {
        return mColumnSpacing;
    }
    int rowSpacing() const
    {
        return mRowSpacing;
    }

    // setters:
    void setColumnStretchFactor(int column, double factor);
    void setColumnStretchFactors(const QList<double>& factors);
    void setRowStretchFactor(int row, double factor);
    void setRowStretchFactors(const QList<double>& factors);
    void setColumnSpacing(int pixels);
    void setRowSpacing(int pixels);

    // reimplemented virtual methods:
    virtual void                     updateLayout();
    virtual int                      elementCount() const;
    virtual QCPLayoutElement*        elementAt(int index) const;
    virtual QCPLayoutElement*        takeAt(int index);
    virtual bool                     take(QCPLayoutElement* element);
    virtual QList<QCPLayoutElement*> elements(bool recursive) const;
    virtual void                     simplify();
    virtual QSize                    minimumSizeHint() const;
    virtual QSize                    maximumSizeHint() const;

    // non-virtual methods:
    QCPLayoutElement* element(int row, int column) const;
    bool              addElement(int row, int column, QCPLayoutElement* element);
    bool              hasElement(int row, int column);
    void              expandTo(int newRowCount, int newColumnCount);
    void              insertRow(int newIndex);
    void              insertColumn(int newIndex);

protected:
    // property members:
    QList<QList<QCPLayoutElement*>> mElements;
    QList<double>                   mColumnStretchFactors;
    QList<double>                   mRowStretchFactors;
    int                             mColumnSpacing, mRowSpacing;

    // non-virtual methods:
    void getMinimumRowColSizes(QVector<int>* minColWidths, QVector<int>* minRowHeights) const;
    void getMaximumRowColSizes(QVector<int>* maxColWidths, QVector<int>* maxRowHeights) const;

private:
    Q_DISABLE_COPY(QCPLayoutGrid)
};

class QCP_LIB_DECL QCPLayoutInset : public QCPLayout
{
    Q_OBJECT
public:
    /*!
      Defines how the placement and sizing is handled for a certain element in a QCPLayoutInset.
    */
    enum InsetPlacement {
        ipFree ///< The element may be positioned/sized arbitrarily, see \ref setInsetRect
        ,
        ipBorderAligned ///< The element is aligned to one of the layout sides, see \ref
                        ///< setInsetAlignment
    };

    explicit QCPLayoutInset();
    virtual ~QCPLayoutInset();

    // getters:
    InsetPlacement insetPlacement(int index) const;
    Qt::Alignment  insetAlignment(int index) const;
    QRectF         insetRect(int index) const;

    // setters:
    void setInsetPlacement(int index, InsetPlacement placement);
    void setInsetAlignment(int index, Qt::Alignment alignment);
    void setInsetRect(int index, const QRectF& rect);

    // reimplemented virtual methods:
    virtual void              updateLayout();
    virtual int               elementCount() const;
    virtual QCPLayoutElement* elementAt(int index) const;
    virtual QCPLayoutElement* takeAt(int index);
    virtual bool              take(QCPLayoutElement* element);
    virtual void              simplify()
    {}
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    // non-virtual methods:
    void addElement(QCPLayoutElement* element, Qt::Alignment alignment);
    void addElement(QCPLayoutElement* element, const QRectF& rect);

protected:
    // property members:
    QList<QCPLayoutElement*> mElements;
    QList<InsetPlacement>    mInsetPlacement;
    QList<Qt::Alignment>     mInsetAlignment;
    QList<QRectF>            mInsetRect;

private:
    Q_DISABLE_COPY(QCPLayoutInset)
};

class QCP_LIB_DECL QCPLineEnding
{
    Q_GADGET
public:
    /*!
      Defines the type of ending decoration for line-like items, e.g. an arrow.

      \image html QCPLineEnding.png

      The width and length of these decorations can be controlled with the functions \ref setWidth
      and \ref setLength. Some decorations like \ref esDisc, \ref esSquare, \ref esDiamond and \ref
      esBar only support a width, the length property is ignored.

      \see QCPItemLine::setHead, QCPItemLine::setTail, QCPItemCurve::setHead, QCPItemCurve::setTail,
      QCPAxis::setLowerEnding, QCPAxis::setUpperEnding
    */
    Q_ENUMS(EndingStyle)
    enum EndingStyle {
        esNone ///< No ending decoration
        ,
        esFlatArrow ///< A filled arrow head with a straight/flat back (a triangle)
        ,
        esSpikeArrow ///< A filled arrow head with an indented back
        ,
        esLineArrow ///< A non-filled arrow head with open back
        ,
        esDisc ///< A filled circle
        ,
        esSquare ///< A filled square
        ,
        esDiamond ///< A filled diamond (45° rotated square)
        ,
        esBar ///< A bar perpendicular to the line
        ,
        esHalfBar ///< A bar perpendicular to the line, pointing out to only one side (to which side
                  ///< can be changed with \ref setInverted)
        ,
        esSkewedBar ///< A bar that is skewed (skew controllable via \ref setLength)
    };

    QCPLineEnding();
    QCPLineEnding(EndingStyle style, double width = 8, double length = 10, bool inverted = false);

    // getters:
    EndingStyle style() const
    {
        return mStyle;
    }
    double width() const
    {
        return mWidth;
    }
    double length() const
    {
        return mLength;
    }
    bool inverted() const
    {
        return mInverted;
    }

    // setters:
    void setStyle(EndingStyle style);
    void setWidth(double width);
    void setLength(double length);
    void setInverted(bool inverted);

    // non-property methods:
    double boundingDistance() const;
    double realLength() const;
    void   draw(QCPPainter* painter, const QVector2D& pos, const QVector2D& dir) const;
    void   draw(QCPPainter* painter, const QVector2D& pos, double angle) const;

protected:
    // property members:
    EndingStyle mStyle;
    double      mWidth, mLength;
    bool        mInverted;
};
Q_DECLARE_TYPEINFO(QCPLineEnding, Q_MOVABLE_TYPE);

class QCP_LIB_DECL QCPGrid : public QCPLayerable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(bool subGridVisible READ subGridVisible WRITE setSubGridVisible)
    Q_PROPERTY(bool antialiasedSubGrid READ antialiasedSubGrid WRITE setAntialiasedSubGrid)
    Q_PROPERTY(bool antialiasedZeroLine READ antialiasedZeroLine WRITE setAntialiasedZeroLine)
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen subGridPen READ subGridPen WRITE setSubGridPen)
    Q_PROPERTY(QPen zeroLinePen READ zeroLinePen WRITE setZeroLinePen)
    /// \endcond
public:
    QCPGrid(QCPAxis* parentAxis);

    // getters:
    bool subGridVisible() const
    {
        return mSubGridVisible;
    }
    bool antialiasedSubGrid() const
    {
        return mAntialiasedSubGrid;
    }
    bool antialiasedZeroLine() const
    {
        return mAntialiasedZeroLine;
    }
    QPen pen() const
    {
        return mPen;
    }
    QPen subGridPen() const
    {
        return mSubGridPen;
    }
    QPen zeroLinePen() const
    {
        return mZeroLinePen;
    }

    // setters:
    void setSubGridVisible(bool visible);
    void setAntialiasedSubGrid(bool enabled);
    void setAntialiasedZeroLine(bool enabled);
    void setPen(const QPen& pen);
    void setSubGridPen(const QPen& pen);
    void setZeroLinePen(const QPen& pen);

protected:
    // property members:
    bool     mSubGridVisible;
    bool     mAntialiasedSubGrid, mAntialiasedZeroLine;
    QPen     mPen, mSubGridPen, mZeroLinePen;
    // non-property members:
    QCPAxis* mParentAxis;

    // reimplemented virtual methods:
    virtual void applyDefaultAntialiasingHint(QCPPainter* painter) const;
    virtual void draw(QCPPainter* painter);

    // non-virtual methods:
    void drawGridLines(QCPPainter* painter) const;
    void drawSubGridLines(QCPPainter* painter) const;

    friend class QCPAxis;
};

class QCP_LIB_DECL QCPAxis : public QCPLayerable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(AxisType axisType READ axisType)
    Q_PROPERTY(QCPAxisRect* axisRect READ axisRect)
    Q_PROPERTY(ScaleType scaleType READ scaleType WRITE setScaleType NOTIFY scaleTypeChanged)
    Q_PROPERTY(double scaleLogBase READ scaleLogBase WRITE setScaleLogBase)
    Q_PROPERTY(QCPRange range READ range WRITE setRange NOTIFY rangeChanged)
    Q_PROPERTY(bool rangeReversed READ rangeReversed WRITE setRangeReversed)
    Q_PROPERTY(bool autoTicks READ autoTicks WRITE setAutoTicks)
    Q_PROPERTY(int autoTickCount READ autoTickCount WRITE setAutoTickCount)
    Q_PROPERTY(bool autoTickLabels READ autoTickLabels WRITE setAutoTickLabels)
    Q_PROPERTY(bool autoTickStep READ autoTickStep WRITE setAutoTickStep)
    Q_PROPERTY(bool autoSubTicks READ autoSubTicks WRITE setAutoSubTicks)
    Q_PROPERTY(bool ticks READ ticks WRITE setTicks)
    Q_PROPERTY(bool tickLabels READ tickLabels WRITE setTickLabels)
    Q_PROPERTY(int tickLabelPadding READ tickLabelPadding WRITE setTickLabelPadding)
    Q_PROPERTY(LabelType tickLabelType READ tickLabelType WRITE setTickLabelType)
    Q_PROPERTY(QFont tickLabelFont READ tickLabelFont WRITE setTickLabelFont)
    Q_PROPERTY(QColor tickLabelColor READ tickLabelColor WRITE setTickLabelColor)
    Q_PROPERTY(double tickLabelRotation READ tickLabelRotation WRITE setTickLabelRotation)
    Q_PROPERTY(LabelSide tickLabelSide READ tickLabelSide WRITE setTickLabelSide)
    Q_PROPERTY(QString dateTimeFormat READ dateTimeFormat WRITE setDateTimeFormat)
    Q_PROPERTY(Qt::TimeSpec dateTimeSpec READ dateTimeSpec WRITE setDateTimeSpec)
    Q_PROPERTY(QString numberFormat READ numberFormat WRITE setNumberFormat)
    Q_PROPERTY(int numberPrecision READ numberPrecision WRITE setNumberPrecision)
    Q_PROPERTY(double tickStep READ tickStep WRITE setTickStep)
    Q_PROPERTY(QVector<double> tickVector READ tickVector WRITE setTickVector)
    Q_PROPERTY(QVector<QString> tickVectorLabels READ tickVectorLabels WRITE setTickVectorLabels)
    Q_PROPERTY(int tickLengthIn READ tickLengthIn WRITE setTickLengthIn)
    Q_PROPERTY(int tickLengthOut READ tickLengthOut WRITE setTickLengthOut)
    Q_PROPERTY(int subTickCount READ subTickCount WRITE setSubTickCount)
    Q_PROPERTY(int subTickLengthIn READ subTickLengthIn WRITE setSubTickLengthIn)
    Q_PROPERTY(int subTickLengthOut READ subTickLengthOut WRITE setSubTickLengthOut)
    Q_PROPERTY(QPen basePen READ basePen WRITE setBasePen)
    Q_PROPERTY(QPen tickPen READ tickPen WRITE setTickPen)
    Q_PROPERTY(QPen subTickPen READ subTickPen WRITE setSubTickPen)
    Q_PROPERTY(QFont labelFont READ labelFont WRITE setLabelFont)
    Q_PROPERTY(QColor labelColor READ labelColor WRITE setLabelColor)
    Q_PROPERTY(QString label READ label WRITE setLabel)
    Q_PROPERTY(int labelPadding READ labelPadding WRITE setLabelPadding)
    Q_PROPERTY(int padding READ padding WRITE setPadding)
    Q_PROPERTY(int offset READ offset WRITE setOffset)
    Q_PROPERTY(SelectableParts selectedParts READ selectedParts WRITE setSelectedParts NOTIFY
                   selectionChanged)
    Q_PROPERTY(SelectableParts selectableParts READ selectableParts WRITE setSelectableParts NOTIFY
                   selectableChanged)
    Q_PROPERTY(
        QFont selectedTickLabelFont READ selectedTickLabelFont WRITE setSelectedTickLabelFont)
    Q_PROPERTY(QFont selectedLabelFont READ selectedLabelFont WRITE setSelectedLabelFont)
    Q_PROPERTY(
        QColor selectedTickLabelColor READ selectedTickLabelColor WRITE setSelectedTickLabelColor)
    Q_PROPERTY(QColor selectedLabelColor READ selectedLabelColor WRITE setSelectedLabelColor)
    Q_PROPERTY(QPen selectedBasePen READ selectedBasePen WRITE setSelectedBasePen)
    Q_PROPERTY(QPen selectedTickPen READ selectedTickPen WRITE setSelectedTickPen)
    Q_PROPERTY(QPen selectedSubTickPen READ selectedSubTickPen WRITE setSelectedSubTickPen)
    Q_PROPERTY(QCPLineEnding lowerEnding READ lowerEnding WRITE setLowerEnding)
    Q_PROPERTY(QCPLineEnding upperEnding READ upperEnding WRITE setUpperEnding)
    Q_PROPERTY(QCPGrid* grid READ grid)
    /// \endcond
public:
    /*!
      Defines at which side of the axis rect the axis will appear. This also affects how the tick
      marks are drawn, on which side the labels are placed etc.
    */
    enum AxisType {
        atLeft = 0x01 ///< <tt>0x01</tt> Axis is vertical and on the left side of the axis rect
        ,
        atRight = 0x02 ///< <tt>0x02</tt> Axis is vertical and on the right side of the axis rect
        ,
        atTop = 0x04 ///< <tt>0x04</tt> Axis is horizontal and on the top side of the axis rect
        ,
        atBottom =
            0x08 ///< <tt>0x08</tt> Axis is horizontal and on the bottom side of the axis rect
    };
    Q_FLAGS(AxisType AxisTypes)
    Q_DECLARE_FLAGS(AxisTypes, AxisType)
    /*!
      When automatic tick label generation is enabled (\ref setAutoTickLabels), defines how the
      coordinate of the tick is interpreted, i.e. translated into a string.

      \see setTickLabelType
    */
    enum LabelType {
        ltNumber ///< Tick coordinate is regarded as normal number and will be displayed as such.
                 ///< (see \ref setNumberFormat)
        ,
        ltDateTime ///< Tick coordinate is regarded as a date/time (seconds since
                   ///< 1970-01-01T00:00:00 UTC) and will be displayed and formatted as such. (for
                   ///< details, see \ref setDateTimeFormat)
    };
    Q_ENUMS(LabelType)
    /*!
      Defines on which side of the axis the tick labels (numbers) shall appear.

