source file of the GNU LilyPond music typesetter
- (c) 1996, 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include "debug.hh"
-#include "spanner.hh"
+#include "pointer-group-interface.hh"
+#include "libc-extension.hh"
+#include "paper-column.hh"
#include "paper-column.hh"
#include "paper-score.hh"
-#include "molecule.hh"
-#include "paper-outputter.hh"
+#include "stencil.hh"
+#include "system.hh"
+#include "warn.hh"
+#include "moment.hh"
-void
-Spanner::do_print() const
+Grob *
+Spanner::clone () const
{
-#ifndef NPRINT
- DOUT << "Between " << classname (spanned_drul_[LEFT])
- << " and " << classname (spanned_drul_[RIGHT]) << '\n';
-
- if (broken_b ())
- DOUT << "Broken in " << to_str (broken_into_l_arr_.size ()) << " pieces";
-#endif
+ return new Spanner (*this);
}
void
-Spanner::break_into_pieces ()
+Spanner::do_break_processing ()
{
- if (broken_b ())
- return;
-
- Item * left = spanned_drul_[LEFT];
- Item * right = spanned_drul_[RIGHT];
-
- if (left == right)
- {
- warning (_ ("left spanpoint is right spanpoint\n"));
- return;
- }
-
- Link_array<Item> break_points = pscore_l_->broken_col_range (left,right);
+ //break_into_pieces
+ Item *left = spanned_drul_[LEFT];
+ Item *right = spanned_drul_[RIGHT];
+
+ if (!left || !right)
+ return;
- break_points.insert (left,0);
- break_points.push (right);
- for (int i=1; i < break_points.size(); i++)
+ if (get_system () || is_broken ())
+ return;
+
+ if (left == right)
{
- Breaking_information info;
- info.bounds_[LEFT] = break_points[i-1];
- info.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 = info.bounds_[d] ;
- if (!pc_l->line_l())
- pc_l = pc_l->find_prebroken_piece(- d);
+ Item *bound = left->find_prebroken_piece (d);
+ if (!bound)
+ programming_error ("no broken bound");
+ else if (bound->get_system ())
+ {
+ Spanner *span = dynamic_cast<Spanner *> (clone ());
+ span->set_bound (LEFT, bound);
+ span->set_bound (RIGHT, bound);
+
+ assert (span->get_system ());
+ span->get_system ()->typeset_grob (span);
+ broken_intos_.push_back (span);
+ }
+ }
+ while ((flip (&d)) != LEFT);
+ }
+ else
+ {
+ System *root = get_root_system (this);
+ vector<Item*> break_points = root->broken_col_range (left, right);
+
+ break_points.insert (break_points.begin () + 0, left);
+ break_points.push_back (right);
+
+ Slice parent_rank_slice;
+ parent_rank_slice.set_full ();
+
+ /*
+ Check if our parent in X-direction spans equally wide
+ or wider than we do.
+ */
+ for (int a = X_AXIS; a < NO_AXES; a++)
+ {
+ if (Spanner *parent = dynamic_cast<Spanner *> (get_parent ((Axis)a)))
+ {
+ parent_rank_slice.intersect (parent->spanned_rank_interval ());
+ }
+ }
+
+ for (vsize 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]->get_system ())
+ 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;
+ }
+
+ bool ok = parent_rank_slice.contains (bounds[LEFT]->get_column ()->get_rank ());
+ ok = ok && parent_rank_slice.contains (bounds[RIGHT]->get_column ()->get_rank ());
- assert (pc_l);
- if (!info.line_l_)
- info.line_l_ = pc_l-> line_l ();
- else
- assert( info.line_l_ = pc_l->line_l ());
+ if (!ok)
+ {
