/*************************************************************************
 *
 * 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_drawinglayer.hxx"

#include <drawinglayer/attribute/linestartendattribute.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace attribute
	{
		class ImpLineStartEndAttribute
		{
		public:
			// refcounter
			sal_uInt32								mnRefCount;

            // data definitions
			double									mfWidth;				// absolute line StartEndGeometry base width
			basegfx::B2DPolyPolygon					maPolyPolygon;			// the StartEndGeometry PolyPolygon

			// bitfield
			unsigned								mbCentered : 1;			// use centered to ineStart/End point?

			ImpLineStartEndAttribute(
				double fWidth, 
				const basegfx::B2DPolyPolygon& rPolyPolygon, 
				bool bCentered)
			:	mnRefCount(0),
				mfWidth(fWidth),
				maPolyPolygon(rPolyPolygon),
				mbCentered(bCentered)
			{
			}

			// data read access
			double getWidth() const { return mfWidth; }
			const basegfx::B2DPolyPolygon& getB2DPolyPolygon() const { return maPolyPolygon; }
			bool isCentered() const { return mbCentered; }

            bool operator==(const ImpLineStartEndAttribute& rCandidate) const
			{
				return (basegfx::fTools::equal(getWidth(), rCandidate.getWidth())
					&& getB2DPolyPolygon() == rCandidate.getB2DPolyPolygon()
					&& isCentered() == rCandidate.isCentered());
			}

            static ImpLineStartEndAttribute* get_global_default()
            {
                static ImpLineStartEndAttribute* pDefault = 0;

                if(!pDefault)
                {
                    pDefault = new ImpLineStartEndAttribute(
                        0.0,
                        basegfx::B2DPolyPolygon(),
                        false);

                    // never delete; start with RefCount 1, not 0
    			    pDefault->mnRefCount++;
                }

                return pDefault;
            }
        };

        LineStartEndAttribute::LineStartEndAttribute(
			double fWidth, 
			const basegfx::B2DPolyPolygon& rPolyPolygon, 
			bool bCentered)
		:	mpLineStartEndAttribute(new ImpLineStartEndAttribute(
                fWidth, rPolyPolygon, bCentered))
		{
		}

		LineStartEndAttribute::LineStartEndAttribute()
        :	mpLineStartEndAttribute(ImpLineStartEndAttribute::get_global_default())
		{
			mpLineStartEndAttribute->mnRefCount++;
		}

        LineStartEndAttribute::LineStartEndAttribute(const LineStartEndAttribute& rCandidate)
		:	mpLineStartEndAttribute(rCandidate.mpLineStartEndAttribute)
		{
			mpLineStartEndAttribute->mnRefCount++;
		}

		LineStartEndAttribute::~LineStartEndAttribute()
		{
			if(mpLineStartEndAttribute->mnRefCount)
			{
				mpLineStartEndAttribute->mnRefCount--;
			}
			else
			{
				delete mpLineStartEndAttribute;
			}
		}

        bool LineStartEndAttribute::isDefault() const
        {
            return mpLineStartEndAttribute == ImpLineStartEndAttribute::get_global_default();
        }

        LineStartEndAttribute& LineStartEndAttribute::operator=(const LineStartEndAttribute& rCandidate)
		{
			if(rCandidate.mpLineStartEndAttribute != mpLineStartEndAttribute)
			{
				if(mpLineStartEndAttribute->mnRefCount)
				{
					mpLineStartEndAttribute->mnRefCount--;
				}
				else
				{
					delete mpLineStartEndAttribute;
				}
				
				mpLineStartEndAttribute = rCandidate.mpLineStartEndAttribute;
				mpLineStartEndAttribute->mnRefCount++;
			}

			return *this;
		}

		bool LineStartEndAttribute::operator==(const LineStartEndAttribute& rCandidate) const
		{
			if(rCandidate.mpLineStartEndAttribute == mpLineStartEndAttribute)
			{
				return true;
			}

			if(rCandidate.isDefault() != isDefault())
			{
				return false;
			}

			return (*rCandidate.mpLineStartEndAttribute == *mpLineStartEndAttribute);
		}

		double LineStartEndAttribute::getWidth() const 
        { 
            return mpLineStartEndAttribute->getWidth(); 
        }

		const basegfx::B2DPolyPolygon& LineStartEndAttribute::getB2DPolyPolygon() const 
        { 
            return mpLineStartEndAttribute->getB2DPolyPolygon(); 
        }

		bool LineStartEndAttribute::isCentered() const 
        { 
            return mpLineStartEndAttribute->isCentered(); 
        }

        bool LineStartEndAttribute::isActive() const 
        { 
            return (0.0 != getWidth() 
                && 0 != getB2DPolyPolygon().count() 
                && 0 != getB2DPolyPolygon().getB2DPolygon(0).count()); 
        }
	} // end of namespace attribute
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////
// eof
