2 mark-engraver.cc -- implement Mark_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "bar-line.hh"
13 #include "engraver-group-engraver.hh"
16 #include "text-interface.hh"
19 put stuff over or next to bars. Examples: bar numbers, marginal notes,
22 class Mark_engraver : public Engraver
25 TRANSLATOR_DECLARATIONS (Mark_engraver);
29 void stop_translation_timestep ();
30 DECLARE_ACKNOWLEDGER(bar_line);
31 void create_items (Music *);
32 virtual bool try_music (Music *ev);
33 void process_music ();
39 Mark_engraver::Mark_engraver ()
46 Mark_engraver::acknowledge_bar_line (Grob_info inf)
48 Grob *s = inf.grob ();
52 TODO: make this configurable. RehearsalMark cannot be
53 break-aligned, since the width of the object should not be taken
54 into alignment considerations.
56 text_->set_parent (s, X_AXIS);
61 Mark_engraver::stop_translation_timestep ()
65 SCM lst = get_property ("stavesFound");
66 text_->set_object ("side-support-elements", lst);
73 Mark_engraver::create_items (Music *ev)
78 text_ = make_item ("RehearsalMark", ev->self_scm ());
82 Mark_engraver::try_music (Music *r)
89 TODO: make the increment function in Scheme.
92 Mark_engraver::process_music ()
96 create_items (mark_ev_);
102 SCM m = mark_ev_->get_property ("label");
103 SCM proc = get_property ("markFormatter");
104 if (!Text_interface::markup_p (m)
105 && ly_is_procedure (proc))
107 if (!scm_is_number (m))
108 m = get_property ("rehearsalMark");
110 if (scm_integer_p (m) == SCM_BOOL_T
111 && scm_exact_p (m) == SCM_BOOL_T)
113 int mark_count = scm_to_int (m);
115 context ()->set_property ("rehearsalMark",
116 scm_int2num (mark_count));
119 if (scm_is_number (m))
120 m = scm_call_2 (proc, m, context ()->self_scm ());
122 /* FIXME: constant error message. */
123 warning (_ ("rehearsalMark must have integer value"));
126 if (Text_interface::markup_p (m))
127 text_->set_property ("text", m);
129 warning (_ ("mark label must be a markup object"));
133 #include "translator.icc"
135 ADD_ACKNOWLEDGER(Mark_engraver,bar_line);
136 ADD_TRANSLATOR (Mark_engraver,
137 /* descr */ "This engraver will create RehearsalMark objects. "
138 "It puts them on top of all staves (which is taken from "
139 "the property @code{stavesFound}). If moving this engraver "
140 "to a different context, "
141 "@ref{Staff_collecting_engraver} must move along, otherwise all marks"
142 "end up on the same Y-location",
143 /* creats*/ "RehearsalMark",
144 /* accepts */ "mark-event",
145 /* reads */ "rehearsalMark markFormatter stavesFound",