/*
- paper-def.cc -- implement Paper_def
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
-#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"
-#include "input-translator.hh"
-#include "engraver-group.hh"
-#include "assoc-iter.hh"
-
-void
-Paper_def::set_var (String s, Real r)
-{
- real_vars_p_->elem (s) = r;
-}
-
-Real
-Paper_def::get_var (String s)const
-{
- if (! real_vars_p_->elt_b (s))
- error ( "unknown paper variable `" + s+"'");
- return real_vars_p_->elem (s);
-}
+#include "dimensions.hh"
+#include "libc-extension.hh"
+#include "output-def.hh"
+#include "modified-font-metric.hh"
+#include "pango-font.hh"
+#include "all-font-metrics.hh"
+#include "lily-imports.hh"
Real
-Paper_def::linewidth_f() const
+output_scale (Output_def *od)
{
- return get_var ("linewidth");
+ return scm_to_double (od->lookup_variable (ly_symbol2scm ("output-scale")));
}
-Real
-Paper_def::duration_to_dist (Moment d,Real k)const
+SCM
+get_font_table (Output_def *def)
{
- if (get_var("geometric"))
- return geometric_spacing(d);
- return arithmetic_spacing(d,k);
+ SCM font_table = def->lookup_variable (ly_symbol2scm ("scaled-fonts"));
+ if (!to_boolean (scm_hash_table_p (font_table)))
+ {
+ font_table = scm_c_make_hash_table (11);
+ def->set_variable (ly_symbol2scm ("scaled-fonts"), font_table);
+ }
+ return font_table;
}
-
-/**
- Get the measure wide constant for arithmetic.
-
- @see
- John S. Gourlay. ``Spacing a Line of Music,'' Technical Report
- OSU-CISRC-10/87-TR35, Department of Computer and Information Science,
- The Ohio State University, 1987.
-
- */
-Real
-Paper_def::arithmetic_constant(Moment d) const
+SCM
+get_pango_font_table (Output_def *def)
{
- return get_var("arithmetic_basicspace") - log_2(Moment(1,8) <? d);
+ SCM font_table = def->lookup_variable (ly_symbol2scm ("pango-fonts"));
+ if (!to_boolean (scm_hash_table_p (font_table)))
+ {
+ font_table = scm_c_make_hash_table (11);
+ def->set_variable (ly_symbol2scm ("pango-fonts"), font_table);
+ }
+ return font_table;
}
-Real
-Paper_def::arithmetic_spacing(Moment d ,Real k)const
+/* TODO: should add nesting for Output_def here too. */
+Font_metric *
+find_scaled_font (Output_def *mod, Font_metric *f, Real m)
{
- return (log_2(d) + k)* get_var( "arithmetic_multiplier");
-}
+ if (mod->parent_)
+ return find_scaled_font (mod->parent_, f, m);
-Real
-Paper_def::geometric_spacing(Moment d) const
-{
- Real dur_f = (d) ?pow (get_var ("geometric"), log_2(d)) : 0;
- return get_var ("basicspace") + get_var ("unitspace") * dur_f;
-}
+ Real lookup_mag = m / output_scale (mod);
-Paper_def::Paper_def()
-{
- itrans_p_ = 0;
- lookup_p_ = 0;
- real_vars_p_ = new Assoc<String,Real>;
-}
+ 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<Font_metric> (scm_cdr (handle));
-Paper_def::~Paper_def()
-{
- delete itrans_p_;
- delete real_vars_p_;
- delete lookup_p_;
-}
+ SCM val = Modified_font_metric::make_scaled_font_metric (f, lookup_mag);
-Paper_def::Paper_def (Paper_def const&s)
-{
- itrans_p_ = s.itrans_p_ ? new Input_translator (*s.itrans_p_):0;
- 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_;
+ sizes = scm_acons (scm_from_double (lookup_mag), val, sizes);
+ unsmob<Font_metric> (val)->unprotect ();
+ scm_hashq_set_x (font_table, f->self_scm (), sizes);
+ return unsmob<Font_metric> (val);
}
-void
-Paper_def::set (Input_translator * itrans_p)
+Font_metric *
+find_pango_font (Output_def *layout, SCM descr, Real factor)
{
- delete itrans_p_;
- itrans_p_ = itrans_p;
-}
+ if (layout->parent_)
+ return find_pango_font (layout->parent_, descr, factor);
-void
-Paper_def::set (Lookup*l)
-{
- assert (l != lookup_p_);
- delete lookup_p_;
- lookup_p_ = l;
- lookup_p_->paper_l_ = this;
-}
+ 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<Font_metric> (scm_cdr (handle));
-Real
-Paper_def::interline_f() const
-{
- return get_var ("interline");
-}
+ PangoFontDescription *description
+ = pango_font_description_from_string (scm_i_string_chars (descr));
+ pango_font_description_set_size
+ (description,
+ gint (my_round (factor * pango_font_description_get_size (description))));
-Real
-Paper_def::rule_thickness()const
-{
- return get_var ("rule_thickness");
-}
+ Font_metric *fm = all_fonts_global->find_pango_font (description,
+ output_scale (layout));
-Real
-Paper_def::interbeam_f() const
-{
- return get_var ("interbeam");
-}
-Real
-Paper_def::internote_f() const
-{
- return interline_f() / 2;
-}
+ pango_font_description_free (description);
-Real
-Paper_def::note_width()const
-{
- return get_var ("notewidth");
-}
+ sizes = scm_acons (size_key, fm->self_scm (), sizes);
+ scm_hash_set_x (table, descr, sizes);
-void
-Paper_def::print() const
-{
-#ifndef NPRINT
- DOUT << "Paper {";
- DOUT << "out: " <<outfile_str_;
- lookup_p_->print();
- itrans_p_->print();
- for (Assoc_iter<String,Real> i (*real_vars_p_); i.ok(); i++)
- {
- DOUT << i.key() << "= " << i.val () << "\n";
- }
- DOUT << "}\n";
-#endif
+ return fm;
}
-Lookup const *
-Paper_def::lookup_l()
+/* 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)
{
- assert (lookup_p_);
- return lookup_p_;
-}
+ SCM new_pap = Lily::scale_layout (o->self_scm (), scm_from_double (amount));
-Global_translator*
-Paper_def::get_global_translator_p() const
-{
- return itrans_p_->get_group_engraver_p()->global_l ();
+ o = unsmob<Output_def> (new_pap);
+ o->protect ();
+ return o;
}
+
projects / lilypond.git / blobdiff