chart2/source/view/inc/PolarLabelPositionHelper.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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   9  * This file incorporates work covered by the following license notice:
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  19
  20 #ifndef INCLUDED_CHART2_SOURCE_VIEW_INC_POLARLABELPOSITIONHELPER_HXX
  21 #define INCLUDED_CHART2_SOURCE_VIEW_INC_POLARLABELPOSITIONHELPER_HXX
  22
  23 #include "LabelPositionHelper.hxx"
  24 #include <com/sun/star/awt/Point.hpp>
  25 #include <com/sun/star/drawing/Position3D.hpp>
  26
  27 namespace chart
  28 {
  29
  30 /**
  31 */
  32 class PolarPlottingPositionHelper;
  33
  34 class PolarLabelPositionHelper : public LabelPositionHelper
  35 {
  36 public:
  37     PolarLabelPositionHelper(
  38         PolarPlottingPositionHelper* pPosHelper
  39         , sal_Int32 nDimensionCount
  40         , const ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XShapes >& xLogicTarget
  41         , AbstractShapeFactory* pShapeFactory );
  42     virtual ~PolarLabelPositionHelper();
  43
  44     ::com::sun::star::awt::Point getLabelScreenPositionAndAlignmentForLogicValues(
  45                         LabelAlignment& rAlignment
  46                         , double fLogicValueOnAngleAxis
  47                         , double fLogicValueOnRadiusAxis
  48                         , double fLogicZ
  49                         , sal_Int32 nScreenValueOffsetInRadiusDirection=0 ) const;
  50
  51     /** Calculate the anchor point position for a text label.
  52      *  When the requested label placement is of `INSIDE` or `OUTSIDE` type the
  53      *  returned anchor point for the text label is the middle point of the
  54      *  outer arc for the given slice; when the requested label placement is of
  55      *  `CENTER` type the returned anchor point for the text label is the
  56      *  middle point of the line segment bisecting the slice.
  57      *  The text alignment is always centered when the requested label
  58      *  placement is of `CENTER` type else it is dependent on the value of the
  59      *  angle defined by the horizontal axis and the ray bisecting the slice.
  60      *
  61      */
  62     ::com::sun::star::awt::Point getLabelScreenPositionAndAlignmentForUnitCircleValues(
  63                         LabelAlignment& rAlignment, sal_Int32 nLabelPlacement /*see ::com::sun::star::chart::DataLabelPlacement*/
  64                         , double fUnitCircleStartAngleDegree, double fUnitCircleWidthAngleDegree
  65                         , double fUnitCircleInnerRadius, double fUnitCircleOuterRadius
  66                         , double fLogicZ
  67                         , sal_Int32 nScreenValueOffsetInRadiusDirection=0 ) const;
  68
  69 private:
  70     PolarPlottingPositionHelper*    m_pPosHelper;
  71 };
  72
  73 } //namespace chart
  74 #endif
  75
  76 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */