source file of the GNU LilyPond music typesetter
- (c) 1996--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
keyplacement by Mats Bengtsson
*/
-#include "group-interface.hh"
+#include "item.hh"
#include "key-item.hh"
#include "molecule.hh"
#include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "staff-symbol-referencer.hh"
+#include "lookup.hh"
+/*
+ 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 */
-Key_item::Key_item ()
-{
- set_elt_property ("breakable", SCM_BOOL_T);
- set_elt_property ("c0-position", gh_int2scm (0));
- set_elt_property ("old-accidentals", SCM_EOL);
- set_elt_property ("new-accidentals", SCM_EOL);
-}
+/*
+ FIXME: key-item should just get a list of (position, acc), and leave
+ the thinking to other parties.
-void
-Key_item::add (int p, int a)
-{
- SCM pair = gh_cons (gh_int2scm (p),gh_int2scm (a));
- Group_interface (this, "new-accidentals").add_thing (pair);
-}
+ - 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.
-void
-Key_item::add_old (int p, int a)
+*/
+int
+alteration_pos (SCM what, int alter, int c0p)
{
- SCM pair = gh_cons (gh_int2scm (p),gh_int2scm (a));
- Group_interface (this, "old-accidentals").add_thing (pair);
-}
+ if (gh_pair_p (what))
+ return gh_scm2int (gh_car (what)) * 7 + gh_scm2int (gh_cdr (what)) + c0p;
+ int p = gh_scm2int (what);
-int
-Key_item::calculate_position(SCM pair) const
-{
- int p = gh_scm2int (gh_car (pair));
- int a = gh_scm2int (gh_cdr (pair));
-
- if (to_boolean (get_elt_property ("multi-octave")))
- {
- return p + gh_scm2int (get_elt_property ("c0-position"));
- }
- else {
- // Find the c in the range -4 through 2
- int from_bottom_pos = gh_scm2int (get_elt_property ("c0-position")) + 4;
- from_bottom_pos = from_bottom_pos%7;
- from_bottom_pos = (from_bottom_pos + 7)%7; // Precaution to get positive.
- int c0 = from_bottom_pos - 4;
+ // Find the c in the range -4 through 2
+ int from_bottom_pos = c0p + 4;
+ from_bottom_pos = from_bottom_pos%7;
+ from_bottom_pos = (from_bottom_pos + 7)%7; // Precaution to get positive.
+ int c0 = from_bottom_pos - 4;
- if ((a<0 && ((p>FLAT_TOP_PITCH) || (p+c0>4)) && (p+c0>1))
- ||
- (a>0 && ((p>SHARP_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
+ 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)))
+ {
+ 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 && a>0 && p==3)
- p -= 7;
- if (c0==-3 && a>0 && p==-1)
- p += 7;
- if (c0==-4 && a<0 && p==-1)
- p += 7;
- if (c0==-2 && a<0 && p==-3)
- p += 7;
+ if (c0==2 && alter >0 && p==3)
+ p -= 7;
+ if (c0==-3 && alter>0 && p==-1)
+ p += 7;
+ if (c0==-4 && alter<0 && p==-1)
+ p += 7;
+ if (c0==-2 && alter<0 && p==-3)
+ p += 7;
- return p + c0;
- }
+ return p + c0;
}
/*
TODO
- space the `natural' signs wider
-
*/
-
-Molecule
-Key_item::do_brew_molecule() const
+MAKE_SCHEME_CALLBACK (Key_item,brew_molecule,1);
+SCM
+Key_item::brew_molecule (SCM smob)
{
- Molecule mol;
+ Grob*me =unsmob_grob (smob);
- Staff_symbol_referencer_interface si (this);
- Real inter = si.staff_space ()/2.0;
+ Real inter = Staff_symbol_referencer::staff_space (me)/2.0;
- SCM newas = get_elt_property ("new-accidentals");
+ 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));
+ }
+ else
+ {
+ style = "";
+ }
+ SCM newas = me->get_grob_property ("new-accidentals");
+ Molecule mol;
/*
SCM lists are stacks, so we work from right to left, ending with
the cancellation signature.
*/
+ int c0p = gh_scm2int (me->get_grob_property ("c0-position"));
+
for (SCM s = newas; gh_pair_p (s); s = gh_cdr (s))
{
- int a = gh_scm2int (gh_cdar (s));
- Molecule m = lookup_l ()->afm_find ("accidentals-" + to_str (a));
- m.translate_axis (calculate_position(gh_car (s)) * inter, Y_AXIS);
+ SCM what = gh_caar (s);
+ int alter = gh_scm2int (gh_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);
}
-
- if (break_status_dir () != RIGHT)
+
+ Item *it = dynamic_cast<Item*> (me) ;
+ if (it->break_status_dir () != RIGHT)
{
- SCM old = get_elt_property ("old-accidentals");
+ 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);
+ Interval x (0, inter);
+ Interval y (0,0);
- mol.add_at_edge (X_AXIS, LEFT, lookup_l()->blank (Box(x,y)),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 = gh_cdr (old))
{
- SCM found = SCM_EOL;
-
- /*
- find correspondences in pitches
- */
- for (SCM s = newas; gh_pair_p (s); s = gh_cdr (s))
- if (gh_caar(s) == gh_caar (old))
- found = gh_car (s);
-
- if (found == SCM_EOL || gh_cdr (found) != gh_cdar (old))
+ SCM found = scm_assoc (gh_caar (old), newas);
+ if (found == SCM_BOOL_F
+ || gh_cdr (found) != gh_cdar (old))
{
- Molecule m =lookup_l ()->afm_find ("accidentals-0");
+ SCM what = gh_caar (old);
+ int alter = 0;
+ int pos = alteration_pos (what, alter, c0p);
+
+ Molecule m = natural;
+ m.translate_axis (pos* inter, Y_AXIS);
- m.translate_axis (calculate_position(gh_car(old)) * inter, Y_AXIS);
- mol.add_at_edge (X_AXIS, LEFT, m,0);
+ mol.add_at_edge (X_AXIS, LEFT, m, 0);
}
}
-
-
}
-
- return mol;
+ return mol.smobbed_copy ();
}
+
+bool
+Key_item::has_interface (Grob*m)
+{
+ return m && m->has_interface (ly_symbol2scm ("key-signature-interface"));
+}
+
+void
+Key_item::set_interface (Grob*m)
+{
+ m->set_interface (ly_symbol2scm ("key-signature-interface"));
+}
projects / lilypond.git / blobdiff