chart2/source/view/inc/PolarLabelPositionHelper.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include "LabelPositionHelper.hxx"
  23 #include <com/sun/star/awt/Point.hpp>
  24
  25 namespace chart
  26 {
  27
  28 class PolarPlottingPositionHelper;
  29
  30 class PolarLabelPositionHelper final : public LabelPositionHelper
  31 {
  32 public:
  33     PolarLabelPositionHelper(
  34         PolarPlottingPositionHelper* pPosHelper
  35         , sal_Int32 nDimensionCount
  36         , const rtl::Reference<SvxShapeGroupAnyD>& xLogicTarget );
  37     virtual ~PolarLabelPositionHelper() override;
  38
  39     css::awt::Point getLabelScreenPositionAndAlignmentForLogicValues(
  40                         LabelAlignment& rAlignment
  41                         , double fLogicValueOnAngleAxis
  42                         , double fLogicValueOnRadiusAxis
  43                         , double fLogicZ
  44                         , sal_Int32 nScreenValueOffsetInRadiusDirection ) const;
  45
  46     /** Calculate the anchor point position for a text label.
  47      *  When the requested label placement is of `INSIDE` or `OUTSIDE` type the
  48      *  returned anchor point for the text label is the middle point of the
  49      *  outer arc for the given slice; when the requested label placement is of
  50      *  `CENTER` type the returned anchor point for the text label is the
  51      *  middle point of the line segment bisecting the slice.
  52      *  The text alignment is always centered when the requested label
  53      *  placement is of `CENTER` type else it is dependent on the value of the
  54      *  angle defined by the horizontal axis and the ray bisecting the slice.
  55      *
  56      */
  57     css::awt::Point getLabelScreenPositionAndAlignmentForUnitCircleValues(
  58                         LabelAlignment& rAlignment, sal_Int32 nLabelPlacement /*see css::chart::DataLabelPlacement*/
  59                         , double fUnitCircleStartAngleDegree, double fUnitCircleWidthAngleDegree
  60                         , double fUnitCircleInnerRadius, double fUnitCircleOuterRadius
  61                         , double fLogicZ
  62                         , sal_Int32 nScreenValueOffsetInRadiusDirection
  63                         , const ::basegfx::B3DVector& aOffset = ::basegfx::B3DVector()) const;
  64
  65 private:
  66     PolarPlottingPositionHelper*    m_pPosHelper;
  67 };
  68
  69 } //namespace chart
  70
  71 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */