2 rest.cc -- implement Rest
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "paper-def.hh"
11 #include "font-interface.hh"
14 #include "paper-score.hh"
15 #include "staff-symbol-referencer.hh"
18 MAKE_SCHEME_CALLBACK (Rest,after_line_breaking,1);
20 Rest::after_line_breaking (SCM smob)
22 Grob *me = unsmob_grob (smob);
23 int bt = gh_scm2int (me->get_grob_property ("duration-log"));
24 int lc = Staff_symbol_referencer::line_count (me);
25 Real ss = Staff_symbol_referencer::staff_space (me);
28 if (bt == 0 && lc > 1)
30 me->translate_axis (ss , Y_AXIS);
35 me->translate_axis (ss/2 , Y_AXIS);
38 Grob * d = unsmob_grob (me->get_grob_property ("dot"));
39 if (d && bt > 4) // UGH.
41 d->set_grob_property ("staff-position",
42 gh_int2scm ((bt == 7) ? 4 : 3));
45 return SCM_UNSPECIFIED;
49 make this function easily usable in C++
53 Rest::glyph_name (Grob * me, int balltype, String style)
57 if (balltype == 0 || balltype == 1)
59 Real rad = Staff_symbol_referencer::staff_radius (me) * 2.0;
60 Real pos = Staff_symbol_referencer::get_position (me);
63 Figure out when the rest is far enough outside the staff. This
64 could bemore generic, but hey, we understand this even after
68 ledger_b = ledger_b || (balltype == 0 && (pos >= rad +2 || pos < -rad ));
69 ledger_b = ledger_b || (balltype == 1 &&
70 (pos <= -rad -2 || pos > rad));
73 return ("rests-") + to_string (balltype)
74 + (ledger_b ? "o" : "") + style;
80 MAKE_SCHEME_CALLBACK (Rest,brew_molecule,1);
83 Rest::brew_internal_molecule (SCM smob)
85 Grob* me = unsmob_grob (smob);
87 SCM balltype_scm = me->get_grob_property ("duration-log");
88 if (!gh_number_p (balltype_scm))
89 return Molecule ().smobbed_copy ();
91 int balltype = gh_scm2int (balltype_scm);
94 SCM style_sym =me->get_grob_property ("style");
95 if (gh_symbol_p (style_sym))
97 style = ly_scm2string (scm_symbol_to_string (style_sym));
101 String idx = glyph_name (me, balltype, style);
102 Molecule res = Font_interface::get_default_font (me)->find_by_name (idx);
103 if(res.empty_b() && style!="")
106 return res.smobbed_copy();
111 Rest::brew_molecule (SCM smob)
113 return brew_internal_molecule (smob);
115 MAKE_SCHEME_CALLBACK (Rest,extent_callback,2);
117 We need the callback. The real molecule has ledgers depending on
118 Y-position. The Y-position is known only after line breaking. */
120 Rest::extent_callback (SCM smob, SCM ax)
122 Axis a = (Axis) gh_scm2int (ax);
123 SCM m = brew_internal_molecule (smob);
124 return ly_interval2scm (unsmob_molecule (m)->extent (a));
129 ADD_INTERFACE (Rest,"rest-interface",
131 "style minimum-beam-collision-distance");