2 mark-engraver.cc -- implement Mark_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
12 #include "engraver.hh"
14 #include "axis-group-interface.hh"
15 #include "bar-line.hh"
17 #include "grob-array.hh"
18 #include "international.hh"
20 #include "text-interface.hh"
24 put stuff over or next to bars. Examples: bar numbers, marginal notes,
27 class Mark_engraver : public Engraver
30 void create_items (Music *);
35 TRANSLATOR_DECLARATIONS (Mark_engraver);
38 virtual bool try_music (Music *ev);
39 void process_music ();
40 void stop_translation_timestep ();
42 DECLARE_ACKNOWLEDGER (break_aligned);
45 Mark_engraver::Mark_engraver ()
52 Mark_engraver::acknowledge_break_aligned (Grob_info inf)
54 Grob *s = inf.grob ();
56 && (get_property ("rehearsalMarkAlignSymbol")
57 == s->get_property ("break-align-symbol"))
58 && Axis_group_interface::has_interface (s))
61 RehearsalMark cannot be break-aligned, since the width of the
62 object should not be taken into alignment considerations.
64 text_->set_parent (s, X_AXIS);
69 Mark_engraver::stop_translation_timestep ()
73 text_->set_object ("side-support-elements",
74 grob_list_to_grob_array (get_property ("stavesFound")));
81 Mark_engraver::create_items (Music *ev)
86 text_ = make_item ("RehearsalMark", ev->self_scm ());
90 Mark_engraver::try_music (Music *r)
97 TODO: make the increment function in Scheme.
100 Mark_engraver::process_music ()
104 create_items (mark_ev_);
110 SCM m = mark_ev_->get_property ("label");
111 SCM proc = get_property ("markFormatter");
112 if (!Text_interface::is_markup (m)
113 && ly_is_procedure (proc))
115 if (!scm_is_number (m))
116 m = get_property ("rehearsalMark");
118 if (scm_integer_p (m) == SCM_BOOL_T
119 && scm_exact_p (m) == SCM_BOOL_T)
121 int mark_count = scm_to_int (m);
123 context ()->set_property ("rehearsalMark",
124 scm_from_int (mark_count));
127 if (scm_is_number (m))
128 m = scm_call_2 (proc, m, context ()->self_scm ());
130 /* FIXME: constant error message. */
131 warning (_ ("rehearsalMark must have integer value"));
134 if (Text_interface::is_markup (m))
135 text_->set_property ("text", m);
137 warning (_ ("mark label must be a markup object"));
141 #include "translator.icc"
143 ADD_ACKNOWLEDGER (Mark_engraver, break_aligned);
145 ADD_TRANSLATOR (Mark_engraver,
146 /* doc */ "This engraver will create RehearsalMark objects. "
147 "It puts them on top of all staves (which is taken from "
148 "the property @code{stavesFound}). If moving this engraver "
149 "to a different context, "
150 "@ref{Staff_collecting_engraver} must move along, otherwise all marks"
151 "end up on the same Y-location",
152 /* create */ "RehearsalMark",
153 /* accept */ "mark-event",
154 /* read */ "rehearsalMark rehearsalMarkAlignSymbol markFormatter stavesFound",