/**************************************************************
 * 
 * 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/texture/texture3d.hxx>
#include <vcl/bmpacc.hxx>
#include <drawinglayer/primitive3d/hatchtextureprimitive3d.hxx>

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

namespace drawinglayer
{
	namespace texture
	{
		GeoTexSvxMono::GeoTexSvxMono(
            const basegfx::BColor& rSingleColor, 
            double fOpacity)
		:	maSingleColor(rSingleColor),
			mfOpacity(fOpacity)
		{
		}

		bool GeoTexSvxMono::operator==(const GeoTexSvx& rGeoTexSvx) const
		{
			const GeoTexSvxMono* pCompare = dynamic_cast< const GeoTexSvxMono* >(&rGeoTexSvx);
			
            return (pCompare 
				&& maSingleColor == pCompare->maSingleColor
				&& mfOpacity == pCompare->mfOpacity);
		}

		void GeoTexSvxMono::modifyBColor(const basegfx::B2DPoint& /*rUV*/, basegfx::BColor& rBColor, double& /*rfOpacity*/) const
		{
			rBColor = maSingleColor;
		}

		void GeoTexSvxMono::modifyOpacity(const basegfx::B2DPoint& /*rUV*/, double& rfOpacity) const
		{
			rfOpacity = mfOpacity;
		}
	} // end of namespace texture
} // end of namespace drawinglayer

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

namespace drawinglayer
{
	namespace texture
	{
		GeoTexSvxBitmapEx::GeoTexSvxBitmapEx(
            const BitmapEx& rBitmapEx, 
            const basegfx::B2DRange& rRange)
		:	maBitmapEx(rBitmapEx),
			mpReadBitmap(0),
            maTransparence(),
            mpReadTransparence(0),
			maTopLeft(rRange.getMinimum()),
			maSize(rRange.getRange()),
			mfMulX(0.0),
			mfMulY(0.0),
            mbIsAlpha(false),
            mbIsTransparent(maBitmapEx.IsTransparent())
		{
            // #121194# Todo: use alpha channel, too (for 3d)
			mpReadBitmap = maBitmapEx.GetBitmap().AcquireReadAccess();
			OSL_ENSURE(mpReadBitmap, "GeoTexSvxBitmapEx: Got no read access to Bitmap (!)");

            if(mbIsTransparent)
            {
                if(maBitmapEx.IsAlpha())
                {
                    mbIsAlpha = true;
                    maTransparence = rBitmapEx.GetAlpha().GetBitmap();
                }
                else
                {
                    maTransparence = rBitmapEx.GetMask();
                }

                mpReadTransparence = maTransparence.AcquireReadAccess();
            }
			
            mfMulX = (double)mpReadBitmap->Width() / maSize.getX();
			mfMulY = (double)mpReadBitmap->Height() / maSize.getY();

            if(maSize.getX() <= 1.0)
            {
                maSize.setX(1.0);
            }

            if(maSize.getY() <= 1.0)
            {
                maSize.setY(1.0);
            }
		}

		GeoTexSvxBitmapEx::~GeoTexSvxBitmapEx()
		{
            delete mpReadTransparence;
			delete mpReadBitmap;
		}

        sal_uInt8 GeoTexSvxBitmapEx::impGetTransparence(sal_Int32& rX, sal_Int32& rY) const
        {
            switch(maBitmapEx.GetTransparentType())
            {
                case TRANSPARENT_NONE:
                {
                    break;
                }
                case TRANSPARENT_COLOR:
                {
                    const BitmapColor aBitmapColor(mpReadBitmap->GetColor(rY, rX));

                    if(maBitmapEx.GetTransparentColor() == aBitmapColor.operator Color())
                    {
                        return 255;
                    }

                    break;
                }
                case TRANSPARENT_BITMAP:
                {
                    OSL_ENSURE(mpReadTransparence, "OOps, transparence type Bitmap, but no read access created in the constructor (?)");
                    const BitmapColor aBitmapColor(mpReadTransparence->GetPixel(rY, rX));

