source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <math.h>
#include "misc.hh"
#include "dots.hh"
#include "note-head.hh"
-#include "dimen.hh"
#include "debug.hh"
-#include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "molecule.hh"
#include "musical-request.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. */
-Note_head::Note_head ()
+#include "staff-symbol-referencer.hh"
+
+/*
+ build a ledger line for small pieces.
+ */
+Molecule
+Note_head::ledger_line (Interval xwid, Grob *me)
{
- x_dir_ = CENTER;
- staff_size_i_= 8; // UGH
- position_i_ = 0;
- extremal_i_ = 0;
+ 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;
}
-void
-Note_head::do_pre_processing ()
+
+Molecule
+Note_head::ledger_lines (Grob*me,
+ bool take_space,
+ int count, Direction dir, Interval idw)
{
- // 8 ball looks the same as 4 ball:
- if (balltype_i_ > 2)
- balltype_i_ = 2;
- if (dots_l_) // move into Rhythmic_head?
- dots_l_->position_i_ = position_i_;
+ 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;
}
-IMPLEMENT_IS_TYPE_B1(Note_head,Rhythmic_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();
+ }
+
+ /*
+ 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);
-int
-Note_head::compare (Note_head *const &a, Note_head * const &b)
+ 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)
{
- return a->position_i_ - b->position_i_;
+ Grob *me = unsmob_grob (smob);
+ return internal_brew_molecule (me, true).smobbed_copy ();
}
+/*
+ Compute the width the head without ledgers.
+ */
Interval
-Note_head::do_width () const
+Note_head::head_extent (Grob *me, Axis a)
+{
+ return internal_brew_molecule (me, false).extent (a);
+}
+
+bool
+Note_head::has_interface (Grob*m)
{
- Atom a = paper ()->lookup_l()->ball (balltype_i_);
- Interval i = a.dim_[X_AXIS];
- i+= x_dir_ * i.length ();
- return i;
+ return m&& m->has_interface (ly_symbol2scm ("note-head-interface"));
}
-Molecule*
-Note_head::brew_molecule_p() const
+
+MAKE_SCHEME_CALLBACK (Note_head,brew_ez_molecule,1);
+
+/*
+ TODO: ledger lines are causing a mess again, now with accidentals and
+ ez-note heads.
+ */
+SCM
+Note_head::brew_ez_molecule (SCM smob)
{
- Molecule*out = 0;
- Paper_def *p = paper();
- Real inter_f = p->internote_f ();
+ Grob *me = unsmob_grob (smob);
+ int l = Rhythmic_head::balltype_i (me);
- // ugh
- int streepjes_i = abs (position_i_) < staff_size_i_/2
+ 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(position_i_) - staff_size_i_/2) /2;
-
- Atom s = p->lookup_l()->ball (balltype_i_);
- out = new Molecule (Atom (s));
- out->translate_axis (x_dir_ * s.dim_[X_AXIS].length (), X_AXIS);
+ : (abs (p) - sz) /2;
- if (streepjes_i)
- {
- int dir = sign (position_i_);
- Atom streepje = p->lookup_l ()->streepje (balltype_i_);
-
- int parity = (position_i_ % 2) ? 1 : 0;
-
-
- for (int i=0; i < streepjes_i; i++)
- {
- Atom s = streepje;
- s.translate_axis (-dir * inter_f * (i*2 + parity),
- Y_AXIS);
- out->add (s);
- }
+ 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)));
}
- out->translate_axis (inter_f*position_i_, Y_AXIS);
- return out;
+ return m.smobbed_copy ();
+}
+
+
+Real
+Note_head::stem_attachment_coordinate (Grob *me, Axis a)
+{
+ SCM v = me->get_grob_property ("stem-attachment-function");
+
+ if (!gh_procedure_p (v))
+ return 0.0;
+
+ SCM st = me->get_grob_property ("style");
+ SCM result = gh_apply (v, scm_list_n (st, SCM_UNDEFINED));
+
+ if (!gh_pair_p (result))
+ return 0.0;
+
+ result = (a == X_AXIS) ? ly_car (result) : ly_cdr (result);
+
+ return gh_number_p (result) ? gh_scm2double (result) : 0.0;
}
projects / lilypond.git / blobdiff