/*************************************************************************
 *
 * 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/lineattribute.hxx>
#include <basegfx/color/bcolor.hxx>

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

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

            // data definitions
			basegfx::BColor							maColor;				// color
			double									mfWidth;				// absolute line width
			basegfx::B2DLineJoin					meLineJoin;				// type of LineJoin

			ImpLineAttribute(
                const basegfx::BColor& rColor,
				double fWidth,
				basegfx::B2DLineJoin aB2DLineJoin)
			:	mnRefCount(0),
                maColor(rColor),
                mfWidth(fWidth),
                meLineJoin(aB2DLineJoin)
			{
			}

			// data read access
			const basegfx::BColor& getColor() const { return maColor; }
			double getWidth() const { return mfWidth; }
			basegfx::B2DLineJoin getLineJoin() const { return meLineJoin; }

			bool operator==(const ImpLineAttribute& rCandidate) const
			{
				return (getColor() == rCandidate.getColor()
					&& getWidth() == rCandidate.getWidth()
					&& getLineJoin() == rCandidate.getLineJoin());
			}

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

                if(!pDefault)
                {
                    pDefault = new ImpLineAttribute(
                        basegfx::BColor(),
                        0.0,
                        basegfx::B2DLINEJOIN_ROUND);

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

                return pDefault;
            }
		};

        LineAttribute::LineAttribute(
            const basegfx::BColor& rColor,
			double fWidth,
			basegfx::B2DLineJoin aB2DLineJoin)
		:	mpLineAttribute(new ImpLineAttribute(
                rColor, fWidth, aB2DLineJoin))
		{
		}

		LineAttribute::LineAttribute()
        :	mpLineAttribute(ImpLineAttribute::get_global_default())
		{
			mpLineAttribute->mnRefCount++;
		}

        LineAttribute::LineAttribute(const LineAttribute& rCandidate)
		:	mpLineAttribute(rCandidate.mpLineAttribute)
		{
			mpLineAttribute->mnRefCount++;
		}

		LineAttribute::~LineAttribute()
		{
			if(mpLineAttribute->mnRefCount)
			{
				mpLineAttribute->mnRefCount--;
			}
			else
			{
				delete mpLineAttribute;
			}
		}

        bool LineAttribute::isDefault() const
        {
            return mpLineAttribute == ImpLineAttribute::get_global_default();
        }

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

			return *this;
		}

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

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

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

		const basegfx::BColor& LineAttribute::getColor() const 
		{ 
			return mpLineAttribute->getColor();
		}

		double LineAttribute::getWidth() const 
        { 
            return mpLineAttribute->getWidth(); 
        }
		
        basegfx::B2DLineJoin LineAttribute::getLineJoin() const 
        { 
            return mpLineAttribute->getLineJoin(); 
        }

    } // end of namespace attribute
} // end of namespace drawinglayer

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