CategoryPositionHelper.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once
 
namespace chart
{
class CategoryPositionHelper
{
public:
    CategoryPositionHelper(double fSeriesCount, double CategoryWidth = 1.0);
    virtual ~CategoryPositionHelper();
 
    CategoryPositionHelper(CategoryPositionHelper const&) = default;
    CategoryPositionHelper(CategoryPositionHelper&&) = default;
    CategoryPositionHelper& operator=(CategoryPositionHelper const&) = default;
    CategoryPositionHelper& operator=(CategoryPositionHelper&&) = default;
 
    double getScaledSlotWidth() const;
    virtual double getScaledSlotPos(double fCategoryX, double fSeriesNumber) const;
    void setCategoryWidth(double fCategoryWidth);
 
    //Distance between two neighboring bars in same category, seen relative to width of the bar
    void setInnerDistance(double fInnerDistance);
 
    //Distance between two neighboring bars in different category, seen relative to width of the bar:
    void setOuterDistance(double fOuterDistance);
 
protected:
    double m_fSeriesCount;
    double m_fCategoryWidth;
    //Distance between two neighboring bars in same category, seen relative to width of the bar:
    double
        m_fInnerDistance; //[-1,1] m_fInnerDistance=1 --> distance == width; m_fInnerDistance=-1-->all rects are painted on the same position
    //Distance between two neighboring bars in different category, seen relative to width of the bar:
    double m_fOuterDistance; //>=0 m_fOuterDistance=1 --> distance == width
};
 
} //namespace chart
 
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