DragMethod_PieSegment.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include "DragMethod_PieSegment.hxx"
#include <DrawViewWrapper.hxx>
#include <ChartModel.hxx>
#include <strings.hrc>
#include <ResId.hxx>
#include <ObjectIdentifier.hxx>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/awt/Point.hpp>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <comphelper/diagnose_ex.hxx>
 
namespace chart
{
 
using namespace ::com::sun::star;
using ::com::sun::star::uno::Reference;
using ::basegfx::B2DVector;
 
DragMethod_PieSegment::DragMethod_PieSegment( DrawViewWrapper& rDrawViewWrapper
                                             , const OUString& rObjectCID
                                             , const rtl::Reference<::chart::ChartModel>& xChartModel )
    : DragMethod_Base( rDrawViewWrapper, rObjectCID, xChartModel )
    , m_aStartVector(100.0,100.0)
    , m_fInitialOffset(0.0)
    , m_fAdditionalOffset(0.0)
    , m_aDragDirection(1000.0,1000.0)
    , m_fDragRange( 1.0 )
{
    std::u16string_view aParameter( ObjectIdentifier::getDragParameterString( m_aObjectCID ) );
 
    sal_Int32 nOffsetPercent(0);
    awt::Point aMinimumPosition(0,0);
    awt::Point aMaximumPosition(0,0);
 
    ObjectIdentifier::parsePieSegmentDragParameterString(
          aParameter, nOffsetPercent, aMinimumPosition, aMaximumPosition );
 
    m_fInitialOffset = nOffsetPercent / 100.0;
    if( m_fInitialOffset < 0.0 )
        m_fInitialOffset = 0.0;
    if( m_fInitialOffset > 1.0 )
        m_fInitialOffset = 1.0;
    B2DVector aMinVector( aMinimumPosition.X, aMinimumPosition.Y );
    B2DVector aMaxVector( aMaximumPosition.X, aMaximumPosition.Y );
    m_aDragDirection = aMaxVector - aMinVector;
    m_fDragRange = m_aDragDirection.scalar( m_aDragDirection );
    if( m_fDragRange == 0.0 )
        m_fDragRange = 1.0;
}
DragMethod_PieSegment::~DragMethod_PieSegment()
{
}
OUString DragMethod_PieSegment::GetSdrDragComment() const
{
    OUString aStr = SchResId(STR_STATUS_PIE_SEGMENT_EXPLODED);
    aStr = aStr.replaceFirst( "%PERCENTVALUE", OUString::number( static_cast<sal_Int32>((m_fAdditionalOffset+m_fInitialOffset)*100.0) ));
    return aStr;
}
bool DragMethod_PieSegment::BeginSdrDrag()
{
    Point aStart( DragStat().GetStart() );
    m_aStartVector = B2DVector( aStart.X(), aStart.Y() );
    Show();
    return true;
}
void DragMethod_PieSegment::MoveSdrDrag(const Point& rPnt)
{
    if( !DragStat().CheckMinMoved(rPnt) )
        return;
 
    //calculate new offset
    B2DVector aShiftVector( B2DVector( rPnt.X(), rPnt.Y() ) - m_aStartVector );
    m_fAdditionalOffset = m_aDragDirection.scalar( aShiftVector )/m_fDragRange; // projection
 
    if( m_fAdditionalOffset < -m_fInitialOffset )
        m_fAdditionalOffset = -m_fInitialOffset;
    else if( m_fAdditionalOffset > (1.0-m_fInitialOffset) )
        m_fAdditionalOffset = 1.0 - m_fInitialOffset;
 
    B2DVector aNewPosVector = m_aStartVector + (m_aDragDirection * m_fAdditionalOffset);
    Point aNewPos( static_cast<tools::Long>(aNewPosVector.getX()), static_cast<tools::Long>(aNewPosVector.getY()) );
    if( aNewPos != DragStat().GetNow() )
    {
        Hide();
        DragStat().NextMove( aNewPos );
        Show();
    }
}
bool DragMethod_PieSegment::EndSdrDrag(bool /*bCopy*/)
{
    Hide();
 
    try
    {
        rtl::Reference<::chart::ChartModel> xChartModel( getChartModel() );
        if( xChartModel.is() )
        {
            Reference< beans::XPropertySet > xPointProperties(
                ObjectIdentifier::getObjectPropertySet( m_aObjectCID, xChartModel ) );
            if( xPointProperties.is() )
                xPointProperties->setPropertyValue( "Offset", uno::Any( m_fAdditionalOffset+m_fInitialOffset ));
        }
    }
    catch( const uno::Exception & )
    {
        DBG_UNHANDLED_EXCEPTION("chart2");
    }
 
    return true;
}
basegfx::B2DHomMatrix DragMethod_PieSegment::getCurrentTransformation() const
{
    basegfx::B2DHomMatrix aRetval;
 
    aRetval.translate(DragStat().GetDX(), DragStat().GetDY());
 
    return aRetval;
}
void DragMethod_PieSegment::createSdrDragEntries()
{
    SdrObject* pObj = m_rDrawViewWrapper.getSelectedObject();
    SdrPageView* pPV = m_rDrawViewWrapper.GetPageView();
 
    if( pObj && pPV )
    {
        basegfx::B2DPolyPolygon aNewPolyPolygon(pObj->TakeXorPoly());
        addSdrDragEntry(std::unique_ptr<SdrDragEntry>(new SdrDragEntryPolyPolygon(std::move(aNewPolyPolygon))));
    }
}
} //namespace chart
 
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