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"
+#include "warn.hh"
+#include "staff-symbol-referencer.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_sym, 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
-{
- if (time_sig_type_str_.length_i ())
+ Molecule m;
+ if (gh_symbol_p (st))
{
- if (time_sig_type_str_[0]=='1')
+ 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 ()));
+ m = numbered_time_signature (me, n, 0);
}
else
{
- return new Molecule( lookup_l ()-> special_time_signature (time_sig_type_str_ ,args_[0], args_[1], paper_l ()));
+ m = special_time_signature (me, st, n, d);
+ }
+ }
+ else
+ m = numbered_time_signature (me, n,d);
+
+ if (Staff_symbol_referencer::line_count (me) % 2 == 0)
+ m.translate_axis (Staff_symbol_referencer::staff_space (me)/2 , Y_AXIS);
+
+ return m.smobbed_copy ();
+}
+
+Molecule
+Time_signature::special_time_signature (Grob *me, SCM scm_style, int n, int d)
+{
+ String style = ly_scm2string (scm_symbol_to_string (scm_style));
+
+ if (style == "numbered")
+ return numbered_time_signature (me, n, d);
+
+ if ((style == "default") || (style == ""))
+ style = to_string ("C");
+
+ if (style == "C")
+ {
+ if /* neither C2/2 nor C4/4 */
+ (((n != 2) || (d != 2)) &&
+ ((n != 4) || (d != 4)))
+ {
+ return numbered_time_signature (me, n, d);
}
}
+
+ String char_name = style + to_string (n) + "/" + to_string (d);
+ me->set_grob_property ("font-family", ly_symbol2scm ("music"));
+ Molecule out =
+ Font_interface::get_default_font (me)->find_by_name ("timesig-" + char_name);
+ if (!out.empty_b ())
+ return out;
+
+ /*
+ If there is no such symbol, we default to the numbered style.
+ (Here really with a warning!)
+ */
+ me->warning (_f ("time signature symbol `%s' not found; "
+ "reverting to numbered style", char_name));
+ return numbered_time_signature (me, n, d);
+}
+
+Molecule
+Time_signature::numbered_time_signature (Grob*me,int num, int den)
+{
+ SCM chain = Font_interface::font_alist_chain (me);
+ me->set_grob_property("font-family", ly_symbol2scm ("number"));
+
+ Molecule n = Text_item::text2molecule (me,
+ scm_makfrom0str (to_string (num).to_str0 ()),
+ chain);
+ Molecule d = Text_item::text2molecule (me,
+ scm_makfrom0str (to_string (den).to_str0 ()),
+ 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
- return new Molecule(lookup_l ()->time_signature (args_[0], args_[1],paper_l ()));
+ {
+ m = n;
+ m.align_to (Y_AXIS, CENTER);
+ }
+
+ m.align_to (X_AXIS, LEFT);
+
+ return m;
}
+ADD_INTERFACE (Time_signature,"time-signature-interface",
+ "A time signature, in different styles.
+ The following values for 'style are are recognized:
+
+ @table @samp
+ @item @code{C}
+ 4/4 and 2/2 are typeset as C and struck C, respectively. All
+ other time signatures are written with two digits.
+
+ @item @code{neo_mensural}
+ 2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8 and 9/8 are
+ typeset with neo-mensural style mensuration marks. All other time
+ signatures are written with two digits.
+ @item @code{mensural}
+ 2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8 and 9/8 are
+ typeset with mensural style mensuration marks. All other time
+ signatures are written with two digits.
+ @item @code{1xxx}
+ All time signatures are typeset with a single
+ digit, e.g. 3/2 is written as 3. (Any symbol starting
+ with the digit @code{1} will do.)
+ @end table
+See also the test-file @file{input/test/time.ly}.
+",
+ "fraction style");