historyimageitem.cpp

/* This file is part of the KDE project
   Copyright (C) 2004  Esben Mose Hansen <kde@mosehansen.dk>

   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.

   This program 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
    General Public License for more details.

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

#include <QMimeData>
#include <QCryptographicHash>

namespace {
    QByteArray compute_uuid(const QPixmap& data) {
        QByteArray buffer;
        QDataStream out(&buffer, QIODevice::WriteOnly);
        out << data;
        return QCryptographicHash::hash(buffer, QCryptographicHash::Sha1);
    }

}

HistoryImageItem::HistoryImageItem( const QPixmap& data )
    : HistoryItem(compute_uuid(data))
    , m_data( data )
{
}

QString HistoryImageItem::text() const {
    if ( m_text.isNull() ) {
        m_text = QString( "%1x%2x%3 %4" )
                 .arg( m_data.width() )
                 .arg( m_data.height() )
                 .arg( m_data.depth() );
    }
    return m_text;

}

/* virtual */
void HistoryImageItem::write( QDataStream& stream ) const {
    stream << QString( "image" ) << m_data;
}

QMimeData* HistoryImageItem::mimeData() const
{
    QMimeData *data = new QMimeData();
    data->setImageData(m_data.toImage());
    return data;
}