source file of the GNU LilyPond music typesetter
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
+#include "note-head.hh"
+
#include <math.h>
-#include <ctype.h>
+#include <cctype>
+#include "directional-element-interface.hh"
#include "staff-symbol.hh"
#include "misc.hh"
#include "dots.hh"
-#include "note-head.hh"
#include "warn.hh"
#include "font-interface.hh"
-#include "stencil.hh"
#include "event.hh"
#include "rhythmic-head.hh"
#include "staff-symbol-referencer.hh"
#include "output-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.
-
- (Besides a separate ledger seems overkill. For what else would
- it be useful?)
-
+ clean up the mess left by ledger line handling.
*/
-
-/*
- TODO: ledger lines are also a property of the staff. Maybe move them
- to there?
- */
-Stencil
-Note_head::brew_ledger_lines (Grob *me,
- int pos,
- int interspaces,
- Interval x_extent,
- Real left_shorten,
- bool take_space)
-{
- Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
- Real inter_f = Staff_symbol_referencer::staff_space (me)/2;
- int line_count = ((abs (pos) < interspaces)
- ? 0
- : (abs (pos) - interspaces) / 2);
- Stencil stencil;
- if (line_count)
- {
- Real ledgerlinethickness =
- Staff_symbol::get_ledger_line_thickness (staff);
- Real blotdiameter = ledgerlinethickness;
- Interval y_extent =
- Interval (-0.5*(ledgerlinethickness),
- +0.5*(ledgerlinethickness));
- Stencil proto_ledger_line =
- Lookup::round_filled_box (Box (x_extent, y_extent), blotdiameter);
-
- x_extent[LEFT] += left_shorten;
- Stencil proto_first_line =
- Lookup::round_filled_box (Box (x_extent, y_extent), blotdiameter);
-
- if (!take_space)
- {
- proto_ledger_line.set_empty (true);
- proto_first_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 < line_count; i++)
- {
- Stencil ledger_line ((i == 0)
- ? proto_first_line
- : proto_ledger_line
- );
- ledger_line.translate_axis (-dir * inter_f * i * 2 + offs, Y_AXIS);
- stencil.add_stencil (ledger_line);
- }
- }
-
- return stencil;
-}
-
-Stencil
-internal_print (Grob *me, bool with_ledgers)
+static Stencil
+internal_print (Grob *me, String *font_char)
{
- SCM style = me->get_property ("style");
- if (!ly_c_symbol_p (style))
+ SCM style = me->get_property ("style");
+ if (!scm_is_symbol (style))
{
return Stencil ();
}
SCM log = scm_int2num (Note_head::get_balltype (me));
SCM proc = me->get_property ("glyph-name-procedure");
SCM scm_font_char = scm_call_2 (proc, log, style);
- String font_char = "noteheads-" + ly_scm2string (scm_font_char);
- Font_metric * fm = Font_interface::get_default_font (me);
- Stencil out = fm->find_by_name (font_char);
- if (out.is_empty ())
- {
- me->warning (_f ("note head `%s' not found", font_char.to_str0 ()));
- }
+ Font_metric *fm = Font_interface::get_default_font (me);
- int interspaces = Staff_symbol_referencer::line_count (me)-1;
- int pos = Staff_symbol_referencer::get_rounded_position (me);
- if (with_ledgers && interspaces >= 0
- && abs (pos) - interspaces > 1)
+ Direction stem_dir = CENTER;
+ if (Grob *stem = unsmob_grob (me->get_property ("stem")))
{
- Interval ledger_size = out.extent (X_AXIS);
- ledger_size.widen ( ledger_size.length ()/4);
-
- Real left_shorten =0.0;
- if (Grob * g = unsmob_grob (me->get_property ("accidental-grob")))
+ stem_dir = get_grob_direction (stem);
+ if (stem_dir == CENTER)
{
- /*
- 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.
- */
-
- Grob *common = g->common_refpoint (me, X_AXIS);
- Real d =
- linear_combination (Drul_array<Real> (me->extent (common, X_AXIS)[LEFT],
- g->extent (common, X_AXIS)[RIGHT]),
-
- 0.5);
-
- left_shorten = (-ledger_size[LEFT] + d) >? 0 ;
-
- /*
- TODO: shorten 2 ledger lines for the case natural +
- downstem.
- */
+ programming_error ("Must have stem dir for note head");
}
-
- out.add_stencil (Note_head::brew_ledger_lines (me, pos, interspaces,
- ledger_size,
- left_shorten,
- false));
}
- return out;
-}
+ Stencil out;
-MAKE_SCHEME_CALLBACK (Note_head,print,1);
-SCM
-Note_head::print (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
-
- /*
- ledgers don't take space. See top of file.
- */
- return internal_print (me, true).smobbed_copy ();
-}
-
-/*
- Compute the width the head without ledgers.
