-/*
- font-select.cc -- implement property -> font_metric routines.
+/*
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2003--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2003--2004 Han-Wen Nienhuys <hanwen@xs4all.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 "book-paper-def.hh"
+#include "dimensions.hh"
#include "all-font-metrics.hh"
#include "output-def.hh"
#include "font-interface.hh"
#include "warn.hh"
+#include "pango-font.hh"
+#include "main.hh"
-LY_DEFINE (ly_paper_get_font, "ly:paper-get-font", 2, 0, 0,
- (SCM paper, SCM chain),
-
- "Return a font metric satisfying the font-qualifiers "
- "in the alist chain @var{chain}.\n"
- "(An alist chain is a list of alists, containing grob properties).\n")
-{
- Output_def *pap = unsmob_output_def (paper);
- SCM_ASSERT_TYPE (pap, paper, SCM_ARG1, __FUNCTION__, "paper definition");
-
- Font_metric *fm = select_font (pap, chain);
- return fm->self_scm ();
-}
-
-LY_DEFINE (ly_paper_get_number, "ly:paper-get-number", 2, 0, 0,
- (SCM paper, SCM name),
- "Return the paper variable @var{name}.")
-{
- Output_def *pap = unsmob_output_def (paper);
- SCM_ASSERT_TYPE (pap, paper, SCM_ARG1, __FUNCTION__, "paper definition");
- return scm_make_real (pap->get_dimension (name));
-}
-
-bool
-wild_compare (SCM field_val, SCM val)
-{
- return (val == SCM_BOOL_F || field_val == ly_symbol2scm ("*") || field_val == val);
-}
-
-
-/*
- TODO: this triggers a great number of font-loads (feta11 upto
- parmesan23). We could make a Delayed_load_font_metric for which the
- design size is specced in advance.
- */
-Font_metric*
-get_font_by_design_size (Output_def* paper, Real requested,
- SCM font_vector, SCM input_encoding_name)
+Font_metric *
+get_font_by_design_size (Output_def *layout, Real requested,
+ SCM font_vector)
{
- int n = SCM_VECTOR_LENGTH (font_vector);
+ int n = scm_c_vector_length (font_vector);
Real size = 1e6;
Real last_size = -1e6;
int i = 0;
-
+
+ SCM pango_description_string = SCM_EOL;
+ SCM last_pango_description_string = SCM_EOL;
for (; i < n; i++)
{
- SCM entry = SCM_VECTOR_REF (font_vector, i);
- Font_metric *fm = unsmob_metrics (scm_force (entry));
- size = fm->design_size ();
-
+ SCM entry = scm_c_vector_ref (font_vector, i);
+
+ if (scm_promise_p (entry) == SCM_BOOL_T)
+ {
+ Font_metric *fm = Font_metric::unsmob (scm_force (entry));
+ size = fm->design_size ();
+ }
+#if HAVE_PANGO_FT2
+ else if (scm_is_pair (entry)
+ && scm_is_number (scm_car (entry))
+ && scm_is_string (scm_cdr (entry)))
+ {
+ size = scm_to_double (scm_car (entry));
+ pango_description_string
+ = scm_cdr (entry);
+ }
+#endif
+
if (size > requested)
- break ;
- last_size = size;
+ break;
+ last_size = size;
+ last_pango_description_string = pango_description_string;
}
if (i == n)
- {
- i = n-1;
- }
+ i = n - 1;
else if (i > 0)
{
if ((requested / last_size) < (size / requested))
- {
- i -- ;
- size = last_size;
- }
+ {
+ i--;
+ size = last_size;
+ pango_description_string = last_pango_description_string;
+ }
}
- Font_metric *fm = unsmob_metrics (scm_force (SCM_VECTOR_REF (font_vector, i)));
- return dynamic_cast<Book_output_def*> (paper->parent_)
- // ugh.
