Imported Upstream version 2.16.0

[lilypond.git] / scm / tablature.scm

diff --git a/scm/tablature.scm b/scm/tablature.scm
index c26af257c8df13b1c14161a7314a6c201ffd99a7..3304e24af78a4f9a5b5f4168037a264240cdce4b 100644 (file)
--- a/scm/tablature.scm
+++ b/scm/tablature.scm
@@ -1,6 +1,6 @@
 ;;;; This file is part of LilyPond, the GNU music typesetter.
 ;;;;
-;;;; Copyright (C) 2009--2011 Marc Hohl <marc@hohlart.de>
+;;;; Copyright (C) 2009--2012 Marc Hohl <marc@hohlart.de>
 ;;;;
 ;;;; LilyPond is free software: you can redistribute it and/or modify
 ;;;; it under the terms of the GNU General Public License as published by
@@ -78,6 +78,16 @@
 
 ;; if stems are drawn, it is nice to have a double stem for
 ;; (dotted) half notes to distinguish them from quarter notes:
+(define-public (tabvoice::make-double-stem-width-for-half-notes grob)
+  (let ((X-extent (ly:stem::width grob)))
+
+    ;; is the note a (dotted) half note?
+    (if (= 1 (ly:grob-property grob 'duration-log))
+        ;; yes -> return double stem width
+        (cons (car X-extent) (+ 0.5 (* 2 (cdr X-extent))))
+        ;; no -> return simple stem width
+        X-extent)))
+
 (define-public (tabvoice::draw-double-stem-for-half-notes grob)
   (let ((stem (ly:stem::print grob)))
 
@@ -97,7 +107,7 @@
          (left-pitch (ly:event-property (event-cause left-bound) 'pitch))
          (right-pitch (ly:event-property (event-cause right-bound) 'pitch)))
 
-    (if (< (ly:pitch-semitones right-pitch) (ly:pitch-semitones left-pitch))
+    (if (< (ly:pitch-tones right-pitch) (ly:pitch-tones left-pitch))
         -0.75
         0.75)))