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97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
/***************************************************************************
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* Copyright 2010 by Davide Bettio <davide.bettio@kdemail.net> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
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***************************************************************************/
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#include "imageloader.h"
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#include <QImage>
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#include <kdebug.h>
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#ifdef HAVE_KEXIV2
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#include <libkexiv2/kexiv2.h>
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#endif
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ImageLoader::ImageLoader(const QString &path)
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{
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m_path = path;
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#ifdef HAVE_KEXIV2
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// prevets crashes due the xmp library not having a thread safe init
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// may get fixed in future version of exiv2 according to devs
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// FIXME: due to not knowing when it is safe to *uninitialize* exiv2 since others
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// may be using it, this may ultimately result in a small one-time memory leak;
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// either we need to know all users of KExiv2, or the thread safety issue needs
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// to get fixed.
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KExiv2Iface::KExiv2::initializeExiv2();
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#endif
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}
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QImage ImageLoader::correctRotation(const QImage& tempImage, const QString &path)
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{
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QImage image = QImage();
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if (!tempImage.isNull()) {
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#ifdef HAVE_KEXIV2
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KExiv2Iface::KExiv2 exif(path);
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QMatrix m;
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switch (exif.getImageOrientation()) {
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case KExiv2Iface::KExiv2::ORIENTATION_HFLIP:
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m.scale(-1.0,1.0);
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image = tempImage.transformed(m);
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break;
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case KExiv2Iface::KExiv2::ORIENTATION_ROT_180:
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m.rotate(180);
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image = tempImage.transformed(m);
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break;
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case KExiv2Iface::KExiv2::ORIENTATION_VFLIP:
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m.scale(1.0,-1.0);
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image = tempImage.transformed(m);
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break;
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case KExiv2Iface::KExiv2::ORIENTATION_ROT_90:
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m.rotate(90);
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image = tempImage.transformed(m);
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break;
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case KExiv2Iface::KExiv2::ORIENTATION_ROT_90_HFLIP:
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m.rotate(90);
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m.scale(-1.0,1.0);
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image = tempImage.transformed(m);
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break;
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case KExiv2Iface::KExiv2::ORIENTATION_ROT_90_VFLIP:
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m.rotate(90);
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m.scale(1.0,-1.0);
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image = tempImage.transformed(m);
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break;
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case KExiv2Iface::KExiv2::ORIENTATION_ROT_270:
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m.rotate(270);
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image = tempImage.transformed(m);
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break;
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default:
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image = tempImage;
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}
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#else
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image = tempImage;
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#endif
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}
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return image;
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}
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void ImageLoader::run()
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{
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QImage img = correctRotation(QImage(m_path), m_path);
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emit loaded(img);
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}
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#include "moc_imageloader.cpp"
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