1 | /* bdfdrivr.c |
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2 | |
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3 | FreeType font driver for bdf files |
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4 | |
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5 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by |
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6 | Francesco Zappa Nardelli |
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7 | |
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8 | Permission is hereby granted, free of charge, to any person obtaining a copy |
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9 | of this software and associated documentation files (the "Software"), to deal |
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10 | in the Software without restriction, including without limitation the rights |
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11 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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12 | copies of the Software, and to permit persons to whom the Software is |
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13 | furnished to do so, subject to the following conditions: |
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14 | |
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15 | The above copyright notice and this permission notice shall be included in |
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16 | all copies or substantial portions of the Software. |
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17 | |
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18 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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21 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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22 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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23 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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24 | THE SOFTWARE. |
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25 | */ |
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26 | |
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27 | #include <ft2build.h> |
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28 | |
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29 | #include FT_INTERNAL_DEBUG_H |
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30 | #include FT_INTERNAL_STREAM_H |
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31 | #include FT_INTERNAL_OBJECTS_H |
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32 | #include FT_BDF_H |
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33 | |
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34 | #include FT_SERVICE_BDF_H |
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35 | #include FT_SERVICE_XFREE86_NAME_H |
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36 | |
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37 | #include "bdf.h" |
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38 | #include "bdfdrivr.h" |
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39 | |
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40 | #include "bdferror.h" |
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41 | |
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42 | |
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43 | /*************************************************************************/ |
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44 | /* */ |
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45 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
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46 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
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47 | /* messages during execution. */ |
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48 | /* */ |
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49 | #undef FT_COMPONENT |
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50 | #define FT_COMPONENT trace_bdfdriver |
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51 | |
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52 | |
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53 | typedef struct BDF_CMapRec_ |
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54 | { |
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55 | FT_CMapRec cmap; |
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56 | FT_UInt num_encodings; |
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57 | BDF_encoding_el* encodings; |
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58 | |
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59 | } BDF_CMapRec, *BDF_CMap; |
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60 | |
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61 | |
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62 | FT_CALLBACK_DEF( FT_Error ) |
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63 | bdf_cmap_init( FT_CMap bdfcmap, |
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64 | FT_Pointer init_data ) |
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65 | { |
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66 | BDF_CMap cmap = (BDF_CMap)bdfcmap; |
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67 | BDF_Face face = (BDF_Face)FT_CMAP_FACE( cmap ); |
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68 | FT_UNUSED( init_data ); |
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69 | |
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70 | |
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71 | cmap->num_encodings = face->bdffont->glyphs_used; |
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72 | cmap->encodings = face->en_table; |
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73 | |
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74 | return BDF_Err_Ok; |
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75 | } |
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76 | |
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77 | |
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78 | FT_CALLBACK_DEF( void ) |
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79 | bdf_cmap_done( FT_CMap bdfcmap ) |
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80 | { |
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81 | BDF_CMap cmap = (BDF_CMap)bdfcmap; |
