Fixes broken glissando bug and adds a regtest for broken glissandos.

[lilypond.git] / lily / line-spanner.cc

diff --git a/lily/line-spanner.cc b/lily/line-spanner.cc
index 322a4834bd122589c71fffb9d56c05b571610fc5..0235243628b0dc1a74a9cab08c1d462b14a3bb42 100644 (file)
--- a/lily/line-spanner.cc
+++ b/lily/line-spanner.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2000--2010 Jan Nieuwenhuizen <janneke@gnu.org>
+  Copyright (C) 2000--2011 Jan Nieuwenhuizen <janneke@gnu.org>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -267,7 +267,7 @@ Line_spanner::print (SCM smob)
       common_y[d] = unsmob_grob (ly_assoc_get (ly_symbol2scm ("common-Y"),
                                               bounds[d], SCM_BOOL_F));
       if (!common_y[d])
-       common_y[d] = me; 
+       common_y[d] = me;
     }
   while (flip (&d) != LEFT);
 
@@ -276,6 +276,12 @@ Line_spanner::print (SCM smob)
     span_points[d][Y_AXIS] += common_y[d]->relative_coordinate (my_common_y, Y_AXIS);
   while (flip (&d) != LEFT);
 
+  Interval normalized_endpoints = robust_scm2interval (me->get_property ("normalized-endpoints"), Interval (0, 1));
+  Real y_length = span_points[RIGHT][Y_AXIS] - span_points[LEFT][Y_AXIS];
+
+  span_points[LEFT][Y_AXIS] += normalized_endpoints[LEFT] * y_length;
+  span_points[RIGHT][Y_AXIS] -= (1 - normalized_endpoints[RIGHT]) * y_length;
+
   Offset dz = (span_points[RIGHT] - span_points[LEFT]);
   Offset dz_dir = dz.direction ();
   if (gaps[LEFT] + gaps[RIGHT] > dz.length ())
@@ -300,7 +306,7 @@ Line_spanner::print (SCM smob)
          SCM off = ly_assoc_get (ly_symbol2scm ("stencil-offset"),
                                  bounds[d], SCM_BOOL_F);
 
-         if (scm_is_number (align)) 
+         if (scm_is_number (align))
            s.align_to (Y_AXIS, scm_to_double (align));
 
          if (is_number_pair (off))
@@ -326,7 +332,7 @@ Line_spanner::print (SCM smob)
   if (line_right[X_AXIS] > line_left[X_AXIS])
     {
       line.add_stencil (Line_interface::line (me, line_left, line_right));
- 
+
       line.add_stencil (Line_interface::arrows (me,
                                                span_points[LEFT],
                                                span_points[RIGHT],