+ programming_error (to_string ("Spanner `%s' is not fully contained in parent spanner. Ignoring orphaned part",
+ name ().c_str ()));
+ continue;
+ }
+
- }
- while ((flip(&d))!= LEFT);
+ Spanner *span = dynamic_cast<Spanner *> (clone ());
+ span->set_bound (LEFT, bounds[LEFT]);
+ span->set_bound (RIGHT, bounds[RIGHT]);
- Spanner *span_p = dynamic_cast<Spanner*>(clone ());
- span_p->set_bounds(LEFT,info.bounds_[LEFT]);
- span_p->set_bounds(RIGHT,info.bounds_[RIGHT]);
- pscore_l_->typeset_element (span_p);
-
- info.broken_spanner_l_ = span_p;
- span_p->handle_broken_dependencies();
+ if (!bounds[LEFT]->get_system ()
- broken_into_l_arr_.push (span_p);
+ || !bounds[RIGHT]->get_system ()
+ || bounds[LEFT]->get_system () != bounds[RIGHT]->get_system ())
+ {
+ programming_error ("bounds of spanner are invalid");
+ span->suicide ();
+ }
+ else
+ {
+ bounds[LEFT]->get_system ()->typeset_grob (span);
+ broken_intos_.push_back (span);
+ }
+ }
}
+ vector_sort (broken_intos_, Spanner::less);
+ for (vsize i = broken_intos_.size (); i--;)
+ broken_intos_[i]->break_index_ = i;
}
-void
-Spanner::set_my_columns()
+vsize
+Spanner::get_break_index () const
{
- Direction i = (Direction)1;
- do
- {
- if (!spanned_drul_[i]->line_l())
- set_bounds(i,spanned_drul_[i]->find_prebroken_piece((Direction)-i));
- }
- while (flip(&i) != 1);
-}
+ return break_index_;
+}
void
-Spanner::set_bounds(Direction d, Item*i)
+Spanner::set_my_columns ()
{
- spanned_drul_[d] =i;
- if (i)
+ Direction i = (Direction) LEFT;
+ do
{
- i->used_b_ = true;
+ if (!spanned_drul_[i]->get_system ())
+ set_bound (i, spanned_drul_[i]->find_prebroken_piece ((Direction) -i));
}
+ while (flip (&i) != LEFT);
+}
- if (d== LEFT)
- {
- dim_cache_[X_AXIS]->parent_l_ = i->dim_cache_[X_AXIS];
- }
-
- if (spanned_drul_[Direction(-d)] == spanned_drul_[d]
- && i)
- warning (_f ("Spanner `%s\' with equal left and right spanpoints", classname (this)));
+Interval_t<int>
+Spanner::spanned_rank_interval () const
+{
+ Interval_t<int> iv (0, 0);
+
+ if (spanned_drul_[LEFT] && spanned_drul_[LEFT]->get_column ())
+ iv[LEFT] = spanned_drul_[LEFT]->get_column ()->get_rank ();
+ if (spanned_drul_[RIGHT] && spanned_drul_[RIGHT]->get_column ())
+ iv[RIGHT] = spanned_drul_[RIGHT]->get_column ()->get_rank ();
+ return iv;
}
+Interval_t<Moment>
+Spanner::spanned_time () const
+{
+ return spanned_time_interval (spanned_drul_[LEFT],
+ spanned_drul_[RIGHT]);
+}
+
+
+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::do_break_processing()
+Spanner::set_bound (Direction d, Grob *s)
{
- if (!line_l())
- break_into_pieces ();
- else
- handle_broken_dependencies();
+ Item *i = dynamic_cast<Item *> (s);
+ if (!i)
+ {
+ programming_error ("must have Item for spanner bound of " + name());
+ return;
+ }
+
+ spanned_drul_[d] = i;
+
+ /**
+ We check for System to prevent the column -> line_of_score
+ -> column -> line_of_score -> etc situation */
+ if (d == LEFT && !dynamic_cast<System *> (this))
+ set_parent (i, X_AXIS);
+
+ /*
+ Signal that this column needs to be kept alive. They need to be
+ kept alive to have meaningful position and linebreaking.
