source file of the GNU LilyPond music typesetter
- (c) 1996, 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <math.h>
+#include <libc-extension.hh>
+
-#include "dimension-cache.hh"
#include "debug.hh"
#include "spanner.hh"
#include "paper-column.hh"
#include "paper-score.hh"
#include "molecule.hh"
#include "paper-outputter.hh"
-#include "score-column.hh"
+#include "paper-column.hh"
#include "line-of-score.hh"
#include "break-align-item.hh"
+#include "group-interface.hh"
void
-Spanner::break_into_pieces ()
+Spanner::do_break_processing ()
{
- if (line_l () || broken_b ())
- return;
-
+ //break_into_pieces
Item * left = spanned_drul_[LEFT];
Item * right = spanned_drul_[RIGHT];
- if (left == right)
+ if (!left || !right)
+ return;
+
+ /*
+ Check if our parent in X-direction spans equally wide
+ or wider than we do.
+ */
+ for (int a = X_AXIS; a < NO_AXES; a ++)
{
- warning (_ ("Left spanpoint is right spanpoint"));
- return;
+ if (Spanner* parent = dynamic_cast<Spanner*> (get_parent ((Axis)a)))
+ {
+ if (!parent->spanned_rank_iv ().contains_b (this->spanned_rank_iv ()))
+ {
+ programming_error (to_str ("Spanner `%s' is not fully contained in parent spanner `%s'.",
+ name ().ch_C (),
+ parent->name ().ch_C ()));
+ }
+ }
}
- Link_array<Item> break_points = pscore_l_->broken_col_range (left,right);
-
- break_points.insert (left,0);
- break_points.push (right);
+ if (line_l () || broken_b ())
+ return;
- for (int i=1; i < break_points.size(); i++)
+ if (left == right)
{
- Drul_array<Item*> bounds;
- bounds[LEFT] = break_points[i-1];
- bounds[RIGHT] = break_points[i];
+ /*
+ If we have a spanner spanning one column, we must break it
+ anyway because it might provide a parent for another item. */
Direction d = LEFT;
do
{
- Item *&pc_l = bounds[d] ;
- if (!pc_l->line_l())
- pc_l = pc_l->find_broken_piece(- d);
-
- assert (pc_l);
+ Item* bound = left->find_prebroken_piece (d);
+ if (!bound)
+ programming_error ("no broken bound");
+ else if (bound->line_l ())
+ {
+ Spanner * span_p = dynamic_cast<Spanner*> (clone ());
+ span_p->set_bound (LEFT, bound);
+ span_p->set_bound (RIGHT, bound);
+
+ assert (span_p->line_l ());
+ span_p->line_l ()->typeset_grob (span_p);
+ broken_into_l_arr_.push (span_p);
+ }
}
- while ((flip(&d))!= LEFT);
-
- Spanner *span_p = dynamic_cast<Spanner*>(clone ());
- span_p->set_bounds(LEFT,bounds[LEFT]);
- span_p->set_bounds(RIGHT,bounds[RIGHT]);
-
- pscore_l_->typeset_element (span_p);
- broken_into_l_arr_.push (span_p);
+ while ((flip (&d))!= LEFT);
}
+ else
+ {
+ Link_array<Item> break_points = pscore_l_->line_l_->broken_col_range (left,right);
+
+ break_points.insert (left,0);
+ break_points.push (right);
+ for (int i=1; i < break_points.size (); i++)
+ {
+ Drul_array<Item*> bounds;
+ bounds[LEFT] = break_points[i-1];
+ bounds[RIGHT] = break_points[i];
+ Direction d = LEFT;
+ do
+ {
+ if (!bounds[d]->line_l ())
+ bounds[d] = bounds[d]->find_prebroken_piece (- d);
+ }
+ while ((flip (&d))!= LEFT);
+
+ if (!bounds[LEFT] || ! bounds[RIGHT])
+ {
+ programming_error ("bounds of this piece aren't breakable. ");
+ continue;
+ }
+
+ Spanner *span_p = dynamic_cast<Spanner*> (clone ());
+ span_p->set_bound (LEFT,bounds[LEFT]);
+ span_p->set_bound (RIGHT,bounds[RIGHT]);
+
+ if (!bounds[LEFT]->line_l ()
+
+ || !bounds[RIGHT]->line_l ()
+ || bounds[LEFT]->line_l () != bounds[RIGHT]->line_l ())
+ {
+ programming_error ("bounds of spanner are invalid");
+ span_p->suicide ();
+ }
+ else
+ {
+ bounds[LEFT]->line_l ()->typeset_grob (span_p);
+ broken_into_l_arr_.push (span_p);
+ }
+ }
+ }
broken_into_l_arr_.sort (Spanner::compare);
}
void
-Spanner::set_my_columns()
+Spanner::set_my_columns ()
{
Direction i = (Direction) LEFT;
do
{
- if (!spanned_drul_[i]->line_l())
- set_bounds(i,spanned_drul_[i]->find_broken_piece((Direction) -i));
+ if (!spanned_drul_[i]->line_l ())
+ set_bound (i,spanned_drul_[i]->find_prebroken_piece ((Direction) -i));
}
- while (flip(&i) != LEFT);
+ while (flip (&i) != LEFT);
}
+Interval_t<int>
+Spanner::spanned_rank_iv ()
+{
+ Interval_t<int> iv (0, 0);
+
+ if (spanned_drul_[LEFT])
+ {
+ iv[LEFT] = Paper_column::rank_i (spanned_drul_[LEFT]->column_l ());
+ }
+ if (spanned_drul_[RIGHT])
+ {
+ iv[RIGHT] = Paper_column::rank_i (spanned_drul_[RIGHT]->column_l ());
+ }
+ return iv;
+}
+
+Item*
+Spanner::get_bound (Direction d) const
+{
+ return spanned_drul_ [d];
+}
+
+/*
+ Set the items that this spanner spans. If D == LEFT, we also set the
+ X-axis parent of THIS to S.
