/* This file is part of the KDE project
   Copyright (C) 2002 Lars Siebold <khandha5@gmx.net>
   Copyright (C) 2002-2003,2005 Rob Buis <buis@kde.org>
   Copyright (C) 2002,2005-2006 David Faure <faure@kde.org>
   Copyright (C) 2002 Werner Trobin <trobin@kde.org>
   Copyright (C) 2002 Lennart Kudling <kudling@kde.org>
   Copyright (C) 2004 Nicolas Goutte <nicolasg@snafu.de>
   Copyright (C) 2005 Boudewijn Rempt <boud@valdyas.org>
   Copyright (C) 2005 Raphael Langerhorst <raphael.langerhorst@kdemail.net>
   Copyright (C) 2005 Thomas Zander <zander@kde.org>
   Copyright (C) 2005,2007-2008 Jan Hambrecht <jaham@gmx.net>
   Copyright (C) 2006 Inge Wallin <inge@lysator.liu.se>
   Copyright (C) 2006 Martin Pfeiffer <hubipete@gmx.net>
   Copyright (C) 2006 Gábor Lehel <illissius@gmail.com>
   Copyright (C) 2006 Laurent Montel <montel@kde.org>
   Copyright (C) 2006 Christian Mueller <cmueller@gmx.de>
   Copyright (C) 2006 Ariya Hidayat <ariya@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#include "svgexport.h"

#include <KarbonDocument.h>
#include <KarbonPart.h>

#include <KoDocument.h>
#include <KoFilterChain.h>
#include <KoShapeLayer.h>
#include <KoPathShape.h>
#include <KoLineBorder.h>
#include <KoColorBackground.h>
#include <KoGradientBackground.h>
#include <KoPatternBackground.h>
#include <plugins/artistictextshape/ArtisticTextShape.h>
#include <pathshapes/rectangle/KoRectangleShape.h>
#include <pathshapes/ellipse/KoEllipseShape.h>
#include <plugins/pictureshape/PictureShape.h>
#include <KoImageData.h>

#include <KGenericFactory>
#include <KMimeType>
#include <KTemporaryFile>
#include <KIO/NetAccess>
#include <KIO/CopyJob>

#include <QtCore/QFile>
#include <QtCore/QString>
#include <QtCore/QTextStream>
#include <QtCore/QBuffer>
#include <QtCore/QFileInfo>
#include <QtGui/QLinearGradient>
#include <QtGui/QRadialGradient>

const double ScaleToUserSpace = 90.0 / 72.0;

static void printIndentation( QTextStream *stream, unsigned int indent )
{
    static const QString INDENT("  ");
    for( unsigned int i = 0; i < indent;++i)
        *stream << INDENT;
}

typedef KGenericFactory<SvgExport> SvgExportFactory;
K_EXPORT_COMPONENT_FACTORY( libkarbonsvgexport, SvgExportFactory( "kofficefilters" ) )

SvgExport::SvgExport( QObject*parent, const QStringList& )
    : KoFilter(parent), m_indent( 0 ), m_indent2( 0 )
{
    m_userSpaceMatrix.scale( ScaleToUserSpace, ScaleToUserSpace );
}

KoFilter::ConversionStatus SvgExport::convert( const QByteArray& from, const QByteArray& to )
{
    if ( to != "image/svg+xml" || from != "application/vnd.oasis.opendocument.graphics" )
        return KoFilter::NotImplemented;

    KoDocument * document = m_chain->inputDocument();
    if( ! document )
        return KoFilter::ParsingError;

    KarbonPart * karbonPart = dynamic_cast<KarbonPart*>( document );
    if( ! karbonPart )
        return KoFilter::WrongFormat;

    QFile fileOut( m_chain->outputFile() );
    if( !fileOut.open( QIODevice::WriteOnly ) )
        return KoFilter::StupidError;

    m_stream = new QTextStream( &fileOut );
    QString body;
    m_body = new QTextStream( &body, QIODevice::ReadWrite );
    QString defs;
    m_defs = new QTextStream( &defs, QIODevice::ReadWrite );

    saveDocument( karbonPart->document() );

    *m_stream << defs;
    *m_stream << body;

    fileOut.close();

    delete m_stream;
    delete m_defs;
    delete m_body;

    return KoFilter::OK;
}

void SvgExport::saveDocument( KarbonDocument& document )
{
    // get the bounding box of the page
    QSizeF pageSize = document.pageSize();

    // standard header:
    *m_defs <<
        "<?xml version=\"1.0\" standalone=\"no\"?>\n" <<
        "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 20010904//EN\" " <<
        "\"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">"
    << endl;

    // add some PR.  one line is more than enough.  
    *m_defs <<
        "<!-- Created using Karbon14, part of koffice: http://www.koffice.org/karbon -->" << endl;

    *m_defs <<
        "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"" <<
        pageSize.width() << "pt\" height=\"" << pageSize.height() << "pt\">" << endl;
    printIndentation( m_defs, ++m_indent2 );
    *m_defs << "<defs>" << endl;

    m_indent++;
    m_indent2++;

    // export layers:
    foreach( KoShapeLayer * layer, document.layers() )
        saveLayer( layer );

    // end tag:
    printIndentation( m_defs, --m_indent2 );
    *m_defs << "</defs>" << endl;
    *m_body << "</svg>" << endl;
}

void SvgExport::saveLayer( KoShapeLayer * layer )
{
    printIndentation( m_body, m_indent++ );
    *m_body << "<g" << getID( layer ) << ">" << endl;

    QList<KoShape*> sortedShapes = layer->iterator();
    qSort(sortedShapes.begin(), sortedShapes.end(), KoShape::compareShapeZIndex);

    foreach( KoShape * shape, sortedShapes )
    {
        KoShapeContainer * container = dynamic_cast<KoShapeContainer*>( shape );
        if( container )
            saveGroup( container );
        else
            saveShape( shape );
    }

    printIndentation( m_body, --m_indent );
    *m_body << "</g>" << endl;
}

void SvgExport::saveGroup( KoShapeContainer * group )
{
    printIndentation( m_body, m_indent++ );
    *m_body << "<g" << getID( group );
    *m_body << getTransform( group->transformation(), " transform" );
    if( ! group->isVisible() )
        *m_body << " display=\"none\"";
    *m_body << ">" << endl;

    QList<KoShape*> sortedShapes = group->iterator();
    qSort(sortedShapes.begin(), sortedShapes.end(), KoShape::compareShapeZIndex);

    foreach( KoShape * shape, sortedShapes )
    {
        KoShapeContainer * container = dynamic_cast<KoShapeContainer*>( shape );
        if( container )
            saveGroup( container );
        else
            saveShape( shape );
    }

    printIndentation( m_body, --m_indent );
    *m_body << "</g>" << endl;
}

void SvgExport::saveShape( KoShape * shape )
{
    KoPathShape * path = dynamic_cast<KoPathShape*>( shape );
    if( path )
    {
        if( path->pathShapeId() == KoRectangleShapeId )
        {
            saveRectangle( static_cast<KoRectangleShape*>( path ) );
        }
        else if( path->pathShapeId() == KoEllipseShapeId )
        {
            saveEllipse( static_cast<KoEllipseShape*>( path ) );
        }
        else 
        {
            savePath( path );
        }
    }
    else
    {
        if( shape->shapeId() == ArtisticTextShapeID )
        {
            saveText( static_cast<ArtisticTextShape*>( shape ) );
        }
        else if( shape->shapeId() == PICTURESHAPEID )
        {
            saveImage( static_cast<PictureShape*>( shape ) );
        }
    }
}

void SvgExport::savePath( KoPathShape * path )
{
    printIndentation( m_body, m_indent );
    *m_body << "<path" << getID( path );

    getStyle( path, m_body );

    *m_body << " d=\"" << path->toString( m_userSpaceMatrix ) << "\" ";
    *m_body << getTransform( path->transformation(), " transform" );

