2 paper-def.cc -- implement Paper_def
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 #include "virtual-font-metric.hh"
13 #include "all-font-metrics.hh"
16 #include "paper-def.hh"
18 #include "scaled-font-metric.hh"
20 #include "scm-hash.hh"
21 #include "input-file-results.hh" // urg? header_global
22 #include "paper-outputter.hh"
25 This is an almost empty thing. The only substantial thing this class
26 handles, is scaling up and down to real-world dimensions (internally
27 dimensions are against global staff-space.)
30 Paper_def::Paper_def ()
34 Paper_def::~Paper_def ()
38 Paper_def::Paper_def (Paper_def const&src)
39 : Music_output_def (src)
45 Paper_def::get_var (String s) const
47 return get_realvar (ly_symbol2scm (s.to_str0 ()));
51 Paper_def::get_realvar (SCM s) const
53 SCM val = lookup_variable (s);
54 SCM scale = lookup_variable (ly_symbol2scm ("outputscale"));
56 Real sc = gh_scm2double (scale);
57 return gh_scm2double (val) / sc;
61 FIXME. This is broken until we have a generic way of
62 putting lists inside the \paper block.
65 Paper_def::line_dimensions_int (int n) const
67 Real lw = get_var ("linewidth");
68 Real ind = n? 0.0:get_var ("indent");
70 return Interval (ind, lw);
75 int Paper_def::score_count_ = 0;
78 Paper_def::get_next_score_count () const
80 return score_count_ ++;
84 Paper_def::reset_score_count ()
91 Paper_def::get_paper_outputter ()
93 String outname = outname_string ();
94 progress_indication (_f ("paper output to `%s'...",
95 outname == "-" ? String ("<stdout>") : outname));
97 global_input_file->target_strings_.push (outname);
98 Paper_outputter * po = new Paper_outputter (outname);
99 Path p = split_path (outname);
101 po->basename_ = p.string ();
107 todo: use symbols and hashtable idx?
112 Paper_def::find_font (SCM fn, Real m)
114 SCM key = gh_cons (fn, gh_double2scm (m));
115 SCM met = scm_assoc (key, scaled_fonts_);
118 return unsmob_metrics (ly_cdr (met));
121 Hmm. We're chaining font - metrics. Should consider wether to merge
122 virtual-font and scaled_font.
127 f = new Virtual_font_metric (fn, m, this);
131 SCM var = scm_module_lookup (scope_, ly_symbol2scm ("outputscale"));
132 m /= gh_scm2double (scm_variable_ref (var));
134 f = all_fonts_global->find_font (ly_scm2string (fn));
135 SCM val = Scaled_font_metric::make_scaled_font_metric (f, m);
136 scaled_fonts_ = scm_acons (key, val, scaled_fonts_);
137 f = unsmob_metrics (val);
138 scm_gc_unprotect_object (val);
146 Return alist to translate internally used fonts back to real-world
149 Paper_def::font_descriptions ()const
152 for (SCM s = scaled_fonts_; gh_pair_p (s); s = ly_cdr (s))
154 SCM desc = ly_caar (s);
155 SCM mdesc = unsmob_metrics (ly_cdar (s))->description_;
157 l = gh_cons (gh_cons (mdesc, desc), l);