release: 1.3.101

[lilypond.git] / lily / lyric-extender.cc

diff --git a/lily/lyric-extender.cc b/lily/lyric-extender.cc
index 879fa63772e81f72b36b0f0d80cf21c6f2b0415b..cd207ce9cab7505cbac703bbca386f355b83a222 100644 (file)
--- a/lily/lyric-extender.cc
+++ b/lily/lyric-extender.cc
@@ -3,78 +3,58 @@
   source file of the GNU LilyPond music typesetter
 
   (c)  1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
+  Han-Wen Nienhuys
 */
 
-/*
-  TODO: too complicated implementation.  Why the dx_drul?.
- */
 
-#
-#include "dimension-cache.hh"
 #include "box.hh"
 #include "debug.hh"
 #include "lookup.hh"
 #include "molecule.hh"
 #include "paper-column.hh"
 #include "paper-def.hh"
-#include "extender-spanner.hh"
-
-Lyric_extender::Lyric_extender (SCM s)
-  : Spanner (s)
-
-{
-  dx_f_drul_[LEFT] = dx_f_drul_[RIGHT] = 0.0;
-  set_extent_callback (Score_element::point_dimension_callback, Y_AXIS);
-}
+#include "lyric-extender.hh"
 
 
-
-
-MAKE_SCHEME_SCORE_ELEMENT_CALLBACKS(Lyric_extender)
-Molecule 
-Lyric_extender::do_brew_molecule () const
+MAKE_SCHEME_CALLBACK(Lyric_extender,brew_molecule,1)
+SCM 
+Lyric_extender::brew_molecule (SCM smob) 
 {
-  Molecule  mol;
-
-  Real w = spanner_length ();
+  Spanner *sp = dynamic_cast<Spanner*> (unsmob_element (smob));
+
+  // ugh: refp
+  Real leftext = sp->get_bound (LEFT)->extent (sp->get_bound (LEFT),
+                                              X_AXIS).length ();
+  Real ss = 1.0;
+  Real sl = sp->paper_l ()->get_var ("stafflinethickness");  
+  Real righttrim = 0.5; // default to half a space gap on the right
+  SCM righttrim_scm = sp->get_elt_property("right-trim-amount");
+  if (gh_number_p (righttrim_scm)) {
+    righttrim = gh_scm2double (righttrim_scm);
+  }
+  // The extender can exist in the word space of the left lyric ...
+  SCM space =  sp->get_bound (LEFT)->get_elt_property ("word-space");
+  if (gh_number_p (space))
+    {
+      leftext -=  gh_scm2double (space)*ss;
+    }
+  Real w = sp->spanner_length () - leftext - righttrim*ss;
   
-  w += (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT]);
-  Real h = paper_l ()->get_var ("extender_height");
-  Molecule a = lookup_l ()->filledbox ( Box (Interval (0,w), Interval (0,h)));
-  a.translate (Offset (dx_f_drul_[LEFT], 0));
-
-  mol.add_molecule (a);
-
-  return mol;
+  Real h = sl * gh_scm2double (sp->get_elt_property  ("height"));
+  Molecule  mol (Lookup::filledbox ( Box (Interval (0,w), Interval (0,h))));
+  mol.translate (Offset (leftext, 0));
+  return mol.create_scheme();
 }
 
-
-
 void
-Lyric_extender::after_line_breaking ()
+Lyric_extender::set_textitem (Direction d, Score_element*s)
 {
-  // UGH
-  Real gap = paper_l ()->get_var ("interline");
-
-  Direction d = LEFT;
-  do
-    {
-      Item* t = get_bound (d)
-       ? get_bound (d) : get_bound ((Direction)-d);
-      if (d == LEFT)
-        dx_f_drul_[d] += t->extent (X_AXIS).length ();
-      else
-       dx_f_drul_[d] -= d * gap / 2;
-    }
-  while (flip(&d) != LEFT);
+  elt_l_->set_bound (d, s);
+  elt_l_->add_dependency (s);
 }
 
-  
-void
-Lyric_extender::set_textitem (Direction d, Item* textitem_l)
+Lyric_extender::Lyric_extender (Spanner*s)
 {
-  set_bound (d, textitem_l);
-  add_dependency (textitem_l);
+  elt_l_ = s;
 }
 
-