/*
- 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 "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 ()
+Real
+output_scale (Output_def *od)
{
- /* Do not remove this statement, scm_make_hash_table may trigger GC. */
- scaled_fonts_ = SCM_EOL;
- scaled_fonts_ = scm_c_make_hash_table (11);
+ 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)
{
- /* Do not remove this statement, scm_make_hash_table may trigger GC. */
- scaled_fonts_ = SCM_EOL;
- scaled_fonts_ = scm_c_make_hash_table (11);
+ 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;
}
-Paper_def::~Paper_def ()
+SCM
+get_pango_font_table (Output_def *def)
{
+ 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;
}
-void
-Paper_def::derived_mark ()
+/* TODO: should add nesting for Output_def here too. */
+Font_metric *
+find_scaled_font (Output_def *mod, Font_metric *f, Real m)
{
- scm_gc_mark (scaled_fonts_);
-}
+ if (mod->parent_)
+ return find_scaled_font (mod->parent_, f, m);
-Real
-Paper_def::get_dimension (SCM s) const
-{
- SCM val = lookup_variable (s);
- SCM scale = lookup_variable (ly_symbol2scm ("outputscale"));
-
- Real sc = ly_scm2double (scale);
- return ly_scm2double (val) / sc;
-}
+ Real lookup_mag = m / output_scale (mod);
-/* 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
-{
- Real lw = get_dimension (ly_symbol2scm ("linewidth"));
- Real ind = n? 0.0:get_dimension (ly_symbol2scm ("indent"));
+ 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));
- return Interval (ind, lw);
-}
+ 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));
- return new Paper_outputter (outname);
+ 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);
}
-Font_metric*
-Paper_def::find_scaled_font (Font_metric *f, Real m, SCM input_enc_name)
+Font_metric *
+find_pango_font (Output_def *layout, SCM descr, Real factor)
{
- SCM sizes = scm_hashq_ref (scaled_fonts_, f->self_scm (), SCM_BOOL_F);
- if (sizes != SCM_BOOL_F)
- {
- SCM met = scm_assoc (scm_make_real (m), sizes);
- if (ly_c_pair_p (met))
- return unsmob_metrics (ly_cdr (met));
- }
- else
- sizes = SCM_EOL;
-
- /* Hmm. We're chaining font - metrics. Should consider whether to
- merge virtual-font and scaled_font. */
- SCM val = SCM_EOL;
- if (Virtual_font_metric * vf = dynamic_cast<Virtual_font_metric*> (f))
- {
- /* For fontify_atom (), the magnification and name must be known
- at the same time. That's impossible for
-
- Scaled (Virtual_font (Font1,Font2))
-
- so we replace by
-
- Virtual_font (Scaled (Font1), Scaled (Font2)) */
- SCM lst = SCM_EOL;
- SCM *t = &lst;
- for (SCM s = vf->get_font_list (); ly_c_pair_p (s); s = ly_cdr (s))
- {
- Font_metric *scaled = find_scaled_font (unsmob_metrics (ly_car (s)),
- m, input_enc_name);
- *t = scm_cons (scaled->self_scm (), SCM_EOL);
- t = SCM_CDRLOC(*t);
- }
-
- vf = new Virtual_font_metric (lst);
- val = vf->self_scm ();
- }
- else
- {
- SCM scale_var = ly_module_lookup (scope_, ly_symbol2scm ("outputscale"));
-
- if (!ly_c_symbol_p (input_enc_name))
- {
- SCM var = ly_module_lookup (scope_, ly_symbol2scm ("inputencoding"));
- input_enc_name = scm_variable_ref (var);
- }
- m /= ly_scm2double (scm_variable_ref (scale_var));
- val = Modified_font_metric::make_scaled_font_metric (input_enc_name,
- f, m);
- }
+ if (layout->parent_)
+ return find_pango_font (layout->parent_, descr, factor);
- sizes = scm_acons (scm_make_real (m), val, sizes);
- scm_gc_unprotect_object (val);
- scm_hashq_set_x (scaled_fonts_, f->self_scm (), sizes);
- return unsmob_metrics (val);
-}
+ 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));
+ PangoFontDescription *description
+ = pango_font_description_from_string (scm_i_string_chars (descr));
-/* Return alist to translate internally used fonts back to real-world
- coordinates. */
-SCM
-Paper_def::font_descriptions () const
-{
- SCM func = ly_scheme_function ("hash-table->alist");
+ pango_font_description_set_size
+ (description,
+ gint (my_round (factor * pango_font_description_get_size (description))));
- SCM l = SCM_EOL;
- for (SCM s = scm_call_1 (func, scaled_fonts_); ly_c_pair_p (s); s = ly_cdr (s))
- {
- SCM entry = ly_car (s);
- for (SCM t = ly_cdr (entry); ly_c_pair_p (t); t = ly_cdr (t))
- {
- Font_metric *fm= unsmob_metrics (ly_cdar (t));
-
- if (dynamic_cast<Modified_font_metric*> (fm))
- l = scm_cons (fm->self_scm (), l);
- }
- }
- return l;
-}
+ Font_metric *fm = all_fonts_global->find_pango_font (description,
+ output_scale (layout));
-Paper_def*
-unsmob_paper (SCM x)
-{
- return dynamic_cast<Paper_def*> (unsmob_music_output_def (x));
+ pango_font_description_free (description);
+
+ sizes = scm_acons (size_key, fm->self_scm (), sizes);
+ scm_hash_set_x (table, descr, sizes);
+
+ return fm;
}
-
-LY_DEFINE (ly_paper_def_p, "ly:paper-def?",
- 1, 0, 0, (SCM def),
- "Is @var{def} a paper definition?")
+/* 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)
{
- Paper_def *op = dynamic_cast<Paper_def*> (unsmob_music_output_def (def));
+ SCM new_pap = Lily::scale_layout (o->self_scm (), scm_from_double (amount));
- bool pap = op;
- return ly_bool2scm (pap);
+ o = unsmob<Output_def> (new_pap);
+ o->protect ();
+ return o;
}
+
projects / lilypond.git / blobdiff