source file of the GNU LilyPond music typesetter
- (c) 1996, 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996, 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
TODO: This is way too hairy
*/
#include "note-head.hh"
#include "lookup.hh"
#include "molecule.hh"
-#include "p-col.hh"
+#include "paper-column.hh"
#include "misc.hh"
#include "beam.hh"
#include "rest.hh"
+void
+Stem::set_direction (Direction d)
+{
+ if (!dir_)
+ warning (_ ("stem direction set already!"));
+ dir_ = d;
-
-Stem::~Stem ()
-{
+ /*
+ todo
+ */
}
Stem::Stem ()
{
- /*
- TODO: staff-size
- */
- beams_i_drul_[LEFT] = beams_i_drul_[RIGHT] = 0;
- mult_i_ = 0;
-
+ beams_i_drul_[LEFT] = beams_i_drul_[RIGHT] = -1;
yextent_drul_[DOWN] = yextent_drul_[UP] = 0;
flag_i_ = 2;
dir_ = CENTER;
- beam_dir_ = CENTER;
- dir_forced_b_ = false;
- stem_xdir_ = LEFT;
- staff_size_i_ = 8;
-
- beam_gap_i_ = 0;
beam_l_ = 0;
}
Interval_t<int>
Stem::head_positions () const
{
+ /*
+ Mysterious FreeBSD fix by John Galbraith. Somehow, the empty intervals
+ trigger FP exceptions on FreeBSD. Fix: do not return infinity
+
+ */
+ if (!head_l_arr_.size ())
+ {
+ return Interval_t<int> (100,-100);
+ }
+
Interval_t<int> r;
for (int i =0; i < head_l_arr_.size (); i++)
{
- int p = head_l_arr_[i]->position_i_;
+ int p = (int)head_l_arr_[i]->position_f ();
r[BIGGER] = r[BIGGER] >? p;
r[SMALLER] = r[SMALLER] <? p;
}
Stem::do_print () const
{
#ifndef NPRINT
- DOUT << "flag "<< flag_i_;
+ DEBUG_OUT << "flag "<< flag_i_;
if (beam_l_)
- DOUT << "beamed";
+ DEBUG_OUT << "beamed";
#endif
}
Real
Stem::chord_start_f () const
{
- return head_positions()[dir_] * paper ()->internote_f ();
+ return head_positions()[dir_] * staff_line_leading_f ()/2.0;
}
Real
{
// todo: margins
if (dir_ && dir_ * head_positions()[dir_] >= se*dir_)
- warning (_ ("weird stem size; check for narrow beams"));
+ warning (_ ("Weird stem size; check for narrow beams"));
yextent_drul_[dir_] = se;
void
Stem::add_head (Rhythmic_head *n)
{
+ n->stem_l_ = this;
n->add_dependency (this); // ?
- if (dynamic_cast<Note_head *> (n))
+ if (Note_head *nh = dynamic_cast<Note_head *> (n))
{
- head_l_arr_.push ((Note_head*)n);
+ head_l_arr_.push (nh);
}
- else if (dynamic_cast<Rest *> (n))
+ else if (Rest *r = dynamic_cast<Rest *> (n))
{
- rest_l_arr_.push ((Rest*)n);
+ rest_l_arr_.push (r);
}
}
Direction
Stem::get_default_dir () const
{
- return (get_center_distance (UP) >
- get_center_distance (DOWN))
- ? DOWN
- : UP;
+ int du = get_center_distance (UP);
+ int dd = get_center_distance (DOWN);
+
+ if (sign (dd - du))
+ return Direction (sign (dd -du));
+
+ return Direction (int(paper_l ()->get_var ("stem_default_neutral_direction")));
}
Direction
return dir_;
}
-void
-Stem::set_default_dir ()
-{
- dir_ = get_default_dir ();
-}
void
Stem::set_default_stemlen ()
{
- /*
- TODO
- urg; this should be handled by Stem_info
- */
+ Real length_f = 0.;
+ SCM scm_len = get_elt_property(length_scm_sym);
+ if (scm_len != SCM_BOOL_F)
+ {
+ length_f = gh_scm2double (SCM_CDR(scm_len));
+ }
+ else
+ length_f = paper_l ()->get_var ("stem_length0");
- Real length_f = paper ()->get_var ("stem_length");
- Real shorten_f = paper ()->get_var ("forced_stem_shorten");
+ bool grace_b = get_elt_property (grace_scm_sym) != SCM_BOOL_F;
+ String type_str = grace_b ? "grace_" : "";
- Real internote_f = paper ()->internote_f ();
- length_f /= internote_f;
- shorten_f /= internote_f;
+ Real shorten_f = paper_l ()->get_var (type_str + "forced_stem_shorten0");
- Real len = length_f;
