diff -r cf4e83cecdb5 -r dcd472be9ae8 src/analog/abstractmeter.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/analog/abstractmeter.cpp	Wed Jun 29 21:28:13 2022 +0200
@@ -0,0 +1,84 @@
+/***************************************************************************
+ *   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.             *
+ ***************************************************************************/
+
+#include <assert.h>
+#include "abstractmeter.h"
+#include "functions.h" 
+
+AbstractMeter::AbstractMeter(QWidget * parent )
+ : WidgetWithBackground (parent)
+{
+  m_min=m_minimum=0.0;
+  m_max=m_maximum=1.0;
+  m_digitOffset=1.0;
+  m_nominal=0.25;
+  m_critical=0.75; 
+} 
+
+
+bool AbstractMeter::calcMaxMin()
+{
+ return range(m_minimum,m_maximum,m_min,m_max,8,true); 
+}
+
+void AbstractMeter::setValue( double val )
+{
+  if ( m_value != val )
+  {
+    m_value = val;
+    update(); 
+    emit valueChanged(val);
+    emit valueChanged((int)val); 
+  }
+}
+
+void AbstractMeter::setValue( int val )
+{
+  if ( m_value != val )
+  {
+    m_value = val;
+    update(); // Ciekawe czy tak jest lepiej ??
+    // to znaczy najpierw odmalować a potem generować sygnał ? 
+    emit valueChanged(val);
+    emit valueChanged(double(val));
+  }
+}
+
+void AbstractMeter::setMinimum(double i)
+{
+  if ((m_maximum - i) > 0.00001 )
+  {
+    m_minimum = i;
+    if (calcMaxMin()) updateWithBackground();
+  }
+}
+
+void AbstractMeter::setMaximum(double i)
+{
+  if ( (i - m_minimum) > 0.00001 )
+  {
+    m_maximum = i;
+    if (calcMaxMin()) updateWithBackground();
+  }
+}
+
+