source file of the GNU LilyPond music typesetter
- (c) 1999--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "break-align-interface.hh"
#include "spacing-interface.hh"
+
+/*
+ TODO: this file/class is too complex. Should figure out how to chop
+ this up even more.
+
+ */
+
class Spacing_spanner
{
public:
Spacing_spanner::prune_loose_columns (Grob*me,Link_array<Grob> *cols, Rational shortest)
{
Link_array<Grob> newcols;
- Real increment = gh_scm2double (me->get_grob_property ("spacing-increment"));
+ Real increment = robust_scm2double (me->get_grob_property ("spacing-increment"), 1.2);
for (int i=0; i < cols->size (); i++)
{
if (Item::breakable_b (cols->elem(i)) || Paper_column::musical_b (cols->elem (i)))
{
Grob *me = unsmob_grob (smob);
- Link_array<Grob> all (me->pscore_->system_->columns ()) ;
+ Link_array<Grob> all (me->pscore_->system_->columns ());
set_explicit_neighbor_columns (all);
assert (this_shortest.to_bool());
shortest_in_measure = shortest_in_measure <? this_shortest.main_part_;
}
- else if (!shortest_in_measure.infty_b()
+ else if (!shortest_in_measure.is_infinity ()
&& Item::breakable_b (cols[i]))
{
int j = 0;
Spacing_spanner::do_measure (Rational shortest, Grob*me, Link_array<Grob> *cols)
{
- Real headwid = gh_scm2double (me->get_grob_property ("spacing-increment"));
+ Real headwid = robust_scm2double (me->get_grob_property ("spacing-increment"), 1);
for (int i= 0; i < cols->size () - 1; i++)
{
Item * l = dynamic_cast<Item*> (cols->elem (i));
Real * fixed, Real * space,
Moment shortest)
{
-
*fixed = 0.0;
Direction d = LEFT;
Drul_array<Item*> cols(l,r);
what happens if we do this for non musical columns only.
*/
Interval lext = cols[d]->extent (cols [d], X_AXIS);
- *fixed += -d * lext[-d];
+ if (!lext.is_empty ())
+ *fixed += -d * lext[-d];
}
}
while (flip (&d) != LEFT);
+
if (l->breakable_b (l) && r->breakable_b(r))
{
if (dt)
mlen = *dt;
- Real incr = gh_scm2double (me->get_grob_property ("spacing-increment"));
+ Real incr = robust_scm2double (me->get_grob_property ("spacing-increment"), 1);
*space = *fixed + incr * double (mlen.main_part_ / shortest.main_part_) * 0.8;
}
else
{
Moment dt = Paper_column::when_mom (r) - Paper_column::when_mom (l);
- bool dummy;
- *space = *fixed + get_duration_space (me, dt, shortest.main_part_, &dummy);
+ if (dt == Moment (0,0))
+ {
+ /*
+ In this case, Staff_spacing should handle the job,
+ using dt when it is 0 is silly.
+ */
+ *space = *fixed + 0.5;
+ }
+ else
+ {
+ bool dummy;
+ *space = *fixed + get_duration_space (me, dt, shortest.main_part_, &dummy);
+ }
}
}
/*
Read hints from L and generate springs.
- */
+*/
void
Spacing_spanner::breakable_column_spacing (Grob*me, Item* l, Item *r,Moment shortest)
{
- Real max_fixed = -infinity_f;
- Real max_space = -infinity_f;
-
- standard_breakable_column_spacing (me, l, r, &max_fixed, &max_space ,
- shortest);
-
- for (SCM s = l->get_grob_property ("spacing-wishes");
- gh_pair_p (s); s = gh_cdr (s))
- {
- Item * spacing_grob = dynamic_cast<Item*> (unsmob_grob (gh_car (s)));
-
- if (!spacing_grob || !Staff_spacing::has_interface (spacing_grob))
- continue;
+ Real compound_fixed = 0.0;
+ Real compound_space = 0.0;
+ int wish_count = 0;
- Real space;
- Real fixed_space;
+ Moment dt = Paper_column::when_mom (r) - Paper_column::when_mom (l);
- /*
- column for the left one settings should be ok due automatic
- pointer munging.
