Oops. Forgot to commit meter base class header.

Meter.H

@@ -0,0 +1,87 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 Jonathan Moore Liles                                     */
+/*                                                                             */
+/* 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; see the file COPYING.  If not,write to the Free Software */
+/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+/*******************************************************************************/
+
+/* Base class for all meters */
+
+class Meter : public Fl_Widget
+{
+
+    float _peak;
+    float _value;
+
+protected:
+
+    virtual void draw ( void ) = 0;
+    virtual int handle ( int m )
+        {
+            if ( m == FL_PUSH )
+                reset();
+
+            return 0;
+        }
+
+    float
+    deflection ( float db )
+        {
+            float def = 0.0f;
+
+            if ( db < -70.0f )
+                def = 0.0f;
+            else if ( db < -60.0f )
+                def = ( db + 70.0f ) * 0.25f;
+            else if ( db < -50.0f )
+                def = ( db + 60.0f ) * 0.5f + 2.5f;
+            else if ( db < -40.0f )
+                def = ( db + 50.0f ) * 0.75f + 7.5f;
+            else if ( db < -30.0f )
+                def = ( db + 40.0f ) * 1.5f + 15.0f;
+            else if ( db < -20.0f )
+                def = ( db + 30.0f ) * 2.0f + 30.0f;
+            else if ( db < 6.0f )
+                def = ( db + 20.0f ) * 2.5f + 50.0f;
+            else
+                def = 115.0f;
+
+            return def / 115.0f;
+        }
+
+public:
+
+    Meter ( int X, int Y, int W, int H,  const char *L = 0 ) :
+        Fl_Widget( X, Y, W, H, L )
+        {
+            _peak = _value = -80.0f;
+        }
+
+    virtual ~Meter ( ) { }
+
+    void value ( float v )
+        {
+            _value = v;
+
+            if ( _value > _peak )
+                _peak = _value;
+        }
+
+    float value ( void ) const { return _value; }
+    float peak ( void ) const { return _peak; }
+
+    void reset ( void ) { _peak = -80.0f; redraw(); }
+
+};