1 /***************************************************************************/ |
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2 /* */ |
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3 /* pshrec.h */ |
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4 /* */ |
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5 /* Postscript (Type1/Type2) hints recorder (specification). */ |
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6 /* */ |
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7 /* Copyright 2001, 2002, 2003, 2006, 2008 by */ |
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8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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9 /* */ |
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10 /* This file is part of the FreeType project, and may only be used, */ |
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11 /* modified, and distributed under the terms of the FreeType project */ |
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12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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13 /* this file you indicate that you have read the license and */ |
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14 /* understand and accept it fully. */ |
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15 /* */ |
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16 /***************************************************************************/ |
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17 |
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18 |
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19 /**************************************************************************/ |
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20 /* */ |
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21 /* The functions defined here are called from the Type 1, CID and CFF */ |
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22 /* font drivers to record the hints of a given character/glyph. */ |
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23 /* */ |
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24 /* The hints are recorded in a unified format, and are later processed */ |
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25 /* by the `optimizer' and `fitter' to adjust the outlines to the pixel */ |
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26 /* grid. */ |
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27 /* */ |
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28 /**************************************************************************/ |
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29 |
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30 |
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31 #ifndef __PSHREC_H__ |
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32 #define __PSHREC_H__ |
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33 |
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34 |
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35 #include <ft2build.h> |
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36 #include FT_INTERNAL_POSTSCRIPT_HINTS_H |
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37 #include "pshglob.h" |
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38 |
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39 |
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40 FT_BEGIN_HEADER |
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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 /***** *****/ |
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46 /***** GLYPH HINTS RECORDER INTERNALS *****/ |
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47 /***** *****/ |
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48 /*************************************************************************/ |
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49 /*************************************************************************/ |
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50 |
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51 /* handle to hint record */ |
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52 typedef struct PS_HintRec_* PS_Hint; |
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53 |
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54 /* hint types */ |
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55 typedef enum PS_Hint_Type_ |
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56 { |
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57 PS_HINT_TYPE_1 = 1, |
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58 PS_HINT_TYPE_2 = 2 |
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59 |
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60 } PS_Hint_Type; |
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61 |
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62 |
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63 /* hint flags */ |
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64 typedef enum PS_Hint_Flags_ |
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65 { |
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66 PS_HINT_FLAG_GHOST = 1, |
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67 PS_HINT_FLAG_BOTTOM = 2 |
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68 |
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69 } PS_Hint_Flags; |
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70 |
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71 |
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72 /* hint descriptor */ |
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73 typedef struct PS_HintRec_ |
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74 { |
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75 FT_Int pos; |
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76 FT_Int len; |
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77 FT_UInt flags; |
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78 |
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79 } PS_HintRec; |
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80 |
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81 |
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82 #define ps_hint_is_active( x ) ( (x)->flags & PS_HINT_FLAG_ACTIVE ) |
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83 #define ps_hint_is_ghost( x ) ( (x)->flags & PS_HINT_FLAG_GHOST ) |
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84 #define ps_hint_is_bottom( x ) ( (x)->flags & PS_HINT_FLAG_BOTTOM ) |
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85 |
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86 |
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87 /* hints table descriptor */ |
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88 typedef struct PS_Hint_TableRec_ |
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89 { |
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90 FT_UInt num_hints; |
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91 FT_UInt max_hints; |
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92 PS_Hint hints; |
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93 |
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94 } PS_Hint_TableRec, *PS_Hint_Table; |
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95 |
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96 |
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97 /* hint and counter mask descriptor */ |
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98 typedef struct PS_MaskRec_ |
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99 { |
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100 FT_UInt num_bits; |
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101 FT_UInt max_bits; |
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102 FT_Byte* bytes; |
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103 FT_UInt end_point; |
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104 |
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105 } PS_MaskRec, *PS_Mask; |
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106 |
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107 |
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108 /* masks and counters table descriptor */ |
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109 typedef struct PS_Mask_TableRec_ |
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110 { |
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111 FT_UInt num_masks; |
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112 FT_UInt max_masks; |
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113 PS_Mask masks; |
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114 |
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115 } PS_Mask_TableRec, *PS_Mask_Table; |
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116 |
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117 |
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118 /* dimension-specific hints descriptor */ |
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119 typedef struct PS_DimensionRec_ |
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120 { |
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121 PS_Hint_TableRec hints; |
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122 PS_Mask_TableRec masks; |
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123 PS_Mask_TableRec counters; |
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124 |
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125 } PS_DimensionRec, *PS_Dimension; |
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126 |
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127 |
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128 /* glyph hints descriptor */ |
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129 /* dimension 0 => X coordinates + vertical hints/stems */ |
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130 /* dimension 1 => Y coordinates + horizontal hints/stems */ |
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131 typedef struct PS_HintsRec_ |
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132 { |
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133 FT_Memory memory; |
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134 FT_Error error; |
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135 FT_UInt32 magic; |
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136 PS_Hint_Type hint_type; |
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137 PS_DimensionRec dimension[2]; |
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138 |
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139 } PS_HintsRec, *PS_Hints; |
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140 |
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141 /* */ |
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142 |
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143 /* initialize hints recorder */ |
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144 FT_LOCAL( FT_Error ) |
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145 ps_hints_init( PS_Hints hints, |
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146 FT_Memory memory ); |
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147 |
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148 /* finalize hints recorder */ |
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149 FT_LOCAL( void ) |
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150 ps_hints_done( PS_Hints hints ); |
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151 |
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152 /* initialize Type1 hints recorder interface */ |
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153 FT_LOCAL( void ) |
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154 t1_hints_funcs_init( T1_Hints_FuncsRec* funcs ); |
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155 |
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156 /* initialize Type2 hints recorder interface */ |
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157 FT_LOCAL( void ) |
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158 t2_hints_funcs_init( T2_Hints_FuncsRec* funcs ); |
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159 |
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160 |
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161 #ifdef DEBUG_HINTER |
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162 extern PS_Hints ps_debug_hints; |
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163 extern int ps_debug_no_horz_hints; |
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164 extern int ps_debug_no_vert_hints; |
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165 #endif |
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166 |
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167 /* */ |
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168 |
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169 |
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170 FT_END_HEADER |
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171 |
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172 |
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173 #endif /* __PS_HINTER_RECORD_H__ */ |
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174 |
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175 |
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176 /* END */ |
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