MinimumAndMaximumSupplier.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once
 
#include <sal/types.h>
#include <tools/date.hxx>
#include <tools/long.hxx>
#include <set>
 
namespace chart
{
 
class MinimumAndMaximumSupplier
{
public:
    virtual double getMinimumX() = 0;
    virtual double getMaximumX() = 0;
 
    //problem y maybe not is always the second border to ask for
    virtual double getMinimumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) = 0;
    virtual double getMaximumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) = 0;
 
    //problem: z maybe not independent in future
    virtual double getMinimumZ() = 0;
    virtual double getMaximumZ() = 0;
 
    virtual bool isExpandBorderToIncrementRhythm( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isExpandIfValuesCloseToBorder( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isExpandWideValuesToZero( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isExpandNarrowValuesTowardZero( sal_Int32 nDimensionIndex ) = 0;
    virtual bool isSeparateStackingForDifferentSigns( sal_Int32 nDimensionIndex ) = 0;
 
    //return a constant out of css::chart::TimeUnit that allows to display the smallest distance between occurring dates
    virtual tools::Long calculateTimeResolutionOnXAxis() = 0;
    virtual void setTimeResolutionOnXAxis( tools::Long nTimeResolution, const Date& rNullDate ) = 0;
 
protected:
    ~MinimumAndMaximumSupplier() {}
};
 
class MergedMinimumAndMaximumSupplier final : public MinimumAndMaximumSupplier
{
public:
    MergedMinimumAndMaximumSupplier();
    virtual ~MergedMinimumAndMaximumSupplier();
 
    void addMinimumAndMaximumSupplier( MinimumAndMaximumSupplier* pMinimumAndMaximumSupplier );
    bool hasMinimumAndMaximumSupplier( MinimumAndMaximumSupplier* pMinimumAndMaximumSupplier );
    void clearMinimumAndMaximumSupplierList();
 
    //--MinimumAndMaximumSupplier
    virtual double getMinimumX() override;
    virtual double getMaximumX() override;
    virtual double getMinimumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) override;
    virtual double getMaximumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) override;
    virtual double getMinimumZ() override;
    virtual double getMaximumZ() override;
 
    virtual bool isExpandBorderToIncrementRhythm( sal_Int32 nDimensionIndex ) override;
    virtual bool isExpandIfValuesCloseToBorder( sal_Int32 nDimensionIndex ) override;
    virtual bool isExpandWideValuesToZero( sal_Int32 nDimensionIndex ) override;
    virtual bool isExpandNarrowValuesTowardZero( sal_Int32 nDimensionIndex ) override;
    virtual bool isSeparateStackingForDifferentSigns( sal_Int32 nDimensionIndex ) override;
 
    virtual tools::Long calculateTimeResolutionOnXAxis() override;
    virtual void setTimeResolutionOnXAxis( tools::Long nTimeResolution, const Date& rNullDate ) override;
 
private:
    typedef std::set< MinimumAndMaximumSupplier* > MinimumAndMaximumSupplierSet;
    MinimumAndMaximumSupplierSet m_aMinimumAndMaximumSupplierList;
};
 
} //namespace chart
 
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