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 if (bt == 0 && Staff_symbol_referencer::line_count (me) > 1)
26 me->translate_axis (Staff_symbol_referencer::staff_space (me) , Y_AXIS);
29 Grob * d = unsmob_grob (me->get_grob_property ("dot"));
30 if (d && bt > 4) // UGH.
32 d->set_grob_property ("staff-position",
33 gh_int2scm ((bt == 7) ? 4 : 3));
36 return SCM_UNSPECIFIED;
40 make this function easily usable in C++
44 Rest::glyph_name (Grob * me, int balltype, String style)
48 if (balltype == 0 || balltype == 1)
50 Real rad = Staff_symbol_referencer::staff_radius (me) * 2.0;
51 Real pos = Staff_symbol_referencer::get_position (me);
54 Figure out when the rest is far enough outside the staff. This
55 could bemore generic, but hey, we understand this even after
59 ledger_b = ledger_b || (balltype == 0 && (pos >= rad +2 || pos < -rad ));
60 ledger_b = ledger_b || (balltype == 1 &&
61 (pos <= -rad -2 || pos > rad));
64 return ("rests-") + to_string (balltype)
65 + (ledger_b ? "o" : "") + style;
71 MAKE_SCHEME_CALLBACK (Rest,brew_molecule,1);
74 Rest::brew_internal_molecule (SCM smob)
76 Grob* me = unsmob_grob (smob);
78 SCM balltype_scm = me->get_grob_property ("duration-log");
79 if (!gh_number_p (balltype_scm))
80 return Molecule ().smobbed_copy ();
82 int balltype = gh_scm2int (balltype_scm);
85 SCM style_sym =me->get_grob_property ("style");
86 if (gh_symbol_p (style_sym))
88 style = ly_scm2string (scm_symbol_to_string (style_sym));
92 String idx = glyph_name (me, balltype, style);
93 Molecule res = Font_interface::get_default_font (me)->find_by_name (idx);
94 if(res.empty_b() && style!="")
97 return res.smobbed_copy();
102 Rest::brew_molecule (SCM smob)
104 return brew_internal_molecule (smob);
106 MAKE_SCHEME_CALLBACK (Rest,extent_callback,2);
108 We need the callback. The real molecule has ledgers depending on
109 Y-position. The Y-position is known only after line breaking. */
111 Rest::extent_callback (SCM smob, SCM ax)
113 Axis a = (Axis) gh_scm2int (ax);
114 SCM m = brew_internal_molecule (smob);
115 return ly_interval2scm (unsmob_molecule (m)->extent (a));
120 ADD_INTERFACE (Rest,"rest-interface",
122 "style minimum-beam-collision-distance");