thirdparty/freetype-2.3.12/src/pcf/pcf.h

   1 /*  pcf.h
   2
   3   FreeType font driver for pcf fonts
   4
   5   Copyright (C) 2000, 2001, 2002, 2003, 2006 by
   6   Francesco Zappa Nardelli
   7
   8 Permission is hereby granted, free of charge, to any person obtaining a copy
   9 of this software and associated documentation files (the "Software"), to deal
  10 in the Software without restriction, including without limitation the rights
  11 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 copies of the Software, and to permit persons to whom the Software is
  13 furnished to do so, subject to the following conditions:
  14
  15 The above copyright notice and this permission notice shall be included in
  16 all copies or substantial portions of the Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  21 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24 THE SOFTWARE.
  25 */
  26
  27
  28 #ifndef __PCF_H__
  29 #define __PCF_H__
  30
  31
  32 #include <ft2build.h>
  33 #include FT_INTERNAL_DRIVER_H
  34 #include FT_INTERNAL_STREAM_H
  35
  36
  37 FT_BEGIN_HEADER
  38
  39   typedef struct  PCF_TableRec_
  40   {
  41     FT_ULong  type;
  42     FT_ULong  format;
  43     FT_ULong  size;
  44     FT_ULong  offset;
  45
  46   } PCF_TableRec, *PCF_Table;
  47
  48
  49   typedef struct  PCF_TocRec_
  50   {
  51     FT_ULong   version;
  52     FT_ULong   count;
  53     PCF_Table  tables;
  54
  55   } PCF_TocRec, *PCF_Toc;
  56
  57
  58   typedef struct  PCF_ParsePropertyRec_
  59   {
  60     FT_Long  name;
  61     FT_Byte  isString;
  62     FT_Long  value;
  63
  64   } PCF_ParsePropertyRec, *PCF_ParseProperty;
  65
  66
  67   typedef struct  PCF_PropertyRec_
  68   {
  69     FT_String*  name;
  70     FT_Byte     isString;
  71
  72     union
  73     {
  74       FT_String*  atom;
  75       FT_Long     l;
  76       FT_ULong    ul;
  77
  78     } value;
  79
  80   } PCF_PropertyRec, *PCF_Property;
  81
  82
  83   typedef struct  PCF_Compressed_MetricRec_
  84   {
  85     FT_Byte  leftSideBearing;
  86     FT_Byte  rightSideBearing;
  87     FT_Byte  characterWidth;
  88     FT_Byte  ascent;
  89     FT_Byte  descent;
  90
  91   } PCF_Compressed_MetricRec, *PCF_Compressed_Metric;
  92
  93
  94   typedef struct  PCF_MetricRec_
  95   {
  96     FT_Short  leftSideBearing;
  97     FT_Short  rightSideBearing;
  98     FT_Short  characterWidth;
  99     FT_Short  ascent;
 100     FT_Short  descent;
 101     FT_Short  attributes;
 102     FT_ULong  bits;
 103
 104   } PCF_MetricRec, *PCF_Metric;
 105
 106
 107   typedef struct  PCF_AccelRec_
 108   {
 109     FT_Byte        noOverlap;
 110     FT_Byte        constantMetrics;
 111     FT_Byte        terminalFont;
 112     FT_Byte        constantWidth;
 113     FT_Byte        inkInside;
 114     FT_Byte        inkMetrics;
 115     FT_Byte        drawDirection;
 116     FT_Long        fontAscent;
 117     FT_Long        fontDescent;
 118     FT_Long        maxOverlap;
 119     PCF_MetricRec  minbounds;
 120     PCF_MetricRec  maxbounds;
 121     PCF_MetricRec  ink_minbounds;
 122     PCF_MetricRec  ink_maxbounds;
 123
 124   } PCF_AccelRec, *PCF_Accel;
 125
 126
 127   typedef struct  PCF_EncodingRec_
 128   {
 129     FT_Long    enc;
 130     FT_UShort  glyph;
 131
 132   } PCF_EncodingRec, *PCF_Encoding;
 133
 134
 135   typedef struct  PCF_FaceRec_
 136   {
 137     FT_FaceRec     root;
 138
 139     FT_StreamRec   gzip_stream;
 140     FT_Stream      gzip_source;
 141
 142     char*          charset_encoding;
 143     char*          charset_registry;
 144
 145     PCF_TocRec     toc;
 146     PCF_AccelRec   accel;
 147
 148     int            nprops;
 149     PCF_Property   properties;
 150
 151     FT_Long        nmetrics;
 152     PCF_Metric     metrics;
 153     FT_Long        nencodings;
 154     PCF_Encoding   encodings;
 155
 156     FT_Short       defaultChar;
 157
 158     FT_ULong       bitmapsFormat;
 159
 160     FT_CharMap     charmap_handle;
 161     FT_CharMapRec  charmap;  /* a single charmap per face */
 162
 163   } PCF_FaceRec, *PCF_Face;
 164
 165
 166   /* macros for pcf font format */
 167
 168 #define LSBFirst  0
 169 #define MSBFirst  1
 170
 171 #define PCF_FILE_VERSION        ( ( 'p' << 24 ) | \
 172                                   ( 'c' << 16 ) | \
 173                                   ( 'f' <<  8 ) | 1 )
 174 #define PCF_FORMAT_MASK         0xFFFFFF00UL
 175
 176 #define PCF_DEFAULT_FORMAT      0x00000000UL
 177 #define PCF_INKBOUNDS           0x00000200UL
 178 #define PCF_ACCEL_W_INKBOUNDS   0x00000100UL
 179 #define PCF_COMPRESSED_METRICS  0x00000100UL
 180
 181 #define PCF_FORMAT_MATCH( a, b ) \
 182           ( ( (a) & PCF_FORMAT_MASK ) == ( (b) & PCF_FORMAT_MASK ) )
 183
 184 #define PCF_GLYPH_PAD_MASK  ( 3 << 0 )
 185 #define PCF_BYTE_MASK       ( 1 << 2 )
 186 #define PCF_BIT_MASK        ( 1 << 3 )
 187 #define PCF_SCAN_UNIT_MASK  ( 3 << 4 )
 188
 189 #define PCF_BYTE_ORDER( f ) \
 190           ( ( (f) & PCF_BYTE_MASK ) ? MSBFirst : LSBFirst )
 191 #define PCF_BIT_ORDER( f ) \
 192           ( ( (f) & PCF_BIT_MASK ) ? MSBFirst : LSBFirst )
 193 #define PCF_GLYPH_PAD_INDEX( f ) \
 194           ( (f) & PCF_GLYPH_PAD_MASK )
 195 #define PCF_GLYPH_PAD( f ) \
 196           ( 1 << PCF_GLYPH_PAD_INDEX( f ) )
 197 #define PCF_SCAN_UNIT_INDEX( f ) \
 198           ( ( (f) & PCF_SCAN_UNIT_MASK ) >> 4 )
 199 #define PCF_SCAN_UNIT( f ) \
 200           ( 1 << PCF_SCAN_UNIT_INDEX( f ) )
 201 #define PCF_FORMAT_BITS( f )             \
 202           ( (f) & ( PCF_GLYPH_PAD_MASK | \
 203                     PCF_BYTE_MASK      | \
 204                     PCF_BIT_MASK       | \
 205                     PCF_SCAN_UNIT_MASK ) )
 206
 207 #define PCF_SIZE_TO_INDEX( s )  ( (s) == 4 ? 2 : (s) == 2 ? 1 : 0 )
 208 #define PCF_INDEX_TO_SIZE( b )  ( 1 << b )
 209
 210 #define PCF_FORMAT( bit, byte, glyph, scan )          \
 211           ( ( PCF_SIZE_TO_INDEX( scan )      << 4 ) | \
 212             ( ( (bit)  == MSBFirst ? 1 : 0 ) << 3 ) | \
 213             ( ( (byte) == MSBFirst ? 1 : 0 ) << 2 ) | \
 214             ( PCF_SIZE_TO_INDEX( glyph )     << 0 ) )
 215
 216 #define PCF_PROPERTIES        ( 1 << 0 )
 217 #define PCF_ACCELERATORS      ( 1 << 1 )
 218 #define PCF_METRICS           ( 1 << 2 )
 219 #define PCF_BITMAPS           ( 1 << 3 )
 220 #define PCF_INK_METRICS       ( 1 << 4 )
 221 #define PCF_BDF_ENCODINGS     ( 1 << 5 )
 222 #define PCF_SWIDTHS           ( 1 << 6 )
 223 #define PCF_GLYPH_NAMES       ( 1 << 7 )
 224 #define PCF_BDF_ACCELERATORS  ( 1 << 8 )
 225
 226 #define GLYPHPADOPTIONS  4 /* I'm not sure about this */
 227
 228   FT_LOCAL( FT_Error )
 229   pcf_load_font( FT_Stream,
 230                  PCF_Face );
 231
 232 FT_END_HEADER
 233
 234 #endif /* __PCF_H__ */
 235
 236
 237 /* END */