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Diffstat (limited to 'chart2/source/view/main/PolarLabelPositionHelper.cxx')
| -rw-r--r-- | chart2/source/view/main/PolarLabelPositionHelper.cxx | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/chart2/source/view/main/PolarLabelPositionHelper.cxx b/chart2/source/view/main/PolarLabelPositionHelper.cxx new file mode 100644 index 000000000000..8e5402b48d63 --- /dev/null +++ b/chart2/source/view/main/PolarLabelPositionHelper.cxx @@ -0,0 +1,188 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_chart2.hxx" + +#include "PolarLabelPositionHelper.hxx" +#include "PlottingPositionHelper.hxx" +#include "CommonConverters.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( pPosHelper, 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, ::com::sun::star::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 != ::com::sun::star::chart::DataLabelPlacement::OUTSIDE) + && (nLabelPlacement != ::com::sun::star::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 polyar coordinate system + fRadius = fUnitCircleOuterRadius; + else + fRadius = fUnitCircleInnerRadius + (fUnitCircleOuterRadius-fUnitCircleInnerRadius)/2.0 ; + + awt::Point aRet( this->transformSceneToScreenPosition( + m_pPosHelper->transformUnitCircleToScene( fAngleDegree, fRadius, fLogicZ+0.5 ) ) ); + + if(3==m_nDimensionCount && nLabelPlacement == ::com::sun::star::chart::DataLabelPlacement::OUTSIDE) + { + //check wether the upper or the downer edge is more distant from the center + //take the farest point to put the label to + + awt::Point aP0( this->transformSceneToScreenPosition( + m_pPosHelper->transformUnitCircleToScene( 0, 0, fLogicZ ) ) ); + awt::Point aP1(aRet); + awt::Point aP2( this->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 = atan(fDY/fDX)*180.0/F_PI; + if(fDX<0.0) + fAngleDegree+=180.0; + } + else + { + if(fDY>0.0) + fAngleDegree = 90.0; + else + fAngleDegree = 270.0; + } + } + //------------------------------ + //set LabelAlignment + if( !bCenter ) + { + while(fAngleDegree>360.0) + fAngleDegree-=360.0; + while(fAngleDegree<0.0) + fAngleDegree+=360.0; + + bool bOutside = nLabelPlacement == ::com::sun::star::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( this->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 +//............................................................................. |