    *m_body << " />" << endl;
}

void SvgExport::saveEllipse( KoEllipseShape * ellipse )
{
    if( ellipse->type() == KoEllipseShape::Arc && ellipse->startAngle() == ellipse->endAngle() )
    {
        printIndentation( m_body, m_indent );
        QSizeF size = ellipse->size();
        if( size.width() == size.height() )
        {
            *m_body << "<circle" << getID( ellipse );
            *m_body << " r=\"" << 0.5 * size.width() << "pt\"";
        }
        else
        {
            *m_body << "<ellipse" << getID( ellipse );
            *m_body << " rx=\"" << 0.5 * size.width() << "pt\"";
            *m_body << " ry=\"" << 0.5 * size.height() << "pt\"";
        }
        *m_body << " cx=\"" << 0.5 * size.width() << "pt\"";
        *m_body << " cy=\"" << 0.5 * size.height() << "pt\"";
        *m_body << getTransform( ellipse->transformation(), " transform" );
        getStyle( ellipse, m_body );
        *m_body << "/>" << endl;
    }
    else
    {
        savePath( ellipse );
    }
}

void SvgExport::saveRectangle( KoRectangleShape * rectangle )
{
    printIndentation( m_body, m_indent );
    *m_body << "<rect" << getID( rectangle );
    *m_body << getTransform( rectangle->transformation(), " transform" );

    getStyle( rectangle, m_body );

    QSizeF size = rectangle->size();
    *m_body << " width=\"" << size.width() << "pt\""; 
    *m_body << " height=\"" << size.height() << "pt\""; 

    double rx = rectangle->cornerRadiusX();
    if( rx > 0.0 )
        *m_body << " rx=\"" << 0.01 * rx * 0.5 * size.width() << "pt\""; 
    double ry = rectangle->cornerRadiusY();
    if( ry > 0.0 )
        *m_body << " ry=\"" << 0.01 * ry * 0.5 * size.height() << "pt\""; 

    *m_body << "/>" << endl;
}

static QString createUID()
{
    static unsigned int nr = 0;

    return "defitem" + QString().setNum( nr++ );
}

QString SvgExport::createID( const KoShape * obj )
{
    QString id;
    if( ! m_shapeIds.contains( obj ) )
    {
        id = obj->name().isEmpty() ? createUID() : obj->name();
        m_shapeIds.insert( obj, id );
    }
    else
    {
        id = m_shapeIds[obj];
    }
    return id;
}

QString SvgExport::getID( const KoShape *obj )
{
    return QString( " id=\"%1\"" ).arg( createID( obj ) );
}

QString SvgExport::getTransform( const QMatrix &matrix, const QString &attributeName )
{
    if( matrix.isIdentity() )
        return "";

    QString transform = attributeName + "=\"";
    if( isTranslation( matrix ) )
    {
        transform += QString("translate(%1, %2)")
                    .arg( toUserSpace(matrix.dx()) )
                    .arg( toUserSpace(matrix.dy()) );
    }
    else
    {
        transform += QString( "matrix(%1 %2 %3 %4 %5 %6)" )
                    .arg( matrix.m11() ).arg( matrix.m12() )
                    .arg( matrix.m21() ).arg( matrix.m22() )
                    .arg( toUserSpace(matrix.dx()) ) .arg( toUserSpace(matrix.dy()) );
    }

    return transform + "\"";
}

bool SvgExport::isTranslation( const QMatrix &m )
{
    return ( m.m11() == 1.0 && m.m12() == 0.0 && m.m21() == 0.0 && m.m22() == 1.0 );
}

void SvgExport::getColorStops( const QGradientStops & colorStops )
{
    m_indent2++;
    foreach( const QGradientStop &stop, colorStops )
    {
        printIndentation( m_defs, m_indent2 );
        *m_defs << "<stop stop-color=\"";
        getHexColor( m_defs, stop.second );
        *m_defs << "\" offset=\"" << QString().setNum( stop.first );
        *m_defs << "\" stop-opacity=\"" << stop.second.alphaF() << "\"" << " />" << endl;
    }
    m_indent2--;
}

void SvgExport::getGradient( const QGradient * gradient, const QMatrix &gradientTransform )
{
    if( ! gradient )
        return;

    const QString spreadMethod[3] = {
        QString("spreadMethod=\"pad\" "),
        QString("spreadMethod=\"reflect\" "),
        QString("spreadMethod=\"repeat\" ")
    };

