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"
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 ()
48 Paper_book::~Paper_book ()
52 #include "ly-smobs.icc"
54 IMPLEMENT_DEFAULT_EQUAL_P (Paper_book);
55 IMPLEMENT_SMOBS (Paper_book)
56 IMPLEMENT_TYPE_P (Paper_book, "ly:paper-book?")
59 Paper_book::mark_smob (SCM smob)
61 Paper_book *b = (Paper_book*) SCM_CELL_WORD_1 (smob);
62 for (int i = 0; i < b->score_lines_.size (); i++)
63 b->score_lines_[i].gc_mark ();
65 scm_gc_mark (b->copyright_);
67 scm_gc_mark (b->bookpaper_->self_scm ());
68 scm_gc_mark (b->header_);
73 Paper_book::print_smob (SCM smob, SCM port, scm_print_state*)
75 Paper_book *b = (Paper_book*) ly_cdr (smob);
77 scm_puts ("#<", port);
78 scm_puts (classname (b), port);
80 //scm_puts (b->, port);
87 TODO: there is too much code dup, and the interface is not
91 Paper_book::output (String outname)
93 if (!score_lines_.size ())
94 // FIXME: no end-output?
97 /* Generate all stencils to trigger font loads. */
98 SCM pages = this->pages ();
100 Paper_outputter *out = get_paper_outputter (outname);
101 int page_count = scm_ilength (pages);
103 SCM scopes = SCM_EOL;
104 if (ly_c_module_p (header_))
105 scopes = scm_cons (header_, scopes);
107 out->output_header (bookpaper_, scopes, page_count, false);
109 for (SCM s = pages; s != SCM_EOL; s = ly_cdr (s))
111 Page *p = unsmob_page (ly_car (s));
112 progress_indication ("[" + to_string (p->number_));
113 out->output_page (p, ly_cdr (s) == SCM_EOL);
114 progress_indication ("]");
117 out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
118 progress_indication ("\n");
123 Paper_book::title (int i)
125 SCM user_title = bookpaper_->lookup_variable (ly_symbol2scm ("user-title"));
126 SCM book_title = bookpaper_->lookup_variable (ly_symbol2scm ("book-title"));
127 SCM score_title = bookpaper_->lookup_variable (ly_symbol2scm ("score-title"));
128 SCM field = (i == 0 ? ly_symbol2scm ("bookTitle")
129 : ly_symbol2scm ("scoreTitle"));
134 SCM scopes = SCM_EOL;
135 if (ly_c_module_p (header_))
136 scopes = scm_cons (header_, scopes);
138 if (ly_c_module_p (score_lines_[i].header_))
139 scopes = scm_cons (score_lines_[i].header_, scopes);
142 SCM s = ly_modules_lookup (scopes, field, SCM_BOOL_F);
144 title = *unsmob_stencil (scm_call_2 (user_title,
145 bookpaper_->self_scm (),
148 title = *unsmob_stencil (scm_call_2 (i == 0 ? book_title : score_title,
149 bookpaper_->self_scm (),
151 if (!title.is_empty ())
152 title.align_to (Y_AXIS, UP);
158 Paper_book::classic_output (String outname)
160 Paper_outputter *out = get_paper_outputter (outname);
162 Output_def * p = bookpaper_;
163 while (p && p->parent_)
167 SCM scopes = SCM_EOL;
168 if (ly_c_module_p (header_))
169 scopes = scm_cons (header_, scopes);
171 if (ly_c_module_p (score_lines_[0].header_))
172 scopes = scm_cons (score_lines_[0].header_, scopes);
175 out->output_header (p, scopes, 0, true);
177 SCM top_lines = score_lines_.top ().lines_;
178 Paper_line *first = unsmob_paper_line (scm_vector_ref (top_lines,
180 Offset o (0, -0.5 * first->dim ()[Y_AXIS]);
181 int line_count = SCM_VECTOR_LENGTH (top_lines);
182 for (int i = 0; i < line_count; i++)
184 /* In classic compatibility TeX tracks how large things are, and
185 advances the Y pos for us. If we advance it too, we get too
188 FIXME: vague... why is TeX is different from other ouput
189 backends, why not fix the TeX backend? -- jcn */
190 if (output_format_global == "tex")
193 out->output_line (scm_vector_ref (top_lines, scm_int2num (i)),
194 &o, i == line_count - 1);
197 out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
198 progress_indication ("\n");
201 /* calculate book height, #lines, stencils. */
205 int score_count = score_lines_.size ();
207 /* Calculate the full book height. Hmm, can't we cache system
208 heights while making stencils? */
210 for (int i = 0; i < score_count; i++)
212 Stencil title = this->title (i);
213 if (!title.is_empty ())
214 height_ += title.extent (Y_AXIS).length ();
216 int line_count = SCM_VECTOR_LENGTH (score_lines_[i].lines_);
217 for (int j = 0; j < line_count; j++)
