2 molecule.cc -- implement Molecule
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include <libc-extension.hh>
12 #include "font-metric.hh"
13 #include "dimensions.hh"
14 #include "interval.hh"
16 #include "molecule.hh"
18 #include "killing-cons.tcc"
20 #include "ly-smobs.icc"
24 Molecule::smobbed_copy () const
26 Molecule * m = new Molecule(*this);
28 return m->smobbed_self ();
32 Molecule::extent(Axis a) const
37 Molecule::Molecule (Box b, SCM func)
50 Molecule::translate (Offset o)
56 || isinf (o[a]) || isnan (o[a]))
58 programming_error ("Improbable offset for translation: setting to zero");
64 expr_ = gh_list (ly_symbol2scm ("translate-molecule"),
66 expr_, SCM_UNDEFINED);
73 Molecule::translate_axis (Real x,Axis a)
83 Molecule::add_molecule (Molecule const &m)
85 expr_ = gh_list (ly_symbol2scm ("combine-molecule"),
87 expr_, SCM_UNDEFINED);
92 Molecule::set_empty (bool e)
96 dim_[X_AXIS].set_empty ();
97 dim_[Y_AXIS].set_empty ();
101 dim_[X_AXIS] = Interval(0,0);
102 dim_[Y_AXIS] = Interval (0,0);
108 Molecule::align_to (Axis a, Direction d)
110 Interval i (extent (a));
111 Real r = (d == CENTER) ? i.center () : i[d];
112 translate_axis (-r, a);
116 Molecule::add_at_edge (Axis a, Direction d, Molecule const &m, Real padding)
118 Real my_extent= empty_b () ? 0.0 : dim_[a][d];
119 Interval i (m.extent (a));
123 programming_error ("Molecule::add_at_edge: adding empty molecule.");
129 Real offset = my_extent - his_extent;
131 toadd.translate_axis (offset + d * padding, a);
132 add_molecule (toadd);
136 Molecule::empty_b () const
138 return expr_ == SCM_EOL;
142 fontify_atom(Font_metric * met, SCM f)
147 return gh_list (ly_symbol2scm ("fontify"),
148 ly_quote_scm (met->description_), f, SCM_UNDEFINED);
152 Molecule::get_expr () const
160 Molecule::extent_box () const
164 IMPLEMENT_SIMPLE_SMOBS(Molecule);
168 Molecule::print_smob (SCM s, SCM port, scm_print_state *)
170 Molecule *r = (Molecule *) gh_cdr (s);
172 scm_puts ("#<Molecule ", port);
173 /* String str(r->str());
174 scm_puts ((char *)str.ch_C(), port);*/
175 scm_puts (" >", port);
182 Molecule::mark_smob (SCM s)
184 Molecule *r = (Molecule *) gh_cdr (s);
189 IMPLEMENT_TYPE_P(Molecule, "molecule?");
190 IMPLEMENT_DEFAULT_EQUAL_P(Molecule);
191 IMPLEMENT_UNSMOB(Molecule, molecule);