lib/duration.cc

   1 /*
   2   duration.cc -- implement Duration, Plet,
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
   7            Han-Wen Nienhuys <hanwen@stack.nl>
   8 */
   9
  10 #include <assert.h>
  11 #include "proto.hh"
  12 #include "plist.hh"
  13 #include "string.hh"
  14 #include "source-file.hh"
  15 #include "source.hh"
  16 #include "moment.hh"
  17 #include "duration.hh"
  18 #include "duration-convert.hh"
  19
  20 // statics Duration
  21 int Duration::division_1_i_s = 384 * 4;
  22
  23
  24 Duration::Duration()
  25 {
  26   durlog_i_ = 0;
  27   dots_i_ = 0;
  28   ticks_i_ = 0;
  29 }
  30
  31 bool
  32 Duration::duration_type_b(int t)
  33 {
  34   /*
  35     ugh. Assuming behavior of conversion funcs on broken input.
  36    */
  37   return t == Duration_convert::type2_i(Duration_convert::i2_type(t));
  38 }
  39
  40 // ugh, what's this?
  41 // i should be called "mom()", ... or at least "length_mom()"
  42 Moment
  43 Duration::length() const
  44 {
  45   return Duration_convert::dur2_mom(*this);
  46 }
  47
  48 void
  49 Duration::set_plet(int i, int t)
  50 {
  51   plet_.iso_i_ = i;
  52   plet_.type_i_ = t;
  53 }
  54
  55 void
  56 Duration::set_plet(Duration d)
  57 {
  58   plet_.iso_i_ = d.plet_.iso_i_;
  59   plet_.type_i_ = d.plet_.type_i_;
  60 }
  61
  62 void
  63 Duration::set_ticks(int ticks_i)
  64 {
  65   assert(durlog_i_ <10);
  66   assert(!dots_i_);
  67   ticks_i_ = ticks_i;
  68 }
  69
  70 String
  71 Duration::str() const
  72 {
  73   return Duration_convert::dur2_str(*this);
  74 }
  75
  76
  77 bool
  78 Duration::plet_b()
  79 {
  80   return !plet_.unit_b();
  81 }