diff -r cf4e83cecdb5 -r dcd472be9ae8 src/analog/abstractmeter.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/analog/abstractmeter.h	Wed Jun 29 21:28:13 2022 +0200
@@ -0,0 +1,133 @@
+/***************************************************************************
+ *   Copyright (C) 2006-2008 by Tomasz Ziobrowski                          *
+ *   http://www.3electrons.com                                             *
+ *   e-mail: t.ziobrowski@3electrons.com                                   *
+ *                                                                         *
+ *                                                                         *
+ *   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.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#ifndef ABSTRACTMETER_H
+#define ABSTRACTMETER_H
+
+#include "widgetwithbackground.h"
+
+   /**
+   * Abstract class for Meter/Gauge classes 
+   */
+   class AbstractMeter : public WidgetWithBackground
+   {
+	Q_OBJECT
+	Q_PROPERTY (double minimum READ minimum WRITE setMinimum )
+	Q_PROPERTY (double maximum READ maximum WRITE setMaximum )
+	Q_PROPERTY (double value   READ value   WRITE setValue )
+	Q_PROPERTY (double nominal READ nominal WRITE setNominal);
+	Q_PROPERTY (double critical READ critical WRITE setCritical);
+
+	Q_PROPERTY (QString prefix READ prefix WRITE setPrefix)
+	Q_PROPERTY (QString suffix READ suffix WRITE setSuffix)
+	Q_PROPERTY (QFont valueFont READ valueFont   WRITE setValueFont)
+	Q_PROPERTY (double valueOffset READ valueOffset WRITE setValueOffset)
+	Q_PROPERTY (QFont digitFont READ digitFont   WRITE setDigitFont)
+	Q_PROPERTY (double digitOffset READ digitOffset WRITE setDigitOffset)
+
+
+    public:
+
+    	AbstractMeter(QWidget *parent = 0);
+	virtual ~AbstractMeter() {};
+
+	double  minimum() const   { return m_minimum; }
+        void setMinimum(double i);
+        double  maximum() const   { return m_maximum; }
+        void setMaximum(double i);
+        double value() const         { return m_value;}
+
+	double nominal() const	  { return m_nominal; 		}
+	void setNominal(double i)    { m_nominal = i; updateWithBackground();}
+	double critical() const	  { return m_critical;		}
+	void setCritical(double i)   { m_critical = i; updateWithBackground();}
+
+	QFont valueFont() const   { return m_valueFont;        }
+	void setValueFont(QFont f){ m_valueFont = f; updateWithBackground(); }
+
+	double valueOffset() const   { return m_valueOffset;       }
+	void setValueOffset(double v){ m_valueOffset = v; updateWithBackground();}
+
+	double digitOffset() const   { return m_digitOffset;       }
+	void setDigitOffset(double v){ m_digitOffset = v; updateWithBackground();}
+
+	QFont digitFont() const   { return m_digitFont;         }
+	void setDigitFont(QFont f){ m_digitFont = f; updateWithBackground();  }
+
+        QString prefix() const    { return m_prefix;  }
+        void setPrefix(QString s) { m_prefix = s; updateWithBackground(); }
+
+        QString suffix() const    { return m_suffix;  }
+        void setSuffix(QString s) { m_suffix = s; updateWithBackground(); }
+
+    public slots:
+       	void setValue(int val);
+        void setValue(double val); 
+    signals:
+    	void valueChanged(int val);
+    	void valueChanged(double val);
+
+    protected:
+
+       /**
+         * Calculate m_max and m_min values shown on scale 
+	 * @return true if m_max or m_min has been changed
+	 */
+       
+	bool calcMaxMin();
+        
+	/** Starting value on meter  this value is less than m_minimum */
+	double m_min;
+	/** Endgind value on meter this value is more than m_maximum*/
+	double m_max;
+        
+        /** Minimum that has to be on scale */
+	double m_minimum;
+        /** Maximum that has to be on scale */
+	double m_maximum;
+        
+        /** Current value */
+	double m_value;
+        
+        /** Nominal value (allowed value) by convention mark by green look to manometer and thermometer widgets */
+	double m_nominal;
+        /** Critical value (maximum allowed value) by convention mark by red */
+	double m_critical;
+
+        /** Used to place value string on component */
+	double m_valueOffset;
+        /** Used to place scale digits offset. On manometer distance from the center on thermometer distance form left */
+	double m_digitOffset;
+        
+        /** Font used to display value */
+ 	QFont m_valueFont;
+        /** Font used to display scale digit/numbers */
+	QFont m_digitFont;
+        
+        /** Prefix added to value string  like Speed  */
+	QString m_prefix;
+        /** Postfix added to value string like km/h or mph */ 
+	QString m_suffix;
+
+   };// AbstractMeter
+
+#endif // ABSTRACTMETER_H_