chart2/source/view/charttypes/PieChart.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  14  *   ownership. The ASF licenses this file to you under the Apache
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
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  19
  20 #ifndef INCLUDED_CHART2_SOURCE_VIEW_CHARTTYPES_PIECHART_HXX
  21 #define INCLUDED_CHART2_SOURCE_VIEW_CHARTTYPES_PIECHART_HXX
  22
  23 #include "VSeriesPlotter.hxx"
  24 #include <basegfx/vector/b2dvector.hxx>
  25 #include <basegfx/range/b2irectangle.hxx>
  26
  27 namespace chart
  28 {
  29 class PiePositionHelper;
  30
  31 class PieChart : public VSeriesPlotter
  32 {
  33     struct ShapeParam;
  34
  35 public:
  36     PieChart( const ::com::sun::star::uno::Reference<
  37             ::com::sun::star::chart2::XChartType >& xChartTypeModel
  38             , sal_Int32 nDimensionCount, bool bExcludingPositioning );
  39     virtual ~PieChart();
  40
  41     /** This method creates all shapes needed for representing the pie chart.
  42      */
  43     virtual void createShapes() SAL_OVERRIDE;
  44     virtual void rearrangeLabelToAvoidOverlapIfRequested( const ::com::sun::star::awt::Size& rPageSize ) SAL_OVERRIDE;
  45
  46     virtual void setScales( const ::std::vector< ExplicitScaleData >& rScales, bool bSwapXAndYAxis ) SAL_OVERRIDE;
  47     virtual void addSeries( VDataSeries* pSeries, sal_Int32 zSlot = -1, sal_Int32 xSlot = -1,sal_Int32 ySlot = -1 ) SAL_OVERRIDE;
  48
  49     virtual ::com::sun::star::drawing::Direction3D  getPreferredDiagramAspectRatio() const SAL_OVERRIDE;
  50     virtual bool keepAspectRatio() const SAL_OVERRIDE;
  51     virtual bool shouldSnapRectToUsedArea() SAL_OVERRIDE;
  52
  53     //MinimumAndMaximumSupplier
  54     virtual double getMinimumX() SAL_OVERRIDE;
  55     virtual double getMaximumX() SAL_OVERRIDE;
  56     virtual double getMinimumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) SAL_OVERRIDE;
  57     virtual double getMaximumYInRange( double fMinimumX, double fMaximumX, sal_Int32 nAxisIndex ) SAL_OVERRIDE;
  58
  59     virtual bool isExpandBorderToIncrementRhythm( sal_Int32 nDimensionIndex ) SAL_OVERRIDE;
  60     virtual bool isExpandIfValuesCloseToBorder( sal_Int32 nDimensionIndex ) SAL_OVERRIDE;
  61     virtual bool isExpandWideValuesToZero( sal_Int32 nDimensionIndex ) SAL_OVERRIDE;
  62     virtual bool isExpandNarrowValuesTowardZero( sal_Int32 nDimensionIndex ) SAL_OVERRIDE;
  63     virtual bool isSeparateStackingForDifferentSigns( sal_Int32 nDimensionIndex ) SAL_OVERRIDE;
  64
  65 private: //methods
  66     //no default constructor
  67     PieChart();
  68
  69     css::uno::Reference<css::drawing::XShape>
  70         createDataPoint(
  71             const css::uno::Reference<css::drawing::XShapes>& xTarget,
  72             const css::uno::Reference<css::beans::XPropertySet>& xObjectProperties,
  73             tPropertyNameValueMap* pOverWritePropertiesMap,
  74             const ShapeParam& rParam );
  75
  76     /** This method creates a text shape for a label of a data point.
  77      *
  78      *  @param xTextTarget
  79      *      where to append the new created text shape.
  80      *  @param rSeries
  81      *      the data series, the data point belongs to.
  82      *  @param nPointIndex
  83      *      the index of the data point the label is related to.
  84      *  @param rParam
  85      *      ShapeParam object.
  86      */
  87     void createTextLabelShape(
  88         const css::uno::Reference<css::drawing::XShapes>& xTextTarget,
  89         VDataSeries& rSeries, sal_Int32 nPointIndex, ShapeParam& rParam );
  90
  91     /** This method sets `m_fMaxOffset` to the maximum `Offset` property and
  92      *  returns it. There is a `Offset` property for each entry in a data
  93      *  series, moreover there exists a shared `Offset` property attached to
  94      *  the whole data series. The `Offset` property represents the
  95      *  relative distance offset of a slice from the pie center.
  96      *  The shared property is used for exploded pie chart, while the property
  97      *  attached to single data series entries is used for manual dragging of
  98      *  a slice.
  99      *  `m_fMaxOffset` is used by `PiePositionHelper::getInnerAndOuterRadius`.
 100      *  Note that only the `Offset` properties of the first (x slot) data series
 101      *  and its entries are utilized for computing the maximum offset.
 102      */
 103     double              getMaxOffset();
 104     bool                detectLabelOverlapsAndMove(const ::com::sun::star::awt::Size& rPageSize);//returns true when there might be more to do
 105     void                resetLabelPositionsToPreviousState();
 106 struct PieLabelInfo;
 107     bool                tryMoveLabels( PieLabelInfo* pFirstBorder, PieLabelInfo* pSecondBorder
 108                                 , PieLabelInfo* pCenter, bool bSingleCenter, bool& rbAlternativeMoveDirection
 109                                 , const ::com::sun::star::awt::Size& rPageSize );
 110
 111     bool                performLabelBestFitInnerPlacement(ShapeParam& rShapeParam, PieLabelInfo& rPieLabelInfo);
 112     static bool         performLabelBestFitOuterPlacement(ShapeParam& rShapeParam, PieLabelInfo& rPieLabelInfo);
 113     void                performLabelBestFit(ShapeParam& rShapeParam, PieLabelInfo& rPieLabelInfo);
 114
 115 private: //member
 116     PiePositionHelper*    m_pPosHelper;
 117     bool                  m_bUseRings;
 118     bool                  m_bSizeExcludesLabelsAndExplodedSegments;
 119
 120     struct PieLabelInfo
 121     {
 122         PieLabelInfo();
 123         bool moveAwayFrom( const PieLabelInfo* pFix, const ::com::sun::star::awt::Size& rPageSize
 124             , bool bMoveHalfWay, bool bMoveClockwise, bool bAlternativeMoveDirection );
 125
 126         ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XShape > xTextShape;
 127         ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XShape > xLabelGroupShape;
 128         ::basegfx::B2IVector aFirstPosition;
 129         ::basegfx::B2IVector aOrigin;
 130         double fValue;
 131         bool bMovementAllowed;
 132         bool bMoved;
 133         ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XShapes > xTextTarget;
 134         PieLabelInfo* pPrevious;
 135         PieLabelInfo* pNext;
 136         ::com::sun::star::awt::Point aPreviousPosition;
 137     };
 138
 139     ::std::vector< PieLabelInfo > m_aLabelInfoList;
 140
 141     double m_fMaxOffset;    /// cached max offset value (init'ed to NaN)
 142 };
 143 } //namespace chart
 144 #endif
 145
 146 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */