source file of the GNU LilyPond music typesetter
- (c) 1996--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
TODO: This is way too hairy
*/
#include "stem.hh"
+#include "spanner.hh"
#include <cmath> // rint
using namespace std;
-#include "lookup.hh"
+#include "beam.hh"
#include "directional-element-interface.hh"
+#include "dot-column.hh"
+#include "font-interface.hh"
+#include "international.hh"
+#include "lookup.hh"
+#include "misc.hh"
#include "note-head.hh"
-#include "warn.hh"
#include "output-def.hh"
-#include "rhythmic-head.hh"
-#include "font-interface.hh"
#include "paper-column.hh"
-#include "misc.hh"
-#include "beam.hh"
-#include "rest.hh"
#include "pointer-group-interface.hh"
-#include "staff-symbol-referencer.hh"
+#include "rest.hh"
+#include "rhythmic-head.hh"
#include "side-position-interface.hh"
-#include "dot-column.hh"
+#include "staff-symbol-referencer.hh"
#include "stem-tremolo.hh"
+#include "warn.hh"
void
Stem::set_beaming (Grob *me, int beam_count, Direction d)
}
SCM lst = index_get_cell (pair, d);
- for (int i = 0; i < beam_count; i++)
- lst = scm_cons (scm_from_int (i), lst);
+ if (beam_count)
+ for (int i = 0; i < beam_count; i++)
+ lst = scm_cons (scm_from_int (i), lst);
+ else
+ lst = SCM_BOOL_F;
+
index_set_cell (pair, d, lst);
}
return 0;
SCM lst = index_get_cell (pair, d);
- return scm_ilength (lst);
+
+ int len = scm_ilength (lst);
+ return max (len, 0);
}
Interval
Drul_array<Grob *>
Stem::extremal_heads (Grob *me)
{
- const int inf = 1000000;
+ const int inf = INT_MAX;
Drul_array<int> extpos;
extpos[DOWN] = inf;
extpos[UP] = -inf;
Drul_array<Grob *> exthead (0, 0);
extract_grob_set (me, "note-heads", heads);
- for (int i = heads.size (); i--;)
+ for (vsize i = heads.size (); i--;)
{
Grob *n = heads[i];
int p = Staff_symbol_referencer::get_rounded_position (n);
return exthead;
}
-static int
-integer_compare (int const &a, int const &b)
-{
- return a - b;
-}
-
/* The positions, in ascending order. */
-Array<int>
+vector<int>
Stem::note_head_positions (Grob *me)
{
- Array<int> ps;
+ vector<int> ps;
extract_grob_set (me, "note-heads", heads);
- for (int i = heads.size (); i--;)
+ for (vsize i = heads.size (); i--;)
{
Grob *n = heads[i];
int p = Staff_symbol_referencer::get_rounded_position (n);
- ps.push (p);
+ ps.push_back (p);
}
- ps.sort (integer_compare);
+ vector_sort (ps, less<int> ());
return ps;
}
bool
Stem::is_invisible (Grob *me)
{
- Real stemlet_length = robust_scm2double (me->get_property ("stemlet-length"),
- 0.0);
+ return !is_normal_stem (me)
+ && (robust_scm2double (me->get_property ("stemlet-length"),
+ 0.0) == 0.0);
+}
+
- return !((head_count (me)
- || stemlet_length > 0.0)
- && scm_to_int (me->get_property ("duration-log")) >= 1);
+bool
+Stem::is_normal_stem (Grob *me)
+{
+ return head_count (me) && scm_to_int (me->get_property ("duration-log")) >= 1;
+}
+
+
+MAKE_SCHEME_CALLBACK (Stem, pure_height, 3)
+SCM
+Stem::pure_height (SCM smob, SCM start, SCM end)
+{
+ (void) start;
+ (void) end;
+
+ Grob *me = unsmob_grob (smob);
+ Interval iv;
+
+ if (!is_normal_stem (me))
+ return ly_interval2scm (iv);
+
+ /* if we are part of a cross-staff beam, return empty */
+ if (get_beam (me) && Beam::is_cross_staff (get_beam (me)))
+ return ly_interval2scm (iv);
+
+ Real ss = Staff_symbol_referencer::staff_space (me);
+ Real len = scm_to_double (calc_length (smob)) * ss / 2;
+ Direction dir = get_grob_direction (me);
+
+ Interval hp = head_positions (me);
+ if (dir == UP)
+ iv = Interval (0, len);
+ else
+ iv = Interval (-len, 0);
+
+ if (!hp.is_empty ())
+ iv.translate (hp[dir] * ss / 2);
+
+ return ly_interval2scm (iv);
}
MAKE_SCHEME_CALLBACK (Stem, calc_stem_end_position, 1)
if (!head_count (me))
return scm_from_double (0.0);
-
+ if (Grob *beam = get_beam (me))
+ {
+ (void) beam->get_property ("quantized-positions");
+ return me->get_property ("stem-end-position");
+ }
+
Real ss = Staff_symbol_referencer::staff_space (me);
int durlog = duration_log (me);
- Array<Real> a;
+ vector<Real> a;
/* WARNING: IN HALF SPACES */
Real length = robust_scm2double (me->get_property ("length"), 7);
Direction dir = get_grob_direction (me);
Interval hp = head_positions (me);
- Real st = dir ? hp[dir] + dir * length : 0;
+ Real stem_end = dir ? hp[dir] + dir * length : 0;
/* TODO: change name to extend-stems to staff/center/'() */
bool no_extend_b = to_boolean (me->get_property ("no-stem-extend"));
- if (!no_extend_b && dir * st < 0)
- st = 0.0;
+ if (!no_extend_b && dir * stem_end < 0)
+ stem_end = 0.0;
+
/* Make a little room if we have a upflag and there is a dot.
