2 paper-system.cc -- implement Paper_system
4 source file of the GNU LilyPond music typesetter
6 (c) 2004--2005 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "paper-system.hh"
12 #include "ly-smobs.icc"
14 IMPLEMENT_SMOBS (Paper_system);
15 IMPLEMENT_TYPE_P (Paper_system, "ly:paper-system?");
16 IMPLEMENT_DEFAULT_EQUAL_P (Paper_system);
18 Paper_system::Paper_system (Stencil s, SCM immutable_init)
20 mutable_property_alist_ = SCM_EOL;
21 immutable_property_alist_ = immutable_init;
24 SCM yext = get_property ("Y-extent");
26 if (is_number_pair (yext))
29 Box b = s.extent_box();
30 b[Y_AXIS] = ly_scm2interval (yext);
32 s = Stencil (b, s.expr ());
34 set_property ("stencil", s.smobbed_copy ());
37 Paper_system::~Paper_system ()
42 Paper_system::mark_smob (SCM smob)
44 Paper_system *system = (Paper_system *) SCM_CELL_WORD_1 (smob);
45 scm_gc_mark (system->mutable_property_alist_);
46 return system->immutable_property_alist_;
50 Paper_system::print_smob (SCM smob, SCM port, scm_print_state*)
52 Paper_system *p = (Paper_system *) SCM_CELL_WORD_1 (smob);
53 scm_puts ("#<", port);
54 scm_puts ("Paper_system", port);
55 scm_display (p->mutable_property_alist_, port);
56 scm_display (p->immutable_property_alist_, port);
58 scm_puts (" >\n", port);
63 Paper_system::init_vars ()
69 Paper_system::internal_get_property (SCM sym) const
74 SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
78 s = scm_sloppy_assq (sym, immutable_property_alist_);
81 return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
85 Paper_system::internal_set_property (SCM sym, SCM val)
87 mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, sym, val);