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 /* This file is part of the KDE project
  * Copyright (C) 2007, 2009 Thomas Zander <zander@kde.org>
  * Copyright (C) 2007 Jan Hambrecht <jaham@gmx.net>
  * Copyright (C) 2008 Thorsten Zachmann <zachmann@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 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 Library 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.
  */
 #ifndef KOIMAGEDATA_H
 #define KOIMAGEDATA_H
 
 #include "flake_export.h"
 
 #include <QSize>
 #include <QMetaType>
 
 #include <KoShapeUserData.h>
 
 class QIODevice;
 class QPixmap;
 class QImage;
 class QSizeF;
 class QUrl;
 class KoImageCollection;
 class KoImageDataPrivate;
 class KoStore;
 
 /**
  * This class is meant to represent the image data so it can be shared between image shapes.
  *
  * This class inherits from KoShapeUserData which means you can set it on any KoShape using
  * KoShape::setUserData() and get it using KoShape::userData().  The pictureshape plugin
  * uses this class to show its image data.
  *
  * Plugins should not make a copy of the pixmap data, but use the pixmap() method, which
  * handles caching.
  */
 class FLAKE_EXPORT KoImageData : public KoShapeUserData
 {
     Q_OBJECT
 public:
     /// Various error codes representing what has gone wrong
     enum ErrorCode {
         Success,
         OpenFailed,
         StorageFailed, ///< This is set if the image data has to be stored on disk in a temporary file, but we failed to do so
         LoadFailed
     };
 
     /// default constructor, creates an invalid imageData object
     KoImageData();
 
     ~KoImageData() override;
     KoImageData(const KoImageData &imageData);
     KoImageData &operator=(const KoImageData &other);
     inline bool operator!=(const KoImageData &other) const { return !operator==(other); }
     bool operator==(const KoImageData &other) const;
 
     void setImage(const QString &location, KoStore *store, KoImageCollection *collection = 0);
 
     /**
      * Renders a pixmap the first time you request it is called and returns it.
      * @returns the cached pixmap
      * @see isValid(), hasCachedPixmap()
      */
     QPixmap pixmap(const QSize &targetSize = QSize());
 
     /**
      * Return the internal store of the image.
      * @see isValid(), hasCachedImage()
      */
     QImage image() const;
 
     /**
      * The size of the image in points
      */
     QSizeF imageSize();
 
     /**
      * Save the image data to the param device.
      * The full file is saved.
      * @param device the device that is used to get the data from.
      * @return returns true if load was successful.
      */
     bool saveData(QIODevice &device);
 
     /**
      * Get a unique key of the image data
      */
     qint64 key() const;
 
     /// @return the original image file's extension, e.g. "png" or "gif"
     QString suffix() const;
 
     ErrorCode errorCode() const;
 
     /// returns if this is a valid imageData with actual image data present on it.
     bool isValid() const;
 
     /// \internal
     KoImageDataPrivate *priv() { return d; }
 
 private:
     friend class KoImageCollection;
     friend class TestImageCollection;
 
 
     explicit KoImageData(KoImageDataPrivate *priv);
 
     /// returns true only if pixmap() would return immediately with a cached pixmap
     bool hasCachedPixmap() const;
 
     /// returns true only if image() would return immediately with a cached image
     bool hasCachedImage() const;
 
     void setImage(const QImage &image, KoImageCollection *collection = 0);
     void setImage(const QByteArray &imageData, KoImageCollection *collection = 0);
 
 
 private:
     KoImageDataPrivate *d;
     Q_PRIVATE_SLOT(d, void cleanupImageCache())
 };
 
 Q_DECLARE_METATYPE(KoImageData*)
 
 #endif