2 paper-book.cc -- implement Paper_book
4 source file of the GNU LilyPond music typesetter
6 (c) 2004 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "ly-module.hh"
12 #include "paper-book.hh"
13 #include "paper-def.hh"
14 #include "paper-outputter.hh"
15 #include "paper-line.hh"
16 #include "paper-score.hh"
22 stencil2line (Stencil stil, bool is_title = false)
26 z = scm_permanent_object (ly_offset2scm (Offset (0, 0)));
27 Offset dim = Offset (stil.extent (X_AXIS).length (),
28 stil.extent (Y_AXIS).length ());
29 Paper_line *pl = new Paper_line (dim, scm_cons (stil.smobbed_copy (),
31 -10001 * is_title, is_title);
33 return scm_gc_unprotect_object (pl->self_scm ());
37 Paper_book::Paper_book ()
45 Paper_book::~Paper_book ()
49 #include "ly-smobs.icc"
51 IMPLEMENT_DEFAULT_EQUAL_P (Paper_book);
52 IMPLEMENT_SMOBS (Paper_book)
53 IMPLEMENT_TYPE_P (Paper_book, "ly:paper-book?")
56 Paper_book::mark_smob (SCM smob)
58 Paper_book *b = (Paper_book*) SCM_CELL_WORD_1 (smob);
59 for (int i = 0; i < b->score_lines_.size (); i++)
60 b->score_lines_[i].gc_mark ();
62 scm_gc_mark (b->copyright_);
67 Paper_book::print_smob (SCM smob, SCM port, scm_print_state*)
69 Paper_book *b = (Paper_book*) ly_cdr (smob);
71 scm_puts ("#<", port);
72 scm_puts (classname (b), port);
74 //scm_puts (b->, port);
80 Paper_book::output (String outname)
82 if (!score_lines_.size ())
83 // FIXME: no end-output?
86 /* Generate all stencils to trigger font loads. */
87 SCM pages = this->pages ();
89 Paper_def *paper = score_lines_[0].paper_;
90 Paper_outputter *out = paper->get_paper_outputter (outname);
91 int page_count = scm_ilength (pages);
92 out->output_header (paper->bookpaper_, scopes (0), page_count, false);
94 for (SCM s = pages; s != SCM_EOL; s = ly_cdr (s))
96 Page *p = unsmob_page (ly_car (s));
97 progress_indication ("[" + to_string (p->number_));
98 out->output_page (p, ly_cdr (s) == SCM_EOL);
99 progress_indication ("]");
102 out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
103 progress_indication ("\n");
107 Paper_book::scopes (int i)
109 return score_lines_[i].scopes ();
114 Paper_book::title (int i)
117 TODO: get from book-paper definition.
119 SCM user_title = ly_scheme_function ("user-title");
120 SCM book_title = ly_scheme_function ("book-title");
121 SCM score_title = ly_scheme_function ("score-title");
122 SCM field = (i == 0 ? ly_symbol2scm ("bookTitle")
123 : ly_symbol2scm ("scoreTitle"));
126 SCM scopes = this->scopes (i);
127 SCM s = ly_modules_lookup (scopes, field);
128 if (s != SCM_UNDEFINED && scm_variable_bound_p (s) == SCM_BOOL_T)
129 title = *unsmob_stencil (scm_call_2 (user_title,
130 score_lines_[0].paper_->self_scm (),
131 scm_variable_ref (s)));
133 title = *unsmob_stencil (scm_call_2 (i == 0 ? book_title : score_title,
134 score_lines_[0].paper_->self_scm (),
136 if (!title.is_empty ())
137 title.align_to (Y_AXIS, UP);
143 Paper_book::classic_output (String outname)
145 int count = score_lines_.size ();
146 Paper_def * p = score_lines_.top ().paper_;
147 Paper_outputter *out = p->get_paper_outputter (outname);
148 out->output_header (p->bookpaper_, scopes (count - 1), 0, true);
150 SCM top_lines = score_lines_.top ().lines_;
151 Paper_line *first = unsmob_paper_line (scm_vector_ref (top_lines,
153 Offset o (0, -0.5 * first->dim ()[Y_AXIS]);
154 int line_count = SCM_VECTOR_LENGTH (top_lines);
155 for (int i = 0; i < line_count; i++)
157 /* In classic compatibility TeX tracks how large things are, and
158 advances the Y pos for us. If we advance it too, we get too
161 FIXME: vague... why is TeX is different from other ouput
162 backends, why not fix the TeX backend? -- jcn */
163 if (output_format_global == "tex")
166 out->output_line (scm_vector_ref (top_lines, scm_int2num (i)),
167 &o, i == line_count - 1);
170 out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
171 progress_indication ("\n");
174 /* calculate book height, #lines, stencils. */
178 int score_count = score_lines_.size ();
180 /* Calculate the full book height. Hmm, can't we cache system
181 heights while making stencils? */
183 for (int i = 0; i < score_count; i++)
185 Stencil title = this->title (i);
186 if (!title.is_empty ())
187 height_ += title.extent (Y_AXIS).length ();
189 int line_count = SCM_VECTOR_LENGTH (score_lines_[i].lines_);
190 for (int j = 0; j < line_count; j++)
192 SCM s = scm_vector_ref ((SCM) score_lines_[i].lines_, scm_int2num (j));
193 height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
197 Paper_def *paper = score_lines_[0].paper_;
198 SCM scopes = this->scopes (0);
200 SCM make_tagline = paper->c_variable ("make-tagline");
201 tagline_ = scm_call_2 (make_tagline, paper->self_scm (), scopes);
203 if (Stencil *s = unsmob_stencil (tagline_))
204 tag_height = s->extent (Y_AXIS).length ();
205 height_ += tag_height;
207 SCM make_copyright = paper->c_variable ("make-copyright");
208 copyright_ = scm_call_2 (make_copyright, paper->self_scm (), scopes);
209 Real copy_height = 0;
210 if (Stencil *s = unsmob_stencil (copyright_))
211 copy_height = s->extent (Y_AXIS).length ();
212 height_ += copy_height;
218 int score_count = score_lines_.size ();
220 for (int i = 0; i < score_count; i++)
222 Stencil title = this->title (i);
223 if (!title.is_empty ())
224 lines = ly_snoc (stencil2line (title, true), lines);
225 lines = scm_append (scm_list_2 (lines, scm_vector_to_list (score_lines_[i].lines_)));
230 for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
231 unsmob_paper_line (ly_car (s))->number_ = ++i;
239 Page::page_count_ = 0;
240 Paper_def *paper = score_lines_[0].paper_;
241 Page *page = new Page (paper, 1);
243 Real text_height = page->text_height ();
245 Real copy_height = 0;
246 if (Stencil *s = unsmob_stencil (copyright_))
247 copy_height = s->extent (Y_AXIS).length ();
250 if (Stencil *s = unsmob_stencil (tagline_))
251 tag_height = s->extent (Y_AXIS).length ();
254 SCM proc = paper->c_variable ("page-breaking");
255 SCM breaks = scm_apply_0 (proc, scm_list_n (all, scm_make_real (height_),
256 scm_make_real (text_height),
257 scm_make_real (-copy_height),
258 scm_make_real (-tag_height),
261 /* Copyright on first page. */
262 if (unsmob_stencil (copyright_))
263 page->copyright_ = copyright_;
266 int page_count = SCM_VECTOR_LENGTH ((SCM) breaks);
268 for (int i = 0; i < page_count; i++)
271 page = new Page (paper, i + 1);
273 int next = i + 1 < page_count
274 ? ly_scm2int (scm_vector_ref (breaks, scm_int2num (i))) : 0;
275 while ((!next && all != SCM_EOL) || line <= next)
277 SCM s = ly_car (all);
278 page->lines_ = ly_snoc (s, page->lines_);
279 page->height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
284 pages = scm_cons (page->self_scm (), pages);
287 /* Tagline on last page. */
288 if (unsmob_stencil (tagline_))
289 page->tagline_ = tagline_;
291 return scm_reverse (pages);
295 c_ragged_page_breaks (SCM lines, Real book_height, Real text_height,
296 Real first, Real last)
299 int page_count = int (book_height / text_height + 0.5);
300 SCM breaks = SCM_EOL;
301 Real page_height = text_height + first;
304 for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
306 Paper_line *pl = unsmob_paper_line (ly_car (s));
307 if (!pl->is_title () && h < page_height)
309 h += pl->dim ()[Y_AXIS];
310 if (!pl->is_title () && h > page_height)
312 breaks = ly_snoc (scm_int2num (number), breaks);
314 page_height = text_height + (page_number == page_count) * last;
317 if (ly_cdr (s) == SCM_EOL)
318 breaks = ly_snoc (scm_int2num (pl->number_), breaks);
321 return scm_vector (breaks);
324 LY_DEFINE (ly_ragged_page_breaks, "ly:ragged-page-breaks",
325 5, 0, 0, (SCM lines, SCM book, SCM text, SCM first, SCM last),
326 "Return a vector with line numbers of page breaks.")
328 SCM_ASSERT_TYPE (scm_pair_p (lines), lines, SCM_ARG1, __FUNCTION__, "list");
329 SCM_ASSERT_TYPE (ly_c_number_p (book), book, SCM_ARG2, __FUNCTION__, "real");
330 SCM_ASSERT_TYPE (ly_c_number_p (text), text, SCM_ARG2, __FUNCTION__, "real");
331 SCM_ASSERT_TYPE (ly_c_number_p (first), first, SCM_ARG2, __FUNCTION__, "real");
332 SCM_ASSERT_TYPE (ly_c_number_p (last), last, SCM_ARG2, __FUNCTION__, "real");
334 return c_ragged_page_breaks (lines,
335 ly_scm2double (book), ly_scm2double (text),
336 ly_scm2double (first), ly_scm2double (last));
339 /****************************************************************/
341 Score_lines::Score_lines ()
344 global_header_ = SCM_EOL;
350 Score_lines::gc_mark ()
352 scm_gc_mark (lines_);
353 scm_gc_mark (global_header_);
354 scm_gc_mark (header_);
356 scm_gc_mark (paper_->self_scm ());
361 Score_lines::scopes ()
363 SCM scopes = SCM_EOL;
365 scopes = scm_cons (header_, scopes);
366 if (SCM_MODULEP(global_header_)
367 && global_header_ != header_)
368 scopes = scm_cons (global_header_, scopes);