Add a Meter base class, rename VU Meter to DPM.

VU_Meter.C → DPM.C

@@ -17,22 +17,19 @@
 /* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 /*******************************************************************************/
 
-/* a VU meter, either horizontal or vertical.  Color is a gradient
-   from min_color() to max_color(). box() is used to draw the
+/* a Digital Peak Meter, either horizontal or vertical.  Color is a
+   gradient from min_color() to max_color(). box() is used to draw the
    individual 'lights'. division() controls how many 'lights' there
-   are. */
+   are. value() is volume in dBFS */
 
-#include "VU_Meter.H"
+#include "DPM.H"
 
 #include <FL/Fl.H>
 #include <FL/fl_draw.H>
 
-VU_Meter::VU_Meter ( int X, int Y, int W, int H, const char *L ) :
-    Fl_Widget( X, Y, W, H, L )
+DPM::DPM ( int X, int Y, int W, int H, const char *L ) :
+    Meter( X, Y, W, H, L )
 {
-
-    _peak = 0.0f;
-
     divisions( 32 );
     type( FL_VERTICAL );
 
@@ -42,19 +39,17 @@ VU_Meter::VU_Meter ( int X, int Y, int W, int H, const char *L ) :
     max_color( FL_RED );
 
     box( FL_ROUNDED_BOX );
-
-    minimum( 0.0f );
-    maximum( 1.0f );
-
-    value( 0.0f );
 }
 
+/* which marks to draw beside meter */
+const int marks [] = { -70, -50, -40, -30, -10, -3, 0, 4 };
+
 void
-VU_Meter::draw ( void )
+DPM::draw ( void )
 {
 //    draw_box( FL_FLAT_BOX, x(), y(), w(), h(), color() );
     int v = pos( value() );
-    int pv = pos( _peak );
+    int pv = pos( peak() );
 
     int bh = h() / _divisions;
     int bw = w() / _divisions;
@@ -75,21 +70,4 @@ VU_Meter::draw ( void )
         else
             draw_box( box(), x(), y() + h() - (p * bh), w(), bh, c );
     }
-
-    if ( value() > _peak )
-        _peak = value();
-}
-
-
-int
-VU_Meter::handle ( int m )
-{
-    switch ( m )
-    {
-        case FL_PUSH:
-            reset();
-            break;
-    }
-
-    return 0;
 }

VU_Meter.H → DPM.H

@@ -21,14 +21,10 @@
 
 #include <FL/Fl_Valuator.H> // for FL_HORIZONTAL and FL_VERTICAL
 
-class VU_Meter : public Fl_Widget
-{
-
-    float _peak;
+#include "Meter.H"
 
-    float _value;
-    float _minimum;
-    float _maximum;
+class DPM : public Meter
+{
 
     int _type;
     int _divisions;
@@ -37,27 +33,20 @@ class VU_Meter : public Fl_Widget
     Fl_Color _min_color;
     Fl_Color _max_color;
 
-    int pos ( float v ) { return ( v / _maximum ) * _divisions; }
+    int pos ( float v )
+        {
+            return deflection( v ) * _divisions;
+        }
 
 protected:
 
     virtual void draw ( void );
-    virtual int handle ( int m );
 
 public:
 
-    VU_Meter ( int X, int Y, int W, int H,  const char *L = 0 );
-
-    void maximum( float v ) { _maximum = v; redraw(); }
-    float maximum ( void ) const { return _maximum; }
-
-    void minimum ( float v ) { _minimum = v; redraw(); }
-    float minimum ( void ) const { return _minimum; }
-
-    void value ( float v ) { if ( pos( v ) != pos( _value ) ) redraw();  _value = v; }
-    float value ( void ) const { return _value; }
+    DPM ( int X, int Y, int W, int H,  const char *L = 0 );
 
-    void reset ( void ) { _peak = 0.0f; }
+//    void value ( float v ) { if ( pos( v ) != pos( value() ) )  redraw(); Meter::value( v ) }
 
     bool divisions ( void ) const { return _divisions; }
     void divisions ( int v ) { _divisions = v; }

Makefile

@@ -1,5 +1,5 @@
 
-CXXFLAGS=-ggdb -Wall -O0
+CXXFLAGS=-ggdb -Wall -O0 -fno-rtti -fno-exceptions
 #LIBS=-L/usr/lib/sox -I/usr/include/sox -lsox -lsfx
 LIBS=-lsndfile  `fltk-config --ldflags`
 # CXXFLAGS=`fltk-config -cxxflags`
@@ -26,8 +26,8 @@ $(OBJS): Makefile
 test: $(OBJS)
 	$(CXX) $(CXXFLAGS) $(LIBS) $(OBJS) -o $@
 
-mixer: Mixer_Strip.o Mixer.o
-	$(CXX) $(CXXFLAGS) $(LIBS) Mixer_Strip.o Mixer.o -o $@
+mixer: Mixer_Strip.o Mixer.o DPM.o
+	$(CXX) $(CXXFLAGS) $(LIBS) Mixer_Strip.o Mixer.o DPM.o -o $@
 
 
 ESRCS=Audio_File.C Audio_File_SF.C Loggable.C

Mixer_Strip.fl

@@ -2,7 +2,7 @@
 version 1.0108 
 header_name {.H} 
 code_name {.C}
-decl {\#include "VU_Meter.H"} {selected public global
+decl {\#include "DPM.H"} {public global
 } 
 
 widget_class Mixer_Strip {open
@@ -42,9 +42,9 @@ widget_class Mixer_Strip {open
       xywh {14 195 33 471} type {Vert Knob} color 32 selection_color 1 minimum 1.5 maximum 0 step 0.01 value 1 textsize 14
     }
     Fl_Box meter {
-      label VU
+      label DPM selected
       xywh {57 193 55 484} box ROUNDED_BOX selection_color 88
-      class VU_Meter
+      class DPM
     }
   }
   Fl_Box {} {