comparison layer/SpectrogramLayer.cpp @ 1147:1badacff7ab2 3.0-integration

Introduce labels in RangeMapper and use them in AudioDial, though only for tooltip at present. Make use of this for spectrogram magic -81dB/-Inf threshold. Also introduce static strings for inf/pi and use where appropriate.

 #include "base/Pitch.h"
 #include "base/Preferences.h"
 #include "base/RangeMapper.h"
 #include "base/LogRange.h"
 #include "base/ColumnOp.h"
+#include "base/Strings.h"
 #include "widgets/CommandHistory.h"
 #include "data/model/Dense3DModelPeakCache.h"
 
 #include "ColourMapper.h"
 #include "PianoScale.h"

 {
     if (name == "Gain") {
         return new LinearRangeMapper(-50, 50, -25, 25, tr("dB"));
     }
     if (name == "Threshold") {
-        return new LinearRangeMapper(-81, -1, -81, -1, tr("dB"));
+        return new LinearRangeMapper(-81, -1, -81, -1, tr("dB"), false,
+                                     { { -81, Strings::minus_infinity } });
     }
     return 0;
 }
 
 void

 	double dbMin = AudioLevel::multiplier_to_dB(magMin);
 	double dbMax = AudioLevel::multiplier_to_dB(magMax);
 	QString dbMinString;
 	QString dbMaxString;
 	if (dbMin == AudioLevel::DB_FLOOR) {
-	    dbMinString = tr("-Inf");
+	    dbMinString = Strings::minus_infinity;
 	} else {
 	    dbMinString = QString("%1").arg(lrint(dbMin));
 	}
 	if (dbMax == AudioLevel::DB_FLOOR) {
-	    dbMaxString = tr("-Inf");
+	    dbMaxString = Strings::minus_infinity;
 	} else {
 	    dbMaxString = QString("%1").arg(lrint(dbMax));
 	}
 	if (lrint(dbMin) != lrint(dbMax)) {
 	    text += tr("dB:\t%1 - %2").arg(dbMinString).arg(dbMaxString);

     int topLines = 1;
 
     int ch = h - textHeight * (topLines + 1) - 8;
     paint.drawRect(4 + cw - cbw, textHeight * topLines + 4, cbw - 1, ch + 1);
 
-    QString top, bottom, middle;
-    top = QString("%1").arg(QChar(0x3c0)); // pi
-    bottom = "-" + top;
-    middle = "0";
+    QString top = Strings::pi, bottom = Strings::minus_pi, middle = "0";
     
     double min = -M_PI;
     double max =  M_PI;
 
     paint.drawText(3 + cw - cbw - paint.fontMetrics().width(top),