      \see setTickLabelSide
    */
    enum LabelSide {
        lsInside ///< Tick labels will be displayed inside the axis rect and clipped to the inner
                 ///< axis rect
        ,
        lsOutside ///< Tick labels will be displayed outside the axis rect
    };
    Q_ENUMS(LabelSide)
    /*!
      Defines the scale of an axis.
      \see setScaleType
    */
    enum ScaleType {
        stLinear ///< Linear scaling
        ,
        stLogarithmic ///< Logarithmic scaling with correspondingly transformed plots and (major)
                      ///< tick marks at every base power (see \ref setScaleLogBase).
    };
    Q_ENUMS(ScaleType)
    /*!
      Defines the selectable parts of an axis.
      \see setSelectableParts, setSelectedParts
    */
    enum SelectablePart {
        spNone = 0 ///< None of the selectable parts
        ,
        spAxis = 0x001 ///< The axis backbone and tick marks
        ,
        spTickLabels = 0x002 ///< Tick labels (numbers) of this axis (as a whole, not individually)
        ,
        spAxisLabel = 0x004 ///< The axis label
    };
    Q_FLAGS(SelectablePart SelectableParts)
    Q_DECLARE_FLAGS(SelectableParts, SelectablePart)

    explicit QCPAxis(QCPAxisRect* parent, AxisType type);
    virtual ~QCPAxis();

    // getters:
    AxisType axisType() const
    {
        return mAxisType;
    }
    QCPAxisRect* axisRect() const
    {
        return mAxisRect;
    }
    ScaleType scaleType() const
    {
        return mScaleType;
    }
    double scaleLogBase() const
    {
        return mScaleLogBase;
    }
    const QCPRange range() const
    {
        return mRange;
    }
    bool rangeReversed() const
    {
        return mRangeReversed;
    }
    bool autoTicks() const
    {
        return mAutoTicks;
    }
    int autoTickCount() const
    {
        return mAutoTickCount;
    }
    bool autoTickLabels() const
    {
        return mAutoTickLabels;
    }
    bool autoTickStep() const
    {
        return mAutoTickStep;
    }
    bool autoSubTicks() const
    {
        return mAutoSubTicks;
    }
    bool ticks() const
    {
        return mTicks;
    }
    bool tickLabels() const
    {
        return mTickLabels;
    }
    int       tickLabelPadding() const;
    LabelType tickLabelType() const
    {
        return mTickLabelType;
    }
    QFont tickLabelFont() const
    {
        return mTickLabelFont;
    }
    QColor tickLabelColor() const
    {
        return mTickLabelColor;
    }
    double    tickLabelRotation() const;
    LabelSide tickLabelSide() const;
    QString   dateTimeFormat() const
    {
        return mDateTimeFormat;
    }
    Qt::TimeSpec dateTimeSpec() const
    {
        return mDateTimeSpec;
    }
    QString numberFormat() const;
    int     numberPrecision() const
    {
        return mNumberPrecision;
    }
    double tickStep() const
    {
        return mTickStep;
    }
    QVector<double> tickVector() const
    {
        return mTickVector;
    }
    QVector<QString> tickVectorLabels() const
    {
        return mTickVectorLabels;
    }
    int tickLengthIn() const;
    int tickLengthOut() const;
    int subTickCount() const
    {
        return mSubTickCount;
    }
    int  subTickLengthIn() const;
    int  subTickLengthOut() const;
    QPen basePen() const
    {
        return mBasePen;
    }
    QPen tickPen() const
    {
        return mTickPen;
    }
    QPen subTickPen() const
    {
        return mSubTickPen;
    }
    QFont labelFont() const
    {
        return mLabelFont;
    }
    QColor labelColor() const
    {
        return mLabelColor;
    }
    QString label() const
    {
        return mLabel;
    }
    int labelPadding() const;
    int padding() const
    {
        return mPadding;
    }
    int             offset() const;
    SelectableParts selectedParts() const
    {
        return mSelectedParts;
    }
    SelectableParts selectableParts() const
    {
        return mSelectableParts;
    }
    QFont selectedTickLabelFont() const
    {
        return mSelectedTickLabelFont;
    }
    QFont selectedLabelFont() const
    {
        return mSelectedLabelFont;
    }
    QColor selectedTickLabelColor() const
    {
        return mSelectedTickLabelColor;
    }
    QColor selectedLabelColor() const
    {
        return mSelectedLabelColor;
    }
    QPen selectedBasePen() const
    {
        return mSelectedBasePen;
    }
    QPen selectedTickPen() const
    {
        return mSelectedTickPen;
    }
    QPen selectedSubTickPen() const
    {
        return mSelectedSubTickPen;
    }
    QCPLineEnding lowerEnding() const;
    QCPLineEnding upperEnding() const;
    QCPGrid*      grid() const
    {
        return mGrid;
    }

    // setters:
    Q_SLOT void setScaleType(QCPAxis::ScaleType type);
    void        setScaleLogBase(double base);
    Q_SLOT void setRange(const QCPRange& range);
    void        setRange(double lower, double upper);
    void        setRange(double position, double size, Qt::AlignmentFlag alignment);
    void        setRangeLower(double lower);
    void        setRangeUpper(double upper);
    void        setRangeReversed(bool reversed);
    void        setAutoTicks(bool on);
    void        setAutoTickCount(int approximateCount);
    void        setAutoTickLabels(bool on);
    void        setAutoTickStep(bool on);
    void        setAutoSubTicks(bool on);
    void        setTicks(bool show);
    void        setTickLabels(bool show);
    void        setTickLabelPadding(int padding);
    void        setTickLabelType(LabelType type);
    void        setTickLabelFont(const QFont& font);
    void        setTickLabelColor(const QColor& color);
    void        setTickLabelRotation(double degrees);
    void        setTickLabelSide(LabelSide side);
    void        setDateTimeFormat(const QString& format);
    void        setDateTimeSpec(const Qt::TimeSpec& timeSpec);
    void        setNumberFormat(const QString& formatCode);
    void        setNumberPrecision(int precision);
    void        setTickStep(double step);
    void        setTickVector(const QVector<double>& vec);
    void        setTickVectorLabels(const QVector<QString>& vec);
    void        setTickLength(int inside, int outside = 0);
    void        setTickLengthIn(int inside);
    void        setTickLengthOut(int outside);
    void        setSubTickCount(int count);
    void        setSubTickLength(int inside, int outside = 0);
    void        setSubTickLengthIn(int inside);
    void        setSubTickLengthOut(int outside);
    void        setBasePen(const QPen& pen);
    void        setTickPen(const QPen& pen);
    void        setSubTickPen(const QPen& pen);
    void        setLabelFont(const QFont& font);
    void        setLabelColor(const QColor& color);
    void        setLabel(const QString& str);
    void        setLabelPadding(int padding);
    void        setPadding(int padding);
    void        setOffset(int offset);
    void        setSelectedTickLabelFont(const QFont& font);
    void        setSelectedLabelFont(const QFont& font);
    void        setSelectedTickLabelColor(const QColor& color);
    void        setSelectedLabelColor(const QColor& color);
    void        setSelectedBasePen(const QPen& pen);
    void        setSelectedTickPen(const QPen& pen);
    void        setSelectedSubTickPen(const QPen& pen);
    Q_SLOT void setSelectableParts(const QCPAxis::SelectableParts& selectableParts);
    Q_SLOT void setSelectedParts(const QCPAxis::SelectableParts& selectedParts);
    void        setLowerEnding(const QCPLineEnding& ending);
    void        setUpperEnding(const QCPLineEnding& ending);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    // non-property methods:
    Qt::Orientation orientation() const
    {
        return mOrientation;
    }
    void                         moveRange(double diff);
    void                         scaleRange(double factor, double center);
    void                         setScaleRatio(const QCPAxis* otherAxis, double ratio = 1.0);
    void                         rescale(bool onlyVisiblePlottables = false);
    double                       pixelToCoord(double value) const;
    double                       coordToPixel(double value) const;
    SelectablePart               getPartAt(const QPointF& pos) const;
    QList<QCPAbstractPlottable*> plottables() const;
    QList<QCPGraph*>             graphs() const;
    QList<QCPAbstractItem*>      items() const;

    static AxisType        marginSideToAxisType(QCP::MarginSide side);
    static Qt::Orientation orientation(AxisType type)
    {
        return type == atBottom || type == atTop ? Qt::Horizontal : Qt::Vertical;
    }
    static AxisType opposite(AxisType type);

signals:
    void ticksRequest();
    void rangeChanged(const QCPRange& newRange);
    void rangeChanged(const QCPRange& newRange, const QCPRange& oldRange);
    void scaleTypeChanged(QCPAxis::ScaleType scaleType);
    void selectionChanged(const QCPAxis::SelectableParts& parts);
    void selectableChanged(const QCPAxis::SelectableParts& parts);

protected:
    // property members:
    // axis base:
    AxisType        mAxisType;
    QCPAxisRect*    mAxisRect;
    // int mOffset; // in QCPAxisPainter
    int             mPadding;
    Qt::Orientation mOrientation;
    SelectableParts mSelectableParts, mSelectedParts;
    QPen            mBasePen, mSelectedBasePen;
    // QCPLineEnding mLowerEnding, mUpperEnding; // in QCPAxisPainter
    //  axis label:
    // int mLabelPadding; // in QCPAxisPainter
    QString         mLabel;
    QFont           mLabelFont, mSelectedLabelFont;
    QColor          mLabelColor, mSelectedLabelColor;
    // tick labels:
    // int mTickLabelPadding; // in QCPAxisPainter
    bool            mTickLabels, mAutoTickLabels;
    // double mTickLabelRotation; // in QCPAxisPainter
    LabelType       mTickLabelType;
    QFont           mTickLabelFont, mSelectedTickLabelFont;
    QColor          mTickLabelColor, mSelectedTickLabelColor;
    QString         mDateTimeFormat;
    Qt::TimeSpec    mDateTimeSpec;
    int             mNumberPrecision;
    QLatin1Char     mNumberFormatChar;
    bool            mNumberBeautifulPowers;
    // bool mNumberMultiplyCross; // QCPAxisPainter
    //  ticks and subticks:
    bool            mTicks;
    double          mTickStep;
    int             mSubTickCount, mAutoTickCount;
    bool            mAutoTicks, mAutoTickStep, mAutoSubTicks;
    // int mTickLengthIn, mTickLengthOut, mSubTickLengthIn, mSubTickLengthOut; // QCPAxisPainter
    QPen            mTickPen, mSelectedTickPen;
    QPen            mSubTickPen, mSelectedSubTickPen;
    // scale and range:
    QCPRange        mRange;
    bool            mRangeReversed;
    ScaleType       mScaleType;
    double          mScaleLogBase, mScaleLogBaseLogInv;

    // non-property members:
    QCPGrid*               mGrid;
    QCPAxisPainterPrivate* mAxisPainter;
    int                    mLowestVisibleTick, mHighestVisibleTick;
    QVector<double>        mTickVector;
    QVector<QString>       mTickVectorLabels;
    QVector<double>        mSubTickVector;
    bool                   mCachedMarginValid;
    int                    mCachedMargin;

    // introduced virtual methods:
    virtual void setupTickVectors();
    virtual void generateAutoTicks();
    virtual int  calculateAutoSubTickCount(double tickStep) const;
    virtual int  calculateMargin();

    // reimplemented virtual methods:
    virtual void             applyDefaultAntialiasingHint(QCPPainter* painter) const;
    virtual void             draw(QCPPainter* painter);
    virtual QCP::Interaction selectionCategory() const;
    // events:
    virtual void             selectEvent(QMouseEvent* event, bool additive, const QVariant& details,
                                         bool* selectionStateChanged);
    virtual void             deselectEvent(bool* selectionStateChanged);

    // non-virtual methods:
    void   visibleTickBounds(int& lowIndex, int& highIndex) const;
    double baseLog(double value) const;
    double basePow(double value) const;
    QPen   getBasePen() const;
    QPen   getTickPen() const;
    QPen   getSubTickPen() const;
    QFont  getTickLabelFont() const;
    QFont  getLabelFont() const;
    QColor getTickLabelColor() const;
    QColor getLabelColor() const;

private:
    Q_DISABLE_COPY(QCPAxis)

    friend class QCustomPlot;
    friend class QCPGrid;
    friend class QCPAxisRect;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QCPAxis::SelectableParts)
Q_DECLARE_OPERATORS_FOR_FLAGS(QCPAxis::AxisTypes)
Q_DECLARE_METATYPE(QCPAxis::SelectablePart)

class QCPAxisPainterPrivate
{
public:
    explicit QCPAxisPainterPrivate(QCustomPlot* parentPlot);
    virtual ~QCPAxisPainterPrivate();

    virtual void draw(QCPPainter* painter);
    virtual int  size() const;
    void         clearCache();

    QRect axisSelectionBox() const
    {
        return mAxisSelectionBox;
    }
    QRect tickLabelsSelectionBox() const
    {
        return mTickLabelsSelectionBox;
    }
    QRect labelSelectionBox() const
    {
        return mLabelSelectionBox;
    }

    // public property members:
    QCPAxis::AxisType  type;
    QPen               basePen;
    QCPLineEnding      lowerEnding, upperEnding; // directly accessed by QCPAxis setters/getters
    int                labelPadding;             // directly accessed by QCPAxis setters/getters
    QFont              labelFont;
    QColor             labelColor;
    QString            label;
    int                tickLabelPadding;  // directly accessed by QCPAxis setters/getters
    double             tickLabelRotation; // directly accessed by QCPAxis setters/getters
    QCPAxis::LabelSide tickLabelSide;     // directly accessed by QCPAxis setters/getters
    bool               substituteExponent;
    bool               numberMultiplyCross; // directly accessed by QCPAxis setters/getters
    int                tickLengthIn, tickLengthOut, subTickLengthIn,
        subTickLengthOut; // directly accessed by QCPAxis setters/getters
    QPen   tickPen, subTickPen;
    QFont  tickLabelFont;
    QColor tickLabelColor;
    QRect  axisRect, viewportRect;
    double offset; // directly accessed by QCPAxis setters/getters
    bool   abbreviateDecimalPowers;
    bool   reversedEndings;

    QVector<double>  subTickPositions;
    QVector<double>  tickPositions;
    QVector<QString> tickLabels;

protected:
    struct CachedLabel {
        QPointF offset;
        QPixmap pixmap;
    };
    struct TickLabelData {
        QString basePart, expPart;
        QRect   baseBounds, expBounds, totalBounds, rotatedTotalBounds;
        QFont   baseFont, expFont;
    };
    QCustomPlot* mParentPlot;
    QByteArray   mLabelParameterHash; // to determine whether mLabelCache needs to be cleared due to
                                      // changed parameters
    QCache<QString, CachedLabel> mLabelCache;
    QRect                        mAxisSelectionBox, mTickLabelsSelectionBox, mLabelSelectionBox;

    virtual QByteArray generateLabelParameterHash() const;

    virtual void          placeTickLabel(QCPPainter* painter, double position, int distanceToAxis,
                                         const QString& text, QSize* tickLabelsSize);
    virtual void          drawTickLabel(QCPPainter* painter, double x, double y,
                                        const TickLabelData& labelData) const;
    virtual TickLabelData getTickLabelData(const QFont& font, const QString& text) const;
    virtual QPointF       getTickLabelDrawOffset(const TickLabelData& labelData) const;
    virtual void          getMaxTickLabelSize(const QFont& font, const QString& text,
                                              QSize* tickLabelsSize) const;
};

class QCP_LIB_DECL QCPAbstractPlottable : public QCPLayerable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QString name READ name WRITE setName)
    Q_PROPERTY(bool antialiasedFill READ antialiasedFill WRITE setAntialiasedFill)
    Q_PROPERTY(bool antialiasedScatters READ antialiasedScatters WRITE setAntialiasedScatters)
    Q_PROPERTY(bool antialiasedErrorBars READ antialiasedErrorBars WRITE setAntialiasedErrorBars)
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(QBrush brush READ brush WRITE setBrush)
    Q_PROPERTY(QBrush selectedBrush READ selectedBrush WRITE setSelectedBrush)
    Q_PROPERTY(QCPAxis* keyAxis READ keyAxis WRITE setKeyAxis)
    Q_PROPERTY(QCPAxis* valueAxis READ valueAxis WRITE setValueAxis)
    Q_PROPERTY(bool selectable READ selectable WRITE setSelectable NOTIFY selectableChanged)
    Q_PROPERTY(bool selected READ selected WRITE setSelected NOTIFY selectionChanged)
    /// \endcond
public:
    QCPAbstractPlottable(QCPAxis* keyAxis, QCPAxis* valueAxis);

    // getters:
    QString name() const
    {
        return mName;
    }
    bool antialiasedFill() const
    {
        return mAntialiasedFill;
    }
    bool antialiasedScatters() const
    {
        return mAntialiasedScatters;
    }
    bool antialiasedErrorBars() const
    {
        return mAntialiasedErrorBars;
    }
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    QBrush brush() const
    {
        return mBrush;
    }
    QBrush selectedBrush() const
    {
        return mSelectedBrush;
    }
    QCPAxis* keyAxis() const
    {
        return mKeyAxis.data();
    }
    QCPAxis* valueAxis() const
    {
        return mValueAxis.data();
    }
    bool selectable() const
    {
        return mSelectable;
    }
    bool selected() const
    {
        return mSelected;
    }

    // setters:
    void        setName(const QString& name);
    void        setAntialiasedFill(bool enabled);
    void        setAntialiasedScatters(bool enabled);
    void        setAntialiasedErrorBars(bool enabled);
    void        setPen(const QPen& pen);
    void        setSelectedPen(const QPen& pen);
    void        setBrush(const QBrush& brush);
    void        setSelectedBrush(const QBrush& brush);
    void        setKeyAxis(QCPAxis* axis);
    void        setValueAxis(QCPAxis* axis);
    Q_SLOT void setSelectable(bool selectable);
    Q_SLOT void setSelected(bool selected);

    // introduced virtual methods:
    virtual void   clearData()                             = 0;
    virtual double selectTest(const QPointF& pos, bool onlySelectable,
                              QVariant* details = 0) const = 0;
    virtual bool   addToLegend();
    virtual bool   removeFromLegend() const;

