X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstaff-symbol.cc;h=b57d1191d43a910df22f033ce4248e1a7dae9022;hb=d11056c687720e610a40f69e6f6ec32525751ff2;hp=21123e75d96de75f9bfe88e3bd1e97fc08f37a2a;hpb=ffe548cfbb3c3b37c8969f49b5aba04ef998d080;p=lilypond.git

diff --git a/lily/staff-symbol.cc b/lily/staff-symbol.cc
index 21123e75d9..b57d1191d4 100644
--- a/lily/staff-symbol.cc
+++ b/lily/staff-symbol.cc
@@ -1,64 +1,133 @@
 /*
-  staffsym.cc -- implement Staff_symbol
+  staff-symbol.cc -- implement Staff_symbol
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
+
 #include "staff-symbol.hh"
+
 #include "lookup.hh"
 #include "dimensions.hh"
-#include "paper-def.hh"
-#include "molecule.hh"
-#include "debug.hh"
+#include "output-def.hh"
+#include "warn.hh"
 #include "item.hh"
+#include "staff-symbol-referencer.hh"
+#include "spanner.hh"
 
+MAKE_SCHEME_CALLBACK (Staff_symbol, print, 1);
 
-
-Molecule 
-Staff_symbol::do_brew_molecule() const
+SCM
+Staff_symbol::print (SCM smob)
 {
-  Score_element * common
-    = spanned_drul_[LEFT]->common_refpoint (spanned_drul_[RIGHT], X_AXIS);
-  
-  Real width =
-    // right_shift     - left_shift
-    + spanned_drul_[RIGHT]->relative_coordinate (common , X_AXIS)
-    - spanned_drul_[LEFT]->relative_coordinate (common, X_AXIS)
-    ;
-
-  Real t = paper_l ()->get_var ("stafflinethickness");
-  int l = line_count ();
-  
-  Real height = (l-1) * staff_space () /2;
-  Molecule  m;
-  for (int i=0; i < l; i++)
+  Grob *me = unsmob_grob (smob);
+  Spanner *sp = dynamic_cast<Spanner *> (me);
+  Grob *common
+    = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
+
+  Interval span_points (0, 0);
+
+  /*
+    For raggedright without ragged staffs, simply set width to the linewidth.
+
+    (ok -- lousy UI, since width is in staff spaces)
+
+    --hwn.
+  */
+  Real t = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
+  t *= robust_scm2double (me->get_property ("thickness"), 1.0);
+
+  Direction d = LEFT;
+  do
     {
-      Molecule a =
-	lookup_l ()->filledbox (Box (Interval (0,width),
-				     Interval (-t/2, t/2)));
+      SCM width_scm = me->get_property ("width");
+      if (d == RIGHT && scm_is_number (width_scm))
+	{
+	  /*
+	    don't multiply by Staff_symbol_referencer::staff_space (me),
+	    since that would make aligning staff symbols of different sizes to
+	    one right margin hell.
+	  */
+	  span_points[RIGHT] = scm_to_double (width_scm);
+	}
+      else
+	{
+	  Item *x = sp->get_bound (d);
+
+	  span_points[d] = x->relative_coordinate (common, X_AXIS);
+	  if (!x->break_status_dir ()
+	      && !x->extent (x, X_AXIS).is_empty ())
+	    span_points[d] += x->extent (x, X_AXIS)[d];
+	}
 
-      a.translate_axis (height - i * staff_space (), Y_AXIS);
-      m.add_molecule (a);
+      span_points[d] -= d* t / 2;
     }
+  while (flip (&d) != LEFT);
+
+  int l = Staff_symbol::line_count (me);
 
-  return m;
+  Real height = (l - 1) * staff_space (me) / 2;
+  Stencil a
+    = Lookup::horizontal_line (span_points
+			       -me->relative_coordinate (common, X_AXIS),
+			       t);
+
+  Stencil m;
+  for (int i = 0; i < l; i++)
+    {
+      Stencil b (a);
+      b.translate_axis (height - i * staff_space (me), Y_AXIS);
+      m.add_stencil (b);
+    }
+  return m.smobbed_copy ();
 }
 
 int
-Staff_symbol::steps_i() const
+Staff_symbol::get_steps (Grob *me)
 {
-  return line_count () * 2;
+  return line_count (me) * 2;
 }
 
 int
-Staff_symbol::line_count () const
+Staff_symbol::line_count (Grob *me)
 {
-  return gh_scm2int (get_elt_property ("line-count"));
+  SCM c = me->get_property ("line-count");
+  if (scm_is_number (c))
+    return scm_to_int (c);
+  else
+    return 0;
 }
 
 Real
-Staff_symbol::staff_space ()const
+Staff_symbol::staff_space (Grob *me)
 {
-  return gh_scm2double (get_elt_property ("staff-space"));
+  return robust_scm2double (me->get_property ("staff-space"), 1.0);
 }
+
+Real
+Staff_symbol::get_line_thickness (Grob *me)
+{
+  Real lt = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
+
+  return robust_scm2double (me->get_property ("thickness"), 1.0) * lt;
+}
+
+Real
+Staff_symbol::get_ledger_line_thickness (Grob *me)
+{
+  SCM lt_pair = me->get_property ("ledger-line-thickness");
+  Offset z = robust_scm2offset (lt_pair, Offset (1.0, 0.1));
+
+  return z[X_AXIS] * get_line_thickness (me) + z[Y_AXIS] * staff_space (me);
+}
+
+ADD_INTERFACE (Staff_symbol, "staff-symbol-interface",
+	       "This spanner draws the lines of a staff. "
+	       "A staff symbol definines a vertical unit, the staff space. "
+	       "Quantities that go by a half staff space are called positions "
+	       "The center (i.e. middle line "
+	       "or space) is position 0. The length of the symbol may be set by hand "
+	       "through the @code{width} property. ",
+
+	       "ledger-line-thickness width staff-space thickness line-count");