2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1999--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "engraver.hh"
22 #include "axis-group-interface.hh"
23 #include "hara-kiri-group-spanner.hh"
24 #include "pointer-group-interface.hh"
26 #include "international.hh"
30 #include "translator.icc"
33 Put stuff in a Spanner with an Axis_group_interface.
34 Use as last element of a context.
36 class Axis_group_engraver : public Engraver
42 void process_music ();
43 virtual void finalize ();
44 DECLARE_ACKNOWLEDGER (grob);
45 void process_acknowledged ();
46 virtual Spanner *get_spanner ();
47 virtual void add_element (Grob *);
48 virtual bool must_be_last () const;
49 virtual void derived_mark () const;
52 TRANSLATOR_DECLARATIONS (Axis_group_engraver);
56 Axis_group_engraver::Axis_group_engraver ()
59 interesting_ = SCM_EOL;
63 Axis_group_engraver::derived_mark () const
65 scm_gc_mark (interesting_);
70 Axis_group_engraver::must_be_last () const
76 Axis_group_engraver::process_music ()
80 staffline_ = get_spanner ();
81 Grob *it = unsmob_grob (get_property ("currentCommandColumn"));
82 staffline_->set_bound (LEFT, it);
84 interesting_ = get_property ("keepAliveInterfaces");
88 Axis_group_engraver::get_spanner ()
90 return make_spanner ("VerticalAxisGroup", SCM_EOL);
94 Axis_group_engraver::finalize ()
98 Grob *it = unsmob_grob (get_property ("currentCommandColumn"));
99 staffline_->set_bound (RIGHT, it);
101 Pointer_group_interface::set_ordered (staffline_, ly_symbol2scm ("elements"), false);
106 Axis_group_engraver::acknowledge_grob (Grob_info i)
110 if (i.grob ()->name () == "VerticalAxisGroup") {
111 i.grob ()->programming_error ("duplicate axis group");
112 if (staffline_->is_live ())
113 staffline_->suicide ();
118 elts_.push_back (i.grob ());
120 if (staffline_ && to_boolean(staffline_->get_property("remove-empty")))
122 for (SCM s = interesting_; scm_is_pair (s); s = scm_cdr (s))
124 if (i.grob ()->internal_has_interface (scm_car (s)))
125 Hara_kiri_group_spanner::add_interesting_item (staffline_, i.grob ());
131 maybe should check if our parent is set, because we now get a
132 cyclic parent relationship if we have two Axis_group_engravers in
135 Axis_group_engraver::process_acknowledged ()
140 for (vsize i = 0; i < elts_.size (); i++)
142 if (!unsmob_grob (elts_[i]->get_object ("axis-group-parent-Y")))
144 if (staffline_->get_parent (Y_AXIS)
145 && staffline_->get_parent (Y_AXIS) == elts_[i])
147 staffline_->warning (_ ("Axis_group_engraver: vertical group already has a parent"));
148 staffline_->warning (_ ("are there two Axis_group_engravers?"));
149 staffline_->warning (_ ("removing this vertical group"));
150 staffline_->suicide ();
154 add_element (elts_[i]);
161 Axis_group_engraver::add_element (Grob *e)
163 Axis_group_interface::add_element (staffline_, e);
166 ADD_ACKNOWLEDGER (Axis_group_engraver, grob);
168 ADD_TRANSLATOR (Axis_group_engraver,
170 "Group all objects created in this context in a"
171 " @code{VerticalAxisGroup} spanner.",
174 "VerticalAxisGroup ",
177 "currentCommandColumn "
178 "keepAliveInterfaces ",