    // non-property methods:
    void rescaleAxes(bool onlyEnlarge = false) const;
    void rescaleKeyAxis(bool onlyEnlarge = false) const;
    void rescaleValueAxis(bool onlyEnlarge = false) const;

signals:
    void selectionChanged(bool selected);
    void selectableChanged(bool selectable);

protected:
    /*!
      Represents negative and positive sign domain for passing to \ref getKeyRange and \ref
      getValueRange.
    */
    enum SignDomain {
        sdNegative ///< The negative sign domain, i.e. numbers smaller than zero
        ,
        sdBoth ///< Both sign domains, including zero, i.e. all (rational) numbers
        ,
        sdPositive ///< The positive sign domain, i.e. numbers greater than zero
    };

    // property members:
    QString           mName;
    bool              mAntialiasedFill, mAntialiasedScatters, mAntialiasedErrorBars;
    QPen              mPen, mSelectedPen;
    QBrush            mBrush, mSelectedBrush;
    QPointer<QCPAxis> mKeyAxis, mValueAxis;
    bool              mSelectable, mSelected;

    // reimplemented virtual methods:
    virtual QRect            clipRect() const;
    virtual void             draw(QCPPainter* painter) = 0;
    virtual QCP::Interaction selectionCategory() const;
    void                     applyDefaultAntialiasingHint(QCPPainter* painter) const;
    // events:
    virtual void             selectEvent(QMouseEvent* event, bool additive, const QVariant& details,
                                         bool* selectionStateChanged);
    virtual void             deselectEvent(bool* selectionStateChanged);

    // introduced virtual methods:
    virtual void     drawLegendIcon(QCPPainter* painter, const QRectF& rect) const           = 0;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const   = 0;
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const = 0;

    // non-virtual methods:
    void          coordsToPixels(double key, double value, double& x, double& y) const;
    const QPointF coordsToPixels(double key, double value) const;
    void          pixelsToCoords(double x, double y, double& key, double& value) const;
    void          pixelsToCoords(const QPointF& pixelPos, double& key, double& value) const;
    QPen          mainPen() const;
    QBrush        mainBrush() const;
    void          applyFillAntialiasingHint(QCPPainter* painter) const;
    void          applyScattersAntialiasingHint(QCPPainter* painter) const;
    void          applyErrorBarsAntialiasingHint(QCPPainter* painter) const;
    double distSqrToLine(const QPointF& start, const QPointF& end, const QPointF& point) const;

private:
    Q_DISABLE_COPY(QCPAbstractPlottable)

    friend class QCustomPlot;
    friend class QCPAxis;
    friend class QCPPlottableLegendItem;
};

class QCP_LIB_DECL QCPItemAnchor
{
public:
    QCPItemAnchor(QCustomPlot* parentPlot, QCPAbstractItem* parentItem, const QString name,
                  int anchorId = -1);
    virtual ~QCPItemAnchor();

    // getters:
    QString name() const
    {
        return mName;
    }
    virtual QPointF pixelPoint() const;

protected:
    // property members:
    QString mName;

    // non-property members:
    QCustomPlot*           mParentPlot;
    QCPAbstractItem*       mParentItem;
    int                    mAnchorId;
    QSet<QCPItemPosition*> mChildrenX, mChildrenY;

    // introduced virtual methods:
    virtual QCPItemPosition* toQCPItemPosition()
    {
        return 0;
    }

    // non-virtual methods:
    void addChildX(QCPItemPosition* pos); // called from pos when this anchor is set as parent
    void removeChildX(
        QCPItemPosition* pos); // called from pos when its parent anchor is reset or pos deleted
    void addChildY(QCPItemPosition* pos); // called from pos when this anchor is set as parent
    void removeChildY(
        QCPItemPosition* pos); // called from pos when its parent anchor is reset or pos deleted

private:
    Q_DISABLE_COPY(QCPItemAnchor)

    friend class QCPItemPosition;
};

class QCP_LIB_DECL QCPItemPosition : public QCPItemAnchor
{
public:
    /*!
      Defines the ways an item position can be specified. Thus it defines what the numbers passed to
      \ref setCoords actually mean.

      \see setType
    */
    enum PositionType {
        ptAbsolute ///< Static positioning in pixels, starting from the top left corner of the
                   ///< viewport/widget.
        ,
        ptViewportRatio ///< Static positioning given by a fraction of the viewport size. For
                        ///< example, if you call setCoords(0, 0), the position will be at the top
                        ///< left corner of the viewport/widget. setCoords(1, 1) will be at the
                        ///< bottom right corner, setCoords(0.5, 0) will be horizontally centered
                        ///< and vertically at the top of the viewport/widget, etc.
        ,
        ptAxisRectRatio ///< Static positioning given by a fraction of the axis rect size (see \ref
                        ///< setAxisRect). For example, if you call setCoords(0, 0), the position
                        ///< will be at the top left corner of the axis rect. setCoords(1, 1) will
                        ///< be at the bottom right corner, setCoords(0.5, 0) will be horizontally
                        ///< centered and vertically at the top of the axis rect, etc. You can also
                        ///< go beyond the axis rect by providing negative coordinates or
                        ///< coordinates larger than 1.
        ,
        ptPlotCoords ///< Dynamic positioning at a plot coordinate defined by two axes (see \ref
                     ///< setAxes).
    };

    QCPItemPosition(QCustomPlot* parentPlot, QCPAbstractItem* parentItem, const QString name);
    virtual ~QCPItemPosition();

    // getters:
    PositionType type() const
    {
        return typeX();
    }
    PositionType typeX() const
    {
        return mPositionTypeX;
    }
    PositionType typeY() const
    {
        return mPositionTypeY;
    }
    QCPItemAnchor* parentAnchor() const
    {
        return parentAnchorX();
    }
    QCPItemAnchor* parentAnchorX() const
    {
        return mParentAnchorX;
    }
    QCPItemAnchor* parentAnchorY() const
    {
        return mParentAnchorY;
    }
    double key() const
    {
        return mKey;
    }
    double value() const
    {
        return mValue;
    }
    QPointF coords() const
    {
        return QPointF(mKey, mValue);
    }
    QCPAxis* keyAxis() const
    {
        return mKeyAxis.data();
    }
    QCPAxis* valueAxis() const
    {
        return mValueAxis.data();
    }
    QCPAxisRect*    axisRect() const;
    virtual QPointF pixelPoint() const;

    // setters:
    void setType(PositionType type);
    void setTypeX(PositionType type);
    void setTypeY(PositionType type);
    bool setParentAnchor(QCPItemAnchor* parentAnchor, bool keepPixelPosition = false);
    bool setParentAnchorX(QCPItemAnchor* parentAnchor, bool keepPixelPosition = false);
    bool setParentAnchorY(QCPItemAnchor* parentAnchor, bool keepPixelPosition = false);
    void setCoords(double key, double value);
    void setCoords(const QPointF& coords);
    void setAxes(QCPAxis* keyAxis, QCPAxis* valueAxis);
    void setAxisRect(QCPAxisRect* axisRect);
    void setPixelPoint(const QPointF& pixelPoint);

protected:
    // property members:
    PositionType          mPositionTypeX, mPositionTypeY;
    QPointer<QCPAxis>     mKeyAxis, mValueAxis;
    QPointer<QCPAxisRect> mAxisRect;
    double                mKey, mValue;
    QCPItemAnchor *       mParentAnchorX, *mParentAnchorY;

    // reimplemented virtual methods:
    virtual QCPItemPosition* toQCPItemPosition()
    {
        return this;
    }

private:
    Q_DISABLE_COPY(QCPItemPosition)
};

class QCP_LIB_DECL QCPAbstractItem : public QCPLayerable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(bool clipToAxisRect READ clipToAxisRect WRITE setClipToAxisRect)
    Q_PROPERTY(QCPAxisRect* clipAxisRect READ clipAxisRect WRITE setClipAxisRect)
    Q_PROPERTY(bool selectable READ selectable WRITE setSelectable NOTIFY selectableChanged)
    Q_PROPERTY(bool selected READ selected WRITE setSelected NOTIFY selectionChanged)
    /// \endcond
public:
    QCPAbstractItem(QCustomPlot* parentPlot);
    virtual ~QCPAbstractItem();

    // getters:
    bool clipToAxisRect() const
    {
        return mClipToAxisRect;
    }
    QCPAxisRect* clipAxisRect() const;
    bool         selectable() const
    {
        return mSelectable;
    }
    bool selected() const
    {
        return mSelected;
    }

    // setters:
    void        setClipToAxisRect(bool clip);
    void        setClipAxisRect(QCPAxisRect* rect);
    Q_SLOT void setSelectable(bool selectable);
    Q_SLOT void setSelected(bool selected);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable,
                              QVariant* details = 0) const = 0;

    // non-virtual methods:
    QList<QCPItemPosition*> positions() const
    {
        return mPositions;
    }
    QList<QCPItemAnchor*> anchors() const
    {
        return mAnchors;
    }
    QCPItemPosition* position(const QString& name) const;
    QCPItemAnchor*   anchor(const QString& name) const;
    bool             hasAnchor(const QString& name) const;

signals:
    void selectionChanged(bool selected);
    void selectableChanged(bool selectable);

protected:
    // property members:
    bool                    mClipToAxisRect;
    QPointer<QCPAxisRect>   mClipAxisRect;
    QList<QCPItemPosition*> mPositions;
    QList<QCPItemAnchor*>   mAnchors;
    bool                    mSelectable, mSelected;

    // reimplemented virtual methods:
    virtual QCP::Interaction selectionCategory() const;
    virtual QRect            clipRect() const;
    virtual void             applyDefaultAntialiasingHint(QCPPainter* painter) const;
    virtual void             draw(QCPPainter* painter) = 0;
    // events:
    virtual void             selectEvent(QMouseEvent* event, bool additive, const QVariant& details,
                                         bool* selectionStateChanged);
    virtual void             deselectEvent(bool* selectionStateChanged);

    // introduced virtual methods:
    virtual QPointF anchorPixelPoint(int anchorId) const;

    // non-virtual methods:
    double distSqrToLine(const QPointF& start, const QPointF& end, const QPointF& point) const;
    double rectSelectTest(const QRectF& rect, const QPointF& pos, bool filledRect) const;
    QCPItemPosition* createPosition(const QString& name);
    QCPItemAnchor*   createAnchor(const QString& name, int anchorId);

private:
    Q_DISABLE_COPY(QCPAbstractItem)

    friend class QCustomPlot;
    friend class QCPItemAnchor;
};

class QCP_LIB_DECL QCustomPlot : public QWidget
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QRect viewport READ viewport WRITE setViewport)
    Q_PROPERTY(QPixmap background READ background WRITE setBackground)
    Q_PROPERTY(bool backgroundScaled READ backgroundScaled WRITE setBackgroundScaled)
    Q_PROPERTY(Qt::AspectRatioMode backgroundScaledMode READ backgroundScaledMode WRITE
                   setBackgroundScaledMode)
    Q_PROPERTY(QCPLayoutGrid* plotLayout READ plotLayout)
    Q_PROPERTY(bool autoAddPlottableToLegend READ autoAddPlottableToLegend WRITE
                   setAutoAddPlottableToLegend)
    Q_PROPERTY(int selectionTolerance READ selectionTolerance WRITE setSelectionTolerance)
    Q_PROPERTY(bool noAntialiasingOnDrag READ noAntialiasingOnDrag WRITE setNoAntialiasingOnDrag)
    Q_PROPERTY(Qt::KeyboardModifier multiSelectModifier READ multiSelectModifier WRITE
                   setMultiSelectModifier)
    /// \endcond
public:
    /*!
      Defines how a layer should be inserted relative to an other layer.

      \see addLayer, moveLayer
    */
    enum LayerInsertMode {
        limBelow ///< Layer is inserted below other layer
        ,
        limAbove ///< Layer is inserted above other layer
    };
    Q_ENUMS(LayerInsertMode)

    /*!
      Defines with what timing the QCustomPlot surface is refreshed after a replot.

      \see replot
    */
    enum RefreshPriority {
        rpImmediate ///< The QCustomPlot surface is immediately refreshed, by calling
                    ///< QWidget::repaint() after the replot
        ,
        rpQueued ///< Queues the refresh such that it is performed at a slightly delayed point in
                 ///< time after the replot, by calling QWidget::update() after the replot
        ,
        rpHint ///< Whether to use immediate repaint or queued update depends on whether the
               ///< plotting hint \ref QCP::phForceRepaint is set, see \ref setPlottingHints.
    };

    explicit QCustomPlot(QWidget* parent = 0);
    virtual ~QCustomPlot();

    // getters:
    QRect viewport() const
    {
        return mViewport;
    }
    QPixmap background() const
    {
        return mBackgroundPixmap;
    }
    bool backgroundScaled() const
    {
        return mBackgroundScaled;
    }
    Qt::AspectRatioMode backgroundScaledMode() const
    {
        return mBackgroundScaledMode;
    }
    QCPLayoutGrid* plotLayout() const
    {
        return mPlotLayout;
    }
    QCP::AntialiasedElements antialiasedElements() const
    {
        return mAntialiasedElements;
    }
    QCP::AntialiasedElements notAntialiasedElements() const
    {
        return mNotAntialiasedElements;
    }
    bool autoAddPlottableToLegend() const
    {
        return mAutoAddPlottableToLegend;
    }
    const QCP::Interactions interactions() const
    {
        return mInteractions;
    }
    int selectionTolerance() const
    {
        return mSelectionTolerance;
    }
    bool noAntialiasingOnDrag() const
    {
        return mNoAntialiasingOnDrag;
    }
    QCP::PlottingHints plottingHints() const
    {
        return mPlottingHints;
    }
    Qt::KeyboardModifier multiSelectModifier() const
    {
        return mMultiSelectModifier;
    }

    // setters:
    void setViewport(const QRect& rect);
    void setBackground(const QPixmap& pm);
    void setBackground(const QPixmap& pm, bool scaled,
                       Qt::AspectRatioMode mode = Qt::KeepAspectRatioByExpanding);
    void setBackground(const QBrush& brush);
    void setBackgroundScaled(bool scaled);
    void setBackgroundScaledMode(Qt::AspectRatioMode mode);
    void setAntialiasedElements(const QCP::AntialiasedElements& antialiasedElements);
    void setAntialiasedElement(QCP::AntialiasedElement antialiasedElement, bool enabled = true);
    void setNotAntialiasedElements(const QCP::AntialiasedElements& notAntialiasedElements);
    void setNotAntialiasedElement(QCP::AntialiasedElement notAntialiasedElement,
                                  bool                    enabled = true);
    void setAutoAddPlottableToLegend(bool on);
    void setInteractions(const QCP::Interactions& interactions);
    void setInteraction(const QCP::Interaction& interaction, bool enabled = true);
    void setSelectionTolerance(int pixels);
    void setNoAntialiasingOnDrag(bool enabled);
    void setPlottingHints(const QCP::PlottingHints& hints);
    void setPlottingHint(QCP::PlottingHint hint, bool enabled = true);
    void setMultiSelectModifier(Qt::KeyboardModifier modifier);

    // non-property methods:
    // plottable interface:
    QCPAbstractPlottable*        plottable(int index);
    QCPAbstractPlottable*        plottable();
    bool                         addPlottable(QCPAbstractPlottable* plottable);
    bool                         removePlottable(QCPAbstractPlottable* plottable);
    bool                         removePlottable(int index);
    int                          clearPlottables();
    int                          plottableCount() const;
    QList<QCPAbstractPlottable*> selectedPlottables() const;
    QCPAbstractPlottable*        plottableAt(const QPointF& pos, bool onlySelectable = false) const;
    bool                         hasPlottable(QCPAbstractPlottable* plottable) const;

    // specialized interface for QCPGraph:
    QCPGraph*        graph(int index) const;
    QCPGraph*        graph() const;
    QCPGraph*        addGraph(QCPAxis* keyAxis = 0, QCPAxis* valueAxis = 0);
    bool             removeGraph(QCPGraph* graph);
    bool             removeGraph(int index);
    int              clearGraphs();
    int              graphCount() const;
    QList<QCPGraph*> selectedGraphs() const;

    // item interface:
    QCPAbstractItem*        item(int index) const;
    QCPAbstractItem*        item() const;
    bool                    addItem(QCPAbstractItem* item);
    bool                    removeItem(QCPAbstractItem* item);
    bool                    removeItem(int index);
    int                     clearItems();
    int                     itemCount() const;
    QList<QCPAbstractItem*> selectedItems() const;
    QCPAbstractItem*        itemAt(const QPointF& pos, bool onlySelectable = false) const;
    bool                    hasItem(QCPAbstractItem* item) const;

