1 | /* |
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2 | * True Type Font to Adobe Type 1 font converter |
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3 | * By Mark Heath <mheath@netspace.net.au> |
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4 | * Based on ttf2pfa by Andrew Weeks <ccsaw@bath.ac.uk> |
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5 | * With help from Frank M. Siegert <fms@this.net> |
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6 | * |
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7 | * see COPYRIGHT |
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8 | * |
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9 | */ |
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10 | #include <stdio.h> |
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11 | #include <stdlib.h> |
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12 | #include <string.h> |
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13 | #include <sys/types.h> |
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14 | #include <sys/stat.h> |
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15 | #include <fcntl.h> |
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16 | #include <time.h> |
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17 | #include <ctype.h> |
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18 | #include <math.h> |
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19 | |
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20 | #ifndef WINDOWS |
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21 | # include <unistd.h> |
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22 | # include <netinet/in.h> |
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23 | #else |
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24 | # include "windows.h" |
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25 | #endif |
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26 | |
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27 | #include "ttf.h" |
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28 | #include "pt1.h" |
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29 | #include "global.h" |
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30 | |
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31 | /* prototypes of call entries */ |
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32 | static void openfont(char *fname, char *arg); |
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33 | static void closefont( void); |
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34 | static int getnglyphs ( void); |
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35 | static int glnames( GLYPH *glyph_list); |
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36 | static void glmetrics( GLYPH *glyph_list); |
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37 | static int glenc( GLYPH *glyph_list, int *encoding, int *unimap); |
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38 | static void fnmetrics( struct font_metrics *fm); |
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39 | static void glpath( int glyphno, GLYPH *glyph_list); |
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40 | static void kerning( GLYPH *glyph_list); |
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41 | |
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42 | /* globals */ |
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43 | |
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44 | /* front-end descriptor */ |
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45 | struct frontsw ttf_sw = { |
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46 | /*name*/ "ttf", |
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47 | /*descr*/ "built-in TTF support", |
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48 | /*suffix*/ { "ttf" }, |
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49 | /*open*/ openfont, |
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50 | /*close*/ closefont, |
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51 | /*nglyphs*/ getnglyphs, |
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52 | /*glnames*/ glnames, |
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53 | /*glmetrics*/ glmetrics, |
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54 | /*glenc*/ glenc, |
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55 | /*fnmetrics*/ fnmetrics, |
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56 | /*glpath*/ glpath, |
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57 | /*kerning*/ kerning, |
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58 | }; |
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59 | |
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60 | /* statics */ |
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61 | |
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62 | static FILE *ttf_file; |
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63 | static int ttf_nglyphs, long_offsets; |
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64 | |
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65 | static TTF_DIRECTORY *directory; |
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66 | static TTF_DIR_ENTRY *dir_entry; |
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67 | static char *filebuffer; |
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68 | static char *filebuffer_end; |
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69 | static TTF_NAME *name_table = NULL; |
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70 | static TTF_NAME_REC *name_record; |
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71 | static TTF_HEAD *head_table = NULL; |
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72 | static TTF_HHEA *hhea_table = NULL; |
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73 | static TTF_KERN *kern_table = NULL; |
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74 | static TTF_CMAP *cmap_table = NULL; |
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75 | static LONGHORMETRIC *hmtx_table = NULL; |
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76 | static TTF_GLYF *glyf_table; |
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77 | static BYTE *glyf_start = NULL; |
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78 | static TTF_MAXP *maxp_table = NULL; |
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79 | static TTF_POST_HEAD *post_table = NULL; |
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80 | static union { |
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81 | USHORT *sp; |
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82 | ULONG *lp; |
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83 | } loca_table; |
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84 | #define short_loca_table loca_table.sp |
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85 | #define long_loca_table loca_table.lp |
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86 | |
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87 | static short cmap_n_segs; |
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88 | static USHORT *cmap_seg_start, *cmap_seg_end; |
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89 | static short *cmap_idDelta, *cmap_idRangeOffset; |
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90 | static TTF_CMAP_FMT0 *encoding0; |
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91 | static int enc_type; |
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92 | |
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93 | static char *name_fields[8]; |
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94 | |
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95 | static int enc_found_ms, enc_found_mac; |
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96 | |
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97 | static char *mac_glyph_names[258] = { |
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98 | ".notdef", ".null", "CR", |
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99 | "space", "exclam", "quotedbl", "numbersign", |
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100 | "dollar", "percent", "ampersand", "quotesingle", |
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101 | "parenleft", "parenright", "asterisk", "plus", |
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102 | "comma", "hyphen", "period", "slash", |
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103 | "zero", "one", "two", "three", |
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104 | "four", "five", "six", "seven", |
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105 | "eight", "nine", "colon", "semicolon", |
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106 | "less", "equal", "greater", "question", |
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107 | "at", "A", "B", "C", |
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108 | "D", "E", "F", "G", |
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109 | "H", "I", "J", "K", |
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110 | "L", "M", "N", "O", |
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111 | "P", "Q", "R", "S", |
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112 | "T", "U", "V", "W", |
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113 | "X", "Y", "Z", "bracketleft", |