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82 | |
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83 | |
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84 | cmap->encodings = NULL; |
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85 | cmap->num_encodings = 0; |
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86 | } |
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87 | |
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88 | |
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89 | FT_CALLBACK_DEF( FT_UInt ) |
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90 | bdf_cmap_char_index( FT_CMap bdfcmap, |
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91 | FT_UInt32 charcode ) |
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92 | { |
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93 | BDF_CMap cmap = (BDF_CMap)bdfcmap; |
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94 | BDF_encoding_el* encodings = cmap->encodings; |
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95 | FT_UInt min, max, mid; |
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96 | FT_UInt result = 0; |
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97 | |
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98 | |
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99 | min = 0; |
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100 | max = cmap->num_encodings; |
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101 | |
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102 | while ( min < max ) |
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103 | { |
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104 | FT_UInt32 code; |
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105 | |
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106 | |
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107 | mid = ( min + max ) >> 1; |
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108 | code = encodings[mid].enc; |
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109 | |
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110 | if ( charcode == code ) |
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111 | { |
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112 | /* increase glyph index by 1 -- */ |
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113 | /* we reserve slot 0 for the undefined glyph */ |
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114 | result = encodings[mid].glyph + 1; |
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115 | break; |
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116 | } |
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117 | |
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118 | if ( charcode < code ) |
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119 | max = mid; |
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120 | else |
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121 | min = mid + 1; |
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122 | } |
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123 | |
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124 | return result; |
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125 | } |
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126 | |
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127 | |
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128 | FT_CALLBACK_DEF( FT_UInt ) |
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129 | bdf_cmap_char_next( FT_CMap bdfcmap, |
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130 | FT_UInt32 *acharcode ) |
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131 | { |
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132 | BDF_CMap cmap = (BDF_CMap)bdfcmap; |
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133 | BDF_encoding_el* encodings = cmap->encodings; |
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134 | FT_UInt min, max, mid; |
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135 | FT_UInt32 charcode = *acharcode + 1; |
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136 | FT_UInt result = 0; |
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137 | |
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138 | |
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139 | min = 0; |
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140 | max = cmap->num_encodings; |
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141 | |
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142 | while ( min < max ) |
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143 | { |
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144 | FT_UInt32 code; |
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145 | |
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146 | |
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147 | mid = ( min + max ) >> 1; |
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148 | code = encodings[mid].enc; |
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149 | |
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150 | if ( charcode == code ) |
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151 | { |
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152 | /* increase glyph index by 1 -- */ |
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153 | /* we reserve slot 0 for the undefined glyph */ |
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154 | result = encodings[mid].glyph + 1; |
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155 | goto Exit; |
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156 | } |
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157 | |
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158 | if ( charcode < code ) |
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159 | max = mid; |
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160 | else |
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161 | min = mid + 1; |
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162 | } |
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163 | |
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164 | charcode = 0; |
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165 | if ( min < cmap->num_encodings ) |
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166 | { |
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167 | charcode = encodings[min].enc; |
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168 | result = encodings[min].glyph + 1; |