    QString uid = createUID();
    if( gradient->type() == QGradient::LinearGradient )
    {
        const QLinearGradient * g = static_cast<const QLinearGradient*>( gradient );
        // do linear grad
        printIndentation( m_defs, m_indent2 );
        *m_defs << "<linearGradient id=\"" << uid << "\" ";
        *m_defs << "gradientUnits=\"userSpaceOnUse\" ";
        *m_defs << getTransform( gradientTransform, "gradientTransform" ) << " ";
        *m_defs << "x1=\"" << toUserSpace( g->start().x() ) << "\" ";
        *m_defs << "y1=\"" << toUserSpace( g->start().y() ) << "\" ";
        *m_defs << "x2=\"" << toUserSpace( g->finalStop().x() ) << "\" ";
        *m_defs << "y2=\"" << toUserSpace( g->finalStop().y() ) << "\" ";
        *m_defs << spreadMethod[g->spread()];
        *m_defs << ">" << endl;

        // color stops
        getColorStops( gradient->stops() );

        printIndentation( m_defs, m_indent2 );
        *m_defs << "</linearGradient>" << endl;
        *m_body << "url(#" << uid << ")";
    }
    else if( gradient->type() == QGradient::RadialGradient )
    {
        const QRadialGradient * g = static_cast<const QRadialGradient*>( gradient );
        // do radial grad
        printIndentation( m_defs, m_indent2 );
        *m_defs << "<radialGradient id=\"" << uid << "\" ";
        *m_defs << "gradientUnits=\"userSpaceOnUse\" ";
        *m_defs << getTransform( gradientTransform, "gradientTransform" ) << " ";
        *m_defs << "cx=\"" << toUserSpace( g->center().x() ) << "\" ";
        *m_defs << "cy=\"" << toUserSpace( g->center().y() ) << "\" ";
        *m_defs << "fx=\"" << toUserSpace( g->focalPoint().x() ) << "\" ";
        *m_defs << "fy=\"" << toUserSpace( g->focalPoint().y() ) << "\" ";
        *m_defs << "r=\"" << QString().setNum( toUserSpace( g->radius() ) ) << "\" ";
        *m_defs << spreadMethod[g->spread()];
        *m_defs << ">" << endl;

        // color stops
        getColorStops( gradient->stops() );

        printIndentation( m_defs, m_indent2 );
        *m_defs << "</radialGradient>" << endl;
        *m_body << "url(#" << uid << ")";
    }
    else if( gradient->type() == QGradient::ConicalGradient )
    {
        //const QConicalGradient * g = static_cast<const QConicalGradient*>( gradient );
        // fake conical grad as radial.
        // fugly but better than data loss.
        /*
        printIndentation( m_defs, m_indent2 );
        *m_defs << "<radialGradient id=\"" << uid << "\" ";
        *m_defs << "gradientUnits=\"userSpaceOnUse\" ";
        *m_defs << "cx=\"" << g->center().x() << "\" ";
        *m_defs << "cy=\"" << g->center().y() << "\" ";
        *m_defs << "fx=\"" << grad.focalPoint().x() << "\" ";
        *m_defs << "fy=\"" << grad.focalPoint().y() << "\" ";
        double r = sqrt( pow( grad.vector().x() - grad.origin().x(), 2 ) + pow( grad.vector().y() - grad.origin().y(), 2 ) );
        *m_defs << "r=\"" << QString().setNum( r ) << "\" ";
        *m_defs << spreadMethod[g->spread()];
        *m_defs << ">" << endl;

        // color stops
        getColorStops( gradient->stops() );

        printIndentation( m_defs, m_indent2 );
        *m_defs << "</radialGradient>" << endl;
        *m_body << "url(#" << uid << ")";
        */
    }
}

// better than nothing
void SvgExport::getPattern( KoPatternBackground * pattern, KoShape * shape )
{
    QString uid = createUID();

    QSizeF shapeSize = shape->size();
    QSizeF patternSize = pattern->patternDisplaySize();
    QSize imageSize = pattern->pattern().size();

    // calculate offset in point
    QPointF offset = pattern->referencePointOffset();
    offset.rx() = 0.01 * offset.x() * patternSize.width();
    offset.ry() = 0.01 * offset.y() * patternSize.height();

