-
/*
key-item.cc -- implement Key_signature_interface
source file of the GNU LilyPond music typesetter
- (c) 1996--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
keyplacement by Mats Bengtsson
*/
#include "lookup.hh"
#include "lily-guile.hh"
#include "lily-proto.hh"
-
+#include "accidental-interface.hh"
struct Key_signature_interface
{
const int FLAT_TOP_PITCH=2; /* fes,ges,as and bes typeset in lower octave */
const int SHARP_TOP_PITCH=4; /* ais and bis typeset in lower octave */
+/*
+ TODO: look this up. I'm not sure where the naturals ought to go.
+ */
+const int NATURAL_TOP_PITCH = 4;
+
+
+
/*
FIXME: key-item should just get a list of (position, acc), and leave
- lots of values trivially shared (key doesn't change very
often). Compute those once, and use that as cache for the rest.
+ TODO: can we do without c0pos? it's partly musical.
+
*/
int
alteration_pos (SCM what, int alter, int c0p)
int c0 = from_bottom_pos - 4;
- if ((alter <0 && ((p>FLAT_TOP_PITCH) || (p+c0>4)) && (p+c0>1))
- ||
- (alter >0 && ((p>SHARP_TOP_PITCH) || (p+c0>5)) && (p+c0>2)))
+ if ((alter <0 && ((p>FLAT_TOP_PITCH) || (p+c0>4)) && (p+c0>1))
+ || (alter >0 && ((p > SHARP_TOP_PITCH) || (p+c0>5)) && (p+c0>2))
+ || (alter == 0 && ((p > NATURAL_TOP_PITCH) || (p + c0>5)) && (p + c0>2)))
{
p -= 7; /* Typeset below c_position */
}
Grob*me =unsmob_grob (smob);
Real inter = Staff_symbol_referencer::staff_space (me)/2.0;
-
+
SCM scm_style = me->get_grob_property ("style");
String style;
if (gh_symbol_p (scm_style))
{
- style = ly_scm2string (scm_symbol_to_string (scm_style));
+ style = ly_symbol2string (scm_style);
}
else
{
Molecule mol;
SCM c0s = me->get_grob_property ("c0-position");
- int c0p=0;
+ int c0p = 0;
if (gh_number_p (c0s))
- c0p = gh_scm2int (c0s);
+ c0p = gh_scm2int (c0s);
/*
SCM lists are stacks, so we work from right to left, ending with
the cancellation signature.
*/
+ Font_metric *fm = Font_interface::get_default_font (me);
for (SCM s = newas; gh_pair_p (s); s = ly_cdr (s))
{
- SCM what = ly_caar (s);
- int alter = gh_scm2int (ly_cdar (s));
- int pos = alteration_pos (what, alter, c0p);
-
- Molecule m = Font_interface::get_default_font (me)->
- find_by_name (String ("accidentals-") + style + to_str (alter));
- m.translate_axis (pos * inter, Y_AXIS);
- mol.add_at_edge (X_AXIS, LEFT, m, 0);
+ int alteration = gh_scm2int (ly_cdar (s));
+ String font_char =
+ Accidental_interface::get_fontcharname (style, alteration);
+ Molecule acc (fm->find_by_name ("accidentals-" + font_char));
+
+ if (acc.is_empty ())
+ {
+ me->warning (_f ("accidental `%s' not found", font_char));
+ }
+ else
+ {
+ SCM what = ly_caar (s);
+ int pos = alteration_pos (what, alteration, c0p);
+ acc.translate_axis (pos * inter, Y_AXIS);
+ mol.add_at_edge (X_AXIS, LEFT, acc, 0, 0);
+ }
}
Item *it = dynamic_cast<Item*> (me) ;
Interval x (0, inter);
Interval y (0,0);
- mol.add_at_edge (X_AXIS, LEFT, Lookup::blank (Box (x,y)),0);
+ mol.add_at_edge (X_AXIS, LEFT, Lookup::blank (Box (x,y)), 0, 0);
Molecule natural;
if (gh_pair_p (old))
|| ly_cdr (found) != ly_cdar (old))
{
SCM what = ly_caar (old);
- int alter = 0;
- int pos = alteration_pos (what, alter, c0p);
+ int alteration = 0;
+ int pos = alteration_pos (what, alteration, c0p);
Molecule m = natural;
m.translate_axis (pos* inter, Y_AXIS);
- mol.add_at_edge (X_AXIS, LEFT, m, 0);
+ /*
+ The natural sign (unlike flat & sharp)
+ has vertical edges on both sides. A little padding is
+ needed to prevent collisions.
+ */
+ Real padding = 0.1 ;
+ mol.add_at_edge (X_AXIS, LEFT, m, padding, 0);
}
}
}
}
ADD_INTERFACE (Key_signature_interface, "key-signature-interface",
- "A group of accidentals.",
+ "A group of accidentals, to be printed as signature sign.",
"c0-position old-accidentals new-accidentals");