/*
- axis-group-engraver.cc -- implement Axis_group_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--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 "axis-group-engraver.hh"
+#include "engraver.hh"
#include "axis-group-interface.hh"
+#include "hara-kiri-group-spanner.hh"
#include "pointer-group-interface.hh"
#include "context.hh"
#include "international.hh"
#include "translator.icc"
-Axis_group_engraver::Axis_group_engraver ()
+/**
+ Put stuff in a Spanner with an Axis_group_interface.
+ Use as last element of a context.
+*/
+class Axis_group_engraver : public Engraver
+{
+protected:
+ bool active_;
+ Spanner *staffline_;
+ SCM interesting_;
+ vector<Grob *> elts_;
+ void process_music ();
+ virtual void initialize ();
+ virtual void finalize ();
+ void acknowledge_grob (Grob_info);
+ void process_acknowledged ();
+ virtual Spanner *get_spanner ();
+ virtual void add_element (Grob *);
+ virtual bool must_be_last () const;
+ virtual void derived_mark () const;
+
+public:
+ TRANSLATOR_DECLARATIONS (Axis_group_engraver);
+};
+
+
+Axis_group_engraver::Axis_group_engraver (Context *c)
+ : Engraver (c)
{
- must_be_last_ = true;
staffline_ = 0;
+ interesting_ = SCM_EOL;
+ active_ = false;
+}
+
+void
+Axis_group_engraver::initialize ()
+{
+ active_ = !to_boolean (get_property ("hasAxisGroup"));
+ if (active_)
+ context ()->set_property ("hasAxisGroup", SCM_BOOL_T);
+}
+
+void
+Axis_group_engraver::derived_mark () const
+{
+ scm_gc_mark (interesting_);
+}
+
+
+bool
+Axis_group_engraver::must_be_last () const
+{
+ return true;
}
void
Axis_group_engraver::process_music ()
{
- if (!staffline_)
+ if (!staffline_ && active_)
{
staffline_ = get_spanner ();
- Grob *it = unsmob_grob (get_property ("currentCommandColumn"));
+ Grob *it = unsmob<Grob> (get_property ("currentCommandColumn"));
staffline_->set_bound (LEFT, it);
}
+ interesting_ = get_property ("keepAliveInterfaces");
}
Spanner *
{
if (staffline_)
{
- Grob *it = unsmob_grob (get_property ("currentCommandColumn"));
+ Grob *it = unsmob<Grob> (get_property ("currentCommandColumn"));
staffline_->set_bound (RIGHT, it);
Pointer_group_interface::set_ordered (staffline_, ly_symbol2scm ("elements"), false);
void
Axis_group_engraver::acknowledge_grob (Grob_info i)
{
+ if (!staffline_)
+ return;
+
elts_.push_back (i.grob ());
+
+ if (to_boolean (staffline_->get_property ("remove-empty")))
+ {
+ for (SCM s = interesting_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ if (i.grob ()->internal_has_interface (scm_car (s)))
+ {
+ Hara_kiri_group_spanner::add_interesting_item (staffline_, i.grob ());
+ break;
+ }
+ }
+ }
}
/*
for (vsize i = 0; i < elts_.size (); i++)
{
- if (!unsmob_grob (elts_[i]->get_object ("axis-group-parent-Y")))
- {
- if (staffline_->get_parent (Y_AXIS)
- && staffline_->get_parent (Y_AXIS) == elts_[i])
- {
- staffline_->warning (_ ("Axis_group_engraver: vertical group already has a parent"));
- staffline_->warning (_ ("are there two Axis_group_engravers?"));
- staffline_->warning (_ ("removing this vertical group"));
- staffline_->suicide ();
- staffline_ = 0;
- break;
- }
- add_element (elts_[i]);
- }
+ if (!unsmob<Grob> (elts_[i]->get_object ("axis-group-parent-Y")))
+ {
+ if (staffline_->get_parent (Y_AXIS)
+ && staffline_->get_parent (Y_AXIS) == elts_[i])
+ {
+ staffline_->warning (_ ("Axis_group_engraver: vertical group already has a parent"));
+ staffline_->warning (_ ("are there two Axis_group_engravers?"));
+ staffline_->warning (_ ("removing this vertical group"));
+ staffline_->suicide ();
+ staffline_ = 0;
+ break;
+ }
+ add_element (elts_[i]);
+ }
}
elts_.clear ();
}
Axis_group_interface::add_element (staffline_, e);
}
-ADD_ACKNOWLEDGER (Axis_group_engraver, grob);
-ADD_TRANSLATOR (Axis_group_engraver,
- /* doc */
- "Group all objects created in this context in a"
- " @code{VerticalAxisGroup} spanner.",
-
- /* create */
- "VerticalAxisGroup ",
-
- /* read */
- "currentCommandColumn ",
+void
+Axis_group_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Axis_group_engraver, grob);
+}
- /* write */
- ""
- );
+ADD_TRANSLATOR (Axis_group_engraver,
+ /* doc */
+ "Group all objects created in this context in a"
+ " @code{VerticalAxisGroup} spanner.",
+
+ /* create */
+ "VerticalAxisGroup ",
+
+ /* read */
+ "currentCommandColumn "
+ "keepAliveInterfaces "
+ "hasAxisGroup ",
+
+ /* write */
+ "hasAxisGroup "
+ );
projects / lilypond.git / blobdiff