219 SCM s = scm_vector_ref ((SCM) score_lines_[i].lines_, scm_int2num (j));
220 height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
224 Output_def *paper = bookpaper_;
226 SCM scopes = SCM_EOL;
227 if (ly_c_module_p (header_))
228 scopes = scm_cons (header_, scopes);
230 SCM make_tagline = paper->c_variable ("make-tagline");
231 tagline_ = scm_call_2 (make_tagline, paper->self_scm (), scopes);
233 if (Stencil *s = unsmob_stencil (tagline_))
234 tag_height = s->extent (Y_AXIS).length ();
235 height_ += tag_height;
237 SCM make_copyright = paper->c_variable ("make-copyright");
238 copyright_ = scm_call_2 (make_copyright, paper->self_scm (), scopes);
239 Real copy_height = 0;
240 if (Stencil *s = unsmob_stencil (copyright_))
241 copy_height = s->extent (Y_AXIS).length ();
242 height_ += copy_height;
248 int score_count = score_lines_.size ();
250 for (int i = 0; i < score_count; i++)
252 Stencil title = this->title (i);
253 if (!title.is_empty ())
254 lines = ly_snoc (stencil2line (title, true), lines);
255 lines = scm_append (scm_list_2 (lines, scm_vector_to_list (score_lines_[i].lines_)));
260 for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
261 unsmob_paper_line (ly_car (s))->number_ = ++i;
269 Page::page_count_ = 0;
271 Output_def *paper = bookpaper_;
272 Page *page = new Page (paper, 1);
274 Real text_height = page->text_height ();
276 Real copy_height = 0;
277 if (Stencil *s = unsmob_stencil (copyright_))
278 copy_height = s->extent (Y_AXIS).length ();
281 if (Stencil *s = unsmob_stencil (tagline_))
282 tag_height = s->extent (Y_AXIS).length ();
285 SCM proc = paper->c_variable ("page-breaking");
286 SCM breaks = scm_apply_0 (proc, scm_list_n (all, scm_make_real (height_),
287 scm_make_real (text_height),
288 scm_make_real (-copy_height),
289 scm_make_real (-tag_height),
292 /* Copyright on first page. */
293 if (unsmob_stencil (copyright_))
294 page->copyright_ = copyright_;
297 int page_count = SCM_VECTOR_LENGTH ((SCM) breaks);
299 for (int i = 0; i < page_count; i++)
302 page = new Page (paper, i + 1);
304 int next = i + 1 < page_count
305 ? ly_scm2int (scm_vector_ref (breaks, scm_int2num (i))) : 0;
306 while ((!next && all != SCM_EOL) || line <= next)
308 SCM s = ly_car (all);
309 page->lines_ = ly_snoc (s, page->lines_);
310 page->height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
315 pages = scm_cons (page->self_scm (), pages);
318 /* Tagline on last page. */
319 if (unsmob_stencil (tagline_))
320 page->tagline_ = tagline_;
322 return scm_reverse (pages);
326 c_ragged_page_breaks (SCM lines, Real book_height, Real text_height,
327 Real first, Real last)
330 int page_count = int (book_height / text_height + 0.5);
331 SCM breaks = SCM_EOL;
332 Real page_height = text_height + first;
335 for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
337 Paper_line *pl = unsmob_paper_line (ly_car (s));
338 if (!pl->is_title () && h < page_height)
340 h += pl->dim ()[Y_AXIS];
341 if (!pl->is_title () && h > page_height)
343 breaks = ly_snoc (scm_int2num (number), breaks);
345 page_height = text_height + (page_number == page_count) * last;
348 if (ly_cdr (s) == SCM_EOL)
349 breaks = ly_snoc (scm_int2num (pl->number_), breaks);
352 return scm_vector (breaks);
355 LY_DEFINE (ly_ragged_page_breaks, "ly:ragged-page-breaks",
356 5, 0, 0, (SCM lines, SCM book, SCM text, SCM first, SCM last),
357 "Return a vector with line numbers of page breaks.")
359 SCM_ASSERT_TYPE (scm_pair_p (lines), lines, SCM_ARG1, __FUNCTION__, "list");
360 SCM_ASSERT_TYPE (ly_c_number_p (book), book, SCM_ARG2, __FUNCTION__, "real");
361 SCM_ASSERT_TYPE (ly_c_number_p (text), text, SCM_ARG2, __FUNCTION__, "real");
362 SCM_ASSERT_TYPE (ly_c_number_p (first), first, SCM_ARG2, __FUNCTION__, "real");
363 SCM_ASSERT_TYPE (ly_c_number_p (last), last, SCM_ARG2, __FUNCTION__, "real");
365 return c_ragged_page_breaks (lines,
366 ly_scm2double (book), ly_scm2double (text),
367 ly_scm2double (first), ly_scm2double (last));
370 /****************************************************************/
372 Score_lines::Score_lines ()
379 Score_lines::gc_mark ()
381 scm_gc_mark (lines_);
382 scm_gc_mark (header_);