    // layer interface:
    QCPLayer* layer(const QString& name) const;
    QCPLayer* layer(int index) const;
    QCPLayer* currentLayer() const;
    bool      setCurrentLayer(const QString& name);
    bool      setCurrentLayer(QCPLayer* layer);
    int       layerCount() const;
    bool      addLayer(const QString& name, QCPLayer* otherLayer = 0,
                       LayerInsertMode insertMode = limAbove);
    bool      removeLayer(QCPLayer* layer);
    bool moveLayer(QCPLayer* layer, QCPLayer* otherLayer, LayerInsertMode insertMode = limAbove);

    // axis rect/layout interface:
    int                 axisRectCount() const;
    QCPAxisRect*        axisRect(int index = 0) const;
    QList<QCPAxisRect*> axisRects() const;
    QCPLayoutElement*   layoutElementAt(const QPointF& pos) const;
    Q_SLOT void         rescaleAxes(bool onlyVisiblePlottables = false);

    QList<QCPAxis*>   selectedAxes() const;
    QList<QCPLegend*> selectedLegends() const;
    Q_SLOT void       deselectAll();

    bool savePdf(const QString& fileName, bool noCosmeticPen = false, int width = 0, int height = 0,
                 const QString& pdfCreator = QString(), const QString& pdfTitle = QString());
    bool savePng(const QString& fileName, int width = 0, int height = 0, double scale = 1.0,
                 int quality = -1);
    bool saveJpg(const QString& fileName, int width = 0, int height = 0, double scale = 1.0,
                 int quality = -1);
    bool saveBmp(const QString& fileName, int width = 0, int height = 0, double scale = 1.0);
    bool saveRastered(const QString& fileName, int width, int height, double scale,
                      const char* format, int quality = -1);
    QPixmap     toPixmap(int width = 0, int height = 0, double scale = 1.0);
    void        toPainter(QCPPainter* painter, int width = 0, int height = 0);
    Q_SLOT void replot(QCustomPlot::RefreshPriority refreshPriority = QCustomPlot::rpHint);

    QCPAxis *  xAxis, *yAxis, *xAxis2, *yAxis2;
    QCPLegend* legend;

signals:
    void mouseDoubleClick(QMouseEvent* event);
    void mousePress(QMouseEvent* event);
    void mouseMove(QMouseEvent* event);
    void mouseRelease(QMouseEvent* event);
    void mouseWheel(QWheelEvent* event);

    void plottableClick(QCPAbstractPlottable* plottable, QMouseEvent* event);
    void plottableDoubleClick(QCPAbstractPlottable* plottable, QMouseEvent* event);
    void itemClick(QCPAbstractItem* item, QMouseEvent* event);
    void itemDoubleClick(QCPAbstractItem* item, QMouseEvent* event);
    void axisClick(QCPAxis* axis, QCPAxis::SelectablePart part, QMouseEvent* event);
    void axisDoubleClick(QCPAxis* axis, QCPAxis::SelectablePart part, QMouseEvent* event);
    void legendClick(QCPLegend* legend, QCPAbstractLegendItem* item, QMouseEvent* event);
    void legendDoubleClick(QCPLegend* legend, QCPAbstractLegendItem* item, QMouseEvent* event);
    void titleClick(QMouseEvent* event, QCPPlotTitle* title);
    void titleDoubleClick(QMouseEvent* event, QCPPlotTitle* title);

    void selectionChangedByUser();
    void beforeReplot();
    void afterReplot();

protected:
    // property members:
    QRect                        mViewport;
    QCPLayoutGrid*               mPlotLayout;
    bool                         mAutoAddPlottableToLegend;
    QList<QCPAbstractPlottable*> mPlottables;
    QList<QCPGraph*>
        mGraphs; // extra list of plottables also in mPlottables that are of type QCPGraph
    QList<QCPAbstractItem*>  mItems;
    QList<QCPLayer*>         mLayers;
    QCP::AntialiasedElements mAntialiasedElements, mNotAntialiasedElements;
    QCP::Interactions        mInteractions;
    int                      mSelectionTolerance;
    bool                     mNoAntialiasingOnDrag;
    QBrush                   mBackgroundBrush;
    QPixmap                  mBackgroundPixmap;
    QPixmap                  mScaledBackgroundPixmap;
    bool                     mBackgroundScaled;
    Qt::AspectRatioMode      mBackgroundScaledMode;
    QCPLayer*                mCurrentLayer;
    QCP::PlottingHints       mPlottingHints;
    Qt::KeyboardModifier     mMultiSelectModifier;

    // non-property members:
    QPixmap                    mPaintBuffer;
    QPoint                     mMousePressPos;
    QPointer<QCPLayoutElement> mMouseEventElement;
    bool                       mReplotting;

    // reimplemented virtual methods:
    virtual QSize minimumSizeHint() const;
    virtual QSize sizeHint() const;
    virtual void  paintEvent(QPaintEvent* event);
    virtual void  resizeEvent(QResizeEvent* event);
    virtual void  mouseDoubleClickEvent(QMouseEvent* event);
    virtual void  mousePressEvent(QMouseEvent* event);
    virtual void  mouseMoveEvent(QMouseEvent* event);
    virtual void  mouseReleaseEvent(QMouseEvent* event);
    virtual void  wheelEvent(QWheelEvent* event);

    // introduced virtual methods:
    virtual void draw(QCPPainter* painter);
    virtual void axisRemoved(QCPAxis* axis);
    virtual void legendRemoved(QCPLegend* legend);

    // non-virtual methods:
    void          updateLayerIndices() const;
    QCPLayerable* layerableAt(const QPointF& pos, bool onlySelectable,
                              QVariant* selectionDetails = 0) const;
    void          drawBackground(QCPPainter* painter);

    friend class QCPLegend;
    friend class QCPAxis;
    friend class QCPLayer;
    friend class QCPAxisRect;
    /*
    //增加游标
  public:
      void showTracer(bool show)
      {
          m_isShowTracer = show;
          if (m_xTracer)
              m_xTracer->setVisible(m_isShowTracer);
          foreach(XxwTracer * tracer, m_dataTracers)
          {
              if (tracer)
                  tracer->setVisible(m_isShowTracer);
          }
          if (m_lineTracer)
              m_lineTracer->setVisible(m_isShowTracer);
      }
  private:
    bool m_isShowTracer;//是否显示追踪器（鼠标在图中移动，显示对应的值）
    XxwTracer* m_xTracer;//x轴
    XxwTracer* m_yTracer;//y轴
    QList<XxwTracer*> m_dataTracers;//
    XxwTraceLine* m_lineTracer;//直线
    */
};

class QCP_LIB_DECL QCPColorGradient
{
    Q_GADGET
public:
    /*!
      Defines the color spaces in which color interpolation between gradient stops can be performed.

      \see setColorInterpolation
    */
    enum ColorInterpolation {
        ciRGB ///< Color channels red, green and blue are linearly interpolated
        ,
        ciHSV ///< Color channels hue, saturation and value are linearly interpolated (The hue is
              ///< interpolated over the shortest angle distance)
    };
    Q_ENUMS(ColorInterpolation)

    /*!
      Defines the available presets that can be loaded with \ref loadPreset. See the documentation
      there for an image of the presets.
    */
    enum GradientPreset {
        gpGrayscale ///< Continuous lightness from black to white (suited for non-biased data
                    ///< representation)
        ,
        gpHot ///< Continuous lightness from black over firey colors to white (suited for non-biased
              ///< data representation)
        ,
        gpCold ///< Continuous lightness from black over icey colors to white (suited for non-biased
               ///< data representation)
        ,
        gpNight ///< Continuous lightness from black over weak blueish colors to white (suited for
                ///< non-biased data representation)
        ,
        gpCandy ///< Blue over pink to white
        ,
        gpGeography ///< Colors suitable to represent different elevations on geographical maps
        ,
        gpIon ///< Half hue spectrum from black over purple to blue and finally green (creates
              ///< banding illusion but allows more precise magnitude estimates)
        ,
        gpThermal ///< Colors suitable for thermal imaging, ranging from dark blue over purple to
                  ///< orange, yellow and white
        ,
        gpPolar ///< Colors suitable to emphasize polarity around the center, with blue for
                ///< negative, black in the middle and red for positive values
        ,
        gpSpectrum ///< An approximation of the visible light spectrum (creates banding illusion but
                   ///< allows more precise magnitude estimates)
        ,
        gpJet ///< Hue variation similar to a spectrum, often used in numerical visualization
              ///< (creates banding illusion but allows more precise magnitude estimates)
        ,
        gpHues ///< Full hue cycle, with highest and lowest color red (suitable for periodic data,
               ///< such as angles and phases, see \ref setPeriodic)
    };
    Q_ENUMS(GradientPreset)

    QCPColorGradient(GradientPreset preset = gpCold);
    bool operator==(const QCPColorGradient& other) const;
    bool operator!=(const QCPColorGradient& other) const
    {
        return !(*this == other);
    }

    // getters:
    int levelCount() const
    {
        return mLevelCount;
    }
    QMap<double, QColor> colorStops() const
    {
        return mColorStops;
    }
    ColorInterpolation colorInterpolation() const
    {
        return mColorInterpolation;
    }
    bool periodic() const
    {
        return mPeriodic;
    }

    // setters:
    void setLevelCount(int n);
    void setColorStops(const QMap<double, QColor>& colorStops);
    void setColorStopAt(double position, const QColor& color);
    void setColorInterpolation(ColorInterpolation interpolation);
    void setPeriodic(bool enabled);

    // non-property methods:
    void             colorize(const double* data, const QCPRange& range, QRgb* scanLine, int n,
                              int dataIndexFactor = 1, bool logarithmic = false);
    QRgb             color(double position, const QCPRange& range, bool logarithmic = false);
    void             loadPreset(GradientPreset preset);
    void             clearColorStops();
    QCPColorGradient inverted() const;

protected:
    void updateColorBuffer();

    // property members:
    int                  mLevelCount;
    QMap<double, QColor> mColorStops;
    ColorInterpolation   mColorInterpolation;
    bool                 mPeriodic;

    // non-property members:
    QVector<QRgb> mColorBuffer;
    bool          mColorBufferInvalidated;
};

class QCP_LIB_DECL QCPAxisRect : public QCPLayoutElement
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPixmap background READ background WRITE setBackground)
    Q_PROPERTY(bool backgroundScaled READ backgroundScaled WRITE setBackgroundScaled)
    Q_PROPERTY(Qt::AspectRatioMode backgroundScaledMode READ backgroundScaledMode WRITE
                   setBackgroundScaledMode)
    Q_PROPERTY(Qt::Orientations rangeDrag READ rangeDrag WRITE setRangeDrag)
    Q_PROPERTY(Qt::Orientations rangeZoom READ rangeZoom WRITE setRangeZoom)
    /// \endcond
public:
    explicit QCPAxisRect(QCustomPlot* parentPlot, bool setupDefaultAxes = true);
    virtual ~QCPAxisRect();

    // getters:
    QPixmap background() const
    {
        return mBackgroundPixmap;
    }
    bool backgroundScaled() const
    {
        return mBackgroundScaled;
    }
    Qt::AspectRatioMode backgroundScaledMode() const
    {
        return mBackgroundScaledMode;
    }
    Qt::Orientations rangeDrag() const
    {
        return mRangeDrag;
    }
    Qt::Orientations rangeZoom() const
    {
        return mRangeZoom;
    }
    QCPAxis* rangeDragAxis(Qt::Orientation orientation);
    QCPAxis* rangeZoomAxis(Qt::Orientation orientation);
    double   rangeZoomFactor(Qt::Orientation orientation);

    // setters:
    void setBackground(const QPixmap& pm);
    void setBackground(const QPixmap& pm, bool scaled,
                       Qt::AspectRatioMode mode = Qt::KeepAspectRatioByExpanding);
    void setBackground(const QBrush& brush);
    void setBackgroundScaled(bool scaled);
    void setBackgroundScaledMode(Qt::AspectRatioMode mode);
    void setRangeDrag(Qt::Orientations orientations);
    void setRangeZoom(Qt::Orientations orientations);
    void setRangeDragAxes(QCPAxis* horizontal, QCPAxis* vertical);
    void setRangeZoomAxes(QCPAxis* horizontal, QCPAxis* vertical);
    void setRangeZoomFactor(double horizontalFactor, double verticalFactor);
    void setRangeZoomFactor(double factor);

    // non-property methods:
    int             axisCount(QCPAxis::AxisType type) const;
    QCPAxis*        axis(QCPAxis::AxisType type, int index = 0) const;
    QList<QCPAxis*> axes(QCPAxis::AxisTypes types) const;
    QList<QCPAxis*> axes() const;
    QCPAxis*        addAxis(QCPAxis::AxisType type, QCPAxis* axis = 0);
    QList<QCPAxis*> addAxes(QCPAxis::AxisTypes types);
    bool            removeAxis(QCPAxis* axis);
    QCPLayoutInset* insetLayout() const
    {
        return mInsetLayout;
    }

    void                         setupFullAxesBox(bool connectRanges = false);
    QList<QCPAbstractPlottable*> plottables() const;
    QList<QCPGraph*>             graphs() const;
    QList<QCPAbstractItem*>      items() const;

    // read-only interface imitating a QRect:
    int left() const
    {
        return mRect.left();
    }
    int right() const
    {
        return mRect.right();
    }
    int top() const
    {
        return mRect.top();
    }
    int bottom() const
    {
        return mRect.bottom();
    }
    int width() const
    {
        return mRect.width();
    }
    int height() const
    {
        return mRect.height();
    }
    QSize size() const
    {
        return mRect.size();
    }
    QPoint topLeft() const
    {
        return mRect.topLeft();
    }
    QPoint topRight() const
    {
        return mRect.topRight();
    }
    QPoint bottomLeft() const
    {
        return mRect.bottomLeft();
    }
    QPoint bottomRight() const
    {
        return mRect.bottomRight();
    }
    QPoint center() const
    {
        return mRect.center();
    }

    // reimplemented virtual methods:
    virtual void                     update(UpdatePhase phase);
    virtual QList<QCPLayoutElement*> elements(bool recursive) const;

protected:
    // property members:
    QBrush              mBackgroundBrush;
    QPixmap             mBackgroundPixmap;
    QPixmap             mScaledBackgroundPixmap;
    bool                mBackgroundScaled;
    Qt::AspectRatioMode mBackgroundScaledMode;
    QCPLayoutInset*     mInsetLayout;
    Qt::Orientations    mRangeDrag, mRangeZoom;
    QPointer<QCPAxis>   mRangeDragHorzAxis, mRangeDragVertAxis, mRangeZoomHorzAxis,
        mRangeZoomVertAxis;
    double                                    mRangeZoomFactorHorz, mRangeZoomFactorVert;
    // non-property members:
    QCPRange                                  mDragStartHorzRange, mDragStartVertRange;
    QCP::AntialiasedElements                  mAADragBackup, mNotAADragBackup;
    QPoint                                    mDragStart;
    bool                                      mDragging;
    QHash<QCPAxis::AxisType, QList<QCPAxis*>> mAxes;

    // reimplemented virtual methods:
    virtual void applyDefaultAntialiasingHint(QCPPainter* painter) const;
    virtual void draw(QCPPainter* painter);
    virtual int  calculateAutoMargin(QCP::MarginSide side);
    // events:
    virtual void mousePressEvent(QMouseEvent* event);
    virtual void mouseMoveEvent(QMouseEvent* event);
    virtual void mouseReleaseEvent(QMouseEvent* event);
    virtual void wheelEvent(QWheelEvent* event);

    // non-property methods:
    void drawBackground(QCPPainter* painter);
    void updateAxesOffset(QCPAxis::AxisType type);

private:
    Q_DISABLE_COPY(QCPAxisRect)

    friend class QCustomPlot;
};

class QCP_LIB_DECL QCPAbstractLegendItem : public QCPLayoutElement
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QCPLegend* parentLegend READ parentLegend)
    Q_PROPERTY(QFont font READ font WRITE setFont)
    Q_PROPERTY(QColor textColor READ textColor WRITE setTextColor)
    Q_PROPERTY(QFont selectedFont READ selectedFont WRITE setSelectedFont)
    Q_PROPERTY(QColor selectedTextColor READ selectedTextColor WRITE setSelectedTextColor)
    Q_PROPERTY(bool selectable READ selectable WRITE setSelectable NOTIFY selectionChanged)
    Q_PROPERTY(bool selected READ selected WRITE setSelected NOTIFY selectableChanged)
    /// \endcond
public:
    explicit QCPAbstractLegendItem(QCPLegend* parent);

