create an UnZip derived class for zip file extraction to allow showing progress while unzipping. Makes the unzip process somewhat interruptable and the UI more responsible.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16993 a1c6a512-1295-4272-9138-f99709370657

rbutil/rbutilqt/rbunzip.h

@@ -0,0 +1,44 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ *   Copyright (C) 2008 by Dominik Riebeling
+ *   $Id$
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef RBUNZIP_H
+#define RBUNZIP_H
+
+#include <QtCore>
+#include "zip/unzip.h"
+#include "zip/zip.h"
+
+class RbUnZip : public QObject, public UnZip
+{
+	Q_OBJECT
+	public:
+        UnZip::ErrorCode extractArchive(const QString&);
+
+	signals:
+		void unzipProgress(int, int);
+
+    public slots:
+        void abortUnzip(void);
+
+    private:
+        bool m_abortunzip;
+};
+
+#endif
+