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- /* tex-glyph.h: look for a TeX glyph font (GF or PK).
-
- Copyright (C) 1993 Karl Berry.
-
- This program 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 2, or (at your option)
- any later version.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifndef KPATHSEA_TEX_GLYPH_H
- #define KPATHSEA_TEX_GLYPH_H
-
- #include <kpathsea/tex-file.h>
-
-
- /* This type describes the origination 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 /* : wasn't found, but the fallback font was */
- } kpse_glyph_source_type;
-
-
- typedef struct
- {
- 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 try
- the resolutions in `kpse_fallback_sizes', then within the tolerance
- of each of those. Then if FONT_NAME is an alias defined in a
- texfonts.map do all the above for its real name. 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 string kpse_find_glyph P4H(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)
-
-
- /* 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 boolean kpse_bitmap_tolerance P2H(double dpi1, double dpi2);
-
- #endif /* not KPATHSEA_TEX_GLYPH_H */
-