more time signatures with better lilypond export

engine/api.py

@@ -1972,22 +1972,31 @@ def setInitialMetricalInstruction(treeOfInstructions, lilypondOverride:str=None)
 
 
 def commonMetricalInstructionsAsList():
-    """for musical reasons 5/4 and 7/8 and other a-symetrical
+    """This is the order in which they appear in various GUI menus"""
-    metrical instructions cannot be in here since it is unknown which
+
-    internal version the user wants. And we don't want to pollute this with all possible
-    permutations like 5/4: 3+2+2;  5/4: 2+3+2 etc."""
     return [
         "off",
+
+        "2/4",
         "4/4",
+        "8/4 (2x 4/4)",
+
         "3/4",
-        "6/8",
+        "3/2",
-        "2/4",
+        "6/4 (3x 2/4)",
-        "12/8",
+        "6/4 (2x 3/4)",
-        "6/4",
+
         "3/8",
+        "6/8 (2x 3/8)",
+        "12/8 (4x 3/8)",
+
+        "7/8 (3+2+2)",
+        "7/8 (2+3+2)",
+        "7/8 (2+2+3)",
+        "5/4 (3+2)",
+        "5/4 (2+3)",
+
         "1/1",
-        "3/2",
-        "8/4",
         ]
 
 def insertCommonMetricalInstrucions(scheme, setInitialInsteadCursorInsert=False):
@@ -1995,29 +2004,52 @@ def insertCommonMetricalInstrucions(scheme, setInitialInsteadCursorInsert=False)
     they will not work when exported."""
     schemes = {
         "off" : (),
+
         "2/4" : (D4, D4),
-        "3/4" : (D4, D4, D4),
         "4/4" : ((D4, D4), (D4, D4)),
-        "6/8" : (int(D4*1.5),int(D4*1.5)), #aka 2/4 with triplet sub-level
+        "8/4 (2x 4/4)" : (((D4, D4), (D4, D4)), ((D4, D4), (D4, D4))), #combination of two 4/4 but the "second measure" is not as important.
-        "12/8" : ((D8, D8, D8), (D8, D8, D8), (D8, D8, D8), (D8, D8, D8)),  #aka 4/4 with triplet sub-level
+
-        "6/4" : ((D4, D4, D4),(D4, D4, D4)),
+        "3/4" : (D4, D4, D4),
+        "3/2" : (D2, D2, D2),
+        "6/4 (3x 2/4)" : ((D4, D4),(D4, D4),(D4, D4),),
+        "6/4 (2x 3/4)" : ((D4, D4, D4),(D4, D4, D4)),
+
         "3/8" : (D8, D8, D8),
+        "6/8 (2x 3/8)" : (int(D4*1.5),int(D4*1.5)), #aka 2/4 with triplet sub-level
+        "12/8 (4x 3/8)" : ((D8, D8, D8), (D8, D8, D8), (D8, D8, D8), (D8, D8, D8)),  #aka 4/4 with triplet sub-level
+
+        "7/8 (3+2+2)" : ((D8, D8, D8), (D8, D8), (D8, D8)),
+        "7/8 (2+3+2)" : ((D8, D8), (D8, D8, D8), (D8, D8)),
+        "7/8 (2+2+3)" : ((D8, D8), (D8, D8), (D8, D8, D8)),
+        "5/4 (3+2)" : ((D4, D4, D4), (D4, D4)),
+        "5/4 (2+3)" : ((D4, D4), (D4, D4, D4)),
+
         "1/1" : (D1,),
-        "3/2" : (D2, D2, D2),
-        "8/4" : (((D4, D4), (D4, D4)), ((D4, D4), (D4, D4))), #combination of two 4/4 but the "second measure" is not as important.
         }
+
     lilypond = {
-        "off" : "\\mark \"X\" \\cadenzaOn",
+        "off" :             "\\mark \"X\" \\cadenzaOn",
-        "2/4" : "\\cadenzaOff \\time 2/4",
+
-        "3/4" : "\\cadenzaOff \\time 3/4",
+        "2/4" :             "\\cadenzaOff \\time 2/4",
-        "4/4" : "\\cadenzaOff \\time 4/4",
+        "4/4" :             "\\cadenzaOff \\time 4/4",
-        "6/8" : "\\cadenzaOff \\time 6/8",
+        "8/4 (2x 4/4)" :    "\\cadenzaOff \\time 8/4",
-        "12/8" : "\\cadenzaOff \\time 12/8",
+
-        "6/4" : "\\cadenzaOff \\time 6/4",
+        "3/4" :             "\\cadenzaOff \\time 3/4",
-        "3/8" : "\\cadenzaOff \\time 3/8",
+        "3/2" :             "\\cadenzaOff \\time 3/2",
-        "1/1" : "\\cadenzaOff \\time 1/1",
+        "6/4 (3x 2/4)" :    "\\cadenzaOff \\time 2,2,2 6/4",
-        "3/2" : "\\cadenzaOff \\time 3/2",
+        "6/4 (2x 3/4)" :    "\\cadenzaOff \\time 3,3 6/4",
-        "8/4" : "\\cadenzaOff \\time 8/4",
+
+        "3/8" :             "\\cadenzaOff \\time 3/8",
+        "6/8 (2x 3/8)" :    "\\cadenzaOff \\time 6/8",
+        "12/8 (4x 3/8)" :   "\\cadenzaOff \\time 12/8",
+
+        "7/8 (3+2+2)" :     "\\cadenzaOff \\time 3,2,2 7/8",
+        "7/8 (2+3+2)" :     "\\cadenzaOff \\time 2,3,2 7/8",
+        "7/8 (2+2+3)" :     "\\cadenzaOff \\time 2,2,3 7/8",
+        "5/4 (3+2)" :       "\\cadenzaOff \\time 3,2 5/4",
+        "5/4 (2+3)" :       "\\cadenzaOff \\time 2,3 5/4",
+
+        "1/1" :             "\\cadenzaOff \\time 1/1",
         }
 
     if setInitialInsteadCursorInsert: