/*
- 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--2004 Han-Wen Nienhuys <hanwen@cs.uu.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.
-#include <math.h>
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
-#include "virtual-font-metric.hh"
+#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 "string.hh"
-#include "misc.hh"
-#include "paper-def.hh"
-#include "warn.hh"
-#include "scaled-font-metric.hh"
-#include "main.hh"
-#include "scm-hash.hh"
-#include "input-file-results.hh" // urg? header_global
-#include "paper-outputter.hh"
-#include "ly-module.hh"
+#include "lily-imports.hh"
-/*
- This is an almost empty thing. The only substantial thing this class
- handles, is scaling up and down to real-world dimensions (internally
- dimensions are against global staff-space.)
-
- */
-Paper_def::Paper_def ()
-{
-}
-
-Paper_def::~Paper_def ()
+Real
+output_scale (Output_def *od)
{
+ return scm_to_double (od->lookup_variable (ly_symbol2scm ("output-scale")));
}
-Paper_def::Paper_def (Paper_def const&src)
- : Music_output_def (src)
+SCM
+get_font_table (Output_def *def)
{
+ 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;
}
-Real
-Paper_def::get_realvar (SCM s) const
+SCM
+get_pango_font_table (Output_def *def)
{
- SCM val = lookup_variable (s);
- SCM scale = lookup_variable (ly_symbol2scm ("outputscale"));
-
- Real sc = gh_scm2double (scale);
- return gh_scm2double (val) / sc;
+ 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;
}
-/*
- FIXME. This is broken until we have a generic way of
- putting lists inside the \paper block.
- */
-Interval
-Paper_def::line_dimensions_int (int n) const
+/* TODO: should add nesting for Output_def here too. */
+Font_metric *
+find_scaled_font (Output_def *mod, Font_metric *f, Real m)
{
- Real lw = get_realvar (ly_symbol2scm ("linewidth"));
- Real ind = n? 0.0:get_realvar (ly_symbol2scm ("indent"));
-
- return Interval (ind, lw);
-}
+ if (mod->parent_)
+ return find_scaled_font (mod->parent_, f, m);
+ Real lookup_mag = m / output_scale (mod);
+ 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));
+ SCM val = Modified_font_metric::make_scaled_font_metric (f, lookup_mag);
-Paper_outputter*
-Paper_def::get_paper_outputter (String outname) const
-{
- progress_indication (_f ("paper output to `%s'...",
- outname == "-" ? String ("<stdout>") : outname));
-
- global_input_file->target_strings_.push (outname);
- Paper_outputter * po = new Paper_outputter (outname);
- Path p = split_path (outname);
- p.ext = "";
- po->basename_ = p.to_string ();
- return po;
+ 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);
}
-
-/*
- Todo: use symbols and hashtable idx?
-*/
Font_metric *
-Paper_def::find_font (SCM fn, Real m)
+find_pango_font (Output_def *layout, SCM descr, Real factor)
{
- SCM key = gh_cons (fn, gh_double2scm (m));
- SCM met = scm_assoc (key, scaled_fonts_);
-
- if (gh_pair_p (met))
- return unsmob_metrics (ly_cdr (met));
-
- /*
- Hmm. We're chaining font - metrics. Should consider wether to merge
- virtual-font and scaled_font.
- */
- Font_metric* f=0;
- if (gh_list_p (fn))
- {
- f = new Virtual_font_metric (fn, m, this); // TODO: GC protection.
-
- scaled_fonts_ = scm_acons (key, f->self_scm (), scaled_fonts_);
- scm_gc_unprotect_object (f->self_scm ());
- }
- else
- {
- SCM scale_var = ly_module_lookup (scope_, ly_symbol2scm ("outputscale"));
+ if (layout->parent_)
+ return find_pango_font (layout->parent_, descr, factor);
- m /= gh_scm2double (scm_variable_ref (scale_var));
+ 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));
- f = all_fonts_global->find_font (ly_scm2string (fn));
- SCM val = Scaled_font_metric::make_scaled_font_metric (f, m);
- scaled_fonts_ = scm_acons (key, val, scaled_fonts_);
- scm_gc_unprotect_object (val);
-
- f = unsmob_metrics (val);
- }
+ PangoFontDescription *description
+ = pango_font_description_from_string (scm_i_string_chars (descr));
- return f;
-}
+ pango_font_description_set_size
+ (description,
+ gint (my_round (factor * pango_font_description_get_size (description))));
+ Font_metric *fm = all_fonts_global->find_pango_font (description,
+ output_scale (layout));
-/*
- Return alist to translate internally used fonts back to real-world
- coordinates. */
-SCM
-Paper_def::font_descriptions ()const
-{
- SCM l = SCM_EOL;
- for (SCM s = scaled_fonts_; gh_pair_p (s); s = ly_cdr (s))
- {
- SCM desc = ly_caar (s);
- if (!gh_string_p (gh_car (desc)))
- continue ;
+ pango_font_description_free (description);
- SCM mdesc = unsmob_metrics (ly_cdar (s))->description_;
+ sizes = scm_acons (size_key, fm->self_scm (), sizes);
+ scm_hash_set_x (table, descr, sizes);
- l = gh_cons (gh_cons (mdesc, desc), l);
- }
- return l;
+ return fm;
}
-Paper_def*
-unsmob_paper (SCM x)
+/* 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 dynamic_cast<Paper_def*> (unsmob_music_output_def (x));
+ SCM new_pap = Lily::scale_layout (o->self_scm (), scm_from_double (amount));
+
+ o = unsmob<Output_def> (new_pap);
+ o->protect ();
+ return o;
}
-
+
projects / lilypond.git / blobdiff