/*
- break-align-engraver.cc -- implement Break_align_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1999--2006 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 "engraver.hh"
#include "protected-scm.hh"
#include "axis-group-interface.hh"
#include "context.hh"
#include "translator-group.hh"
+#include "item.hh"
#include "translator.icc"
Item *left_edge_;
void add_to_group (SCM, Item *);
+ void create_alignment (Grob_info);
protected:
void stop_translation_timestep ();
virtual void derived_mark () const;
public:
TRANSLATOR_DECLARATIONS (Break_align_engraver);
- DECLARE_ACKNOWLEDGER (break_aligned);
+ void acknowledge_break_aligned (Grob_info);
+ void acknowledge_break_alignable (Grob_info);
};
void
left_edge_ = 0;
}
-Break_align_engraver::Break_align_engraver ()
+Break_align_engraver::Break_align_engraver (Context *c)
+ : Engraver (c)
{
column_alist_ = SCM_EOL;
left_edge_ = 0;
scm_gc_mark (column_alist_);
}
+void
+Break_align_engraver::acknowledge_break_alignable (Grob_info inf)
+{
+ /*
+ Special case for MetronomeMark: filter out items which will be aligned
+ on note heads rather than prefatory material
+ */
+ if (!Item::is_non_musical (inf.item ()))
+ return;
+
+ if (!align_)
+ create_alignment (inf);
+
+ Grob *g = inf.grob ();
+
+ if (!g->get_parent (X_AXIS))
+ g->set_parent (align_, X_AXIS);
+}
+
void
Break_align_engraver::acknowledge_break_aligned (Grob_info inf)
{
if (Item *item = dynamic_cast<Item *> (inf.grob ()))
{
/*
- Removed check for item->empty (X_AXIS). --hwn 20/1/04
+ Removed check for item->empty (X_AXIS). --hwn 20/1/04
*/
if (item->get_parent (X_AXIS))
- return;
+ return;
if (!Item::is_non_musical (item))
- return;
+ return;
SCM align_name = item->get_property ("break-align-symbol");
if (!scm_is_symbol (align_name))
- return;
-
+ return;
+
if (!align_)
- {
- align_ = make_item ("BreakAlignment", SCM_EOL);
+ create_alignment (inf);
- Context *origin = inf.origin_contexts (this)[0];
+ add_to_group (align_name, item);
+ }
+}
+
+void
+Break_align_engraver::create_alignment (Grob_info inf)
+{
+ align_ = make_item ("BreakAlignment", SCM_EOL);
- Translator_group *tg = origin->implementation ();
- Engraver *random_source = dynamic_cast<Engraver *> (unsmob_translator (scm_car (tg->get_simple_trans_list ())));
+ Context *origin = inf.origin_contexts (this)[0];
- /*
- Make left edge appear to come from same context as clef/bar-line etc.
- */
- left_edge_ = make_item_from_properties (random_source,
- ly_symbol2scm ("LeftEdge"),
- SCM_EOL,
- "LeftEdge");
- add_to_group (left_edge_->get_property ("break-align-symbol"),
- left_edge_);
- }
+ Translator_group *tg = origin->implementation ();
+ Engraver *random_source = unsmob<Engraver> (scm_car (tg->get_simple_trans_list ()));
+ if (!random_source)
+ random_source = this;
- add_to_group (align_name, item);
- }
+ /*
+ Make left edge appear to come from same context as clef/bar-line etc.
+ */
+ left_edge_ = random_source->make_item ("LeftEdge", SCM_EOL);
+ add_to_group (left_edge_->get_property ("break-align-symbol"),
+ left_edge_);
}
void
SCM s = scm_assoc (align_name, column_alist_);
Item *group = 0;
- if (s != SCM_BOOL_F)
+ if (scm_is_true (s))
{
- Grob *e = unsmob_grob (scm_cdr (s));
+ Grob *e = unsmob<Grob> (scm_cdr (s));
group = dynamic_cast<Item *> (e);
}
else
column_alist_ = scm_assoc_set_x (column_alist_, align_name, group->self_scm ());
- Break_align_interface::add_element (align_, group);
+ Break_alignment_interface::add_element (align_, group);
}
Axis_group_interface::add_element (group, item);
}
-ADD_ACKNOWLEDGER (Break_align_engraver, break_aligned);
+
+void
+Break_align_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Break_align_engraver, break_aligned);
+ ADD_ACKNOWLEDGER (Break_align_engraver, break_alignable);
+}
+
ADD_TRANSLATOR (Break_align_engraver,
- "Align grobs with corresponding @code{break-align-symbols} into "
- "groups, and order the groups according to @code{breakAlignOrder}. "
- "The left edge of the alignment gets a separate group, with a symbol @code{left-edge}. ",
- /* create */ "BreakAlignment BreakAlignGroup LeftEdge",
- /* accept */ "",
- /* read */ "",
- /* write */ "");
+ /* doc */
+ "Align grobs with corresponding @code{break-align-symbols}"
+ " into groups, and order the groups according to"
+ " @code{breakAlignOrder}. The left edge of the alignment gets"
+ " a separate group, with a symbol @code{left-edge}.",
+
+ /* create */
+ "BreakAlignment "
+ "BreakAlignGroup "
+ "LeftEdge ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff