lily/score-scheme.cc

   1 /*
   2   score-scheme.cc -- implement Score bindings.
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "score.hh"
  10
  11 #include "music.hh"
  12 #include "output-def.hh"
  13 #include "global-context.hh"
  14 #include "music-output.hh"
  15 #include "paper-score.hh"
  16 #include "paper-book.hh"
  17
  18 LY_DEFINE (ly_make_score, "ly:make-score",
  19            1, 0, 0,
  20            (SCM music),
  21            "Return score with @var{music} encapsulated in @var{score}.")
  22 {
  23   LY_ASSERT_SMOB (Music, music, 1);
  24
  25   Score *score = new Score;
  26   score->set_music (music);
  27
  28   return score->unprotect ();
  29 }
  30
  31 LY_DEFINE (ly_score_output_defs, "ly:score-output-defs",
  32            1, 0, 0, (SCM score),
  33            "All output definitions in a score.")
  34 {
  35   LY_ASSERT_SMOB (Score, score, 1);
  36   Score *sc = unsmob_score (score);
  37
  38   SCM l = SCM_EOL;
  39   for (vsize i = 0; i < sc->defs_.size (); i++)
  40     l = scm_cons (sc->defs_[i]->self_scm (), l);
  41   return scm_reverse_x (l, SCM_EOL);
  42 }
  43
  44 LY_DEFINE (ly_score_add_output_def_x, "ly:score-add-output-def!",
  45            2, 0, 0, (SCM score, SCM def),
  46            "Add an output definition @var{def} to @var{score}.")
  47 {
  48   LY_ASSERT_SMOB (Score, score, 1);
  49   LY_ASSERT_SMOB (Output_def, def, 2);
  50   Score *sc = unsmob_score (score);
  51   Output_def *output_def = unsmob_output_def (def);
  52   sc->add_output_def (output_def);
  53   return SCM_UNSPECIFIED;
  54 }
  55
  56 LY_DEFINE (ly_score_header, "ly:score-header",
  57            1, 0, 0, (SCM score),
  58            "Return score header.")
  59 {
  60   LY_ASSERT_SMOB (Score, score, 1);
  61   Score *sc = unsmob_score (score);
  62   return sc->get_header ();
  63 }
  64
  65
  66 LY_DEFINE (ly_score_set_header_x, "ly:score-set-header!",
  67            2, 0, 0, (SCM score, SCM module),
  68            "Set the score header.")
  69 {
  70   LY_ASSERT_SMOB (Score, score, 1);
  71   SCM_ASSERT_TYPE (ly_is_module (module), module, SCM_ARG2, __FUNCTION__,
  72                    "module");
  73
  74   Score *sc = unsmob_score (score);
  75   sc->set_header (module);
  76   return SCM_UNSPECIFIED;
  77 }
  78
  79
  80 LY_DEFINE (ly_score_music, "ly:score-music",
  81            1, 0, 0, (SCM score),
  82            "Return score music.")
  83 {
  84   LY_ASSERT_SMOB (Score, score, 1);
  85   Score *sc = unsmob_score (score);
  86   return sc->get_music ();
  87 }
  88
  89 LY_DEFINE (ly_score_error_p, "ly:score-error?",
  90            1, 0, 0, (SCM score),
  91            "Was there an error in the score?")
  92 {
  93   LY_ASSERT_SMOB (Score, score, 1);
  94   Score *sc = unsmob_score (score);
  95   return scm_from_bool (sc->error_found_);
  96 }
  97
  98 LY_DEFINE (ly_score_embedded_format, "ly:score-embedded-format",
  99            2, 0, 0, (SCM score, SCM layout),
 100            "Run @var{score} through @var{layout} (an output definition)"
 101            " scaled to correct output-scale already, returning a list of"
 102            " layout-lines.  This function takes an optional"
 103            " @code{Object_key} argument.")
 104 {
 105   LY_ASSERT_SMOB (Score, score, 1);
 106   LY_ASSERT_SMOB (Output_def, layout, 2);
 107
 108   Score *sc = unsmob_score (score);
 109   Output_def *od = unsmob_output_def (layout);
 110
 111   if (sc->error_found_)
 112     return SCM_EOL;
 113
 114   Output_def *score_def = 0;
 115
 116   /* UGR, FIXME, these are default \layout blocks once again.  They
 117      suck. */
 118   for (vsize i = 0; !score_def && i < sc->defs_.size (); i++)
 119     if (sc->defs_[i]->c_variable ("is-layout") == SCM_BOOL_T)
 120       score_def = sc->defs_[i];
 121
 122   if (!score_def)
 123     return SCM_BOOL_F;
 124
 125   score_def = score_def->clone ();
 126   SCM prot = score_def->unprotect ();
 127
 128   /* TODO: SCORE_DEF should be scaled according to OD->parent_ or OD
 129      itself. */
 130   score_def->parent_ = od;
 131
 132   SCM context = ly_run_translator (sc->get_music (), score_def->self_scm ());
 133   SCM output = ly_format_output (context);
 134
 135   scm_remember_upto_here_1 (prot);
 136   return output;
 137 }