    // now take the reference point into account
    switch( pattern->referencePoint() )
    {
    case KoPatternBackground::TopLeft:
        break;
    case KoPatternBackground::Top:
        offset += QPointF(0.5 * shapeSize.width(), 0.0);
        break;
    case KoPatternBackground::TopRight:
        offset += QPointF(shapeSize.width(), 0.0);
        break;
    case KoPatternBackground::Left:
        offset += QPointF(0.0, 0.5 * shapeSize.height());
        break;
    case KoPatternBackground::Center:
        offset += QPointF(0.5 * shapeSize.width(), 0.5 * shapeSize.height());
        break;
    case KoPatternBackground::Right:
        offset += QPointF(shapeSize.width(), 0.5*shapeSize.height());
        break;
    case KoPatternBackground::BottomLeft:
        offset += QPointF(0.0, shapeSize.height());
        break;
    case KoPatternBackground::Bottom:
        offset += QPointF(0.5*shapeSize.width(), shapeSize.height());
        break;
    case KoPatternBackground::BottomRight:
        offset += QPointF(shapeSize.width(), shapeSize.height());
        break;
    }

    offset = shape->absoluteTransformation(0).map( offset );

    printIndentation( m_defs, m_indent2 );
    *m_defs << "<pattern id=\"" << uid << "\"";
    *m_defs << " x=\"" << toUserSpace(offset.x()) << "\"";
    *m_defs << " y=\"" << toUserSpace(offset.y()) << "\"";

    if( pattern->repeat() == KoPatternBackground::Stretched )
    {
        *m_defs << " width=\"100%\"";
        *m_defs << " height=\"100%\"";
        *m_defs << " patternUnits=\"objectBoundingBox\"";
    }
    else
    {
        *m_defs << " width=\"" << toUserSpace(patternSize.width()) << "\"";
        *m_defs << " height=\"" << toUserSpace(patternSize.height()) << "\"";
        *m_defs << " patternUnits=\"userSpaceOnUse\"";
    }

    *m_defs << " viewBox=\"0 0 " << imageSize.width() << " " << imageSize.height() << "\"";
    //*m_defs << " patternContentUnits=\"userSpaceOnUse\""; 
    *m_defs << ">" << endl;

    printIndentation( m_defs, m_indent2++ );
    
    *m_defs << "<image";

    *m_defs << " x=\"0\"";
    *m_defs << " y=\"0\"";
    *m_defs << " width=\"" << imageSize.width() << "px\"";
    *m_defs << " height=\"" << imageSize.height() << "px\"";

    QByteArray ba;
    QBuffer buffer(&ba);
    buffer.open(QIODevice::WriteOnly);
    if( pattern->pattern().save( &buffer, "PNG" ) )
    {
        const QString mimeType( KMimeType::findByContent( ba )->name() );
        *m_defs << " xlink:href=\"data:" << mimeType << ";base64," << ba.toBase64() <<  "\"";
    }

    *m_defs << "/>" << endl;

    printIndentation( m_defs, --m_indent2 );
    *m_defs << "</pattern>" << endl;

    *m_body << "url(#" << uid << ")";
}

void SvgExport::getStyle( KoShape * shape, QTextStream * stream )
{
    getFill( shape, stream );
    getStroke( shape, stream );
    if( ! shape->isVisible() )
        *stream << " display=\"none\"";
}

void SvgExport::getFill( KoShape * shape, QTextStream *stream )
{

    if( ! shape->background() )
    {
        *stream << " fill=\"none\"";
    }

    QBrush fill( Qt::NoBrush );
    KoColorBackground * cbg = dynamic_cast<KoColorBackground*>( shape->background() );
    if( cbg )
    {
        *stream << " fill=\"";
        getHexColor( stream, cbg->color() );
        *stream << "\"";
        *stream << " fill-opacity=\"" << cbg->color().alphaF() << "\"";
    }
    KoGradientBackground * gbg = dynamic_cast<KoGradientBackground*>( shape->background() );
    if( gbg )
    {
        *stream << " fill=\"";
        getGradient( gbg->gradient(), gbg->matrix() );
        *stream << "\"";
    }
    KoPatternBackground * pbg = dynamic_cast<KoPatternBackground*>( shape->background() );
    if( pbg )
    {
        *stream << " fill=\"";
        getPattern( pbg, shape );
        *stream << "\"";
    }