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169 | } |
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170 | |
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171 | Exit: |
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172 | *acharcode = charcode; |
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173 | return result; |
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174 | } |
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175 | |
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176 | |
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177 | FT_CALLBACK_TABLE_DEF |
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178 | const FT_CMap_ClassRec bdf_cmap_class = |
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179 | { |
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180 | sizeof ( BDF_CMapRec ), |
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181 | bdf_cmap_init, |
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182 | bdf_cmap_done, |
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183 | bdf_cmap_char_index, |
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184 | bdf_cmap_char_next, |
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185 | |
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186 | NULL, NULL, NULL, NULL, NULL |
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187 | }; |
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188 | |
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189 | |
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190 | static FT_Error |
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191 | bdf_interpret_style( BDF_Face bdf ) |
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192 | { |
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193 | FT_Error error = BDF_Err_Ok; |
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194 | FT_Face face = FT_FACE( bdf ); |
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195 | FT_Memory memory = face->memory; |
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196 | bdf_font_t* font = bdf->bdffont; |
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197 | bdf_property_t* prop; |
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198 | |
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199 | int nn, len; |
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200 | char* strings[4] = { NULL, NULL, NULL, NULL }; |
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201 | int lengths[4]; |
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202 | |
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203 | |
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204 | face->style_flags = 0; |
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205 | |
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206 | prop = bdf_get_font_property( font, (char *)"SLANT" ); |
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207 | if ( prop && prop->format == BDF_ATOM && |
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208 | prop->value.atom && |
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209 | ( *(prop->value.atom) == 'O' || *(prop->value.atom) == 'o' || |
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210 | *(prop->value.atom) == 'I' || *(prop->value.atom) == 'i' ) ) |
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211 | { |
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212 | face->style_flags |= FT_STYLE_FLAG_ITALIC; |
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213 | strings[2] = ( *(prop->value.atom) == 'O' || *(prop->value.atom) == 'o' ) |
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214 | ? (char *)"Oblique" |
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215 | : (char *)"Italic"; |
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216 | } |
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217 | |
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218 | prop = bdf_get_font_property( font, (char *)"WEIGHT_NAME" ); |
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219 | if ( prop && prop->format == BDF_ATOM && |
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220 | prop->value.atom && |
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221 | ( *(prop->value.atom) == 'B' || *(prop->value.atom) == 'b' ) ) |
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222 | { |
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223 | face->style_flags |= FT_STYLE_FLAG_BOLD; |
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224 | strings[1] = (char *)"Bold"; |
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225 | } |
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226 | |
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227 | prop = bdf_get_font_property( font, (char *)"SETWIDTH_NAME" ); |
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228 | if ( prop && prop->format == BDF_ATOM && |
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229 | prop->value.atom && *(prop->value.atom) && |
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230 | !( *(prop->value.atom) == 'N' || *(prop->value.atom) == 'n' ) ) |
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231 | strings[3] = (char *)(prop->value.atom); |
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232 | |
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233 | prop = bdf_get_font_property( font, (char *)"ADD_STYLE_NAME" ); |
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234 | if ( prop && prop->format == BDF_ATOM && |
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235 | prop->value.atom && *(prop->value.atom) && |
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236 | !( *(prop->value.atom) == 'N' || *(prop->value.atom) == 'n' ) ) |
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237 | strings[0] = (char *)(prop->value.atom); |
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238 | |
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239 | len = 0; |
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240 | |
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241 | for ( len = 0, nn = 0; nn < 4; nn++ ) |
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242 | { |
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243 | lengths[nn] = 0; |
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244 | if ( strings[nn] ) |
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245 | { |
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246 | lengths[nn] = ft_strlen( strings[nn] ); |
