lily/book.cc

   1 /*
   2   book.cc -- implement Book
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "book.hh"
  10
  11 #include <cstdio>
  12 using namespace std;
  13
  14 #include "main.hh"
  15 #include "music.hh"
  16 #include "output-def.hh"
  17 #include "paper-book.hh"
  18 #include "score.hh"
  19 #include "text-interface.hh"
  20 #include "warn.hh"
  21 #include "performance.hh"
  22 #include "paper-score.hh"
  23 #include "page-marker.hh"
  24
  25 #include "ly-smobs.icc"
  26
  27 Book::Book ()
  28 {
  29   paper_ = 0;
  30   header_ = SCM_EOL;
  31   scores_ = SCM_EOL;
  32   bookparts_ = SCM_EOL;
  33   input_location_ = SCM_EOL;
  34   smobify_self ();
  35
  36   input_location_ = make_input (Input ());
  37 }
  38
  39 Book::Book (Book const &s)
  40 {
  41   paper_ = 0;
  42   header_ = SCM_EOL;
  43   scores_ = SCM_EOL;
  44   bookparts_ = SCM_EOL;
  45   input_location_ = SCM_EOL;
  46   smobify_self ();
  47
  48   if (s.paper_)
  49     {
  50       paper_ = s.paper_->clone ();
  51       paper_->unprotect ();
  52     }
  53
  54   input_location_ = make_input (*s.origin ());
  55
  56   header_ = ly_make_anonymous_module (false);
  57   if (ly_is_module (s.header_))
  58     ly_module_copy (header_, s.header_);
  59
  60   SCM *t = &scores_;
  61   for (SCM p = s.scores_; scm_is_pair (p); p = scm_cdr (p))
  62     {
  63       Score *newscore = unsmob_score (scm_car (p))->clone ();
  64
  65       *t = scm_cons (newscore->self_scm (), SCM_EOL);
  66       t = SCM_CDRLOC (*t);
  67       newscore->unprotect ();
  68     }
  69
  70   t = &bookparts_;
  71   for (SCM p = s.bookparts_; scm_is_pair (p); p = scm_cdr (p))
  72     {
  73       Book *newpart = unsmob_book (scm_car (p))->clone ();
  74
  75       *t = scm_cons (newpart->self_scm (), SCM_EOL);
  76       t = SCM_CDRLOC (*t);
  77       newpart->unprotect ();
  78     }
  79 }
  80
  81 Input *
  82 Book::origin () const
  83 {
  84   return unsmob_input (input_location_);
  85 }
  86
  87 Book::~Book ()
  88 {
  89 }
  90
  91 IMPLEMENT_SMOBS (Book);
  92 IMPLEMENT_DEFAULT_EQUAL_P (Book);
  93
  94 SCM
  95 Book::mark_smob (SCM s)
  96 {
  97   Book *book = (Book *) SCM_CELL_WORD_1 (s);
  98
  99   if (book->paper_)
 100     scm_gc_mark (book->paper_->self_scm ());
 101   scm_gc_mark (book->scores_);
 102   scm_gc_mark (book->bookparts_);
 103   scm_gc_mark (book->input_location_);
 104
 105   return book->header_;
 106 }
 107
 108 int
 109 Book::print_smob (SCM, SCM p, scm_print_state*)
 110 {
 111   scm_puts ("#<Book>", p);
 112   return 1;
 113 }
 114
 115 void
 116 Book::add_score (SCM s)
 117 {
 118   scores_ = scm_cons (s, scores_);
 119 }
 120
 121 void
 122 Book::set_parent (Book *parent)
 123 {
 124   if (!paper_)
 125     {
 126       paper_ = new Output_def ();
 127       paper_->unprotect ();
 128     }
 129   paper_->parent_ = parent->paper_;
 130   /* If this part is the first child of parent, copy its header */
 131   if (ly_is_module (parent->header_) && (scm_is_null (parent->bookparts_)))
 132     {
 133       SCM tmp_header = ly_make_anonymous_module (false);
 134       ly_module_copy (tmp_header, parent->header_);
 135       if (ly_is_module (header_))
 136         ly_module_copy (tmp_header, header_);
 137       header_ = tmp_header;
 138     }
 139 }
 140
 141 /* Before an explicit \bookpart is encountered, scores are added to the book.
 142  * But once a bookpart is added, the previous scores shall be collected into
 143  * a new bookpart.
