source file of the GNU LilyPond music typesetter
- (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include "spanner.hh"
#include "tie-column.hh"
#include "group-interface.hh"
#include "tie.hh"
#include "directional-element-interface.hh"
#include "rhythmic-head.hh"
-Tie_column::Tie_column (SCM s)
- : Spanner (s)
-{
- set_elt_pointer ("ties", SCM_EOL);
- set_extent_callback (0, X_AXIS);
- set_extent_callback (0, Y_AXIS);
-}
+
+
+
+
+/*
+ tie dir depends on what Tie_column does.
+*/
+/*
+ TODO: this doesn't follow standard pattern. Regularize.
+ */
void
-Tie_column::add_tie (Tie *s)
+Tie_column::add_tie (Grob*me,Grob *s)
{
- Pointer_group_interface g (this, "ties");
- if (!g.count ())
+ if (s->get_parent (Y_AXIS)
+ && Tie_column::has_interface (s->get_parent (Y_AXIS)))
+ return ;
+
+ if (! Pointer_group_interface::count (me, "ties"))
{
- set_bound (LEFT, s->head (LEFT));
- set_bound (RIGHT, s->head (RIGHT));
+ dynamic_cast<Spanner*> (me)->set_bound (LEFT, Tie::head (s,LEFT));
+ dynamic_cast<Spanner*> (me)->set_bound (RIGHT, Tie::head (s,RIGHT));
}
-
- Pointer_group_interface (this, "ties").add_element (s);
- s->add_dependency (this);
+ s->set_parent (me, Y_AXIS);
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("ties"), s);
+ s->add_dependency (me);
}
+void
+Tie_column::set_directions (Grob*me)
+{
+ werner_directions (me);
+}
+
int
-tie_compare (Tie* const & s1,
- Tie* const & s2)
+tie_compare (Grob* const & s1,
+ Grob* const & s2)
{
- return sign (s1->position_f () - s2->position_f());
+ return sign (Tie::get_position (s1) - Tie::get_position (s2));
}
/*
direction of the rest is determined by their staff position.
Ross forgets about the tie that is *on* the middle staff line. We
- assume it goes UP. (TODO: make this settable) */
+ assume it goes UP. (TODO: make me settable) */
void
-Tie_column::set_directions ()
+Tie_column::old_directions (Grob*me)
{
- Link_array<Tie> ties =
- Pointer_group_interface__extract_elements (this, (Tie*)0, "ties");
+ Link_array<Grob> ties =
+ Pointer_group_interface__extract_grobs (me, (Grob*)0, "ties");
+ for (int i = ties.size (); i--;)
+ if (get_grob_direction (ties[i]))
+ ties.del (i);
- Direction d = Directional_element_interface (this).get ();
+ if (!ties.size ())
+ return ;
+ Direction d = get_grob_direction (me);
if (d)
{
for (int i = ties.size (); i--;)
{
- Tie * t = ties[i];
- Directional_element_interface (t).set (d);
+ Grob * t = ties[i];
+ set_grob_direction (t, d);
}
return;
}
if (ties.size () == 1)
{
- Tie * t = ties[0];
- Directional_element_interface (t).set (t->get_default_dir ());
+ Grob * t = ties[0];
+ set_grob_direction (t,Tie::get_default_dir (t));
return;
}
ties.sort (tie_compare);
- Directional_element_interface tie0(ties[0]);
- tie0.set (DOWN);
+ set_grob_direction (ties[0], DOWN);
ties.del (0);
- Directional_element_interface tietop(ties.pop ());
- tietop.set (UP);
-
- for (int i=ties.size(); i--; )
+ set_grob_direction (ties.pop (), UP);
+ for (int i=ties.size (); i--;)
{
- Tie * t = ties[i];
- Real p = t->position_f ();
+ Grob * t = ties[i];
+ Real p = Tie::get_position (t);
Direction d = (Direction) sign (p);
if (!d)
d = UP;
- Directional_element_interface (t).set (d);
+ set_grob_direction (t, d);
}
}
-GLUE_SCORE_ELEMENT(Tie_column,after_line_breaking);
+/*
+
+% . The algorithm to choose the direction of the ties doesn't work
+% properly. I suggest the following for applying ties sequentially
+% from top to bottom:
+%
+% + The topmost tie is always `up'.
+%
+% + If there is a vertical gap to the last note above larger than
+% or equal to a fifth (or sixth?), the tie is `up', otherwise it
+% is `down'.
+%
+% + The bottommost tie is always `down'.
+
+ */
+void
+Tie_column::werner_directions (Grob *me)
+{
+ Link_array<Grob> ties =
+ Pointer_group_interface__extract_grobs (me, (Grob*)0, "ties");
+
+ if (!ties.size ())
+ return ;
+
+ ties.sort (tie_compare);
+
+ Direction d = get_grob_direction (me);
+ if (d)
+ {
+ for (int i = ties.size (); i--;)
+ {
+ Grob * t = ties[i];
+ if (!get_grob_direction (t))
+ set_grob_direction (t, d);
+ }
+ return ;
+ }
+
+ if (ties.size () == 1)
+ {
+ Grob * t = ties[0];
+ if (t->live ()
+ && !get_grob_direction (t))
+ set_grob_direction (t,Tie::get_default_dir (t));
+ return ;
+ }
+
+ Real last_down_pos = 10000;
+ if (!get_grob_direction (ties[0]))
+ set_grob_direction (ties[0], DOWN);
+
+ for (int i = ties.size (); i--;)
+ {
+ Grob *t = ties[i];
+
+ Direction d = get_grob_direction (t);
+ Real p = Tie::get_position (t);
+ if (!d)
+ {
+ if (last_down_pos - p > 5)
+ {
+ d = UP;
+ }
+ else
+ {
+ d = DOWN;
+ }
+
+ set_grob_direction (t, d);
+ }
+
+ if (d == DOWN)
+ last_down_pos = p;
+ }
+
+ return ;
+}
+
+
+MAKE_SCHEME_CALLBACK (Tie_column,after_line_breaking,1);
SCM
-Tie_column::member_after_line_breaking ()
+Tie_column::after_line_breaking (SCM smob)
{
- set_directions ();
- return SCM_UNDEFINED;
+ werner_directions (unsmob_grob (smob));
+ return SCM_UNSPECIFIED;
}
+
+
+
+ADD_INTERFACE (Tie_column,"tie-column-interface",
+ "that sets tie directions in a tied chord",
+ "direction");
+
projects / lilypond.git / blobdiff