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114 | "backslash", "bracketright", "asciicircum", "underscore", |
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115 | "grave", "a", "b", "c", |
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116 | "d", "e", "f", "g", |
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117 | "h", "i", "j", "k", |
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118 | "l", "m", "n", "o", |
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119 | "p", "q", "r", "s", |
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120 | "t", "u", "v", "w", |
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121 | "x", "y", "z", "braceleft", |
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122 | "bar", "braceright", "asciitilde", "Adieresis", |
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123 | "Aring", "Ccedilla", "Eacute", "Ntilde", |
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124 | "Odieresis", "Udieresis", "aacute", "agrave", |
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125 | "acircumflex", "adieresis", "atilde", "aring", |
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126 | "ccedilla", "eacute", "egrave", "ecircumflex", |
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127 | "edieresis", "iacute", "igrave", "icircumflex", |
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128 | "idieresis", "ntilde", "oacute", "ograve", |
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129 | "ocircumflex", "odieresis", "otilde", "uacute", |
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130 | "ugrave", "ucircumflex", "udieresis", "dagger", |
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131 | "degree", "cent", "sterling", "section", |
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132 | "bullet", "paragraph", "germandbls", "registered", |
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133 | "copyright", "trademark", "acute", "dieresis", |
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134 | "notequal", "AE", "Oslash", "infinity", |
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135 | "plusminus", "lessequal", "greaterequal", "yen", |
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136 | "mu", "partialdiff", "summation", "product", |
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137 | "pi", "integral", "ordfeminine", "ordmasculine", |
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138 | "Omega", "ae", "oslash", "questiondown", |
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139 | "exclamdown", "logicalnot", "radical", "florin", |
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140 | "approxequal", "increment", "guillemotleft", "guillemotright", |
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141 | "ellipsis", "nbspace", "Agrave", "Atilde", |
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142 | "Otilde", "OE", "oe", "endash", |
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143 | "emdash", "quotedblleft", "quotedblright", "quoteleft", |
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144 | "quoteright", "divide", "lozenge", "ydieresis", |
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145 | "Ydieresis", "fraction", "currency", "guilsinglleft", |
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146 | "guilsinglright", "fi", "fl", "daggerdbl", |
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147 | "periodcentered", "quotesinglbase", "quotedblbase", "perthousand", |
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148 | "Acircumflex", "Ecircumflex", "Aacute", "Edieresis", |
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149 | "Egrave", "Iacute", "Icircumflex", "Idieresis", |
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150 | "Igrave", "Oacute", "Ocircumflex", "applelogo", |
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151 | "Ograve", "Uacute", "Ucircumflex", "Ugrave", |
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152 | "dotlessi", "circumflex", "tilde", "macron", |
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153 | "breve", "dotaccent", "ring", "cedilla", |
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154 | "hungarumlaut", "ogonek", "caron", "Lslash", |
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155 | "lslash", "Scaron", "scaron", "Zcaron", |
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156 | "zcaron", "brokenbar", "Eth", "eth", |
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157 | "Yacute", "yacute", "Thorn", "thorn", |
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158 | "minus", "multiply", "onesuperior", "twosuperior", |
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159 | "threesuperior", "onehalf", "onequarter", "threequarters", |
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160 | "franc", "Gbreve", "gbreve", "Idot", |
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161 | "Scedilla", "scedilla", "Cacute", "cacute", |
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162 | "Ccaron", "ccaron", "dmacron" |
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163 | }; |
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164 | |
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165 | /* other prototypes */ |
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166 | static void draw_composite_glyf( GLYPH *g, GLYPH *glyph_list, int glyphno, |
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167 | double *matrix, int level); |
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168 | static void draw_simple_glyf( GLYPH *g, GLYPH *glyph_list, int glyphno, |
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169 | double *matrix); |
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170 | static double f2dot14( short x); |
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171 | |
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172 | /* get the TTF description table address and length for this index */ |
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173 | |
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174 | static void |
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175 | get_glyf_table( |
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176 | int glyphno, |
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177 | TTF_GLYF **tab, |
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178 | int *len |
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179 | ) |
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180 | { |
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181 | if(tab!=NULL) { |
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182 | if (long_offsets) { |
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183 | *tab = (TTF_GLYF *) (glyf_start + ntohl(long_loca_table[glyphno])); |
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184 | } else { |
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185 | *tab = (TTF_GLYF *) (glyf_start + (ntohs(short_loca_table[glyphno]) << 1)); |
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186 | } |
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187 | } |
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188 | if(len!=NULL) { |
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189 | if (long_offsets) { |
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190 | *len = ntohl(long_loca_table[glyphno + 1]) - ntohl(long_loca_table[glyphno]); |
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191 | } else { |
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192 | *len = (ntohs(short_loca_table[glyphno + 1]) - ntohs(short_loca_table[glyphno])) << 1; |
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193 | } |
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194 | } |
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195 | } |
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196 | |
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197 | static void |
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198 | handle_name(void) |
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199 | { |
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200 | int j, k, lang, len, platform; |
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201 | char *p, *string_area; |
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202 | int found3 = 0; |
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203 | |
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204 | string_area = (char *) name_table + ntohs(name_table->offset); |
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205 | name_record = &(name_table->nameRecords); |
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206 | |
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207 | for (j = 0; j < 8; j++) { |
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208 | name_fields[j] = ""; |
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209 | } |
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210 | |
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211 | for (j = 0; j < ntohs(name_table->numberOfNameRecords); j++) { |
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212 | |
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213 | platform = ntohs(name_record->platformID); |
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214 | |
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215 | if (platform == 3) { |
