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 "warn.hh"
+#include "font-interface.hh"
#include "molecule.hh"
#include "musical-request.hh"
-#include "dimension-cache.hh"
+#include "rhythmic-head.hh"
#include "staff-symbol-referencer.hh"
+#include "lookup.hh"
+#include "paper-def.hh"
+
+/*
+ Note_head contains the code for printing note heads.
+
+ 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.
-void
-Note_head::do_pre_processing ()
+ (Besides a separate ledger seems overkill. For what else would
+ it be useful?)
+
+*/
+
+Molecule
+Note_head::brew_ledger_lines (Grob *me,
+ int pos,
+ int interspaces,
+ Interval x_extent,
+ bool take_space)
{
- // 8 ball looks the same as 4 ball:
- String type;
- SCM style = get_elt_property ("style");
- if (gh_string_p (style))
+ Real inter_f = Staff_symbol_referencer::staff_space (me)/2;
+ int lines_i = abs (pos) < interspaces
+ ? 0
+ : (abs (pos) - interspaces) / 2;
+ Molecule molecule = Molecule();
+
+ if (lines_i)
{
- type = ly_scm2string (style);
- }
-
-
- if (balltype_i () > 2 || type == "harmonic" || type == "cross")
- set_elt_property ("duration-log", gh_int2scm (2));
+ Real ledgerlinethickness =
+ (me->get_paper ()->get_var ("ledgerlinethickness"));
+ Real blotdiameter = ledgerlinethickness;
+ // (me->get_paper ()->get_var ("blotdiameter"));
+ Interval y_extent =
+ Interval (-0.5*(ledgerlinethickness),
+ +0.5*(ledgerlinethickness));
+ Box ledger_line (x_extent, y_extent);
- if (Dots *d = dots_l ())
- { // move into Rhythmic_head?
- Staff_symbol_referencer_interface si (d);
- Staff_symbol_referencer_interface me (this);
+ Molecule proto_ledger_line =
+ Lookup::roundfilledbox (ledger_line, blotdiameter);
- si.set_position(int (me.position_f ()));
+ if (!take_space)
+ proto_ledger_line.set_empty (true);
+
+ Direction dir = (Direction)sign (pos);
+ Real offs = (Staff_symbol_referencer::on_staffline (me, pos))
+ ? 0.0
+ : -dir * inter_f;
+ for (int i = 0; i < lines_i; i++)
+ {
+ Molecule ledger_line (proto_ledger_line);
+ ledger_line.translate_axis (-dir * inter_f * i * 2 + offs, Y_AXIS);
+ molecule.add_molecule (ledger_line);
+ }
}
+
+ return molecule;
}
+Molecule
+internal_brew_molecule (Grob *me, bool ledger_take_space)
+{
+ 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 (Note_head::get_balltype (me));
+ SCM exp = scm_list_n (ly_symbol2scm ("find-notehead-symbol"), log,
+ ly_quote_scm (style),
+ SCM_UNDEFINED);
+ SCM scm_font_char = scm_primitive_eval (exp);
+ String font_char = "noteheads-" + ly_scm2string (scm_font_char);
-Molecule*
-Note_head::do_brew_molecule_p() const
-{
- Staff_symbol_referencer_interface si (this);
-
- Real inter_f = si.staff_space ()/2;
- int sz = si.line_count ()-1;
- Real p = si.position_f ();
- int streepjes_i = abs (p) < sz
- ? 0
- : (abs((int)p) - sz) /2;
+ Font_metric * fm = Font_interface::get_default_font (me);
+ Molecule out = fm->find_by_name (font_char);
+ if (out.empty_b())
+ {
+ me->warning (_f ("note head `%s' not found", font_char.to_str0 ()));
+ }
- String type;
- SCM style = get_elt_property ("style");
- if (gh_string_p (style))
+ int interspaces = Staff_symbol_referencer::line_count (me)-1;
+ int pos = (int)rint (Staff_symbol_referencer::get_position (me));
+ if (abs (pos) - interspaces > 1)
{
- type = ly_scm2string (style);
+ Interval hd = out.extent (X_AXIS);
+ Real left_ledger_protusion = hd.length ()/4;
+ Real right_ledger_protusion = left_ledger_protusion;
+
+ if (unsmob_grob(me->get_grob_property ("accidental-grob")))
+ {
+ /*
+ make a little room for accidentals.
+
+ TODO: this will look silly if a chord has ledger lines,
+ and only the bottom note has an accidental.
+ */
+
+ left_ledger_protusion *= 0.66;
+ right_ledger_protusion *= 0.9;
+ }
+
+ Interval l_extents = Interval (hd[LEFT] - left_ledger_protusion,
+ hd[RIGHT] + right_ledger_protusion);
+ out.add_molecule (Note_head::brew_ledger_lines (me, pos, interspaces,
+ l_extents,
+ ledger_take_space));
}
-
- Molecule* out =
- new Molecule (lookup_l()->afm_find (String ("noteheads-") + to_str (balltype_i ()) + type));
+ return out;
+}
- Box ledgerless = out->dim_;
- if (streepjes_i)
+MAKE_SCHEME_CALLBACK (Note_head,brew_molecule,1);
+SCM
+Note_head::brew_molecule (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+
+ /*
+ ledgers don't take space. See top of file.
+ */
+ return internal_brew_molecule (me, false).smobbed_copy ();
+}
+
+/*
+ Compute the width the head without ledgers.
+
+ -- there used to be some code from the time that ledgers
+ did take space. Nowadays, we can simply take the standard extent.
+ */
+Interval
+Note_head::head_extent (Grob *me, Axis a)
+{
+ Molecule * mol = me->get_molecule();
+ return mol ? mol ->extent (a) : Interval(0,0);
+}
+
+
+
+MAKE_SCHEME_CALLBACK (Note_head,brew_ez_molecule,1);
+
+SCM
+Note_head::brew_ez_molecule (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ int l = Note_head::get_balltype (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_ + 2)%7 + 'a';
+ s[0] = toupper (s[0]);
+
+ SCM charstr = scm_makfrom0str (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 pos = (int)rint (Staff_symbol_referencer::get_position (me));
+ int interspaces = Staff_symbol_referencer::line_count (me)-1;
+ if (abs (pos) - interspaces > 1)
{
- Direction dir = (Direction)sign (p);
- Interval hd = out->dim_[X_AXIS];
+ Interval hd = m.extent (X_AXIS);
Real hw = hd.length ()/4;
-
- Molecule ledger
- = lookup_l ()->ledger_line (Interval (hd[LEFT] - hw,
- hd[RIGHT] + hw));
-
- int parity = abs(int (p)) % 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);
- }
+ Interval extent = Interval (hd[LEFT] - hw, hd[RIGHT] + hw);
+ m.add_molecule (brew_ledger_lines (me, pos, interspaces, extent, false));
}
- out->dim_ = ledgerless;
- 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 log = gh_int2scm (get_balltype (me));
+ SCM result = gh_apply (v, scm_list_n (st, log, 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;
}
+int
+Note_head::get_balltype (Grob*me)
+{
+ SCM s = me->get_grob_property ("duration-log");
+ return gh_number_p (s) ? gh_scm2int (s) <? 2 : 0;
+}
+
+ADD_INTERFACE (Note_head,"note-head-interface",
+ "Note head",
+ "accidental-grob style stem-attachment-function");
+
projects / lilypond.git / blobdiff