* scm/page-layout.scm (plain-header): add printpagenumber boolean

[lilypond.git] / lily / staff-symbol.cc

diff --git a/lily/staff-symbol.cc b/lily/staff-symbol.cc
index 7ba3c9e235f6503aa9f12d0034afefde93e87dd7..691f86a577c96bd06363122f7fc826fd24e120f1 100644 (file)
--- a/lily/staff-symbol.cc
+++ b/lily/staff-symbol.cc
@@ -1,79 +1,136 @@
 /*
-  staffsym.cc -- implement Staff_symbol
+  staff-symbol.cc -- implement Staff_symbol
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2004 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 "stencil.hh"
+#include "warn.hh"
 #include "item.hh"
+#include "staff-symbol.hh"
+#include "staff-symbol-referencer.hh"
+#include "spanner.hh"
 
 
-Staff_symbol::Staff_symbol ()
-{
-  no_lines_i_ = 5;
-  staff_space_ = 5.0 PT;
-}
 
-void
-Staff_symbol::do_print() const
+MAKE_SCHEME_CALLBACK (Staff_symbol,print,1);
+
+SCM
+Staff_symbol::print (SCM smob)
 {
-#ifndef NPRINT
-  Spanner::do_print();
-  DEBUG_OUT << "lines: " << no_lines_i_;
-#endif
-}
+  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.
 
-Molecule*
-Staff_symbol::do_brew_molecule_p() const
-{
-  Score_element * common
-    = spanned_drul_[LEFT]->common_refpoint (spanned_drul_[RIGHT], X_AXIS);
+    (ok -- lousy UI, since width is in staff spaces)
 
-#if 0
-  Interval r =  spanned_drul_[RIGHT]->extent (X_AXIS);
-  Interval l =  spanned_drul_[LEFT]->extent (X_AXIS);
-  
-  Real left_shift =l.empty_b () ? 0.0: l[LEFT];
-  Real right_shift =r.empty_b () ? 0.0: r[RIGHT];  
-#endif
-  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");
-  Molecule rule  = lookup_l ()->filledbox (Box (Interval (0,width),
-                                               Interval (-t/2, t/2)));
-
-  Real height = (no_lines_i_-1) * staff_space_ /2;
-  Molecule * m = new Molecule;
-  for (int i=0; i < no_lines_i_; i++)
+    --hwn.
+   */
+  Direction d = LEFT;
+  do
     {
-      Molecule a (rule);
-      a.translate_axis (height - i * staff_space_, Y_AXIS);
-      m->add_molecule (a);
+      SCM width_scm = me->get_property ("width");
+      if (d == RIGHT && ly_c_number_p (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] = ly_scm2double (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];
+       }
     }
+  while (flip (&d) !=LEFT);
+
 
-  //  m->translate_axis (left_shift, X_AXIS);
-  return m;
+  Real t = me->get_paper ()->get_dimension (ly_symbol2scm ("linethickness"));
+  t *= robust_scm2double (me->get_property ("thickness"), 1.0);
+  
+  int l = Staff_symbol::line_count (me);
+  
+  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::get_steps (Grob*me) 
+{
+  return line_count (me) * 2;
+}
 
 int
-Staff_symbol::steps_i() const
+Staff_symbol::line_count (Grob*me) 
 {
-  return no_lines_i_*2;
+  SCM c = me->get_property ("line-count");
+  if (ly_c_number_p (c))
+    return ly_scm2int (c);
+  else
+    return 0;
 }
+
 Real
-Staff_symbol::staff_space ()
+Staff_symbol::staff_space (Grob*me)
 {
-  return staff_space_;
+  return robust_scm2double (me->get_property ("staff-space"), 1.0);
 }
+
+Real
+Staff_symbol::get_line_thickness (Grob* me)
+{
+  Real lt =  me->get_paper ()->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");