2 g-staff-side.cc -- implement G_staff_side_item
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "g-staff-side.hh"
11 #include "staff-symbol.hh"
14 #include "dimensions.hh"
16 G_staff_side_item::G_staff_side_item ()
20 set_elt_property (transparent_scm_sym, SCM_BOOL_T);
21 staff_support_b_ = true;
28 G_staff_side_item::do_pre_processing ()
31 dir_ = get_default_direction ();
38 G_staff_side_item::get_default_direction () const
45 G_staff_side_item::set_victim (Score_element *e)
49 to_position_l_->dim_cache_[axis_]->parent_l_ = dim_cache_[axis_];
53 G_staff_side_item::add_support (Score_element*e)
56 support_l_arr_.push (e);
61 G_staff_side_item::do_substitute_element_pointer (Score_element*o, Score_element*n)
63 Staff_symbol_referencer::do_substitute_element_pointer (o,n);
64 if (o == to_position_l_)
67 support_l_arr_.unordered_substitute (o,n);
71 G_staff_side_item::position_self ()
74 to_position_l_->get_elt_property (transparent_scm_sym) != SCM_BOOL_F)
78 Dimension_cache *common = 0;
79 if (support_l_arr_.size ())
81 common = common_group (typecast_array (support_l_arr_, (Graphical_element*)0),
84 for (int i=0; i < support_l_arr_.size (); i++)
86 Score_element * e = support_l_arr_ [i];
87 Real coord = e->relative_coordinate (common, axis_);
88 dim.unite (coord + e->extent (axis_));
92 common = dim_cache_[axis_]->parent_l_;
102 ? to_position_l_->extent (axis_)
105 Real off = dim_cache_[axis_]->relative_coordinate (common);
107 SCM pad = remove_elt_property (padding_scm_sym);
108 if (pad != SCM_BOOL_F)
110 off += gh_scm2double (SCM_CDR(pad)) * dir_;
112 Real total_off = dim[dir_] - sym_dim[-dir_] + off;
113 dim_cache_[axis_]->set_offset (total_off);
114 if (fabs (total_off) > 100 CM)
115 programming_error ("Huh ? Improbable staff side dim.");
119 G_staff_side_item::do_post_processing ()
127 G_staff_side_item::do_add_processing ()
130 && axis_ == Y_AXIS && staff_symbol_l ())
132 add_support (staff_symbol_l ());
137 G_staff_side_item::do_height () const
141 return to_position_l_->extent (Y_AXIS);
146 G_staff_side_item::do_width () const
150 return to_position_l_->extent (X_AXIS);
154 G_staff_side_item::do_print () const
158 DOUT << "positioning " << to_position_l_->name();
160 DOUT << "axis == " << axis_name_str (axis_)
161 << ", dir == " << to_str (dir_ );