/*
- 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--2002 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 "item.hh"
+#include "staff-symbol.hh"
+#include "staff-symbol-referencer.hh"
+#include "spanner.hh"
-Molecule
-Staff_symbol::do_brew_molecule() const
+MAKE_SCHEME_CALLBACK (Staff_symbol,brew_molecule,1);
+
+SCM
+Staff_symbol::brew_molecule (SCM smob)
{
- Score_element * common
- = get_bound (LEFT)->common_refpoint (get_bound (RIGHT), X_AXIS);
+ 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);
+
+ bool paper_raggedright = to_boolean (me->paper_l ()->get_scmvar ("raggedright"));
+ bool grob_raggedright = to_boolean (me->get_grob_property ("ragged-right"));
+ Real width;
+
+ SCM width_scm = me->get_grob_property ("width");
+ if (gh_number_p (width_scm)) // user-defined width
+ {
+ width = gh_scm2double (width_scm) *
+ Staff_symbol_referencer::staff_space (me);
+ }
+ else // determine width automatically
+ {
+ if (paper_raggedright && !grob_raggedright)
+ {
+ // *prevent* staff symbol from being ragged right; instead, use
+ // paper variable "linewidth"
+ width = me->paper_l ()->get_var ("linewidth");
+ }
+ else // determine width from my own bounds
+ {
+ width = sp->get_bound (RIGHT)->relative_coordinate (common , X_AXIS);
+ }
+ }
+
+ // respect indentation, if any
+ width -= sp->get_bound (LEFT)->relative_coordinate (common, X_AXIS);
+
+ if (width < 0)
+ {
+ warning (_f ("staff symbol: indentation yields beyond end of line"));
+ width = 0;
+ }
+
+ Real t = me->paper_l ()->get_var ("linethickness");
+ SCM my_thick = me->get_grob_property("thickness");
+ if (gh_number_p(my_thick))
+ t *= gh_scm2double (my_thick);
- Real width =
- // right_shift - left_shift
- + get_bound (RIGHT)->relative_coordinate (common , X_AXIS)
- - get_bound (LEFT)->relative_coordinate (common, X_AXIS)
- ;
-
- Real t = paper_l ()->get_var ("stafflinethickness");
- int l = line_count ();
+ int l = Staff_symbol::line_count (me);
- Real height = (l-1) * staff_space () /2;
- Molecule m;
+ Real height = (l-1) * staff_space (me) /2;
+ Molecule m;
for (int i=0; i < l; i++)
{
Molecule a =
- lookup_l ()->filledbox (Box (Interval (0,width),
- Interval (-t/2, t/2)));
+ Lookup::filledbox (Box (Interval (0,width),
+ Interval (-t/2, t/2)));
- a.translate_axis (height - i * staff_space (), Y_AXIS);
+ a.translate_axis (height - i * staff_space (me), Y_AXIS);
m.add_molecule (a);
}
- return m;
+ return m.smobbed_copy ();
}
int
-Staff_symbol::steps_i() const
+Staff_symbol::steps_i (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_grob_property ("line-count");
+ if (gh_number_p (c))
+ return gh_scm2int (c);
+ else
+ return 0;
}
Real
-Staff_symbol::staff_space ()const
+Staff_symbol::staff_space (Grob*me)
{
- return gh_scm2double (get_elt_property ("staff-space")) *
- paper_l ()->get_var ("staffspace");
+ Real ss = 1.0;
+
+ SCM s = me->get_grob_property ("staff-space");
+ if (gh_number_p (s))
+ ss *= gh_scm2double (s);
+ return ss;
}
-Staff_symbol::Staff_symbol( SCM s)
- : Spanner (s)
-{
-}
+
+
+
+ADD_INTERFACE (Staff_symbol,"staff-symbol-interface",
+ "This spanner draws the lines of a staff. The center (i.e. middle line
+or space) is position 0.",
+
+ "ragged-right staff-space thickness line-count");
+