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/* This file is part of the KDE project
* Copyright (c) 2010 Jan Hambrecht <jaham@gmx.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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 Lesser 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 "ImageEffect.h"
#include "KoFilterEffectRenderContext.h"
#include "KoFilterEffectLoadingContext.h"
#include "KoViewConverter.h"
#include "KoXmlWriter.h"
#include "KoXmlReader.h"
#include <QMimeDatabase>
#include <QMimeType>
#include <QBuffer>
#include <QPainter>
#include <QDebug>
#include <klocalizedstring.h>
ImageEffect::ImageEffect()
: KoFilterEffect(ImageEffectId, i18n("Image"))
{
setRequiredInputCount(0);
setMaximalInputCount(0);
}
QImage ImageEffect::image() const
{
return m_image;
}
void ImageEffect::setImage(const QImage &image)
{
m_image = image;
}
QImage ImageEffect::processImage(const QImage &image, const KoFilterEffectRenderContext &context) const
{
QImage result(image.size(), QImage::Format_ARGB32_Premultiplied);
result.fill(qRgba(0, 0, 0, 0));
QPainter p(&result);
p.drawImage(context.filterRegion(), m_image);
return result;
}
bool ImageEffect::load(const KoXmlElement &element, const KoFilterEffectLoadingContext &context)
{
if (element.tagName() != id())
return false;
QString href = element.attribute("xlink:href");
if (href.startsWith(QLatin1String("data:"))) {
int start = href.indexOf("base64,");
if (start <= 0 || !m_image.loadFromData(QByteArray::fromBase64(href.mid(start + 7).toLatin1())))
return false;
} else if (!m_image.load(context.pathFromHref(href))) {
return false;
}
return true;
}
void ImageEffect::save(KoXmlWriter &writer)
{
writer.startElement(ImageEffectId);
saveCommonAttributes(writer);
QByteArray ba;
QBuffer buffer(&ba);
buffer.open(QIODevice::WriteOnly);
if (m_image.save(&buffer, "PNG")) {
QMimeDatabase db;
const QString mimeType(db.mimeTypeForData(ba).name());
writer.addAttribute("xlink:href", "data:" + mimeType + ";base64," + ba.toBase64());
}
writer.endElement();
}
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