/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/



#ifndef INCLUDED_PDFI_HELPER_HXX
#define INCLUDED_PDFI_HELPER_HXX

#include "contentsink.hxx"

#include <rtl/ustring.hxx>
#include <rtl/math.h>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <com/sun/star/rendering/XColorSpace.hpp>

#include <vector>
#include <hash_map>

// virtual resolution of the PDF OutputDev in dpi
#define PDFI_OUTDEV_RESOLUTION 7200

namespace com { namespace sun { namespace star { namespace task
{ class XInteractionHandler; }}}}

namespace pdfi
{
    typedef std::hash_map< rtl::OUString, rtl::OUString, rtl::OUStringHash > PropertyMap; 
    typedef sal_Int32 ImageId;    

    /// What to do with a polygon. values can be ORed together
    enum PolygonAction { PATH_STROKE=1, PATH_FILL=2, PATH_EOFILL=4 };

    rtl::OUString unitMMString( double fMM );
    rtl::OUString convertPixelToUnitString( double fPix );

    inline double convPx2mm( double fPix )
    {
        const double px2mm = 25.4/PDFI_OUTDEV_RESOLUTION;
        fPix *= px2mm;
        return fPix;
    }
    
    inline double convmm2Px( double fMM )
    {
        const double mm2px = PDFI_OUTDEV_RESOLUTION/25.4;
        fMM *= mm2px;
        return fMM;
    }
    
    inline double convPx2mmPrec2( double fPix )
    {
        return rtl_math_round( convPx2mm( fPix ), 2, rtl_math_RoundingMode_Floor );
    }

    /// Convert color to "#FEFEFE" color notation
    rtl::OUString getColorString( const ::com::sun::star::rendering::ARGBColor& );

    struct FontAttrHash
    {
        size_t operator()(const FontAttributes& rFont ) const
        {
            return (size_t)rFont.familyName.hashCode()
                ^  size_t(rFont.isBold ? 0xd47be593 : 0)
                ^  size_t(rFont.isItalic ? 0x1efd51a1 : 0)
                ^  size_t(rFont.isUnderline ? 0xf6bd325a : 0)
                ^  size_t(rFont.isOutline ?  0x12345678 : 0)
                ^  size_t(rFont.size)
                ;
        }
    };

    struct GraphicsContext
    {
        ::com::sun::star::rendering::ARGBColor     LineColor;
        ::com::sun::star::rendering::ARGBColor     FillColor;
        sal_Int8                                   LineJoin;
        sal_Int8                                   LineCap;
        sal_Int8                                   BlendMode;
        double                                     Flatness;
        double                                     LineWidth;
        double                                     MiterLimit;
        std::vector<double>                        DashArray;
        sal_Int32                                  FontId;
        sal_Int32                                  TextRenderMode;
        basegfx::B2DHomMatrix                      Transformation;
        basegfx::B2DPolyPolygon                    Clip;

        GraphicsContext() :
            LineColor(),
            FillColor(),
            LineJoin(0),
            LineCap(0),
            BlendMode(0),
            Flatness(0.0),
            LineWidth(1.0),
            MiterLimit(10.0),
            DashArray(),
            FontId(0),
            TextRenderMode(0),
            Transformation(),
            Clip()
        {}

        bool operator==(const GraphicsContext& rRight ) const
        {
            return LineColor.Red == rRight.LineColor.Red &&
                LineColor.Green == rRight.LineColor.Green &&
                LineColor.Blue == rRight.LineColor.Blue &&
                LineColor.Alpha == rRight.LineColor.Alpha &&
                FillColor.Red == rRight.FillColor.Red &&
                FillColor.Green == rRight.FillColor.Green &&
                FillColor.Blue == rRight.FillColor.Blue &&
                FillColor.Alpha == rRight.FillColor.Alpha &&
                LineJoin  == rRight.LineJoin &&
                LineCap   == rRight.LineCap &&
                BlendMode == rRight.BlendMode &&
                LineWidth == rRight.LineWidth &&
                Flatness == rRight.Flatness &&
                MiterLimit == rRight.MiterLimit &&
                DashArray == rRight.DashArray &&
                FontId    == rRight.FontId &&
                TextRenderMode == rRight.TextRenderMode &&
                Transformation == rRight.Transformation &&
                Clip == rRight.Clip;
        }
            
        bool isRotatedOrSkewed() const
        { return Transformation.get( 0, 1 ) != 0.0 ||
                Transformation.get( 1, 0 ) != 0.0; }
    };
        
    struct GraphicsContextHash
    {
        size_t operator()(const GraphicsContext& rGC ) const
        {
            return size_t(rGC.LineColor.Red)
                ^  size_t(rGC.LineColor.Green)
                ^  size_t(rGC.LineColor.Blue)
                ^  size_t(rGC.LineColor.Alpha)
                ^  size_t(rGC.FillColor.Red)
                ^  size_t(rGC.FillColor.Green)
                ^  size_t(rGC.FillColor.Blue)
                ^  size_t(rGC.FillColor.Alpha)
                ^  size_t(rGC.LineJoin)
                ^  size_t(rGC.LineCap)
                ^  size_t(rGC.BlendMode)
                ^  size_t(rGC.LineWidth)
                ^  size_t(rGC.Flatness)
                ^  size_t(rGC.MiterLimit)
                ^  rGC.DashArray.size()
                ^  size_t(rGC.FontId)
                ^  size_t(rGC.TextRenderMode)
                ^  size_t(rGC.Transformation.get( 0, 0 ))
                ^  size_t(rGC.Transformation.get( 1, 0 ))
                ^  size_t(rGC.Transformation.get( 0, 1 ))
                ^  size_t(rGC.Transformation.get( 1, 1 ))
                ^  size_t(rGC.Transformation.get( 0, 2 ))
                ^  size_t(rGC.Transformation.get( 1, 2 ))
                ^  size_t(rGC.Clip.count() ? rGC.Clip.getB2DPolygon(0).count() : 0)
                ;
        }
    };

    /** retrieve password from user
     */
    bool getPassword( const ::com::sun::star::uno::Reference< 
                            ::com::sun::star::task::XInteractionHandler >& xHandler,
                      rtl::OUString&                                       rOutPwd,
                      bool                                                 bFirstTry,
                      const rtl::OUString&                                 rDocName
                      );
}

#define USTR(x) rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( x ) )

#endif