previous approach was to lengthen the stem. This is not
good typesetting practice. */
if (dots)
{
Real dp = Staff_symbol_referencer::get_position (dots);
- Real flagy = flag (me).extent (Y_AXIS)[-dir] * 2 / ss;
+ Interval flag_yext = flag (me).extent (Y_AXIS) * (2 / ss) + stem_end;
/* Very gory: add myself to the X-support of the parent,
which should be a dot-column. */
- if (dir * (st + flagy - dp) < 0.5)
+
+ if (flag_yext.distance (dp) < 0.5)
{
Grob *par = dots->get_parent (X_AXIS);
}
}
- return scm_from_double (st);
+ return scm_from_double (stem_end);
}
-
+/* Length is in half-spaces (or: positions) here. */
MAKE_SCHEME_CALLBACK (Stem, calc_length, 1)
SCM
Stem::calc_length (SCM smob)
(Stem_tremolo::raw_stencil () looks at the beam.) --hwn */
Real minlen = 1.0
- + 2 * Stem_tremolo::raw_stencil (t_flag).extent (Y_AXIS).length ()
- / ss;
+ + 2 * Stem_tremolo::vertical_length (t_flag) / ss;
+ /* We don't want to add the whole extent of the flag because the trem
+ and the flag can overlap partly. beam_translation gives a good
+ approximation */
if (durlog >= 3)
- {
- Interval flag_ext = flag (me).extent (Y_AXIS);
- if (!flag_ext.is_empty ())
- minlen += 2 * flag_ext.length () / ss;
-
- /* The clash is smaller for down stems (since the tremolo is
- angled up.) */
- if (dir == DOWN)
- minlen -= 1.0;
- }
+ {
+ Real beam_trans = Stem_tremolo::get_beam_translation (t_flag);
+ /* the obvious choice is (durlog - 2) here, but we need a bit more space. */
+ minlen += 2 * (durlog - 1.5) * beam_trans;
+
+ /* up-stems need even a little more space to avoid collisions. This
+ needs to be in sync with the tremolo positioning code in
+ Stem_tremolo::print */
+ if (dir == UP)
+ minlen += beam_trans;
+ }
length = max (length, minlen + 1.0);
}
if (!head_count (me))
return SCM_BOOL_T;
+ me->set_property ("positioning-done", SCM_BOOL_T);
+
extract_grob_set (me, "note-heads", ro_heads);
- Link_array<Grob> heads (ro_heads);
- heads.sort (compare_position);
+ vector<Grob*> heads (ro_heads);
+ vector_sort (heads, position_less);
Direction dir = get_grob_direction (me);
if (dir < 0)
- heads.reverse ();
+ reverse (heads);
Real thick = thickness (me);
Grob *hed = support_head (me);
+ if (!dir)
+ {
+ programming_error ("Stem dir must be up or down.");
+ dir = UP;
+ set_grob_direction (me, dir);
+ }
+
+ bool is_harmonic_centered = false;
+ for (vsize i = 0; i < heads.size (); i++)
+ is_harmonic_centered = is_harmonic_centered
+ || heads[i]->get_property ("style") == ly_symbol2scm ("harmonic");
+ is_harmonic_centered = is_harmonic_centered && is_invisible (me);
+
Real w = hed->extent (hed, X_AXIS)[dir];
- for (int i = 0; i < heads.size (); i++)
- heads[i]->translate_axis (w - heads[i]->extent (heads[i], X_AXIS)[dir],
- X_AXIS);
+ for (vsize i = 0; i < heads.size (); i++)
+ {
+ Real amount = w - heads[i]->extent (heads[i], X_AXIS)[dir];
+ if (is_harmonic_centered)
+ amount =
+ hed->extent (hed, X_AXIS).linear_combination (CENTER)
+ - heads[i]->extent (heads[i], X_AXIS).linear_combination (CENTER);
+
+ heads[i]->translate_axis (amount, X_AXIS);
+ }
bool parity = true;
Real lastpos = Real (Staff_symbol_referencer::get_position (heads[0]));
- for (int i = 1; i < heads.size (); i++)
+ for (vsize i = 1; i < heads.size (); i++)
{
Real p = Staff_symbol_referencer::get_position (heads[i]);
Real dy = fabs (lastpos- p);
return SCM_BOOL_T;
}
-
-
MAKE_SCHEME_CALLBACK(Stem, calc_direction, 1);
SCM
Stem::calc_direction (SCM smob)
dir = get_grob_direction (me);
}
else
- dir = get_default_dir (me);
+ {
+ SCM dd = me->get_property ("default-direction");
+ dir = to_dir (dd);
+ if (!dir)
+ return me->get_property ("neutral-direction");
+ }
return scm_from_int (dir);
}
-Direction
-Stem::get_default_dir (Grob *me)
+MAKE_SCHEME_CALLBACK(Stem, calc_default_direction, 1);
+SCM
+Stem::calc_default_direction (SCM smob)
{
+ Grob *me = unsmob_grob (smob);
+
Direction dir = CENTER;
int staff_center = 0;
Interval hp = head_positions (me);
if (!hp.is_empty ())
{
- int udistance = (int) (UP *hp[UP] - staff_center);
- int ddistance = (int) (DOWN *hp[DOWN] - staff_center);
+ int udistance = (int) (UP * hp[UP] - staff_center);
+ int ddistance = (int) (DOWN * hp[DOWN] - staff_center);
- if (sign (ddistance - udistance))
- dir = Direction (sign (ddistance - udistance));
- else
- dir = to_dir (me->get_property ("neutral-direction"));
+ dir = Direction (sign (ddistance - udistance));
}
- return dir;
+
+ return scm_from_int (dir);
}
-
-MAKE_SCHEME_CALLBACK (Stem, height, 2);
+MAKE_SCHEME_CALLBACK (Stem, height, 1);
SCM
-Stem::height (SCM smob, SCM ax)
+Stem::height (SCM smob)
{
- Axis a = (Axis)scm_to_int (ax);
Grob *me = unsmob_grob (smob);
- assert (a == Y_AXIS);
-
+ if (!is_normal_stem (me))
+ return ly_interval2scm (Interval ());
+
Direction dir = get_grob_direction (me);
- /* Trigger callback.
-
- UGH. Should be automatic
- */
Grob *beam = get_beam (me);
if (beam)
{
- beam->get_property ("positions");
+ /* trigger set-stem-lengths. */
+ beam->get_property ("quantized-positions");
}
- /* FIXME uncached? */
- Interval iv = me->get_stencil () ? me->get_stencil ()->extent (a) : Interval();
+ /*
+ Can't get_stencil(), since that would cache stencils too early.
+ This causes problems with beams.