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216 | |
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217 | found3 = 1; |
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218 | lang = ntohs(name_record->languageID) & 0xff; |
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219 | len = ntohs(name_record->stringLength); |
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220 | if (lang == 0 || lang == 9) { |
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221 | k = ntohs(name_record->nameID); |
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222 | if (k < 8) { |
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223 | p = string_area + ntohs(name_record->stringOffset); |
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224 | name_fields[k] = dupcnstring(p, len); |
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225 | } |
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226 | } |
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227 | } |
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228 | name_record++; |
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229 | } |
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230 | |
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231 | string_area = (char *) name_table + ntohs(name_table->offset); |
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232 | name_record = &(name_table->nameRecords); |
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233 | |
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234 | if (!found3) { |
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235 | for (j = 0; j < ntohs(name_table->numberOfNameRecords); j++) { |
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236 | |
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237 | platform = ntohs(name_record->platformID); |
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238 | |
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239 | if (platform == 1) { |
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240 | |
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241 | found3 = 1; |
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242 | lang = ntohs(name_record->languageID) & 0xff; |
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243 | len = ntohs(name_record->stringLength); |
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244 | if (lang == 0 || lang == 9) { |
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245 | k = ntohs(name_record->nameID); |
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246 | if (k < 8) { |
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247 | p = string_area + ntohs(name_record->stringOffset); |
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248 | name_fields[k] = dupcnstring(p, len); |
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249 | } |
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250 | } |
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251 | } |
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252 | name_record++; |
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253 | } |
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254 | } |
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255 | if (!found3) { |
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256 | fprintf(stderr, "**** Cannot decode font name fields ****\n"); |
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257 | exit(1); |
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258 | } |
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259 | if (name_fields[4][0] == 0) { /* Full Name empty, use Family Name */ |
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260 | name_fields[4] = name_fields[1]; |
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261 | } |
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262 | if (name_fields[6][0] == 0) { /* Font Name empty, use Full Name */ |
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263 | name_fields[6] = name_fields[4]; |
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264 | if (name_fields[6][0] == 0) { /* oops, empty again */ |
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265 | WARNING_1 fprintf(stderr, "Font name is unknown, setting to \"Unknown\"\n"); |
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266 | name_fields[6] = "Unknown"; |
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267 | } |
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268 | } |
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269 | p = name_fields[6]; |
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270 | /* must not start with a digit */ |
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271 | if(isdigit(*p)) |
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272 | *p+= 'A'-'0'; /* change to a letter */ |
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273 | while (*p != '\0') { |
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274 | if (!isalnum(*p) || *p=='_') { |
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275 | *p = '-'; |
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276 | } |
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277 | p++; |
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278 | } |
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279 | } |
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280 | |
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281 | static void |
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282 | handle_head(void) |
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283 | { |
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284 | long_offsets = ntohs(head_table->indexToLocFormat); |
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285 | if (long_offsets != 0 && long_offsets != 1) { |
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286 | fprintf(stderr, "**** indexToLocFormat wrong ****\n"); |
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287 | exit(1); |
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288 | } |
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289 | } |
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290 | |
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291 | /* limit the recursion level to avoid cycles */ |
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292 | #define MAX_COMPOSITE_LEVEL 20 |
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293 | |
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294 | static void |
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295 | draw_composite_glyf( |
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296 | GLYPH *g, |
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297 | GLYPH *glyph_list, |
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298 | int glyphno, |
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299 | double *orgmatrix, |
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300 | int level |
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301 | ) |
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302 | { |
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303 | int len; |
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304 | short ncontours; |
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305 | USHORT flagbyte, glyphindex; |
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306 | double arg1, arg2; |
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307 | BYTE *ptr; |
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308 | char *bptr; |
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309 | SHORT *sptr; |
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310 | double matrix[6], newmatrix[6]; |
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311 | |
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312 | get_glyf_table(glyphno, &glyf_table, &len); |
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313 | |
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314 | if(len<=0) /* nothing to do */ |
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315 | return; |
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316 | |
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317 | ncontours = ntohs(glyf_table->numberOfContours); |
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318 | if (ncontours >= 0) { /* simple case */ |
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319 | draw_simple_glyf(g, glyph_list, glyphno, orgmatrix); |
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320 | return; |
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321 | } |
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322 | |
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323 | if(ISDBG(COMPOSITE) && level ==0) |
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324 | fprintf(stderr, "* %s [ %.2f %.2f %.2f %.2f %.2f %.2f ]\n", g->name, |
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325 | orgmatrix[0], orgmatrix[1], orgmatrix[2], orgmatrix[3], |
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326 | orgmatrix[4], orgmatrix[5]); |
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327 | |
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328 | /* complex case */ |
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329 | if(level >= MAX_COMPOSITE_LEVEL) { |
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330 | WARNING_1 fprintf(stderr, |
