2
2
auto-change-iterator.cc -- implement Auto_change_iterator
4
4
source file of the GNU LilyPond music typesetter
6
(c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
6
(c) 1999--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
11
9
#include "context.hh"
10
#include "direction.hh"
11
#include "international.hh"
13
12
#include "music-wrapper-iterator.hh"
14
#include "direction.hh"
16
14
class Auto_change_iterator : public Music_wrapper_iterator
19
17
DECLARE_SCHEME_CALLBACK (constructor, ());
21
19
Auto_change_iterator ();
22
virtual void do_quit ();
24
23
virtual void construct_children ();
25
virtual void process (Moment);
26
Array<Pitch> pending_pitch (Moment)const;
24
virtual void process (Moment);
25
vector<Pitch> pending_pitch (Moment) const;
29
28
Direction where_dir_;
30
void change_to (Music_iterator* , SCM, String);
29
void change_to (Music_iterator *, SCM, string);
31
30
Moment start_moment_;
37
37
Auto_change_iterator::change_to (Music_iterator *it, SCM to_type_sym,
40
Context * current = it->get_outlet ();
40
Context *current = it->get_outlet ();
44
44
Cut & Paste from Change_iterator (ugh).
46
TODO: abstract this function
46
TODO: abstract this function
49
49
/* find the type of translator that we're changing.
51
If \translator Staff = bass, then look for Staff = *
51
If \translator Staff = bass, then look for Staff = *
53
53
while (current && !current->is_alias (to_type_sym))
56
current = current->daddy_context_;
59
if (current && current->id_string_ == to_id)
62
msg += _ ("Can't switch translators, I'm there already");
69
it->get_outlet ()->find_create_context (to_type_sym, to_id, SCM_EOL);
70
current->remove_context (last);
71
dest->add_context (last);
76
We could change the current translator's id, but that would make
56
current = current->get_parent_context ();
59
if (current && current->id_string () == to_id)
62
msg += _f ("can't change, already in translator: %s", to_id);
70
= it->get_outlet ()->find_create_context (to_type_sym, to_id, SCM_EOL);
71
current->remove_context (last);
72
dest->add_context (last);
77
We could change the current translator's id, but that would make
87
87
Auto_change_iterator::process (Moment m)
89
89
Music_wrapper_iterator::process (m);
91
91
Moment now = get_outlet ()->now_mom ();
92
92
Moment *splitm = 0;
94
for (; gh_pair_p (split_list_); split_list_ = gh_cdr (split_list_))
94
for (; scm_is_pair (split_list_); split_list_ = scm_cdr (split_list_))
96
splitm = unsmob_moment (gh_caar (split_list_));
96
splitm = unsmob_moment (scm_caar (split_list_));
97
97
if ((*splitm + start_moment_) > now)
100
SCM tag = gh_cdar (split_list_);
101
Direction d = to_dir (tag);
100
SCM tag = scm_cdar (split_list_);
101
Direction d = to_dir (tag);
103
103
if (d && d != where_dir_)
106
String to_id = (d >= 0) ? "up" : "down";
106
string to_id = (d >= 0) ? "up" : "down";
107
107
change_to (child_iter_,
108
108
ly_symbol2scm ("Staff"),
121
121
Auto_change_iterator::construct_children ()
123
split_list_ = get_music ()->get_property ("split-list");
124
start_moment_ = get_outlet ()->now_mom ();
126
SCM props = get_outlet ()->get_property ("trebleStaffProperties");
127
Context *up = get_outlet ()->find_create_context (ly_symbol2scm ("Staff"),
130
props = get_outlet ()->get_property ("bassStaffProperties");
131
Context *down = get_outlet ()->find_create_context (ly_symbol2scm ("Staff"),
134
up_.set_context (up);
135
down_.set_context (down);
137
Context *voice = up->find_create_context (ly_symbol2scm ("Voice"),
123
140
Music_wrapper_iterator::construct_children ();
124
split_list_ = get_music ()->get_property ("split-list");
125
start_moment_ = get_outlet ()->now_mom ();
144
Auto_change_iterator::do_quit ()
147
down_.set_context (0);
128
150
IMPLEMENT_CTOR_CALLBACK (Auto_change_iterator);