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 "output-def.hh"
14 #include "paper-outputter.hh"
15 #include "paper-line.hh"
16 #include "paper-score.hh"
19 #include "book-paper-def.hh"
23 stencil2line (Stencil stil, bool is_title = false)
27 z = scm_permanent_object (ly_offset2scm (Offset (0, 0)));
28 Offset dim = Offset (stil.extent (X_AXIS).length (),
29 stil.extent (Y_AXIS).length ());
30 Paper_line *pl = new Paper_line (dim, scm_cons (stil.smobbed_copy (),
32 -10001 * is_title, is_title);
34 return scm_gc_unprotect_object (pl->self_scm ());
38 Paper_book::Paper_book ()
46 Paper_book::~Paper_book ()
50 #include "ly-smobs.icc"
52 IMPLEMENT_DEFAULT_EQUAL_P (Paper_book);
53 IMPLEMENT_SMOBS (Paper_book)
54 IMPLEMENT_TYPE_P (Paper_book, "ly:paper-book?")
57 Paper_book::mark_smob (SCM smob)
59 Paper_book *b = (Paper_book*) SCM_CELL_WORD_1 (smob);
60 for (int i = 0; i < b->score_lines_.size (); i++)
61 b->score_lines_[i].gc_mark ();
63 scm_gc_mark (b->copyright_);
65 scm_gc_mark (b->bookpaper_->self_scm ());
71 Paper_book::print_smob (SCM smob, SCM port, scm_print_state*)
73 Paper_book *b = (Paper_book*) ly_cdr (smob);
75 scm_puts ("#<", port);
76 scm_puts (classname (b), port);
78 //scm_puts (b->, port);
84 Paper_book::output (String outname)
86 if (!score_lines_.size ())
87 // FIXME: no end-output?
90 /* Generate all stencils to trigger font loads. */
91 SCM pages = this->pages ();
93 Output_def *paper = score_lines_[0].paper_;
94 Paper_outputter *out = get_paper_outputter (outname);
95 int page_count = scm_ilength (pages);
97 out->output_header (paper->parent_, scopes (0), page_count, false);
99 for (SCM s = pages; s != SCM_EOL; s = ly_cdr (s))
101 Page *p = unsmob_page (ly_car (s));
102 progress_indication ("[" + to_string (p->number_));
103 out->output_page (p, ly_cdr (s) == SCM_EOL);
104 progress_indication ("]");
107 out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
108 progress_indication ("\n");
112 Paper_book::scopes (int i)
114 return score_lines_[i].scopes ();
119 Paper_book::title (int i)
121 SCM user_title = bookpaper_->lookup_variable (ly_symbol2scm ("user-title"));
122 SCM book_title = bookpaper_->lookup_variable (ly_symbol2scm ("book-title"));
123 SCM score_title = bookpaper_->lookup_variable (ly_symbol2scm ("score-title"));
124 SCM field = (i == 0 ? ly_symbol2scm ("bookTitle")
125 : ly_symbol2scm ("scoreTitle"));
128 SCM scopes = this->scopes (i);
129 SCM s = ly_modules_lookup (scopes, field);
130 if (s != SCM_UNDEFINED && scm_variable_bound_p (s) == SCM_BOOL_T)
131 title = *unsmob_stencil (scm_call_2 (user_title,
132 score_lines_[0].paper_->self_scm (),
133 scm_variable_ref (s)));
135 title = *unsmob_stencil (scm_call_2 (i == 0 ? book_title : score_title,
136 score_lines_[0].paper_->self_scm (),
138 if (!title.is_empty ())
139 title.align_to (Y_AXIS, UP);
145 Paper_book::classic_output (String outname)
147 int count = score_lines_.size ();
148 Paper_outputter *out = get_paper_outputter (outname);
150 Output_def * p = score_lines_.top ().paper_;
151 while (p && p->parent_)
154 out->output_header (p, scopes (count - 1), 0, true);
156 SCM top_lines = score_lines_.top ().lines_;
157 Paper_line *first = unsmob_paper_line (scm_vector_ref (top_lines,
159 Offset o (0, -0.5 * first->dim ()[Y_AXIS]);
160 int line_count = SCM_VECTOR_LENGTH (top_lines);
161 for (int i = 0; i < line_count; i++)
163 /* In classic compatibility TeX tracks how large things are, and
164 advances the Y pos for us. If we advance it too, we get too
167 FIXME: vague... why is TeX is different from other ouput
168 backends, why not fix the TeX backend? -- jcn */
169 if (output_format_global == "tex")
172 out->output_line (scm_vector_ref (top_lines, scm_int2num (i)),
173 &o, i == line_count - 1);
176 out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
177 progress_indication ("\n");
180 /* calculate book height, #lines, stencils. */
184 int score_count = score_lines_.size ();
186 /* Calculate the full book height. Hmm, can't we cache system
187 heights while making stencils? */
189 for (int i = 0; i < score_count; i++)
191 Stencil title = this->title (i);
192 if (!title.is_empty ())
193 height_ += title.extent (Y_AXIS).length ();
195 int line_count = SCM_VECTOR_LENGTH (score_lines_[i].lines_);
196 for (int j = 0; j < line_count; j++)
198 SCM s = scm_vector_ref ((SCM) score_lines_[i].lines_, scm_int2num (j));
199 height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
203 Output_def *paper = score_lines_[0].paper_;
204 SCM scopes = this->scopes (0);
206 SCM make_tagline = paper->c_variable ("make-tagline");
207 tagline_ = scm_call_2 (make_tagline, paper->self_scm (), scopes);
209 if (Stencil *s = unsmob_stencil (tagline_))
210 tag_height = s->extent (Y_AXIS).length ();
211 height_ += tag_height;
213 SCM make_copyright = paper->c_variable ("make-copyright");
214 copyright_ = scm_call_2 (make_copyright, paper->self_scm (), scopes);
215 Real copy_height = 0;
216 if (Stencil *s = unsmob_stencil (copyright_))
217 copy_height = s->extent (Y_AXIS).length ();
218 height_ += copy_height;
224 int score_count = score_lines_.size ();
226 for (int i = 0; i < score_count; i++)
228 Stencil title = this->title (i);
229 if (!title.is_empty ())
230 lines = ly_snoc (stencil2line (title, true), lines);
231 lines = scm_append (scm_list_2 (lines, scm_vector_to_list (score_lines_[i].lines_)));
236 for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
237 unsmob_paper_line (ly_car (s))->number_ = ++i;
245 Page::page_count_ = 0;
246 Output_def *paper = score_lines_[0].paper_;
247 Page *page = new Page (paper, 1);
249 Real text_height = page->text_height ();
251 Real copy_height = 0;
252 if (Stencil *s = unsmob_stencil (copyright_))
253 copy_height = s->extent (Y_AXIS).length ();
256 if (Stencil *s = unsmob_stencil (tagline_))
257 tag_height = s->extent (Y_AXIS).length ();
260 SCM proc = paper->c_variable ("page-breaking");
261 SCM breaks = scm_apply_0 (proc, scm_list_n (all, scm_make_real (height_),
262 scm_make_real (text_height),
263 scm_make_real (-copy_height),
264 scm_make_real (-tag_height),
267 /* Copyright on first page. */
268 if (unsmob_stencil (copyright_))
269 page->copyright_ = copyright_;
272 int page_count = SCM_VECTOR_LENGTH ((SCM) breaks);
274 for (int i = 0; i < page_count; i++)
277 page = new Page (paper, i + 1);
279 int next = i + 1 < page_count
280 ? ly_scm2int (scm_vector_ref (breaks, scm_int2num (i))) : 0;
281 while ((!next && all != SCM_EOL) || line <= next)
283 SCM s = ly_car (all);
284 page->lines_ = ly_snoc (s, page->lines_);
285 page->height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
290 pages = scm_cons (page->self_scm (), pages);
293 /* Tagline on last page. */
294 if (unsmob_stencil (tagline_))
295 page->tagline_ = tagline_;
297 return scm_reverse (pages);
301 c_ragged_page_breaks (SCM lines, Real book_height, Real text_height,
302 Real first, Real last)
305 int page_count = int (book_height / text_height + 0.5);
306 SCM breaks = SCM_EOL;
307 Real page_height = text_height + first;
310 for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
312 Paper_line *pl = unsmob_paper_line (ly_car (s));
313 if (!pl->is_title () && h < page_height)
315 h += pl->dim ()[Y_AXIS];
316 if (!pl->is_title () && h > page_height)
318 breaks = ly_snoc (scm_int2num (number), breaks);
320 page_height = text_height + (page_number == page_count) * last;
323 if (ly_cdr (s) == SCM_EOL)
324 breaks = ly_snoc (scm_int2num (pl->number_), breaks);
327 return scm_vector (breaks);
330 LY_DEFINE (ly_ragged_page_breaks, "ly:ragged-page-breaks",
331 5, 0, 0, (SCM lines, SCM book, SCM text, SCM first, SCM last),
332 "Return a vector with line numbers of page breaks.")
334 SCM_ASSERT_TYPE (scm_pair_p (lines), lines, SCM_ARG1, __FUNCTION__, "list");
335 SCM_ASSERT_TYPE (ly_c_number_p (book), book, SCM_ARG2, __FUNCTION__, "real");
336 SCM_ASSERT_TYPE (ly_c_number_p (text), text, SCM_ARG2, __FUNCTION__, "real");
337 SCM_ASSERT_TYPE (ly_c_number_p (first), first, SCM_ARG2, __FUNCTION__, "real");
338 SCM_ASSERT_TYPE (ly_c_number_p (last), last, SCM_ARG2, __FUNCTION__, "real");
340 return c_ragged_page_breaks (lines,
341 ly_scm2double (book), ly_scm2double (text),
342 ly_scm2double (first), ly_scm2double (last));
345 /****************************************************************/
347 Score_lines::Score_lines ()
350 global_header_ = SCM_EOL;
356 Score_lines::gc_mark ()
358 scm_gc_mark (lines_);
359 scm_gc_mark (global_header_);
360 scm_gc_mark (header_);
362 scm_gc_mark (paper_->self_scm ());
367 Score_lines::scopes ()
369 SCM scopes = SCM_EOL;
371 scopes = scm_cons (header_, scopes);
372 if (SCM_MODULEP(global_header_)
373 && global_header_ != header_)
374 scopes = scm_cons (global_header_, scopes);