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247 | len += lengths[nn] + 1; |
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248 | } |
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249 | } |
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250 | |
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251 | if ( len == 0 ) |
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252 | { |
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253 | strings[0] = (char *)"Regular"; |
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254 | lengths[0] = ft_strlen( strings[0] ); |
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255 | len = lengths[0] + 1; |
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256 | } |
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257 | |
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258 | { |
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259 | char* s; |
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260 | |
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261 | |
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262 | if ( FT_ALLOC( face->style_name, len ) ) |
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263 | return error; |
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264 | |
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265 | s = face->style_name; |
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266 | |
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267 | for ( nn = 0; nn < 4; nn++ ) |
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268 | { |
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269 | char* src = strings[nn]; |
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270 | |
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271 | |
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272 | len = lengths[nn]; |
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273 | |
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274 | if ( src == NULL ) |
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275 | continue; |
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276 | |
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277 | /* separate elements with a space */ |
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278 | if ( s != face->style_name ) |
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279 | *s++ = ' '; |
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280 | |
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281 | ft_memcpy( s, src, len ); |
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282 | |
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283 | /* need to convert spaces to dashes for */ |
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284 | /* add_style_name and setwidth_name */ |
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285 | if ( nn == 0 || nn == 3 ) |
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286 | { |
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287 | int mm; |
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288 | |
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289 | |
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290 | for ( mm = 0; mm < len; mm++ ) |
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291 | if ( s[mm] == ' ' ) |
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292 | s[mm] = '-'; |
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293 | } |
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294 | |
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295 | s += len; |
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296 | } |
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297 | *s = 0; |
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298 | } |
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299 | |
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300 | return error; |
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301 | } |
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302 | |
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303 | |
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304 | FT_CALLBACK_DEF( void ) |
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305 | BDF_Face_Done( FT_Face bdfface ) /* BDF_Face */ |
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306 | { |
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307 | BDF_Face face = (BDF_Face)bdfface; |
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308 | FT_Memory memory; |
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309 | |
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310 | |
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311 | if ( !face ) |
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312 | return; |
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313 | |
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314 | memory = FT_FACE_MEMORY( face ); |
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315 | |
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316 | bdf_free_font( face->bdffont ); |
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317 | |
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318 | FT_FREE( face->en_table ); |
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319 | |
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320 | FT_FREE( face->charset_encoding ); |
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321 | FT_FREE( face->charset_registry ); |
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322 | FT_FREE( bdfface->family_name ); |
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323 | FT_FREE( bdfface->style_name ); |
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324 | |
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325 | FT_FREE( bdfface->available_sizes ); |
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326 | |
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327 | FT_FREE( face->bdffont ); |
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328 | |
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329 | FT_TRACE4(( "BDF_Face_Done: done face\n" )); |
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330 | } |
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331 | |
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332 | |
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333 | FT_CALLBACK_DEF( FT_Error ) |
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334 | BDF_Face_Init( FT_Stream stream, |
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335 | FT_Face bdfface, /* BDF_Face */ |