    KoPathShape * path = dynamic_cast<KoPathShape*>( shape );
    if( path && shape->background() )
    {
        if( path->fillRule() == Qt::OddEvenFill )
            *stream << " fill-rule=\"evenodd\"";
        else
            *stream << " fill-rule=\"nonzero\"";
    }
}

void SvgExport::getStroke( KoShape *shape, QTextStream *stream )
{
    const KoLineBorder * line = dynamic_cast<const KoLineBorder*>( shape->border() );
    if( ! line )
        return;

    *stream << " stroke=\"";
    if( line->lineStyle() == Qt::NoPen )
        *stream << "none";
    else if( line->lineBrush().gradient() )
        getGradient( line->lineBrush().gradient(), line->lineBrush().matrix() );
    else
        getHexColor( stream, line->color() );
    *stream << "\"";

    *stream << " stroke-opacity=\"" << line->color().alphaF() << "\"";
    *stream << " stroke-width=\"" << toUserSpace(line->lineWidth()) << "\"";

    if( line->capStyle() == Qt::FlatCap )
        *stream << " stroke-linecap=\"butt\"";
    else if( line->capStyle() == Qt::RoundCap )
        *stream << " stroke-linecap=\"round\"";
    else if( line->capStyle() == Qt::SquareCap )
        *stream << " stroke-linecap=\"square\"";

    if( line->joinStyle() == Qt::MiterJoin )
    {
        *stream << " stroke-linejoin=\"miter\"";
        *stream << " stroke-miterlimit=\"" << line->miterLimit() << "\"";
    }
    else if( line->joinStyle() == Qt::RoundJoin )
        *stream << " stroke-linejoin=\"round\"";
    else if( line->joinStyle() == Qt::BevelJoin )
            *stream << " stroke-linejoin=\"bevel\"";

    // dash
    if(  line->lineStyle() > Qt::SolidLine )
    {
        qreal dashFactor = line->lineWidth();

        if( line->dashOffset() != 0 )
            *stream << " stroke-dashoffset=\"" << dashFactor * line->dashOffset() << "\"";
        *stream << " stroke-dasharray=\" ";

        const QVector<qreal> dashes = line->lineDashes();
        int dashCount = dashes.size();
        for( int i = 0; i < dashCount; ++i )
        {
            if( i > 0 )
                *stream << ",";
            *stream << dashes[i] * dashFactor;
        }
        *stream << "\"";
    }
}

void SvgExport::getHexColor( QTextStream *stream, const QColor & color )
{
    // Convert the various color-spaces to hex
    QString Output;

    Output.sprintf( "#%02x%02x%02x", color.red(), color.green(), color.blue() );

    *stream << Output;
}

void SvgExport::saveText( ArtisticTextShape * text )
{
    printIndentation( m_body, m_indent++ );
    *m_body << "<text" << getID( text );

    getFill( text, m_body );
    getStroke( text, m_body );

    QFont font = text->font();

    *m_body << " font-family=\"" << font.family() << "\"";
    *m_body << " font-size=\"" << font.pointSize() << "pt\"";

    if( font.bold() )
        *m_body << " font-weight=\"bold\"";
    if( font.italic() )
        *m_body << " font-style=\"italic\"";

    qreal anchorOffset = 0.0;
    if( text->textAnchor() == ArtisticTextShape::AnchorMiddle )
    {
        anchorOffset += 0.5 * text->size().width();
        *m_body << " text-anchor=\"middle\"";
    }
    else if( text->textAnchor() == ArtisticTextShape::AnchorEnd )
    {
        anchorOffset += text->size().width();
        *m_body << " text-anchor=\"end\"";
    }

    printIndentation( m_body, m_indent );