+ String prefix = "noteheads.";
+ String idx
+ = prefix + ((stem_dir == UP) ? "u" : "d") + ly_scm2string (scm_font_char);
+ out = fm->find_by_name (idx);
+ if (out.is_empty ())
+ {
+ idx = prefix + "s" + ly_scm2string (scm_font_char);
+ out = fm->find_by_name (idx);
+ }
- -- 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)
-{
- SCM brewer = me->get_property ("print-function");
- if (brewer == Note_head::print_proc)
+ if (out.is_empty ())
{
- Stencil mol = internal_print (me, false);
-
- if (!mol.is_empty ())
- return mol.extent (a);
+ me->warning (_f ("note head `%s' not found", idx.to_str0 ()));
}
else
{
- Stencil * mol = me->get_stencil ();
- if (mol)
- return mol->extent (a) ;
+ *font_char = idx;
}
-
- return Interval (0,0);
+
+ return out;
}
-/*
- This is necessary to prevent a cyclic dependency: the appearance of
- the ledgers depends on positioning, so the Grob::get_stencil () can
- not be used for determining the note head extent.
-
- */
-MAKE_SCHEME_CALLBACK (Note_head,extent,2);
+MAKE_SCHEME_CALLBACK (Note_head, print, 1);
SCM
-Note_head::extent (SCM smob, SCM axis)
+Note_head::print (SCM smob)
{
Grob *me = unsmob_grob (smob);
- return ly_interval2scm (head_extent (me, (Axis) ly_scm2int (axis)));
+ String idx;
+ return internal_print (me, &idx).smobbed_copy ();
}
-MAKE_SCHEME_CALLBACK (Note_head,brew_ez_stencil,1);
+MAKE_SCHEME_CALLBACK (Note_head, brew_ez_stencil, 1);
SCM
Note_head::brew_ez_stencil (SCM smob)
{
SCM cause = me->get_property ("cause");
SCM spitch = unsmob_music (cause)->get_property ("pitch");
- Pitch* pit = unsmob_pitch (spitch);
+ Pitch *pit = unsmob_pitch (spitch);
SCM idx = scm_int2num (pit->get_notename ());
SCM names = me->get_property ("note-names");
SCM charstr = SCM_EOL;
- if (ly_c_vector_p (names))
+ if (scm_is_vector (names))
charstr = scm_vector_ref (names, idx);
else
{
SCM at = scm_list_n (ly_symbol2scm ("ez-ball"),
charstr,
scm_int2num (b),
- scm_int2num (1-b),
+ scm_int2num (1 - b),
SCM_UNDEFINED);
Box bx (Interval (0, 1.0), Interval (-0.5, 0.5));
Stencil m (bx, at);
- int pos = Staff_symbol_referencer::get_rounded_position (me);
- int interspaces = Staff_symbol_referencer::line_count (me)-1;
- if (abs (pos) - interspaces > 1)
- {
- Interval hd = m.extent (X_AXIS);
- hd.widen ( hd.length ()/4);
- m.add_stencil (brew_ledger_lines (me, pos, interspaces, hd, 0, false));
- }
-
return m.smobbed_copy ();
}
-
Real
Note_head::stem_attachment_coordinate (Grob *me, Axis a)
{
SCM brewer = me->get_property ("print-function");
- Font_metric * fm = Font_interface::get_default_font (me);
-
+ Font_metric *fm = Font_interface::get_default_font (me);
+
if (brewer == Note_head::print_proc)
{
- SCM style = me->get_property ("style");
- if (!ly_c_symbol_p (style))
- {
- return 0.0;
- }
-
- SCM log = scm_int2num (Note_head::get_balltype (me));
- SCM proc = me->get_property ("glyph-name-procedure");
- SCM scm_font_char = scm_call_2 (proc, log, style);
- String font_char = "noteheads-" + ly_scm2string (scm_font_char);
-
- int k = fm->name_to_index (font_char) ;
+ String key;
+ internal_print (me, &key);
+ int k = fm->name_to_index (key);
if (k >= 0)
{
Box b = fm->get_indexed_char (k);
- Offset wxwy = fm->get_indexed_wxwy (k);
+ Offset wxwy = fm->attachment_point (key);
Interval v = b[a];
if (!v.is_empty ())
return 2 * (wxwy[a] - v.center ()) / v.length ();
}
}
-
+
/*
Fallback
- */
+ */
SCM v = me->get_property ("stem-attachment-function");
if (!ly_c_procedure_p (v))
return 0.0;
-
+
SCM result = scm_call_2 (v, me->self_scm (), scm_int2num (a));
- if (!ly_c_pair_p (result))
+ if (!scm_is_pair (result))
return 0.0;
- result = (a == X_AXIS) ? ly_car (result) : ly_cdr (result);
-
- return robust_scm2double (result,0);
+ result = (a == X_AXIS) ? scm_car (result) : scm_cdr (result);
+
+ return robust_scm2double (result, 0);
}
int
-Note_head::get_balltype (Grob*me)
+Note_head::get_balltype (Grob *me)
{
SCM s = me->get_property ("duration-log");
- return ly_c_number_p (s) ? ly_scm2int (s) <? 2 : 0;
+ return scm_is_number (s) ? scm_to_int (s) <? 2 : 0;
}
-ADD_INTERFACE (Note_head,"note-head-interface",
- "Note head",
- "note-names glyph-name-procedure accidental-grob style stem-attachment-function");
+ADD_INTERFACE (Note_head, "note-head-interface",
+ "Note head",
+ "note-names glyph-name-procedure accidental-grob style stem-attachment-function");
projects / lilypond.git / blobdiff