source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <stdio.h>
+#include <map>
+
#include "dots.hh"
#include "dot-column.hh"
#include "rhythmic-head.hh"
+#include "group-interface.hh"
+#include "staff-symbol-referencer.hh"
+#include "directional-element-interface.hh"
+#include "side-position-interface.hh"
+#include "axis-group-interface.hh"
+#include "stem.hh"
-void
-Dot_column::add_dots (Dots *d)
+/*
+ TODO: let Dot_column communicate with stem via Note_column.
+ */
+
+MAKE_SCHEME_CALLBACK (Dot_column,force_shift_callback,2);
+SCM
+Dot_column::force_shift_callback (SCM element_smob, SCM axis)
{
- dot_l_arr_.push (d);
- add_dependency (d);
- add_element (d);
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
+ assert (a == Y_AXIS);
+ me = me->get_parent (X_AXIS);
+
+ if (!to_boolean (me->get_grob_property ("positioning-done")))
+ {
+ me->set_grob_property ("positioning-done", SCM_BOOL_T);
+
+ do_shifts (me);
+ }
+ return gh_double2scm (0.0);
}
-void
-Dot_column::add_head (Rhythmic_head *r)
+MAKE_SCHEME_CALLBACK(Dot_column,side_position, 2);
+SCM
+Dot_column::side_position (SCM element_smob, SCM axis)
{
- if (!r->dots_l_)
- return ;
+ Grob *me = unsmob_grob (element_smob);
+ Axis a = (Axis) gh_scm2int (axis);
+ assert (a == X_AXIS);
+
+ Grob * stem = unsmob_grob (me->get_grob_property ("stem"));
+ if (stem
+ && !Stem::get_beam (stem)
+ && Stem::duration_log (stem) > 2
+ && !Stem::invisible_b (stem)
+ )
+ {
+ /*
+ trigger stem end & direction calculation.
+
+ This will add the stem to the support if a flag collision happens.
+ */
+ Stem::stem_end_position (stem);
+ }
+ return Side_position_interface::aligned_side (element_smob, axis);
+}
+
+
+
+struct Dot_position
+{
+ int pos_;
+ Direction dir_;
+ Grob *dot_;
+ bool extremal_head_;
+
- head_l_arr_.push (r);
- add_dependency (r);
- add_dots (r->dots_l_);
+ Dot_position ()
+ {
+ dot_ = 0;
+ pos_ =0;
+ dir_ = CENTER;
+ }
+};
+
+
+typedef std::map<int, Dot_position> Dot_configuration;
+
+/*
+ Value CFG according.
+
+*/
+int
+dot_config_badness (Dot_configuration const &cfg)
+{
+ int t = 0;
+ for (Dot_configuration::const_iterator i (cfg.begin ());
+ i != cfg.end (); i++)
+ {
+ int p = i->first;
+ int demerit = sqr (p - i->second.pos_) * 2;
+
+ int dot_move_dir = sign (p - i->second.pos_);
+ if (i->second.extremal_head_)
+ {
+ if (i->second.dir_
+ && dot_move_dir != i->second.dir_)
+ demerit += 3;
+ else if (dot_move_dir != UP)
+ demerit += 2;
+ }
+ else if (dot_move_dir != UP)
+ demerit += 1;
+
+ t += demerit;
+ }
+
+ return t;
}
void
-Dot_column::do_substitute_dependency (Score_element*o,Score_element*n)
+print_dot_configuration (Dot_configuration const &cfg)
{
- Item *oi =dynamic_cast <Item *> (o);
- Item *ni = n?dynamic_cast <Item *> (n):0;
+ printf ("dotconf { ");
+ for (Dot_configuration::const_iterator i (cfg.begin ());
+ i != cfg.end (); i++)
+ printf ("%d, " , i->first);
+ printf ("} \n");
+}
+
+/*
+ Shift K and following (preceding) entries up (down) as necessary to
+ prevent staffline collisions if D is up (down).
+
+ If K is in CFG, then do nothing.
