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

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

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

            // data definitions
			Bitmap									maBitmap;
			basegfx::B2DVector						maSize;
			basegfx::B2DVector						maOffset;
			basegfx::B2DVector						maOffsetPosition;
			basegfx::B2DVector						maRectPoint;

			// bitfield
			unsigned								mbTiling : 1;
			unsigned								mbStretch : 1;
			unsigned								mbLogSize : 1;

			ImpSdrFillBitmapAttribute(
				const Bitmap& rBitmap, 
                const basegfx::B2DVector& rSize, 
                const basegfx::B2DVector& rOffset,
				const basegfx::B2DVector& rOffsetPosition, 
                const basegfx::B2DVector& rRectPoint,
				bool bTiling, 
                bool bStretch, 
                bool bLogSize)
		    :	mnRefCount(0),
		    	maBitmap(rBitmap),
			    maSize(rSize),
			    maOffset(rOffset),
			    maOffsetPosition(rOffsetPosition),
			    maRectPoint(rRectPoint),
			    mbTiling(bTiling),
			    mbStretch(bStretch),
			    mbLogSize(bLogSize)
		    {
		    }

			// data read access
            const Bitmap& getBitmap() const { return maBitmap; }
            const basegfx::B2DVector& getSize() const { return maSize; }
            const basegfx::B2DVector& getOffset() const { return maOffset; }
            const basegfx::B2DVector& getOffsetPosition() const { return maOffsetPosition; }
            const basegfx::B2DVector& getRectPoint() const { return maRectPoint; }
            bool getTiling() const { return mbTiling; }
            bool getStretch() const { return mbStretch; }
            bool getLogSize() const { return mbLogSize; }

            bool operator==(const ImpSdrFillBitmapAttribute& rCandidate) const
            {
			    return (getBitmap() == rCandidate.getBitmap()
				    && getSize() == rCandidate.getSize()
				    && getOffset() == rCandidate.getOffset()
				    && getOffsetPosition() == rCandidate.getOffsetPosition()
				    && getRectPoint() == rCandidate.getRectPoint()
				    && getTiling() == rCandidate.getTiling() 
				    && getStretch() == rCandidate.getStretch() 
				    && getLogSize() == rCandidate.getLogSize());
            }
            
            static ImpSdrFillBitmapAttribute* get_global_default()
            {
                static ImpSdrFillBitmapAttribute* pDefault = 0;

                if(!pDefault)
                {
                    pDefault = new ImpSdrFillBitmapAttribute(
			            Bitmap(),
                        basegfx::B2DVector(),
                        basegfx::B2DVector(),
			            basegfx::B2DVector(),
                        basegfx::B2DVector(),
			            false, 
                        false, 
                        false);

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

                return pDefault;
            }
		};

        SdrFillBitmapAttribute::SdrFillBitmapAttribute(
			const Bitmap& rBitmap, 
            const basegfx::B2DVector& rSize, 
            const basegfx::B2DVector& rOffset,
			const basegfx::B2DVector& rOffsetPosition, 
            const basegfx::B2DVector& rRectPoint,
			bool bTiling, 
            bool bStretch, 
            bool bLogSize)
		:	mpSdrFillBitmapAttribute(new ImpSdrFillBitmapAttribute(
                rBitmap, rSize, rOffset, rOffsetPosition, rRectPoint, bTiling,  bStretch, bLogSize))
		{
		}

		SdrFillBitmapAttribute::SdrFillBitmapAttribute()
        :	mpSdrFillBitmapAttribute(ImpSdrFillBitmapAttribute::get_global_default())
		{
			mpSdrFillBitmapAttribute->mnRefCount++;
		}

        SdrFillBitmapAttribute::SdrFillBitmapAttribute(const SdrFillBitmapAttribute& rCandidate)
		:	mpSdrFillBitmapAttribute(rCandidate.mpSdrFillBitmapAttribute)
		{
			mpSdrFillBitmapAttribute->mnRefCount++;
		}

		SdrFillBitmapAttribute::~SdrFillBitmapAttribute()
		{
			if(mpSdrFillBitmapAttribute->mnRefCount)
			{
				mpSdrFillBitmapAttribute->mnRefCount--;
			}
			else
			{
				delete mpSdrFillBitmapAttribute;
			}
		}

        bool SdrFillBitmapAttribute::isDefault() const
        {
            return mpSdrFillBitmapAttribute == ImpSdrFillBitmapAttribute::get_global_default();
        }

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

			return *this;
		}

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

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

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

        const Bitmap& SdrFillBitmapAttribute::getBitmap() const 
        { 
            return mpSdrFillBitmapAttribute->getBitmap(); 
        }

        const basegfx::B2DVector& SdrFillBitmapAttribute::getSize() const 
        { 
            return mpSdrFillBitmapAttribute->getSize(); 
        }

        const basegfx::B2DVector& SdrFillBitmapAttribute::getOffset() const 
        { 
            return mpSdrFillBitmapAttribute->getOffset(); 
        }

        const basegfx::B2DVector& SdrFillBitmapAttribute::getOffsetPosition() const 
        { 
            return mpSdrFillBitmapAttribute->getOffsetPosition(); 
        }

        const basegfx::B2DVector& SdrFillBitmapAttribute::getRectPoint() const 
        { 
            return mpSdrFillBitmapAttribute->getRectPoint(); 
        }

        bool SdrFillBitmapAttribute::getTiling() const 
        { 
            return mpSdrFillBitmapAttribute->getTiling(); 
        }

        bool SdrFillBitmapAttribute::getStretch() const 
        { 
            return mpSdrFillBitmapAttribute->getStretch(); 
        }

        bool SdrFillBitmapAttribute::getLogSize() const 
        { 
            return mpSdrFillBitmapAttribute->getLogSize(); 
        }

        FillBitmapAttribute SdrFillBitmapAttribute::getFillBitmapAttribute(const basegfx::B2DRange& rRange) const
		{
			// get logical size of bitmap (before expanding eventually)
			Bitmap aBitmap(getBitmap());
			const basegfx::B2DVector aLogicalSize(aBitmap.GetPrefSize().getWidth(), aBitmap.GetPrefSize().getHeight());

			// get hor/ver shiftings and apply them eventually to the bitmap, but only
			// when tiling is on
			bool bExpandWidth(false);
			bool bExpandHeight(false);

			if(getTiling())
			{
				if(0.0 != getOffset().getX() || 0.0 != getOffset().getY())
				{
					const sal_uInt32 nWidth(aBitmap.GetSizePixel().getWidth());
					const sal_uInt32 nHeight(aBitmap.GetSizePixel().getHeight());

					if(0.0 != getOffset().getX())
					{
						bExpandHeight = true;
						const sal_uInt32 nOffset(basegfx::fround(((double)nWidth * getOffset().getX()) / 100.0));
						aBitmap.Expand(0L, nHeight);

						const Size aSizeA(nOffset, nHeight);
						const Rectangle aDstA(Point(0L, nHeight), aSizeA);
						const Rectangle aSrcA(Point(nWidth - nOffset, 0L), aSizeA);
						aBitmap.CopyPixel(aDstA, aSrcA);

						const Size aSizeB(nWidth - nOffset, nHeight);
						const Rectangle aDstB(Point(nOffset, nHeight), aSizeB);
						const Rectangle aSrcB(Point(0L, 0L), aSizeB);
						aBitmap.CopyPixel(aDstB, aSrcB);
					}
					else
					{
						bExpandWidth = true;
						const sal_uInt32 nOffset(basegfx::fround(((double)nHeight * getOffset().getY()) / 100.0));
						aBitmap.Expand(nWidth, 0L);

						const Size aSize(nWidth, nHeight);
						const Rectangle aDst(Point(nWidth, 0L), aSize);
						const Rectangle aSrc(Point(0L, 0L), aSize);
						aBitmap.CopyPixel(aDst, aSrc);

						const Size aSizeA(nWidth, nOffset);
						const Rectangle aDstA(Point(0L, 0L), aSizeA);
						const Rectangle aSrcA(Point(nWidth, nHeight - nOffset), aSizeA);
						aBitmap.CopyPixel(aDstA, aSrcA);

						const Size aSizeB(nWidth, nHeight - nOffset);
						const Rectangle aDstB(Point(0L, nOffset), aSizeB);
						const Rectangle aSrcB(Point(nWidth, 0L), aSizeB);
						aBitmap.CopyPixel(aDstB, aSrcB);
					}
				}
			}