if (!dir_)
- set_default_dir ();
+ dir_ = get_default_dir ();
+
/*
stems in unnatural (forced) direction should be shortened,
- accoding to [Roush & Gourlay]
+ according to [Roush & Gourlay]
*/
- else if (dir_ != get_default_dir ())
- len -= shorten_f / internote_f;
+ if (((int)chord_start_f ())
+ && (dir_ != get_default_dir ()))
+ length_f -= shorten_f;
if (flag_i_ >= 5)
- len += 2.0;
+ length_f += 2.0;
if (flag_i_ >= 6)
- len += 1.0;
+ length_f += 1.0;
- set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + len :
- head_positions()[SMALLER] - len);
+ set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + length_f:
+ head_positions()[SMALLER] - length_f);
- if (dir_ * stem_end_f () < 0)
- {
- set_stemend (0);
- }
+ bool no_extend_b = get_elt_property (no_stem_extend_scm_sym) != SCM_BOOL_F;
+ if (!grace_b && !no_extend_b && (dir_ * stem_end_f () < 0))
+ set_stemend (0);
}
+
//xxx
void
Stem::set_default_extents ()
if (!stem_length_f ())
set_default_stemlen ();
-
- if (dir_ == UP)
- stem_xdir_ = RIGHT;
- if (invisible_b ())
- stem_xdir_ = CENTER;
}
-/*
- TODO
-
- move into note_column.cc
-
- */
void
Stem::set_noteheads ()
{
if (dir_ < 0)
head_l_arr_.reverse ();
- head_l_arr_[0]->extremal_i_ = -1;
- head_l_arr_.top ()->extremal_i_ = 1;
+ Note_head * beginhead = head_l_arr_[0];
+ beginhead->set_elt_property (extremal_scm_sym, SCM_BOOL_T);
+ if (beginhead != head_l_arr_.top ())
+ head_l_arr_.top ()->set_elt_property (extremal_scm_sym, SCM_BOOL_T);
+
int parity=1;
- int lastpos = head_l_arr_[0]->position_i_;
+ int lastpos = int (beginhead->position_f ());
for (int i=1; i < head_l_arr_.size (); i ++)
{
- int dy =abs (lastpos- head_l_arr_[i]->position_i_);
+ int dy =abs (lastpos- (int)head_l_arr_[i]->position_f ());
if (dy <= 1)
{
if (parity)
- head_l_arr_[i]->x_dir_ = (stem_xdir_ == LEFT) ? LEFT : RIGHT;
+ head_l_arr_[i]->flip_around_stem (dir_);
parity = !parity;
}
else
parity = 1;
- lastpos = head_l_arr_[i]->position_i_;
+ lastpos = int (head_l_arr_[i]->position_f ());
}
}
if (yextent_drul_[DOWN]== yextent_drul_[UP])
set_default_extents ();
set_noteheads ();
- flag_i_ = flag_i_;
- transparent_b_ = invisible_b ();
- set_empty (invisible_b ());
+
+ if (invisible_b ())
+ {
+ set_elt_property (transparent_scm_sym, SCM_BOOL_T);
+ }
+ set_empty (invisible_b (), X_AXIS, Y_AXIS);
+ set_spacing_hints ();
+}
+
+
+
+/**
+ set stem directions for hinting the optical spacing correction.
+
+ Modifies DIR_LIST property of the Stem's Score_column
+
+ TODO: more advanced: supply height of noteheads as well, for more advanced spacing possibilities
+ */
+
+void
+Stem::set_spacing_hints ()
+{
+ if (!invisible_b ())
+ {
+ SCM scmdir = gh_int2scm (dir_);
+ SCM dirlist = column_l ()->get_elt_property (dir_list_scm_sym);
+ if (dirlist == SCM_BOOL_F)
+ dirlist = SCM_EOL;
+ else
+ dirlist = SCM_CDR (dirlist);
+
+ if (scm_sloppy_memq (scmdir, dirlist) == SCM_EOL)
+ {
+ dirlist = gh_cons (scmdir, dirlist);
+ column_l ()->set_elt_property (dir_list_scm_sym, dirlist);
+ }
+ }
}
+Molecule
+Stem::flag () const
+{
+ String style;
+ SCM st = get_elt_property (style_scm_sym);
+ if ( st != SCM_BOOL_F)
+ {
+ st = SCM_CDR(st);
+ style = ly_scm2string (st);
+ }
+
+ char c = (dir_ == UP) ? 'u' : 'd';
+ Molecule m = lookup_l ()->afm_find (String ("flags-") + to_str (c) +
+ to_str (flag_i_));
+ if (!style.empty_b ())
+ m.add_molecule(lookup_l ()->afm_find (String ("flags-") + to_str (c) + style));
+ return m;
+}
Interval
Stem::do_width () const
; // TODO!
