2 paper-def.cc -- implement Paper_def
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2003 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"
23 #include "ly-modules.hh"
27 This is an almost empty thing. The only substantial thing this class
28 handles, is scaling up and down to real-world dimensions (internally
29 dimensions are against global staff-space.)
32 Paper_def::Paper_def ()
36 Paper_def::~Paper_def ()
40 Paper_def::Paper_def (Paper_def const&src)
41 : Music_output_def (src)
48 Paper_def::get_realvar (SCM s) const
50 SCM val = lookup_variable (s);
51 SCM scale = lookup_variable (ly_symbol2scm ("outputscale"));
53 Real sc = gh_scm2double (scale);
54 return gh_scm2double (val) / sc;
58 FIXME. This is broken until we have a generic way of
59 putting lists inside the \paper block.
62 Paper_def::line_dimensions_int (int n) const
64 Real lw = get_realvar (ly_symbol2scm ("linewidth"));
65 Real ind = n? 0.0:get_realvar (ly_symbol2scm ("indent"));
67 return Interval (ind, lw);
71 int Paper_def::score_count_ = 0;
74 Paper_def::get_next_score_count () const
76 return score_count_ ++;
80 Paper_def::reset_score_count ()
87 Paper_def::get_paper_outputter ()
89 String outname = outname_string ();
90 progress_indication (_f ("paper output to `%s'...",
91 outname == "-" ? String ("<stdout>") : outname));
93 global_input_file->target_strings_.push (outname);
94 Paper_outputter * po = new Paper_outputter (outname);
95 Path p = split_path (outname);
97 po->basename_ = p.to_string ();
103 todo: use symbols and hashtable idx?
106 Paper_def::find_font (SCM fn, Real m)
108 SCM key = gh_cons (fn, gh_double2scm (m));
109 SCM met = scm_assoc (key, scaled_fonts_);
112 return unsmob_metrics (ly_cdr (met));
115 Hmm. We're chaining font - metrics. Should consider wether to merge
116 virtual-font and scaled_font.
121 f = new Virtual_font_metric (fn, m, this);
125 SCM scale_var = ly_module_lookup (scope_, ly_symbol2scm ("outputscale"));
127 m /= gh_scm2double (scm_variable_ref (scale_var));
129 f = all_fonts_global->find_font (ly_scm2string (fn));
130 SCM val = Scaled_font_metric::make_scaled_font_metric (f, m);
131 scaled_fonts_ = scm_acons (key, val, scaled_fonts_);
132 f = unsmob_metrics (val);
133 scm_gc_unprotect_object (val);
141 Return alist to translate internally used fonts back to real-world
144 Paper_def::font_descriptions ()const
147 for (SCM s = scaled_fonts_; gh_pair_p (s); s = ly_cdr (s))
149 SCM desc = ly_caar (s);
150 SCM mdesc = unsmob_metrics (ly_cdar (s))->description_;
152 l = gh_cons (gh_cons (mdesc, desc), l);