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336 | FT_Int face_index, |
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337 | FT_Int num_params, |
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338 | FT_Parameter* params ) |
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339 | { |
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340 | FT_Error error = BDF_Err_Ok; |
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341 | BDF_Face face = (BDF_Face)bdfface; |
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342 | FT_Memory memory = FT_FACE_MEMORY( face ); |
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343 | |
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344 | bdf_font_t* font = NULL; |
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345 | bdf_options_t options; |
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346 | |
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347 | FT_UNUSED( num_params ); |
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348 | FT_UNUSED( params ); |
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349 | FT_UNUSED( face_index ); |
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350 | |
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351 | |
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352 | if ( FT_STREAM_SEEK( 0 ) ) |
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353 | goto Exit; |
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354 | |
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355 | options.correct_metrics = 1; /* FZ XXX: options semantics */ |
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356 | options.keep_unencoded = 1; |
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357 | options.keep_comments = 0; |
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358 | options.font_spacing = BDF_PROPORTIONAL; |
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359 | |
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360 | error = bdf_load_font( stream, memory, &options, &font ); |
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361 | if ( error == BDF_Err_Missing_Startfont_Field ) |
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362 | { |
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363 | FT_TRACE2(( "[not a valid BDF file]\n" )); |
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364 | goto Fail; |
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365 | } |
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366 | else if ( error ) |
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367 | goto Exit; |
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368 | |
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369 | /* we have a bdf font: let's construct the face object */ |
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370 | face->bdffont = font; |
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371 | { |
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372 | bdf_property_t* prop = NULL; |
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373 | |
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374 | |
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375 | FT_TRACE4(( "number of glyphs: %d (%d)\n", |
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376 | font->glyphs_size, |
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377 | font->glyphs_used )); |
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378 | FT_TRACE4(( "number of unencoded glyphs: %d (%d)\n", |
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379 | font->unencoded_size, |
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380 | font->unencoded_used )); |
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381 | |
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382 | bdfface->num_faces = 1; |
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383 | bdfface->face_index = 0; |
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384 | bdfface->face_flags = FT_FACE_FLAG_FIXED_SIZES | |
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385 | FT_FACE_FLAG_HORIZONTAL | |
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386 | FT_FACE_FLAG_FAST_GLYPHS; |
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387 | |
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388 | prop = bdf_get_font_property( font, "SPACING" ); |
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389 | if ( prop && prop->format == BDF_ATOM && |
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390 | prop->value.atom && |
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391 | ( *(prop->value.atom) == 'M' || *(prop->value.atom) == 'm' || |
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392 | *(prop->value.atom) == 'C' || *(prop->value.atom) == 'c' ) ) |
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393 | bdfface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; |
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394 | |
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395 | /* FZ XXX: TO DO: FT_FACE_FLAGS_VERTICAL */ |
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396 | /* FZ XXX: I need a font to implement this */ |
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397 | |
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398 | prop = bdf_get_font_property( font, "FAMILY_NAME" ); |
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399 | if ( prop && prop->value.atom ) |
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400 | { |
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401 | if ( FT_STRDUP( bdfface->family_name, prop->value.atom ) ) |
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402 | goto Exit; |
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403 | } |
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404 | else |
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405 | bdfface->family_name = 0; |
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406 | |
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407 | if ( ( error = bdf_interpret_style( face ) ) != 0 ) |
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408 | goto Exit; |
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409 | |
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410 | /* the number of glyphs (with one slot for the undefined glyph */ |
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411 | /* at position 0 and all unencoded glyphs) */ |
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412 | bdfface->num_glyphs = font->glyphs_size + 1; |
