lily/percent-repeat-item.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2001--2010  Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "percent-repeat-item.hh"
  21 #include "item.hh"
  22 #include "lookup.hh"
  23 #include "font-interface.hh"
  24
  25 Stencil
  26 Percent_repeat_item_interface::brew_slash (Grob *me)
  27 {
  28   Real slope = robust_scm2double (me->get_property ("slope"), 1);
  29   Real wid = 2.0 / slope;
  30
  31   /*
  32     todo: check out if in staff-rule thickness normally.
  33   */
  34   Real thick = robust_scm2double (me->get_property ("thickness"), 1);
  35   Stencil m = Lookup::repeat_slash (wid, slope, thick);
  36   m.translate_axis (-m.extent (Y_AXIS).center (), Y_AXIS);
  37   return m;
  38 }
  39
  40 Stencil
  41 Percent_repeat_item_interface::x_percent (Grob *me, int count)
  42 {
  43   Stencil m;
  44   Stencil s = brew_slash (me);
  45
  46   Real dot_neg_kern =
  47     robust_scm2double (me->get_property ("dot-negative-kern"), 0.75);
  48   Real slash_neg_kern =
  49     robust_scm2double (me->get_property ("slash-negative-kern"), 1.6);
  50
  51   for (int i = count; i--;)
  52     m.add_at_edge (X_AXIS, RIGHT, s, -slash_neg_kern);
  53   Stencil d1 = Font_interface::get_default_font (me)->find_by_name ("dots.dot");
  54   Stencil d2 = d1;
  55   d1.translate_axis (0.5, Y_AXIS);
  56   d2.translate_axis (-0.5, Y_AXIS);
  57
  58   m.add_at_edge (X_AXIS, LEFT, d1, -dot_neg_kern);
  59   m.add_at_edge (X_AXIS, RIGHT, d2, -dot_neg_kern);
  60
  61   m.translate_axis (- m.extent (X_AXIS).center (), X_AXIS);
  62   return m;
  63 }
  64
  65 MAKE_SCHEME_CALLBACK (Percent_repeat_item_interface, double_percent, 1);
  66 SCM
  67 Percent_repeat_item_interface::double_percent (SCM grob)
  68 {
  69   Grob *me = unsmob_grob (grob);
  70   Stencil m = x_percent (me, 2);
  71   return m.smobbed_copy ();
  72 }
  73
  74 MAKE_SCHEME_CALLBACK (Percent_repeat_item_interface, beat_slash, 1);
  75 SCM
  76 Percent_repeat_item_interface::beat_slash (SCM grob)
  77 {
  78   Grob *me = unsmob_grob (grob);
  79   Stencil m = brew_slash (me);
  80
  81   return m.smobbed_copy ();
  82 }
  83
  84 ADD_INTERFACE (Percent_repeat_item_interface,
  85                "Repeats that look like percent signs.",
  86
  87                /* properties */
  88                "dot-negative-kern "
  89                "slash-negative-kern "
  90                "slope "
  91                "thickness "
  92                );
  93