Partial support for ties and keysigns in lilypond. Lilypond syntax changed again

engine/items.py

@@ -571,7 +571,7 @@ class Duration(object):
         else:
             append = ""
         
-        n = self.genericNumber
+        n = self.genericNumber        
         if n == 0:
             return "\\breve" + append
         elif n == -1:
@@ -1701,13 +1701,15 @@ class Chord(Item):
 
             substrings = []
             minimumTicksInChord = self.durationGroup.completeDuration()
-            for (ticks, lilydur), lst in table.items():
+            for (ticks, lilydur), lst in table.items():                
                 #factor = Fraction(ticks, minimumDurInChord).limit_denominator(100000) #protects 6 or 7 decimal positions
                 #dur = lilydur + " * {}/{}".format(factor.denominator, factor.numerator)  #lilypond requires the 1/x syntax
                 assert int(ticks) == ticks, ticks
                 assert int(minimumTicksInChord) == minimumTicksInChord, minimumTicksInChord
-                assert minimumTicksInChord <= ticks
-                dur = lilydur + " * {}/{}".format(int(minimumTicksInChord), int(ticks))  #lilypond requires the x/y syntax, even if it is 1/x
+                assert minimumTicksInChord <= ticks                
+                if lilydur.endswith("~"):
+                    lilydur = lilydur[:-1] #without ~ #TODO: not supported yet.
+                dur = lilydur + " * {}/{}".format(int(minimumTicksInChord), int(ticks))  #lilypond requires the x/y syntax, even if it is 1/y #TODO: this is very ugly
                 substrings.append("\\\\ { <" + " ".join(lst) + ">" + dur + "  }" )
             result = "<<" + " ".join(substrings) + ">>"
             return result
@@ -2148,13 +2150,23 @@ class KeySignature(Item):
                 return ""
 
         #G Major ((3, 10), (0, 0), (4, 0), (1, 0), (5, 0), (2, 0), (6, 0))
-        #`((0 . ,NATURAL) (1 . ,NATURAL) (2 . ,NATURAL) (3 . ,SHARP) (4 . ,NATURAL) (5 . ,NATURAL) (6 . ,NATURAL))
-
-        schemepairs = " ".join(build(x[0], x[1]) for x in self.keysigList)
+        #`((0 . ,NATURAL) (1 . ,NATURAL) (2 . ,NATURAL) (3 . ,SHARP) (4 . ,NATURAL) (5 . ,NATURAL) (6 . ,NATURAL))     
+        schemepairs = " ".join(build(x[0], x[1]) for x in self.keysigList)        
         schemepairs = " ".join(schemepairs.split()) # split and join again to reduce all whitespaces to single ones.
         subtextRoot = "\\once \\override Staff.KeySignature #'stencil = #(lambda (grob) (ly:stencil-combine-at-edge (ly:key-signature-interface::print grob) Y DOWN (grob-interpret-markup grob (markup #:small \"" + pitchmath.pitch2ly[self.root].strip(",").title() + "\")) 3)) " #3 is the space between keysig and text
-        lyKeysignature = subtextRoot + "\\set Staff.keySignature = #`( {} )".format(schemepairs)
-        return lyKeysignature
+        lyKeysignature = subtextRoot + "\\set Staff.keyAlterations = #`( {} )".format(schemepairs)
+        return lyKeysignature            
+        
+        #Alternative
+        schemepairs = " ".join(build(num, alt) for num, alt in enumerate(self.deviationFromMajorScale))        
+        schemepairs = " ".join(schemepairs.split()) # split and join again to reduce all whitespaces to single ones.
+        subtextRoot = "\\once \\override Staff.KeySignature #'stencil = #(lambda (grob) (ly:stencil-combine-at-edge (ly:key-signature-interface::print grob) Y DOWN (grob-interpret-markup grob (markup #:small \"" + pitchmath.pitch2ly[self.root].strip(",").title() + "\")) 3)) " #3 is the space between keysig and text
+        if schemepairs:            
+            lyKeysignature = subtextRoot + f"\\key {pitchmath.pitch2ly[self.root].strip(',')}  #`( {schemepairs} )"
+        else: #no explicit accidental            
+            lyKeysignature = subtextRoot +  "\\set Staff.keyAlterations = #`(( 0 . ,NATURAL))" #TODO: subtextRoot position is broken                    
+        return lyKeysignature                
+        
 
 class Clef(Item):
     """A clef has no direct musical logical meaning. But it gives some hints:

engine/resources/lilypondTemplates/default.ly

@@ -69,7 +69,10 @@ correctFraction = #(lambda (grob)
     %Exchange note_heads_engraver with the completition variant which auto-ties notes on bar-breaks
     \remove "Note_heads_engraver"
     \consists "Completion_heads_engraver"
+    \remove "Rest_engraver"
+    \consists "Completion_rest_engraver"    
     tieWaitForNote = ##t
+    
   }
   \context { \Staff
     \RemoveEmptyStaves

template

@@ -1 +1 @@
-Subproject commit ff789798793af4981fe81b9d6f769a975735faea
+Subproject commit bb6ae017b284957b6e1e3756599ba17aefc3322a