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413 | |
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414 | bdfface->num_fixed_sizes = 1; |
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415 | if ( FT_NEW_ARRAY( bdfface->available_sizes, 1 ) ) |
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416 | goto Exit; |
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417 | |
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418 | { |
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419 | FT_Bitmap_Size* bsize = bdfface->available_sizes; |
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420 | FT_Short resolution_x = 0, resolution_y = 0; |
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421 | |
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422 | |
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423 | FT_MEM_ZERO( bsize, sizeof ( FT_Bitmap_Size ) ); |
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424 | |
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425 | bsize->height = (FT_Short)( font->font_ascent + font->font_descent ); |
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426 | |
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427 | prop = bdf_get_font_property( font, "AVERAGE_WIDTH" ); |
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428 | if ( prop ) |
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429 | bsize->width = (FT_Short)( ( prop->value.int32 + 5 ) / 10 ); |
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430 | else |
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431 | bsize->width = (FT_Short)( bsize->height * 2/3 ); |
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432 | |
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433 | prop = bdf_get_font_property( font, "POINT_SIZE" ); |
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434 | if ( prop ) |
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435 | /* convert from 722.7 decipoints to 72 points per inch */ |
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436 | bsize->size = |
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437 | (FT_Pos)( ( prop->value.int32 * 64 * 7200 + 36135L ) / 72270L ); |
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438 | else |
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439 | bsize->size = bsize->width << 6; |
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440 | |
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441 | prop = bdf_get_font_property( font, "PIXEL_SIZE" ); |
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442 | if ( prop ) |
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443 | bsize->y_ppem = (FT_Short)prop->value.int32 << 6; |
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444 | |
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445 | prop = bdf_get_font_property( font, "RESOLUTION_X" ); |
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446 | if ( prop ) |
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447 | resolution_x = (FT_Short)prop->value.int32; |
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448 | |
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449 | prop = bdf_get_font_property( font, "RESOLUTION_Y" ); |
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450 | if ( prop ) |
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451 | resolution_y = (FT_Short)prop->value.int32; |
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452 | |
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453 | if ( bsize->y_ppem == 0 ) |
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454 | { |
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455 | bsize->y_ppem = bsize->size; |
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456 | if ( resolution_y ) |
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457 | bsize->y_ppem = bsize->y_ppem * resolution_y / 72; |
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458 | } |
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459 | if ( resolution_x && resolution_y ) |
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460 | bsize->x_ppem = bsize->y_ppem * resolution_x / resolution_y; |
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461 | else |
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462 | bsize->x_ppem = bsize->y_ppem; |
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463 | } |
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464 | |
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465 | /* encoding table */ |
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466 | { |
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467 | bdf_glyph_t* cur = font->glyphs; |
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468 | unsigned long n; |
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469 | |
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470 | |
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471 | if ( FT_NEW_ARRAY( face->en_table, font->glyphs_size ) ) |
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472 | goto Exit; |
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473 | |
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474 | face->default_glyph = 0; |
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475 | for ( n = 0; n < font->glyphs_size; n++ ) |
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476 | { |
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477 | (face->en_table[n]).enc = cur[n].encoding; |
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478 | FT_TRACE4(( "idx %d, val 0x%lX\n", n, cur[n].encoding )); |
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479 | (face->en_table[n]).glyph = (FT_Short)n; |
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480 | |
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481 | if ( cur[n].encoding == font->default_char ) |
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482 | face->default_glyph = n; |
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483 | } |
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484 | } |
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485 | |
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486 | /* charmaps */ |
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487 | { |
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488 | bdf_property_t *charset_registry = 0, *charset_encoding = 0; |
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489 | FT_Bool unicode_charmap = 0; |
