/* -*- 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 "DragMethod_PieSegment.hxx"
#include <DrawViewWrapper.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 <tools/diagnose_ex.h>

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 Reference< frame::XModel >& 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 )
{
    OUString 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()
{
}
void DragMethod_PieSegment::TakeSdrDragComment(OUString& rStr) const
{
    rStr = SchResId(STR_STATUS_PIE_SEGMENT_EXPLODED);
    rStr = rStr.replaceFirst( "%PERCENTVALUE", OUString::number( static_cast<sal_Int32>((m_fAdditionalOffset+m_fInitialOffset)*100.0) ));
}
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) )
    {
        //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<long>(aNewPosVector.getX()), static_cast<long>(aNewPosVector.getY()) );
        if( aNewPos != DragStat().GetNow() )
        {
            Hide();
            DragStat().NextMove( aNewPos );
            Show();
        }
    }
}
bool DragMethod_PieSegment::EndSdrDrag(bool /*bCopy*/)
{
    Hide();

    try
    {
        Reference< frame::XModel > 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()
{
    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 )
    {
        const basegfx::B2DPolyPolygon aNewPolyPolygon(pObj->TakeXorPoly());
        addSdrDragEntry(std::unique_ptr<SdrDragEntry>(new SdrDragEntryPolyPolygon(aNewPolyPolygon)));
    }
}
} //namespace chart

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