- ->find_scaled_font (fm, requested / size, input_encoding_name);
+ Font_metric *fm = 0;
+ if (scm_is_string (pango_description_string))
+ {
+#if HAVE_PANGO_FT2
+ return find_pango_font (layout,
+ pango_description_string,
+ requested / size);
+#else
+ error ("Trying to retrieve pango font without HAVE_PANGO_FT2.");
+#endif
+ }
+ else
+ fm = Font_metric::unsmob (scm_force (scm_c_vector_ref (font_vector, i)));
+ return find_scaled_font (layout, fm, requested / size);
}
-
-Font_metric*
-get_font_by_mag_step (Output_def* paper, Real requested_step,
- SCM font_vector, Real default_size, SCM input_encoding_name)
+Font_metric *
+get_font_by_mag_step (Output_def *layout, Real requested_step,
+ SCM font_vector, Real default_size)
{
- return get_font_by_design_size (paper,
- default_size * pow (2.0, requested_step / 6.0),
- font_vector, input_encoding_name);
+ return get_font_by_design_size (layout, default_size
+ * pow (2.0, requested_step / 6.0),
+ font_vector);
}
-
-
SCM
properties_to_font_size_family (SCM fonts, SCM alist_chain)
{
- return scm_call_2 (ly_scheme_function ("lookup-font"), fonts, alist_chain);
+ return scm_call_2 (ly_lily_module_constant ("lookup-font"), fonts,
+ alist_chain);
}
-
Font_metric *
-select_encoded_font (Output_def *paper, SCM chain, SCM encoding_name)
+select_encoded_font (Output_def *layout, SCM chain)
{
- SCM name = ly_assoc_chain (ly_symbol2scm ("font-name"), chain);
-
- if (!ly_c_pair_p (name) || !ly_c_string_p (ly_cdr (name)))
+ SCM name = ly_chain_assoc_get (ly_symbol2scm ("font-name"), chain, SCM_BOOL_F);
+
+ if (!scm_is_string (name))
{
- SCM fonts = paper->lookup_variable (ly_symbol2scm ("fonts"));
+ SCM fonts = layout->lookup_variable (ly_symbol2scm ("fonts"));
name = properties_to_font_size_family (fonts, chain);
}
+
+#if HAVE_PANGO_FT2
+ if (scm_is_string (name))
+ return select_pango_font (layout, chain);
else
- name = ly_cdr (name);
+#endif
+ if (scm_is_true (scm_instance_p (name)))
+ {
+ SCM base_size = scm_slot_ref (name, ly_symbol2scm ("default-size"));
+ SCM vec = scm_slot_ref (name, ly_symbol2scm ("size-vector"));
- if (ly_c_string_p (name))
- {
- SCM mag = ly_assoc_chain (ly_symbol2scm ("font-magnification"), chain);
-
- Real rmag = ly_c_pair_p (mag) ? robust_scm2double (ly_cdr (mag), 1.0) : 1;
-
- Font_metric * fm = all_fonts_global->find_font (ly_scm2string (name));
-
-
- return dynamic_cast<Book_output_def*> (paper->parent_)
- ->find_scaled_font (fm, rmag, encoding_name);
- }
- else if (scm_instance_p (name))
- {
- SCM base_size = scm_slot_ref (name, ly_symbol2scm ("default-size"));
- SCM vec = scm_slot_ref (name, ly_symbol2scm ("size-vector"));
-
- SCM font_size = ly_assoc_chain (ly_symbol2scm ("font-size"), chain);
- Real req = 0.0;
- if (ly_c_pair_p (font_size))
- req = ly_scm2double (ly_cdr (font_size));
-
- return get_font_by_mag_step (paper, req,
- vec, ly_scm2double (base_size), encoding_name);
- }
+ Real req = robust_scm2double (ly_chain_assoc_get (ly_symbol2scm ("font-size"), chain, SCM_BOOL_F),
+ 0.0);
- assert (0);
+ return get_font_by_mag_step (layout, req, vec,
+ scm_to_double (base_size));
+ }
+ assert (0);
return 0;
}
Font_metric *
-select_font (Output_def *paper, SCM chain)
+select_font (Output_def *layout, SCM chain)
{
- return select_encoded_font (paper, chain, SCM_EOL);
+ return select_encoded_font (layout, chain);
}
projects / lilypond.git / blobdiff