gwenview/lib/jpegcontent.h

   1 // vim: set tabstop=4 shiftwidth=4 noexpandtab
   2 /*
   3 Gwenview: an image viewer
   4 Copyright 2007 Aurélien Gâteau <aurelien.gateau@free.fr>
   5
   6 This program is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19
  20 */
  21 #ifndef JPEGCONTENT_H
  22 #define JPEGCONTENT_H
  23
  24 // Local
  25 #include <lib/orientation.h>
  26 #include <lib/gwenviewlib_export.h>
  27
  28 class QImage;
  29 class QSize;
  30 class QString;
  31 class QIODevice;
  32
  33 namespace Exiv2 { class Image; }
  34
  35 namespace Gwenview {
  36
  37
  38 class GWENVIEWLIB_EXPORT JpegContent {
  39 public:
  40         JpegContent();
  41         ~JpegContent();
  42
  43         Orientation orientation() const;
  44         void resetOrientation();
  45
  46         int dotsPerMeterX() const;
  47         int dotsPerMeterY() const;
  48
  49         QSize size() const;
  50
  51         QString comment() const;
  52         void setComment(const QString&);
  53
  54         void transform(Orientation);
  55
  56         QImage thumbnail() const;
  57         void setThumbnail(const QImage&);
  58
  59         bool load(const QString& file);
  60         bool loadFromData(const QByteArray& rawData);
  61         /**
  62          * Use this version of loadFromData if you already have an Exiv2::Image*
  63          */
  64         bool loadFromData(const QByteArray& rawData, Exiv2::Image*);
  65         bool save(const QString& file);
  66         bool save(QIODevice*);
  67
  68         QByteArray rawData() const;
  69
  70         QString errorString() const;
  71
  72 private:
  73         struct Private;
  74         Private *d;
  75
  76         JpegContent(const JpegContent&);
  77         void operator=(const JpegContent&);
  78         void applyPendingTransformation();
  79         int dotsPerMeter(const QString& keyName) const;
  80 };
  81
  82
  83 } // namespace
  84
  85
  86 #endif /* JPEGCONTENT_H */