-/*
- break-align-engraver.cc -- implement Break_align_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1999--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
+
+ Copyright (C) 1999--2014 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 "break-align-interface.hh"
#include "axis-group-interface.hh"
#include "context.hh"
#include "translator-group.hh"
+#include "item.hh"
+
+#include "translator.icc"
class Break_align_engraver : public Engraver
{
SCM column_alist_;
Item *left_edge_;
- void add_to_group (SCM,Item*);
+ void add_to_group (SCM, Item *);
+ void create_alignment (Grob_info);
protected:
- virtual void acknowledge_grob (Grob_info i);
- virtual void stop_translation_timestep ();
+ void stop_translation_timestep ();
virtual void derived_mark () const;
- void add_column (SCM);
-
public:
TRANSLATOR_DECLARATIONS (Break_align_engraver);
+ DECLARE_ACKNOWLEDGER (break_aligned);
+ DECLARE_ACKNOWLEDGER (break_alignable);
};
-void
-Break_align_engraver::add_column (SCM smob)
-{
- Grob * e = unsmob_grob (smob);
- Break_align_interface::add_element (align_,e);
-
-}
-
void
Break_align_engraver::stop_translation_timestep ()
{
- for (SCM p = column_alist_; scm_is_pair (p); p = scm_cdr (p))
- {
- SCM pair = scm_car (p);
- add_column (scm_cdr (pair));
- }
column_alist_ = SCM_EOL;
align_ = 0;
left_edge_ = 0;
}
-
Break_align_engraver::Break_align_engraver ()
{
column_alist_ = SCM_EOL;
}
void
-Break_align_engraver::acknowledge_grob (Grob_info inf)
+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_))
+ 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;
- SCM bp = item->get_property ("breakable");
- bool breakable = (to_boolean (bp));
- if (!breakable)
- return ;
+ if (!Item::is_non_musical (item))
+ 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);
-
- Context*origin = inf.origin_contexts (this)[0];
- left_edge_ = make_item_from_properties (dynamic_cast<Engraver*> (origin->implementation ()),
- ly_symbol2scm ("LeftEdge"),
- SCM_EOL,
- "LeftEdge");
- add_to_group (left_edge_->get_property ("break-align-symbol"),
- left_edge_);
- }
-
+ create_alignment (inf);
+
add_to_group (align_name, item);
}
}
void
-Break_align_engraver::add_to_group (SCM align_name, Item*item)
+Break_align_engraver::create_alignment (Grob_info inf)
+{
+ align_ = make_item ("BreakAlignment", SCM_EOL);
+
+ Context *origin = inf.origin_contexts (this)[0];
+
+ Translator_group *tg = origin->implementation ();
+ Engraver *random_source = dynamic_cast<Engraver *> (unsmob_translator (scm_car (tg->get_simple_trans_list ())));
+ if (!random_source)
+ random_source = this;
+
+ /*
+ 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
+Break_align_engraver::add_to_group (SCM align_name, Item *item)
{
SCM s = scm_assoc (align_name, column_alist_);
- Item * group = 0;
+ Item *group = 0;
if (s != SCM_BOOL_F)
{
- Grob *e = unsmob_grob (scm_cdr (s));
- group = dynamic_cast<Item*> (e);
+ Grob *e = unsmob_grob (scm_cdr (s));
+ group = dynamic_cast<Item *> (e);
}
else
{
- group = make_item ("BreakAlignGroup", item->self_scm () );
+ group = make_item ("BreakAlignGroup", item->self_scm ());
group->set_property ("break-align-symbol", align_name);
group->set_parent (align_, Y_AXIS);
-
+
column_alist_ = scm_assoc_set_x (column_alist_, align_name, group->self_scm ());
+ Break_alignment_interface::add_element (align_, group);
}
Axis_group_interface::add_element (group, item);
}
+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}. "
- ,
- /* creats*/ "BreakAlignment BreakAlignGroup LeftEdge",
- /* accepts */ "",
- /* acks */ "break-aligned-interface",
- /* reads */ "",
- /* 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