    // getters:
    QCPLegend* parentLegend() const
    {
        return mParentLegend;
    }
    QFont font() const
    {
        return mFont;
    }
    QColor textColor() const
    {
        return mTextColor;
    }
    QFont selectedFont() const
    {
        return mSelectedFont;
    }
    QColor selectedTextColor() const
    {
        return mSelectedTextColor;
    }
    bool selectable() const
    {
        return mSelectable;
    }
    bool selected() const
    {
        return mSelected;
    }

    // setters:
    void        setFont(const QFont& font);
    void        setTextColor(const QColor& color);
    void        setSelectedFont(const QFont& font);
    void        setSelectedTextColor(const QColor& color);
    Q_SLOT void setSelectable(bool selectable);
    Q_SLOT void setSelected(bool selected);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

signals:
    void selectionChanged(bool selected);
    void selectableChanged(bool selectable);

protected:
    // property members:
    QCPLegend* mParentLegend;
    QFont      mFont;
    QColor     mTextColor;
    QFont      mSelectedFont;
    QColor     mSelectedTextColor;
    bool       mSelectable, mSelected;

    // reimplemented virtual methods:
    virtual QCP::Interaction selectionCategory() const;
    virtual void             applyDefaultAntialiasingHint(QCPPainter* painter) const;
    virtual QRect            clipRect() const;
    virtual void             draw(QCPPainter* painter) = 0;
    // events:
    virtual void             selectEvent(QMouseEvent* event, bool additive, const QVariant& details,
                                         bool* selectionStateChanged);
    virtual void             deselectEvent(bool* selectionStateChanged);

private:
    Q_DISABLE_COPY(QCPAbstractLegendItem)

    friend class QCPLegend;
};

class QCP_LIB_DECL QCPPlottableLegendItem : public QCPAbstractLegendItem
{
    Q_OBJECT
public:
    QCPPlottableLegendItem(QCPLegend* parent, QCPAbstractPlottable* plottable);

    // getters:
    QCPAbstractPlottable* plottable()
    {
        return mPlottable;
    }

protected:
    // property members:
    QCPAbstractPlottable* mPlottable;

    // reimplemented virtual methods:
    virtual void  draw(QCPPainter* painter);
    virtual QSize minimumSizeHint() const;

    // non-virtual methods:
    QPen   getIconBorderPen() const;
    QColor getTextColor() const;
    QFont  getFont() const;
};

class QCP_LIB_DECL QCPLegend : public QCPLayoutGrid
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen borderPen READ borderPen WRITE setBorderPen)
    Q_PROPERTY(QBrush brush READ brush WRITE setBrush)
    Q_PROPERTY(QFont font READ font WRITE setFont)
    Q_PROPERTY(QColor textColor READ textColor WRITE setTextColor)
    Q_PROPERTY(QSize iconSize READ iconSize WRITE setIconSize)
    Q_PROPERTY(int iconTextPadding READ iconTextPadding WRITE setIconTextPadding)
    Q_PROPERTY(QPen iconBorderPen READ iconBorderPen WRITE setIconBorderPen)
    Q_PROPERTY(SelectableParts selectableParts READ selectableParts WRITE setSelectableParts NOTIFY
                   selectionChanged)
    Q_PROPERTY(SelectableParts selectedParts READ selectedParts WRITE setSelectedParts NOTIFY
                   selectableChanged)
    Q_PROPERTY(QPen selectedBorderPen READ selectedBorderPen WRITE setSelectedBorderPen)
    Q_PROPERTY(QPen selectedIconBorderPen READ selectedIconBorderPen WRITE setSelectedIconBorderPen)
    Q_PROPERTY(QBrush selectedBrush READ selectedBrush WRITE setSelectedBrush)
    Q_PROPERTY(QFont selectedFont READ selectedFont WRITE setSelectedFont)
    Q_PROPERTY(QColor selectedTextColor READ selectedTextColor WRITE setSelectedTextColor)
    /// \endcond
public:
    /*!
      Defines the selectable parts of a legend

      \see setSelectedParts, setSelectableParts
    */
    enum SelectablePart {
        spNone = 0x000 ///< <tt>0x000</tt> None
        ,
        spLegendBox = 0x001 ///< <tt>0x001</tt> The legend box (frame)
        ,
        spItems = 0x002 ///< <tt>0x002</tt> Legend items individually (see \ref selectedItems)
    };
    Q_FLAGS(SelectablePart SelectableParts)
    Q_DECLARE_FLAGS(SelectableParts, SelectablePart)

    explicit QCPLegend();
    virtual ~QCPLegend();

    // getters:
    QPen borderPen() const
    {
        return mBorderPen;
    }
    QBrush brush() const
    {
        return mBrush;
    }
    QFont font() const
    {
        return mFont;
    }
    QColor textColor() const
    {
        return mTextColor;
    }
    QSize iconSize() const
    {
        return mIconSize;
    }
    int iconTextPadding() const
    {
        return mIconTextPadding;
    }
    QPen iconBorderPen() const
    {
        return mIconBorderPen;
    }
    SelectableParts selectableParts() const
    {
        return mSelectableParts;
    }
    SelectableParts selectedParts() const;
    QPen            selectedBorderPen() const
    {
        return mSelectedBorderPen;
    }
    QPen selectedIconBorderPen() const
    {
        return mSelectedIconBorderPen;
    }
    QBrush selectedBrush() const
    {
        return mSelectedBrush;
    }
    QFont selectedFont() const
    {
        return mSelectedFont;
    }
    QColor selectedTextColor() const
    {
        return mSelectedTextColor;
    }

    // setters:
    void        setBorderPen(const QPen& pen);
    void        setBrush(const QBrush& brush);
    void        setFont(const QFont& font);
    void        setTextColor(const QColor& color);
    void        setIconSize(const QSize& size);
    void        setIconSize(int width, int height);
    void        setIconTextPadding(int padding);
    void        setIconBorderPen(const QPen& pen);
    Q_SLOT void setSelectableParts(const SelectableParts& selectableParts);
    Q_SLOT void setSelectedParts(const SelectableParts& selectedParts);
    void        setSelectedBorderPen(const QPen& pen);
    void        setSelectedIconBorderPen(const QPen& pen);
    void        setSelectedBrush(const QBrush& brush);
    void        setSelectedFont(const QFont& font);
    void        setSelectedTextColor(const QColor& color);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    // non-virtual methods:
    QCPAbstractLegendItem*        item(int index) const;
    QCPPlottableLegendItem*       itemWithPlottable(const QCPAbstractPlottable* plottable) const;
    int                           itemCount() const;
    bool                          hasItem(QCPAbstractLegendItem* item) const;
    bool                          hasItemWithPlottable(const QCPAbstractPlottable* plottable) const;
    bool                          addItem(QCPAbstractLegendItem* item);
    bool                          removeItem(int index);
    bool                          removeItem(QCPAbstractLegendItem* item);
    void                          clearItems();
    QList<QCPAbstractLegendItem*> selectedItems() const;

signals:
    void selectionChanged(QCPLegend::SelectableParts parts);
    void selectableChanged(QCPLegend::SelectableParts parts);

protected:
    // property members:
    QPen            mBorderPen, mIconBorderPen;
    QBrush          mBrush;
    QFont           mFont;
    QColor          mTextColor;
    QSize           mIconSize;
    int             mIconTextPadding;
    SelectableParts mSelectedParts, mSelectableParts;
    QPen            mSelectedBorderPen, mSelectedIconBorderPen;
    QBrush          mSelectedBrush;
    QFont           mSelectedFont;
    QColor          mSelectedTextColor;

    // reimplemented virtual methods:
    virtual void             parentPlotInitialized(QCustomPlot* parentPlot);
    virtual QCP::Interaction selectionCategory() const;
    virtual void             applyDefaultAntialiasingHint(QCPPainter* painter) const;
    virtual void             draw(QCPPainter* painter);
    // events:
    virtual void             selectEvent(QMouseEvent* event, bool additive, const QVariant& details,
                                         bool* selectionStateChanged);
    virtual void             deselectEvent(bool* selectionStateChanged);

    // non-virtual methods:
    QPen   getBorderPen() const;
    QBrush getBrush() const;

private:
    Q_DISABLE_COPY(QCPLegend)

    friend class QCustomPlot;
    friend class QCPAbstractLegendItem;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QCPLegend::SelectableParts)
Q_DECLARE_METATYPE(QCPLegend::SelectablePart)

class QCP_LIB_DECL QCPPlotTitle : public QCPLayoutElement
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QString text READ text WRITE setText)
    Q_PROPERTY(QFont font READ font WRITE setFont)
    Q_PROPERTY(QColor textColor READ textColor WRITE setTextColor)
    Q_PROPERTY(QFont selectedFont READ selectedFont WRITE setSelectedFont)
    Q_PROPERTY(QColor selectedTextColor READ selectedTextColor WRITE setSelectedTextColor)
    Q_PROPERTY(bool selectable READ selectable WRITE setSelectable NOTIFY selectableChanged)
    Q_PROPERTY(bool selected READ selected WRITE setSelected NOTIFY selectionChanged)
    /// \endcond
public:
    explicit QCPPlotTitle(QCustomPlot* parentPlot);
    explicit QCPPlotTitle(QCustomPlot* parentPlot, const QString& text);

    // getters:
    QString text() const
    {
        return mText;
    }
    QFont font() const
    {
        return mFont;
    }
    QColor textColor() const
    {
        return mTextColor;
    }
    QFont selectedFont() const
    {
        return mSelectedFont;
    }
    QColor selectedTextColor() const
    {
        return mSelectedTextColor;
    }
    bool selectable() const
    {
        return mSelectable;
    }
    bool selected() const
    {
        return mSelected;
    }

    // setters:
    void        setText(const QString& text);
    void        setFont(const QFont& font);
    void        setTextColor(const QColor& color);
    void        setSelectedFont(const QFont& font);
    void        setSelectedTextColor(const QColor& color);
    Q_SLOT void setSelectable(bool selectable);
    Q_SLOT void setSelected(bool selected);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

signals:
    void selectionChanged(bool selected);
    void selectableChanged(bool selectable);

protected:
    // property members:
    QString mText;
    QFont   mFont;
    QColor  mTextColor;
    QFont   mSelectedFont;
    QColor  mSelectedTextColor;
    QRect   mTextBoundingRect;
    bool    mSelectable, mSelected;

    // reimplemented virtual methods:
    virtual void  applyDefaultAntialiasingHint(QCPPainter* painter) const;
    virtual void  draw(QCPPainter* painter);
    virtual QSize minimumSizeHint() const;
    virtual QSize maximumSizeHint() const;
    // events:
    virtual void  selectEvent(QMouseEvent* event, bool additive, const QVariant& details,
                              bool* selectionStateChanged);
    virtual void  deselectEvent(bool* selectionStateChanged);

    // non-virtual methods:
    QFont  mainFont() const;
    QColor mainTextColor() const;

private:
    Q_DISABLE_COPY(QCPPlotTitle)
};

class QCPColorScaleAxisRectPrivate : public QCPAxisRect
{
    Q_OBJECT
public:
    explicit QCPColorScaleAxisRectPrivate(QCPColorScale* parentColorScale);

protected:
    QCPColorScale* mParentColorScale;
    QImage         mGradientImage;
    bool           mGradientImageInvalidated;
    // re-using some methods of QCPAxisRect to make them available to friend class QCPColorScale
    using QCPAxisRect::calculateAutoMargin;
    using QCPAxisRect::mouseMoveEvent;
    using QCPAxisRect::mousePressEvent;
    using QCPAxisRect::mouseReleaseEvent;
    using QCPAxisRect::update;
    using QCPAxisRect::wheelEvent;
    virtual void draw(QCPPainter* painter);
    void         updateGradientImage();
    Q_SLOT void  axisSelectionChanged(QCPAxis::SelectableParts selectedParts);
    Q_SLOT void  axisSelectableChanged(QCPAxis::SelectableParts selectableParts);
    friend class QCPColorScale;
};

class QCP_LIB_DECL QCPColorScale : public QCPLayoutElement
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QCPAxis::AxisType type READ type WRITE setType)
    Q_PROPERTY(QCPRange dataRange READ dataRange WRITE setDataRange NOTIFY dataRangeChanged)
    Q_PROPERTY(QCPAxis::ScaleType dataScaleType READ dataScaleType WRITE setDataScaleType NOTIFY
                   dataScaleTypeChanged)
    Q_PROPERTY(QCPColorGradient gradient READ gradient WRITE setGradient NOTIFY gradientChanged)
    Q_PROPERTY(QString label READ label WRITE setLabel)
    Q_PROPERTY(int barWidth READ barWidth WRITE setBarWidth)
    Q_PROPERTY(bool rangeDrag READ rangeDrag WRITE setRangeDrag)
    Q_PROPERTY(bool rangeZoom READ rangeZoom WRITE setRangeZoom)
    /// \endcond
public:
    explicit QCPColorScale(QCustomPlot* parentPlot);
    virtual ~QCPColorScale();

    // getters:
    QCPAxis* axis() const
    {
        return mColorAxis.data();
    }
    QCPAxis::AxisType type() const
    {
        return mType;
    }
    QCPRange dataRange() const
    {
        return mDataRange;
    }
    QCPAxis::ScaleType dataScaleType() const
    {
        return mDataScaleType;
    }
    QCPColorGradient gradient() const
    {
        return mGradient;
    }
    QString label() const;
    int     barWidth() const
    {
        return mBarWidth;
    }
    bool rangeDrag() const;
    bool rangeZoom() const;

    // setters:
    void        setType(QCPAxis::AxisType type);
    Q_SLOT void setDataRange(const QCPRange& dataRange);
    Q_SLOT void setDataScaleType(QCPAxis::ScaleType scaleType);
    Q_SLOT void setGradient(const QCPColorGradient& gradient);
    void        setLabel(const QString& str);
    void        setBarWidth(int width);
    void        setRangeDrag(bool enabled);
    void        setRangeZoom(bool enabled);

    // non-property methods:
    QList<QCPColorMap*> colorMaps() const;
    void                rescaleDataRange(bool onlyVisibleMaps);

    // reimplemented virtual methods:
    virtual void update(UpdatePhase phase);

signals:
    void dataRangeChanged(QCPRange newRange);
    void dataScaleTypeChanged(QCPAxis::ScaleType scaleType);
    void gradientChanged(QCPColorGradient newGradient);

protected:
    // property members:
    QCPAxis::AxisType  mType;
    QCPRange           mDataRange;
    QCPAxis::ScaleType mDataScaleType;
    QCPColorGradient   mGradient;
    int                mBarWidth;

    // non-property members:
    QPointer<QCPColorScaleAxisRectPrivate> mAxisRect;
    QPointer<QCPAxis>                      mColorAxis;

    // reimplemented virtual methods:
    virtual void applyDefaultAntialiasingHint(QCPPainter* painter) const;
    // events:
    virtual void mousePressEvent(QMouseEvent* event);
    virtual void mouseMoveEvent(QMouseEvent* event);
    virtual void mouseReleaseEvent(QMouseEvent* event);
    virtual void wheelEvent(QWheelEvent* event);

private:
    Q_DISABLE_COPY(QCPColorScale)

    friend class QCPColorScaleAxisRectPrivate;
};

/*! \file */

class QCP_LIB_DECL QCPData
{
public:
    QCPData();
    QCPData(double key, double value);
    double key, value;
    double keyErrorPlus, keyErrorMinus;
    double valueErrorPlus, valueErrorMinus;
};
Q_DECLARE_TYPEINFO(QCPData, Q_MOVABLE_TYPE);

/*! \typedef QCPDataMap
  Container for storing \ref QCPData items in a sorted fashion. The key of the map
  is the key member of the QCPData instance.

