source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <math.h>
+#include <ctype.h>
#include "misc.hh"
#include "dots.hh"
#include "note-head.hh"
#include "debug.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "molecule.hh"
#include "musical-request.hh"
-#include "dimension-cache.hh"
+#include "rhythmic-head.hh"
-void
-Note_head::flip_around_stem (Direction d)
-{
- Real l= make_molecule ().dim_[X_AXIS].length ();
- translate_axis (l * d, X_AXIS);
-}
+/*
+ Note_head contains the code for printing note heads.
-Interval
-Note_head::dim_callback (Dimension_cache const * c)
+ Ledger lines:
+
+ It also contains the ledger lines, for historical reasons. Ledger
+ lines are somewhat of a PITA. In some cases, they take up no space, in
+ some cases they don't:
+
+ DO take space:
+
+ - when ledgered notes are juxtaposed: there should be some white
+ space between the ledger lines.
+
+ - when accidentals are near: the accidentals should not be on the
+ ledger lines
+
+ [both tips by Heinz Stolba from Universal Edition].
+
+ DO NOT take space into account:
+
+ - for basically everything else, e.g. swapping ledgered notes on
+ clustered chords, spacing between ledgered and unledgered notes.
+
+ TODO: fix this. It is not feasible to have a special grob for
+ ledgers, since you basically don't know if there will be ledgers,
+ unless you know at interpretation phase already 1. the Y-position,
+ 2. the number of staff lines. It's not yet specced when both pieces
+ of information are there, so for now, it is probably better to build
+ special support for ledgers into the accidental and separation-item
+ code.
+
+ (Besides a separate ledger seems overkill. For what else would
+ it be useful?)
+
+*/
+
+#include "staff-symbol-referencer.hh"
+
+/*
+ build a ledger line for small pieces.
+ */
+Molecule
+Note_head::ledger_line (Interval xwid, Grob *me)
{
- Note_head* n = dynamic_cast<Note_head*> (c->element_l ());
- return n->make_molecule ().dim_[X_AXIS];
+ 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;
+
+ 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])
+ {
+ e->translate_axis (len, X_AXIS);
+ total.add_molecule (*e);
+ xpos += len;
+ }
+
+ return total;
}
-Note_head::Note_head ()
+
+Molecule
+Note_head::ledger_lines (Grob*me,
+ bool take_space,
+ int count, Direction dir, Interval idw)
{
- dim_cache_[X_AXIS]->callback_l_ = dim_callback;
+ Real inter_f = Staff_symbol_referencer::staff_space (me)/2;
+
+ /*
+ idw ?
+
+ (who's that ? :-)
+
+
+ --hwn
+ */
+ Molecule ledger (ledger_line (idw, me));
+
+ if (!take_space)
+ ledger.set_empty (true);
+
+ Real offs = (Staff_symbol_referencer::on_staffline (me))
+ ? 0.0
+ : -dir * inter_f;
+
+ Molecule legs;
+ for (int i=0; i < count; i++)
+ {
+ Molecule s (ledger);
+ s.translate_axis (-dir * inter_f * i*2 + offs,
+ Y_AXIS);
+ legs.add_molecule (s);
+ }
+
+ return legs;
}
-void
-Note_head::do_pre_processing ()
+Molecule
+internal_brew_molecule (Grob *me, bool ledger_take_space)
{
- Rhythmic_head::do_pre_processing ();
+ 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;
- // 8 ball looks the same as 4 ball:
- String type;
- SCM style = get_elt_property ("style");
- if (style != SCM_UNDEFINED)
+ SCM style = me->get_grob_property ("style");
+ if (!gh_symbol_p (style))
{
- type = ly_scm2string (style);
+ return Molecule();
}
-
-
- if (balltype_i_ > 2 || type == "harmonic" || type == "cross")
- balltype_i_ = 2;
- if (dots_l ()) // move into Rhythmic_head?
- dots_l ()->set_position(int (position_f ()));
+ /*
+ 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)
+ {
+ 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)));
+ }
+ return out;
}
+MAKE_SCHEME_CALLBACK (Note_head,brew_molecule,1);
+SCM
+Note_head::brew_molecule (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
-int
-Note_head::compare (Note_head *const &a, Note_head * const &b)
+ /*
+ ledgers don't take space. See top of file.
+ */
+ return internal_brew_molecule (me, false).smobbed_copy ();
+}
+
+/*
+ Compute the width the head without ledgers.
+ */
+Interval
+Note_head::head_extent (Grob *me, Axis a)
{
- return sign(a->position_f () - b->position_f ());
+ return internal_brew_molecule (me, false).extent (a);
}
+bool
+Note_head::has_interface (Grob*m)
+{
+ return m&& m->has_interface (ly_symbol2scm ("note-head-interface"));
+}
-Molecule
-Note_head::make_molecule () const
+MAKE_SCHEME_CALLBACK (Note_head,brew_ez_molecule,1);
+
+SCM
+Note_head::brew_ez_molecule (SCM smob)
{
- String type;
- SCM style = get_elt_property ("style");
- if (style != SCM_UNDEFINED)
- {
- type = ly_scm2string (style);
+ Grob *me = unsmob_grob (smob);
+ int l = Rhythmic_head::balltype_i (me);
+
+ int b = (l >= 2);
+
+ SCM cause = me->get_grob_property ("cause");
+ SCM spitch = unsmob_music (cause)->get_mus_property ("pitch");
+ Pitch* pit = unsmob_pitch (spitch);
+
+ char s[2] = "a";
+ s[0] = (pit->notename_i_ + 2)%7 + 'a';
+ s[0] = toupper (s[0]);
+
+ SCM charstr = ly_str02scm (s);
+
+ SCM at = scm_list_n (ly_symbol2scm ("ez-ball"),
+ charstr,
+ 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)));
}
- return lookup_l()->afm_find (String ("noteheads-")
- + to_str (balltype_i_) + type);
+ return m.smobbed_copy ();
}
-Molecule*
-Note_head::do_brew_molecule_p() const
-{
- Real inter_f = staff_line_leading_f ()/2;
- int sz = lines_i ()-1;
- int streepjes_i = abs (position_f ()) < sz
- ? 0
- : (abs((int)position_f ()) - sz) /2;
+Real
+Note_head::stem_attachment_coordinate (Grob *me, Axis a)
+{
+ SCM v = me->get_grob_property ("stem-attachment-function");
- Molecule* out = new Molecule (make_molecule ());
+ if (!gh_procedure_p (v))
+ return 0.0;
- Box b = out->dim_;
+ SCM st = me->get_grob_property ("style");
+ SCM result = gh_apply (v, scm_list_n (st, SCM_UNDEFINED));
- if (streepjes_i)
- {
- Direction dir = (Direction)sign (position_f ());
- Interval hd = out->dim_[X_AXIS];
- Real hw = hd.length ()/4;
-
- Molecule ledger
- = lookup_l ()->ledger_line (Interval (hd[LEFT] - hw,
- hd[RIGHT] + hw));
-
- int parity = abs(int (position_f ())) % 2;
-
- for (int i=0; i < streepjes_i; i++)
- {
- Molecule s (ledger);
- s.translate_axis (-dir * inter_f * (i*2 + parity),
- Y_AXIS);
- out->add_molecule (s);
- }
- }
+ if (!gh_pair_p (result))
+ return 0.0;
- out->dim_ = b;
- return out;
+ result = (a == X_AXIS) ? ly_car (result) : ly_cdr (result);
+
+ return gh_number_p (result) ? gh_scm2double (result) : 0.0;
}
-
projects / lilypond.git / blobdiff