X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Flyric-extender.cc;h=f9c1f0b47d2f1b14660bc9ec500c4255700176e7;hb=913f4a33e9b60b94e673ae48c1fb299f1465b4ad;hp=744e3d6e2174f3719b1e55def8fd0a0adfb9d7b6;hpb=7249d131a7b58117ad502f17975af50ea4144a05;p=lilypond.git

diff --git a/lily/lyric-extender.cc b/lily/lyric-extender.cc
index 744e3d6e21..f9c1f0b47d 100644
--- a/lily/lyric-extender.cc
+++ b/lily/lyric-extender.cc
@@ -2,59 +2,88 @@
   lyric-extender.cc -- implement Lyric_extender
   source file of the GNU LilyPond music typesetter
 
-  (c)  1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
+  (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
   Han-Wen Nienhuys
 */
 
+#include "lyric-extender.hh"
+
 
-#include "box.hh"
-#include "debug.hh"
+#include "warn.hh"
 #include "lookup.hh"
-#include "molecule.hh"
 #include "paper-column.hh"
-#include "paper-def.hh"
-#include "lyric-extender.hh"
+#include "output-def.hh"
+#include "note-head.hh"
+#include "pointer-group-interface.hh"
 
-
-MAKE_SCHEME_CALLBACK(Lyric_extender,brew_molecule,1)
-SCM 
-Lyric_extender::brew_molecule (SCM smob) 
+MAKE_SCHEME_CALLBACK (Lyric_extender, print, 1)
+  SCM
+Lyric_extender::print (SCM smob)
 {
-  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 = sp->paper_l ()->get_var ("staffspace");
-  Real sl = sp->paper_l ()->get_var ("stafflinethickness");  
-  Real righttrim = 0.5; // default to half a staffspace 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;
-  
-  Real h = sl * gh_scm2double (sp->get_elt_property  ("height"));
-  Molecule  mol (sp->lookup_l ()->filledbox ( Box (Interval (0,w), Interval (0,h))));
-  mol.translate (Offset (leftext, 0));
-  return mol.create_scheme();
-}
+  Spanner *me = unsmob_spanner (smob);
+  Item *left_edge = me->get_bound (LEFT);
+  Item *right_text = unsmob_item (me->get_object ("next"));
 
-void
-Lyric_extender::set_textitem (Direction d, Score_element*s)
-{
-  elt_l_->set_bound (d, s);
-  elt_l_->add_dependency (s);
-}
+  Grob *common = left_edge;
 
-Lyric_extender::Lyric_extender (Spanner*s)
-{
-  elt_l_ = s;
+  if (right_text)
+    common = common->common_refpoint (right_text, X_AXIS);
+
+  common = common->common_refpoint (me->get_bound (RIGHT), X_AXIS);
+  Real sl = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
+
+  extract_grob_set (me, "heads", heads);
+
+  if (!heads.size ())
+    return SCM_EOL;
+
+  common = common_refpoint_of_array (heads, common, X_AXIS);
+
+  Real left_point = 0.0;
+  if (left_edge->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
+    left_point = left_edge->extent (common, X_AXIS)[RIGHT];
+  else if (heads.size ())
+    left_point = heads[0]->extent (common, X_AXIS)[LEFT];
+  else
+    left_point = left_edge->extent (common, X_AXIS)[RIGHT];
+
+  if (isinf (left_point))
+    return SCM_EOL;
+
+  /* It seems that short extenders are even lengthened to go past the
+     note head, but haven't found a pattern in it yet. --hwn 1/1/04  */
+  SCM minlen = me->get_property ("minimum-length");
+  Real right_point
+    = left_point + (robust_scm2double (minlen, 0));
+
+  if (heads.size ())
+    right_point = max (right_point, heads.top ()->extent (common, X_AXIS)[RIGHT]);
+
+  Real h = sl * robust_scm2double (me->get_property ("thickness"), 0);
+  Real pad = 2* h;
+
+  if (right_text)
+    right_point = min (right_point, (robust_relative_extent (right_text, common, X_AXIS)[LEFT] - pad));
+
+  /* run to end of line. */
+  if (me->get_bound (RIGHT)->break_status_dir ())
+    right_point = max (right_point, (robust_relative_extent (me->get_bound (RIGHT), common, X_AXIS)[LEFT] - pad));
+
+  left_point += pad;
+  Real w = right_point - left_point;
+
+  if (w < 1.5 * h)
+    return SCM_EOL;
+
+  Stencil mol (Lookup::round_filled_box (Box (Interval (0, w),
+					      Interval (0, h)),
+					 0.8 * h));
+  mol.translate_axis (left_point - me->relative_coordinate (common, X_AXIS),
+		      X_AXIS);
+  return mol.smobbed_copy ();
 }
 
+ADD_INTERFACE (Lyric_extender, "lyric-extender-interface",
+	       "The extender is a simple line at the baseline of the lyric "
+	       "that helps show the length of a melissima (tied/slurred note).",
+	       "next thickness heads");