			// init values with defaults
			basegfx::B2DPoint aBitmapSize(1.0, 1.0);
			basegfx::B2DVector aBitmapTopLeft(0.0, 0.0);

			// are canges needed?
			if(getTiling() || !getStretch())
			{
				// init values with range sizes
				const double fRangeWidth(0.0 != rRange.getWidth() ? rRange.getWidth() : 1.0);
				const double fRangeHeight(0.0 != rRange.getHeight() ? rRange.getHeight() : 1.0);
				aBitmapSize = basegfx::B2DPoint(fRangeWidth, fRangeHeight);

				// size changes
				if(0.0 != getSize().getX())
				{
					if(getSize().getX() < 0.0)
					{
						aBitmapSize.setX(aBitmapSize.getX() * (getSize().getX() * -0.01));
					}
					else
					{
						aBitmapSize.setX(getSize().getX());
					}
				}
				else
				{
					aBitmapSize.setX(aLogicalSize.getX());
				}

				if(0.0 != getSize().getY())
				{
					if(getSize().getY() < 0.0)
					{
						aBitmapSize.setY(aBitmapSize.getY() * (getSize().getY() * -0.01));
					}
					else
					{
						aBitmapSize.setY(getSize().getY());
					}
				}
				else
				{
					aBitmapSize.setY(aLogicalSize.getY());
				}

				// get values, force to centered if necessary
				const basegfx::B2DVector aRectPoint(getTiling() ? getRectPoint() : basegfx::B2DVector(0.0, 0.0));

				// position changes X
				if(0.0 == aRectPoint.getX())
				{
					aBitmapTopLeft.setX((fRangeWidth - aBitmapSize.getX()) * 0.5);
				}
				else if(1.0 == aRectPoint.getX())
				{
					aBitmapTopLeft.setX(fRangeWidth - aBitmapSize.getX());
				}

				if(getTiling() && 0.0 != getOffsetPosition().getX())
				{
					aBitmapTopLeft.setX(aBitmapTopLeft.getX() + (aBitmapSize.getX() * (getOffsetPosition().getX() * 0.01)));
				}

				// position changes Y
				if(0.0 == aRectPoint.getY())
				{
					aBitmapTopLeft.setY((fRangeHeight - aBitmapSize.getY()) * 0.5);
				}
				else if(1.0 == aRectPoint.getY())
				{
					aBitmapTopLeft.setY(fRangeHeight - aBitmapSize.getY());
				}

				if(getTiling() && 0.0 != getOffsetPosition().getY())
				{
					aBitmapTopLeft.setY(aBitmapTopLeft.getY() + (aBitmapSize.getY() * (getOffsetPosition().getY() * 0.01)));
				}

				// apply expand
				if(bExpandWidth)
				{
					aBitmapSize.setX(aBitmapSize.getX() * 2.0);
				}

				if(bExpandHeight)
				{
					aBitmapSize.setY(aBitmapSize.getY() * 2.0);
				}

				// apply bitmap size scaling to unit rectangle
				aBitmapTopLeft.setX(aBitmapTopLeft.getX() / fRangeWidth);
				aBitmapTopLeft.setY(aBitmapTopLeft.getY() / fRangeHeight);
				aBitmapSize.setX(aBitmapSize.getX() / fRangeWidth);
				aBitmapSize.setY(aBitmapSize.getY() / fRangeHeight);
			}

			return FillBitmapAttribute(BitmapEx(aBitmap), aBitmapTopLeft, aBitmapSize, getTiling());
		}
	} // end of namespace attribute
} // end of namespace drawinglayer

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