  This is the container in which QCPGraph holds its data.
  \see QCPData, QCPGraph::setData
*/
typedef QMap<double, QCPData>                QCPDataMap;
typedef QMapIterator<double, QCPData>        QCPDataMapIterator;
typedef QMutableMapIterator<double, QCPData> QCPDataMutableMapIterator;

class QCP_LIB_DECL QCPGraph : public QCPAbstractPlottable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(LineStyle lineStyle READ lineStyle WRITE setLineStyle)
    Q_PROPERTY(QCPScatterStyle scatterStyle READ scatterStyle WRITE setScatterStyle)
    Q_PROPERTY(ErrorType errorType READ errorType WRITE setErrorType)
    Q_PROPERTY(QPen errorPen READ errorPen WRITE setErrorPen)
    Q_PROPERTY(double errorBarSize READ errorBarSize WRITE setErrorBarSize)
    Q_PROPERTY(bool errorBarSkipSymbol READ errorBarSkipSymbol WRITE setErrorBarSkipSymbol)
    Q_PROPERTY(QCPGraph* channelFillGraph READ channelFillGraph WRITE setChannelFillGraph)
    Q_PROPERTY(bool adaptiveSampling READ adaptiveSampling WRITE setAdaptiveSampling)
    /// \endcond
public:
    /*!
      Defines how the graph's line is represented visually in the plot. The line is drawn with the
      current pen of the graph (\ref setPen).
      \see setLineStyle
    */
    enum LineStyle {
        lsNone ///< data points are not connected with any lines (e.g. data only represented
               ///< with symbols according to the scatter style, see \ref setScatterStyle)
        ,
        lsLine ///< data points are connected by a straight line
        ,
        lsStepLeft ///< line is drawn as steps where the step height is the value of the left data
                   ///< point
        ,
        lsStepRight ///< line is drawn as steps where the step height is the value of the right data
                    ///< point
        ,
        lsStepCenter ///< line is drawn as steps where the step is in between two data points
        ,
        lsImpulse ///< each data point is represented by a line parallel to the value axis, which
                  ///< reaches from the data point to the zero-value-line
    };
    Q_ENUMS(LineStyle)
    /*!
      Defines what kind of error bars are drawn for each data point
    */
    enum ErrorType {
        etNone ///< No error bars are shown
        ,
        etKey ///< Error bars for the key dimension of the data point are shown
        ,
        etValue ///< Error bars for the value dimension of the data point are shown
        ,
        etBoth ///< Error bars for both key and value dimensions of the data point are shown
    };
    Q_ENUMS(ErrorType)

    explicit QCPGraph(QCPAxis* keyAxis, QCPAxis* valueAxis);
    virtual ~QCPGraph();

    // getters:
    QCPDataMap* data() const
    {
        return mData;
    }
    LineStyle lineStyle() const
    {
        return mLineStyle;
    }
    QCPScatterStyle scatterStyle() const
    {
        return mScatterStyle;
    }
    ErrorType errorType() const
    {
        return mErrorType;
    }
    QPen errorPen() const
    {
        return mErrorPen;
    }
    double errorBarSize() const
    {
        return mErrorBarSize;
    }
    bool errorBarSkipSymbol() const
    {
        return mErrorBarSkipSymbol;
    }
    QCPGraph* channelFillGraph() const
    {
        return mChannelFillGraph.data();
    }
    bool adaptiveSampling() const
    {
        return mAdaptiveSampling;
    }

    // setters:
    void setData(QCPDataMap* data, bool copy = false);
    void setData(const QVector<double>& key, const QVector<double>& value);
    void setDataKeyError(const QVector<double>& key, const QVector<double>& value,
                         const QVector<double>& keyError);
    void setDataKeyError(const QVector<double>& key, const QVector<double>& value,
                         const QVector<double>& keyErrorMinus, const QVector<double>& keyErrorPlus);
    void setDataValueError(const QVector<double>& key, const QVector<double>& value,
                           const QVector<double>& valueError);
    void setDataValueError(const QVector<double>& key, const QVector<double>& value,
                           const QVector<double>& valueErrorMinus,
                           const QVector<double>& valueErrorPlus);
    void setDataBothError(const QVector<double>& key, const QVector<double>& value,
                          const QVector<double>& keyError, const QVector<double>& valueError);
    void setDataBothError(const QVector<double>& key, const QVector<double>& value,
                          const QVector<double>& keyErrorMinus, const QVector<double>& keyErrorPlus,
                          const QVector<double>& valueErrorMinus,
                          const QVector<double>& valueErrorPlus);
    void setLineStyle(LineStyle ls);
    void setScatterStyle(const QCPScatterStyle& style);
    void setErrorType(ErrorType errorType);
    void setErrorPen(const QPen& pen);
    void setErrorBarSize(double size);
    void setErrorBarSkipSymbol(bool enabled);
    void setChannelFillGraph(QCPGraph* targetGraph);
    void setAdaptiveSampling(bool enabled);

    // non-property methods:
    void addData(const QCPDataMap& dataMap);
    void addData(const QCPData& data);
    void addData(double key, double value);
    void addData(const QVector<double>& keys, const QVector<double>& values);
    void removeDataBefore(double key);
    void removeDataAfter(double key);
    void removeData(double fromKey, double toKey);
    void removeData(double key);

    // reimplemented virtual methods:
    virtual void   clearData();
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;
    using QCPAbstractPlottable::rescaleAxes;
    using QCPAbstractPlottable::rescaleKeyAxis;
    using QCPAbstractPlottable::rescaleValueAxis;
    void rescaleAxes(bool onlyEnlarge,
                     bool includeErrorBars) const; // overloads base class interface
    void rescaleKeyAxis(bool onlyEnlarge,
                        bool includeErrorBars) const; // overloads base class interface
    void rescaleValueAxis(bool onlyEnlarge,
                          bool includeErrorBars) const; // overloads base class interface

protected:
    // property members:
    QCPDataMap*        mData;
    QPen               mErrorPen;
    LineStyle          mLineStyle;
    QCPScatterStyle    mScatterStyle;
    ErrorType          mErrorType;
    double             mErrorBarSize;
    bool               mErrorBarSkipSymbol;
    QPointer<QCPGraph> mChannelFillGraph;
    bool               mAdaptiveSampling;

    // reimplemented virtual methods:
    virtual void     draw(QCPPainter* painter);
    virtual void     drawLegendIcon(QCPPainter* painter, const QRectF& rect) const;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain,
                                 bool includeErrors) const; // overloads base class interface
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain,
                                   bool includeErrors) const; // overloads base class interface

    // introduced virtual methods:
    virtual void drawFill(QCPPainter* painter, QVector<QPointF>* lineData) const;
    virtual void drawScatterPlot(QCPPainter* painter, QVector<QCPData>* scatterData) const;
    virtual void drawLinePlot(QCPPainter* painter, QVector<QPointF>* lineData) const;
    virtual void drawImpulsePlot(QCPPainter* painter, QVector<QPointF>* lineData) const;

    // non-virtual methods:
    void getPreparedData(QVector<QCPData>* lineData, QVector<QCPData>* scatterData) const;
    void getPlotData(QVector<QPointF>* lineData, QVector<QCPData>* scatterData) const;
    void getScatterPlotData(QVector<QCPData>* scatterData) const;
    void getLinePlotData(QVector<QPointF>* linePixelData, QVector<QCPData>* scatterData) const;
    void getStepLeftPlotData(QVector<QPointF>* linePixelData, QVector<QCPData>* scatterData) const;
    void getStepRightPlotData(QVector<QPointF>* linePixelData, QVector<QCPData>* scatterData) const;
    void getStepCenterPlotData(QVector<QPointF>* linePixelData,
                               QVector<QCPData>* scatterData) const;
    void getImpulsePlotData(QVector<QPointF>* linePixelData, QVector<QCPData>* scatterData) const;
    void drawError(QCPPainter* painter, double x, double y, const QCPData& data) const;
    void getVisibleDataBounds(QCPDataMap::const_iterator& lower,
                              QCPDataMap::const_iterator& upper) const;
    int  countDataInBounds(const QCPDataMap::const_iterator& lower,
                           const QCPDataMap::const_iterator& upper, int maxCount) const;
    void addFillBasePoints(QVector<QPointF>* lineData) const;
    void removeFillBasePoints(QVector<QPointF>* lineData) const;
    QPointF         lowerFillBasePoint(double lowerKey) const;
    QPointF         upperFillBasePoint(double upperKey) const;
    const QPolygonF getChannelFillPolygon(const QVector<QPointF>* lineData) const;
    int             findIndexBelowX(const QVector<QPointF>* data, double x) const;
    int             findIndexAboveX(const QVector<QPointF>* data, double x) const;
    int             findIndexBelowY(const QVector<QPointF>* data, double y) const;
    int             findIndexAboveY(const QVector<QPointF>* data, double y) const;
    double          pointDistance(const QPointF& pixelPoint) const;

    friend class QCustomPlot;
    friend class QCPLegend;
};

/*! \file */

class QCP_LIB_DECL QCPCurveData
{
public:
    QCPCurveData();
    QCPCurveData(double t, double key, double value);
    double t, key, value;
};
Q_DECLARE_TYPEINFO(QCPCurveData, Q_MOVABLE_TYPE);

/*! \typedef QCPCurveDataMap
  Container for storing \ref QCPCurveData items in a sorted fashion. The key of the map
  is the t member of the QCPCurveData instance.

  This is the container in which QCPCurve holds its data.
  \see QCPCurveData, QCPCurve::setData
*/

typedef QMap<double, QCPCurveData>                QCPCurveDataMap;
typedef QMapIterator<double, QCPCurveData>        QCPCurveDataMapIterator;
typedef QMutableMapIterator<double, QCPCurveData> QCPCurveDataMutableMapIterator;

class QCP_LIB_DECL QCPCurve : public QCPAbstractPlottable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QCPScatterStyle scatterStyle READ scatterStyle WRITE setScatterStyle)
    Q_PROPERTY(LineStyle lineStyle READ lineStyle WRITE setLineStyle)
    /// \endcond
public:
    /*!
      Defines how the curve's line is represented visually in the plot. The line is drawn with the
      current pen of the curve (\ref setPen).
      \see setLineStyle
    */
    enum LineStyle {
        lsNone ///< No line is drawn between data points (e.g. only scatters)
        ,
        lsLine ///< Data points are connected with a straight line
    };
    explicit QCPCurve(QCPAxis* keyAxis, QCPAxis* valueAxis);
    virtual ~QCPCurve();

    // getters:
    QCPCurveDataMap* data() const
    {
        return mData;
    }
    QCPScatterStyle scatterStyle() const
    {
        return mScatterStyle;
    }
    LineStyle lineStyle() const
    {
        return mLineStyle;
    }

    // setters:
    void setData(QCPCurveDataMap* data, bool copy = false);
    void setData(const QVector<double>& t, const QVector<double>& key,
                 const QVector<double>& value);
    void setData(const QVector<double>& key, const QVector<double>& value);
    void setScatterStyle(const QCPScatterStyle& style);
    void setLineStyle(LineStyle style);

    // non-property methods:
    void addData(const QCPCurveDataMap& dataMap);
    void addData(const QCPCurveData& data);
    void addData(double t, double key, double value);
    void addData(double key, double value);
    void addData(const QVector<double>& ts, const QVector<double>& keys,
                 const QVector<double>& values);
    void removeDataBefore(double t);
    void removeDataAfter(double t);
    void removeData(double fromt, double tot);
    void removeData(double t);

    // reimplemented virtual methods:
    virtual void   clearData();
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

protected:
    // property members:
    QCPCurveDataMap* mData;
    QCPScatterStyle  mScatterStyle;
    LineStyle        mLineStyle;

    // reimplemented virtual methods:
    virtual void     draw(QCPPainter* painter);
    virtual void     drawLegendIcon(QCPPainter* painter, const QRectF& rect) const;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;

    // introduced virtual methods:
    virtual void drawScatterPlot(QCPPainter* painter, const QVector<QPointF>* pointData) const;

    // non-virtual methods:
    void    getCurveData(QVector<QPointF>* lineData) const;
    int     getRegion(double x, double y, double rectLeft, double rectTop, double rectRight,
                      double rectBottom) const;
    QPointF getOptimizedPoint(int prevRegion, double prevKey, double prevValue, double key,
                              double value, double rectLeft, double rectTop, double rectRight,
                              double rectBottom) const;
    QVector<QPointF> getOptimizedCornerPoints(int prevRegion, int currentRegion, double prevKey,
                                              double prevValue, double key, double value,
                                              double rectLeft, double rectTop, double rectRight,
                                              double rectBottom) const;
    bool             mayTraverse(int prevRegion, int currentRegion) const;
    bool getTraverse(double prevKey, double prevValue, double key, double value, double rectLeft,
                     double rectTop, double rectRight, double rectBottom, QPointF& crossA,
                     QPointF& crossB) const;
    void getTraverseCornerPoints(int prevRegion, int currentRegion, double rectLeft, double rectTop,
                                 double rectRight, double rectBottom,
                                 QVector<QPointF>& beforeTraverse,
                                 QVector<QPointF>& afterTraverse) const;
    double pointDistance(const QPointF& pixelPoint) const;

    friend class QCustomPlot;
    friend class QCPLegend;
};

/*! \file */

class QCP_LIB_DECL QCPBarsGroup : public QObject
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(SpacingType spacingType READ spacingType WRITE setSpacingType)
    Q_PROPERTY(double spacing READ spacing WRITE setSpacing)
    /// \endcond
public:
    /*!
      Defines the ways the spacing between bars in the group can be specified. Thus it defines what
      the number passed to \ref setSpacing actually means.

      \see setSpacingType, setSpacing
    */
    enum SpacingType {
        stAbsolute ///< Bar spacing is in absolute pixels
        ,
        stAxisRectRatio ///< Bar spacing is given by a fraction of the axis rect size
        ,
        stPlotCoords ///< Bar spacing is in key coordinates and thus scales with the key axis range
    };
    QCPBarsGroup(QCustomPlot* parentPlot);
    ~QCPBarsGroup();

    // getters:
    SpacingType spacingType() const
    {
        return mSpacingType;
    }
    double spacing() const
    {
        return mSpacing;
    }

    // setters:
    void setSpacingType(SpacingType spacingType);
    void setSpacing(double spacing);

    // non-virtual methods:
    QList<QCPBars*> bars() const
    {
        return mBars;
    }
    QCPBars* bars(int index) const;
    int      size() const
    {
        return mBars.size();
    }
    bool isEmpty() const
    {
        return mBars.isEmpty();
    }
    void clear();
    bool contains(QCPBars* bars) const
    {
        return mBars.contains(bars);
    }
    void append(QCPBars* bars);
    void insert(int i, QCPBars* bars);
    void remove(QCPBars* bars);

protected:
    // non-property members:
    QCustomPlot*    mParentPlot;
    SpacingType     mSpacingType;
    double          mSpacing;
    QList<QCPBars*> mBars;

    // non-virtual methods:
    void registerBars(QCPBars* bars);
    void unregisterBars(QCPBars* bars);

    // virtual methods:
    double keyPixelOffset(const QCPBars* bars, double keyCoord);
    double getPixelSpacing(const QCPBars* bars, double keyCoord);

private:
    Q_DISABLE_COPY(QCPBarsGroup)

    friend class QCPBars;
};

class QCP_LIB_DECL QCPBarData
{
public:
    QCPBarData();
    QCPBarData(double key, double value);
    double key, value;
};
Q_DECLARE_TYPEINFO(QCPBarData, Q_MOVABLE_TYPE);

/*! \typedef QCPBarDataMap
  Container for storing \ref QCPBarData items in a sorted fashion. The key of the map
  is the key member of the QCPBarData instance.

  This is the container in which QCPBars holds its data.
  \see QCPBarData, QCPBars::setData
*/
typedef QMap<double, QCPBarData>                QCPBarDataMap;
typedef QMapIterator<double, QCPBarData>        QCPBarDataMapIterator;
typedef QMutableMapIterator<double, QCPBarData> QCPBarDataMutableMapIterator;

class QCP_LIB_DECL QCPBars : public QCPAbstractPlottable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(double width READ width WRITE setWidth)
    Q_PROPERTY(WidthType widthType READ widthType WRITE setWidthType)
    Q_PROPERTY(QCPBarsGroup* barsGroup READ barsGroup WRITE setBarsGroup)
    Q_PROPERTY(double baseValue READ baseValue WRITE setBaseValue)
    Q_PROPERTY(QCPBars* barBelow READ barBelow)
    Q_PROPERTY(QCPBars* barAbove READ barAbove)
    /// \endcond
public:
    /*!
      Defines the ways the width of the bar can be specified. Thus it defines what the number passed
      to \ref setWidth actually means.

