source file of the GNU LilyPond music typesetter
- (c) 1996--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "molecule.hh"
+#include "text-item.hh"
#include "time-signature.hh"
#include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
-Time_signature::Time_signature ()
+MAKE_SCHEME_CALLBACK (Time_signature,brew_molecule,1);
+/*
+ TODO: make different functions for special and normal timesigs.
+ */
+SCM
+Time_signature::brew_molecule (SCM smob)
{
- set_elt_property ("breakable", SCM_BOOL_T);
-}
+ Grob * me = unsmob_grob (smob);
+ SCM st = me->get_grob_property ("style");
+ SCM frac = me->get_grob_property ("fraction");
+ int n = 4;
+ int d = 4;
+ if (gh_pair_p (frac))
+ {
+ n = gh_scm2int (ly_car (frac));
+ d = gh_scm2int (ly_cdr (frac));
+ }
-Molecule*
-Time_signature::do_brew_molecule_p () const
-{
- SCM st = get_elt_property ("style");
- if (gh_string_p (st))
+ if (gh_symbol_p (st))
{
- String style (ly_scm2string (st));
+ String style (ly_scm2string (scm_symbol_to_string (st)));
if (style[0]=='1')
{
- Array<int> tmparr = args_;
- return new Molecule( lookup_l ()->time_signature (args_[0], 0, paper_l ()));
+ return time_signature (me, n, 0).smobbed_copy ();
}
else
{
- return new Molecule( lookup_l ()-> special_time_signature (style, args_[0], args_[1], paper_l ()));
+ return special_time_signature (me, style, n, d).smobbed_copy ();
}
}
else
- return new Molecule(lookup_l ()->time_signature (args_[0], args_[1],paper_l ()));
+ return time_signature (me, n,d).smobbed_copy ();
}
+Molecule
+Time_signature::special_time_signature (Grob*me, String s, int n, int d)
+{
+ /*
+ Randomly probing the font sucks?
+ */
+
+ SCM alist_chain = Font_interface::font_alist_chain (me);
+
+ SCM style_chain =
+ Font_interface::add_style (me, ly_symbol2scm ("timesig-symbol"),
+ alist_chain);
+ Font_metric *feta = Font_interface::get_font (me, style_chain);
+ /*
+ First guess: s contains only the signature style, append fraction.
+ */
+ String symbolname = "timesig-" + s + to_str (n) + "/" + to_str (d);
+
+ Molecule m = feta->find_by_name (symbolname);
+ if (!m.empty_b ())
+ return m;
+ /*
+ Second guess: s contains the full signature name
+ */
+ m = feta->find_by_name ("timesig-" + s);
+ if (!m.empty_b ())
+ return m;
+
+ // Resort to default layout with numbers
+ return time_signature (me, n, d);
+}
+
+
+Molecule
+Time_signature::time_signature (Grob*me,int num, int den)
+{
+ SCM chain = Font_interface::font_alist_chain (me);
+
+ Molecule n = Text_item::text2molecule (me,
+ ly_str02scm (to_str (num).ch_C ()),
+ chain);
+ Molecule d = Text_item::text2molecule (me,
+ ly_str02scm (to_str (den).ch_C ()),
+ chain);
+ n.align_to (X_AXIS, CENTER);
+ d.align_to (X_AXIS, CENTER);
+ Molecule m;
+ if (den)
+ {
+ m.add_at_edge (Y_AXIS, UP, n, 0.0);
+ m.add_at_edge (Y_AXIS, DOWN, d, 0.0);
+ }
+ else
+ {
+ m = n;
+ m.align_to (Y_AXIS, CENTER);
+ }
+ return m;
+}