+*/
void
-Spanner::set_bounds(Direction d, Item*i)
+Spanner::set_bound (Direction d, Grob*s)
{
- spanned_drul_[d] =i;
- if (i)
+ Item * i = dynamic_cast<Item*> (s);
+ if (!i)
{
- i->used_b_ = true;
+ programming_error ("Must have Item for spanner bound.");
+ return;
}
+
+ spanned_drul_[d] =i;
/**
- Prevent the column -> line_of_score -> column -> line_of_score -> etc situation
- */
+ We check for Line_of_score to prevent the column -> line_of_score
+ -> column -> line_of_score -> etc situation */
if (d== LEFT && !dynamic_cast<Line_of_score*> (this))
{
set_parent (i, X_AXIS);
}
-
- if (spanned_drul_[Direction(-d)] == spanned_drul_[d]
- && i)
- warning (_f ("Spanner `%s' has equal left and right spanpoints", classname (this)));
-}
+ /*
+ Signal that this column needs to be kept alive. They need to be
+ kept alive to have meaningful position and linebreaking.
-
-void
-Spanner::do_break_processing()
-{
- break_into_pieces ();
+ [maybe we should try keeping all columns alive?, and perhaps
+ inherit position from their (non-)musical brother]
+
+ */
+ if (dynamic_cast<Paper_column*> (i))
+ {
+ Pointer_group_interface::add_grob (i, ly_symbol2scm ("bounded-by-me"), this);
+ }
}
-Spanner::Spanner ()
+Spanner::Spanner (SCM s)
+ : Grob (s)
{
spanned_drul_[LEFT]=0;
spanned_drul_[RIGHT]=0;
}
Spanner::Spanner (Spanner const &s)
- : Score_element (s)
+ : Grob (s)
{
spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
}
-
Real
-Spanner::spanner_length() const
+Spanner::spanner_length () const
{
Real l = spanned_drul_[LEFT]->relative_coordinate (0, X_AXIS);
Real r = spanned_drul_[RIGHT]->relative_coordinate (0, X_AXIS);
if (r< l)
- warning (_ ("spanner with negative length"));
-
+ programming_error ("spanner with negative length");
+
return r-l;
}
Line_of_score *
-Spanner::line_l() const
+Spanner::line_l () const
{
if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
return 0;
if (spanned_drul_[LEFT]->line_l () != spanned_drul_[RIGHT]->line_l ())
return 0;
- return spanned_drul_[LEFT]->line_l();
+ return spanned_drul_[LEFT]->line_l ();
}
-Score_element*
+Grob*
Spanner::find_broken_piece (Line_of_score*l) const
{
- Spanner* me = (Spanner*) this;
- me->break_into_pieces ();
-
- int idx = binsearch_link_array (broken_into_l_arr_, (Spanner*)l, Spanner::compare);
+ int idx = binsearch_link_array (broken_into_l_arr_, (Spanner*)l, Spanner::compare);
if (idx < 0)
return 0;
int
Spanner::compare (Spanner * const &p1, Spanner * const &p2)
{
- return p1->line_l ()->rank_i_ - p2->line_l ()->rank_i_;
+ return p1->line_l ()->rank_i_ - p2->line_l ()->rank_i_;
}
bool
-Spanner::broken_b() const
+Spanner::broken_b () const
{
- return broken_into_l_arr_.size();
+ return broken_into_l_arr_.size ();
}
-Array<Rod>
-Spanner::get_rods () const
-{
- Array<Rod> r;
- return r;
-}
-
-Array<Spring>
-Spanner::get_springs () const
-{
- Array<Spring> s;
- return s;
-}
-
-void
-Spanner::do_space_processing ()
-{
- Array<Rod> rs (get_rods ());
- for (int i=0; i < rs.size (); i++)
- {
- rs[i].add_to_cols ();
- }
-
- Array<Spring> ss (get_springs ());
- for (int i=0; i < ss.size (); i++)
- {
- ss[i].add_to_cols ();
- }
-}
/*
If this is a broken spanner, return the amount the left end is to be
Real
Spanner::get_broken_left_end_align () const
{
- Score_column *sc = dynamic_cast<Score_column*> (spanned_drul_[LEFT]->column_l());
+ Paper_column *sc = dynamic_cast<Paper_column*> (spanned_drul_[LEFT]->column_l ());
// Relevant only if left span point is first column in line
- if(sc != NULL &&
+ if (sc != NULL &&
sc->break_status_dir () == RIGHT)
{
/*
We used to do a full search for the Break_align_item.