else
{
- r = lookup_l ()->flag (flag_i_, dir_).dim_.x ();
+ r = flag ().dim_.x ();
r += note_delta_f ();
}
return r;
const Real ANGLE = 20* (2.0*M_PI/360.0); // ugh!
Molecule*
-Stem::brew_molecule_p () const
+Stem::do_brew_molecule_p () const
{
Molecule *mol_p =new Molecule;
Drul_array<Real> stem_y = yextent_drul_;
- Real dy = paper ()->internote_f ();
+ Real dy = staff_line_leading_f ()/2.0;
Real head_wid = 0;
if (head_l_arr_.size ())
- head_wid = head_l_arr_[0]->width ().length ();
+ head_wid = head_l_arr_[0]->extent (X_AXIS).length ();
stem_y[Direction(-dir_)] += dir_ * head_wid * tan(ANGLE)/(2*dy);
if (!invisible_b ())
{
- Atom ss =lookup_l ()->stem (stem_y[DOWN]*dy,
- stem_y[UP]*dy);
- mol_p->add_atom (ss);
+ Real stem_width = paper_l ()->get_var ("stemthickness");
+ Molecule ss =lookup_l ()->filledbox (Box (Interval (-stem_width/2, stem_width/2),
+ Interval (stem_y[DOWN]*dy, stem_y[UP]*dy)));
+ mol_p->add_molecule (ss);
}
if (!beam_l_ && abs (flag_i_) > 2)
{
- Atom fl = lookup_l ()->flag (flag_i_, dir_);
+ Molecule fl = flag ();
fl.translate_axis(stem_y[dir_]*dy, Y_AXIS);
- mol_p->add_atom (fl);
+ mol_p->add_molecule (fl);
}
if (head_l_arr_.size())
Real r=0;
if (head_l_arr_.size())
{
- Interval head_wid(0, head_l_arr_[0]->width ().length ());
- Real rule_thick(paper ()->rule_thickness ());
+ Interval head_wid(0, head_l_arr_[0]->extent (X_AXIS).length ());
+ Real rule_thick = paper_l ()->get_var ("stemthickness");
+
Interval stem_wid(-rule_thick/2, rule_thick/2);
- if (stem_xdir_ == CENTER)
+ if (dir_ == CENTER)
r = head_wid.center ();
else
- r = head_wid[stem_xdir_] - stem_wid[stem_xdir_];
+ r = head_wid[dir_] - stem_wid[dir_];
}
return r;
}
return note_delta_f () + Item::hpos_f ();
}
-/*
- TODO: head_l_arr_/rest_l_arr_ in do_substitute_dependent ()
- */
void
- Stem::do_substitute_dependency (Score_element*o,Score_element*n)
+Stem::do_substitute_element_pointer (Score_element*o,Score_element*n)
{
- Item * o_l = dynamic_cast <Item *> (o);
- Item * n_l = n? dynamic_cast <Item *> (n) : 0;
- head_l_arr_.substitute ((Note_head*)o_l, (Note_head*)n_l);
- rest_l_arr_.substitute ((Rest*)o_l, (Rest*)n_l);
+ if (Note_head*h=dynamic_cast<Note_head*> (o))
+ head_l_arr_.substitute (h, dynamic_cast<Note_head*>(n));
+ if (Rest *r=dynamic_cast<Rest*> (o))
+ rest_l_arr_.substitute (r, dynamic_cast<Rest*>(n));
+ if (Beam* b = dynamic_cast<Beam*> (o))
+ {
+ if (b == beam_l_)
+ beam_l_ = dynamic_cast<Beam*> (n);
+ }
+ Staff_symbol_referencer::do_substitute_element_pointer (o,n);
}
projects / lilypond.git / blobdiff