2 book-paper-def.cc -- implement Book_output_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 "output-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 Book_output_def::Book_output_def ()
22 scaled_fonts_ = SCM_EOL;
23 scaled_fonts_ = scm_c_make_hash_table (11);
27 Book_output_def::output_scale () const
32 Book_output_def::Book_output_def (Book_output_def const & src)
35 output_scale_ = src.output_scale_;
36 scaled_fonts_ = SCM_EOL;
37 scaled_fonts_ = scm_c_make_hash_table (11); // copying is not done with live defs. hopefully.
41 Book_output_def::derived_mark ()
43 scm_gc_mark (scaled_fonts_);
49 Book_output_def::find_scaled_font (Font_metric *f, Real m, SCM input_enc_name)
52 if (!dynamic_cast<Virtual_font_metric*> (f))
53 lookup_mag /= output_scale ();
55 SCM sizes = scm_hashq_ref (scaled_fonts_, f->self_scm (), SCM_BOOL_F);
56 if (sizes != SCM_BOOL_F)
58 SCM met = scm_assoc (scm_make_real (lookup_mag), sizes);
59 if (ly_c_pair_p (met))
60 return unsmob_metrics (ly_cdr (met));
65 /* Hmm. We're chaining font - metrics. Should consider whether to
66 merge virtual-font and scaled_font. */
68 if (Virtual_font_metric * vf = dynamic_cast<Virtual_font_metric*> (f))
71 For fontify_atom (), the magnification and name must be known
72 at the same time. That's impossible for
74 Scaled (Virtual_font (Font1,Font2))
78 Virtual_font (Scaled (Font1), Scaled (Font2))
84 for (SCM s = vf->get_font_list (); ly_c_pair_p (s); s = ly_cdr (s))
86 Font_metric *scaled = find_scaled_font (unsmob_metrics (ly_car (s)),
88 *t = scm_cons (scaled->self_scm (), SCM_EOL);
92 vf = new Virtual_font_metric (lst);
93 val = vf->self_scm ();
97 if (!ly_c_symbol_p (input_enc_name))
99 SCM var = ly_module_lookup (scope_, ly_symbol2scm ("inputencoding"));
100 if (var != SCM_BOOL_F)
101 input_enc_name = scm_variable_ref (var);
102 if (!ly_c_symbol_p (input_enc_name))
103 input_enc_name = ly_symbol2scm ("latin1");
106 val = Modified_font_metric::make_scaled_font_metric (input_enc_name,
110 sizes = scm_acons (scm_make_real (lookup_mag), val, sizes);
111 scm_gc_unprotect_object (val);
112 scm_hashq_set_x (scaled_fonts_, f->self_scm (), sizes);
113 return unsmob_metrics (val);
117 Book_output_def::scale_paper (Output_def *pd) const
119 SCM proc = ly_scheme_function ("scale-paper");
120 SCM new_pap = scm_call_2 (proc, pd->self_scm (), self_scm ());
122 scm_gc_protect_object (new_pap);
124 Output_def *p = unsmob_output_def (new_pap);
126 p->parent_ = (Output_def*) this;
130 LY_DEFINE (ly_make_bookpaper, "ly:make-bookpaper",
133 "Make a paperbook, for staff space SIZE, which is in INTERNAL_UNIT.")
135 Book_output_def *bp = new Book_output_def ;
137 SCM_ASSERT_TYPE (ly_c_number_p (size), size,
138 SCM_ARG1, __FUNCTION__, "number");
140 bp->output_scale_ = (ly_scm2double (size)) MM;
142 return scm_gc_unprotect_object (bp->self_scm ());
146 unsmob_book_output_def (SCM bp)
148 return dynamic_cast<Book_output_def*> (unsmob_output_def (bp));
151 LY_DEFINE (ly_bookpaper_fonts, "ly:bookpaper-fonts",
154 "Return fonts scaled up BP")
156 Book_output_def *b = unsmob_book_output_def (bp);
158 SCM_ASSERT_TYPE (b, bp, SCM_ARG1, __FUNCTION__, "bookpaper");
160 SCM func = ly_scheme_function ("hash-table->alist");
163 for (SCM s = scm_call_1 (func, b->scaled_fonts_); ly_c_pair_p (s);
166 SCM entry = ly_car (s);
167 for (SCM t = ly_cdr (entry); ly_c_pair_p (t); t = ly_cdr (t))
169 Font_metric *fm = unsmob_metrics (ly_cdar (t));
171 if (dynamic_cast<Modified_font_metric*> (fm))
172 ell = scm_cons (fm->self_scm (), ell);
179 LY_DEFINE (ly_bookpaper_outputscale, "ly:bookpaper-outputscale",
182 "Get outputscale for BP.")
184 Book_output_def *b = unsmob_book_output_def (bp);
185 SCM_ASSERT_TYPE (b, bp, SCM_ARG1, __FUNCTION__, "bookpaper");
186 return scm_make_real (b->output_scale_);
191 LY_DEFINE (ly_book_output_def_scope, "ly:bookpaper-def-scope",
193 "Get the variable scope inside @var{def}.")
195 Book_output_def *op = unsmob_book_output_def (def);
196 SCM_ASSERT_TYPE (op, def, SCM_ARG1, __FUNCTION__, "Output definition");