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bdf.h
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00001 /* 00002 * Copyright 2000 Computing Research Labs, New Mexico State University 00003 * Copyright 2001, 2002, 2003, 2004 Francesco Zappa Nardelli 00004 * 00005 * Permission is hereby granted, free of charge, to any person obtaining a 00006 * copy of this software and associated documentation files (the "Software"), 00007 * to deal in the Software without restriction, including without limitation 00008 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 00009 * and/or sell copies of the Software, and to permit persons to whom the 00010 * Software is furnished to do so, subject to the following conditions: 00011 * 00012 * The above copyright notice and this permission notice shall be included in 00013 * all copies or substantial portions of the Software. 00014 * 00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 00018 * THE COMPUTING RESEARCH LAB OR NEW MEXICO STATE UNIVERSITY BE LIABLE FOR ANY 00019 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT 00020 * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 00021 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00022 */ 00023 00024 00025 #ifndef __BDF_H__ 00026 #define __BDF_H__ 00027 00028 00029 /* 00030 * Based on bdf.h,v 1.16 2000/03/16 20:08:51 mleisher 00031 */ 00032 00033 #include <ft2build.h> 00034 #include FT_INTERNAL_OBJECTS_H 00035 #include FT_INTERNAL_STREAM_H 00036 00037 00038 FT_BEGIN_HEADER 00039 00040 00041 /* Imported from bdfP.h */ 00042 00043 #define _bdf_glyph_modified( map, e ) \ 00044 ( (map)[(e) >> 5] & ( 1 << ( (e) & 31 ) ) ) 00045 #define _bdf_set_glyph_modified( map, e ) \ 00046 ( (map)[(e) >> 5] |= ( 1 << ( (e) & 31 ) ) ) 00047 #define _bdf_clear_glyph_modified( map, e ) \ 00048 ( (map)[(e) >> 5] &= ~( 1 << ( (e) & 31 ) ) ) 00049 00050 /* end of bdfP.h */ 00051 00052 00053 /*************************************************************************/ 00054 /* */ 00055 /* BDF font options macros and types. */ 00056 /* */ 00057 /*************************************************************************/ 00058 00059 00060 #define BDF_CORRECT_METRICS 0x01 /* Correct invalid metrics when loading. */ 00061 #define BDF_KEEP_COMMENTS 0x02 /* Preserve the font comments. */ 00062 #define BDF_KEEP_UNENCODED 0x04 /* Keep the unencoded glyphs. */ 00063 #define BDF_PROPORTIONAL 0x08 /* Font has proportional spacing. */ 00064 #define BDF_MONOWIDTH 0x10 /* Font has mono width. */ 00065 #define BDF_CHARCELL 0x20 /* Font has charcell spacing. */ 00066 00067 #define BDF_ALL_SPACING ( BDF_PROPORTIONAL | \ 00068 BDF_MONOWIDTH | \ 00069 BDF_CHARCELL ) 00070 00071 #define BDF_DEFAULT_LOAD_OPTIONS ( BDF_CORRECT_METRICS | \ 00072 BDF_KEEP_COMMENTS | \ 00073 BDF_KEEP_UNENCODED | \ 00074 BDF_PROPORTIONAL ) 00075 00076 00077 typedef struct bdf_options_t_ 00078 { 00079 int correct_metrics; 00080 int keep_unencoded; 00081 int keep_comments; 00082 int font_spacing; 00083 00084 } bdf_options_t; 00085 00086 00087 /* Callback function type for unknown configuration options. */ 00088 typedef int 00089 (*bdf_options_callback_t)( bdf_options_t* opts, 00090 char** params, 00091 unsigned long nparams, 00092 void* client_data ); 00093 00094 00095 /*************************************************************************/ 00096 /* */ 00097 /* BDF font property macros and types. */ 00098 /* */ 00099 /*************************************************************************/ 00100 00101 00102 #define BDF_ATOM 1 00103 #define BDF_INTEGER 2 00104 #define BDF_CARDINAL 3 00105 00106 00107 /* This structure represents a particular property of a font. */ 00108 /* There are a set of defaults and each font has their own. */ 00109 typedef struct bdf_property_t_ 00110 { 00111 char* name; /* Name of the property. */ 00112 int format; /* Format of the property. */ 00113 int builtin; /* A builtin property. */ 00114 union 00115 { 00116 char* atom; 00117 long l; 00118 unsigned long ul; 00119 00120 } value; /* Value of the property. */ 00121 00122 } bdf_property_t; 00123 00124 00125 /*************************************************************************/ 00126 /* */ 00127 /* BDF font metric and glyph types. */ 00128 /* */ 00129 /*************************************************************************/ 00130 00131 00132 typedef struct bdf_bbx_t_ 00133 { 00134 unsigned short width; 00135 unsigned short height; 00136 00137 short x_offset; 00138 short y_offset; 00139 00140 short ascent; 00141 short descent; 00142 00143 } bdf_bbx_t; 00144 00145 00146 typedef struct bdf_glyph_t_ 00147 { 00148 