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authorKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
committerKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
commitad547a6b5986815fda458221149728d9d9ab1d87 (patch)
tree16296910eb3eca724371474ea9aea3994dc69614 /Build/source/texk/kpathsea/tex-glyph.h
parent947b43de3dd21d58ccc2ffadefc4441ea1c2a813 (diff)
restore Build,TODO from r57911
git-svn-id: svn://tug.org/texlive/trunk@57915 c570f23f-e606-0410-a88d-b1316a301751
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+/* tex-glyph.h: look for a TeX glyph font (GF or PK).
+
+ Copyright 1993, 2008, 2009, 2011, 2018 Karl Berry.
+ Copyright 1999, 2005 Olaf Weber.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this library; if not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef KPATHSEA_TEX_GLYPH_H
+#define KPATHSEA_TEX_GLYPH_H
+
+#include <kpathsea/tex-file.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* This type describes the origin of a glyph font. */
+
+typedef enum
+{
+ kpse_glyph_source_normal, /* the searched-for font: already existed */
+ kpse_glyph_source_alias, /* : was an alias for an existing file */
+ kpse_glyph_source_maketex, /* : was created on the fly */
+ kpse_glyph_source_fallback_res, /* : found at fallback resolutions */
+ kpse_glyph_source_fallback /* : wasn't found, but the fallback font was */
+} kpse_glyph_source_type;
+
+
+typedef struct
+{
+ const_string name; /* font name found */
+ unsigned dpi; /* size found, for glyphs */
+ kpse_file_format_type format; /* glyph format found */
+ kpse_glyph_source_type source; /* where we found it */
+} kpse_glyph_file_type;
+
+#define KPSE_GLYPH_FILE_NAME(f) ((f).name)
+#define KPSE_GLYPH_FILE_DPI(f) ((f).dpi)
+#define KPSE_GLYPH_FILE_FORMAT(f) ((f).format)
+#define KPSE_GLYPH_FILE_SOURCE(f) ((f).source)
+
+
+/* Search first for the font named FONT_NAME at resolution DPI in the
+ glyph format FORMAT (see `try_size' for details of format searching).
+ Then try resolutions within KPSE_BITMAP_TOLERANCE of DPI. Then if
+ FONT_NAME is an alias defined in a texfonts.map do all the above for
+ its real name. If not an alias, try creating it on the fly with
+ mktexpk. Then try the resolutions in `kpse_fallback_sizes', then
+ within the tolerance of each of those. Then try the above for
+ kpse_fallback_name. Then fail. Return either the filename found, or
+ NULL. Also return information about the file found in
+ *GLYPH_FILE. */
+extern KPSEDLL string kpathsea_find_glyph (kpathsea kpse,
+ const_string font_name, unsigned dpi,
+ kpse_file_format_type format,
+ kpse_glyph_file_type *glyph_file);
+
+
+/* Defines how far away a pixel file can be found from its stated size.
+ The DVI standard says any resolution within 0.2% of the stated size
+ is ok, but we are more forgiving. */
+#define KPSE_BITMAP_TOLERANCE(r) ((r) / 500.0 + 1)
+
+/* Check whether DPI1 is within KPSE_BITMAP_TOLERANCE of DPI2. */
+extern KPSEDLL boolean kpathsea_bitmap_tolerance (kpathsea kpse,
+ double dpi1, double dpi2);
+
+
+#if defined (KPSE_COMPAT_API)
+extern KPSEDLL string kpse_find_glyph (const_string font_name, unsigned dpi,
+ kpse_file_format_type format,
+ kpse_glyph_file_type *glyph_file);
+
+/* Look for a specific format only. */
+#define kpse_find_pk(font_name, dpi, glyph_file) \
+ kpse_find_glyph (font_name, dpi, kpse_pk_format, glyph_file)
+#define kpse_find_gf(font_name, dpi, glyph_file) \
+ kpse_find_glyph (font_name, dpi, kpse_gf_format, glyph_file)
+
+extern KPSEDLL boolean kpse_bitmap_tolerance (double dpi1, double dpi2);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not KPATHSEA_TEX_GLYPH_H */