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331 | "*** Glyph %s: stopped (possibly infinite) recursion at depth %d\n", |
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332 | g->name, level); |
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333 | return; |
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334 | } |
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335 | |
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336 | ptr = ((BYTE *) glyf_table + sizeof(TTF_GLYF)); |
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337 | sptr = (SHORT *) ptr; |
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338 | do { |
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339 | flagbyte = ntohs(*sptr); |
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340 | sptr++; |
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341 | glyphindex = ntohs(*sptr); |
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342 | sptr++; |
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343 | |
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344 | if (flagbyte & ARG_1_AND_2_ARE_WORDS) { |
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345 | arg1 = (short)ntohs(*sptr); |
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346 | sptr++; |
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347 | arg2 = (short)ntohs(*sptr); |
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348 | sptr++; |
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349 | } else { |
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350 | bptr = (char *) sptr; |
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351 | arg1 = (signed char) bptr[0]; |
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352 | arg2 = (signed char) bptr[1]; |
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353 | sptr++; |
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354 | } |
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355 | matrix[1] = matrix[2] = 0.0; |
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356 | |
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357 | if (flagbyte & WE_HAVE_A_SCALE) { |
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358 | matrix[0] = matrix[3] = f2dot14(*sptr); |
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359 | sptr++; |
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360 | } else if (flagbyte & WE_HAVE_AN_X_AND_Y_SCALE) { |
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361 | matrix[0] = f2dot14(*sptr); |
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362 | sptr++; |
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363 | matrix[3] = f2dot14(*sptr); |
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364 | sptr++; |
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365 | } else if (flagbyte & WE_HAVE_A_TWO_BY_TWO) { |
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366 | matrix[0] = f2dot14(*sptr); |
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367 | sptr++; |
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368 | matrix[2] = f2dot14(*sptr); |
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369 | sptr++; |
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370 | matrix[1] = f2dot14(*sptr); |
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371 | sptr++; |
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372 | matrix[3] = f2dot14(*sptr); |
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373 | sptr++; |
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374 | } else { |
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375 | matrix[0] = matrix[3] = 1.0; |
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376 | } |
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377 | |
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378 | /* |
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379 | * See * |
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380 | * http://fonts.apple.com/TTRefMan/RM06/Chap6g |
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381 | * lyf.html * matrix[0,1,2,3,4,5]=a,b,c,d,m,n |
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382 | */ |
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383 | |
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384 | if (fabs(matrix[0]) > fabs(matrix[1])) |
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385 | matrix[4] = fabs(matrix[0]); |
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386 | else |
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387 | matrix[4] = fabs(matrix[1]); |
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388 | if (fabs(fabs(matrix[0]) - fabs(matrix[2])) <= 33. / 65536.) |
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389 | matrix[4] *= 2.0; |
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390 | |
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391 | if (fabs(matrix[2]) > fabs(matrix[3])) |
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392 | matrix[5] = fabs(matrix[2]); |
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393 | else |
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394 | matrix[5] = fabs(matrix[3]); |
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395 | if (fabs(fabs(matrix[2]) - fabs(matrix[3])) <= 33. / 65536.) |
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396 | matrix[5] *= 2.0; |
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397 | |
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398 | /* |
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399 | * fprintf (stderr,"Matrix Opp %hd |
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400 | * %hd\n",arg1,arg2); |
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401 | */ |
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402 | #if 0 |
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403 | fprintf(stderr, "Matrix: %f %f %f %f %f %f\n", |
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404 | matrix[0], matrix[1], matrix[2], matrix[3], |
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405 | matrix[4], matrix[5]); |
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406 | fprintf(stderr, "Offset: %f %f (%s)\n", |
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407 | arg1, arg2, |
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408 | ((flagbyte & ARGS_ARE_XY_VALUES) ? "XY" : "index")); |
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409 | #endif |
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410 | |
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411 | if (flagbyte & ARGS_ARE_XY_VALUES) { |
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412 | matrix[4] *= arg1; |
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413 | matrix[5] *= arg2; |
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414 | } else { |
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415 | WARNING_1 fprintf(stderr, |
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416 | "*** Glyph %s: reusing scale from another glyph is unsupported\n", |
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417 | g->name); |
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418 | /* |
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419 | * must extract values from a glyph |
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420 | * but it seems to be too much pain |
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421 | * and it's not clear now that it |
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422 | * would be really used in any |
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423 | * interesting font |
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424 | */ |
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425 | } |
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426 | |
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427 | /* at this point arg1,arg2 contain what logically should be matrix[4,5] */ |
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428 | |
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429 | /* combine matrices */ |
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430 | |
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431 | newmatrix[0] = orgmatrix[0]*matrix[0] + orgmatrix[2]*matrix[1]; |
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432 | newmatrix[1] = orgmatrix[0]*matrix[2] + orgmatrix[2]*matrix[3]; |
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433 | |
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434 | newmatrix[2] = orgmatrix[1]*matrix[0] + orgmatrix[3]*matrix[1]; |
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435 | newmatrix[3] = orgmatrix[1]*matrix[2] + orgmatrix[3]*matrix[3]; |
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436 | |
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437 | newmatrix[4] = orgmatrix[0]*matrix[4] + orgmatrix[2]*matrix[5] + orgmatrix[4]; |
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438 | newmatrix[5] = orgmatrix[1]*matrix[4] + orgmatrix[3]*matrix[5] + orgmatrix[5]; |
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439 | |
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440 | if(ISDBG(COMPOSITE)) { |
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441 | fprintf(stderr, "%*c+-> %2d %s [ %.2f %.2f %.2f %.2f %.2f %.2f ]\n", |
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442 | level+1, ' ', level, glyph_list[glyphindex].name, |
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443 | matrix[0], matrix[1], matrix[2], matrix[3], |
