-
/*
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--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
keyplacement by Mats Bengtsson
*/
#include "item.hh"
-
-#include "molecule.hh"
-#include "paper-def.hh"
+#include "output-def.hh"
#include "font-interface.hh"
#include "staff-symbol-referencer.hh"
#include "lookup.hh"
-#include "lily-guile.hh"
-#include "lily-proto.hh"
-
+#include "accidental-interface.hh"
struct Key_signature_interface
{
+ DECLARE_SCHEME_CALLBACK (print, (SCM));
- static void set_interface (Grob*);
- static bool has_interface (Grob*);
- DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM ));
+ static bool has_interface (Grob *);
};
-
/*
FIXME: too much hardcoding here.
- */
-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 */
+*/
+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
the thinking to other parties.
- TODO: put this in Scheme
-
- - 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)
+alteration_pos (SCM what, int alter, int c0p)
{
- if (gh_pair_p (what))
- return gh_scm2int (ly_car (what)) * 7 + gh_scm2int (ly_cdr (what)) + c0p;
+ if (scm_is_pair (what))
+ return scm_to_int (scm_car (what)) * 7 + scm_to_int (scm_cdr (what)) + c0p;
- int p = gh_scm2int (what);
+ int p = scm_to_int (what);
// Find the c in the range -4 through 2
int from_bottom_pos = c0p + 4;
from_bottom_pos = (from_bottom_pos + 7)%7; // Precaution to get positive.
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 */
}
- /* Provide for the four cases in which there's a glitch
- it's a hack, but probably not worth
- the effort of finding a nicer solution.
- --dl. */
- if (c0==2 && alter >0 && p==3)
+
+ /* Provide for the four cases in which there's a glitch
+ it's a hack, but probably not worth
+ the effort of finding a nicer solution.
+ --dl. */
+ if (c0 == 2 && alter > 0 && p == 3)
p -= 7;
- if (c0==-3 && alter>0 && p==-1)
+ if (c0==-3 && alter > 0 && p ==-1)
p += 7;
- if (c0==-4 && alter<0 && p==-1)
+ if (c0==-4 && alter < 0 && p ==-1)
p += 7;
- if (c0==-2 && alter<0 && p==-3)
+ if (c0==-2 && alter < 0 && p ==-3)
p += 7;
-
+
return p + c0;
}
/*
TODO
- space the `natural' signs wider
- */
-MAKE_SCHEME_CALLBACK (Key_signature_interface,brew_molecule,1);
+*/
+MAKE_SCHEME_CALLBACK (Key_signature_interface, print, 1);
SCM
-Key_signature_interface::brew_molecule (SCM smob)
+Key_signature_interface::print (SCM smob)
{
- Grob*me =unsmob_grob (smob);
+ Grob *me = unsmob_grob (smob);
- Real inter = Staff_symbol_referencer::staff_space (me)/2.0;
-
- SCM scm_style = me->get_grob_property ("style");
+ Real inter = Staff_symbol_referencer::staff_space (me) / 2.0;
+
+ SCM scm_style = me->get_property ("style");
String style;
- if (gh_symbol_p (scm_style))
+ if (scm_is_symbol (scm_style))
{
- style = ly_scm2string (scm_symbol_to_string (scm_style));
+ style = ly_symbol2string (scm_style);
}
else
{
style = "";
}
- SCM newas = me->get_grob_property ("new-accidentals");
- Molecule mol;
+ SCM newas = me->get_property ("new-accidentals");
+ Stencil mol;
- SCM c0s = me->get_grob_property ("c0-position");
- int c0p=0;
- if (gh_number_p (c0s))
- c0p = gh_scm2int (c0s);
+ SCM c0s = me->get_property ("c0-position");
+ int c0p = 0;
+ if (scm_is_number (c0s))
+ c0p = scm_to_int (c0s);
/*
SCM lists are stacks, so we work from right to left, ending with
the cancellation signature.
*/
- for (SCM s = newas; gh_pair_p (s); s = ly_cdr (s))
+ Font_metric *fm = Font_interface::get_default_font (me);
+ for (SCM s = newas; scm_is_pair (s); s = scm_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 = scm_to_int (scm_cdar (s));
+ String font_char
+ = Accidental_interface::get_fontcharname (style, alteration);
+ Stencil acc (fm->find_by_name ("accidentals." + font_char));
+
+ if (acc.is_empty ())
+ {
+ me->warning (_f ("accidental `%s' not found", font_char));
+ }
+ else
+ {
+ SCM what = scm_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) ;
+ Item *it = dynamic_cast<Item *> (me);
if (it->break_status_dir () != RIGHT)
{
- SCM old = me->get_grob_property ("old-accidentals");
-
- /*
- Add half a space between cancellation and key sig.
-
- As suggested by [Ross], p.148.
- */
- Interval x (0, inter);
- Interval y (0,0);
-
- mol.add_at_edge (X_AXIS, LEFT, Lookup::blank (Box (x,y)),0);
-
- Molecule natural;
- if (gh_pair_p (old))
- natural=Font_interface::get_default_font (me)->
- find_by_name (String ("accidentals-") + style + String ("0"));
-
- for (; gh_pair_p (old); old = ly_cdr (old))
- {
- SCM found = scm_assoc (ly_caar (old), newas);
- if (found == SCM_BOOL_F
- || ly_cdr (found) != ly_cdar (old))
- {
- SCM what = ly_caar (old);
- int alter = 0;
- int pos = alteration_pos (what, alter, c0p);
+ SCM old = me->get_property ("old-accidentals");
- Molecule m = natural;
- m.translate_axis (pos* inter, Y_AXIS);
+ Stencil natural;
+ if (scm_is_pair (old))
+ natural = Font_interface::get_default_font (me)->
+ find_by_name (String ("accidentals.") + style + String ("0"));
- mol.add_at_edge (X_AXIS, LEFT, m, 0);
- }
- }
+ int last_pos = -100;
+ for (; scm_is_pair (old); old = scm_cdr (old))
+ {
+ SCM found = scm_assoc (scm_caar (old), newas);
+ if (found == SCM_BOOL_F
+ || scm_cdr (found) != scm_cdar (old))
+ {
+ SCM what = scm_caar (old);
+ int alteration = 0;
+ int pos = alteration_pos (what, alteration, c0p);
+
+ Stencil m = natural;
+ m.translate_axis (pos * inter, Y_AXIS);
+
+ /*
+ The natural sign (unlike flat & sharp)
+ has vertical edges on both sides. A little padding is
+ needed to prevent collisions.
+ */
+ Real padding = 0.0;
+ if (last_pos < pos + 2
+ && last_pos > pos - 6)
+ padding = 0.3;
+
+ mol.add_at_edge (X_AXIS, LEFT, m, padding, 0);
+ last_pos = pos;
+ }
+ }
}
mol.align_to (X_AXIS, LEFT);
-
- return mol.smobbed_copy ();
-}
-bool
-Key_signature_interface::has_interface (Grob*m)
-{
- return m && m->has_interface (ly_symbol2scm ("key-signature-interface"));
+ return mol.smobbed_copy ();
}
+ADD_INTERFACE (Key_signature_interface, "key-signature-interface",
+ "A group of accidentals, to be printed as signature sign.",
+ "style c0-position old-accidentals new-accidentals");
projects / lilypond.git / blobdiff