+ /** Sets the status of the loading process. Also notifies
+ * listeners that the status has changed.
+ */
+ void setStatus(ImageStatus new_status);
+
+ /** Can be invoked directly by the user, but is also connected to the
+ * FileMonitor and so is invoked when the file is changed
+ * (if monitoring is taking place).
+ */
+ void startLoading();
+
+ /** If we are asked to load the file for a second or further time,
+ * (because the file has changed), then we'll have to first reset
+ * many of the variables below.
+ */
+ void reset();
+
+ /// The filename we refer too.
+ string const filename_;
+ ///
+ FileMonitor const monitor_;
+
+ /// Is the file compressed?
+ bool zipped_;
+ /// If so, store the uncompressed file in this temporary file.
+ string unzipped_filename_;
+ /// What file are we trying to load?
+ string file_to_load_;
+ /** Should we delete the file after loading? True if the file is
+ * the result of a conversion process.
+ */
+ bool remove_loaded_file_;
+
+ /// The image and its loading status.
+ boost::shared_ptr<Image> image_;
+ ///
+ ImageStatus status_;
+
+ /// This signal is emitted when the image loading status changes.
+ boost::signal0<void> statusChanged;
+
+ /// The connection to the signal Image::finishedLoading
+ boost::signals::connection cl_;
+
+ /// The connection of the signal ConvProcess::finishedConversion,
+ boost::signals::connection cc_;
+
+ ///
+ boost::scoped_ptr<Converter> converter_;
+};
+
+
+CacheItem::CacheItem(string const & file)
+ : pimpl_(new Impl(file))