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

 /* 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();
 }