lily/font-metric.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1999--2011 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 "font-metric.hh"
  21
  22 #include <cmath>
  23 #include <cctype>
  24 using namespace std;
  25
  26 #include "dimensions.hh"
  27 #include "modified-font-metric.hh"
  28 #include "open-type-font.hh"
  29 #include "stencil.hh"
  30 #include "warn.hh"
  31
  32 #include "ly-smobs.icc"
  33
  34 Real
  35 Font_metric::design_size () const
  36 {
  37   return 1.0 * point_constant;
  38 }
  39
  40 Stencil
  41 Font_metric::find_by_name (string s) const
  42 {
  43   replace_all (&s, '-', 'M');
  44   int idx = name_to_index (s);
  45   Box b;
  46
  47   SCM expr = SCM_EOL;
  48   if (idx >= 0)
  49     {
  50       expr = scm_list_3 (ly_symbol2scm ("named-glyph"),
  51                          self_scm (),
  52                          ly_string2scm (s));
  53       b = get_indexed_char_dimensions (idx);
  54     }
  55
  56   Stencil q (b, expr);
  57   return q;
  58 }
  59
  60 Font_metric::Font_metric ()
  61 {
  62   description_ = SCM_EOL;
  63   self_scm_ = SCM_EOL;
  64   smobify_self ();
  65 }
  66
  67 Font_metric::Font_metric (Font_metric const &)
  68 {
  69 }
  70
  71 Font_metric::~Font_metric ()
  72 {
  73 }
  74
  75 size_t
  76 Font_metric::count () const
  77 {
  78   return 0;
  79 }
  80
  81 Box
  82 Font_metric::get_indexed_char_dimensions (size_t) const
  83 {
  84   return Box (Interval (0, 0), Interval (0, 0));
  85 }
  86
  87 size_t
  88 Font_metric::name_to_index (string) const
  89 {
  90   return (size_t)-1;
  91 }
  92
  93 Offset
  94 Font_metric::get_indexed_wxwy (size_t) const
  95 {
  96   return Offset (0, 0);
  97 }
  98
  99 void
 100 Font_metric::derived_mark () const
 101 {
 102 }
 103
 104 SCM
 105 Font_metric::mark_smob (SCM s)
 106 {
 107   Font_metric *m = (Font_metric *) SCM_CELL_WORD_1 (s);
 108   m->derived_mark ();
 109   return m->description_;
 110 }
 111
 112 int
 113 Font_metric::print_smob (SCM s, SCM port, scm_print_state *)
 114 {
 115   Font_metric *m = unsmob_metrics (s);
 116   scm_puts ("#<", port);
 117   scm_puts (m->class_name (), port);
 118   scm_puts (" ", port);
 119   scm_write (m->description_, port);
 120   scm_puts (">", port);
 121   return 1;
 122 }
 123
 124 IMPLEMENT_SMOBS (Font_metric);
 125 IMPLEMENT_DEFAULT_EQUAL_P (Font_metric);
 126 IMPLEMENT_TYPE_P (Font_metric, "ly:font-metric?");
 127
 128 SCM
 129 Font_metric::font_file_name () const
 130 {
 131   return scm_car (description_);
 132 }
 133
 134 string
 135 Font_metric::font_name () const
 136 {
 137   string s ("unknown");
 138   return s;
 139 }
 140
 141 size_t
 142 Font_metric::index_to_charcode (size_t i) const
 143 {
 144   return i;
 145 }
 146
 147 Offset
 148 Font_metric::attachment_point (string) const
 149 {
 150   return Offset (0, 0);
 151 }
 152
 153 SCM
 154 Font_metric::sub_fonts () const
 155 {
 156   return SCM_EOL;
 157 }
 158
 159 Stencil
 160 Font_metric::text_stencil (Output_def *state,
 161                            string, bool) const
 162 {
 163   (void) state;
 164
 165   programming_error ("Cannot get a text stencil from this font");
 166   return Stencil (Box (), SCM_EOL);
 167 }