188 lines
7.5 KiB
C++
188 lines
7.5 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_chart2.hxx"
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#include "PolarLabelPositionHelper.hxx"
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#include "PlottingPositionHelper.hxx"
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#include "CommonConverters.hxx"
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#include <basegfx/vector/b2dvector.hxx>
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#include <basegfx/vector/b2ivector.hxx>
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#include <com/sun/star/chart/DataLabelPlacement.hpp>
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//.............................................................................
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namespace chart
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{
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//.............................................................................
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using namespace ::com::sun::star;
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using namespace ::com::sun::star::chart2;
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PolarLabelPositionHelper::PolarLabelPositionHelper(
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PolarPlottingPositionHelper* pPosHelper
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, sal_Int32 nDimensionCount
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, const uno::Reference< drawing::XShapes >& xLogicTarget
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, ShapeFactory* pShapeFactory )
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: LabelPositionHelper( pPosHelper, nDimensionCount, xLogicTarget, pShapeFactory )
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, m_pPosHelper(pPosHelper)
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{
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}
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PolarLabelPositionHelper::~PolarLabelPositionHelper()
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{
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}
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awt::Point PolarLabelPositionHelper::getLabelScreenPositionAndAlignmentForLogicValues(
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LabelAlignment& rAlignment
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, double fLogicValueOnAngleAxis
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, double fLogicValueOnRadiusAxis
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, double fLogicZ
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, sal_Int32 nScreenValueOffsetInRadiusDirection ) const
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{
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double fUnitCircleAngleDegree = m_pPosHelper->transformToAngleDegree( fLogicValueOnAngleAxis );
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double fUnitCircleRadius = m_pPosHelper->transformToRadius( fLogicValueOnRadiusAxis );
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return getLabelScreenPositionAndAlignmentForUnitCircleValues(
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rAlignment, ::com::sun::star::chart::DataLabelPlacement::OUTSIDE
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, fUnitCircleAngleDegree, 0.0
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, fUnitCircleRadius, fUnitCircleRadius, fLogicZ, nScreenValueOffsetInRadiusDirection );
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}
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awt::Point PolarLabelPositionHelper::getLabelScreenPositionAndAlignmentForUnitCircleValues(
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LabelAlignment& rAlignment, sal_Int32 nLabelPlacement
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, double fUnitCircleStartAngleDegree, double fUnitCircleWidthAngleDegree
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, double fUnitCircleInnerRadius, double fUnitCircleOuterRadius
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, double fLogicZ
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, sal_Int32 nScreenValueOffsetInRadiusDirection ) const
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{
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bool bCenter = (nLabelPlacement != ::com::sun::star::chart::DataLabelPlacement::OUTSIDE)
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&& (nLabelPlacement != ::com::sun::star::chart::DataLabelPlacement::INSIDE);
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double fAngleDegree = fUnitCircleStartAngleDegree + fUnitCircleWidthAngleDegree/2.0;
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double fRadius = 0.0;
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if( !bCenter ) //e.g. for pure pie chart(one ring only) or for angle axis of polyar coordinate system
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fRadius = fUnitCircleOuterRadius;
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else
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fRadius = fUnitCircleInnerRadius + (fUnitCircleOuterRadius-fUnitCircleInnerRadius)/2.0 ;
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awt::Point aRet( this->transformSceneToScreenPosition(
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m_pPosHelper->transformUnitCircleToScene( fAngleDegree, fRadius, fLogicZ+0.5 ) ) );
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if(3==m_nDimensionCount && nLabelPlacement == ::com::sun::star::chart::DataLabelPlacement::OUTSIDE)
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{
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//check wether the upper or the downer edge is more distant from the center
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//take the farest point to put the label to
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awt::Point aP0( this->transformSceneToScreenPosition(
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m_pPosHelper->transformUnitCircleToScene( 0, 0, fLogicZ ) ) );
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awt::Point aP1(aRet);
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awt::Point aP2( this->transformSceneToScreenPosition(
