/* -*- 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 <drawinglayer/attribute/fillbitmapattribute.hxx>
#include <vcl/bitmapex.hxx>

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

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

            // data definitions
            BitmapEx                                maBitmapEx;
            basegfx::B2DPoint                       maTopLeft;
            basegfx::B2DVector                      maSize;

            // bitfield
            unsigned                                mbTiling : 1;

            ImpFillBitmapAttribute(
                const BitmapEx& rBitmapEx,
                const basegfx::B2DPoint& rTopLeft,
                const basegfx::B2DVector& rSize,
                bool bTiling)
            :   mnRefCount(0),
                maBitmapEx(rBitmapEx),
                maTopLeft(rTopLeft),
                maSize(rSize),
                mbTiling(bTiling)
            {
            }

            bool operator==(const ImpFillBitmapAttribute& rCandidate) const
            {
                return (maBitmapEx == rCandidate.maBitmapEx
                    && maTopLeft == rCandidate.maTopLeft
                    && maSize == rCandidate.maSize
                    && mbTiling == rCandidate.mbTiling);
            }

            // data read access
            const BitmapEx& getBitmapEx() const { return maBitmapEx; }
            const basegfx::B2DPoint& getTopLeft() const { return maTopLeft; }
            const basegfx::B2DVector& getSize() const { return maSize; }
            bool getTiling() const { return mbTiling; }

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

                if(!pDefault)
                {
                    pDefault = new ImpFillBitmapAttribute(
                        BitmapEx(),
                        basegfx::B2DPoint(),
                        basegfx::B2DVector(),
                        false);

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

                return pDefault;
            }
        };

        FillBitmapAttribute::FillBitmapAttribute(
            const BitmapEx& rBitmapEx,
            const basegfx::B2DPoint& rTopLeft,
            const basegfx::B2DVector& rSize,
            bool bTiling)
        :   mpFillBitmapAttribute(new ImpFillBitmapAttribute(
                rBitmapEx, rTopLeft, rSize, bTiling))
        {
        }

        FillBitmapAttribute::FillBitmapAttribute(const FillBitmapAttribute& rCandidate)
        :   mpFillBitmapAttribute(rCandidate.mpFillBitmapAttribute)
        {
            mpFillBitmapAttribute->mnRefCount++;
        }

        FillBitmapAttribute::~FillBitmapAttribute()
        {
            if(mpFillBitmapAttribute->mnRefCount)
            {
                mpFillBitmapAttribute->mnRefCount--;
            }
            else
            {
                delete mpFillBitmapAttribute;
            }
        }

        bool FillBitmapAttribute::isDefault() const
        {
            return mpFillBitmapAttribute == ImpFillBitmapAttribute::get_global_default();
        }

        FillBitmapAttribute& FillBitmapAttribute::operator=(const FillBitmapAttribute& rCandidate)
        {
            if(rCandidate.mpFillBitmapAttribute != mpFillBitmapAttribute)
            {
                if(mpFillBitmapAttribute->mnRefCount)
                {
                    mpFillBitmapAttribute->mnRefCount--;
                }
                else
                {
                    delete mpFillBitmapAttribute;
                }

                mpFillBitmapAttribute = rCandidate.mpFillBitmapAttribute;
                mpFillBitmapAttribute->mnRefCount++;
            }

            return *this;
        }

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

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

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

        const BitmapEx& FillBitmapAttribute::getBitmapEx() const
        {
            return mpFillBitmapAttribute->getBitmapEx();
        }

        const basegfx::B2DPoint& FillBitmapAttribute::getTopLeft() const
        {
            return mpFillBitmapAttribute->getTopLeft();
        }

        const basegfx::B2DVector& FillBitmapAttribute::getSize() const
        {
            return mpFillBitmapAttribute->getSize();
        }

        bool FillBitmapAttribute::getTiling() const
        {
            return mpFillBitmapAttribute->getTiling();
        }

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

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