/*
- spanner.cc -- implement Spanner
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1996--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1996--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "pointer-group-interface.hh"
#include "libc-extension.hh"
-#include "paper-column.hh"
+#include "moment.hh"
#include "paper-column.hh"
#include "paper-score.hh"
+#include "pointer-group-interface.hh"
#include "stencil.hh"
#include "system.hh"
#include "warn.hh"
-#include "moment.hh"
Grob *
Spanner::clone () const
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 ());
- }
+ parent_rank_slice.intersect (parent->spanned_rank_interval ());
}
for (vsize i = 1; i < break_points.size (); i++)
span->set_bound (RIGHT, bounds[RIGHT]);
if (!bounds[LEFT]->get_system ()
-
|| !bounds[RIGHT]->get_system ()
|| bounds[LEFT]->get_system () != bounds[RIGHT]->get_system ())
{
Item *
Spanner::get_bound (Direction d) const
{
- return spanned_drul_ [d];
+ return spanned_drul_[d];
}
/*
Item *i = dynamic_cast<Item *> (s);
if (!i)
{
- programming_error ("must have Item for spanner bound");
+ programming_error ("must have Item for spanner bound of " + name());
return;
}
[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);
: Grob (s)
{
break_index_ = 0;
- spanned_drul_[LEFT] = 0;
- spanned_drul_[RIGHT] = 0;
+ spanned_drul_.set (0, 0);
+ pure_property_cache_ = SCM_UNDEFINED;
}
Spanner::Spanner (Spanner const &s)
: Grob (s)
{
- spanned_drul_[LEFT] = spanned_drul_[RIGHT] = 0;
+ spanned_drul_.set (0, 0);
+ pure_property_cache_ = SCM_UNDEFINED;
}
Real
Grob *
Spanner::find_broken_piece (System *l) const
{
- vsize idx = binary_search (broken_intos_, (Spanner *)l, Spanner::less);
+ vsize idx = binary_search (broken_intos_, (Spanner *) l, Spanner::less);
if (idx != VPOS)
return broken_intos_ [idx];
return 0;
void
Spanner::derived_mark () const
{
+ scm_gc_mark (pure_property_cache_);
+
Direction d = LEFT;
do
if (spanned_drul_[d])
{
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),
return ly_interval2scm (w);
}
-ADD_INTERFACE (Spanner,
- "Some objects are horizontally spanned between objects. For\n"
- "example, slur, beam, tie, etc. These grobs form a subtype called\n"
- "@code{Spanner}. All spanners have two span-points (these must be\n"
- "@code{Item} objects), one on the left and one on the right. The left bound is\n"
- "also the X-reference point of the spanner.\n",
+MAKE_SCHEME_CALLBACK (Spanner, kill_zero_spanned_time, 1);
+SCM
+Spanner::kill_zero_spanned_time (SCM grob)
+{
+ Spanner *me = unsmob_spanner (grob);
+ Interval_t<Moment> moments = me->spanned_time ();
+ /*
+ Remove the line or hairpin at the start of the line. For
+ piano voice indicators, it makes no sense to have them at
+ the start of the line.
+ I'm not sure what the official rules for glissandi are, but
+ usually the 2nd note of the glissando is "exact", so when playing
+ from the start of the line, there is no need to glide.
+
+ From a typographical p.o.v. this makes sense, since the amount of
+ space left of a note at the start of a line is very small.
+
+ --hwn.
+
+ */
+ if (moments.length () == Moment (0, 0))
+ me->suicide ();
+
+ return SCM_UNSPECIFIED;
+}
+
+SCM
+Spanner::get_cached_pure_property (SCM sym, int start, int end)
+{
+ // The pure property cache is indexed by (name start . end), where name is
+ // a symbol, and start and end are numbers referring to the starting and
+ // ending column ranks of the current line.
+ if (scm_hash_table_p (pure_property_cache_) == SCM_BOOL_F)
+ return SCM_UNDEFINED;
+
+ SCM key = scm_cons (sym, scm_cons (scm_from_int (start), scm_from_int (end)));
+ return scm_hash_ref (pure_property_cache_, key, SCM_UNDEFINED);
+}
+
+void
+Spanner::cache_pure_property (SCM sym, int start, int end, SCM val)
+{
+ if (scm_hash_table_p (pure_property_cache_) == SCM_BOOL_F)
+ pure_property_cache_ = scm_c_make_hash_table (17);
+
+ SCM key = scm_cons (sym, scm_cons (scm_from_int (start), scm_from_int (end)));
+ scm_hash_set_x (pure_property_cache_, key, val);
+}
+
+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