/*
- paper-def.cc -- implement Paper_def
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the LilyPond music typesetter
+ Copyright (C) 2004--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
-*/
-
-#include <math.h>
-#include "misc.hh"
-#include "paper-def.hh"
-#include "debug.hh"
-#include "lookup.hh"
-#include "dimen.hh"
+ 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/>.
+*/
-// golden ratio
-const Real PHI = (1+sqrt(5))/2;
+#include "dimensions.hh"
+#include "output-def.hh"
+#include "modified-font-metric.hh"
+#include "pango-font.hh"
+#include "all-font-metrics.hh"
-// see Roelofs, p. 57
Real
-Paper_def::duration_to_dist(Moment d)
+output_scale (Output_def *od)
{
- if (!d)
- return 0;
-
- return whole_width * pow(geometric_, log_2(d));
+ return scm_to_double (od->lookup_variable (ly_symbol2scm ("output-scale")));
}
-Real
-Paper_def::rule_thickness()const
+SCM
+get_font_table (Output_def *def)
{
- return 0.4 PT;
+ 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;
}
-Paper_def::Paper_def(Lookup *l)
+SCM
+get_pango_font_table (Output_def *def)
{
- lookup_p_ = l;
- linewidth = 15 *CM_TO_PT; // in cm for now
- whole_width = 8 * note_width();
- geometric_ = sqrt(2);
- outfile = "lelie.out";
+ 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)
{
- delete lookup_p_;
-}
-Paper_def::Paper_def(Paper_def const&s)
-{
- lookup_p_ = new Lookup(*s.lookup_p_);
- geometric_ = s.geometric_;
- whole_width = s.whole_width;
- outfile = s.outfile;
- linewidth = s.linewidth;
-}
+ if (mod->parent_)
+ return find_scaled_font (mod->parent_, f, m);
-void
-Paper_def::set(Lookup*l)
-{
- assert(l != lookup_p_);
- delete lookup_p_;
- lookup_p_ = l;
-}
+ Real lookup_mag = m / output_scale (mod);
-Real
-Paper_def::interline() const
-{
- return lookup_p_->ball(4).dim.y.length();
-}
+ 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));
-Real
-Paper_def::internote() const
-{
- return lookup_p_->internote();
-}
-Real
-Paper_def::note_width()const
-{
- return lookup_p_->ball(4).dim.x.length( );
-}
-Real
-Paper_def::standard_height() const
-{
- return 20 PT;
+ SCM val = Modified_font_metric::make_scaled_font_metric (f, lookup_mag);
+
+ 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);
}
-void
-Paper_def::print() const
+Font_metric *
+find_pango_font (Output_def *layout, SCM descr, Real factor)
{
-#ifndef NPRINT
- mtor << "Paper {width: " << print_dimen(linewidth);
- mtor << "whole: " << print_dimen(whole_width);
- mtor << "out: " <<outfile;
- lookup_p_->print();
- mtor << "}\n";
-#endif
+ 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));
+
+ pango_font_description_set_size (description,
+ gint (factor *
+ pango_font_description_get_size (description)));
+
+ Font_metric *fm = all_fonts_global->find_pango_font (description,
+ output_scale (layout));
+
+ pango_font_description_free (description);
+
+ sizes = scm_acons (size_key, fm->self_scm (), sizes);
+ scm_hash_set_x (table, descr, sizes);
+
+ 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)
{
- return lookup_p_;
+ SCM proc = ly_lily_module_constant ("scale-layout");
+ SCM new_pap = scm_call_2 (proc, o->self_scm (), scm_from_double (amount));
+
+ o = unsmob_output_def (new_pap);
+ o->protect ();
+ return o;
}
+