char* name; /* Glyph name. */ 00149 long encoding; /* Glyph encoding. */ 00150 unsigned short swidth; /* Scalable width. */ 00151 unsigned short dwidth; /* Device width. */ 00152 bdf_bbx_t bbx; /* Glyph bounding box. */ 00153 unsigned char* bitmap; /* Glyph bitmap. */ 00154 unsigned long bpr; /* Number of bytes used per row. */ 00155 unsigned short bytes; /* Number of bytes used for the bitmap. */ 00156 00157 } bdf_glyph_t; 00158 00159 00160 typedef struct _hashnode_ 00161 { 00162 const char* key; 00163 size_t data; 00164 00165 } _hashnode, *hashnode; 00166 00167 00168 typedef struct hashtable_ 00169 { 00170 int limit; 00171 int size; 00172 int used; 00173 hashnode* table; 00174 00175 } hashtable; 00176 00177 00178 typedef struct bdf_glyphlist_t_ 00179 { 00180 unsigned short pad; /* Pad to 4-byte boundary. */ 00181 unsigned short bpp; /* Bits per pixel. */ 00182 long start; /* Beginning encoding value of glyphs. */ 00183 long end; /* Ending encoding value of glyphs. */ 00184 bdf_glyph_t* glyphs; /* Glyphs themselves. */ 00185 unsigned long glyphs_size; /* Glyph structures allocated. */ 00186 unsigned long glyphs_used; /* Glyph structures used. */ 00187 bdf_bbx_t bbx; /* Overall bounding box of glyphs. */ 00188 00189 } bdf_glyphlist_t; 00190 00191 00192 typedef struct bdf_font_t_ 00193 { 00194 char* name; /* Name of the font. */ 00195 bdf_bbx_t bbx; /* Font bounding box. */ 00196 00197 long point_size; /* Point size of the font. */ 00198 unsigned long resolution_x; /* Font horizontal resolution. */ 00199 unsigned long resolution_y; /* Font vertical resolution. */ 00200 00201 int spacing; /* Font spacing value. */ 00202 00203 unsigned short monowidth; /* Logical width for monowidth font. */ 00204 00205 long default_char; /* Encoding of the default glyph. */ 00206 00207 long font_ascent; /* Font ascent. */ 00208 long font_descent; /* Font descent. */ 00209 00210 unsigned long glyphs_size; /* Glyph structures allocated. */ 00211 unsigned long glyphs_used; /* Glyph structures used. */ 00212 bdf_glyph_t* glyphs; /* Glyphs themselves. */ 00213 00214 unsigned long unencoded_size; /* Unencoded glyph struct. allocated. */ 00215 unsigned long unencoded_used; /* Unencoded glyph struct. used. */ 00216 bdf_glyph_t* unencoded; /* Unencoded glyphs themselves. */ 00217 00218 unsigned long props_size; /* Font properties allocated. */ 00219 unsigned long props_used; /* Font properties used. */ 00220 bdf_property_t* props; /* Font properties themselves. */ 00221 00222 char* comments; /* Font comments. */ 00223 unsigned long comments_len; /* Length of comment string. */ 00224 00225 bdf_glyphlist_t overflow; /* Storage used for glyph insertion. */ 00226 00227 void* internal; /* Internal data for the font. */ 00228 00229 unsigned long nmod[2048]; /* Bitmap indicating modified glyphs. */ 00230 unsigned long umod[2048]; /* Bitmap indicating modified */ 00231 /* unencoded glyphs. */ 00232 unsigned short modified; /* Boolean indicating font modified. */ 00233 unsigned short bpp; /* Bits per pixel. */ 00234 00235 FT_Memory memory; 00236 00237 bdf_property_t* user_props; 00238 unsigned long nuser_props; 00239 hashtable proptbl; 00240 00241 } bdf_font_t; 00242 00243 00244 /*************************************************************************/ 00245 /* */ 00246 /* Types for load/save callbacks. */ 00247 /* */ 00248 /*************************************************************************/ 00249 00250 00251 /* Error codes. */ 00252 #define BDF_MISSING_START -1 00253 #define BDF_MISSING_FONTNAME -2 00254 #define BDF_MISSING_SIZE -3 00255 #define BDF_MISSING_CHARS -4 00256 #define BDF_MISSING_STARTCHAR -5 00257 #define BDF_MISSING_ENCODING -6 00258 #define BDF_MISSING_BBX -7 00259 00260 #define BDF_OUT_OF_MEMORY -20 00261 00262 #define BDF_INVALID_LINE -100 00263 00264 00265 /*************************************************************************/ 00266 /* */ 00267 /* BDF font API. */ 00268 /* */ 00269 /*************************************************************************/ 00270 00271 FT_LOCAL( FT_Error ) 00272 bdf_load_font( FT_Stream stream, 00273 FT_Memory memory, 00274 bdf_options_t* opts, 00275 bdf_font_t* *font ); 00276 00277 FT_LOCAL( void ) 00278 bdf_free_font( bdf_font_t* font ); 00279 00280 FT_LOCAL( bdf_property_t * ) 00281 bdf_get_property( char* name, 00282 bdf_font_t* font ); 00283 00284 FT_LOCAL( bdf_property_t * ) 00285 bdf_get_font_property( bdf_font_t* font, 00286 const char* name ); 00287 00288 00289 FT_END_HEADER 00290 00291 00292 #endif /* __BDF_H__ */ 00293 00294 00295 /* END */
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