lily/accidental.cc

   1 #include "font-interface.hh"
   2 #include "item.hh"
   3 #include "molecule.hh"
   4 #include "accidental-interface.hh"
   5
   6 /*
   7   TODO: insert support for smaller cautionaries, tie-break-reminders.
   8   Either here or in new-accidental-engraver.
   9
  10   'accidentals should go, for a single 'accidental property -- see
  11   accidental-placement.cc
  12
  13 */
  14
  15
  16 Molecule
  17 parenthesize (Grob*me, Molecule m)
  18 {
  19   Molecule open = Font_interface::get_default_font (me)->find_by_name (String ("accidentals-leftparen"));
  20   Molecule close = Font_interface::get_default_font (me)->find_by_name (String ("accidentals-rightparen"));
  21   m.add_at_edge (X_AXIS, LEFT, Molecule (open), 0,0);
  22   m.add_at_edge (X_AXIS, RIGHT, Molecule (close), 0,0);
  23
  24   return m;
  25 }
  26
  27
  28 MAKE_SCHEME_CALLBACK (Accidental_interface,after_line_breaking,1);
  29 SCM
  30 Accidental_interface::after_line_breaking (SCM smob)
  31 {
  32   Grob *me  = unsmob_grob (smob);
  33   Grob *tie = unsmob_grob (me->get_grob_property ("tie"));
  34
  35   if (tie && !tie->original_)
  36     {
  37       me->suicide ();
  38     }
  39   return SCM_UNSPECIFIED;
  40 }
  41
  42 Array<Box>
  43 Accidental_interface::accurate_boxes (Grob *a,Grob**common)
  44 {
  45   Box b;
  46   b[X_AXIS] = a->extent (a, X_AXIS);
  47   b[Y_AXIS] = a->extent (a, Y_AXIS);
  48
  49   Array<Box> boxes;
  50
  51   bool parens = false;
  52   if (to_boolean (a->get_grob_property ("cautionary")))
  53     {
  54       SCM cstyle = a->get_grob_property ("cautionary-style");
  55       parens = gh_equal_p (cstyle, ly_symbol2scm ("parentheses"));
  56
  57     }
  58
  59   SCM accs = a->get_grob_property ("accidentals");
  60   SCM scm_style = a->get_grob_property ("style");
  61   if (!gh_symbol_p (scm_style)
  62       && !parens
  63       && scm_ilength (accs) == 1)
  64     {
  65       if (gh_scm2int (gh_car (accs)) == -1)
  66         {
  67           Box stem = b;
  68           Box bulb = b;
  69
  70           /*
  71             we could make the stem thinner, but that places the flats
  72             really close.
  73           */
  74           stem[X_AXIS][RIGHT] *= .5;
  75           bulb[Y_AXIS][UP] *= .35;
  76
  77           boxes.push (bulb);
  78           boxes.push (stem);
  79         }
  80       /*
  81         TODO: add support for natural, double flat.
  82        */
  83     }
  84
  85   if (!boxes.size())
  86     boxes.push (b);
  87
  88   Offset o (a->relative_coordinate (common[X_AXIS],  X_AXIS),
  89             a->relative_coordinate (common[Y_AXIS],  Y_AXIS));
  90   for(int i = boxes.size(); i--;)
  91     {
  92       boxes[i].translate(o);
  93     }
  94
  95   return boxes;
  96 }
  97
  98 /*
  99  * Some styles do not provide all flavours of accidentals, e.g. there
 100  * is currently no sharp accidental in vaticana style.  In these cases
 101  * this function falls back to one of the other styles.
 102  */
 103 String
 104 Accidental_interface::get_fontcharname(String style, int alteration)
 105 {
 106   if (style == "hufnagel")
 107     switch (alteration)
 108       {
 109       case -2: return "-2";
 110       case -1: return "hufnagel-1";
 111       case 0: return "vaticana0";
 112       case 1: return "mensural1";
 113       case 2: return "2";
 114       }
 115   if (style == "medicaea")
 116     switch (alteration)
 117       {
 118       case -2: return "-2";
 119       case -1: return "medicaea-1";
 120       case 0: return "vaticana0";
 121       case 1: return "mensural1";
 122       case 2: return "2";
 123       }
 124   if (style == "vaticana")
 125     switch (alteration)
 126       {
 127       case -2: return "-2";
 128       case -1: return "vaticana-1";
 129       case 0: return "vaticana0";
 130       case 1: return "mensural1";
 131       case 2: return "2";
 132       }
 133   if (style == "mensural")
 134     switch (alteration)
 135       {
 136       case -2: return "-2";
 137       case -1: return "mensural-1";
 138       case 0: return "vaticana0";
 139       case 1: return "mensural1";
 140       case 2: return "2";
 141       }
 142   if (style == "neo_mensural")
 143     style = ""; // currently same as default
 144   if (style == "default")
 145     style = "";
 146   return style + to_string (alteration);
 147 }
 148
 149 MAKE_SCHEME_CALLBACK (Accidental_interface,brew_molecule,1);
 150 SCM
 151 Accidental_interface::brew_molecule (SCM smob)
 152 {
 153   Grob *me = unsmob_grob (smob);
 154   bool smaller = false;
 155   bool parens = false;
 156
 157   bool caut  = to_boolean (me->get_grob_property ("cautionary"));
 158   if (caut)
 159     {
 160       SCM cstyle = me->get_grob_property ("cautionary-style");
 161       parens = gh_equal_p (cstyle, ly_symbol2scm ("parentheses"));
 162       smaller = gh_equal_p (cstyle, ly_symbol2scm ("smaller"));
 163     }
 164
 165   SCM scm_style = me->get_grob_property ("style");
 166   String style;
 167   if (gh_symbol_p (scm_style))
 168     {
 169       style = ly_symbol2string (scm_style);
 170     }
 171   else
 172     {
 173       /*
 174         preferably no name for the default style.
 175       */
 176       style = "";
 177     }
 178
 179   Font_metric *fm = 0;
 180   if (smaller)
 181     {
 182       SCM ac = Font_interface::font_alist_chain (me);
 183       ac = gh_cons (gh_cons (gh_cons
 184                              (ly_symbol2scm ("font-relative-size"),
 185                               scm_int2num (-1)), SCM_EOL),
 186                     ac);
 187       fm = Font_interface::get_font (me, ac);
 188     }
 189   else
 190     fm = Font_interface::get_default_font (me);
 191
 192   Molecule mol;
 193   for (SCM s = me->get_grob_property ("accidentals");
 194        gh_pair_p (s); s = gh_cdr (s))
 195     {
 196       int alteration = gh_scm2int (gh_car (s));
 197       String font_char = get_fontcharname (style, alteration);
 198       Molecule acc (fm->find_by_name ("accidentals-" + font_char));
 199
 200       if (acc.empty_b())
 201         {
 202           me->warning (_f ("accidental `%s' not found", font_char));
 203         }
 204       else
 205         {
 206           mol.add_at_edge (X_AXIS,  RIGHT, acc, 0.1,0);
 207         }
 208     }
 209
 210   if (parens)
 211     mol = parenthesize (me, mol);
 212
 213   return mol.smobbed_copy();
 214 }
 215
 216
 217
 218 ADD_INTERFACE (Accidental_interface, "accidental-interface",
 219               "a single accidental",
 220                "cautionary cautionary-style style tie accidentals");