+*/
+
+Dot_configuration
+shift_one (Dot_configuration const &cfg,
+ int k, Direction d)
+{
+ Dot_configuration new_cfg;
+ int offset = 0;
+
+ if (d > 0)
+ {
+ for (Dot_configuration::const_iterator i (cfg.begin ());
+ i != cfg.end (); i++)
+ {
+ int p = i->first;
+ if (p == k)
+ {
+ if (Staff_symbol_referencer::on_staffline (i->second.dot_, p))
+ p += d ;
+ else
+ p += 2* d;
+
+ offset = 2*d;
+
+ new_cfg[p] = i->second;
+ }
+ else
+ {
+ if (new_cfg.find (p) == new_cfg.end ())
+ {
+ offset =0;
+ }
+ new_cfg[p + offset] = i->second;
+ }
+ }
+ }
+ else
+ {
+ Dot_configuration::const_iterator i (cfg.end ());
+ do
+ {
+ i --;
+
+ int p = i->first;
+ if (p == k)
+ {
+ if (Staff_symbol_referencer::on_staffline (i->second.dot_, p))
+ p += d ;
+ else
+ p += 2* d;
+
+ offset = 2*d;
+
+ new_cfg[p] = i->second;
+ }
+ else
+ {
+ if (new_cfg.find (p) == new_cfg.end ())
+ {
+ offset =0;
+ }
+
+ new_cfg[p + offset] = i->second;
+ }
+ }
+ while (i != cfg.begin ());
+ }
- if (oi&&oi->is_type_b (Rhythmic_head::static_name ()))
- head_l_arr_.substitute ((Rhythmic_head*)oi, (Rhythmic_head*)ni);
- else if (oi && oi->is_type_b (Dots::static_name ()))
- dot_l_arr_.substitute ((Dots*) oi, (Dots*) ni);
+ return new_cfg;
}
+/*
+ Remove the collision in CFG either by shifting up or down, whichever
+ is best.
+ */
void
-Dot_column::do_pre_processing ()
+remove_collision (Dot_configuration &cfg, int p)
{
- Interval w;
- for (int i=0; i < head_l_arr_.size (); i++)
- w.unite (head_l_arr_[i]->width ());
+ bool collide = cfg.find (p) != cfg.end ();
+
+ if (collide)
+ {
+ Dot_configuration cfg_up = shift_one (cfg, p, UP);
+ Dot_configuration cfg_down = shift_one (cfg, p, DOWN);
+
+ int b_up = dot_config_badness (cfg_up);
+ int b_down = dot_config_badness (cfg_down);
+
+ cfg = (b_up < b_down) ? cfg_up : cfg_down;
+ }
+}
+
+SCM
+Dot_column::do_shifts (Grob*me)
+{
+ Link_array<Grob> dots =
+ Pointer_group_interface__extract_grobs (me, (Grob*)0, "dots");
+
+ dots.sort (compare_position);
+ for (int i = dots.size (); i--;)
+ if (!dots[i]->live ())
+ dots.del (i);
- if (!w.empty_b ())
- translate_axis (w[RIGHT] - width() [LEFT],X_AXIS);
+ Dot_configuration cfg;
+ for (int i =0;i < dots.size (); i++)
+ {
+ Dot_position dp;
+ dp.dot_ = dots[i];
+
+ Grob * note = dots[i]->get_parent (Y_AXIS);
+ if (note)
+ {
+ Grob *stem = unsmob_grob (note->get_grob_property ("stem"));
+ if (stem)
+ dp.extremal_head_ = Stem::first_head (stem) == note;
+ }
+
+ int p = int (Staff_symbol_referencer::get_position (dp.dot_));
+ dp.pos_= p;
+
+ if (dp.extremal_head_)
+ dp.dir_ = to_dir (dp.dot_->get_grob_property ("direction"));
+
+ remove_collision (cfg, p);
+ cfg[p] = dp;
+ if (Staff_symbol_referencer::on_staffline (dp.dot_, p))
+ remove_collision (cfg, p);
+ }
+
+ for (Dot_configuration::const_iterator i (cfg.begin ());
+ i != cfg.end (); i++)
+ {
+ Staff_symbol_referencer::set_position (i->second.dot_, i->first);
+ }
+
+ return SCM_UNSPECIFIED;
+}
+
+void
+Dot_column::add_head (Grob * me, Grob *rh)
+{
+ Grob * d = unsmob_grob (rh->get_grob_property ("dot"));
+ if (d)
+ {
+ Side_position_interface::add_support (me,rh);
+
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("dots"), d);
+ d->add_offset_callback (Dot_column::force_shift_callback_proc , Y_AXIS);
+ Axis_group_interface::add_element (me, d);
+ }
}
-IMPLEMENT_IS_TYPE_B1(Dot_column, Horizontal_group_item);
+
+
+
+ADD_INTERFACE (Dot_column, "dot-column-interface",
+ "Interface that groups dots so they form a column",
+ "positioning-done direction stem");
+
projects / lilypond.git / blobdiff