/***************************************************************************
 *   Copyright (C) 2007 by Tobias Koenig <tokoe@kde.org>                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#include "generator_comicbook.h"

#include <QtGui/QPainter>
#include <QtGui/QPrinter>

#include <kaboutdata.h>
#include <klocale.h>

#include <okular/core/document.h>
#include <okular/core/page.h>
#include <okular/core/fileprinter.h>

static KAboutData createAboutData()
{
    KAboutData aboutData(
         "okular_comicbook",
         "okular_comicbook",
         ki18n( "ComicBook Backend" ),
         "0.2.1",
         ki18n( "A renderer for various comic book formats" ),
         KAboutData::License_GPL,
         ki18n( "© 2007-2008 Tobias Koenig" )
    );
    aboutData.addAuthor( ki18n( "Tobias Koenig" ), KLocalizedString(), "tokoe@kde.org" );

    return aboutData;
}

OKULAR_EXPORT_PLUGIN( ComicBookGenerator, createAboutData() )

ComicBookGenerator::ComicBookGenerator( QObject *parent, const QVariantList &args )
    : Generator( parent, args )
{
    setFeature( Threaded );
    setFeature( PrintNative );
    setFeature( PrintToFile );
}

ComicBookGenerator::~ComicBookGenerator()
{
}

bool ComicBookGenerator::loadDocument( const QString & fileName, QVector<Okular::Page*> & pagesVector )
{
    if ( !mDocument.open( fileName ) )
    {
        const QString errString = mDocument.lastErrorString();
        if ( !errString.isEmpty() )
            emit error( errString, -1 );
        return false;
    }

    int pages = mDocument.pages();
    pagesVector.resize( pages );

    QSize aux;
    for ( int i = 0; i < pages; ++i ) {
         aux = mDocument.pageSize( i );

         Okular::Page * page = new Okular::Page( i, aux.width(), aux.height(), Okular::Rotation0 );
         pagesVector[i] = page;
    }

    return true;
}

bool ComicBookGenerator::doCloseDocument()
{
    mDocument.close();

    return true;
}

QImage ComicBookGenerator::image( Okular::PixmapRequest * request )
{
    int width = request->width();
    int height = request->height();

    QImage image = mDocument.pageImage( request->pageNumber() );

    return image.scaled( width, height, Qt::IgnoreAspectRatio, Qt::SmoothTransformation );
}

bool ComicBookGenerator::print( QPrinter& printer )
{
    QPainter p( &printer );

    QList<int> pageList = Okular::FilePrinter::pageList( printer, document()->pages(),
                                                         document()->currentPage() + 1,
                                                         document()->bookmarkedPageList() );

    for ( int i = 0; i < pageList.count(); ++i ) {

        QImage image = mDocument.pageImage( pageList[i] - 1 );

        if ( ( image.width() > printer.width() ) || ( image.height() > printer.height() ) )

            image = image.scaled( printer.width(), printer.height(),
                                  Qt::KeepAspectRatio, Qt::SmoothTransformation );

        if ( i != 0 )
            printer.newPage();

        p.drawImage( 0, 0, image );
    }

    return true;
}

#include "generator_comicbook.moc"

