2 book-paper-def.cc -- implement Book_paper_def
4 source file of the GNU LilyPond music typesetter
6 (c) 2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
10 #include "ly-module.hh"
11 #include "paper-def.hh"
12 #include "dimensions.hh"
13 #include "book-paper-def.hh"
14 #include "ly-smobs.icc"
15 #include "font-metric.hh"
16 #include "virtual-font-metric.hh"
17 #include "scaled-font-metric.hh"
19 IMPLEMENT_SMOBS (Book_paper_def);
20 IMPLEMENT_DEFAULT_EQUAL_P (Book_paper_def);
22 Book_paper_def::Book_paper_def ()
25 scaled_fonts_ = SCM_EOL;
28 scaled_fonts_ = scm_c_make_hash_table (11);
29 scope_ = ly_make_anonymous_module (false);
32 Book_paper_def::Book_paper_def (Book_paper_def const & src)
34 output_scale_ = src.output_scale_;
36 scaled_fonts_ = SCM_EOL;
38 scope_= ly_make_anonymous_module (false);
39 if (is_module (src.scope_))
40 ly_import_module (scope_, src.scope_);
42 scaled_fonts_ = scm_c_make_hash_table (11); // copying is not done with live defs. hopefully.
45 Book_paper_def::~Book_paper_def ()
50 Book_paper_def::mark_smob (SCM m)
52 Book_paper_def *mo = (Book_paper_def*) SCM_CELL_WORD_1 (m);
54 scm_gc_mark (mo->scope_);
55 return mo->scaled_fonts_;
59 Book_paper_def::print_smob (SCM s, SCM p, scm_print_state*)
62 scm_puts ("#<Book_paper>", p);
67 Book_paper_def::find_scaled_font (Font_metric *f, Real m, SCM input_enc_name)
70 if (!dynamic_cast<Virtual_font_metric*> (f))
71 lookup_mag /= output_scale_;
73 SCM sizes = scm_hashq_ref (scaled_fonts_, f->self_scm (), SCM_BOOL_F);
74 if (sizes != SCM_BOOL_F)
76 SCM met = scm_assoc (scm_make_real (lookup_mag), sizes);
77 if (ly_c_pair_p (met))
78 return unsmob_metrics (ly_cdr (met));
83 /* Hmm. We're chaining font - metrics. Should consider whether to
84 merge virtual-font and scaled_font. */
86 if (Virtual_font_metric * vf = dynamic_cast<Virtual_font_metric*> (f))
89 For fontify_atom (), the magnification and name must be known
90 at the same time. That's impossible for
92 Scaled (Virtual_font (Font1,Font2))
96 Virtual_font (Scaled (Font1), Scaled (Font2))
102 for (SCM s = vf->get_font_list (); ly_c_pair_p (s); s = ly_cdr (s))
104 Font_metric *scaled = find_scaled_font (unsmob_metrics (ly_car (s)),
106 *t = scm_cons (scaled->self_scm (), SCM_EOL);
110 vf = new Virtual_font_metric (lst);
111 val = vf->self_scm ();
115 if (!ly_c_symbol_p (input_enc_name))
119 SCM var = ly_module_lookup (scope_, ly_symbol2scm ("inputencoding"));
120 input_enc_name = scm_variable_ref (var);
123 input_enc_name = ly_symbol2scm ("latin1");
126 val = Modified_font_metric::make_scaled_font_metric (input_enc_name,
130 sizes = scm_acons (scm_make_real (lookup_mag), val, sizes);
131 scm_gc_unprotect_object (val);
132 scm_hashq_set_x (scaled_fonts_, f->self_scm (), sizes);
133 return unsmob_metrics (val);
137 Book_paper_def::scale_paper (Paper_def *pd) const
139 SCM proc = ly_scheme_function ("scale-paper");
140 SCM new_pap = scm_call_2 (proc, pd->self_scm (), self_scm ());
142 scm_gc_protect_object (new_pap);
144 Paper_def *p = unsmob_paper (new_pap);
146 p->bookpaper_ = (Book_paper_def*) this;
150 LY_DEFINE (ly_make_bookpaper, "ly:make-bookpaper",
153 "Make a paperbook, for staff space SIZE, which is in INTERNAL_UNIT.")
155 Book_paper_def *bp = new Book_paper_def ;
157 SCM_ASSERT_TYPE (ly_c_number_p (size), size,
158 SCM_ARG1, __FUNCTION__, "number");
160 bp->output_scale_ = (ly_scm2double (size)) MM;
162 return scm_gc_unprotect_object (bp->self_scm ());
165 LY_DEFINE (ly_bookpaper_fonts, "ly:bookpaper-fonts",
168 "Return fonts scaled up BP")
170 Book_paper_def *b = unsmob_book_paper_def (bp);
172 SCM_ASSERT_TYPE (b, bp, SCM_ARG1, __FUNCTION__, "bookpaper");
174 SCM func = ly_scheme_function ("hash-table->alist");
177 for (SCM s = scm_call_1 (func, b->scaled_fonts_); ly_c_pair_p (s);
180 SCM entry = ly_car (s);
181 for (SCM t = ly_cdr (entry); ly_c_pair_p (t); t = ly_cdr (t))
183 Font_metric *fm = unsmob_metrics (ly_cdar (t));
185 if (dynamic_cast<Modified_font_metric*> (fm))
186 ell = scm_cons (fm->self_scm (), ell);
193 LY_DEFINE (ly_bookpaper_outputscale, "ly:bookpaper-outputscale",
196 "Get outputscale for BP.")
198 Book_paper_def *b = unsmob_book_paper_def (bp);
199 SCM_ASSERT_TYPE (b, bp, SCM_ARG1, __FUNCTION__, "bookpaper");
200 return scm_make_real (b->output_scale_);
205 Book_paper_def::lookup_variable (SCM sym) const
207 SCM var = ly_module_lookup (scope_, sym);
209 return scm_variable_ref (var);
213 Book_paper_def::c_variable (String s) const
215 return lookup_variable (ly_symbol2scm (s.to_str0 ()));
219 LY_DEFINE (ly_book_paper_def_scope, "ly:bookpaper-def-scope",
221 "Get the variable scope inside @var{def}.")
223 Book_paper_def *op = unsmob_book_paper_def (def);
224 SCM_ASSERT_TYPE (op, def, SCM_ARG1, __FUNCTION__, "Output definition");