/*
- 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--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 "stencil.hh"
+#include "warn.hh"
#include "item.hh"
+#include "staff-symbol.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);
+ 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);
+
+ Real width = 0.0;
+
+ /*
+ For raggedright without ragged staffs, simply set width to the linewidth.
+
+ (ok -- lousy UI, since width is in staff spaces)
+
+ --hwn.
+ */
+ SCM width_scm = me->get_grob_property ("width");
+ if (gh_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.
+ */
+ width = gh_scm2double (width_scm);
+ }
+ else
+ {
+ 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->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
+ t *= robust_scm2double ( me->get_grob_property("thickness"), 1.0);
- 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 ();
+ int l = Staff_symbol::line_count (me);
- Real height = (l-1) * staff_space () /2;
- Molecule m;
+ Real height = (l-1) * staff_space (me) /2;
+ Stencil m;
for (int i=0; i < l; i++)
{
- Molecule a =
- lookup_l ()->filledbox (Box (Interval (0,width),
- Interval (-t/2, t/2)));
+ Stencil a =
+ Lookup::horizontal_line (Interval (0,width), t);
- a.translate_axis (height - i * staff_space (), Y_AXIS);
- m.add_molecule (a);
+ a.translate_axis (height - i * staff_space (me), Y_AXIS);
+ m.add_stencil (a);
}
- return m;
+ 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)
+{
+ 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 (Grob*me)
{
- return gh_scm2int (get_elt_property ("line-count"));
+ return robust_scm2double ( me->get_grob_property ("staff-space"), 1.0);
}
Real
-Staff_symbol::staff_space ()const
+Staff_symbol::get_line_thickness (Grob* me)
{
- return gh_scm2double (get_elt_property ("staff-space"));
+ Real lt = me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
+
+ return robust_scm2double (me->get_grob_property ("thickness"), 1.0) * lt;
}
+
+Real
+Staff_symbol::get_ledger_line_thickness (Grob * me)
+{
+ SCM lt_pair = me->get_grob_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. 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");