File indexing completed on 2025-04-27 03:58:09

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2007-07-20
  * Description : Loader for thumbnails - Freedesktop.org standard implementation
  *
  * SPDX-FileCopyrightText: 2003-2005 by Renchi Raju <renchi dot raju at gmail dot com>
  * SPDX-FileCopyrightText: 2003-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  * SPDX-FileCopyrightText: 2006-2011 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "thumbnailcreator_p.h"
 
 namespace Digikam
 {
 
 ThumbnailInfo ThumbnailCreator::fileThumbnailInfo(const QString& path)
 {
     ThumbnailInfo info;
 
     if (path.isEmpty())
     {
         return info;
     }
 
     info.filePath     = path;
     QFileInfo fileInfo(path);
     info.isAccessible = fileInfo.exists();
     info.fileName     = fileInfo.fileName();
     QString suffix    = fileInfo.suffix().toUpper();
 
     QMimeDatabase mimeDB;
     QString mimeType(mimeDB.mimeTypeForFile(path).name());
 
     if      (mimeType.startsWith(QLatin1String("image/")) ||
              (suffix == QLatin1String("PGF"))             ||
              (suffix == QLatin1String("JXL"))             ||
              (suffix == QLatin1String("AVIF"))            ||
              (suffix == QLatin1String("KRA"))             ||
              (suffix == QLatin1String("CR3"))             ||
              (suffix == QLatin1String("HIF"))             ||
              (suffix == QLatin1String("HEIC"))            ||
              (suffix == QLatin1String("HEIF")))
     {
         info.mimeType = QLatin1String("image");
     }
     else if (mimeType.startsWith(QLatin1String("video/")))
     {
         info.mimeType = QLatin1String("video");
     }
 
     if (!info.isAccessible)
     {
         return info;
     }
 
     info.modificationDate = fileInfo.lastModified();
 
     return info;
 }
 
 ThumbnailImage ThumbnailCreator::loadFreedesktop(const ThumbnailInfo& info) const
 {
     QString path;
 
     if (!info.customIdentifier.isNull())
     {
         path = info.customIdentifier;
     }
     else
     {
         path = info.filePath;
     }
 
     QString uri       = thumbnailUri(path);
     QString thumbPath = thumbnailPath(path);
     QImage qimage     = loadPNG(thumbPath);
 
     // NOTE: if thumbnail have not been generated by digiKam (konqueror for example),
     // force to recompute it, else we use it.
 
     if (!qimage.isNull())
     {
         if ((qimage.text(QLatin1String("Thumb::MTime")) == QString::number(info.modificationDate.toSecsSinceEpoch())) &&
             (qimage.text(QLatin1String("Software"))     == d->digiKamFingerPrint))
         {
             ThumbnailImage imgInfo;
             imgInfo.qimage = qimage;
 
             // is stored rotated. Not needed to rotate.
 
             imgInfo.exifOrientation = DMetadata::ORIENTATION_NORMAL;
 
             return imgInfo;
         }
     }
 
     return ThumbnailImage();
 }
 
 void ThumbnailCreator::storeFreedesktop(const ThumbnailInfo& info, const ThumbnailImage& image) const
 {
     QImage qimage = image.qimage;
 
     QString path;
 
     if (!info.customIdentifier.isNull())
     {
         path = info.customIdentifier;
     }
     else
     {
         path = info.filePath;
     }
 
     QString uri       = thumbnailUri(path);
     QString thumbPath = thumbnailPath(path);
 
     // required by spec
 
     if (qimage.format() != QImage::Format_ARGB32)
     {
         qimage = qimage.convertToFormat(QImage::Format_ARGB32);
     }
 
     qimage.setText(QLatin1String("Thumb::URI"),   uri);
     qimage.setText(QLatin1String("Thumb::MTime"), QString::number(info.modificationDate.toSecsSinceEpoch()));
     qimage.setText(QLatin1String("Software"),     d->digiKamFingerPrint);
 
     QTemporaryFile temp;
     temp.setFileTemplate(thumbPath + QLatin1String("-digikam-") + QLatin1String("XXXXXX") + QLatin1String(".png"));
     temp.setAutoRemove(false);
 
     if (temp.open())
     {
         QString tempFileName = temp.fileName();
 
         if (qimage.save(tempFileName, "PNG", 0))
         {
             Q_ASSERT(!tempFileName.isEmpty());
 
             temp.close();
 
             // remove thumbPath file if it exist
 
             if ((tempFileName != thumbPath) && QFile::exists(tempFileName) && QFile::exists(thumbPath))
             {
                 QFile::remove(thumbPath);
             }
 
             if (!QFile::rename(tempFileName, thumbPath))
             {
                 qCDebug(DIGIKAM_GENERAL_LOG) << "Cannot rename thumb file (" << tempFileName << ")";
                 qCDebug(DIGIKAM_GENERAL_LOG) << "to (" << thumbPath << ")...";
             }
         }
     }
 }
 
 void ThumbnailCreator::deleteFromDiskFreedesktop(const QString& filePath) const
 {
     QFile smallThumb(thumbnailPath(filePath, normalThumbnailDir()));
     QFile largeThumb(thumbnailPath(filePath, largeThumbnailDir()));
 
     smallThumb.remove();
     largeThumb.remove();
 }
 
 } // namespace Digikam