+
+ [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;
+ break_index_ = 0;
+ 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;
+ spanned_drul_[LEFT] = spanned_drul_[RIGHT] = 0;
}
+Real
+Spanner::spanner_length () const
+{
+ Real l = spanned_drul_[LEFT]->relative_coordinate (0, X_AXIS);
+ Real r = spanned_drul_[RIGHT]->relative_coordinate (0, X_AXIS);
-Interval
-Spanner::do_width() const
-{
- Real l = spanned_drul_[LEFT]->absolute_coordinate (X_AXIS);
- Real r = spanned_drul_[RIGHT]->absolute_coordinate (X_AXIS);
+ if (r < l)
+ programming_error ("spanner with negative length");
- if (r< l)
- warning ("Spanner with negative length");
-
- return Interval (0, r-l);
+ return r - l;
}
-Line_of_score *
-Spanner::line_l() const
+System *
+Spanner::get_system () const
{
if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
return 0;
- if (spanned_drul_[LEFT]->line_l() != spanned_drul_[RIGHT]->line_l())
+ if (spanned_drul_[LEFT]->get_system () != spanned_drul_[RIGHT]->get_system ())
return 0;
- return spanned_drul_[LEFT]->line_l();
+ return spanned_drul_[LEFT]->get_system ();
}
+Grob *
+Spanner::find_broken_piece (System *l) const
+{
+ vsize idx = binary_search (broken_intos_, (Spanner *)l, Spanner::less);
+ if (idx != VPOS)
+ return broken_intos_ [idx];
+ return 0;
+}
-Spanner*
-Spanner::find_broken_piece (Line_of_score*l) const
+Spanner *
+Spanner::broken_neighbor (Direction d) const
{
- for (int i=0; i < broken_into_l_arr_.size (); i++)
- {
- if (broken_into_l_arr_[i]->line_l () == l)
- return broken_into_l_arr_[i];
- }
+ if (!original_)
+ return 0;
+
+ vsize k = broken_spanner_index (this);
+ Spanner *orig = dynamic_cast<Spanner*> (original_);
+ int j = int (k) + d;
+ if (j < 0 || vsize (j) >= orig->broken_intos_.size ())
+ return 0;
- return 0;
+ return orig->broken_intos_[j];
}
-bool
-Spanner::broken_b() const
+int
+Spanner::compare (Spanner *const &p1, Spanner *const &p2)
{
- return broken_into_l_arr_.size();
+ return p1->get_system ()->get_rank () - p2->get_system ()->get_rank ();
}
-Array<Rod>
-Spanner::get_rods () const
+bool
+Spanner::less (Spanner *const &a, Spanner *const &b)
{
- Array<Rod> r;
- return r;
+ return a->get_system ()->get_rank () < b->get_system ()->get_rank ();
}
-Array<Spring>
-Spanner::get_springs () const
+bool
+Spanner::is_broken () const
{
- Array<Spring> s;
- return s;
+ return broken_intos_.size ();
}
-void
-Spanner::do_space_processing ()
+/*
+ If this is a broken spanner, return the amount the left end is to be
+ shifted horizontally so that the spanner starts after the initial
+ clef and key on the staves. This is necessary for ties, slurs,
+ crescendo and decrescendo signs, for example.
+*/
+Real
+Spanner::get_broken_left_end_align () const
{
- Array<Rod> rs (get_rods ());
- for (int i=0; i < rs.size (); i++)
- {
- rs[i].add_to_cols ();
- }
+ Paper_column *sc = dynamic_cast<Paper_column *> (spanned_drul_[LEFT]->get_column ());
- Array<Spring> ss (get_springs ());
- for (int i=0; i < ss.size (); i++)
+ // Relevant only if left span point is first column in line
+ if (sc != NULL
+ && sc->break_status_dir () == RIGHT)
{
- ss[i].add_to_cols ();
+ /*
+ We used to do a full search for the Break_align_item.
+ But that doesn't make a difference, since the Paper_column
+ is likely to contain only a Break_align_item.
+ */
+ return sc->extent (sc, X_AXIS)[RIGHT];
}
+
+ return 0.0;
+}
+
+void
+Spanner::derived_mark () const
+{
+ Direction d = LEFT;
+ do
+ if (spanned_drul_[d])
+ scm_gc_mark (spanned_drul_[d]->self_scm ());
+ while (flip (&d) != LEFT)
+ ;
+
+ for (vsize i = broken_intos_.size (); i--;)
+ scm_gc_mark (broken_intos_[i]->self_scm ());
}
/*
- UGH.
- */
+ Set left or right bound to IT.
+
+ Warning: caller should ensure that subsequent calls put in ITems
+ that are left-to-right ordered.
