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release: 0.0.39-1
[lilypond.git] / lily / staff-walker.cc
1 /*
2   staff-walker.cc -- implement Staff_walker
3
4   source file of the LilyPond music typesetter
5
6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
7 */
8
9 #include "proto.hh"
10 #include "plist.hh"
11 #include "grouping.hh"
12 #include "staff.hh"
13 #include "musicalrequest.hh"
14 #include "staff-walker.hh"
15 #include "staff-column.hh"
16 #include "score-column.hh"
17 #include "debug.hh"
18 #include "time-description.hh"
19 #include "commandrequest.hh"
20 #include "grouping.hh"
21 #include "score-walker.hh"
22
23 Staff_walker::~Staff_walker()
24 {
25     do_pre_move();
26 }
27
28 Staff_walker::Staff_walker(Staff_walker const &s)
29     :PCursor<Staff_column*> (s)
30 {
31     assert(false);
32 }
33
34 Staff_walker::Staff_walker(Staff * s, PScore*ps )
35     : PCursor<Staff_column*> (s->cols_)
36 {
37     staff_l_ = s;
38     pscore_l_ = ps;
39     
40     // should be in tdes. TODO
41     default_grouping = new Rhythmic_grouping(MInterval(0, 1), 4); 
42     score_walk_l_ = 0;
43 }
44
45 Moment
46 Staff_walker::when() const
47 {
48     return ptr()->when();
49 }
50
51
52 void
53 Staff_walker::process_timing_reqs()
54 {
55     for (int i=0; i < ptr()->timing_req_l_arr_.size(); i++) {
56         Timing_req * tr_l = ptr()->timing_req_l_arr_[i];
57         if (tr_l->meterchange()) {
58             int b_i=tr_l->meterchange()->beats_i_;
59             int o_i = tr_l->meterchange()->one_beat_i_;
60             time_.set_meter(b_i, o_i);
61                         
62             *default_grouping = Rhythmic_grouping(
63                 MInterval(0,Moment(b_i, o_i)), b_i);
64         } 
65     }
66     
67     for (int i=0; i < ptr()->timing_req_l_arr_.size(); i++) {
68         Timing_req * tr_l = ptr()->timing_req_l_arr_[i];
69         if (tr_l->partial()) {
70             time_.setpartial(tr_l->partial()->duration_);
71         } else if (tr_l->barcheck() && time_.whole_in_measure_) {
72             warning( "Barcheck failed", tr_l->defined_ch_c_l_ );
73         } else if (tr_l->cadenza()) {
74             time_.set_cadenza(tr_l->cadenza()->on_b_);
75         } else if (tr_l->measuregrouping()) {
76             *default_grouping = parse_grouping(
77                 tr_l->measuregrouping()->beat_i_arr_,
78                 tr_l->measuregrouping()->elt_length_arr_);
79         }
80     }
81     time_.OK();
82 }
83
84 void
85 Staff_walker::operator++(int i)
86 {
87     Moment last = when();
88
89     do_pre_move();
90     PCursor<Staff_column*>::operator++(i);
91     if (ok() ) {
92         Moment delta_t = when() - last;
93         assert(delta_t >Moment(0));
94         time_.add( delta_t );
95     }
96     do_post_move();
97 }
98
99 void
100 Staff_walker::process()
101 {
102     process_timing_reqs();    
103     process_requests();
104 }
105
106 void 
107 Staff_walker::allow_break()
108 {
109     score_walk_l_->allow_break(this);
110 }
111