lily/percent-repeat-item.cc

   1 /*
   2   percent-repeat-item.cc -- implement Percent_repeat_item_interface
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2001--2007  Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "percent-repeat-item.hh"
  10 #include "item.hh"
  11 #include "lookup.hh"
  12 #include "font-interface.hh"
  13
  14 Stencil
  15 Percent_repeat_item_interface::brew_slash (Grob *me)
  16 {
  17   Real slope = robust_scm2double (me->get_property ("slope"), 1);
  18   Real wid = 2.0 / slope;
  19
  20   /*
  21     todo: check out if in staff-rule thickness normally.
  22   */
  23   Real thick = robust_scm2double (me->get_property ("thickness"), 1);
  24   Stencil m = Lookup::repeat_slash (wid, slope, thick);
  25   m.translate_axis (-m.extent (Y_AXIS).center (), Y_AXIS);
  26   return m;
  27 }
  28
  29 /*
  30   todo: use grob props for dot_neg_kern, slash_neg_kern?
  31 */
  32 Stencil
  33 Percent_repeat_item_interface::x_percent (Grob *me, int count,
  34                                           Real dot_neg_kern,
  35                                           Real slash_neg_kern)
  36 {
  37   Stencil m;
  38   Stencil s = brew_slash (me);
  39
  40   for (int i = count; i--;)
  41     m.add_at_edge (X_AXIS, RIGHT, s, -slash_neg_kern);
  42   Stencil d1 = Font_interface::get_default_font (me)->find_by_name ("dots.dot");
  43   Stencil d2 = d1;
  44   d1.translate_axis (0.5, Y_AXIS);
  45   d2.translate_axis (-0.5, Y_AXIS);
  46
  47   m.add_at_edge (X_AXIS, LEFT, d1, -dot_neg_kern);
  48   m.add_at_edge (X_AXIS, RIGHT, d2, -dot_neg_kern);
  49
  50   return m;
  51 }
  52
  53 MAKE_SCHEME_CALLBACK (Percent_repeat_item_interface, double_percent, 1);
  54 SCM
  55 Percent_repeat_item_interface::double_percent (SCM grob)
  56 {
  57   Grob *me = unsmob_grob (grob);
  58   Stencil m = x_percent (me, 2, 0.75, 1.6);
  59   m.translate_axis (- m.extent (X_AXIS).center (), X_AXIS);
  60   return m.smobbed_copy ();
  61 }
  62
  63 MAKE_SCHEME_CALLBACK (Percent_repeat_item_interface, beat_slash, 1);
  64 SCM
  65 Percent_repeat_item_interface::beat_slash (SCM grob)
  66 {
  67   Grob *me = unsmob_grob (grob);
  68   Stencil m = brew_slash (me);
  69
  70   return m.smobbed_copy ();
  71 }
  72
  73 ADD_INTERFACE (Percent_repeat_item_interface,
  74                "Repeats that look like percent signs.",
  75
  76                /* properties */
  77                "slope "
  78                "thickness "
  79                );
  80