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m_pPosHelper->transformUnitCircleToScene( fAngleDegree, fRadius, fLogicZ-0.5 ) ) );
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::basegfx::B2DVector aV0( aP0.X, aP0.Y );
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::basegfx::B2DVector aV1( aP1.X, aP1.Y );
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::basegfx::B2DVector aV2( aP2.X, aP2.Y );
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double fL1 = ::basegfx::B2DVector(aV1-aV0).getLength();
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double fL2 = ::basegfx::B2DVector(aV2-aV0).getLength();
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if(fL2>fL1)
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aRet = aP2;
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//calculate new angle for alignment
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double fDX = aRet.X-aP0.X;
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double fDY = aRet.Y-aP0.Y;
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fDY*=-1.0;//drawing layer has inverse y values
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if( fDX != 0.0 )
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{
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fAngleDegree = atan(fDY/fDX)*180.0/F_PI;
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if(fDX<0.0)
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fAngleDegree+=180.0;
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}
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else
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{
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if(fDY>0.0)
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fAngleDegree = 90.0;
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else
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fAngleDegree = 270.0;
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}
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}
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//------------------------------
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//set LabelAlignment
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if( !bCenter )
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{
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while(fAngleDegree>360.0)
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fAngleDegree-=360.0;
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while(fAngleDegree<0.0)
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fAngleDegree+=360.0;
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bool bOutside = nLabelPlacement == ::com::sun::star::chart::DataLabelPlacement::OUTSIDE;
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if(fAngleDegree==0.0)
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rAlignment = LABEL_ALIGN_CENTER;
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else if(fAngleDegree<=22.5)
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rAlignment = bOutside ? LABEL_ALIGN_RIGHT : LABEL_ALIGN_LEFT;
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else if(fAngleDegree<67.5)
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rAlignment = bOutside ? LABEL_ALIGN_RIGHT_TOP : LABEL_ALIGN_LEFT_BOTTOM;
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else if(fAngleDegree<112.5)
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rAlignment = bOutside ? LABEL_ALIGN_TOP : LABEL_ALIGN_BOTTOM;
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else if(fAngleDegree<=157.5)
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rAlignment = bOutside ? LABEL_ALIGN_LEFT_TOP : LABEL_ALIGN_RIGHT_BOTTOM;
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else if(fAngleDegree<=202.5)
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rAlignment = bOutside ? LABEL_ALIGN_LEFT : LABEL_ALIGN_RIGHT;
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else if(fAngleDegree<247.5)
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rAlignment = bOutside ? LABEL_ALIGN_LEFT_BOTTOM : LABEL_ALIGN_RIGHT_TOP;
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else if(fAngleDegree<292.5)
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rAlignment = bOutside ? LABEL_ALIGN_BOTTOM : LABEL_ALIGN_TOP;
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else if(fAngleDegree<337.5)
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rAlignment = bOutside ? LABEL_ALIGN_RIGHT_BOTTOM : LABEL_ALIGN_LEFT_TOP;
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else
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rAlignment = bOutside ? LABEL_ALIGN_RIGHT : LABEL_ALIGN_LEFT;
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}
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else
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{
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rAlignment = LABEL_ALIGN_CENTER;
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}
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//add a scaling independent Offset if requested
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if( nScreenValueOffsetInRadiusDirection != 0)
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{
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awt::Point aOrigin( this->transformSceneToScreenPosition(
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m_pPosHelper->transformUnitCircleToScene( 0.0, 0.0, fLogicZ+0.5 ) ) );
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basegfx::B2IVector aDirection( aRet.X- aOrigin.X, aRet.Y- aOrigin.Y );
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aDirection.setLength(nScreenValueOffsetInRadiusDirection);
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aRet.X += aDirection.getX();
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aRet.Y += aDirection.getY();
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}
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return aRet;
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}
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//.............................................................................
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} //namespace chart
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//.............................................................................
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