      \see setWidthType, setWidth
    */
    enum WidthType {
        wtAbsolute ///< Bar width is in absolute pixels
        ,
        wtAxisRectRatio ///< Bar width is given by a fraction of the axis rect size
        ,
        wtPlotCoords ///< Bar width is in key coordinates and thus scales with the key axis range
    };
    Q_ENUMS(WidthType)

    explicit QCPBars(QCPAxis* keyAxis, QCPAxis* valueAxis);
    virtual ~QCPBars();

    // getters:
    double width() const
    {
        return mWidth;
    }
    WidthType widthType() const
    {
        return mWidthType;
    }
    QCPBarsGroup* barsGroup() const
    {
        return mBarsGroup;
    }
    double baseValue() const
    {
        return mBaseValue;
    }
    QCPBars* barBelow() const
    {
        return mBarBelow.data();
    }
    QCPBars* barAbove() const
    {
        return mBarAbove.data();
    }
    QCPBarDataMap* data() const
    {
        return mData;
    }

    // setters:
    void setWidth(double width);
    void setWidthType(WidthType widthType);
    void setBarsGroup(QCPBarsGroup* barsGroup);
    void setBaseValue(double baseValue);
    void setData(QCPBarDataMap* data, bool copy = false);
    void setData(const QVector<double>& key, const QVector<double>& value);

    // non-property methods:
    void moveBelow(QCPBars* bars);
    void moveAbove(QCPBars* bars);
    void addData(const QCPBarDataMap& dataMap);
    void addData(const QCPBarData& data);
    void addData(double key, double value);
    void addData(const QVector<double>& keys, const QVector<double>& values);
    void removeDataBefore(double key);
    void removeDataAfter(double key);
    void removeData(double fromKey, double toKey);
    void removeData(double key);

    // reimplemented virtual methods:
    virtual void   clearData();
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

protected:
    // property members:
    QCPBarDataMap*    mData;
    double            mWidth;
    WidthType         mWidthType;
    QCPBarsGroup*     mBarsGroup;
    double            mBaseValue;
    QPointer<QCPBars> mBarBelow, mBarAbove;

    // reimplemented virtual methods:
    virtual void     draw(QCPPainter* painter);
    virtual void     drawLegendIcon(QCPPainter* painter, const QRectF& rect) const;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;

    // non-virtual methods:
    void        getVisibleDataBounds(QCPBarDataMap::const_iterator& lower,
                                     QCPBarDataMap::const_iterator& upperEnd) const;
    QPolygonF   getBarPolygon(double key, double value) const;
    void        getPixelWidth(double key, double& lower, double& upper) const;
    double      getStackedBaseValue(double key, bool positive) const;
    static void connectBars(QCPBars* lower, QCPBars* upper);

    friend class QCustomPlot;
    friend class QCPLegend;
    friend class QCPBarsGroup;
};

/*! \file */

class QCP_LIB_DECL QCPStatisticalBox : public QCPAbstractPlottable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(double key READ key WRITE setKey)
    Q_PROPERTY(double minimum READ minimum WRITE setMinimum)
    Q_PROPERTY(double lowerQuartile READ lowerQuartile WRITE setLowerQuartile)
    Q_PROPERTY(double median READ median WRITE setMedian)
    Q_PROPERTY(double upperQuartile READ upperQuartile WRITE setUpperQuartile)
    Q_PROPERTY(double maximum READ maximum WRITE setMaximum)
    Q_PROPERTY(QVector<double> outliers READ outliers WRITE setOutliers)
    Q_PROPERTY(double width READ width WRITE setWidth)
    Q_PROPERTY(double whiskerWidth READ whiskerWidth WRITE setWhiskerWidth)
    Q_PROPERTY(QPen whiskerPen READ whiskerPen WRITE setWhiskerPen)
    Q_PROPERTY(QPen whiskerBarPen READ whiskerBarPen WRITE setWhiskerBarPen)
    Q_PROPERTY(QPen medianPen READ medianPen WRITE setMedianPen)
    Q_PROPERTY(QCPScatterStyle outlierStyle READ outlierStyle WRITE setOutlierStyle)
    /// \endcond
public:
    explicit QCPStatisticalBox(QCPAxis* keyAxis, QCPAxis* valueAxis);

    // getters:
    double key() const
    {
        return mKey;
    }
    double minimum() const
    {
        return mMinimum;
    }
    double lowerQuartile() const
    {
        return mLowerQuartile;
    }
    double median() const
    {
        return mMedian;
    }
    double upperQuartile() const
    {
        return mUpperQuartile;
    }
    double maximum() const
    {
        return mMaximum;
    }
    QVector<double> outliers() const
    {
        return mOutliers;
    }
    double width() const
    {
        return mWidth;
    }
    double whiskerWidth() const
    {
        return mWhiskerWidth;
    }
    QPen whiskerPen() const
    {
        return mWhiskerPen;
    }
    QPen whiskerBarPen() const
    {
        return mWhiskerBarPen;
    }
    QPen medianPen() const
    {
        return mMedianPen;
    }
    QCPScatterStyle outlierStyle() const
    {
        return mOutlierStyle;
    }

    // setters:
    void setKey(double key);
    void setMinimum(double value);
    void setLowerQuartile(double value);
    void setMedian(double value);
    void setUpperQuartile(double value);
    void setMaximum(double value);
    void setOutliers(const QVector<double>& values);
    void setData(double key, double minimum, double lowerQuartile, double median,
                 double upperQuartile, double maximum);
    void setWidth(double width);
    void setWhiskerWidth(double width);
    void setWhiskerPen(const QPen& pen);
    void setWhiskerBarPen(const QPen& pen);
    void setMedianPen(const QPen& pen);
    void setOutlierStyle(const QCPScatterStyle& style);

    // non-property methods:
    virtual void   clearData();
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

protected:
    // property members:
    QVector<double> mOutliers;
    double          mKey, mMinimum, mLowerQuartile, mMedian, mUpperQuartile, mMaximum;
    double          mWidth;
    double          mWhiskerWidth;
    QPen            mWhiskerPen, mWhiskerBarPen, mMedianPen;
    QCPScatterStyle mOutlierStyle;

    // reimplemented virtual methods:
    virtual void     draw(QCPPainter* painter);
    virtual void     drawLegendIcon(QCPPainter* painter, const QRectF& rect) const;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;

    // introduced virtual methods:
    virtual void drawQuartileBox(QCPPainter* painter, QRectF* quartileBox = 0) const;
    virtual void drawMedian(QCPPainter* painter) const;
    virtual void drawWhiskers(QCPPainter* painter) const;
    virtual void drawOutliers(QCPPainter* painter) const;

    friend class QCustomPlot;
    friend class QCPLegend;
};

class QCP_LIB_DECL QCPColorMapData
{
public:
    QCPColorMapData(int keySize, int valueSize, const QCPRange& keyRange,
                    const QCPRange& valueRange);
    ~QCPColorMapData();
    QCPColorMapData(const QCPColorMapData& other);
    QCPColorMapData& operator=(const QCPColorMapData& other);

    // getters:
    int keySize() const
    {
        return mKeySize;
    }
    int valueSize() const
    {
        return mValueSize;
    }
    QCPRange keyRange() const
    {
        return mKeyRange;
    }
    QCPRange valueRange() const
    {
        return mValueRange;
    }
    QCPRange dataBounds() const
    {
        return mDataBounds;
    }
    double data(double key, double value);
    double cell(int keyIndex, int valueIndex);

    // setters:
    void setSize(int keySize, int valueSize);
    void setKeySize(int keySize);
    void setValueSize(int valueSize);
    void setRange(const QCPRange& keyRange, const QCPRange& valueRange);
    void setKeyRange(const QCPRange& keyRange);
    void setValueRange(const QCPRange& valueRange);
    void setData(double key, double value, double z);
    void setCell(int keyIndex, int valueIndex, double z);

    // non-property methods:
    void recalculateDataBounds();
    void clear();
    void fill(double z);
    bool isEmpty() const
    {
        return mIsEmpty;
    }
    void coordToCell(double key, double value, int* keyIndex, int* valueIndex) const;
    void cellToCoord(int keyIndex, int valueIndex, double* key, double* value) const;

protected:
    // property members:
    int      mKeySize, mValueSize;
    QCPRange mKeyRange, mValueRange;
    bool     mIsEmpty;
    // non-property members:
    double*  mData;
    QCPRange mDataBounds;
    bool     mDataModified;

    friend class QCPColorMap;
};

class QCP_LIB_DECL QCPColorMap : public QCPAbstractPlottable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QCPRange dataRange READ dataRange WRITE setDataRange NOTIFY dataRangeChanged)
    Q_PROPERTY(QCPAxis::ScaleType dataScaleType READ dataScaleType WRITE setDataScaleType NOTIFY
                   dataScaleTypeChanged)
    Q_PROPERTY(QCPColorGradient gradient READ gradient WRITE setGradient NOTIFY gradientChanged)
    Q_PROPERTY(bool interpolate READ interpolate WRITE setInterpolate)
    Q_PROPERTY(bool tightBoundary READ tightBoundary WRITE setTightBoundary)
    Q_PROPERTY(QCPColorScale* colorScale READ colorScale WRITE setColorScale)
    /// \endcond
public:
    explicit QCPColorMap(QCPAxis* keyAxis, QCPAxis* valueAxis);
    virtual ~QCPColorMap();

    // getters:
    QCPColorMapData* data() const
    {
        return mMapData;
    }
    QCPRange dataRange() const
    {
        return mDataRange;
    }
    QCPAxis::ScaleType dataScaleType() const
    {
        return mDataScaleType;
    }
    bool interpolate() const
    {
        return mInterpolate;
    }
    bool tightBoundary() const
    {
        return mTightBoundary;
    }
    QCPColorGradient gradient() const
    {
        return mGradient;
    }
    QCPColorScale* colorScale() const
    {
        return mColorScale.data();
    }

    // setters:
    void        setData(QCPColorMapData* data, bool copy = false);
    Q_SLOT void setDataRange(const QCPRange& dataRange);
    Q_SLOT void setDataScaleType(QCPAxis::ScaleType scaleType);
    Q_SLOT void setGradient(const QCPColorGradient& gradient);
    void        setInterpolate(bool enabled);
    void        setTightBoundary(bool enabled);
    void        setColorScale(QCPColorScale* colorScale);

    // non-property methods:
    void        rescaleDataRange(bool recalculateDataBounds = false);
    Q_SLOT void updateLegendIcon(Qt::TransformationMode transformMode = Qt::SmoothTransformation,
                                 const QSize&           thumbSize     = QSize(32, 18));

    // reimplemented virtual methods:
    virtual void   clearData();
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

signals:
    void dataRangeChanged(QCPRange newRange);
    void dataScaleTypeChanged(QCPAxis::ScaleType scaleType);
    void gradientChanged(QCPColorGradient newGradient);

protected:
    // property members:
    QCPRange                mDataRange;
    QCPAxis::ScaleType      mDataScaleType;
    QCPColorMapData*        mMapData;
    QCPColorGradient        mGradient;
    bool                    mInterpolate;
    bool                    mTightBoundary;
    QPointer<QCPColorScale> mColorScale;
    // non-property members:
    QImage                  mMapImage, mUndersampledMapImage;
    QPixmap                 mLegendIcon;
    bool                    mMapImageInvalidated;

    // introduced virtual methods:
    virtual void updateMapImage();

    // reimplemented virtual methods:
    virtual void     draw(QCPPainter* painter);
    virtual void     drawLegendIcon(QCPPainter* painter, const QRectF& rect) const;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;

    friend class QCustomPlot;
    friend class QCPLegend;
};

/*! \file */

class QCP_LIB_DECL QCPFinancialData
{
public:
    QCPFinancialData();
    QCPFinancialData(double key, double open, double high, double low, double close);
    double key, open, high, low, close;
};
Q_DECLARE_TYPEINFO(QCPFinancialData, Q_MOVABLE_TYPE);

/*! \typedef QCPFinancialDataMap
  Container for storing \ref QCPFinancialData items in a sorted fashion. The key of the map
  is the key member of the QCPFinancialData instance.

  This is the container in which QCPFinancial holds its data.
  \see QCPFinancial, QCPFinancial::setData
*/
typedef QMap<double, QCPFinancialData>                QCPFinancialDataMap;
typedef QMapIterator<double, QCPFinancialData>        QCPFinancialDataMapIterator;
typedef QMutableMapIterator<double, QCPFinancialData> QCPFinancialDataMutableMapIterator;

class QCP_LIB_DECL QCPFinancial : public QCPAbstractPlottable
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(ChartStyle chartStyle READ chartStyle WRITE setChartStyle)
    Q_PROPERTY(double width READ width WRITE setWidth)
    Q_PROPERTY(bool twoColored READ twoColored WRITE setTwoColored)
    Q_PROPERTY(QBrush brushPositive READ brushPositive WRITE setBrushPositive)
    Q_PROPERTY(QBrush brushNegative READ brushNegative WRITE setBrushNegative)
    Q_PROPERTY(QPen penPositive READ penPositive WRITE setPenPositive)
    Q_PROPERTY(QPen penNegative READ penNegative WRITE setPenNegative)
    /// \endcond
public:
    /*!
      Defines the possible representations of OHLC data in the plot.

      \see setChartStyle
    */
    enum ChartStyle {
        csOhlc ///< Open-High-Low-Close bar representation
        ,
        csCandlestick ///< Candlestick representation
    };
    Q_ENUMS(ChartStyle)

    explicit QCPFinancial(QCPAxis* keyAxis, QCPAxis* valueAxis);
    virtual ~QCPFinancial();

    // getters:
    QCPFinancialDataMap* data() const
    {
        return mData;
    }
    ChartStyle chartStyle() const
    {
        return mChartStyle;
    }
    double width() const
    {
        return mWidth;
    }
    bool twoColored() const
    {
        return mTwoColored;
    }
    QBrush brushPositive() const
    {
        return mBrushPositive;
    }
    QBrush brushNegative() const
    {
        return mBrushNegative;
    }
    QPen penPositive() const
    {
        return mPenPositive;
    }
    QPen penNegative() const
    {
        return mPenNegative;
    }

    // setters:
    void setData(QCPFinancialDataMap* data, bool copy = false);
    void setData(const QVector<double>& key, const QVector<double>& open,
                 const QVector<double>& high, const QVector<double>& low,
                 const QVector<double>& close);
    void setChartStyle(ChartStyle style);
    void setWidth(double width);
    void setTwoColored(bool twoColored);
    void setBrushPositive(const QBrush& brush);
    void setBrushNegative(const QBrush& brush);
    void setPenPositive(const QPen& pen);
    void setPenNegative(const QPen& pen);

    // non-property methods:
    void addData(const QCPFinancialDataMap& dataMap);
    void addData(const QCPFinancialData& data);
    void addData(double key, double open, double high, double low, double close);
    void addData(const QVector<double>& key, const QVector<double>& open,
                 const QVector<double>& high, const QVector<double>& low,
                 const QVector<double>& close);
    void removeDataBefore(double key);
    void removeDataAfter(double key);
    void removeData(double fromKey, double toKey);
    void removeData(double key);

    // reimplemented virtual methods:
    virtual void   clearData();
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    // static methods:
    static QCPFinancialDataMap timeSeriesToOhlc(const QVector<double>& time,
                                                const QVector<double>& value, double timeBinSize,
                                                double timeBinOffset = 0);

protected:
    // property members:
    QCPFinancialDataMap* mData;
    ChartStyle           mChartStyle;
    double               mWidth;
    bool                 mTwoColored;
    QBrush               mBrushPositive, mBrushNegative;
    QPen                 mPenPositive, mPenNegative;

    // reimplemented virtual methods:
    virtual void     draw(QCPPainter* painter);
    virtual void     drawLegendIcon(QCPPainter* painter, const QRectF& rect) const;
    virtual QCPRange getKeyRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;
    virtual QCPRange getValueRange(bool& foundRange, SignDomain inSignDomain = sdBoth) const;

    // non-virtual methods:
    void drawOhlcPlot(QCPPainter* painter, const QCPFinancialDataMap::const_iterator& begin,
                      const QCPFinancialDataMap::const_iterator& end);
    void drawCandlestickPlot(QCPPainter* painter, const QCPFinancialDataMap::const_iterator& begin,
                             const QCPFinancialDataMap::const_iterator& end);
    double ohlcSelectTest(const QPointF& pos, const QCPFinancialDataMap::const_iterator& begin,
                          const QCPFinancialDataMap::const_iterator& end) const;
    double candlestickSelectTest(const QPointF&                             pos,
                                 const QCPFinancialDataMap::const_iterator& begin,
                                 const QCPFinancialDataMap::const_iterator& end) const;
    void   getVisibleDataBounds(QCPFinancialDataMap::const_iterator& lower,
                                QCPFinancialDataMap::const_iterator& upper) const;

    friend class QCustomPlot;
    friend class QCPLegend;
};

class QCP_LIB_DECL QCPItemStraightLine : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    /// \endcond
public:
    QCPItemStraightLine(QCustomPlot* parentPlot);
    virtual ~QCPItemStraightLine();

