X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fline-interface.cc;h=3d1bb02d6f3158cf9666541ca1ce6bf0e8b932af;hb=5c9c9c0ae6cd4bed8f7a2c62b2c014f3659a188a;hp=ebaceec65c4ba2486bd147a6c18f0602d0efd34f;hpb=d640581d823b26d988046148b995e1a70f6ad735;p=lilypond.git

diff --git a/lily/line-interface.cc b/lily/line-interface.cc
index ebaceec65c..3d1bb02d6f 100644
--- a/lily/line-interface.cc
+++ b/lily/line-interface.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 2004--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 2004--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "line-interface.hh"
@@ -48,7 +48,7 @@ Line_interface::make_trill_line (Grob *me,
 					   alist_chain));
 
   Stencil elt = fm->find_by_name ("scripts.trill_element");
-
+  elt.align_to (Y_AXIS, CENTER);
   Real elt_len = elt.extent (X_AXIS).length ();
   if (elt_len <= 0.0)
     {
@@ -65,7 +65,7 @@ Line_interface::make_trill_line (Grob *me,
     }
   while (len + elt_len < dz.length ());
 
-  line.rotate (dz.arg (), Offset (0,0));
+  line.rotate (dz.arg (), Offset (LEFT, CENTER));
   line.translate (from);
 
   return line; 
@@ -111,13 +111,7 @@ Line_interface::make_zigzag_line (Grob *me,
       total.add_stencil (moved_squiggle);
     }
 
-  Box b;
-  b.add_point (Offset (0, 0));
-  b.add_point (dz);
-  b[X_AXIS].widen (thick / 2);
-  b[Y_AXIS].widen (thick / 2);
-
-  return Stencil (b, total.expr ());
+  return total;
 }
 
 
@@ -127,7 +121,7 @@ Line_interface::make_dashed_line (Real thick, Offset from, Offset to,
 {
   dash_fraction = min (max (dash_fraction, 0.0), 1.0);
   Real on = dash_fraction * dash_period + thick;
-  Real off = dash_period - on;
+  Real off = max (0.0, dash_period - on);
 
   SCM at = scm_list_n (ly_symbol2scm ("dashed-line"),
 		       scm_from_double (thick),
@@ -210,16 +204,15 @@ Line_interface::line (Grob *me, Offset from, Offset to)
   else if (type == ly_symbol2scm ("trill"))
     return make_trill_line (me, from, to);
   
-  Stencil stil;
+  Stencil stencil;
 
-  SCM dash_fraction = me->get_property ("dash-fraction");
-  if (scm_is_number (dash_fraction) || type == ly_symbol2scm ("dotted-line"))
+  if (type == ly_symbol2scm ("dashed-line") || type == ly_symbol2scm ("dotted-line"))
     {
 
       Real fraction
 	= type == ly_symbol2scm ("dotted-line")
 	? 0.0
-	: robust_scm2double (dash_fraction, 0.4);
+	: robust_scm2double (me->get_property ("dash-fraction"), 0.4);
 
       fraction = min (max (fraction, 0.0), 1.0);
       Real period = Staff_symbol_referencer::staff_space (me)
@@ -228,26 +221,36 @@ Line_interface::line (Grob *me, Offset from, Offset to)
       if (period <= 0)
 	return Stencil ();
 
-      Real len = (to-from).length();
+      Real len = (to-from).length ();
       
       int n = (int) rint ((len - period * fraction) / period);
-      period = ((to-from).length() - period * fraction) / n;
-
-      stil = make_dashed_line (thick, from, to, period, fraction);
+      n = max (0, n);
+      if (n > 0)
+	{
+	  /*
+	    TODO: figure out something intelligent for really short
+	    sections.
+	   */
+	  period = ((to-from).length () - period * fraction) / n;
+	}
+      stencil = make_dashed_line (thick, from, to, period, fraction);
     }
   else
-    stil = make_line (thick, from, to);
+    stencil = make_line (thick, from, to);
 
-  return stil;
+  return stencil;
 }
 
 ADD_INTERFACE (Line_interface,
-	       "Generic line objects. Any object using lines supports this.  Normally, "
-	       "you get a straight line. If @code{dash-period} is defined, a dashed line is "
-	       "produced; the length of the dashes is tuned with "
-	       "@code{dash-fraction}. If the latter is set to 0, a dotted line is "
-	       "produced. If @code{dash-fraction} is negative, the line is made "
-	       "transparent.",
+	       "Generic line objects.  Any object using lines supports this."
+	       "  The property @code{style} can be @code{line},"
+	       " @code{dashed-line}, @code{trill}, @code{dotted-line} or"
+	       " @code{zigzag}.\n"
+	       "\n"
+	       "For @code{dashed-line}, the length of the dashes is tuned"
+	       " with @code{dash-fraction}.  If the latter is set to@tie{}0, a"
+	       " dotted line is produced.  If @code{dash-period} is negative,"
+	       " the line is made transparent.",
 
 	       /* properties */
 	       "dash-period "