Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 174 insertions, 0 deletions

diff --git a/chart2/source/view/main/PolarLabelPositionHelper.cxx b/chart2/source/view/main/PolarLabelPositionHelper.cxx
new file mode 100644
index 000000000..a3e9a7cd9
--- /dev/null
+++ b/chart2/source/view/main/PolarLabelPositionHelper.cxx
@@ -0,0 +1,174 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <PolarLabelPositionHelper.hxx>
+#include <PlottingPositionHelper.hxx>
+#include <basegfx/vector/b2dvector.hxx>
+#include <basegfx/vector/b2ivector.hxx>
+
+#include <com/sun/star/chart/DataLabelPlacement.hpp>
+
+namespace chart
+{
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::chart2;
+
+PolarLabelPositionHelper::PolarLabelPositionHelper(
+                    PolarPlottingPositionHelper* pPosHelper
+                    , sal_Int32 nDimensionCount
+                    , const uno::Reference< drawing::XShapes >& xLogicTarget
+                    , ShapeFactory* pShapeFactory )
+                    : LabelPositionHelper( nDimensionCount, xLogicTarget, pShapeFactory )
+                    , m_pPosHelper(pPosHelper)
+{
+}
+
+PolarLabelPositionHelper::~PolarLabelPositionHelper()
+{
+}
+
+awt::Point PolarLabelPositionHelper::getLabelScreenPositionAndAlignmentForLogicValues(
+        LabelAlignment& rAlignment
+        , double fLogicValueOnAngleAxis
+        , double fLogicValueOnRadiusAxis
+        , double fLogicZ
+        , sal_Int32 nScreenValueOffsetInRadiusDirection ) const
+{
+    double fUnitCircleAngleDegree = m_pPosHelper->transformToAngleDegree( fLogicValueOnAngleAxis );
+    double fUnitCircleRadius = m_pPosHelper->transformToRadius( fLogicValueOnRadiusAxis );
+
+    return getLabelScreenPositionAndAlignmentForUnitCircleValues(
+           rAlignment, css::chart::DataLabelPlacement::OUTSIDE
+           , fUnitCircleAngleDegree, 0.0
+           , fUnitCircleRadius, fUnitCircleRadius, fLogicZ, nScreenValueOffsetInRadiusDirection );
+}
+
+awt::Point PolarLabelPositionHelper::getLabelScreenPositionAndAlignmentForUnitCircleValues(
+        LabelAlignment& rAlignment, sal_Int32 nLabelPlacement
+        , double fUnitCircleStartAngleDegree, double fUnitCircleWidthAngleDegree
+        , double fUnitCircleInnerRadius, double fUnitCircleOuterRadius
+        , double fLogicZ
+        , sal_Int32 nScreenValueOffsetInRadiusDirection ) const
+{
+    bool bCenter = (nLabelPlacement != css::chart::DataLabelPlacement::OUTSIDE)
+                && (nLabelPlacement != css::chart::DataLabelPlacement::INSIDE);
+
+    double fAngleDegree = fUnitCircleStartAngleDegree + fUnitCircleWidthAngleDegree/2.0;
+    double fRadius = 0.0;
+    if( !bCenter ) //e.g. for pure pie chart(one ring only) or for angle axis of polar coordinate system
+        fRadius = fUnitCircleOuterRadius;
+    else
+        fRadius = fUnitCircleInnerRadius + (fUnitCircleOuterRadius-fUnitCircleInnerRadius)/2.0 ;
+
+    awt::Point aRet( transformSceneToScreenPosition(
+        m_pPosHelper->transformUnitCircleToScene( fAngleDegree, fRadius, fLogicZ+0.5 ) ) );
+
+    if(m_nDimensionCount==3 && nLabelPlacement == css::chart::DataLabelPlacement::OUTSIDE)
+    {
+        //check whether the upper or the downer edge is more distant from the center
+        //take the farthest point to put the label to
