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/* This file is part of the KDE project
* Copyright (c) 2009 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 "MergeEffect.h"
#include "KoViewConverter.h"
#include "KoXmlWriter.h"
#include "KoXmlReader.h"
#include <klocalizedstring.h>
#include <QPainter>
#include <limits.h>
MergeEffect::MergeEffect()
: KoFilterEffect(MergeEffectId, i18n("Merge"))
{
setRequiredInputCount(2);
setMaximalInputCount(INT_MAX);
}
QImage MergeEffect::processImage(const QImage &image, const KoFilterEffectRenderContext &/*context*/) const
{
Q_UNUSED(image);
return image;
}
QImage MergeEffect::processImages(const QVector<QImage> &images, const KoFilterEffectRenderContext &/*context*/) const
{
int imageCount = images.count();
if (!imageCount)
return QImage();
QImage result = images[0];
if (imageCount == 1)
return result;
QPainter p(&result);
for (int i = 1; i < imageCount; ++i) {
p.drawImage(QPoint(), images[i]);
}
return result;
}
bool MergeEffect::load(const KoXmlElement &element, const KoFilterEffectLoadingContext &)
{
if (element.tagName() != id())
return false;
int inputCount = inputs().count();
int inputIndex = 0;
for (KoXmlNode n = element.firstChild(); !n.isNull(); n = n.nextSibling()) {
KoXmlElement node = n.toElement();
if (node.tagName() == "feMergeNode") {
if (node.hasAttribute("in")) {
if (inputIndex < inputCount)
setInput(inputIndex, node.attribute("in"));
else
addInput(node.attribute("in"));
inputIndex++;
}
}
}
return true;
}
void MergeEffect::save(KoXmlWriter &writer)
{
writer.startElement(MergeEffectId);
saveCommonAttributes(writer);
foreach(const QString &input, inputs()) {
writer.startElement("feMergeNode");
writer.addAttribute("in", input);
writer.endElement();
}
writer.endElement();
}
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