File indexing completed on 2024-05-12 16:34:29

 /* 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();
 }