+*/
void
-Spanner::handle_broken_dependents ()
+add_bound_item (Spanner *sp, Grob *it)
{
- Spanner *unbrok = dynamic_cast<Spanner*> (original_l_);
- if (!unbrok || dim_cache_[Y_AXIS]->parent_l_)
- return;
-
- Spanner *refpoint = dynamic_cast<Spanner*> (unbrok->parent_l (Y_AXIS));
-
- if (refpoint)
+ if (!sp->get_bound (LEFT))
+ sp->set_bound (LEFT, it);
+ else
+ sp->set_bound (RIGHT, it);
+}
+
+MAKE_SCHEME_CALLBACK (Spanner, set_spacing_rods, 1);
+SCM
+Spanner::set_spacing_rods (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ SCM num_length = me->get_property ("minimum-length");
+ if (scm_is_number (num_length))
{
- Spanner * broken_refpoint = refpoint->find_broken_piece (line_l ());
- if (broken_refpoint)
- dim_cache_[Y_AXIS]->parent_l_ = broken_refpoint->dim_cache_[Y_AXIS];
- else
- programming_error ("Spanner y -refpoint lost.");
+ Rod r;
+ Spanner *sp = dynamic_cast<Spanner *> (me);
+ System *root = get_root_system (me);
+ Drul_array<Item*> bounds (sp->get_bound (LEFT),
+ sp->get_bound (RIGHT));
+ if (!bounds[LEFT] || !bounds[RIGHT])
+ return SCM_UNSPECIFIED;
+
+ vector<Item*> cols (root->broken_col_range (bounds[LEFT]->get_column (),
+ bounds[RIGHT]->get_column ()));
+
+ if (cols.size ())
+ {
+ Rod r ;
+ r.item_drul_[LEFT] = sp->get_bound (LEFT);
+ r.item_drul_[RIGHT] = cols[0]->find_prebroken_piece (LEFT);
+ r.distance_ = robust_scm2double (num_length, 0);
+ r.add_to_cols ();
+
+ r.item_drul_[LEFT] = cols.back ()->find_prebroken_piece (RIGHT);
+ r.item_drul_[RIGHT] = sp->get_bound (RIGHT);
+ r.add_to_cols ();
+ }
+
+ r.distance_ = robust_scm2double (num_length, 0);
+ r.item_drul_[LEFT] = sp->get_bound (LEFT);
+ r.item_drul_[RIGHT] = sp->get_bound (RIGHT);
+ r.add_to_cols ();
}
+
+ return SCM_UNSPECIFIED;
}
+
+/*
+ Return I such that SP == SP->ORIGINAL ()->BROKEN_INTOS_[I].
+*/
+int
+broken_spanner_index (Spanner const *sp)
+{
+ Spanner *parent = dynamic_cast<Spanner *> (sp->original ());
+ /* ugh: casting */
+ return find (parent->broken_intos_, (Spanner*) sp) - parent->broken_intos_.begin ();
+}
+
+Spanner *
+unsmob_spanner (SCM s)
+{
+ return dynamic_cast<Spanner *> (unsmob_grob (s));
+}
+
+MAKE_SCHEME_CALLBACK (Spanner, bounds_width, 1);
+SCM
+Spanner::bounds_width (SCM grob)
+{
+ Spanner *me = unsmob_spanner (grob);
+
+
+ Grob *common = me->get_bound (LEFT)->common_refpoint (me->get_bound (RIGHT), X_AXIS);
+
+ Interval w (me->get_bound (LEFT)->relative_coordinate (common, X_AXIS),
+ me->get_bound (RIGHT)->relative_coordinate (common, X_AXIS));
+
+ w -= me->relative_coordinate (common, X_AXIS);
+
+ return ly_interval2scm (w);
+}
+
+ADD_INTERFACE (Spanner,
+ "Some objects are horizontally spanned between objects. For"
+ " example, slurs, beams, ties, etc. These grobs form a subtype"
+ " called @code{Spanner}. All spanners have two span points"
+ " (these must be @code{Item} objects), one on the left and one"
+ " on the right. The left bound is also the X@tie{}reference"
+ " point of the spanner.",
+
+ /* properties */
+ "minimum-length "
+ "to-barline "
+ );
+
projects / lilypond.git / blobdiff