/**************************************************************
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the 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
            com::sun::star::drawing::LineCap        meLineCap;              // BUTT, ROUND, or SQUARE

			ImpLineAttribute(
                const basegfx::BColor& rColor,
				double fWidth,
				basegfx::B2DLineJoin aB2DLineJoin,
                com::sun::star::drawing::LineCap aLineCap)
			:	mnRefCount(0),
                maColor(rColor),
                mfWidth(fWidth),
                meLineJoin(aB2DLineJoin),
                meLineCap(aLineCap)
			{
			}

			// data read access
			const basegfx::BColor& getColor() const { return maColor; }
			double getWidth() const { return mfWidth; }
			basegfx::B2DLineJoin getLineJoin() const { return meLineJoin; }
            com::sun::star::drawing::LineCap getLineCap() const { return meLineCap; }

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

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

                if(!pDefault)
                {
                    pDefault = new ImpLineAttribute(
                        basegfx::BColor(),
                        0.0,
                        basegfx::B2DLINEJOIN_ROUND,
                        com::sun::star::drawing::LineCap_BUTT);

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

                return pDefault;
            }
		};

        LineAttribute::LineAttribute(
            const basegfx::BColor& rColor,
			double fWidth,
			basegfx::B2DLineJoin aB2DLineJoin,
            com::sun::star::drawing::LineCap aLineCap)
		:	mpLineAttribute(
                new ImpLineAttribute(
                    rColor,
                    fWidth,
                    aB2DLineJoin,
                    aLineCap))
		{
		}

		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();
        }

        com::sun::star::drawing::LineCap LineAttribute::getLineCap() const
        {
            return mpLineAttribute->getLineCap();
        }

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

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