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444 | matrix[4], matrix[5]); |
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445 | fprintf(stderr, "%*c = [ %.2f %.2f %.2f %.2f %.2f %.2f ]\n", |
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446 | level+1, ' ', |
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447 | newmatrix[0], newmatrix[1], newmatrix[2], newmatrix[3], |
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448 | newmatrix[4], newmatrix[5]); |
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449 | } |
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450 | draw_composite_glyf(g, glyph_list, glyphindex, newmatrix, level+1); |
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451 | |
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452 | } while (flagbyte & MORE_COMPONENTS); |
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453 | } |
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454 | |
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455 | static void |
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456 | draw_simple_glyf( |
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457 | GLYPH *g, |
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458 | GLYPH *glyph_list, |
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459 | int glyphno, |
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460 | double *matrix |
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461 | ) |
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462 | { |
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463 | int i, j, k, k1, len, first, cs, ce; |
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464 | /* We assume that hsbw always sets to(0, 0) */ |
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465 | double xlast = 0, ylast = 0; |
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466 | int finished, nguide, contour_start, contour_end; |
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467 | short ncontours, n_inst, last_point; |
---|
468 | USHORT *contour_end_pt; |
---|
469 | BYTE *ptr; |
---|
470 | #define GLYFSZ 2000 |
---|
471 | short xabs[GLYFSZ], yabs[GLYFSZ], xrel[GLYFSZ], yrel[GLYFSZ]; |
---|
472 | double xcoord[GLYFSZ], ycoord[GLYFSZ]; |
---|
473 | BYTE flags[GLYFSZ]; |
---|
474 | double tx, ty; |
---|
475 | int needreverse = 0; /* transformation may require |
---|
476 | * that */ |
---|
477 | GENTRY *lge; |
---|
478 | |
---|
479 | lge = g->lastentry; |
---|
480 | |
---|
481 | get_glyf_table(glyphno, &glyf_table, &len); |
---|
482 | |
---|
483 | if (len <= 0) { |
---|
484 | WARNING_1 fprintf(stderr, |
---|
485 | "**** Composite glyph %s refers to non-existent glyph %s, ignored\n", |
---|
486 | g->name, |
---|
487 | glyph_list[glyphno].name); |
---|
488 | return; |
---|
489 | } |
---|
490 | ncontours = ntohs(glyf_table->numberOfContours); |
---|
491 | if (ncontours < 0) { |
---|
492 | WARNING_1 fprintf(stderr, |
---|
493 | "**** Composite glyph %s refers to composite glyph %s, ignored\n", |
---|
494 | g->name, |
---|
495 | glyph_list[glyphno].name); |
---|
496 | return; |
---|
497 | } |
---|
498 | contour_end_pt = (USHORT *) ((char *) glyf_table + sizeof(TTF_GLYF)); |
---|
499 | |
---|
500 | last_point = ntohs(contour_end_pt[ncontours - 1]); |
---|
501 | n_inst = ntohs(contour_end_pt[ncontours]); |
---|
502 | |
---|
503 | ptr = ((BYTE *) contour_end_pt) + (ncontours << 1) + n_inst + 2; |
---|
504 | j = k = 0; |
---|
505 | while (k <= last_point) { |
---|
506 | flags[k] = ptr[j]; |
---|
507 | |
---|
508 | if (ptr[j] & REPEAT) { |
---|
509 | for (k1 = 0; k1 < ptr[j + 1]; k1++) { |
---|
510 | k++; |
---|
511 | flags[k] = ptr[j]; |
---|
512 | } |
---|
513 | j++; |
---|
514 | } |
---|
515 | j++; |
---|
516 | k++; |
---|
517 | } |
---|
518 | |
---|
519 | for (k = 0; k <= last_point; k++) { |
---|
520 | if (flags[k] & XSHORT) { |
---|
521 | if (flags[k] & XSAME) { |
---|
522 | xrel[k] = ptr[j]; |
---|
523 | } else { |
---|
524 | xrel[k] = -ptr[j]; |
---|
525 | } |
---|
526 | j++; |
---|
527 | } else if (flags[k] & XSAME) { |
---|
528 | xrel[k] = 0.0; |
---|
529 | } else { |
---|
530 | xrel[k] = (short)( ptr[j] * 256 + ptr[j + 1] ); |
---|
531 | j += 2; |
---|
532 | } |
---|
533 | if (k == 0) { |
---|
534 | xabs[k] = xrel[k]; |
---|
535 | } else { |
---|
536 | xabs[k] = xrel[k] + xabs[k - 1]; |
---|
537 | } |
---|
538 | |
---|
539 | } |
---|
540 | |
---|
541 | for (k = 0; k <= last_point; k++) { |
---|
542 | if (flags[k] & YSHORT) { |
---|
543 | if (flags[k] & YSAME) { |
---|
544 | yrel[k] = ptr[j]; |
---|
545 | } else { |
---|
546 | yrel[k] = -ptr[j]; |
---|
547 | } |
---|
548 | j++; |
---|
549 | } else if (flags[k] & YSAME) { |
---|
550 | yrel[k] = 0; |
---|
551 | } else { |
---|
552 | yrel[k] = ptr[j] * 256 + ptr[j + 1]; |
---|
553 | j += 2; |
---|
554 | } |
---|
555 | if (k == 0) { |
---|
556 | yabs[k] = yrel[k]; |
---|
557 | } else { |
---|
558 | yabs[k] = yrel[k] + yabs[k - 1]; |
---|
559 | } |
---|
560 | } |
---|
561 | |
---|
562 | if (matrix) { |
---|
563 | for (i = 0; i <= last_point; i++) { |
---|
564 | tx = xabs[i]; |
---|
565 | ty = yabs[i]; |
---|
566 | xcoord[i] = fscale(matrix[0] * tx + matrix[2] * ty + matrix[4]); |
---|
567 | ycoord[i] = fscale(matrix[1] * tx + matrix[3] * ty + matrix[5]); |
---|
568 | } |
---|
569 | } else { |
---|
570 | for (i = 0; i <= last_point; i++) { |
---|
571 | xcoord[i] = fscale(xabs[i]); |
---|
572 | ycoord[i] = fscale(yabs[i]); |
---|
573 | } |
---|
574 | } |
---|
575 | |
---|
576 | i = j = 0; |
---|
577 | first = 1; |
---|
578 | |
---|
579 | while (i <= ntohs(contour_end_pt[ncontours - 1])) { |
---|
580 | contour_end = ntohs(contour_end_pt[j]); |
---|
581 | |
---|
582 | if (first) { |
---|
583 | fg_rmoveto(g, xcoord[i], ycoord[i]); |
---|
584 | xlast = xcoord[i]; |
---|
585 | ylast = ycoord[i]; |
---|
586 | contour_start = i; |
---|
587 | first = 0; |
---|
588 | } else if (flags[i] & ONOROFF) { |
---|
589 | fg_rlineto(g, xcoord[i], ycoord[i]); |
---|
590 | xlast = xcoord[i]; |
---|
591 | ylast = ycoord[i]; |
---|
592 | } else { |
---|
593 | cs = i - 1; |
---|
594 | finished = nguide = 0; |
---|
595 | while (!finished) { |
---|
596 | if (i == contour_end + 1) { |
---|
597 | ce = contour_start; |
---|
598 | finished = 1; |
---|
599 | } else if (flags[i] & ONOROFF) { |
---|
600 | ce = i; |
---|
601 | finished = 1; |
---|
602 | } else { |
---|
603 | i++; |
---|
604 | nguide++; |
---|
605 | } |
---|
606 | } |
---|
607 | |
---|
608 | switch (nguide) { |
---|
609 | case 0: |
---|
610 | fg_rlineto(g, xcoord[ce], ycoord[ce]); |
---|
611 | xlast = xcoord[ce]; |
---|
612 | ylast = ycoord[ce]; |
---|
613 | break; |
---|
614 | |
---|
615 | case 1: |
---|
616 | fg_rrcurveto(g, |
---|
617 | (xcoord[cs] + 2.0 * xcoord[cs + 1]) / 3.0, |
---|
618 | (ycoord[cs] + 2.0 * ycoord[cs + 1]) / 3.0, |
---|
619 | (2.0 * xcoord[cs + 1] + xcoord[ce]) / 3.0, |
---|
620 | (2.0 * ycoord[cs + 1] + ycoord[ce]) / 3.0, |
---|
621 | xcoord[ce], |
---|
622 | ycoord[ce] |
---|
623 | ); |
---|
624 | xlast = xcoord[ce]; |
---|
625 | ylast = ycoord[ce]; |
---|
626 | |
---|
627 | break; |
---|
628 | |
---|
629 | case 2: |
---|
630 | fg_rrcurveto(g, |
---|
631 | (-xcoord[cs] + 4.0 * xcoord[cs + 1]) / 3.0, |
---|
632 | (-ycoord[cs] + 4.0 * ycoord[cs + 1]) / 3.0, |
---|
633 | (4.0 * xcoord[cs + 2] - xcoord[ce]) / 3.0, |
---|
634 | (4.0 * ycoord[cs + 2] - ycoord[ce]) / 3.0, |
---|
635 | xcoord[ce], |
---|
636 | ycoord[ce] |
---|
637 | ); |
---|
638 | xlast = xcoord[ce]; |
---|
639 | ylast = ycoord[ce]; |
---|
640 | break; |
---|
641 | |
---|
642 | case 3: |
---|
643 | fg_rrcurveto(g, |
---|
644 | (xcoord[cs] + 2.0 * xcoord[cs + 1]) / 3.0, |
---|
645 | (ycoord[cs] + 2.0 * ycoord[cs + 1]) / 3.0, |
---|
646 | (5.0 * xcoord[cs + 1] + xcoord[cs + 2]) / 6.0, |
---|
647 | (5.0 * ycoord[cs + 1] + ycoord[cs + 2]) / 6.0, |
---|
648 | (xcoord[cs + 1] + xcoord[cs + 2]) / 2.0, |
---|
649 | (ycoord[cs + 1] + ycoord[cs + 2]) / 2.0 |
---|
650 | ); |
---|
651 | |
---|
652 | fg_rrcurveto(g, |
---|
653 | (xcoord[cs + 1] + 5.0 * xcoord[cs + 2]) / 6.0, |
---|
654 | (ycoord[cs + 1] + 5.0 * ycoord[cs + 2]) / 6.0, |
---|
655 | (5.0 * xcoord[cs + 2] + xcoord[cs + 3]) / 6.0, |
---|
656 | (5.0 * ycoord[cs + 2] + ycoord[cs + 3]) / 6.0, |
---|
657 | (xcoord[cs + 3] + xcoord[cs + 2]) / 2.0, |
---|
658 | (ycoord[cs + 3] + ycoord[cs + 2]) / 2.0 |
---|
659 | ); |
---|
660 | |
---|
661 | fg_rrcurveto(g, |
---|
662 | (xcoord[cs + 2] + 5.0 * xcoord[cs + 3]) / 6.0, |
---|
663 | (ycoord[cs + 2] + 5.0 * ycoord[cs + 3]) / 6.0, |
---|
664 | (2.0 * xcoord[cs + 3] + xcoord[ce]) / 3.0, |
---|
665 | (2.0 * ycoord[cs + 3] + ycoord[ce]) / 3.0, |
---|
666 | xcoord[ce], |
---|
667 | ycoord[ce] |
---|
668 | ); |
---|
669 | ylast = ycoord[ce]; |
---|
670 | xlast = xcoord[ce]; |
---|
671 | |
---|
672 | break; |
---|
673 | |
---|
674 | default: |
---|
675 | k1 = cs + nguide; |
---|
676 | fg_rrcurveto(g, |
---|
677 | (xcoord[cs] + 2.0 * xcoord[cs + 1]) / 3.0, |
---|
678 | (ycoord[cs] + 2.0 * ycoord[cs + 1]) / 3.0, |
---|
679 | (5.0 * xcoord[cs + 1] + xcoord[cs + 2]) / 6.0, |
---|
680 | (5.0 * ycoord[cs + 1] + ycoord[cs + 2]) / 6.0, |
---|
681 | (xcoord[cs + 1] + xcoord[cs + 2]) / 2.0, |
---|
682 | (ycoord[cs + 1] + ycoord[cs + 2]) / 2.0 |
---|
683 | ); |
---|
684 | |
---|
685 | for (k = cs + 2; k <= k1 - 1; k++) { |
---|
686 | fg_rrcurveto(g, |
---|
687 | (xcoord[k - 1] + 5.0 * xcoord[k]) / 6.0, |
---|
688 | (ycoord[k - 1] + 5.0 * ycoord[k]) / 6.0, |
---|
689 | (5.0 * xcoord[k] + xcoord[k + 1]) / 6.0, |