    // getters:
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }

    // setters;
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const point1;
    QCPItemPosition* const point2;

protected:
    // property members:
    QPen mPen, mSelectedPen;

    // reimplemented virtual methods:
    virtual void draw(QCPPainter* painter);

    // non-virtual methods:
    double distToStraightLine(const QVector2D& point1, const QVector2D& vec,
                              const QVector2D& point) const;
    QLineF getRectClippedStraightLine(const QVector2D& point1, const QVector2D& vec,
                                      const QRect& rect) const;
    QPen   mainPen() const;
};

class QCP_LIB_DECL QCPItemLine : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(QCPLineEnding head READ head WRITE setHead)
    Q_PROPERTY(QCPLineEnding tail READ tail WRITE setTail)
    /// \endcond
public:
    QCPItemLine(QCustomPlot* parentPlot);
    virtual ~QCPItemLine();

    // getters:
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    QCPLineEnding head() const
    {
        return mHead;
    }
    QCPLineEnding tail() const
    {
        return mTail;
    }

    // setters;
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);
    void setHead(const QCPLineEnding& head);
    void setTail(const QCPLineEnding& tail);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const start;
    QCPItemPosition* const end;

protected:
    // property members:
    QPen          mPen, mSelectedPen;
    QCPLineEnding mHead, mTail;

    // reimplemented virtual methods:
    virtual void draw(QCPPainter* painter);

    // non-virtual methods:
    QLineF getRectClippedLine(const QVector2D& start, const QVector2D& end,
                              const QRect& rect) const;
    QPen   mainPen() const;
};

class QCP_LIB_DECL QCPItemCurve : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(QCPLineEnding head READ head WRITE setHead)
    Q_PROPERTY(QCPLineEnding tail READ tail WRITE setTail)
    /// \endcond
public:
    QCPItemCurve(QCustomPlot* parentPlot);
    virtual ~QCPItemCurve();

    // getters:
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    QCPLineEnding head() const
    {
        return mHead;
    }
    QCPLineEnding tail() const
    {
        return mTail;
    }

    // setters;
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);
    void setHead(const QCPLineEnding& head);
    void setTail(const QCPLineEnding& tail);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const start;
    QCPItemPosition* const startDir;
    QCPItemPosition* const endDir;
    QCPItemPosition* const end;

protected:
    // property members:
    QPen          mPen, mSelectedPen;
    QCPLineEnding mHead, mTail;

    // reimplemented virtual methods:
    virtual void draw(QCPPainter* painter);

    // non-virtual methods:
    QPen mainPen() const;
};

class QCP_LIB_DECL QCPItemRect : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(QBrush brush READ brush WRITE setBrush)
    Q_PROPERTY(QBrush selectedBrush READ selectedBrush WRITE setSelectedBrush)
    /// \endcond
public:
    QCPItemRect(QCustomPlot* parentPlot);
    virtual ~QCPItemRect();

    // getters:
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    QBrush brush() const
    {
        return mBrush;
    }
    QBrush selectedBrush() const
    {
        return mSelectedBrush;
    }

    // setters;
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);
    void setBrush(const QBrush& brush);
    void setSelectedBrush(const QBrush& brush);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const topLeft;
    QCPItemPosition* const bottomRight;
    QCPItemAnchor* const   top;
    QCPItemAnchor* const   topRight;
    QCPItemAnchor* const   right;
    QCPItemAnchor* const   bottom;
    QCPItemAnchor* const   bottomLeft;
    QCPItemAnchor* const   left;

protected:
    enum AnchorIndex { aiTop, aiTopRight, aiRight, aiBottom, aiBottomLeft, aiLeft };

    // property members:
    QPen   mPen, mSelectedPen;
    QBrush mBrush, mSelectedBrush;

    // reimplemented virtual methods:
    virtual void    draw(QCPPainter* painter);
    virtual QPointF anchorPixelPoint(int anchorId) const;

    // non-virtual methods:
    QPen   mainPen() const;
    QBrush mainBrush() const;
};

class QCP_LIB_DECL QCPItemText : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QColor color READ color WRITE setColor)
    Q_PROPERTY(QColor selectedColor READ selectedColor WRITE setSelectedColor)
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(QBrush brush READ brush WRITE setBrush)
    Q_PROPERTY(QBrush selectedBrush READ selectedBrush WRITE setSelectedBrush)
    Q_PROPERTY(QFont font READ font WRITE setFont)
    Q_PROPERTY(QFont selectedFont READ selectedFont WRITE setSelectedFont)
    Q_PROPERTY(QString text READ text WRITE setText)
    Q_PROPERTY(Qt::Alignment positionAlignment READ positionAlignment WRITE setPositionAlignment)
    Q_PROPERTY(Qt::Alignment textAlignment READ textAlignment WRITE setTextAlignment)
    Q_PROPERTY(double rotation READ rotation WRITE setRotation)
    Q_PROPERTY(QMargins padding READ padding WRITE setPadding)
    /// \endcond
public:
    QCPItemText(QCustomPlot* parentPlot);
    virtual ~QCPItemText();

    // getters:
    QColor color() const
    {
        return mColor;
    }
    QColor selectedColor() const
    {
        return mSelectedColor;
    }
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    QBrush brush() const
    {
        return mBrush;
    }
    QBrush selectedBrush() const
    {
        return mSelectedBrush;
    }
    QFont font() const
    {
        return mFont;
    }
    QFont selectedFont() const
    {
        return mSelectedFont;
    }
    QString text() const
    {
        return mText;
    }
    Qt::Alignment positionAlignment() const
    {
        return mPositionAlignment;
    }
    Qt::Alignment textAlignment() const
    {
        return mTextAlignment;
    }
    double rotation() const
    {
        return mRotation;
    }
    QMargins padding() const
    {
        return mPadding;
    }

    // setters;
    void setColor(const QColor& color);
    void setSelectedColor(const QColor& color);
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);
    void setBrush(const QBrush& brush);
    void setSelectedBrush(const QBrush& brush);
    void setFont(const QFont& font);
    void setSelectedFont(const QFont& font);
    void setText(const QString& text);
    void setPositionAlignment(Qt::Alignment alignment);
    void setTextAlignment(Qt::Alignment alignment);
    void setRotation(double degrees);
    void setPadding(const QMargins& padding);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const position;
    QCPItemAnchor* const   topLeft;
    QCPItemAnchor* const   top;
    QCPItemAnchor* const   topRight;
    QCPItemAnchor* const   right;
    QCPItemAnchor* const   bottomRight;
    QCPItemAnchor* const   bottom;
    QCPItemAnchor* const   bottomLeft;
    QCPItemAnchor* const   left;

protected:
    enum AnchorIndex {
        aiTopLeft,
        aiTop,
        aiTopRight,
        aiRight,
        aiBottomRight,
        aiBottom,
        aiBottomLeft,
        aiLeft
    };

    // property members:
    QColor        mColor, mSelectedColor;
    QPen          mPen, mSelectedPen;
    QBrush        mBrush, mSelectedBrush;
    QFont         mFont, mSelectedFont;
    QString       mText;
    Qt::Alignment mPositionAlignment;
    Qt::Alignment mTextAlignment;
    double        mRotation;
    QMargins      mPadding;

    // reimplemented virtual methods:
    virtual void    draw(QCPPainter* painter);
    virtual QPointF anchorPixelPoint(int anchorId) const;

    // non-virtual methods:
    QPointF getTextDrawPoint(const QPointF& pos, const QRectF& rect,
                             Qt::Alignment positionAlignment) const;
    QFont   mainFont() const;
    QColor  mainColor() const;
    QPen    mainPen() const;
    QBrush  mainBrush() const;
};

class QCP_LIB_DECL QCPItemEllipse : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(QBrush brush READ brush WRITE setBrush)
    Q_PROPERTY(QBrush selectedBrush READ selectedBrush WRITE setSelectedBrush)
    /// \endcond
public:
    QCPItemEllipse(QCustomPlot* parentPlot);
    virtual ~QCPItemEllipse();

    // getters:
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    QBrush brush() const
    {
        return mBrush;
    }
    QBrush selectedBrush() const
    {
        return mSelectedBrush;
    }

    // setters;
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);
    void setBrush(const QBrush& brush);
    void setSelectedBrush(const QBrush& brush);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const topLeft;
    QCPItemPosition* const bottomRight;
    QCPItemAnchor* const   topLeftRim;
    QCPItemAnchor* const   top;
    QCPItemAnchor* const   topRightRim;
    QCPItemAnchor* const   right;
    QCPItemAnchor* const   bottomRightRim;
    QCPItemAnchor* const   bottom;
    QCPItemAnchor* const   bottomLeftRim;
    QCPItemAnchor* const   left;
    QCPItemAnchor* const   center;

protected:
    enum AnchorIndex {
        aiTopLeftRim,
        aiTop,
        aiTopRightRim,
        aiRight,
        aiBottomRightRim,
        aiBottom,
        aiBottomLeftRim,
        aiLeft,
        aiCenter
    };

    // property members:
    QPen   mPen, mSelectedPen;
    QBrush mBrush, mSelectedBrush;

    // reimplemented virtual methods:
    virtual void    draw(QCPPainter* painter);
    virtual QPointF anchorPixelPoint(int anchorId) const;

    // non-virtual methods:
    QPen   mainPen() const;
    QBrush mainBrush() const;
};

class QCP_LIB_DECL QCPItemPixmap : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPixmap pixmap READ pixmap WRITE setPixmap)
    Q_PROPERTY(bool scaled READ scaled WRITE setScaled)
    Q_PROPERTY(Qt::AspectRatioMode aspectRatioMode READ aspectRatioMode)
    Q_PROPERTY(Qt::TransformationMode transformationMode READ transformationMode)
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    /// \endcond
public:
    QCPItemPixmap(QCustomPlot* parentPlot);
    virtual ~QCPItemPixmap();

    // getters:
    QPixmap pixmap() const
    {
        return mPixmap;
    }
    bool scaled() const
    {
        return mScaled;
    }
    Qt::AspectRatioMode aspectRatioMode() const
    {
        return mAspectRatioMode;
    }
    Qt::TransformationMode transformationMode() const
    {
        return mTransformationMode;
    }
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }

    // setters;
    void setPixmap(const QPixmap& pixmap);
    void setScaled(bool scaled, Qt::AspectRatioMode aspectRatioMode = Qt::KeepAspectRatio,
                   Qt::TransformationMode transformationMode = Qt::SmoothTransformation);
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const topLeft;
    QCPItemPosition* const bottomRight;
    QCPItemAnchor* const   top;
    QCPItemAnchor* const   topRight;
    QCPItemAnchor* const   right;
    QCPItemAnchor* const   bottom;
    QCPItemAnchor* const   bottomLeft;
    QCPItemAnchor* const   left;

protected:
    enum AnchorIndex { aiTop, aiTopRight, aiRight, aiBottom, aiBottomLeft, aiLeft };

    // property members:
    QPixmap                mPixmap;
    QPixmap                mScaledPixmap;
    bool                   mScaled;
    bool                   mScaledPixmapInvalidated;
    Qt::AspectRatioMode    mAspectRatioMode;
    Qt::TransformationMode mTransformationMode;
    QPen                   mPen, mSelectedPen;

    // reimplemented virtual methods:
    virtual void    draw(QCPPainter* painter);
    virtual QPointF anchorPixelPoint(int anchorId) const;

    // non-virtual methods:
    void  updateScaledPixmap(QRect finalRect = QRect(), bool flipHorz = false,
                             bool flipVert = false);
    QRect getFinalRect(bool* flippedHorz = 0, bool* flippedVert = 0) const;
    QPen  mainPen() const;
};

class QCP_LIB_DECL QCPItemTracer : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(QBrush brush READ brush WRITE setBrush)
    Q_PROPERTY(QBrush selectedBrush READ selectedBrush WRITE setSelectedBrush)
    Q_PROPERTY(double size READ size WRITE setSize)
    Q_PROPERTY(TracerStyle style READ style WRITE setStyle)
    Q_PROPERTY(QCPGraph* graph READ graph WRITE setGraph)
    Q_PROPERTY(double graphKey READ graphKey WRITE setGraphKey)
    Q_PROPERTY(bool interpolating READ interpolating WRITE setInterpolating)
    /// \endcond
public:
    /*!
      The different visual appearances a tracer item can have. Some styles size may be controlled
      with \ref setSize.

      \see setStyle
    */
    enum TracerStyle {
        tsNone ///< The tracer is not visible
        ,
        tsPlus ///< A plus shaped crosshair with limited size
        ,
        tsCrosshair ///< A plus shaped crosshair which spans the complete axis rect
        ,
        tsCircle ///< A circle
        ,
        tsSquare ///< A square
    };
    Q_ENUMS(TracerStyle)

    QCPItemTracer(QCustomPlot* parentPlot);
    virtual ~QCPItemTracer();

    // getters:
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    QBrush brush() const
    {
        return mBrush;
    }
    QBrush selectedBrush() const
    {
        return mSelectedBrush;
    }
    double size() const
    {
        return mSize;
    }
    TracerStyle style() const
    {
        return mStyle;
    }
    QCPGraph* graph() const
    {
        return mGraph;
    }
    double graphKey() const
    {
        return mGraphKey;
    }
    bool interpolating() const
    {
        return mInterpolating;
    }

    // setters;
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);
    void setBrush(const QBrush& brush);
    void setSelectedBrush(const QBrush& brush);
    void setSize(double size);
    void setStyle(TracerStyle style);
    void setGraph(QCPGraph* graph);
    void setGraphKey(double key);
    void setInterpolating(bool enabled);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    // non-virtual methods:
    void updatePosition();

    QCPItemPosition* const position;

protected:
    // property members:
    QPen        mPen, mSelectedPen;
    QBrush      mBrush, mSelectedBrush;
    double      mSize;
    TracerStyle mStyle;
    QCPGraph*   mGraph;
    double      mGraphKey;
    bool        mInterpolating;

    // reimplemented virtual methods:
    virtual void draw(QCPPainter* painter);

    // non-virtual methods:
    QPen   mainPen() const;
    QBrush mainBrush() const;
};

class QCP_LIB_DECL QCPItemBracket : public QCPAbstractItem
{
    Q_OBJECT
    /// \cond INCLUDE_QPROPERTIES
    Q_PROPERTY(QPen pen READ pen WRITE setPen)
    Q_PROPERTY(QPen selectedPen READ selectedPen WRITE setSelectedPen)
    Q_PROPERTY(double length READ length WRITE setLength)
    Q_PROPERTY(BracketStyle style READ style WRITE setStyle)
    /// \endcond
public:
    enum BracketStyle {
        bsSquare ///< A brace with angled edges
        ,
        bsRound ///< A brace with round edges
        ,
        bsCurly ///< A curly brace
        ,
        bsCalligraphic ///< A curly brace with varying stroke width giving a calligraphic impression
    };

    QCPItemBracket(QCustomPlot* parentPlot);
    virtual ~QCPItemBracket();

    // getters:
    QPen pen() const
    {
        return mPen;
    }
    QPen selectedPen() const
    {
        return mSelectedPen;
    }
    double length() const
    {
        return mLength;
    }
    BracketStyle style() const
    {
        return mStyle;
    }

    // setters;
    void setPen(const QPen& pen);
    void setSelectedPen(const QPen& pen);
    void setLength(double length);
    void setStyle(BracketStyle style);

    // reimplemented virtual methods:
    virtual double selectTest(const QPointF& pos, bool onlySelectable, QVariant* details = 0) const;

    QCPItemPosition* const left;
    QCPItemPosition* const right;
    QCPItemAnchor* const   center;

protected:
    // property members:
    enum AnchorIndex { aiCenter };
    QPen         mPen, mSelectedPen;
    double       mLength;
    BracketStyle mStyle;

    // reimplemented virtual methods:
    virtual void    draw(QCPPainter* painter);
    virtual QPointF anchorPixelPoint(int anchorId) const;

    // non-virtual methods:
    QPen mainPen() const;
};

#endif // QCUSTOMPLOT_H