2 align-elem.cc -- implement Align_elem
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "align-element.hh"
10 #include "interval.hh"
11 #include "direction.hh"
14 struct Align_element_content {
15 Score_element * elem_l_;
18 static int compare (Align_element_content const &h1,
19 Align_element_content const &h2)
21 return h1.priority_i_ - h2.priority_i_;
23 Align_element_content (Score_element *elem_l, int p)
28 Align_element_content () {
37 Align_element::add_element (Score_element*el_l)
39 int p = priority_i_arr_.size ();
40 add_element_priority (el_l, p);
44 Align_element::add_element_priority (Score_element *el, int p)
46 assert (! contains_b (el));
47 elem_l_arr_.push (el);
48 priority_i_arr_.push (p);
53 Align_element::do_substitute_dependency (Score_element*o,
57 while ((i = elem_l_arr_.find_i (o))>=0)
70 Align elements top to bottom.
71 The first element has its top at y = 0.0 afterwards
73 TODO configurable, like Horizontal_align_item
75 TODO should parametrise in direction and coordinate.
78 Align_element::do_post_processing()
81 do_side_processing ();
85 Align_element::do_pre_processing ()
88 do_side_processing ();
92 Align_element::do_side_processing ()
97 for (int i=0; i < elem_l_arr_.size(); i++)
99 Interval y = elem_l_arr_[i]->extent(axis_) ;
108 for (int i=0 ; i < elem_l_arr_.size(); i++)
110 Real dy = - stacking_dir_ * dims[i][-stacking_dir_];
112 dy += stacking_dir_ * dims[i-1][stacking_dir_];
116 dy = (dy >? threshold_interval_[SMALLER] )
117 <? threshold_interval_[BIGGER];
121 if (!i && align_dir_ == LEFT)
123 else if (align_dir_ == CENTER && elem_l_arr_[i] == center_l_)
126 where_f += stacking_dir_ * dy;
129 elem_l_arr_[i]->translate_axis (where_f, axis_);
132 if (align_dir_ == RIGHT)
136 for (int i=0 ; i < elem_l_arr_.size(); i++)
137 elem_l_arr_[i]->translate_axis (- center_f, axis_);
140 Align_element::Align_element()
142 threshold_interval_ = Interval (0, Interval::infinity ());
143 transparent_b_ = true;
145 stacking_dir_ = DOWN;
153 Align_element::contains_b (Score_element const *e) const
155 return elem_l_arr_.find_l (e);
159 IMPLEMENT_IS_TYPE_B1(Align_element, Score_element);
162 Align_element::sort_elements ()
164 Array<Align_element_content> content;
165 for (int i =0; i < elem_l_arr_.size(); i++)
166 content.push (Align_element_content (elem_l_arr_[i], priority_i_arr_[i]));
167 content.sort (Align_element_content::compare);
170 priority_i_arr_.clear();
172 for (int i =0; i < content.size(); i++)
174 elem_l_arr_.push (content[i].elem_l_);
175 priority_i_arr_.push (content[i].priority_i_);
180 Align_element::do_print () const
183 DOUT << "contains: ";
184 for (int i=0 ; i < item_l_arr_.size(); i++)
185 DOUT << item_l_arr_[i]->name () << ", ";