lily/tuplet-number.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2005--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6
   7   LilyPond is free software: you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation, either version 3 of the License, or
  10   (at your option) any later version.
  11
  12   LilyPond is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "tuplet-bracket.hh"
  22 #include "moment.hh"
  23 #include "paper-column.hh"
  24 #include "text-interface.hh"
  25 #include "spanner.hh"
  26 #include "lookup.hh"
  27
  28 struct Tuplet_number
  29 {
  30   DECLARE_SCHEME_CALLBACK (print, (SCM));
  31   DECLARE_SCHEME_CALLBACK (calc_cross_staff, (SCM));
  32   DECLARE_GROB_INTERFACE ();
  33 };
  34
  35
  36 MAKE_SCHEME_CALLBACK (Tuplet_number, print, 1);
  37 SCM
  38 Tuplet_number::print (SCM smob)
  39 {
  40   Spanner *me = unsmob_spanner (smob);
  41   Spanner *tuplet = unsmob_spanner (me->get_object ("bracket"));
  42
  43   if (!tuplet || !tuplet->is_live ())
  44     {
  45       me->suicide ();
  46       return SCM_EOL;
  47     }
  48
  49   SCM stc_scm = Text_interface::print (smob);
  50   Stencil *stc = unsmob_stencil (stc_scm);
  51
  52   stc->align_to (X_AXIS, CENTER);
  53   stc->align_to (Y_AXIS, CENTER);
  54
  55   SCM cpoints =  tuplet->get_property ("control-points");
  56   Drul_array<Offset> points;
  57   if (scm_is_pair (cpoints))
  58     {
  59       points[LEFT] = ly_scm2offset (scm_car (cpoints));
  60       points[RIGHT] = ly_scm2offset (scm_cadr (cpoints));
  61     }
  62   else
  63     {
  64       programming_error ("wrong type for control-points");
  65     }
  66   stc->translate ((points[RIGHT] + points[LEFT]) / 2);
  67
  68   return stc_scm;
  69 }
  70
  71 MAKE_SCHEME_CALLBACK (Tuplet_number, calc_cross_staff, 1)
  72 SCM
  73 Tuplet_number::calc_cross_staff (SCM smob)
  74 {
  75   Grob *me = unsmob_grob (smob);
  76   return unsmob_grob (me->get_object ("bracket"))->get_property ("cross-staff");
  77 }
  78
  79 ADD_INTERFACE (Tuplet_number,
  80                "The number for a bracket.",
  81
  82                /* properties */
  83                "avoid-slur "    // UGH.
  84                "bracket "
  85                );
  86