+
+        awt::Point aP0( transformSceneToScreenPosition(
+            m_pPosHelper->transformUnitCircleToScene( 0, 0, fLogicZ ) ) );
+        awt::Point aP1(aRet);
+        awt::Point aP2( transformSceneToScreenPosition(
+            m_pPosHelper->transformUnitCircleToScene( fAngleDegree, fRadius, fLogicZ-0.5 ) ) );
+
+        ::basegfx::B2DVector aV0( aP0.X, aP0.Y );
+        ::basegfx::B2DVector aV1( aP1.X, aP1.Y );
+        ::basegfx::B2DVector aV2( aP2.X, aP2.Y );
+
+        double fL1 = ::basegfx::B2DVector(aV1-aV0).getLength();
+        double fL2 = ::basegfx::B2DVector(aV2-aV0).getLength();
+
+        if(fL2>fL1)
+            aRet = aP2;
+
+        //calculate new angle for alignment
+        double fDX = aRet.X-aP0.X;
+        double fDY = aRet.Y-aP0.Y;
+        fDY*=-1.0;//drawing layer has inverse y values
+        if( fDX != 0.0 )
+        {
+            fAngleDegree = basegfx::rad2deg(atan(fDY/fDX));
+            if(fDX<0.0)
+                fAngleDegree+=180.0;
+        }
+        else
+        {
+            if(fDY>0.0)
+                fAngleDegree = 90.0;
+            else
+                fAngleDegree = 270.0;
+        }
+    }
+    //set LabelAlignment
+    if( !bCenter )
+    {
+        // tdf#123504: both 0 and 360 are valid and different values here!
+        while (fAngleDegree > 360.0)
+            fAngleDegree -= 360.0;
+        while (fAngleDegree < 0.0)
+            fAngleDegree += 360.0;
+
+        bool bOutside = nLabelPlacement == css::chart::DataLabelPlacement::OUTSIDE;
+
+        if(fAngleDegree==0.0)
+            rAlignment = LABEL_ALIGN_CENTER;
+        else if(fAngleDegree<=22.5)
+            rAlignment = bOutside ? LABEL_ALIGN_RIGHT : LABEL_ALIGN_LEFT;
+        else if(fAngleDegree<67.5)
+            rAlignment = bOutside ? LABEL_ALIGN_RIGHT_TOP : LABEL_ALIGN_LEFT_BOTTOM;
+        else if(fAngleDegree<112.5)
+            rAlignment = bOutside ? LABEL_ALIGN_TOP : LABEL_ALIGN_BOTTOM;
+        else if(fAngleDegree<=157.5)
+            rAlignment = bOutside ? LABEL_ALIGN_LEFT_TOP : LABEL_ALIGN_RIGHT_BOTTOM;
+        else if(fAngleDegree<=202.5)
+            rAlignment = bOutside ? LABEL_ALIGN_LEFT : LABEL_ALIGN_RIGHT;
+        else if(fAngleDegree<247.5)
+            rAlignment = bOutside ? LABEL_ALIGN_LEFT_BOTTOM : LABEL_ALIGN_RIGHT_TOP;
+        else if(fAngleDegree<292.5)
+            rAlignment = bOutside ? LABEL_ALIGN_BOTTOM : LABEL_ALIGN_TOP;
+        else if(fAngleDegree<337.5)
+            rAlignment = bOutside ? LABEL_ALIGN_RIGHT_BOTTOM : LABEL_ALIGN_LEFT_TOP;
+        else
+            rAlignment = bOutside ? LABEL_ALIGN_RIGHT : LABEL_ALIGN_LEFT;
+    }
+    else
+    {
+        rAlignment = LABEL_ALIGN_CENTER;
+    }
+
+    //add a scaling independent Offset if requested
+    if( nScreenValueOffsetInRadiusDirection != 0)
+    {
+        awt::Point aOrigin( transformSceneToScreenPosition(
+            m_pPosHelper->transformUnitCircleToScene( 0.0, 0.0, fLogicZ+0.5 ) ) );
+        basegfx::B2IVector aDirection( aRet.X- aOrigin.X, aRet.Y- aOrigin.Y );
+        aDirection.setLength(nScreenValueOffsetInRadiusDirection);
+        aRet.X += aDirection.getX();
+        aRet.Y += aDirection.getY();
+    }
+
+    return aRet;
+}
+
+} //namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */