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5172
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/***************************************************************************/
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/* */
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/* sfobjs.c */
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/* */
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/* SFNT object management (base). */
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/* */
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/* Copyright 1996-2008, 2010-2011 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include <ft2build.h>
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#include "sfobjs.h"
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#include "ttload.h"
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#include "ttcmap.h"
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#include "ttkern.h"
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#include FT_INTERNAL_SFNT_H
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#include FT_INTERNAL_DEBUG_H
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#include FT_TRUETYPE_IDS_H
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#include FT_TRUETYPE_TAGS_H
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#include FT_SERVICE_POSTSCRIPT_CMAPS_H
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#include FT_SFNT_NAMES_H
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#include "sferrors.h"
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#ifdef TT_CONFIG_OPTION_BDF
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#include "ttbdf.h"
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#endif
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/*************************************************************************/
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/* */
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39 |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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40 |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_sfobjs
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45 |
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46 |
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47 |
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48 |
/* convert a UTF-16 name entry to ASCII */
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49 |
static FT_String*
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tt_name_entry_ascii_from_utf16( TT_NameEntry entry,
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FT_Memory memory )
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{
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53 |
FT_String* string = NULL;
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54 |
FT_UInt len, code, n;
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FT_Byte* read = (FT_Byte*)entry->string;
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FT_Error error;
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57 |
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58 |
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len = (FT_UInt)entry->stringLength / 2;
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60 |
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if ( FT_NEW_ARRAY( string, len + 1 ) )
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return NULL;
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for ( n = 0; n < len; n++ )
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{
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code = FT_NEXT_USHORT( read );
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if ( code < 32 || code > 127 )
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code = '?';
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69 |
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string[n] = (char)code;
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}
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72 |
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string[len] = 0;
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74 |
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return string;
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}
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/* convert an Apple Roman or symbol name entry to ASCII */
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80 |
static FT_String*
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tt_name_entry_ascii_from_other( TT_NameEntry entry,
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FT_Memory memory )
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{
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FT_String* string = NULL;
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FT_UInt len, code, n;
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FT_Byte* read = (FT_Byte*)entry->string;
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FT_Error error;
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88 |
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89 |
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len = (FT_UInt)entry->stringLength;
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91 |
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92 |
if ( FT_NEW_ARRAY( string, len + 1 ) )
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return NULL;
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for ( n = 0; n < len; n++ )
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{
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code = *read++;
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if ( code < 32 || code > 127 )
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code = '?';
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100 |
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string[n] = (char)code;
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}
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103 |
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string[len] = 0;
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105 |
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return string;
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}
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108 |
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109 |
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110 |
typedef FT_String* (*TT_NameEntry_ConvertFunc)( TT_NameEntry entry,
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FT_Memory memory );
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112 |
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113 |
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/*************************************************************************/
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115 |
/* */
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116 |
/* <Function> */
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117 |
/* tt_face_get_name */
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118 |
/* */
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119 |
/* <Description> */
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/* Returns a given ENGLISH name record in ASCII. */
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/* */
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/* <Input> */
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/* face :: A handle to the source face object. */
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/* */
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/* nameid :: The name id of the name record to return. */
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126 |
/* */
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127 |
/* <InOut> */
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128 |
/* name :: The address of a string pointer. NULL if no name is */
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/* present. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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133 |
/* */
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134 |
static FT_Error
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tt_face_get_name( TT_Face face,
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FT_UShort nameid,
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FT_String** name )
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{
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139 |
FT_Memory memory = face->root.memory;
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140 |
FT_Error error = SFNT_Err_Ok;
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FT_String* result = NULL;
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142 |
FT_UShort n;
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143 |
TT_NameEntryRec* rec;
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144 |
FT_Int found_apple = -1;
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145 |
FT_Int found_apple_roman = -1;
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146 |
FT_Int found_apple_english = -1;
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147 |
FT_Int found_win = -1;
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148 |
FT_Int found_unicode = -1;
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149 |
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150 |
FT_Bool is_english = 0;
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151 |
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152 |
TT_NameEntry_ConvertFunc convert;
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153 |
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154 |
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155 |
FT_ASSERT( name );
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156 |
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157 |
rec = face->name_table.names;
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for ( n = 0; n < face->num_names; n++, rec++ )
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{
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160 |
/* According to the OpenType 1.3 specification, only Microsoft or */
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161 |
/* Apple platform IDs might be used in the `name' table. The */
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162 |
/* `Unicode' platform is reserved for the `cmap' table, and the */
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/* `ISO' one is deprecated. */
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164 |
/* */
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/* However, the Apple TrueType specification doesn't say the same */
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166 |
/* thing and goes to suggest that all Unicode `name' table entries */
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/* should be coded in UTF-16 (in big-endian format I suppose). */
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168 |
/* */
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169 |
if ( rec->nameID == nameid && rec->stringLength > 0 )
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{
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171 |
switch ( rec->platformID )
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{
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case TT_PLATFORM_APPLE_UNICODE:
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case TT_PLATFORM_ISO:
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/* there is `languageID' to check there. We should use this */
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/* field only as a last solution when nothing else is */
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/* available. */
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/* */
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179 |
found_unicode = n;
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180 |
break;
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181 |
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182 |
case TT_PLATFORM_MACINTOSH:
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183 |
/* This is a bit special because some fonts will use either */
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184 |
/* an English language id, or a Roman encoding id, to indicate */
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185 |
/* the English version of its font name. */
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186 |
/* */
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187 |
if ( rec->languageID == TT_MAC_LANGID_ENGLISH )
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188 |
found_apple_english = n;
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else if ( rec->encodingID == TT_MAC_ID_ROMAN )
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190 |
found_apple_roman = n;
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191 |
break;
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192 |
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193 |
case TT_PLATFORM_MICROSOFT:
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/* we only take a non-English name when there is nothing */
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195 |
/* else available in the font */
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196 |
/* */
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197 |
if ( found_win == -1 || ( rec->languageID & 0x3FF ) == 0x009 )
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198 |
{
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199 |
switch ( rec->encodingID )
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200 |
{
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201 |
case TT_MS_ID_SYMBOL_CS:
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202 |
case TT_MS_ID_UNICODE_CS:
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203 |
case TT_MS_ID_UCS_4:
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204 |
is_english = FT_BOOL( ( rec->languageID & 0x3FF ) == 0x009 );
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205 |
found_win = n;
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206 |
break;
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207 |
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208 |
default:
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209 |
;
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210 |
}
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211 |
}
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212 |
break;
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213 |
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214 |
default:
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215 |
;
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216 |
}
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217 |
}
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218 |
}
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219 |
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220 |
found_apple = found_apple_roman;
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221 |
if ( found_apple_english >= 0 )
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222 |
found_apple = found_apple_english;
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223 |
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224 |
/* some fonts contain invalid Unicode or Macintosh formatted entries; */
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225 |
/* we will thus favor names encoded in Windows formats if available */
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226 |
/* (provided it is an English name) */
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227 |
/* */
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228 |
convert = NULL;
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229 |
if ( found_win >= 0 && !( found_apple >= 0 && !is_english ) )
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230 |
{
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231 |
rec = face->name_table.names + found_win;
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232 |
switch ( rec->encodingID )
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233 |
{
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234 |
/* all Unicode strings are encoded using UTF-16BE */
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235 |
case TT_MS_ID_UNICODE_CS:
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236 |
case TT_MS_ID_SYMBOL_CS:
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237 |
convert = tt_name_entry_ascii_from_utf16;
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238 |
break;
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239 |
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240 |
case TT_MS_ID_UCS_4:
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241 |
/* Apparently, if this value is found in a name table entry, it is */
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242 |
/* documented as `full Unicode repertoire'. Experience with the */
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243 |
/* MsGothic font shipped with Windows Vista shows that this really */
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244 |
/* means UTF-16 encoded names (UCS-4 values are only used within */
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245 |
/* charmaps). */
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246 |
convert = tt_name_entry_ascii_from_utf16;
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247 |
break;
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248 |
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249 |
default:
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250 |
;
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251 |
}
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252 |
}
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253 |
else if ( found_apple >= 0 )
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254 |
{
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255 |
rec = face->name_table.names + found_apple;
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256 |
convert = tt_name_entry_ascii_from_other;
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257 |
}
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258 |
else if ( found_unicode >= 0 )
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259 |
{
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260 |
rec = face->name_table.names + found_unicode;
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261 |
convert = tt_name_entry_ascii_from_utf16;
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262 |
}
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263 |
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264 |
if ( rec && convert )
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265 |
{
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266 |
if ( rec->string == NULL )
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267 |
{
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268 |
FT_Stream stream = face->name_table.stream;
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269 |
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270 |
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271 |
if ( FT_QNEW_ARRAY ( rec->string, rec->stringLength ) ||
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272 |
FT_STREAM_SEEK( rec->stringOffset ) ||
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273 |
FT_STREAM_READ( rec->string, rec->stringLength ) )
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274 |
{
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275 |
FT_FREE( rec->string );
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276 |
rec->stringLength = 0;
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277 |
result = NULL;
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278 |
goto Exit;
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279 |
}
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280 |
}
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281 |
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282 |
result = convert( rec, memory );
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283 |
}
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284 |
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285 |
Exit:
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286 |
*name = result;
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287 |
return error;
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288 |
}
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289 |
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290 |
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291 |
static FT_Encoding
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292 |
sfnt_find_encoding( int platform_id,
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293 |
int encoding_id )
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294 |
{
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295 |
typedef struct TEncoding_
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296 |
{
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297 |
int platform_id;
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298 |
int encoding_id;
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299 |
FT_Encoding encoding;
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300 |
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301 |
} TEncoding;
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302 |
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303 |
static
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304 |
const TEncoding tt_encodings[] =
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305 |
{
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306 |
{ TT_PLATFORM_ISO, -1, FT_ENCODING_UNICODE },
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307 |
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308 |
{ TT_PLATFORM_APPLE_UNICODE, -1, FT_ENCODING_UNICODE },
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309 |
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310 |
{ TT_PLATFORM_MACINTOSH, TT_MAC_ID_ROMAN, FT_ENCODING_APPLE_ROMAN },
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311 |
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312 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_SYMBOL_CS, FT_ENCODING_MS_SYMBOL },
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313 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_UCS_4, FT_ENCODING_UNICODE },
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314 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_UNICODE_CS, FT_ENCODING_UNICODE },
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315 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_SJIS, FT_ENCODING_SJIS },
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316 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_GB2312, FT_ENCODING_GB2312 },
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317 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_BIG_5, FT_ENCODING_BIG5 },
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318 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_WANSUNG, FT_ENCODING_WANSUNG },
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|
319 |
{ TT_PLATFORM_MICROSOFT, TT_MS_ID_JOHAB, FT_ENCODING_JOHAB }
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|
320 |
};
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|
321 |
|
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|
322 |
const TEncoding *cur, *limit;
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|
323 |
|
|
|
324 |
|
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|
325 |
cur = tt_encodings;
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|
326 |
limit = cur + sizeof ( tt_encodings ) / sizeof ( tt_encodings[0] );
|
|
|
327 |
|
|
|
328 |
for ( ; cur < limit; cur++ )
|
|
|
329 |
{
|
|
|
330 |
if ( cur->platform_id == platform_id )
|
|
|
331 |
{
|
|
|
332 |
if ( cur->encoding_id == encoding_id ||
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|
333 |
cur->encoding_id == -1 )
|
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|
334 |
return cur->encoding;
|
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|
335 |
}
|
|
|
336 |
}
|
|
|
337 |
|
|
|
338 |
return FT_ENCODING_NONE;
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|
|
339 |
}
|
|
|
340 |
|
|
|
341 |
|
|
|
342 |
/* Fill in face->ttc_header. If the font is not a TTC, it is */
|
|
|
343 |
/* synthesized into a TTC with one offset table. */
|
|
|
344 |
static FT_Error
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|
345 |
sfnt_open_font( FT_Stream stream,
|
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|
346 |
TT_Face face )
|
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|
347 |
{
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|
348 |
FT_Memory memory = stream->memory;
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|
349 |
FT_Error error;
|
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|
350 |
FT_ULong tag, offset;
|
|
|
351 |
|
|
|
352 |
static const FT_Frame_Field ttc_header_fields[] =
|
|
|
353 |
{
|
|
|
354 |
#undef FT_STRUCTURE
|
|
|
355 |
#define FT_STRUCTURE TTC_HeaderRec
|
|
|
356 |
|
|
|
357 |
FT_FRAME_START( 8 ),
|
|
|
358 |
FT_FRAME_LONG( version ),
|
|
|
359 |
FT_FRAME_LONG( count ), /* this is ULong in the specs */
|
|
|
360 |
FT_FRAME_END
|
|
|
361 |
};
|
|
|
362 |
|
|
|
363 |
|
|
|
364 |
face->ttc_header.tag = 0;
|
|
|
365 |
face->ttc_header.version = 0;
|
|
|
366 |
face->ttc_header.count = 0;
|
|
|
367 |
|
|
|
368 |
offset = FT_STREAM_POS();
|
|
|
369 |
|
|
|
370 |
if ( FT_READ_ULONG( tag ) )
|
|
|
371 |
return error;
|
|
|
372 |
|
|
|
373 |
if ( tag != 0x00010000UL &&
|
|
|
374 |
tag != TTAG_ttcf &&
|
|
|
375 |
tag != TTAG_OTTO &&
|
|
|
376 |
tag != TTAG_true &&
|
|
|
377 |
tag != TTAG_typ1 &&
|
|
|
378 |
tag != 0x00020000UL )
|
|
|
379 |
return SFNT_Err_Unknown_File_Format;
|
|
|
380 |
|
|
|
381 |
face->ttc_header.tag = TTAG_ttcf;
|
|
|
382 |
|
|
|
383 |
if ( tag == TTAG_ttcf )
|
|
|
384 |
{
|
|
|
385 |
FT_Int n;
|
|
|
386 |
|
|
|
387 |
|
|
|
388 |
FT_TRACE3(( "sfnt_open_font: file is a collection\n" ));
|
|
|
389 |
|
|
|
390 |
if ( FT_STREAM_READ_FIELDS( ttc_header_fields, &face->ttc_header ) )
|
|
|
391 |
return error;
|
|
|
392 |
|
|
|
393 |
if ( face->ttc_header.count == 0 )
|
|
|
394 |
return SFNT_Err_Invalid_Table;
|
|
|
395 |
|
|
|
396 |
/* a rough size estimate: let's conservatively assume that there */
|
|
|
397 |
/* is just a single table info in each subfont header (12 + 16*1 = */
|
|
|
398 |
/* 28 bytes), thus we have (at least) `12 + 4*count' bytes for the */
|
|
|
399 |
/* size of the TTC header plus `28*count' bytes for all subfont */
|
|
|
400 |
/* headers */
|
|
|
401 |
if ( (FT_ULong)face->ttc_header.count > stream->size / ( 28 + 4 ) )
|
|
|
402 |
return SFNT_Err_Array_Too_Large;
|
|
|
403 |
|
|
|
404 |
/* now read the offsets of each font in the file */
|
|
|
405 |
if ( FT_NEW_ARRAY( face->ttc_header.offsets, face->ttc_header.count ) )
|
|
|
406 |
return error;
|
|
|
407 |
|
|
|
408 |
if ( FT_FRAME_ENTER( face->ttc_header.count * 4L ) )
|
|
|
409 |
return error;
|
|
|
410 |
|
|
|
411 |
for ( n = 0; n < face->ttc_header.count; n++ )
|
|
|
412 |
face->ttc_header.offsets[n] = FT_GET_ULONG();
|
|
|
413 |
|
|
|
414 |
FT_FRAME_EXIT();
|
|
|
415 |
}
|
|
|
416 |
else
|
|
|
417 |
{
|
|
|
418 |
FT_TRACE3(( "sfnt_open_font: synthesize TTC\n" ));
|
|
|
419 |
|
|
|
420 |
face->ttc_header.version = 1 << 16;
|
|
|
421 |
face->ttc_header.count = 1;
|
|
|
422 |
|
|
|
423 |
if ( FT_NEW( face->ttc_header.offsets ) )
|
|
|
424 |
return error;
|
|
|
425 |
|
|
|
426 |
face->ttc_header.offsets[0] = offset;
|
|
|
427 |
}
|
|
|
428 |
|
|
|
429 |
return error;
|
|
|
430 |
}
|
|
|
431 |
|
|
|
432 |
|
|
|
433 |
FT_LOCAL_DEF( FT_Error )
|
|
|
434 |
sfnt_init_face( FT_Stream stream,
|
|
|
435 |
TT_Face face,
|
|
|
436 |
FT_Int face_index,
|
|
|
437 |
FT_Int num_params,
|
|
|
438 |
FT_Parameter* params )
|
|
|
439 |
{
|
|
|
440 |
FT_Error error;
|
|
|
441 |
FT_Library library = face->root.driver->root.library;
|
|
|
442 |
SFNT_Service sfnt;
|
|
|
443 |
|
|
|
444 |
|
|
|
445 |
/* for now, parameters are unused */
|
|
|
446 |
FT_UNUSED( num_params );
|
|
|
447 |
FT_UNUSED( params );
|
|
|
448 |
|
|
|
449 |
|
|
|
450 |
sfnt = (SFNT_Service)face->sfnt;
|
|
|
451 |
if ( !sfnt )
|
|
|
452 |
{
|
|
|
453 |
sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
|
|
|
454 |
if ( !sfnt )
|
|
|
455 |
return SFNT_Err_Invalid_File_Format;
|
|
|
456 |
|
|
|
457 |
face->sfnt = sfnt;
|
|
|
458 |
face->goto_table = sfnt->goto_table;
|
|
|
459 |
}
|
|
|
460 |
|
|
|
461 |
FT_FACE_FIND_GLOBAL_SERVICE( face, face->psnames, POSTSCRIPT_CMAPS );
|
|
|
462 |
|
|
|
463 |
error = sfnt_open_font( stream, face );
|
|
|
464 |
if ( error )
|
|
|
465 |
return error;
|
|
|
466 |
|
|
|
467 |
FT_TRACE2(( "sfnt_init_face: %08p, %ld\n", face, face_index ));
|
|
|
468 |
|
|
|
469 |
if ( face_index < 0 )
|
|
|
470 |
face_index = 0;
|
|
|
471 |
|
|
|
472 |
if ( face_index >= face->ttc_header.count )
|
|
|
473 |
return SFNT_Err_Invalid_Argument;
|
|
|
474 |
|
|
|
475 |
if ( FT_STREAM_SEEK( face->ttc_header.offsets[face_index] ) )
|
|
|
476 |
return error;
|
|
|
477 |
|
|
|
478 |
/* check that we have a valid TrueType file */
|
|
|
479 |
error = sfnt->load_font_dir( face, stream );
|
|
|
480 |
if ( error )
|
|
|
481 |
return error;
|
|
|
482 |
|
|
|
483 |
face->root.num_faces = face->ttc_header.count;
|
|
|
484 |
face->root.face_index = face_index;
|
|
|
485 |
|
|
|
486 |
return error;
|
|
|
487 |
}
|
|
|
488 |
|
|
|
489 |
|
|
|
490 |
#define LOAD_( x ) \
|
|
|
491 |
do { \
|
|
|
492 |
FT_TRACE2(( "`" #x "' " )); \
|
|
|
493 |
FT_TRACE3(( "-->\n" )); \
|
|
|
494 |
\
|
|
|
495 |
error = sfnt->load_##x( face, stream ); \
|
|
|
496 |
\
|
|
|
497 |
FT_TRACE2(( "%s\n", ( !error ) \
|
|
|
498 |
? "loaded" \
|
|
|
499 |
: ( error == SFNT_Err_Table_Missing ) \
|
|
|
500 |
? "missing" \
|
|
|
501 |
: "failed to load" )); \
|
|
|
502 |
FT_TRACE3(( "\n" )); \
|
|
|
503 |
} while ( 0 )
|
|
|
504 |
|
|
|
505 |
#define LOADM_( x, vertical ) \
|
|
|
506 |
do { \
|
|
|
507 |
FT_TRACE2(( "`%s" #x "' ", \
|
|
|
508 |
vertical ? "vertical " : "" )); \
|
|
|
509 |
FT_TRACE3(( "-->\n" )); \
|
|
|
510 |
\
|
|
|
511 |
error = sfnt->load_##x( face, stream, vertical ); \
|
|
|
512 |
\
|
|
|
513 |
FT_TRACE2(( "%s\n", ( !error ) \
|
|
|
514 |
? "loaded" \
|
|
|
515 |
: ( error == SFNT_Err_Table_Missing ) \
|
|
|
516 |
? "missing" \
|
|
|
517 |
: "failed to load" )); \
|
|
|
518 |
FT_TRACE3(( "\n" )); \
|
|
|
519 |
} while ( 0 )
|
|
|
520 |
|
|
|
521 |
#define GET_NAME( id, field ) \
|
|
|
522 |
do { \
|
|
|
523 |
error = tt_face_get_name( face, TT_NAME_ID_##id, field ); \
|
|
|
524 |
if ( error ) \
|
|
|
525 |
goto Exit; \
|
|
|
526 |
} while ( 0 )
|
|
|
527 |
|
|
|
528 |
|
|
|
529 |
FT_LOCAL_DEF( FT_Error )
|
|
|
530 |
sfnt_load_face( FT_Stream stream,
|
|
|
531 |
TT_Face face,
|
|
|
532 |
FT_Int face_index,
|
|
|
533 |
FT_Int num_params,
|
|
|
534 |
FT_Parameter* params )
|
|
|
535 |
{
|
|
|
536 |
FT_Error error;
|
|
|
537 |
#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
|
|
|
538 |
FT_Error psnames_error;
|
|
|
539 |
#endif
|
|
|
540 |
FT_Bool has_outline;
|
|
|
541 |
FT_Bool is_apple_sbit;
|
|
|
542 |
FT_Bool ignore_preferred_family = FALSE;
|
|
|
543 |
FT_Bool ignore_preferred_subfamily = FALSE;
|
|
|
544 |
|
|
|
545 |
SFNT_Service sfnt = (SFNT_Service)face->sfnt;
|
|
|
546 |
|
|
|
547 |
FT_UNUSED( face_index );
|
|
|
548 |
|
|
|
549 |
/* Check parameters */
|
|
|
550 |
|
|
|
551 |
{
|
|
|
552 |
FT_Int i;
|
|
|
553 |
|
|
|
554 |
|
|
|
555 |
for ( i = 0; i < num_params; i++ )
|
|
|
556 |
{
|
|
|
557 |
if ( params[i].tag == FT_PARAM_TAG_IGNORE_PREFERRED_FAMILY )
|
|
|
558 |
ignore_preferred_family = TRUE;
|
|
|
559 |
else if ( params[i].tag == FT_PARAM_TAG_IGNORE_PREFERRED_SUBFAMILY )
|
|
|
560 |
ignore_preferred_subfamily = TRUE;
|
|
|
561 |
}
|
|
|
562 |
}
|
|
|
563 |
|
|
|
564 |
/* Load tables */
|
|
|
565 |
|
|
|
566 |
/* We now support two SFNT-based bitmapped font formats. They */
|
|
|
567 |
/* are recognized easily as they do not include a `glyf' */
|
|
|
568 |
/* table. */
|
|
|
569 |
/* */
|
|
|
570 |
/* The first format comes from Apple, and uses a table named */
|
|
|
571 |
/* `bhed' instead of `head' to store the font header (using */
|
|
|
572 |
/* the same format). It also doesn't include horizontal and */
|
|
|
573 |
/* vertical metrics tables (i.e. `hhea' and `vhea' tables are */
|
|
|
574 |
/* missing). */
|
|
|
575 |
/* */
|
|
|
576 |
/* The other format comes from Microsoft, and is used with */
|
|
|
577 |
/* WinCE/PocketPC. It looks like a standard TTF, except that */
|
|
|
578 |
/* it doesn't contain outlines. */
|
|
|
579 |
/* */
|
|
|
580 |
|
|
|
581 |
FT_TRACE2(( "sfnt_load_face: %08p\n\n", face ));
|
|
|
582 |
|
|
|
583 |
/* do we have outlines in there? */
|
|
|
584 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
585 |
has_outline = FT_BOOL( face->root.internal->incremental_interface != 0 ||
|
|
|
586 |
tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
|
|
|
587 |
tt_face_lookup_table( face, TTAG_CFF ) != 0 );
|
|
|
588 |
#else
|
|
|
589 |
has_outline = FT_BOOL( tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
|
|
|
590 |
tt_face_lookup_table( face, TTAG_CFF ) != 0 );
|
|
|
591 |
#endif
|
|
|
592 |
|
|
|
593 |
is_apple_sbit = 0;
|
|
|
594 |
|
|
|
595 |
/* if this font doesn't contain outlines, we try to load */
|
|
|
596 |
/* a `bhed' table */
|
|
|
597 |
if ( !has_outline && sfnt->load_bhed )
|
|
|
598 |
{
|
|
|
599 |
LOAD_( bhed );
|
|
|
600 |
is_apple_sbit = FT_BOOL( !error );
|
|
|
601 |
}
|
|
|
602 |
|
|
|
603 |
/* load the font header (`head' table) if this isn't an Apple */
|
|
|
604 |
/* sbit font file */
|
|
|
605 |
if ( !is_apple_sbit )
|
|
|
606 |
{
|
|
|
607 |
LOAD_( head );
|
|
|
608 |
if ( error )
|
|
|
609 |
goto Exit;
|
|
|
610 |
}
|
|
|
611 |
|
|
|
612 |
if ( face->header.Units_Per_EM == 0 )
|
|
|
613 |
{
|
|
|
614 |
error = SFNT_Err_Invalid_Table;
|
|
|
615 |
|
