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+/***************************************************************************
+ * Copyright (C) 2006 by Ken Werner *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program 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 General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
+ ***************************************************************************/
+
+#ifndef SYSFREQSRC_H
+#define SYSFREQSRC_H
+#include "labelsource.h"
+#include "threadedtrigger.h"
+#include <qfile.h>
+#include <list>
+
+/**
+ * SysFreqSrc reads frequency values from /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
+ */
+class SysFreqSrc : public LabelSource {
+ Q_OBJECT //macro which activates signals and slots (moc)
+public:
+ /**
+ * Creates a new Source from the given File
+ */
+ SysFreqSrc(QWidget* inParent, const QFile& inSourceFile);
+ virtual ~SysFreqSrc();
+
+ /**
+ * Creates instances of that Source (and returns pointers to them)
+ */
+ static std::list<Source*> createInstances(QWidget* inParent);
+
+ /**
+ * Fetches and returns the value of this source
+ * This method is called from a thread so don't call it directly
+ */
+ virtual QString fetchValue();
+
+private:
+ /**
+ * The file from which the value is read
+ */
+ QFile mSourceFile;
+
+ /**
+ * triggers the fetchValue method
+ */
+ ThreadedTrigger mTrigger;
+};
+#endif //SYSFREQSRC_H
+