                    if(mbIsAlpha)
                    {
                        return aBitmapColor.GetIndex();
                    }
                    else
                    {
                        if(0x00 != aBitmapColor.GetIndex())
                        {
                            return 255;
                        }
                    }
                    break;
                }
            }

            return 0;
        }

		bool GeoTexSvxBitmapEx::impIsValid(const basegfx::B2DPoint& rUV, sal_Int32& rX, sal_Int32& rY) const
		{
			if(mpReadBitmap)
			{
				rX = (sal_Int32)((rUV.getX() - maTopLeft.getX()) * mfMulX);

				if(rX >= 0L && rX < mpReadBitmap->Width())
				{
					rY = (sal_Int32)((rUV.getY() - maTopLeft.getY()) * mfMulY);

					return (rY >= 0L && rY < mpReadBitmap->Height());
				}
			}

			return false;
		}

		void GeoTexSvxBitmapEx::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& rfOpacity) const
		{
			sal_Int32 nX, nY;

			if(impIsValid(rUV, nX, nY))
			{
				const double fConvertColor(1.0 / 255.0);
				const BitmapColor aBMCol(mpReadBitmap->GetColor(nY, nX));
				const basegfx::BColor aBSource(
					(double)aBMCol.GetRed() * fConvertColor, 
					(double)aBMCol.GetGreen() * fConvertColor, 
					(double)aBMCol.GetBlue() * fConvertColor);

				rBColor = aBSource;

                if(mbIsTransparent)
                {
                    // when we have a transparence, make use of it
                    const sal_uInt8 aLuminance(impGetTransparence(nX, nY));
                    
                    rfOpacity = ((double)(0xff - aLuminance) * (1.0 / 255.0));
                }
                else
                {
                    rfOpacity = 1.0;
                }
			}
			else
			{
				rfOpacity = 0.0;
			}
		}

		void GeoTexSvxBitmapEx::modifyOpacity(const basegfx::B2DPoint& rUV, double& rfOpacity) const
		{
			sal_Int32 nX, nY;

			if(impIsValid(rUV, nX, nY))
			{
                if(mbIsTransparent)
                {
                    // this texture has an alpha part, use it
                    const sal_uInt8 aLuminance(impGetTransparence(nX, nY));
                    const double fNewOpacity((double)(0xff - aLuminance) * (1.0 / 255.0));

                    rfOpacity = 1.0 - ((1.0 - fNewOpacity) * (1.0 - rfOpacity));
                }
                else
                {
                    // this texture is a color bitmap used as transparence map
				    const BitmapColor aBMCol(mpReadBitmap->GetColor(nY, nX));
				    const Color aColor(aBMCol.GetRed(), aBMCol.GetGreen(), aBMCol.GetBlue());

				    rfOpacity = ((double)(0xff - aColor.GetLuminance()) * (1.0 / 255.0));
                }
			}
			else
			{
				rfOpacity = 0.0;
			}
		}
	} // end of namespace texture
} // end of namespace drawinglayer

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

namespace drawinglayer
{
	namespace texture
	{
		basegfx::B2DPoint GeoTexSvxBitmapExTiled::impGetCorrected(const basegfx::B2DPoint& rUV) const
		{
            double fX(rUV.getX() - maTopLeft.getX());
            double fY(rUV.getY() - maTopLeft.getY());

            if(mbUseOffsetX)
            {
                const sal_Int32 nCol(static_cast< sal_Int32 >((fY < 0.0 ? maSize.getY() -fY : fY) / maSize.getY()));

                if(nCol % 2)
                {
                    fX += mfOffsetX * maSize.getX();
                }
            }
            else if(mbUseOffsetY)
            {
                const sal_Int32 nRow(static_cast< sal_Int32 >((fX < 0.0 ? maSize.getX() -fX : fX) / maSize.getX()));

                if(nRow % 2)
                {
                    fY += mfOffsetY * maSize.getY();
                }
            }

            fX = fmod(fX, maSize.getX());
            fY = fmod(fY, maSize.getY());