    // check if we are set on a path
    if( text->layout() == ArtisticTextShape::Straight )
    {
        QMatrix m = text->transformation();
        if( isTranslation( m ) )
        {
            QPointF position = text->position();
            *m_body << " x=\"" << position.x() + anchorOffset << "pt\"";
            *m_body << " y=\"" << position.y() + text->baselineOffset() << "pt\"";
        }
        else
        {
            *m_body << " x=\"" << anchorOffset << "pt\"";
            *m_body << " y=\"" << text->baselineOffset() << "pt\"";
            *m_body << getTransform( text->transformation(), " transform" );
        }
        *m_body << ">" << endl;
        *m_body << text->text();
    }
    else
    {
        KoPathShape * baseline = KoPathShape::fromQPainterPath( text->baseline() );

        QString id;

        printIndentation( m_defs, m_indent );

        id = createUID();
        *m_defs << "<path id=\"" << id << "\"";
        *m_defs << " d=\"" << baseline->toString( baseline->absoluteTransformation(0) * m_userSpaceMatrix ) << "\" ";
        *m_defs << " />" << endl;

        *m_body << ">" << endl;
        *m_body << "<textPath xlink:href=\"#" << id << "\"";
        if( text->startOffset() > 0.0 )
            *m_body << " startOffset=\"" << text->startOffset() * 100.0 << "%\"";	
        *m_body << ">";
        *m_body << text->text();
        *m_body << "</textPath>" << endl;

        delete baseline;
    }

    printIndentation( m_body, --m_indent );
    *m_body << "</text>" << endl;
}

void SvgExport::saveImage( PictureShape * picture )
{
    KoImageData * imageData = dynamic_cast<KoImageData*>( picture->userData() );
    if( ! imageData )
    {
        qWarning() << "Picture has no image data. Omitting.";
        return;
    }

    printIndentation( m_body, m_indent );

    *m_body << "<image" << getID( picture );
    QMatrix m = picture->transformation();
    if( isTranslation( m ) )
    {
        QPointF position = picture->position();
        *m_body << " x=\"" << position.x() << "pt\"";
        *m_body << " y=\"" << position.y() << "pt\"";
    }
    else
    {
        *m_body << getTransform( picture->transformation(), " transform" );
    }

    *m_body << " width=\"" << picture->size().width() << "pt\"";
    *m_body << " height=\"" << picture->size().height() <<"pt\"";

    const bool saveInline = true;

    if( saveInline )
    {
        QByteArray ba;
        QBuffer buffer(&ba);
        buffer.open(QIODevice::WriteOnly);
        if( imageData->saveToFile( buffer ) )
        {
            const QString mimeType( KMimeType::findByContent( ba )->name() );
            *m_body << " xlink:href=\"data:" << mimeType << ";base64," << ba.toBase64() <<  "\"";
        }
    }
    else
    {
        // write to a temp file first
        KTemporaryFile imgFile;
        if( imageData->saveToFile( imgFile ) )
        {
            // tz: TODO the new version of KoImageData has the extension save inside maybe that can be used
            // get the mime type from the temp file content
            KMimeType::Ptr mimeType = KMimeType::findByFileContent( imgFile.fileName() );
            // get url of destination directory
            KUrl url( m_chain->outputFile() );
            QString dstBaseFilename = QFileInfo( url.fileName() ).baseName();
            url.setDirectory( url.directory() );
            // create a filename for the image file at the destination directory
            QString fname = dstBaseFilename + '_' + createID( picture );
            // get extension from mimetype
            QString ext = "";
            QStringList patterns = mimeType->patterns();
            if( patterns.count() )
                ext = patterns.first().mid( 1 );
            url.setFileName( fname + ext );
            // check if file exists already
            int i = 0;
            // change filename as long as the filename already exists
            while( KIO::NetAccess::exists( url, KIO::NetAccess::DestinationSide, 0 ) )
                url.setFileName( fname + QString( "_%1").arg( ++i ) + ext );
            // move the temp file to the destination directory
            KIO::Job * job = KIO::move( KUrl( imgFile.fileName() ), url );
            if( job && KIO::NetAccess::synchronousRun( job, 0 ) )
                *m_body << " xlink:href=\"" << url.fileName() << "\"";
            else
                KIO::NetAccess::removeTempFile( imgFile.fileName() );
        }
    }
    *m_body << " />" << endl;
}

double SvgExport::toUserSpace( double value )
{
    return value * ScaleToUserSpace;
}


#include "svgexport.moc"

