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+/*  This file is part of the KDE project
+    Copyright (C) 2001-2002 Matthias Kretz <kretz@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 version 2 as published by the Free Software Foundation.
+
+    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.
+
+*/
+// $Id$
+
+#ifndef KIMAGEVIEWER_VIEWER_H
+#define KIMAGEVIEWER_VIEWER_H
+
+#include <kparts/part.h>
+#include <kdemacros.h>
+namespace KParts
+{
+	class BrowserExtension;
+}
+
+namespace KImageViewer
+{
+	class Canvas;
+
+/**
+ * An image viewer KPart
+ *
+ * @author Matthias Kretz <kretz@kde.org>
+ *
+ * You'll find an implementation in kdegraphics (KView). You may
+ * still use this interface in your program but it will only work
+ * if you have an implementation installed
+ *
+ * WARNING: This interface is not guaranteed to be kept binary or source compatible
+ * until it's finished. So if you're using this interface please get in contact
+ * with me.
+ */
+class KDE_EXPORT Viewer : public KParts::ReadWritePart
+{
+	Q_OBJECT
+	public:
+		Viewer( QObject * parent = 0, const char * name = 0 );
+
+		virtual ~Viewer();
+
+		/**
+		 * Return the canvas this viewer is using. The interface of the
+		 * canvas is defined in kimageviewer/canvas.h
+		 */
+		virtual Canvas * canvas() const = 0;
+
+		/**
+		 * If the Viewer wants to be configurable 
+		 */
+		//virtual void createConfigurationDialogPages() = 0;
+
+		/**
+		 * A pointer to the Browser Extension (if available). You should always
+		 * check whether this returns a valid pointer.
+		 */
+		virtual KParts::BrowserExtension * browserExtension() const { return 0; }
+
+	public slots:
+		/**
+		 * Set a new Image. Close the old one and change the caption and file
+		 * name and url and whatnot accordingly.
+		 * So if you want to display a new image (not change the one shown) this
+		 * is the method to use. Else take a look at Canvas::setImage().
+		 */
+		virtual void newImage( const QImage & ) = 0;
+
+		/**
+		 * Tell the view to reload the current image. The host for this view
+		 * should make an Action available for reloading.
+		 */
+		virtual void reload() = 0;
+
+	signals:
+		/**
+		 * Emitted when the viewer opens a new image
+		 */
+		void imageOpened( const KURL & );
+
+}; //class Viewer
+} //namespace KImageViewer
+
+// vim:sw=4:ts=4
+
+#endif // KIMAGEVIEWER_VIEWER_H