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490 | |
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491 | |
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492 | charset_registry = |
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493 | bdf_get_font_property( font, "CHARSET_REGISTRY" ); |
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494 | charset_encoding = |
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495 | bdf_get_font_property( font, "CHARSET_ENCODING" ); |
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496 | if ( charset_registry && charset_encoding ) |
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497 | { |
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498 | if ( charset_registry->format == BDF_ATOM && |
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499 | charset_encoding->format == BDF_ATOM && |
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500 | charset_registry->value.atom && |
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501 | charset_encoding->value.atom ) |
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502 | { |
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503 | const char* s; |
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504 | |
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505 | |
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506 | if ( FT_STRDUP( face->charset_encoding, |
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507 | charset_encoding->value.atom ) || |
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508 | FT_STRDUP( face->charset_registry, |
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509 | charset_registry->value.atom ) ) |
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510 | goto Exit; |
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511 | |
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512 | /* Uh, oh, compare first letters manually to avoid dependency */ |
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513 | /* on locales. */ |
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514 | s = face->charset_registry; |
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515 | if ( ( s[0] == 'i' || s[0] == 'I' ) && |
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516 | ( s[1] == 's' || s[1] == 'S' ) && |
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517 | ( s[2] == 'o' || s[2] == 'O' ) ) |
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518 | { |
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519 | s += 3; |
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520 | if ( !ft_strcmp( s, "10646" ) || |
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521 | ( !ft_strcmp( s, "8859" ) && |
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522 | !ft_strcmp( face->charset_encoding, "1" ) ) ) |
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523 | unicode_charmap = 1; |
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524 | } |
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525 | |
---|
526 | { |
---|
527 | FT_CharMapRec charmap; |
---|
528 | |
---|
529 | |
---|
530 | charmap.face = FT_FACE( face ); |
---|
531 | charmap.encoding = FT_ENCODING_NONE; |
---|
532 | charmap.platform_id = 0; |
---|
533 | charmap.encoding_id = 0; |
---|
534 | |
---|
535 | if ( unicode_charmap ) |
---|
536 | { |
---|
537 | charmap.encoding = FT_ENCODING_UNICODE; |
---|
538 | charmap.platform_id = 3; |
---|
539 | charmap.encoding_id = 1; |
---|
540 | } |
---|
541 | |
---|
542 | error = FT_CMap_New( &bdf_cmap_class, NULL, &charmap, NULL ); |
---|
543 | |
---|
544 | #if 0 |
---|
545 | /* Select default charmap */ |
---|
546 | if ( bdfface->num_charmaps ) |
---|
547 | bdfface->charmap = bdfface->charmaps[0]; |
---|
548 | #endif |
---|
549 | } |
---|
550 | |
---|
551 | goto Exit; |
---|
552 | } |
---|
553 | } |
---|
554 | |
---|
555 | /* otherwise assume Adobe standard encoding */ |
---|
556 | |
---|
557 | { |
---|
558 | FT_CharMapRec charmap; |
---|
559 | |
---|
560 | |
---|
561 | charmap.face = FT_FACE( face ); |
---|
562 | charmap.encoding = FT_ENCODING_ADOBE_STANDARD; |
---|
563 | charmap.platform_id = 7; |
---|
564 | charmap.encoding_id = 0; |
---|
565 | |
---|
566 | error = FT_CMap_New( &bdf_cmap_class, NULL, &charmap, NULL ); |
---|
567 | |
---|
568 | /* Select default charmap */ |
---|
569 | if ( bdfface->num_charmaps ) |
---|
570 | bdfface->charmap = bdfface->charmaps[0]; |
---|
571 | } |
---|
572 | } |
---|
573 | } |
---|
574 | |
---|
575 | Exit: |
---|
576 | return error; |
---|
577 | |
---|
578 | Fail: |
---|
579 | BDF_Face_Done( bdfface ); |
---|
580 | return BDF_Err_Unknown_File_Format; |
---|
581 | } |
---|
582 | |
---|
583 | |
---|
584 | FT_CALLBACK_DEF( FT_Error ) |
---|
585 | BDF_Size_Select( FT_Size size, |
---|
586 | FT_ULong strike_index ) |
---|
587 | { |
---|
588 | bdf_font_t* bdffont = ( (BDF_Face)size->face )->bdffont; |
---|
589 | |
---|
590 | |
---|
591 | FT_Select_Metrics( size->face, strike_index ); |
---|
592 | |
---|
593 | size->metrics.ascender = bdffont->font_ascent << 6; |
---|
594 | size->metrics.descender = -bdffont->font_descent << 6; |
---|
595 | size->metrics.max_advance = bdffont->bbx.width << 6; |
---|
596 | |
---|
597 | return BDF_Err_Ok; |
---|
598 | } |
---|
599 | |
---|
600 | |
---|
601 | FT_CALLBACK_DEF( FT_Error ) |
---|
602 | BDF_Size_Request( FT_Size size, |
---|
603 | FT_Size_Request req ) |
---|
604 | { |
---|
605 | FT_Face face = size->face; |
---|
606 | FT_Bitmap_Size* bsize = face->available_sizes; |
---|
607 | bdf_font_t* bdffont = ( (BDF_Face)face )->bdffont; |
---|
608 | FT_Error error = BDF_Err_Invalid_Pixel_Size; |
---|
609 | FT_Long height; |
---|
610 | |
---|
611 | |
---|
612 | height = FT_REQUEST_HEIGHT( req ); |
---|
613 | height = ( height + 32 ) >> 6; |
---|
614 | |
---|
615 | switch ( req->type ) |
---|
616 | { |
---|
617 | case FT_SIZE_REQUEST_TYPE_NOMINAL: |
---|
618 | if ( height == ( ( bsize->y_ppem + 32 ) >> 6 ) ) |
---|
619 | error = BDF_Err_Ok; |
---|
620 | break; |
---|
621 | |
---|
622 | case FT_SIZE_REQUEST_TYPE_REAL_DIM: |
---|
623 | if ( height == ( bdffont->font_ascent + |
---|
624 | bdffont->font_descent ) ) |
---|
625 | error = BDF_Err_Ok; |
---|
626 | break; |
---|
627 | |
---|
628 | default: |
---|
629 | error = BDF_Err_Unimplemented_Feature; |
---|
630 | break; |
---|
631 | } |
---|
632 | |
---|
633 | if ( error ) |
---|
634 | return error; |
---|
635 | else |
---|
636 | return BDF_Size_Select( size, 0 ); |
---|
637 | } |
---|
638 | |
---|
639 | |
---|
640 | |
---|
641 | FT_CALLBACK_DEF( FT_Error ) |
---|
