Make Dropdown menus at least as wide as the button

[ardour.git] / gtk2_ardour / logmeter.h

diff --git a/gtk2_ardour/logmeter.h b/gtk2_ardour/logmeter.h
index a244fb4bbeab2a73be15cc603182e64505ea3f9f..9ff60db0c58439b7b01685daf4a56e9485451436 100644 (file)
--- a/gtk2_ardour/logmeter.h
+++ b/gtk2_ardour/logmeter.h
@@ -20,6 +20,8 @@
 #ifndef __ardour_gtk_log_meter_h__
 #define __ardour_gtk_log_meter_h__
 
+#include "ardour/dB.h"
+
 #if 1
 static inline float
 _log_meter (float power, double lower_db, double upper_db, double non_linearity)
@@ -75,6 +77,31 @@ log_meter (float db)
          return def/115.0f;
 }
 
+static inline float
+log_meter0dB (float db)
+{
+         gfloat def = 0.0f; /* Meter deflection %age */
+
+         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 < 0.0f) {
+                 def = (db + 20.0f) * 2.5f + 50.0f;
+         } else {
+                def = 100.0f;
+        }
+       return def/100.0f;
+}
+
 static inline float
 meter_deflect_ppm (float db)
 {