source file of the GNU LilyPond music typesetter
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include <math.h>
+#include "note-head.hh"
+
+#include <cmath>
+#include <cctype>
+#include <algorithm> // min, max
+using namespace std;
+
+#include "directional-element-interface.hh"
+#include "staff-symbol.hh"
#include "misc.hh"
#include "dots.hh"
-#include "note-head.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "font-interface.hh"
-#include "molecule.hh"
-#include "musical-request.hh"
+#include "music.hh"
#include "rhythmic-head.hh"
-
-/*
- Note_head contains the code for printing note heads and the ledger lines.
-
- TODO: maybe it's worthwhile to split away the Ledger lines into a
- separate grob. */
-
#include "staff-symbol-referencer.hh"
+#include "lookup.hh"
+#include "output-def.hh"
/*
- build a ledger line for small pieces.
- */
-Molecule
-Note_head::ledger_line (Interval xwid, Grob *me)
+ clean up the mess left by ledger line handling.
+*/
+static Stencil
+internal_print (Grob *me, String *font_char)
{
- Drul_array<Molecule> endings;
- endings[LEFT] = Font_interface::get_default_font (me)->find_by_name ("noteheads-ledgerending");
- Molecule *e = &endings[LEFT];
- endings[RIGHT] = *e;
-
- Real thick = e->extent (Y_AXIS).length ();
- Real len = e->extent (X_AXIS).length () - thick;
+ SCM style = me->get_property ("style");
+ if (!scm_is_symbol (style))
+ style = ly_symbol2scm ("default");
- Molecule total;
- Direction d = LEFT;
- do {
- endings[d].translate_axis (xwid[d] - endings[d].extent (X_AXIS)[d], X_AXIS);
- total.add_molecule (endings[d]);
- } while ((flip (&d)) != LEFT);
-
- Real xpos = xwid [LEFT] + len;
-
- while (xpos + len + thick /2 <= xwid[RIGHT])
+ String suffix = to_string (min (robust_scm2int (me->get_property ("duration-log"), 2), 2));
+ if (style != ly_symbol2scm ("default"))
{
- e->translate_axis (len, X_AXIS);
- total.add_molecule (*e);
- xpos += len;
+ SCM gn = me->get_property ("glyph-name");
+ if (scm_is_string (gn))
+ suffix = ly_scm2string (gn);
}
- return total;
-}
-
-
-Molecule
-Note_head::ledger_lines (Grob*me,
- bool take_space,
- int count, Direction dir, Interval idw)
-{
- Real inter_f = Staff_symbol_referencer::staff_space (me)/2;
-
- /*
- idw ?
-
- (who's that ? :-)
-
-
- --hwn
- */
- Molecule ledger (ledger_line (idw, me));
+ Font_metric *fm = Font_interface::get_default_font (me);
- if (!take_space)
- ledger.set_empty (true);
-
- Real offs = (Staff_symbol_referencer::on_staffline (me))
- ? 0.0
- : -dir * inter_f;
+ String idx = "noteheads.s" + suffix;
- Molecule legs;
- for (int i=0; i < count; i++)
+ Stencil out = fm->find_by_name (idx);
+ if (out.is_empty ())
{
- Molecule s (ledger);
- s.translate_axis (-dir * inter_f * i*2 + offs,
- Y_AXIS);
- legs.add_molecule (s);
- }
+ String prefix = "noteheads.";
+ Grob *stem = unsmob_grob (me->get_object ("stem"));
+ Direction stem_dir = stem ? get_grob_direction (stem) : CENTER;
- return legs;
-}
+ if (stem_dir == CENTER)
+ programming_error ("must have stem dir for note head");
-Molecule
-internal_brew_molecule (Grob *me, bool ledger_take_space)
-{
- int sz = Staff_symbol_referencer::line_count (me)-1;
- int p = (int) rint (Staff_symbol_referencer::position_f (me));
- int streepjes_i = abs (p) < sz
- ? 0
- : (abs (p) - sz) /2;
-
- SCM style = me->get_grob_property ("style");
- if (!gh_symbol_p (style))
- {
- return Molecule();
+ idx = prefix + ((stem_dir == UP) ? "u" : "d") + suffix;
+ out = fm->find_by_name (idx);
}
- /*
- ugh: use gh_call () / scm_apply ().
-
- UGH: use grob-property.
- */
- SCM log = gh_int2scm (Rhythmic_head::balltype_i (me));
- SCM exp = scm_list_n (ly_symbol2scm ("find-notehead-symbol"), log,
- ly_quote_scm (style),
- SCM_UNDEFINED);
- String name = "noteheads-" + ly_scm2string (scm_primitive_eval (exp));
- Molecule out = Font_interface::get_default_font (me)->find_by_name (name);
-
- if (streepjes_i)
+ if (out.is_empty ())
{
- Direction dir = (Direction)sign (p);
- Interval hd = out.extent (X_AXIS);
- Real hw = hd.length ()/4;
- out.add_molecule (Note_head::ledger_lines (me, ledger_take_space, streepjes_i, dir,
- Interval (hd[LEFT] - hw,
- hd[RIGHT] + hw)));
+ me->warning (_f ("note head `%s' not found", idx.to_str0 ()));
+ out = Stencil (Box (Interval (0, 0), Interval (0, 0)), SCM_EOL);
}
+ else
+ *font_char = idx;
+
return out;
}
-MAKE_SCHEME_CALLBACK (Note_head,brew_molecule,1);
-
+/*
+ TODO: make stem X-parent of notehead.
