PieChart.hxx

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#pragma once
 
#include <memory>
#include <VSeriesPlotter.hxx>
#include <basegfx/vector/b2ivector.hxx>
#include <com/sun/star/awt/Point.hpp>
 
namespace chart
{
class PiePositionHelper;
 
class PieChart : public VSeriesPlotter
{
    struct ShapeParam;
 
public:
    PieChart() = delete;
 
    PieChart( const rtl::Reference< ::chart::ChartType >& xChartTypeModel
            , sal_Int32 nDimensionCount, bool bExcludingPositioning );
    virtual ~PieChart() override;
 
    virtual void createShapes() override;
    virtual void rearrangeLabelToAvoidOverlapIfRequested( const css::awt::Size& rPageSize ) override;
 
    virtual void setScales( std::vector< ExplicitScaleData >&& rScales, bool bSwapXAndYAxis ) override;
    virtual void addSeries( std::unique_ptr<VDataSeries> pSeries, sal_Int32 zSlot, sal_Int32 xSlot, sal_Int32 ySlot ) override;
 
    virtual css::drawing::Direction3D  getPreferredDiagramAspectRatio() const override;
    virtual bool shouldSnapRectToUsedArea() override;
 
    //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 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;
 
private: //methods
    rtl::Reference<SvxShape>
        createDataPoint(
            const rtl::Reference<SvxShapeGroupAnyD>& xTarget,
            const css::uno::Reference<css::beans::XPropertySet>& xObjectProperties,
            const ShapeParam& rParam,
            const sal_Int32 nPointCount,
            const bool bConcentricExplosion);
 
    void createTextLabelShape(
        const rtl::Reference<SvxShapeGroupAnyD>& xTextTarget,
        VDataSeries& rSeries, sal_Int32 nPointIndex, ShapeParam& rParam );
 
    double              getMaxOffset();
    bool                detectLabelOverlapsAndMove(const css::awt::Size& rPageSize);//returns true when there might be more to do
    void                resetLabelPositionsToPreviousState();
struct PieLabelInfo;
    bool                tryMoveLabels( PieLabelInfo const * pFirstBorder, PieLabelInfo const * pSecondBorder
                                , PieLabelInfo* pCenter, bool bSingleCenter, bool& rbAlternativeMoveDirection
                                , const css::awt::Size& rPageSize );
 
    bool                performLabelBestFitInnerPlacement( ShapeParam& rShapeParam
                                , PieLabelInfo const & rPieLabelInfo );
 
private: //member
    std::unique_ptr<PiePositionHelper>
                          m_pPosHelper;
    bool                  m_bUseRings;
    bool                  m_bSizeExcludesLabelsAndExplodedSegments;
 
    struct PieLabelInfo
    {
        PieLabelInfo();
        bool moveAwayFrom( const PieLabelInfo* pFix, const css::awt::Size& rPageSize
            , bool bMoveHalfWay, bool bMoveClockwise );
 
        rtl::Reference< SvxShapeText > xTextShape;
        rtl::Reference< SvxShapeGroupAnyD > xLabelGroupShape;
        ::basegfx::B2IVector aFirstPosition;
        ::basegfx::B2IVector aOuterPosition;
        ::basegfx::B2IVector aOrigin;
        double fValue;
        bool bMovementAllowed;
        bool bMoved;
        bool bShowLeaderLine;
        rtl::Reference<SvxShapeGroupAnyD> xTextTarget;
        PieLabelInfo* pPrevious;
        PieLabelInfo* pNext;
        css::awt::Point aPreviousPosition;
    };
 
    std::vector< PieLabelInfo > m_aLabelInfoList;
 
    double m_fMaxOffset;    
};
} //namespace chart
 
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