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1 /* tex-glyph.h: look for a TeX glyph font (GF or PK). |
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2 |
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3 Copyright (C) 1993 Karl Berry. |
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4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Library General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2 of the License, or (at your option) any later version. |
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9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Library General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Library General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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18 |
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19 #ifndef KPATHSEA_TEX_GLYPH_H |
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20 #define KPATHSEA_TEX_GLYPH_H |
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21 |
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22 #include <kpathsea/tex-file.h> |
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23 |
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24 |
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25 /* This type describes the origination of a glyph font. */ |
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26 |
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27 typedef enum |
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28 { |
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29 kpse_glyph_source_normal, /* the searched-for font: already existed */ |
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30 kpse_glyph_source_alias, /* : was an alias for an existing file */ |
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31 kpse_glyph_source_maketex, /* : was created on the fly */ |
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32 kpse_glyph_source_fallback /* : wasn't found, but the fallback font was */ |
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33 } kpse_glyph_source_type; |
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34 |
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35 |
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36 typedef struct |
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37 { |
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38 string name; /* font name found */ |
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39 unsigned dpi; /* size found, for glyphs */ |
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40 kpse_file_format_type format; /* glyph format found */ |
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41 kpse_glyph_source_type source; /* where we found it */ |
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42 } kpse_glyph_file_type; |
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43 |
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44 #define KPSE_GLYPH_FILE_NAME(f) ((f).name) |
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45 #define KPSE_GLYPH_FILE_DPI(f) ((f).dpi) |
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46 #define KPSE_GLYPH_FILE_FORMAT(f) ((f).format) |
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47 #define KPSE_GLYPH_FILE_SOURCE(f) ((f).source) |
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48 |
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49 |
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50 /* Search first for the font named FONT_NAME at resolution DPI in the |
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51 glyph format FORMAT (see `try_size' for details of format searching). |
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52 Then try resolutions within KPSE_BITMAP_TOLERANCE of DPI. Then try |
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53 the resolutions in `kpse_fallback_sizes', then within the tolerance |
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54 of each of those. Then if FONT_NAME is an alias defined in a |
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55 texfonts.map do all the above for its real name. Then try the above |
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56 for kpse_fallback_name. Then fail. Return either the filename |
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57 found, or NULL. Also return information about the file found in |
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58 *GLYPH_FILE. */ |
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59 extern string kpse_find_glyph P4H(const_string font_name, unsigned dpi, |
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60 kpse_file_format_type format, |
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61 kpse_glyph_file_type *glyph_file); |
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62 |
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63 /* Look for a specific format only. */ |
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64 #define kpse_find_pk(font_name, dpi, glyph_file) \ |
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65 kpse_find_glyph (font_name, dpi, kpse_pk_format, glyph_file) |
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66 #define kpse_find_gf(font_name, dpi, glyph_file) \ |
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67 kpse_find_glyph (font_name, dpi, kpse_gf_format, glyph_file) |
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68 |
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69 |
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70 /* Defines how far away a pixel file can be found from its stated size. |
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71 The DVI standard says any resolution within 0.2% of the stated size |
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72 is ok, but we are more forgiving. */ |
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73 #define KPSE_BITMAP_TOLERANCE(r) ((r) / 500.0 + 1) |
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74 |
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75 /* Check whether DPI1 is within KPSE_BITMAP_TOLERANCE of DPI2. */ |
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76 extern boolean kpse_bitmap_tolerance P2H(double dpi1, double dpi2); |
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77 |
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78 #endif /* not KPATHSEA_TEX_GLYPH_H */ |