+ */
+MAKE_SCHEME_CALLBACK (Note_head, stem_x_shift, 1);
SCM
-Note_head::brew_molecule (SCM smob)
+Note_head::stem_x_shift (SCM smob)
{
Grob *me = unsmob_grob (smob);
- return internal_brew_molecule (me, true).smobbed_copy ();
+ Grob *stem = unsmob_grob (me->get_object ("stem"));
+ if (stem)
+ (void) stem->get_property ("positioning-done");
+
+ return scm_from_int (0);
}
-/*
- Compute the width the head without ledgers.
- */
-Interval
-Note_head::head_extent (Grob *me, Axis a)
+MAKE_SCHEME_CALLBACK (Note_head, print, 1);
+SCM
+Note_head::print (SCM smob)
{
- return internal_brew_molecule (me, false).extent (a);
+ Grob *me = unsmob_grob (smob);
+
+ String idx;
+ return internal_print (me, &idx).smobbed_copy ();
}
-bool
-Note_head::has_interface (Grob*m)
+Real
+Note_head::stem_attachment_coordinate (Grob *me, Axis a)
{
- return m&& m->has_interface (ly_symbol2scm ("note-head-interface"));
+ Offset off = robust_scm2offset (me->get_property ("stem-attachment"),
+ Offset (0,0));
+
+ return off [a];
}
-
-MAKE_SCHEME_CALLBACK (Note_head,brew_ez_molecule,1);
-
-/*
- TODO: ledger lines are causing a mess again, now with accidentals and
- ez-note heads.
- */
+MAKE_SCHEME_CALLBACK(Note_head, calc_stem_attachment, 1);
SCM
-Note_head::brew_ez_molecule (SCM smob)
+Note_head::calc_stem_attachment (SCM smob)
{
- Grob *me = unsmob_grob (smob);
- int l = Rhythmic_head::balltype_i (me);
-
- int b = (l >= 2);
- SCM at = scm_list_n (ly_symbol2scm ("ez-ball"),
- me->get_grob_property ("note-character"),
- gh_int2scm (b),
- gh_int2scm (1-b),
- SCM_UNDEFINED);
- Box bx (Interval (0, 1.0), Interval (-0.5, 0.5));
- Molecule m (bx, at);
- int p = (int) rint (Staff_symbol_referencer::position_f (me));
-
- int sz = Staff_symbol_referencer::line_count (me)-1;
- int streepjes_i = abs (p) < sz
- ? 0
- : (abs (p) - sz) /2;
-
- if (streepjes_i)
- {
- Direction dir = (Direction)sign (p);
- Interval hd = m.extent (X_AXIS);
- Real hw = hd.length ()/4;
- m.add_molecule (ledger_lines (me, false, streepjes_i, dir,
- Interval (hd[LEFT] - hw,
- hd[RIGHT] + hw)));
- }
+ Grob *me = unsmob_grob (smob);
+ Font_metric *fm = Font_interface::get_default_font (me);
+ String key;
+ internal_print (me, &key);
+
+ Offset att;
- return m.smobbed_copy ();
+ int k = fm->name_to_index (key);
+ if (k >= 0)
+ {
+ Box b = fm->get_indexed_char (k);
+ Offset wxwy = fm->attachment_point (key);
+ for (int i = X_AXIS ; i < NO_AXES; i++)
+ {
+ Axis a = Axis (i);
+
+ Interval v = b[a];
+ if (!v.is_empty ())
+ {
+ att[a] = (2 * (wxwy[a] - v.center ()) / v.length ());
+ }
+ }
+ }
+
+ return ly_offset2scm (att);
}
-Real
-Note_head::stem_attachment_coordinate (Grob *me, Axis a)
+int
+Note_head::get_balltype (Grob *me)
{
- SCM v = me->get_grob_property ("stem-attachment-function");
-
- if (!gh_procedure_p (v))
- return 0.0;
+ SCM s = me->get_property ("duration-log");
+ return scm_is_number (s) ? min (scm_to_int (s), 2) : 0;
+}
- SCM st = me->get_grob_property ("style");
- SCM result = gh_apply (v, scm_list_n (st, SCM_UNDEFINED));
+ADD_INTERFACE (Note_head, "note-head-interface",
+ "Note head",
- if (!gh_pair_p (result))
- return 0.0;
+ /* properties */
+ "note-names "
+ "accidental-grob "
+ "glyph-name "
+ "stem-attachment "
+ "style "
+ );
- result = (a == X_AXIS) ? ly_car (result) : ly_cdr (result);
-
- return gh_number_p (result) ? gh_scm2double (result) : 0.0;
-}