+ */
+ Stencil *stencil = unsmob_stencil (print (smob));
+ Interval iv = stencil ? stencil->extent (Y_AXIS) : Interval();
if (beam)
{
if (dir == CENTER)
TODO: maybe property stroke-style should take different values,
e.g. "" (i.e. no stroke), "single" and "double" (currently, it's
'() or "grace"). */
- String flag_style;
+ string flag_style;
SCM flag_style_scm = me->get_property ("flag-style");
if (scm_is_symbol (flag_style_scm))
bool adjust = true;
- String staffline_offs;
- if (String::compare (flag_style, "mensural") == 0)
+ string staffline_offs;
+ if (flag_style == "mensural")
/* Mensural notation: For notes on staff lines, use different
flags than for notes between staff lines. The idea is that
flags are always vertically aligned with the staff lines,
{
int p = (int) (rint (stem_end_position (me)));
staffline_offs
- = Staff_symbol_referencer::on_staffline (me, p) ? "0" : "1";
+ = Staff_symbol_referencer::on_line (me, p) ? "0" : "1";
}
else
staffline_offs = "2";
staffline_offs = "";
char dir = (get_grob_direction (me) == UP) ? 'u' : 'd';
- String font_char = flag_style
+ string font_char = flag_style
+ to_string (dir) + staffline_offs + to_string (log);
Font_metric *fm = Font_interface::get_default_font (me);
Stencil flag = fm->find_by_name ("flags." + font_char);
SCM stroke_style_scm = me->get_property ("stroke-style");
if (scm_is_string (stroke_style_scm))
{
- String stroke_style = ly_scm2string (stroke_style_scm);
- if (!stroke_style.is_empty ())
+ string stroke_style = ly_scm2string (stroke_style_scm);
+ if (!stroke_style.empty ())
{
- String font_char = to_string (dir) + stroke_style;
+ string font_char = to_string (dir) + stroke_style;
Stencil stroke = fm->find_by_name ("flags." + font_char);
if (stroke.is_empty ())
me->warning (_f ("flag stroke `%s' not found", font_char));
return flag;
}
-MAKE_SCHEME_CALLBACK (Stem, width_callback, 2);
+MAKE_SCHEME_CALLBACK (Stem, width, 1);
SCM
-Stem::width_callback (SCM e, SCM ax)
+Stem::width (SCM e)
{
- (void) ax;
- assert (scm_to_int (ax) == X_AXIS);
Grob *me = unsmob_grob (e);
Interval r;
Stem::print (SCM smob)
{
Grob *me = unsmob_grob (smob);
+ Grob *beam = get_beam (me);
+
Stencil mol;
Direction d = get_grob_direction (me);
= to_boolean (me->get_property ("avoid-note-head"))
? last_head (me)
: first_head (me);
- Grob *beam = get_beam (me);
if (!lh && !stemlet)
return SCM_EOL;
Interval stem_y (min (y1, y2), max (y2, y1));
- if (Grob *hed = support_head (me))
+ if (Grob *head = support_head (me))
{
/*
must not take ledgers into account.
*/
- Interval head_height = hed->extent (hed, Y_AXIS);
- Real y_attach = Note_head::stem_attachment_coordinate (hed, Y_AXIS);
+ Interval head_height = head->extent (head, Y_AXIS);
+ Real y_attach = Note_head::stem_attachment_coordinate (head, Y_AXIS);
y_attach = head_height.linear_combination (y_attach);
stem_y[Direction (-d)] += d * y_attach / half_space;
// URG
Real stem_width = thickness (me);
Real blot
- = me->get_layout ()->get_dimension (ly_symbol2scm ("blotdiameter"));
+ = me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
Box b = Box (Interval (-stem_width / 2, stem_width / 2),
Interval (stem_y[DOWN] * half_space, stem_y[UP] * half_space));
{
Direction d = get_grob_direction (me);
Real blot
- = me->get_layout ()->get_dimension (ly_symbol2scm ("blotdiameter"));
+ = me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
Real stem_width = thickness (me);
Real half_space = Staff_symbol_referencer::staff_space (me) * 0.5;
Real y2 = robust_scm2double (me->get_property ("stem-end-position"), 0.0);
/*
move the stem to right of the notehead if it is up.
