/* -*- 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/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
    {
        GeoTexSvxBitmap::GeoTexSvxBitmap(const Bitmap& rBitmap, const basegfx::B2DPoint& rTopLeft, const basegfx::B2DVector& rSize)
        :   maBitmap(rBitmap),
            mpRead(0L),
            maTopLeft(rTopLeft),
            maSize(rSize),
            mfMulX(0.0),
            mfMulY(0.0)
        {
            mpRead = maBitmap.AcquireReadAccess();
            OSL_ENSURE(mpRead, "GeoTexSvxBitmap: Got no read access to Bitmap (!)");
            mfMulX = (double)mpRead->Width() / maSize.getX();
            mfMulY = (double)mpRead->Height() / maSize.getY();
        }

        GeoTexSvxBitmap::~GeoTexSvxBitmap()
        {
            delete mpRead;
        }

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

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

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

            return false;
        }

        void GeoTexSvxBitmap::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(mpRead->GetColor(nY, nX));
                const basegfx::BColor aBSource(
                    (double)aBMCol.GetRed() * fConvertColor,
                    (double)aBMCol.GetGreen() * fConvertColor,
                    (double)aBMCol.GetBlue() * fConvertColor);

                rBColor = aBSource;
            }
            else
            {
                rfOpacity = 0.0;
            }
        }

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

            if(impIsValid(rUV, nX, nY))
            {
                const BitmapColor aBMCol(mpRead->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
    {
        GeoTexSvxBitmapTiled::GeoTexSvxBitmapTiled(const Bitmap& rBitmap, const basegfx::B2DPoint& rTopLeft, const basegfx::B2DVector& rSize)
        :   GeoTexSvxBitmap(rBitmap, rTopLeft, rSize)
        {
        }

        void GeoTexSvxBitmapTiled::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& rfOpacity) const
        {
            if(mpRead)
            {
                GeoTexSvxBitmap::modifyBColor(impGetCorrected(rUV), rBColor, rfOpacity);
            }
        }

        void GeoTexSvxBitmapTiled::modifyOpacity(const basegfx::B2DPoint& rUV, double& rfOpacity) const
        {
            if(mpRead)
            {
                GeoTexSvxBitmap::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

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