-
/*
- key-item.cc -- implement Key_signature_interface
-
- source file of the GNU LilyPond music typesetter
+ This file is part of LilyPond, the GNU music typesetter.
- (c) 1996--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Copyright (C) 1996--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
keyplacement by Mats Bengtsson
-*/
-#include "item.hh"
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-#include "molecule.hh"
-#include "paper-def.hh"
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "accidental-interface.hh"
#include "font-interface.hh"
-#include "staff-symbol-referencer.hh"
+#include "international.hh"
+#include "item.hh"
#include "lookup.hh"
-#include "lily-guile.hh"
-#include "lily-proto.hh"
-
+#include "output-def.hh"
+#include "staff-symbol-referencer.hh"
+#include "rational.hh"
struct Key_signature_interface
{
- DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM ));
+ DECLARE_SCHEME_CALLBACK (print, (SCM));
+ DECLARE_GROB_INTERFACE ();
};
-
-/*
- 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 */
-
-
-/*
- 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.
-
-*/
-int
-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;
-
- int p = gh_scm2int (what);
-
- // 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 ((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 && 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;
-}
-
/*
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);
+ Item *me = dynamic_cast<Item *> (Grob::unsmob (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));
- }
- else
- {
- style = "";
- }
+ Real inter = Staff_symbol_referencer::staff_space (me) / 2.0;
+
+ Stencil mol;
- SCM newas = me->get_grob_property ("new-accidentals");
- Molecule mol;
+ SCM c0s = me->get_property ("c0-position");
- SCM c0s = me->get_grob_property ("c0-position");
- int c0p=0;
- if (gh_number_p (c0s))
- c0p = gh_scm2int (c0s);
+ bool is_cancellation = me->internal_has_interface
+ (ly_symbol2scm ("key-cancellation-interface"));
/*
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))
- {
- 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);
- }
+ Slice pos, overlapping_pos;
+ SCM last_glyph_name = SCM_BOOL_F;
+ SCM padding_pairs = me->get_property ("padding-pairs");
+
+ Font_metric *fm = Font_interface::get_default_font (me);
+ SCM alist = me->get_property ("glyph-name-alist");
- Item *it = dynamic_cast<Item*> (me) ;
- if (it->break_status_dir () != RIGHT)
+ for (SCM s = me->get_property ("alteration-alist"); scm_is_pair (s); s = scm_cdr (s))
{
- 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 alt = is_cancellation
+ ? scm_from_int (0)
+ : scm_cdar (s);
+
+ SCM glyph_name_scm = ly_assoc_get (alt, alist, SCM_BOOL_F);
+ if (!scm_is_string (glyph_name_scm))
+ {
+ me->warning (_f ("No glyph found for alteration: %s",
+ ly_scm2rational (alt).to_string ().c_str ()));
+ continue;
+ }
+
+ string glyph_name = ly_scm2string (glyph_name_scm);
+
+ Stencil acc (fm->find_by_name (glyph_name));
+
+ if (acc.is_empty ())
+ me->warning (_ ("alteration not found"));
+ else
{
- 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);
-
- Molecule m = natural;
- m.translate_axis (pos* inter, Y_AXIS);
-
- mol.add_at_edge (X_AXIS, LEFT, m, 0);
+ SCM proc = ly_lily_module_constant ("key-signature-interface::alteration-positions");
+
+ pos.set_empty ();
+ Stencil column;
+ for (SCM pos_list = scm_call_3 (proc, scm_car (s), c0s, smob);
+ scm_is_pair (pos_list); pos_list = scm_cdr (pos_list))
+ {
+ int p = scm_to_int (scm_car (pos_list));
+ pos.add_point (p);
+ column.add_stencil (acc.translated (Offset (0, p * inter)));
}
+ /*
+ The natural sign (unlike flat & sharp)
+ has vertical edges on both sides. A little padding is
+ needed to prevent collisions.
+ */
+ Real padding = robust_scm2double (me->get_property ("padding"),
+ 0.0);
+ SCM handle = scm_assoc (scm_cons (glyph_name_scm, last_glyph_name),
+ padding_pairs);
+ if (scm_is_pair (handle))
+ padding = robust_scm2double (scm_cdr (handle), 0.0);
+ else if (glyph_name == "accidentals.natural"
+ && !intersection (overlapping_pos, pos).is_empty ())
+ padding += 0.3;
+
+ mol.add_at_edge (X_AXIS, LEFT, column, padding);
+
+ pos.widen (4);
+ overlapping_pos = pos + 2;
+ last_glyph_name = glyph_name_scm;
}
}
mol.align_to (X_AXIS, LEFT);
-
+
return mol.smobbed_copy ();
}
-ADD_INTERFACE (Key_signature_interface, "key-signature-interface",
- "A group of accidentals.",
- "c0-position old-accidentals new-accidentals");
+ADD_INTERFACE (Key_signature_interface,
+ "A group of accidentals, to be printed as signature sign.",
+
+ /* properties */
+ "alteration-alist "
+ "c0-position "
+ "glyph-name-alist "
+ "flat-positions "
+ "sharp-positions "
+ "padding "
+ "padding-pairs "
+ );
projects / lilypond.git / blobdiff