*/
-MAKE_SCHEME_CALLBACK (Stem, offset_callback, 2);
+MAKE_SCHEME_CALLBACK (Stem, offset_callback, 1);
SCM
-Stem::offset_callback (SCM element_smob, SCM)
+Stem::offset_callback (SCM smob)
{
- Grob *me = unsmob_grob (element_smob);
- Real r = 0.0;
+ Grob *me = unsmob_grob (smob);
+ extract_grob_set (me, "rests", rests);
+ if (rests.size ())
+ {
+ Grob *rest = rests.back ();
+ Real r = rest->extent (rest, X_AXIS).center ();
+ return scm_from_double (r);
+ }
+
+
if (Grob *f = first_head (me))
{
Interval head_wid = f->extent (f, X_AXIS);
Direction d = get_grob_direction (me);
Real real_attach = head_wid.linear_combination (d * attach);
- r = real_attach;
+ Real r = real_attach;
/* If not centered: correct for stem thickness. */
if (attach)
Real rule_thick = thickness (me);
r += -d * rule_thick * 0.5;
}
+ return scm_from_double (r);
}
- else
- {
- extract_grob_set (me, "rests", rests);
- if (rests.size ())
- {
- Grob *rest = rests.top ();
- r = rest->extent (rest, X_AXIS).center ();
- }
- }
- return scm_from_double (r);
+
+ programming_error ("Weird stem.");
+ return scm_from_double (0.0);
}
Spanner *
return si;
}
-/* TODO: add extra space for tremolos! */
MAKE_SCHEME_CALLBACK(Stem, calc_stem_info, 1);
SCM
Stem::calc_stem_info (SCM smob)
Real staff_space = Staff_symbol_referencer::staff_space (me);
Grob *beam = get_beam (me);
+
+ if (beam)
+ {
+ (void) beam->get_property ("beaming");
+ }
+
Real beam_translation = Beam::get_beam_translation (beam);
Real beam_thickness = Beam::get_thickness (beam);
int beam_count = Beam::get_direction_beam_count (beam, my_dir);
+ Real length_fraction
+ = robust_scm2double (me->get_property ("length-fraction"), 1.0);
/* Simple standard stem length */
SCM details = me->get_property ("details");
SCM lengths = scm_cdr (scm_assq (ly_symbol2scm ("beamed-lengths"), details));
-
Real ideal_length
= scm_to_double (robust_list_ref (beam_count - 1, lengths))
-
* staff_space
+ * length_fraction
+
/* stem only extends to center of beam
*/
- 0.5 * beam_thickness;
/* Condition: sane minimum free stem length (chord to beams) */
lengths = scm_cdr (scm_assq (ly_symbol2scm ("beamed-minimum-free-lengths"), details));
- Real length_fraction
- = robust_scm2double (me->get_property ("length-fraction"), 1.0);
Real ideal_minimum_free
= scm_to_double (robust_list_ref (beam_count - 1, lengths))
- * staff_space * length_fraction;
+ * staff_space
+ * length_fraction;
+
+ Real height_of_my_trem = 0.0;
+ Grob *trem = unsmob_grob (me->get_object ("tremolo-flag"));
+ if (trem)
+ {
+ height_of_my_trem
+ = Stem_tremolo::vertical_length (trem)
+ /* hack a bit of space around the trem. */
+ + beam_translation;
+ }
+
/* UGH
It seems that also for ideal minimum length, we must use
the maximum beam count (for this direction):
Real ideal_minimum_length = ideal_minimum_free
+ height_of_my_beams
+ + height_of_my_trem
/* stem only extends to center of beam */
- 0.5 * beam_thickness;
Real minimum_free
= scm_to_double (robust_list_ref (beam_count - 1, bemfl))
- * staff_space;
+ * staff_space
+ * length_fraction;
- Real minimum_length = minimum_free
+ Real minimum_length = max (minimum_free, height_of_my_trem)
+ height_of_my_beams
/* stem only extends to center of beam */
- 0.5 * beam_thickness;
- if (Grob *tremolo = unsmob_grob (me->get_object ("tremolo-flag")))
- {
- Interval y_ext = tremolo->extent (tremolo, Y_AXIS);
- y_ext.widen (0.5); // FIXME. Should be tunable?
- minimum_length = max (minimum_length, y_ext.length ());
- }
-
ideal_y *= my_dir;
Real minimum_y = note_start + minimum_length;
Real shortest_y = minimum_y * my_dir;
return le;
}
+bool
+Stem::is_cross_staff (Grob *stem)
+{
+ Grob *beam = unsmob_grob (stem->get_object ("beam"));
+ return beam && Beam::is_cross_staff (beam);
+}
+
+MAKE_SCHEME_CALLBACK (Stem, cross_staff, 1)
+SCM
+Stem::cross_staff (SCM smob)
+{
+ return scm_from_bool (is_cross_staff (unsmob_grob (smob)));
+}
+
/* FIXME: Too many properties */
-ADD_INTERFACE (Stem, "stem-interface",
+ADD_INTERFACE (Stem,
"The stem represent the graphical stem. "
"In addition, it internally connects note heads, beams and"
"tremolos. "
"should be shortened. The list gives an amount depending on the number "
"of flags/beams."
"@end table\n"
-
,
/* properties */
-
"avoid-note-head "
"beam "
"beaming "
+ "default-direction "
"details "
"direction "
"duration-log "
"french-beaming "
"length "
"length-fraction "
+ "max-beam-connect "
"neutral-direction "
"no-stem-extend "
"note-heads "
projects / lilypond.git / blobdiff