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 "lookup.hh"
#include "debug.hh"
#include "item.hh"
#include "staff-symbol.hh"
+#include "staff-symbol-referencer.hh"
#include "spanner.hh"
-MAKE_SCHEME_CALLBACK(Staff_symbol,brew_molecule,1);
+MAKE_SCHEME_CALLBACK (Staff_symbol,brew_molecule,1);
SCM
Staff_symbol::brew_molecule (SCM smob)
{
- Score_element *me = unsmob_element (smob);
+ Grob *me = unsmob_grob (smob);
Spanner* sp = dynamic_cast<Spanner*> (me);
- Score_element * common
+ Grob * common
= sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
- Real width =
- // right_shift - left_shift
- + sp->get_bound (RIGHT)->relative_coordinate (common , X_AXIS)
- - sp->get_bound (LEFT)->relative_coordinate (common, 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;
- Real t = me->paper_l ()->get_var ("stafflinethickness");
+ 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);
+
int l = Staff_symbol::line_count (me);
Real height = (l-1) * staff_space (me) /2;
}
int
-Staff_symbol::steps_i(Score_element*me)
+Staff_symbol::steps_i (Grob*me)
{
return line_count (me) * 2;
}
int
-Staff_symbol::line_count (Score_element*me)
+Staff_symbol::line_count (Grob*me)
{
- SCM c = me->get_elt_property ("line-count");
+ SCM c = me->get_grob_property ("line-count");
if (gh_number_p (c))
return gh_scm2int (c);
else
}
Real
-Staff_symbol::staff_space (Score_element*me )
+Staff_symbol::staff_space (Grob*me)
{
Real ss = 1.0;
- SCM s = me->get_elt_property ("staff-space");
+ SCM s = me->get_grob_property ("staff-space");
if (gh_number_p (s))
ss *= gh_scm2double (s);
return ss;
}
-bool
-Staff_symbol::has_interface (Score_element*m)
-{
- return m && m->has_interface (ly_symbol2scm ("staff-symbol-interface"));
-}
+
+
+
+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");
+