 144  */
 145 void
 146 Book::add_scores_to_bookpart ()
 147 {
 148   if (scm_is_pair (scores_))
 149     {
 150       /* If scores have been added to this book, add them to a child
 151        * book part */
 152       Book *part = new Book;
 153       part->set_parent (this);
 154       part->scores_ = scores_;
 155       bookparts_ = scm_cons (part->self_scm (), bookparts_);
 156       part->unprotect ();
 157       scores_ = SCM_EOL;
 158     }
 159 }
 160
 161 void
 162 Book::add_bookpart (SCM b)
 163 {
 164   add_scores_to_bookpart ();
 165   Book *part = unsmob_book (b);
 166   part->set_parent (this);
 167   bookparts_ = scm_cons (b, bookparts_);
 168 }
 169
 170 bool
 171 Book::error_found ()
 172 {
 173   for (SCM s = scores_; scm_is_pair (s); s = scm_cdr (s))
 174     if (Score *score = unsmob_score (scm_car (s)))
 175       if (score->error_found_)
 176         return true;
 177
 178   for (SCM part = bookparts_; scm_is_pair (part); part = scm_cdr (part))
 179     if (Book *bookpart = unsmob_book (scm_car (part)))
 180       if (bookpart->error_found ())
 181         return true;
 182
 183   return false;
 184 }
 185
 186 Paper_book *
 187 Book::process (Output_def *default_paper,
 188                Output_def *default_layout)
 189 {
 190   return process (default_paper, default_layout, 0);
 191 }
 192
 193 void
 194 Book::process_bookparts (Paper_book *output_paper_book, Output_def *paper, Output_def *layout)
 195 {
 196   add_scores_to_bookpart ();
 197   for (SCM p = scm_reverse (bookparts_); scm_is_pair (p); p = scm_cdr (p))
 198     {
 199       if (Book *book = unsmob_book (scm_car (p)))
 200         {
 201           Paper_book *paper_book_part = book->process (paper, layout, output_paper_book);
 202           if (paper_book_part)
 203             {
 204               output_paper_book->add_bookpart (paper_book_part->self_scm ());
 205               paper_book_part->unprotect ();
 206             }
 207         }
 208     }
 209   /* In a Paper_book, bookparts are stored in straight order */
 210   output_paper_book->bookparts_ = scm_reverse_x (output_paper_book->bookparts_, SCM_EOL);
 211 }
 212
 213 void
 214 Book::process_score (SCM s, Paper_book *output_paper_book, Output_def *layout)
 215 {
 216   if (Score *score = unsmob_score (scm_car (s)))
 217     {
 218       SCM outputs = score
 219         ->book_rendering (output_paper_book->paper_, layout);
 220
 221       while (scm_is_pair (outputs))
 222         {
 223           Music_output *output = unsmob_music_output (scm_car (outputs));
 224
 225           if (Performance *perf = dynamic_cast<Performance *> (output))
 226             output_paper_book->add_performance (perf->self_scm ());
 227           else if (Paper_score *pscore = dynamic_cast<Paper_score *> (output))
 228             {
 229               if (ly_is_module (score->get_header ()))
 230                 output_paper_book->add_score (score->get_header ());
 231               output_paper_book->add_score (pscore->self_scm ());
 232             }
 233
 234           outputs = scm_cdr (outputs);
 235         }
 236     }
 237   else if (Text_interface::is_markup_list (scm_car (s))
 238            || unsmob_page_marker (scm_car (s)))
 239     output_paper_book->add_score (scm_car (s));
 240   else
 241     assert (0);
 242
 243 }
 244
 245 /* Concatenate all score or book part outputs into a Paper_book
 246  */
 247 Paper_book *
 248 Book::process (Output_def *default_paper,
 249                Output_def *default_layout,
 250                Paper_book *parent_part)
 251 {
 252   Output_def *paper = paper_ ? paper_ : default_paper;
 253
 254   /* If top book, recursively check score errors */
 255   if (!parent_part && error_found ())
 256     return 0;
 257
 258   if (!paper)
 259     return 0;
 260
 261   Paper_book *paper_book = new Paper_book ();
 262   Real scale = scm_to_double (paper->c_variable ("output-scale"));
 263   Output_def *scaled_bookdef = scale_output_def (paper, scale);
 264   paper_book->paper_ = scaled_bookdef;
 265   if (parent_part)
 266     {
 267       paper_book->parent_ = parent_part;
 268       paper_book->paper_->parent_ = parent_part->paper_;
 269     }
 270   paper_book->header_ = header_;
 271   scaled_bookdef->unprotect ();
 272
 273   if (scm_is_pair (bookparts_))
 274     {
 275       /* Process children book parts */
 276       process_bookparts (paper_book, paper, default_layout);
 277     }
 278   else
 279     {
 280       /* Process scores */
 281   /* Render in order of parsing.  */
 282       for (SCM s = scm_reverse (scores_); scm_is_pair (s); s = scm_cdr (s))
 283         {
 284           process_score (s, paper_book, default_layout);
 285         }
 286     }
 287
 288   return paper_book;
 289 }