---|
690 | (5.0 * ycoord[k] + ycoord[k + 1]) / 6.0, |
---|
691 | (xcoord[k] + xcoord[k + 1]) / 2.0, |
---|
692 | (ycoord[k] + ycoord[k + 1]) / 2.0 |
---|
693 | ); |
---|
694 | |
---|
695 | } |
---|
696 | |
---|
697 | fg_rrcurveto(g, |
---|
698 | (xcoord[k1 - 1] + 5.0 * xcoord[k1]) / 6.0, |
---|
699 | (ycoord[k1 - 1] + 5.0 * ycoord[k1]) / 6.0, |
---|
700 | (2.0 * xcoord[k1] + xcoord[ce]) / 3.0, |
---|
701 | (2.0 * ycoord[k1] + ycoord[ce]) / 3.0, |
---|
702 | xcoord[ce], |
---|
703 | ycoord[ce] |
---|
704 | ); |
---|
705 | xlast = xcoord[ce]; |
---|
706 | ylast = ycoord[ce]; |
---|
707 | |
---|
708 | break; |
---|
709 | } |
---|
710 | } |
---|
711 | if (i >= contour_end) { |
---|
712 | g_closepath(g); |
---|
713 | first = 1; |
---|
714 | i = contour_end + 1; |
---|
715 | j++; |
---|
716 | } else { |
---|
717 | i++; |
---|
718 | } |
---|
719 | } |
---|
720 | |
---|
721 | if (matrix) { |
---|
722 | /* guess whether do we need to reverse the results */ |
---|
723 | |
---|
724 | double x[3], y[3]; |
---|
725 | int max = 0, from, to; |
---|
726 | |
---|
727 | /* transform a triangle going in proper direction */ |
---|
728 | /* |
---|
729 | * the origin of triangle is in (0,0) so we know it in |
---|
730 | * advance |
---|
731 | */ |
---|
732 | |
---|
733 | x[0] = y[0] = 0; |
---|
734 | x[1] = matrix[0] * 0 + matrix[2] * 300; |
---|
735 | y[1] = matrix[1] * 0 + matrix[3] * 300; |
---|
736 | x[2] = matrix[0] * 300 + matrix[2] * 0; |
---|
737 | y[2] = matrix[1] * 300 + matrix[3] * 0; |
---|
738 | |
---|
739 | /* then find the topmost point */ |
---|
740 | for (i = 0; i < 3; i++) |
---|
741 | if (y[i] > y[max]) |
---|
742 | max = i; |
---|
743 | from = (max + 3 - 1) % 3; |
---|
744 | to = (max + 1) % 3; |
---|
745 | |
---|
746 | needreverse = 0; |
---|
747 | |
---|
748 | /* special cases for horizontal lines */ |
---|
749 | if (y[max] == y[from]) { |
---|
750 | if (x[max] < y[from]) |
---|
751 | needreverse = 1; |
---|
752 | } else if (y[to] == y[from]) { |
---|
753 | if (x[to] < x[max]) |
---|
754 | needreverse = 1; |
---|
755 | } else { /* generic case */ |
---|
756 | if ((x[to] - x[max]) * (y[max] - y[from]) |
---|
757 | > (x[max] - x[from]) * (y[to] - y[max])) |
---|
758 | needreverse = 1; |
---|
759 | } |
---|
760 | |
---|
761 | if (needreverse) { |
---|
762 | if (lge) { |
---|
763 | assertpath(lge->next, __FILE__, __LINE__, g->name); |
---|
764 | reversepathsfromto(lge->next, NULL); |
---|
765 | } else { |
---|
766 | assertpath(g->entries, __FILE__, __LINE__, g->name); |
---|
767 | reversepaths(g); |
---|
768 | } |
---|
769 | } |
---|
770 | } |
---|
771 | } |
---|
772 | |
---|
773 | static double |
---|
774 | f2dot14( |
---|
775 | short x |
---|
776 | ) |
---|
777 | { |
---|
778 | short y = ntohs(x); |
---|
779 | return (y >> 14) + ((y & 0x3fff) / 16384.0); |
---|
780 | } |
---|
781 | |
---|
782 | |
---|
783 | /* check that the pointer points within the file */ |
---|
784 | /* returns 0 if pointer is good, 1 if bad */ |
---|
785 | static int |
---|
786 | badpointer( |
---|
787 | void *ptr |
---|
788 | ) |
---|
789 | { |
---|
790 | return (ptr < (void *)filebuffer || ptr >= (void *)filebuffer_end); |
---|
791 | } |
---|
792 | |
---|
793 | /* |
---|
794 | * Externally accessible methods |
---|
795 | */ |
---|
796 | |
---|
797 | /* |
---|
798 | * Open font and prepare to return information to the main driver. |
---|
799 | * May print error and warning messages. |
---|
800 | * Exit on error. |
---|
801 | */ |
---|
802 | |
---|
803 | static void |
---|
804 | openfont( |
---|
805 | char *fname, |
---|
806 | char *arg /* unused now */ |
---|
807 | ) |
---|
808 | { |
---|
809 | int i, j; |
---|
810 | struct stat statbuf; |
---|
811 | static struct { |
---|
812 | void **tbpp; /* pointer to pointer to the table */ |
---|
813 | char name[5]; /* table name */ |
---|
814 | char optional; /* flag: table may be missing */ |
---|
815 | } tables[] = { |
---|
816 | { (void **)&name_table, "name", 0 }, |
---|
817 | { (void **)&head_table, "head", 0 }, |
---|
818 | { (void **)&hhea_table, "hhea", 0 }, |
---|
819 | { (void **)&post_table, "post", 0 }, |
---|
820 | { (void **)&glyf_start, "glyf", 0 }, |
---|
821 | { (void **)&cmap_table, "cmap", 0 }, |
---|
822 | { (void **)&kern_table, "kern", 1 }, |
---|
823 | { (void **)&maxp_table, "maxp", 0 }, |
---|
824 | { (void **)&hmtx_table, "hmtx", 0 }, |
---|
825 | { (void **)&long_loca_table, "loca", 0 }, |
---|
826 | { NULL, "", 0 } /* end of table */ |
---|
827 | }; |
---|
828 | |
---|
829 | if (stat(fname, &statbuf) == -1) { |
---|
830 | fprintf(stderr, "**** Cannot access %s ****\n", fname); |
---|
831 | exit(1); |
---|
832 | } |
---|
833 | if ((filebuffer = malloc(statbuf.st_size)) == NULL) { |
---|
834 | fprintf(stderr, "**** Cannot malloc space for file ****\n"); |
---|
835 | exit(1); |
---|
836 | } |
---|
837 | |
---|
838 | filebuffer_end = filebuffer + statbuf.st_size; |
---|
839 | |
---|
840 | if ((ttf_file = fopen(fname, "rb")) == NULL) { |
---|
841 | fprintf(stderr, "**** Cannot open file '%s'\n", fname); |
---|
842 | exit(1); |
---|
843 | } else { |
---|
844 | WARNING_2 fprintf(stderr, "Processing file %s\n", fname); |
---|
845 | } |
---|
846 | |
---|
847 | if (fread(filebuffer, 1, statbuf.st_size, ttf_file) != statbuf.st_size) { |
---|
848 | fprintf(stderr, "**** Could not read whole file \n"); |
---|
849 | exit(1); |
---|
850 | } |
---|
851 | fclose(ttf_file); |
---|
852 | |
---|
853 | directory = (TTF_DIRECTORY *) filebuffer; |
---|
854 | |
---|
855 | if (ntohl(directory->sfntVersion) != 0x00010000) { |
---|
856 | fprintf(stderr, |
---|
857 | "**** Unknown File Version number [%x], or not a TrueType file\n", |
---|
858 | directory->sfntVersion); |
---|
859 | exit(1); |
---|
860 | } |
---|
861 | |
---|
862 | /* clear the tables */ |
---|
863 | for(j=0; tables[j].tbpp != NULL; j++) |
---|
864 | *(tables[j].tbpp) = NULL; |
---|
865 | |
---|
866 | dir_entry = &(directory->list); |
---|
867 | |
---|
868 | for (i = 0; i < ntohs(directory->numTables); i++) { |
---|
869 | |
---|
870 | for(j=0; tables[j].tbpp != NULL; j++) |
---|
871 | if (memcmp(dir_entry->tag, tables[j].name, 4) == 0) { |
---|
872 | *(tables[j].tbpp) = (void *) (filebuffer + ntohl(dir_entry->offset)); |
---|
873 | break; |
---|
874 | } |
---|
875 | |
---|
876 | if (memcmp(dir_entry->tag, "EBDT", 4) == 0 || |
---|
877 | memcmp(dir_entry->tag, "EBLC", 4) == 0 || |
---|
878 | memcmp(dir_entry->tag, "EBSC", 4) == 0) { |
---|
879 | WARNING_1 fprintf(stderr, "Font contains bitmaps\n"); |
---|
880 | } |
---|
881 | dir_entry++; |
---|
882 | } |
---|
883 | |
---|
884 | for(j=0; tables[j].tbpp != NULL; j++) |
---|
885 | if(!tables[j].optional && badpointer( *(tables[j].tbpp) )) { |
---|
886 | fprintf(stderr, "**** File contains no required table '%s'\n", tables[j].name); |
---|
887 | exit(1); |
---|
888 | } |
---|
889 | |
---|
890 | handle_name(); |
---|
891 | |
---|
892 | handle_head(); |
---|
893 | |
---|
894 | ttf_nglyphs = ntohs(maxp_table->numGlyphs); |
---|
895 | |
---|
896 | enc_found_ms = enc_found_mac = 0; |
---|
897 | } |
---|
898 | |
---|
899 | /* |
---|
900 | * Close font. |
---|
901 | * Exit on error. |
---|
902 | */ |
---|
903 | |
---|
904 | static void |
---|
905 | closefont( |
---|
906 | void |
---|
907 | ) |
---|
908 | { |
---|
909 | return; /* empty operation */ |
---|
910 | } |
---|
911 | |
---|
912 | /* |
---|
913 | * Get the number of glyphs in font. |
---|
914 | */ |
---|
915 | |
---|
916 | static int |
---|
917 | getnglyphs ( |
---|
918 | void |
---|
919 | ) |
---|
920 | { |
---|
921 | return ttf_nglyphs; |
---|
922 | } |
---|
923 | |
---|
924 | /* |
---|
925 | * Get the names of the glyphs. |
---|
926 | * Returns 0 if the names were assigned, non-zero if the font |
---|
927 | * provides no glyph names. |
---|
928 | */ |
---|
929 | |
---|
930 | static int |
---|
931 | glnames( |
---|
932 | GLYPH *glyph_list |
---|
933 | ) |
---|
934 | { |
---|
935 | int i, len, n, npost; |
---|
936 | unsigned int format; |
---|
937 | USHORT *name_index; |
---|
938 | char *ptr, *p; |
---|
939 | char **ps_name_ptr = (char **) malloc(ttf_nglyphs * sizeof(char *)); |
---|
940 | int n_ps_names; |
---|
941 | int ps_fmt_3 = 0; |
---|
942 | |
---|
943 | format = ntohl(post_table->formatType); |
---|
944 | |
---|
945 | if (format == 0x00010000) { |
---|
946 | for (i = 0; i < 258 && i < ttf_nglyphs; i++) { |
---|
947 | glyph_list[i].name = mac_glyph_names[i]; |
---|
948 | } |
---|
949 | } else if (format == 0x00020000) { |
---|
950 | npost = ntohs(post_table->numGlyphs); |
---|
951 | if (ttf_nglyphs != npost) { |
---|
952 | /* This is an error in the font, but we can now cope */ |
---|
953 | WARNING_1 fprintf(stderr, "**** Postscript table size mismatch %d/%d ****\n", |
---|
954 | npost, ttf_nglyphs); |
---|
955 | } |
---|
956 | n_ps_names = 0; |
---|
957 | name_index = &(post_table->glyphNameIndex); |
---|
958 | |
---|
959 | /* This checks the integrity of the post table */ |
---|
960 | for (i=0; i<npost; i++) { |
---|
961 | n = ntohs(name_index[i]); |
---|
962 | if (n > n_ps_names + 257) { |
---|
963 | n_ps_names = n - 257; |
---|
964 | } |
---|
965 | } |
---|
966 | |
---|
967 | ptr = (char *) post_table + 34 + (ttf_nglyphs << 1); |
---|
968 | i = 0; |
---|
969 | while (*ptr > 0 && i < n_ps_names) { |
---|
970 | len = *ptr; |
---|
971 | /* previously the program wrote nulls into the table. If the table |
---|
972 | was corrupt, this could put zeroes anywhere, leading to obscure bugs, |
---|
973 | so now I malloc space for the names. Yes it is much less efficient */ |
---|
974 | |
---|
975 | if ((p = malloc(len+1)) == NULL) { |
---|
976 | fprintf (stderr, "****malloc failed %s line %d\n", __FILE__, __LINE__); |
---|
977 | exit(255); |
---|
978 | } |
---|
979 | |
---|
980 | ps_name_ptr[i] = p; |
---|
981 | strncpy(p, ptr+1, len); |
---|
982 | p[len] = '\0'; |
---|
983 | i ++; |
---|
984 | ptr += len + 1; |
---|
985 | } |
---|
986 | |
---|
987 | if (i != n_ps_names) |
---|
988 | { |
---|
989 | WARNING_2 fprintf (stderr, "** Postscript Name mismatch %d != %d **\n", |
---|
990 | i, n_ps_names); |
---|
991 | n_ps_names = i; |
---|
992 | } |
---|
993 | |
---|
994 | /* |
---|
995 | * for (i=0; i<n_ps_names; i++) { fprintf(stderr, "i=%d, |
---|
996 | * len=%d, name=%s\n", i, ps_name_len[i], ps_name_ptr[i]); } |
---|
997 | */ |
---|
998 | |
---|
999 | for (i = 0; i < npost; i++) { |
---|
1000 | n = ntohs(name_index[i]); |
---|
1001 | if (n < 258) { |
---|
1002 | glyph_list[i].name = mac_glyph_names[n]; |
---|
1003 | } else if (n < 258 + n_ps_names) { |
---|
1004 | glyph_list[i].name = ps_name_ptr[n - 258]; |
---|
1005 | } else { |
---|
1006 | glyph_list[i].name = malloc(16); |
---|
1007 | sprintf(glyph_list[i].name, "_g_%d", i); |
---|
1008 | WARNING_2 fprintf(stderr, |
---|
1009 | "Glyph No. %d has no postscript name, becomes %s\n", |
---|
1010 | i, glyph_list[i].name); |
---|
1011 | } |
---|
1012 | } |
---|
1013 | /* Now fake postscript names for all those beyond the end of the table */ |
---|
1014 | if (npost < ttf_nglyphs) { |
---|
1015 | for (i=npost; i<ttf_nglyphs; i++) { |
---|
1016 | if ((glyph_list[i].name = malloc(16)) == NULL) |
---|
1017 | { |
---|
1018 | fprintf (stderr, "****malloc failed %s line %d\n", __FILE__, __LINE__); |
---|
1019 | exit(255); |
---|
1020 | } |
---|
1021 | sprintf(glyph_list[i].name, "_g_%d", i); |
---|
1022 | WARNING_2 fprintf(stderr, |
---|
1023 | "Glyph No. %d has no postscript name, becomes %s\n", |
---|
1024 | i, glyph_list[i].name); |
---|
1025 | } |
---|
1026 | } |
---|
1027 | } else if (format == 0x00030000) { |
---|
1028 | WARNING_3 fputs("No postscript table, using default\n", stderr); |
---|
1029 | ps_fmt_3 = 1; |
---|
1030 | } else if (format == 0x00028000) { |
---|
1031 | ptr = (char *) &(post_table->numGlyphs); |
---|
1032 | for (i = 0; i < ttf_nglyphs; i++) { |
---|
1033 | glyph_list[i].name = mac_glyph_names[i + ptr[i]]; |
---|
1034 | } |
---|
1035 | } else { |
---|
1036 | fprintf(stderr, |
---|
1037 | "**** Postscript table in wrong format %x ****\n", |
---|
1038 | format); |
---|
1039 | exit(1); |
---|
1040 | } |
---|
1041 | |
---|
1042 | return ps_fmt_3; |
---|
1043 | } |
---|
1044 | |
---|
1045 | /* |
---|
1046 | * Get the metrics of the glyphs. |
---|
1047 | */ |
---|
1048 | |
---|
1049 | static void |
---|
1050 | glmetrics( |
---|
1051 | GLYPH *glyph_list |
---|
1052 | ) |
---|
1053 | { |
---|
1054 | int i; |
---|
1055 | int n_hmetrics = ntohs(hhea_table->numberOfHMetrics); |
---|
1056 | GLYPH *g; |
---|
1057 | LONGHORMETRIC *hmtx_entry = hmtx_table; |
---|
1058 | FWORD *lsblist; |
---|
1059 | |
---|
1060 | for (i = 0; i < n_hmetrics; i++) { |
---|
1061 | g = &(glyph_list[i]); |
---|
1062 | g->width = ntohs(hmtx_entry->advanceWidth); |
---|
1063 | g->lsb = ntohs(hmtx_entry->lsb); |
---|
1064 | hmtx_entry++; |
---|
1065 | } |
---|
1066 | |
---|
1067 | lsblist = (FWORD *) hmtx_entry; |
---|
1068 | hmtx_entry--; |
---|
1069 | |
---|
1070 | for (i = n_hmetrics; i < ttf_nglyphs; i++) { |
---|
1071 | g = &(glyph_list[i]); |
---|
1072 | g->width = ntohs(hmtx_entry->advanceWidth); |
---|
1073 | g->lsb = ntohs(lsblist[i - n_hmetrics]); |
---|
1074 | } |
---|
1075 | |
---|
1076 | for (i = 0; i < ttf_nglyphs; i++) { |
---|
1077 | g = &(glyph_list[i]); |
---|
1078 | get_glyf_table(i, &glyf_table, &g->ttf_pathlen); |
---|
1079 | |
---|
1080 | g->xMin = (short)ntohs(glyf_table->xMin); |
---|
1081 | g->xMax = (short)ntohs(glyf_table->xMax); |
---|
1082 | g->yMin = (short)ntohs(glyf_table->yMin); |
---|
1083 | g->yMax = (short)ntohs(glyf_table->yMax); |
---|
1084 | } |
---|
1085 | |
---|
1086 | } |
---|
1087 | |
---|
1088 | |
---|
1089 | static void |
---|
1090 | handle_ms_encoding( |
---|
1091 | GLYPH *glyph_list, |
---|
1092 | int *encoding, |
---|
1093 | int *unimap |
---|
1094 | ) |
---|
1095 | { |
---|
1096 | int i, j, k, kk, set_ok; |
---|
1097 | USHORT start, end, ro; |
---|
1098 | short delta, n; |
---|
1099 | |
---|
1100 | for (j = 0; j < cmap_n_segs - 1; j++) { |
---|
1101 | start = ntohs(cmap_seg_start[j]); |
---|
1102 | end = ntohs(cmap_seg_end[j]); |
---|
1103 | delta = ntohs(cmap_idDelta[j]); |
---|
1104 | ro = ntohs(cmap_idRangeOffset[j]); |
---|
1105 | |
---|
1106 | for (k = start; k <= end; k++) { |
---|
1107 | if (ro == 0) { |
---|
1108 | n = k + delta; |
---|
1109 | } else { |
---|
1110 | n = ntohs(*((ro >> 1) + (k - start) + |
---|
1111 | &(cmap_idRangeOffset[j]))); |
---|
1112 | if (delta != 0) |
---|
1113 | { |
---|
1114 | /* Not exactly sure how to deal with this circumstance, |
---|
1115 | I suspect it never occurs */ |
---|
1116 | n += delta; |
---|
1117 | fprintf (stderr, |
---|
1118 | "rangeoffset and delta both non-zero - %d/%d", |
---|
1119 | ro, delta); |
---|
1120 | } |
---|
1121 | } |
---|
1122 | if(n<0 || n>=ttf_nglyphs) { |
---|
1123 | WARNING_1 fprintf(stderr, "Font contains a broken glyph code mapping, ignored\n"); |
---|
1124 | continue; |
---|
1125 | } |
---|
1126 | |
---|
1127 | // Find the first available orig_code slot |
---|
1128 | for (i = 0; i < GLYPH_MAX_ENCODINGS; i++ ) { |
---|
1129 | |
---|
1130 | if ( glyph_list[n].orig_code[i] == -1 ) |
---|
1131 | break; |
---|
1132 | |
---|
1133 | } |
---|
1134 | |
---|
1135 | if ( i == GLYPH_MAX_ENCODINGS ) { |
---|
1136 | //#if 0 |
---|
1137 | if (strcmp(glyph_list[n].name, ".notdef") != 0) { |
---|
1138 | WARNING_2 fprintf(stderr, |
---|
1139 | "Glyph %s has >= %d encodings (A), %4.4x & %4.4x\n", |
---|
1140 | GLYPH_MAX_ENCODINGS, |
---|
1141 | glyph_list[n].name, |
---|
1142 | glyph_list[n].orig_code[0], |
---|
1143 | k); |
---|
1144 | } |
---|
1145 | //#endif |
---|
1146 | set_ok = 0; |
---|
1147 | break; |
---|
1148 | } else { |
---|
1149 | set_ok = 1; |
---|
1150 | } |
---|
1151 | if (enc_type==1 || forcemap) { |
---|
1152 | kk = unicode_rev_lookup(k); |
---|
1153 | if(ISDBG(UNICODE)) |
---|
1154 | fprintf(stderr, "Unicode %s - 0x%04x\n",glyph_list[n].name,k); |
---|
1155 | if (set_ok) { |
---|
1156 | glyph_list[n].orig_code[i] = k; |
---|
1157 | /* glyph_list[n].char_no = kk; */ |
---|
1158 | } |
---|
1159 | if (kk >= 0 && kk < ENCTABSZ && encoding[kk] == -1) |
---|
1160 | encoding[kk] = n; |
---|
1161 | } else { |
---|
1162 | if ((k & 0xff00) == 0xf000) { |
---|
1163 | if( encoding[k & 0x00ff] == -1 ) { |
---|
1164 | encoding[k & 0x00ff] = n; |
---|
1165 | if (set_ok) { |
---|
1166 | /* glyph_list[n].char_no = k & 0x00ff; */ |
---|
1167 | glyph_list[n].orig_code[i] = k; |
---|
1168 | } |
---|
1169 | } |
---|
1170 | } else { |
---|
1171 | if (set_ok) { |
---|
1172 | /* glyph_list[n].char_no = k; */ |
---|
1173 | glyph_list[n].orig_code[i] = k; |
---|
1174 | } |
---|
1175 | WARNING_2 fprintf(stderr, |
---|
1176 | "Glyph %s has non-symbol encoding %4.4x\n", |
---|
1177 | glyph_list[n].name, |
---|
1178 | k & 0xffff); |
---|
1179 | /* |
---|
1180 | * just use the code |
---|
1181 | * as it is |
---|
1182 | */ |
---|
1183 | if ((k & ~0xff) == 0 && encoding[k] == -1 ) |
---|
1184 | encoding[k] = n; |
---|
1185 | } |
---|
1186 | } |
---|
1187 | } |
---|
1188 | } |
---|
1189 | } |
---|
1190 | |
---|
1191 | static void |
---|
1192 | handle_mac_encoding( |
---|
1193 | GLYPH *glyph_list, |
---|
1194 | int *encoding, |
---|
1195 | int *unimap |
---|
1196 | ) |
---|
1197 | { |
---|
1198 | short n; |
---|
1199 | int j, size; |
---|
1200 | |
---|
1201 | size = ntohs(encoding0->length) - 6; |
---|
1202 | for (j = 0; j < size; j++) { |
---|
1203 | n = encoding0->glyphIdArray[j]; |
---|
1204 | if (glyph_list[n].char_no != -1) { |
---|
1205 | WARNING_2 fprintf(stderr, |
---|
1206 | "Glyph %s has >= two encodings (B), %4.4x & %4.4x\n", |
---|
1207 | glyph_list[n].name, |
---|
1208 | glyph_list[n].char_no, |
---|
1209 | j); |
---|
1210 | } else { |
---|
1211 | if (j < ENCTABSZ) { |
---|
1212 | if(encoding[j] == -1) { |
---|
1213 | glyph_list[n].char_no = j; |
---|
1214 | encoding[j] = n; |
---|
1215 | } |
---|
1216 | } |
---|
1217 | } |
---|
1218 | } |
---|
1219 | } |
---|
1220 | |
---|
1221 | /* |
---|
1222 | * Get the original encoding of the font. |
---|
1223 | * Returns 1 for if the original encoding is Unicode, 2 if the |
---|
1224 | * original encoding is other 16-bit, 0 if 8-bit. |
---|
1225 | */ |
---|
1226 | |
---|
1227 | static int |
---|
1228 | glenc( |
---|
1229 | GLYPH *glyph_list, |
---|
1230 | int *encoding, |
---|
1231 | int *unimap |
---|
1232 | ) |
---|
1233 | { |
---|
1234 | int num_tables = ntohs(cmap_table->numberOfEncodingTables); |
---|
1235 | BYTE *ptr; |
---|
1236 | int i, format, offset, seg_c2, found; |
---|
1237 | int platform, encoding_id; |
---|
1238 | TTF_CMAP_ENTRY *table_entry; |
---|
1239 | TTF_CMAP_FMT4 *encoding4; |
---|
1240 | |
---|
1241 | if(enc_found_ms) { |
---|
1242 | handle_ms_encoding(glyph_list, encoding, unimap); |
---|
1243 | return enc_type; |
---|
1244 | } else if(enc_found_mac) { |
---|
1245 | handle_mac_encoding(glyph_list, encoding, unimap); |
---|
1246 | return 0; |
---|
1247 | } |
---|
1248 | |
---|
1249 | enc_type = 0; |
---|
1250 | found = 0; |
---|
1251 | |
---|
1252 | for (i = 0; i < num_tables && !found; i++) { |
---|