- But that doesn't make a difference, since the Score_column
+ But that doesn't make a difference, since the Paper_column
is likely to contain only a Break_align_item.
*/
- return sc->extent (X_AXIS)[RIGHT];
+ return sc->extent (sc, X_AXIS)[RIGHT];
}
return 0.0;
}
+
+SCM
+Spanner::do_derived_mark ()
+{
+ /*
+ We'd be fucked if this is called before spanned_drul_[] is inited. */
+ if (status_c_ == ORPHAN)
+ return SCM_EOL;
+
+ Direction d = LEFT;
+ do
+ if (spanned_drul_[d])
+ scm_gc_mark (spanned_drul_[d]->self_scm ());
+ while (flip (&d) != LEFT);
+
+ for (int i= broken_into_l_arr_.size () ; i--;)
+ scm_gc_mark (broken_into_l_arr_[i]->self_scm ());
+
+ return SCM_EOL;
+}
+
+void
+add_bound_item (Spanner* sp, Item*it)
+{
+ if (!sp->get_bound (LEFT))
+ sp->set_bound (LEFT, it);
+ else
+ sp->set_bound (RIGHT, it);
+}
+
+/*
+ Extends EXTREMAL_PAIR to include IT
+ */
+static void
+extend_spanner_over_item (Item *it, SCM extremal_pair)
+{
+ if (!it)
+ return;
+ Item * col = it->column_l ();
+ Item * i1 = dynamic_cast<Item*> (unsmob_grob (ly_car (extremal_pair)));
+ Item * i2 = dynamic_cast<Item*> (unsmob_grob (ly_cdr (extremal_pair)));
+ int r = Paper_column::rank_i (col);
+ if (!i1 || r < Paper_column::rank_i (i1->column_l ()))
+ {
+ gh_set_car_x (extremal_pair, it->self_scm ());
+ }
+ if (!i2 || r > Paper_column::rank_i (i2->column_l ()))
+ {
+ gh_set_cdr_x (extremal_pair, it->self_scm ());
+ }
+}
+
+/*
+ Extends EXTREMAL_PAIR to include every grob in VALUE
+ */
+static void
+extend_spanner_over_elements (SCM value, SCM extremal_pair)
+{
+ if (gh_pair_p (value))
+ {
+ extend_spanner_over_elements (ly_car (value), extremal_pair);
+ extend_spanner_over_elements (ly_cdr (value), extremal_pair);
+ }
+ else if (unsmob_grob (value))
+ {
+ if (Spanner * sp = dynamic_cast<Spanner*> (unsmob_grob (value)))
+ {
+ extend_spanner_over_item (sp->get_bound (LEFT), extremal_pair);
+ extend_spanner_over_item (sp->get_bound (RIGHT), extremal_pair);
+ }
+ else if (Item * it= dynamic_cast<Item*> (unsmob_grob (value)))
+ extend_spanner_over_item (it, extremal_pair);
+ }
+}
+
+
+/*
+ Make sure that the left and right bounds encompasses all objects it
+ points to.
+
+ TODO: maybe be more specific. Most probably fucks up if someone sets
+ a pointer to the staff symbol in S
+*/
+void
+extend_spanner_over_elements (Grob*s)
+{
+ Spanner*sp = dynamic_cast<Spanner*> (s);
+
+ SCM s1 = sp->get_bound (LEFT) ? sp->get_bound (LEFT)->self_scm () : SCM_EOL;
+ SCM s2 = sp->get_bound (RIGHT) ? sp->get_bound (RIGHT)->self_scm () : SCM_EOL;
+
+ SCM pair = gh_cons (s1,s2);
+ extend_spanner_over_elements (sp->mutable_property_alist_, pair);
+
+ Grob *p1 = unsmob_grob (ly_car (pair));
+ Grob* p2 = unsmob_grob (ly_cdr (pair));
+ sp->set_bound (LEFT,p1);
+ sp->set_bound (RIGHT, p2);
+}
+
+
+MAKE_SCHEME_CALLBACK (Spanner,set_spacing_rods,1);
+SCM
+Spanner::set_spacing_rods (SCM smob)
+{
+ Grob*me = unsmob_grob (smob);
+
+ Rod r;
+ Spanner*sp = dynamic_cast<Spanner*> (me);
+ r.item_l_drul_[LEFT] = sp->get_bound (LEFT);
+ r.item_l_drul_[RIGHT] = sp->get_bound (RIGHT);
+ r.distance_f_ =
+ gh_scm2double (me->get_grob_property ("minimum-length"))
+ * 1.0;
+
+ r.add_to_cols ();
+ return SCM_UNSPECIFIED;
+}
+
+
+Spanner*
+unsmob_spanner (SCM s )
+{
+ return dynamic_cast<Spanner*> (unsmob_grob (s));
+}
projects / lilypond.git / blobdiff