kchart/libimageexport/imageexport.cpp

/* This file is part of the KDE project
   Copyright (C) 2005 Laurent Montel <montel@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 <tqpixmap.h>
#include <tqpainter.h>
 
#include <tdemessagebox.h>
 
#include <KoFilterChain.h>
#include <KoStore.h>
#include <kgenericfactory.h>
#include <KoDocument.h>
 
#include "imageexport.h"
#include "kchart_part.h"
 
ImageExport::ImageExport(KoFilter *, const char *, const TQStringList&)
    : KoFilter()
{
}
 
ImageExport::~ImageExport()
{
}
 
 
KoFilter::ConversionStatus
ImageExport::convert(const TQCString& from, const TQCString& to)
{
    // Check for proper conversion.
    if ( from != "application/x-kchart" || to != exportFormat() )
        return KoFilter::NotImplemented;
 
    // Read the contents of the KChart file
    KoStoreDevice* storeIn = m_chain->storageFile( "root", KoStore::Read );
    if ( !storeIn ) {
    KMessageBox::error( 0, i18n("Failed to read data." ),
                i18n( "Export Error" ) );
    return KoFilter::FileNotFound;
    }
 
    // Get the XML tree.
    TQDomDocument  domIn;
    domIn.setContent( storeIn );
    TQDomElement   docNode = domIn.documentElement();
 
    // Read the document from the XML tree.
    KChart::KChartPart  kchartDoc;
    if ( !kchartDoc.loadXML(0, domIn) ) {
        KMessageBox::error( 0, i18n( "Malformed XML data." ),
                i18n( "Export Error" ) );
        return KoFilter::WrongFormat;
    }
    width = 500;
    height = 400;
    extraImageAttribute();
    pixmap = TQPixmap(width, height);
    TQPainter  painter(&pixmap);
    kchartDoc.paintContent(painter, pixmap.rect(), false);
    if(!saveImage( m_chain->outputFile()))
    return KoFilter::CreationError;
    return KoFilter::OK; 
}
 
 
#include "imageexport.moc"