1253 | table_entry = &(cmap_table->encodingTable[i]); |
---|
1254 | offset = ntohl(table_entry->offset); |
---|
1255 | encoding4 = (TTF_CMAP_FMT4 *) ((BYTE *) cmap_table + offset); |
---|
1256 | format = ntohs(encoding4->format); |
---|
1257 | platform = ntohs(table_entry->platformID); |
---|
1258 | encoding_id = ntohs(table_entry->encodingID); |
---|
1259 | |
---|
1260 | if (format != 4) |
---|
1261 | continue; |
---|
1262 | |
---|
1263 | if(force_pid != -1) { |
---|
1264 | if(force_pid != platform || encoding_id != force_eid) |
---|
1265 | continue; |
---|
1266 | WARNING_1 fprintf(stderr, "Found Encoding PID=%d/EID=%d\n", |
---|
1267 | force_pid, force_eid); |
---|
1268 | enc_type = 1; |
---|
1269 | } else { |
---|
1270 | if (platform == 3 ) { |
---|
1271 | switch (encoding_id) { |
---|
1272 | case 0: |
---|
1273 | WARNING_1 fputs("Found Symbol Encoding\n", stderr); |
---|
1274 | break; |
---|
1275 | case 1: |
---|
1276 | WARNING_1 fputs("Found Unicode Encoding\n", stderr); |
---|
1277 | enc_type = 1; |
---|
1278 | break; |
---|
1279 | default: |
---|
1280 | WARNING_1 { |
---|
1281 | fprintf(stderr, |
---|
1282 | "****MS Encoding ID %d not supported****\n", |
---|
1283 | encoding_id); |
---|
1284 | fputs("Treating it like Symbol encoding\n", stderr); |
---|
1285 | } |
---|
1286 | break; |
---|
1287 | } |
---|
1288 | } else |
---|
1289 | continue; |
---|
1290 | } |
---|
1291 | |
---|
1292 | found = 1; |
---|
1293 | seg_c2 = ntohs(encoding4->segCountX2); |
---|
1294 | cmap_n_segs = seg_c2 >> 1; |
---|
1295 | ptr = (BYTE *) encoding4 + 14; |
---|
1296 | cmap_seg_end = (USHORT *) ptr; |
---|
1297 | cmap_seg_start = (USHORT *) (ptr + seg_c2 + 2); |
---|
1298 | cmap_idDelta = (short *) (ptr + (seg_c2 * 2) + 2); |
---|
1299 | cmap_idRangeOffset = (short *) (ptr + (seg_c2 * 3) + 2); |
---|
1300 | enc_found_ms = 1; |
---|
1301 | |
---|
1302 | handle_ms_encoding(glyph_list, encoding, unimap); |
---|
1303 | } |
---|
1304 | |
---|
1305 | if (!found && force_pid == -1) { |
---|
1306 | WARNING_1 fputs("No Microsoft encoding, looking for MAC encoding\n", stderr); |
---|
1307 | for (i = 0; i < num_tables && !found; i++) { |
---|
1308 | table_entry = &(cmap_table->encodingTable[i]); |
---|
1309 | offset = ntohl(table_entry->offset); |
---|
1310 | encoding0 = (TTF_CMAP_FMT0 *) ((BYTE *) cmap_table + offset); |
---|
1311 | format = ntohs(encoding0->format); |
---|
1312 | platform = ntohs(table_entry->platformID); |
---|
1313 | encoding_id = ntohs(table_entry->encodingID); |
---|
1314 | |
---|
1315 | if (format == 0) { |
---|
1316 | found = 1; |
---|
1317 | enc_found_mac = 1; |
---|
1318 | |
---|
1319 | handle_mac_encoding(glyph_list, encoding, unimap); |
---|
1320 | } |
---|
1321 | } |
---|
1322 | } |
---|
1323 | |
---|
1324 | if (!found && force_pid == -1) { |
---|
1325 | WARNING_1 fputs("No MAC encoding either, looking for any format 4 encoding\n", stderr); |
---|
1326 | for (i = 0; i < num_tables && !found; i++) { |
---|
1327 | table_entry = &(cmap_table->encodingTable[i]); |
---|
1328 | offset = ntohl(table_entry->offset); |
---|
1329 | encoding4 = (TTF_CMAP_FMT4 *) ((BYTE *) cmap_table + offset); |
---|
1330 | format = ntohs(encoding4->format); |
---|
1331 | platform = ntohs(table_entry->platformID); |
---|
1332 | encoding_id = ntohs(table_entry->encodingID); |
---|
1333 | |
---|
1334 | if (format != 4) |
---|
1335 | continue; |
---|
1336 | |
---|
1337 | WARNING_1 fprintf(stderr, "Found a last ditch encoding PID=%d/EID=%d, treating it as Unicode.\n", |
---|
1338 | platform, encoding_id); |
---|
1339 | found = 1; |
---|
1340 | enc_type = 1; |
---|
1341 | seg_c2 = ntohs(encoding4->segCountX2); |
---|
1342 | cmap_n_segs = seg_c2 >> 1; |
---|
1343 | ptr = (BYTE *) encoding4 + 14; |
---|
1344 | cmap_seg_end = (USHORT *) ptr; |
---|
1345 | cmap_seg_start = (USHORT *) (ptr + seg_c2 + 2); |
---|
1346 | cmap_idDelta = (short *) (ptr + (seg_c2 * 2) + 2); |
---|
1347 | cmap_idRangeOffset = (short *) (ptr + (seg_c2 * 3) + 2); |
---|
1348 | enc_found_ms = 1; |
---|
1349 | |
---|
1350 | handle_ms_encoding(glyph_list, encoding, unimap); |
---|
1351 | |
---|
1352 | } |
---|
1353 | } |
---|
1354 | |
---|
1355 | if (!found) { |
---|
1356 | if(force_pid != -1) { |
---|
1357 | fprintf(stderr, "*** TTF encoding table PID=%d/EID=%d not found\n", |
---|
1358 | force_pid, force_eid); |
---|
1359 | } |
---|
1360 | fprintf(stderr, "**** No Recognised Encoding Table ****\n"); |
---|
1361 | if(warnlevel >= 2) { |
---|
1362 | fprintf(stderr, "Font contains the following unsupported encoding tables:\n"); |
---|
1363 | for (i = 0; i < num_tables && !found; i++) { |
---|
1364 | table_entry = &(cmap_table->encodingTable[i]); |
---|
1365 | offset = ntohl(table_entry->offset); |
---|
1366 | encoding0 = (TTF_CMAP_FMT0 *) ((BYTE *) cmap_table + offset); |
---|
1367 | format = ntohs(encoding0->format); |
---|
1368 | platform = ntohs(table_entry->platformID); |
---|
1369 | encoding_id = ntohs(table_entry->encodingID); |
---|
1370 | |
---|
1371 | fprintf(stderr, " format=%d platform=%d encoding_id=%d\n", |
---|
1372 | format, platform, encoding_id); |
---|
1373 | } |
---|
1374 | } |
---|
1375 | exit(1); |
---|
1376 | } |
---|
1377 | |
---|
1378 | return enc_type; |
---|
1379 | } |
---|
1380 | |
---|
1381 | /* |
---|
1382 | * Get the font metrics |
---|
1383 | */ |
---|
1384 | static void |
---|
1385 | fnmetrics( |
---|
1386 | struct font_metrics *fm |
---|
1387 | ) |
---|
1388 | { |
---|
1389 | char *str; |
---|
1390 | static int fieldstocheck[]= {2,4,6}; |
---|
1391 | int i, j, len; |
---|
1392 | |
---|
1393 | fm->italic_angle = (short) (ntohs(post_table->italicAngle.upper)) + |
---|
1394 | ((short) ntohs(post_table->italicAngle.lower) / 65536.0); |
---|
1395 | fm->underline_position = (short) ntohs(post_table->underlinePosition); |
---|
1396 | fm->underline_thickness = (short) ntohs(post_table->underlineThickness); |
---|
1397 | fm->is_fixed_pitch = ntohl(post_table->isFixedPitch); |
---|
1398 | |
---|
1399 | fm->ascender = (short)ntohs(hhea_table->ascender); |
---|
1400 | fm->descender = (short)ntohs(hhea_table->descender); |
---|
1401 | |
---|
1402 | fm->units_per_em = ntohs(head_table->unitsPerEm); |
---|
1403 | |
---|
1404 | fm->bbox[0] = (short) ntohs(head_table->xMin); |
---|
1405 | fm->bbox[1] = (short) ntohs(head_table->yMin); |
---|
1406 | fm->bbox[2] = (short) ntohs(head_table->xMax); |
---|
1407 | fm->bbox[3] = (short) ntohs(head_table->yMax); |
---|
1408 | |
---|
1409 | fm->name_copyright = name_fields[0]; |
---|
1410 | fm->name_family = name_fields[1]; |
---|
1411 | fm->name_style = name_fields[2]; |
---|
1412 | fm->name_full = name_fields[4]; |
---|
1413 | fm->name_version = name_fields[5]; |
---|
1414 | fm->name_ps = name_fields[6]; |
---|
1415 | |
---|
1416 | /* guess the boldness from the font names */ |
---|
1417 | fm->force_bold=0; |
---|
1418 | |
---|
1419 | for(i=0; !fm->force_bold && i<sizeof fieldstocheck /sizeof(int); i++) { |
---|
1420 | str = name_fields[fieldstocheck[i]]; |
---|
1421 | len = strlen(str); |
---|
1422 | for(j=0; j<len; j++) { |
---|
1423 | if( (str[j]=='B' |
---|
1424 | || str[j]=='b' |
---|
1425 | && ( j==0 || !isalpha(str[j-1]) ) |
---|
1426 | ) |
---|
1427 | && !strncmp("old",&str[j+1],3) |
---|
1428 | && (j+4 >= len || !islower(str[j+4])) |
---|
1429 | ) { |
---|
1430 | fm->force_bold=1; |
---|
1431 | break; |
---|
1432 | } |
---|
1433 | } |
---|
1434 | } |
---|
1435 | } |
---|
1436 | |
---|
1437 | /* |
---|
1438 | * Get the path of contrours for a glyph. |
---|
1439 | */ |
---|
1440 | |
---|
1441 | static void |
---|
1442 | glpath( |
---|
1443 | int glyphno, |
---|
1444 | GLYPH *glyf_list |
---|
1445 | ) |
---|
1446 | { |
---|
1447 | double matrix[6]; |
---|
1448 | GLYPH *g; |
---|
1449 | |
---|
1450 | g = &glyph_list[glyphno]; |
---|
1451 | |
---|
1452 | matrix[0] = matrix[3] = 1.0; |
---|
1453 | matrix[1] = matrix[2] = matrix[4] = matrix[5] = 0.0; |
---|
1454 | draw_composite_glyf(g, glyf_list, glyphno, matrix, 0 /*level*/); |
---|
1455 | } |
---|
1456 | |
---|
1457 | /* |
---|
1458 | * Get the kerning data. |
---|
1459 | */ |
---|
1460 | |
---|
1461 | static void |
---|
1462 | kerning( |
---|
1463 | GLYPH *glyph_list |
---|
1464 | ) |
---|
1465 | { |
---|
1466 | TTF_KERN_SUB *subtable; |
---|
1467 | TTF_KERN_ENTRY *kern_entry; |
---|
1468 | int i, j; |
---|
1469 | int ntables; |
---|
1470 | int npairs; |
---|
1471 | char *ptr; |
---|
1472 | |
---|
1473 | if(kern_table == NULL) { |
---|
1474 | WARNING_1 fputs("No Kerning data\n", stderr); |
---|
1475 | return; |
---|
1476 | } |
---|
1477 | if(badpointer(kern_table)) { |
---|
1478 | fputs("**** Defective Kerning table, ignored\n", stderr); |
---|
1479 | return; |
---|
1480 | } |
---|
1481 | |
---|
1482 | ntables = ntohs(kern_table->nTables); |
---|
1483 | ptr = (char *) kern_table + 4; |
---|
1484 | |
---|
1485 | for (i = 0; i < ntables; i++) { |
---|
1486 | subtable = (TTF_KERN_SUB *) ptr; |
---|
1487 | if ((ntohs(subtable->coverage) & 0xff00) == 0) { |
---|
1488 | npairs = (short) ntohs(subtable->nPairs); |
---|
1489 | kern_entry = (TTF_KERN_ENTRY *) (ptr + sizeof(TTF_KERN_SUB)); |
---|
1490 | |
---|
1491 | kern_entry = (TTF_KERN_ENTRY *) (ptr + sizeof(TTF_KERN_SUB)); |
---|
1492 | for (j = 0; j < npairs; j++) { |
---|
1493 | if( kern_entry->value != 0) |
---|
1494 | addkernpair(ntohs(kern_entry->left), |
---|
1495 | ntohs(kern_entry->right), (short)ntohs(kern_entry->value)); |
---|
1496 | kern_entry++; |
---|
1497 | } |
---|
1498 | } |
---|
1499 | ptr += subtable->length; |
---|
1500 | } |
---|
1501 | } |
---|
1502 | |
---|