            if(fX < 0.0)
            {
                fX += maSize.getX();
            }
                
            if(fY < 0.0)
            {
                fY += maSize.getY();
            }

            return basegfx::B2DPoint(fX + maTopLeft.getX(), fY + maTopLeft.getY());
		}

        GeoTexSvxBitmapExTiled::GeoTexSvxBitmapExTiled(
            const BitmapEx& rBitmapEx, 
            const basegfx::B2DRange& rRange,
            double fOffsetX,
            double fOffsetY)
		:	GeoTexSvxBitmapEx(rBitmapEx, rRange),
            mfOffsetX(basegfx::clamp(fOffsetX, 0.0, 1.0)),
            mfOffsetY(basegfx::clamp(fOffsetY, 0.0, 1.0)),
            mbUseOffsetX(!basegfx::fTools::equalZero(mfOffsetX)),
            mbUseOffsetY(!mbUseOffsetX && !basegfx::fTools::equalZero(mfOffsetY))
		{
		}

		void GeoTexSvxBitmapExTiled::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& rfOpacity) const
		{
			if(mpReadBitmap)
			{
				GeoTexSvxBitmapEx::modifyBColor(impGetCorrected(rUV), rBColor, rfOpacity);
			}
		}

		void GeoTexSvxBitmapExTiled::modifyOpacity(const basegfx::B2DPoint& rUV, double& rfOpacity) const
		{
			if(mpReadBitmap)
			{
				GeoTexSvxBitmapEx::modifyOpacity(impGetCorrected(rUV), rfOpacity);
			}
		}
	} // end of namespace texture
} // end of namespace drawinglayer

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

namespace drawinglayer
{
	namespace texture
	{
		GeoTexSvxMultiHatch::GeoTexSvxMultiHatch(
            const primitive3d::HatchTexturePrimitive3D& rPrimitive, 
            double fLogicPixelSize)
		:	mfLogicPixelSize(fLogicPixelSize),
			mp0(0L),
			mp1(0L),
			mp2(0L)
		{
			const attribute::FillHatchAttribute& rHatch(rPrimitive.getHatch());
			const basegfx::B2DRange aOutlineRange(0.0, 0.0, rPrimitive.getTextureSize().getX(), rPrimitive.getTextureSize().getY());
			const double fAngleA(rHatch.getAngle());
			maColor = rHatch.getColor();
			mbFillBackground = rHatch.isFillBackground();
			mp0 = new GeoTexSvxHatch(aOutlineRange, rHatch.getDistance(), fAngleA);

			if(attribute::HATCHSTYLE_DOUBLE == rHatch.getStyle() || attribute::HATCHSTYLE_TRIPLE == rHatch.getStyle())
			{
				mp1 = new GeoTexSvxHatch(aOutlineRange, rHatch.getDistance(), fAngleA + F_PI2);
			}

			if(attribute::HATCHSTYLE_TRIPLE == rHatch.getStyle())
			{
				mp2 = new GeoTexSvxHatch(aOutlineRange, rHatch.getDistance(), fAngleA + F_PI4);
			}
		}

		GeoTexSvxMultiHatch::~GeoTexSvxMultiHatch()
		{
			delete mp0;
			delete mp1;
			delete mp2;
		}

		bool GeoTexSvxMultiHatch::impIsOnHatch(const basegfx::B2DPoint& rUV) const
		{
			if(mp0->getDistanceToHatch(rUV) < mfLogicPixelSize)
			{
				return true;
			}

			if(mp1 && mp1->getDistanceToHatch(rUV) < mfLogicPixelSize)
			{
				return true;
			}

			if(mp2 && mp2->getDistanceToHatch(rUV) < mfLogicPixelSize)
			{
				return true;
			}

			return false;
		}

		void GeoTexSvxMultiHatch::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& rfOpacity) const
		{
			if(impIsOnHatch(rUV))
			{
				rBColor = maColor;
			}
			else if(!mbFillBackground)
			{
				rfOpacity = 0.0;
			}
		}
		
		void GeoTexSvxMultiHatch::modifyOpacity(const basegfx::B2DPoint& rUV, double& rfOpacity) const
		{
			if(mbFillBackground || impIsOnHatch(rUV))
			{
				rfOpacity = 1.0;
			}
			else
			{
				rfOpacity = 0.0;
			}
		}
	} // end of namespace texture
} // end of namespace drawinglayer

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