642 | BDF_Glyph_Load( FT_GlyphSlot slot, |
---|
643 | FT_Size size, |
---|
644 | FT_UInt glyph_index, |
---|
645 | FT_Int32 load_flags ) |
---|
646 | { |
---|
647 | BDF_Face bdf = (BDF_Face)FT_SIZE_FACE( size ); |
---|
648 | FT_Face face = FT_FACE( bdf ); |
---|
649 | FT_Error error = BDF_Err_Ok; |
---|
650 | FT_Bitmap* bitmap = &slot->bitmap; |
---|
651 | bdf_glyph_t glyph; |
---|
652 | int bpp = bdf->bdffont->bpp; |
---|
653 | |
---|
654 | FT_UNUSED( load_flags ); |
---|
655 | |
---|
656 | |
---|
657 | if ( !face || glyph_index >= (FT_UInt)face->num_glyphs ) |
---|
658 | { |
---|
659 | error = BDF_Err_Invalid_Argument; |
---|
660 | goto Exit; |
---|
661 | } |
---|
662 | |
---|
663 | /* index 0 is the undefined glyph */ |
---|
664 | if ( glyph_index == 0 ) |
---|
665 | glyph_index = bdf->default_glyph; |
---|
666 | else |
---|
667 | glyph_index--; |
---|
668 | |
---|
669 | /* slot, bitmap => freetype, glyph => bdflib */ |
---|
670 | glyph = bdf->bdffont->glyphs[glyph_index]; |
---|
671 | |
---|
672 | bitmap->rows = glyph.bbx.height; |
---|
673 | bitmap->width = glyph.bbx.width; |
---|
674 | bitmap->pitch = glyph.bpr; |
---|
675 | |
---|
676 | /* note: we don't allocate a new array to hold the bitmap; */ |
---|
677 | /* we can simply point to it */ |
---|
678 | ft_glyphslot_set_bitmap( slot, glyph.bitmap ); |
---|
679 | |
---|
680 | switch ( bpp ) |
---|
681 | { |
---|
682 | case 1: |
---|
683 | bitmap->pixel_mode = FT_PIXEL_MODE_MONO; |
---|
684 | break; |
---|
685 | case 2: |
---|
686 | bitmap->pixel_mode = FT_PIXEL_MODE_GRAY2; |
---|
687 | break; |
---|
688 | case 4: |
---|
689 | bitmap->pixel_mode = FT_PIXEL_MODE_GRAY4; |
---|
690 | break; |
---|
691 | case 8: |
---|
692 | bitmap->pixel_mode = FT_PIXEL_MODE_GRAY; |
---|
693 | bitmap->num_grays = 256; |
---|
694 | break; |
---|
695 | } |
---|
696 | |
---|
697 | slot->format = FT_GLYPH_FORMAT_BITMAP; |
---|
698 | slot->bitmap_left = glyph.bbx.x_offset; |
---|
699 | slot->bitmap_top = glyph.bbx.ascent; |
---|
700 | |
---|
701 | slot->metrics.horiAdvance = glyph.dwidth << 6; |
---|
702 | slot->metrics.horiBearingX = glyph.bbx.x_offset << 6; |
---|
703 | slot->metrics.horiBearingY = glyph.bbx.ascent << 6; |
---|
704 | slot->metrics.width = bitmap->width << 6; |
---|
705 | slot->metrics.height = bitmap->rows << 6; |
---|
706 | |
---|
707 | /* |
---|
708 | * XXX DWIDTH1 and VVECTOR should be parsed and |
---|
709 | * used here, provided such fonts do exist. |
---|
710 | */ |
---|
711 | ft_synthesize_vertical_metrics( &slot->metrics, |
---|
712 | bdf->bdffont->bbx.height << 6 ); |
---|
713 | |
---|
714 | Exit: |
---|
715 | return error; |
---|
716 | } |
---|
717 | |
---|
718 | |
---|
719 | /* |
---|
720 | * |
---|
721 | * BDF SERVICE |
---|
722 | * |
---|
723 | */ |
---|
724 | |
---|
725 | static FT_Error |
---|
726 | bdf_get_bdf_property( BDF_Face face, |
---|
727 | const char* prop_name, |
---|
728 | BDF_PropertyRec *aproperty ) |
---|
729 | { |
---|
730 | bdf_property_t* prop; |
---|
731 | |
---|
732 | |
---|
733 | FT_ASSERT( face && face->bdffont ); |
---|
734 | |
---|
735 | prop = bdf_get_font_property( face->bdffont, prop_name ); |
---|
736 | if ( prop ) |
---|
737 | { |
---|
738 | switch ( prop->format ) |
---|
739 | { |
---|
740 | case BDF_ATOM: |
---|
741 | aproperty->type = BDF_PROPERTY_TYPE_ATOM; |
---|
742 | aproperty->u.atom = prop->value.atom; |
---|
743 | break; |
---|
744 | |
---|
745 | case BDF_INTEGER: |
---|
746 | aproperty->type = BDF_PROPERTY_TYPE_INTEGER; |
---|
747 | aproperty->u.integer = prop->value.int32; |
---|
748 | break; |
---|
749 | |
---|
750 | case BDF_CARDINAL: |
---|
751 | aproperty->type = BDF_PROPERTY_TYPE_CARDINAL; |
---|
752 | aproperty->u.cardinal = prop->value.card32; |
---|
753 | break; |
---|
754 | |
---|
755 | default: |
---|
756 | goto Fail; |
---|
757 | } |
---|
758 | return 0; |
---|
759 | } |
---|
760 | |
---|
761 | Fail: |
---|
762 | return BDF_Err_Invalid_Argument; |
---|
763 | } |
---|
764 | |
---|
765 | |
---|
766 | static FT_Error |
---|
767 | bdf_get_charset_id( BDF_Face face, |
---|
768 | const char* *acharset_encoding, |
---|
769 | const char* *acharset_registry ) |
---|
770 | { |
---|
771 | *acharset_encoding = face->charset_encoding; |
---|
772 | *acharset_registry = face->charset_registry; |
---|
773 | |
---|
774 | return 0; |
---|
775 | } |
---|
776 | |
---|
777 | |
---|
778 | static const FT_Service_BDFRec bdf_service_bdf = |
---|
779 | { |
---|
780 | (FT_BDF_GetCharsetIdFunc)bdf_get_charset_id, |
---|
781 | (FT_BDF_GetPropertyFunc) bdf_get_bdf_property |
---|
782 | }; |
---|
783 | |
---|
784 | |
---|
785 | /* |
---|
786 | * |
---|
787 | * SERVICES LIST |
---|
788 | * |
---|
789 | */ |
---|
790 | |
---|
791 | static const FT_ServiceDescRec bdf_services[] = |
---|
792 | { |
---|
793 | { FT_SERVICE_ID_BDF, &bdf_service_bdf }, |
---|
794 | { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_BDF }, |
---|
795 | { NULL, NULL } |
---|
796 | }; |
---|
797 | |
---|
798 | |
---|
799 | FT_CALLBACK_DEF( FT_Module_Interface ) |
---|
800 | bdf_driver_requester( FT_Module module, |
---|
801 | const char* name ) |
---|
802 | { |
---|
803 | FT_UNUSED( module ); |
---|
804 | |
---|
805 | return ft_service_list_lookup( bdf_services, name ); |
---|
806 | } |
---|
807 | |
---|
808 | |
---|
809 | |
---|
810 | FT_CALLBACK_TABLE_DEF |
---|
811 | const FT_Driver_ClassRec bdf_driver_class = |
---|
812 | { |
---|
813 | { |
---|
814 | FT_MODULE_FONT_DRIVER | |
---|
815 | FT_MODULE_DRIVER_NO_OUTLINES, |
---|
816 | sizeof ( FT_DriverRec ), |
---|
817 | |
---|
818 | "bdf", |
---|
819 | 0x10000L, |
---|
820 | 0x20000L, |
---|
821 | |
---|
822 | 0, |
---|
823 | |
---|
824 | (FT_Module_Constructor)0, |
---|
825 | (FT_Module_Destructor) 0, |
---|
826 | (FT_Module_Requester) bdf_driver_requester |
---|
827 | }, |
---|
828 | |
---|
829 | sizeof ( BDF_FaceRec ), |
---|
830 | sizeof ( FT_SizeRec ), |
---|
831 | sizeof ( FT_GlyphSlotRec ), |
---|
832 | |
---|
833 | BDF_Face_Init, |
---|
834 | BDF_Face_Done, |
---|
835 | 0, /* FT_Size_InitFunc */ |
---|
836 | 0, /* FT_Size_DoneFunc */ |
---|
837 | 0, /* FT_Slot_InitFunc */ |
---|
838 | 0, /* FT_Slot_DoneFunc */ |
---|
839 | |
---|
840 | #ifdef FT_CONFIG_OPTION_OLD_INTERNALS |
---|
841 | ft_stub_set_char_sizes, |
---|
842 | ft_stub_set_pixel_sizes, |
---|
843 | #endif |
---|
844 | BDF_Glyph_Load, |
---|
845 | |
---|
846 | 0, /* FT_Face_GetKerningFunc */ |
---|
847 | 0, /* FT_Face_AttachFunc */ |
---|
848 | 0, /* FT_Face_GetAdvancesFunc */ |
---|
849 | |
---|
850 | BDF_Size_Request, |
---|
851 | BDF_Size_Select |
---|
852 | }; |
---|
853 | |
---|
854 | |
---|
855 | /* END */ |
---|