QML invokable method for default scale of supported instruments

- or tuning if any kind of guitar

src/libs/core/tnootkaqml.cpp

@@ -288,6 +288,26 @@ Ttune TnootkaQML::tuning(const Tnote& s1, const Tnote& s2, const Tnote& s3, cons
 }
 
 
+Ttune TnootkaQML::defaultScale(int instr) {
+  switch (static_cast<Tinstrument::Etype>(instr)) {
+    case Tinstrument::ClassicalGuitar:
+    case Tinstrument::ElectricGuitar:
+      return Ttune::stdTune;
+    case Tinstrument::BassGuitar:
+      return Ttune::bassTunes[0];
+    case Tinstrument::Piano:
+      return tuning(Tnote(-11), Tnote(49), Tnote(), Tnote(), Tnote(), Tnote());
+    case Tinstrument::Bandoneon:
+      return tuning(Tnote(-11), Tnote(48), Tnote(), Tnote(), Tnote(), Tnote());
+    case Tinstrument::AltSax:
+    case Tinstrument::TenorSax:
+      return tuning(Tnote(11), Tnote(49), Tnote(), Tnote(), Tnote(), Tnote());
+    default: // NoInstrument and any unexpected case
+      return tuning(Tnote(10), Tnote(54), Tnote(), Tnote(), Tnote(), Tnote());
+  }
+}
+
+
 Tinstrument TnootkaQML::instr(int type) {
   return Tinstrument(static_cast<Tinstrument::Etype>(type < 0 || type > INSTR_COUNT - 1 ? 0 : type));
 }

src/libs/core/tnootkaqml.h

@@ -129,6 +129,12 @@ public:
   Q_INVOKABLE QStringList bassTunings();
   Q_INVOKABLE Ttune tuning(int tuningType);
   Q_INVOKABLE Ttune tuning(const Tnote& s1, const Tnote& s2, const Tnote& s3, const Tnote& s4, const Tnote& s5, const Tnote& s6);
+
+      /**
+       * Returns default scale (or tuning if any kind of guitar)
+       * for given @p instr instrument
+       */
+  Q_INVOKABLE Ttune defaultScale(int instr);
   Q_INVOKABLE Tinstrument instr(int type);
   Q_INVOKABLE QString getXmlToOpen();
   Q_INVOKABLE QString getXmlToSave(const QString& fileName = QString());