+ if (dt == Moment (0,0))
+ {
+ for (SCM s = l->get_grob_property ("spacing-wishes");
+ gh_pair_p (s); s = gh_cdr (s))
+ {
+ Item * spacing_grob = dynamic_cast<Item*> (unsmob_grob (gh_car (s)));
- */
- assert (spacing_grob-> get_column () == l);
+ if (!spacing_grob || !Staff_spacing::has_interface (spacing_grob))
+ continue;
- Staff_spacing::get_spacing_params (spacing_grob,
- &space, &fixed_space);
+ Real space;
+ Real fixed_space;
- if (Paper_column::when_mom (r).grace_part_)
- {
/*
- Correct for grace notes.
+ column for the left one settings should be ok due automatic
+ pointer munging.
- Ugh. The 0.8 is arbitrary.
- */
- space *= 0.8;
- }
- if (space > max_space)
- {
- max_space = space;
- max_fixed = fixed_space;
- }
- }
+ */
+ assert (spacing_grob-> get_column () == l);
-
-
-
- if (isinf (max_space))
- {
- /*
- One situation where this can happen is when there is a column
- that only serves as a spanning point for a short staff-symbol.
+ Staff_spacing::get_spacing_params (spacing_grob,
+ &space, &fixed_space);
- ===============X===
+ if (Paper_column::when_mom (r).grace_part_)
+ {
+ /*
+ Correct for grace notes.
- |=======Y
+ Ugh. The 0.8 is arbitrary.
+ */
+ space *= 0.8;
+ }
- (here no StaffSpacing from Y to X is found.)
- */
- warning ("No spacing wishes found. Does your score have a staff?");
- max_space = 2.0;
- max_fixed = 1.0;
+ compound_space += space;
+ compound_fixed += fixed_space;
+ wish_count ++ ;
+ }
}
-
- if (l->break_status_dir() == RIGHT
- && Paper_column::when_mom (l) == Paper_column::when_mom (r))
+ if (compound_space <= 0.0 || !wish_count)
{
- /* Start of line: this space is not stretchable */
- max_fixed = max_space;
+ standard_breakable_column_spacing (me, l, r, &compound_fixed, &compound_space ,
+ shortest);
+ wish_count = 1;
+ }
+ else
+ {
+ compound_space /= wish_count;
+ compound_fixed /= wish_count;
}
+ assert (!isinf (compound_space));
+ compound_space = compound_space >? compound_fixed;
+
+
/*
Hmm. we do 1/0 in the next thing. Perhaps we should check if this
works on all architectures.
Do it more cleanly, or rename the property.
*/
- Real strength = 1 / (max_space - max_fixed);
- Real distance = max_space;
+ Real strength = 1 / (compound_space - compound_fixed);
+ Real distance = compound_space;
Spaceable_grob::add_spring (l, r, distance, strength, false);
}
Real
Spacing_spanner::get_duration_space (Grob*me, Moment d, Rational shortest, bool * expand_only)
{
- Real k = gh_scm2double (me->get_grob_property ("shortest-duration-space"));
- Real incr = gh_scm2double (me->get_grob_property ("spacing-increment"));
+ Real k = robust_scm2double (me->get_grob_property ("shortest-duration-space"), 1);
+ Real incr = robust_scm2double (me->get_grob_property ("spacing-increment"), 1);
if (d < shortest)
{
*/
dist = get_duration_space (me, shortest, shortest.main_part_, expand_only);
- Real grace_fact = 1.0;
- SCM gf = me->get_grob_property ("grace-space-factor");
- if (gh_number_p (gf))
- grace_fact = gh_scm2double (gf);
+ Real grace_fact
+ = robust_scm2double (me->get_grob_property ("grace-space-factor"), 1);
dist *= grace_fact;
}
projects / lilypond.git / blobdiff