chart2/source/view/inc/PolarLabelPositionHelper.hxx

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