source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include <math.h>
-#include "string.hh"
-#include "assoc.hh"
-#include "misc.hh"
-#include "paper-def.hh"
-#include "debug.hh"
-#include "lookup.hh"
-#include "dimen.hh"
-
-
-void
-Paper_def::set_var(String s, Real r)
-{
- real_vars_p_->elem(s) = r;
-}
+#include "dimensions.hh"
+#include "output-def.hh"
+#include "modified-font-metric.hh"
+#include "pango-font.hh"
+#include "all-font-metrics.hh"
Real
-Paper_def::get_var(String s)const
+output_scale (Output_def *od)
{
- if(! real_vars_p_->elt_b(s))
- error ( "unknown paper variable `" + s+"'");
- return real_vars_p_->elem(s);
+ return scm_to_double (od->lookup_variable (ly_symbol2scm ("output-scale")));
}
-Real
-Paper_def::linewidth_f() const
+SCM
+get_font_table (Output_def *def)
{
- return get_var("linewidth");
+ SCM font_table = def->lookup_variable (ly_symbol2scm ("scaled-fonts"));
+ if (scm_hash_table_p (font_table) != SCM_BOOL_T)
+ {
+ font_table = scm_c_make_hash_table (11);
+ def->set_variable (ly_symbol2scm ("scaled-fonts"), font_table);
+ }
+ return font_table;
}
-Real
-Paper_def::duration_to_dist(Moment d)
+SCM
+get_pango_font_table (Output_def *def)
{
- if (!d)
- return 0;
-
- return get_var("unitspace") * pow(get_var("geometric"), log_2(d));
+ SCM font_table = def->lookup_variable (ly_symbol2scm ("pango-fonts"));
+ if (scm_hash_table_p (font_table) != SCM_BOOL_T)
+ {
+ font_table = scm_c_make_hash_table (11);
+ def->set_variable (ly_symbol2scm ("pango-fonts"), font_table);
+ }
+ return font_table;
}
-
-Paper_def::Paper_def()
+/* TODO: should add nesting for Output_def here too. */
+Font_metric *
+find_scaled_font (Output_def *mod, Font_metric *f, Real m)
{
- lookup_p_ = 0;
- real_vars_p_ = new Assoc<String,Real>;
- outfile_str_ = "lelie.tex";
-}
+ if (mod->parent_)
+ return find_scaled_font (mod->parent_, f, m);
-Paper_def::~Paper_def()
-{
- delete real_vars_p_;
- delete lookup_p_;
-}
+ Real lookup_mag = m / output_scale (mod);
-Paper_def::Paper_def(Paper_def const&s)
-{
- lookup_p_ = s.lookup_p_? new Lookup(*s.lookup_p_) : 0;
- lookup_p_->paper_l_ = this;
- real_vars_p_ = new Assoc<String,Real> (*s.real_vars_p_);
- outfile_str_ = s.outfile_str_;
-}
+ SCM font_table = get_font_table (mod);
+ SCM sizes = scm_hashq_ref (font_table, f->self_scm (), SCM_EOL);
+ SCM handle = scm_assoc (scm_from_double (lookup_mag), sizes);
+ if (scm_is_pair (handle))
+ return unsmob_metrics (scm_cdr (handle));
-void
-Paper_def::set(Lookup*l)
-{
- assert(l != lookup_p_);
- delete lookup_p_;
- lookup_p_ = l;
- lookup_p_->paper_l_ = this;
-}
+ SCM val = Modified_font_metric::make_scaled_font_metric (f, lookup_mag);
-Real
-Paper_def::interline_f() const
-{
- return get_var("interline");
+ sizes = scm_acons (scm_from_double (lookup_mag), val, sizes);
+ unsmob_metrics (val)->unprotect ();
+ scm_hashq_set_x (font_table, f->self_scm (), sizes);
+ return unsmob_metrics (val);
}
-
-Real
-Paper_def::rule_thickness()const
+Font_metric *
+find_pango_font (Output_def *layout, SCM descr, Real factor)
{
- return get_var("rule_thickness");
+ if (layout->parent_)
+ return find_pango_font (layout->parent_, descr, factor);
+
+ SCM table = get_pango_font_table (layout);
+ SCM sizes = scm_hash_ref (table, descr, SCM_EOL);
+ SCM size_key = scm_from_double (factor);
+ SCM handle = scm_assoc (size_key, sizes);
+ if (scm_is_pair (handle))
+ return unsmob_metrics (scm_cdr (handle));
+
+ PangoFontDescription *description
+ = pango_font_description_from_string (scm_i_string_chars (descr));
+ Font_metric *fm = all_fonts_global->find_pango_font (description,
+ factor,
+ output_scale (layout));
+
+ sizes = scm_acons (size_key, fm->self_scm (), sizes);
+ scm_hash_set_x (table, descr, sizes);
+
+ return fm;
}
-Real
-Paper_def::interbeam_f() const
-{
- return get_var("interbeam");
-}
-Real
-Paper_def::internote_f() const
+/* TODO: this is a nasty interface. During formatting,
+ the Output_def should be scaled to the output_scale_
+ specified in the toplevel Output_def. */
+Output_def *
+scale_output_def (Output_def *o, Real amount)
{
- return interline_f() / 2;
-}
+ SCM proc = ly_lily_module_constant ("scale-layout");
+ SCM new_pap = scm_call_2 (proc, o->self_scm (), scm_double2num (amount));
-Real
-Paper_def::note_width()const
-{
- return get_var("notewidth");
+ o = unsmob_output_def (new_pap);
+ o->protect ();
+ return o;
}
-void
-Paper_def::print() const
-{
-#ifndef NPRINT
- mtor << "Paper {";
- mtor << "out: " <<outfile_str_;
- lookup_p_->print();
- mtor << "}\n";
-#endif
-}
-Lookup const *
-Paper_def::lookup_l()
-{
- assert( lookup_p_ );
- return lookup_p_;
-}