|
|
616 |
goto Exit;
|
|
|
617 |
}
|
|
|
618 |
|
|
|
619 |
/* the following tables are often not present in embedded TrueType */
|
|
|
620 |
/* fonts within PDF documents, so don't check for them. */
|
|
|
621 |
LOAD_( maxp );
|
|
|
622 |
LOAD_( cmap );
|
|
|
623 |
|
|
|
624 |
/* the following tables are optional in PCL fonts -- */
|
|
|
625 |
/* don't check for errors */
|
|
|
626 |
LOAD_( name );
|
|
|
627 |
LOAD_( post );
|
|
|
628 |
|
|
|
629 |
#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
|
|
|
630 |
psnames_error = error;
|
|
|
631 |
#endif
|
|
|
632 |
|
|
|
633 |
/* do not load the metrics headers and tables if this is an Apple */
|
|
|
634 |
/* sbit font file */
|
|
|
635 |
if ( !is_apple_sbit )
|
|
|
636 |
{
|
|
|
637 |
/* load the `hhea' and `hmtx' tables */
|
|
|
638 |
LOADM_( hhea, 0 );
|
|
|
639 |
if ( !error )
|
|
|
640 |
{
|
|
|
641 |
LOADM_( hmtx, 0 );
|
|
|
642 |
if ( error == SFNT_Err_Table_Missing )
|
|
|
643 |
{
|
|
|
644 |
error = SFNT_Err_Hmtx_Table_Missing;
|
|
|
645 |
|
|
|
646 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
647 |
/* If this is an incrementally loaded font and there are */
|
|
|
648 |
/* overriding metrics, tolerate a missing `hmtx' table. */
|
|
|
649 |
if ( face->root.internal->incremental_interface &&
|
|
|
650 |
face->root.internal->incremental_interface->funcs->
|
|
|
651 |
get_glyph_metrics )
|
|
|
652 |
{
|
|
|
653 |
face->horizontal.number_Of_HMetrics = 0;
|
|
|
654 |
error = SFNT_Err_Ok;
|
|
|
655 |
}
|
|
|
656 |
#endif
|
|
|
657 |
}
|
|
|
658 |
}
|
|
|
659 |
else if ( error == SFNT_Err_Table_Missing )
|
|
|
660 |
{
|
|
|
661 |
/* No `hhea' table necessary for SFNT Mac fonts. */
|
|
|
662 |
if ( face->format_tag == TTAG_true )
|
|
|
663 |
{
|
|
|
664 |
FT_TRACE2(( "This is an SFNT Mac font.\n" ));
|
|
|
665 |
has_outline = 0;
|
|
|
666 |
error = SFNT_Err_Ok;
|
|
|
667 |
}
|
|
|
668 |
else
|
|
|
669 |
{
|
|
|
670 |
error = SFNT_Err_Horiz_Header_Missing;
|
|
|
671 |
|
|
|
672 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
673 |
/* If this is an incrementally loaded font and there are */
|
|
|
674 |
/* overriding metrics, tolerate a missing `hhea' table. */
|
|
|
675 |
if ( face->root.internal->incremental_interface &&
|
|
|
676 |
face->root.internal->incremental_interface->funcs->
|
|
|
677 |
get_glyph_metrics )
|
|
|
678 |
{
|
|
|
679 |
face->horizontal.number_Of_HMetrics = 0;
|
|
|
680 |
error = SFNT_Err_Ok;
|
|
|
681 |
}
|
|
|
682 |
#endif
|
|
|
683 |
|
|
|
684 |
}
|
|
|
685 |
}
|
|
|
686 |
|
|
|
687 |
if ( error )
|
|
|
688 |
goto Exit;
|
|
|
689 |
|
|
|
690 |
/* try to load the `vhea' and `vmtx' tables */
|
|
|
691 |
LOADM_( hhea, 1 );
|
|
|
692 |
if ( !error )
|
|
|
693 |
{
|
|
|
694 |
LOADM_( hmtx, 1 );
|
|
|
695 |
if ( !error )
|
|
|
696 |
face->vertical_info = 1;
|
|
|
697 |
}
|
|
|
698 |
|
|
|
699 |
if ( error && error != SFNT_Err_Table_Missing )
|
|
|
700 |
goto Exit;
|
|
|
701 |
|
|
|
702 |
LOAD_( os2 );
|
|
|
703 |
if ( error )
|
|
|
704 |
{
|
|
|
705 |
/* we treat the table as missing if there are any errors */
|
|
|
706 |
face->os2.version = 0xFFFFU;
|
|
|
707 |
}
|
|
|
708 |
}
|
|
|
709 |
|
|
|
710 |
/* the optional tables */
|
|
|
711 |
|
|
|
712 |
/* embedded bitmap support */
|
|
|
713 |
if ( sfnt->load_eblc )
|
|
|
714 |
{
|
|
|
715 |
LOAD_( eblc );
|
|
|
716 |
if ( error )
|
|
|
717 |
{
|
|
|
718 |
/* a font which contains neither bitmaps nor outlines is */
|
|
|
719 |
/* still valid (although rather useless in most cases); */
|
|
|
720 |
/* however, you can find such stripped fonts in PDFs */
|
|
|
721 |
if ( error == SFNT_Err_Table_Missing )
|
|
|
722 |
error = SFNT_Err_Ok;
|
|
|
723 |
else
|
|
|
724 |
goto Exit;
|
|
|
725 |
}
|
|
|
726 |
}
|
|
|
727 |
|
|
|
728 |
LOAD_( pclt );
|
|
|
729 |
if ( error )
|
|
|
730 |
{
|
|
|
731 |
if ( error != SFNT_Err_Table_Missing )
|
|
|
732 |
goto Exit;
|
|
|
733 |
|
|
|
734 |
face->pclt.Version = 0;
|
|
|
735 |
}
|
|
|
736 |
|
|
|
737 |
/* consider the kerning and gasp tables as optional */
|
|
|
738 |
LOAD_( gasp );
|
|
|
739 |
LOAD_( kern );
|
|
|
740 |
|
|
|
741 |
face->root.num_glyphs = face->max_profile.numGlyphs;
|
|
|
742 |
|
|
|
743 |
/* Bit 8 of the `fsSelection' field in the `OS/2' table denotes */
|
|
|
744 |
/* a WWS-only font face. `WWS' stands for `weight', width', and */
|
|
|
745 |
/* `slope', a term used by Microsoft's Windows Presentation */
|
|
|
746 |
/* Foundation (WPF). This flag has been introduced in version */
|
|
|
747 |
/* 1.5 of the OpenType specification (May 2008). */
|
|
|
748 |
|
|
|
749 |
face->root.family_name = NULL;
|
|
|
750 |
face->root.style_name = NULL;
|
|
|
751 |
if ( face->os2.version != 0xFFFFU && face->os2.fsSelection & 256 )
|
|
|
752 |
{
|
|
|
753 |
if ( !ignore_preferred_family )
|
|
|
754 |
GET_NAME( PREFERRED_FAMILY, &face->root.family_name );
|
|
|
755 |
if ( !face->root.family_name )
|
|
|
756 |
GET_NAME( FONT_FAMILY, &face->root.family_name );
|
|
|
757 |
|
|
|
758 |
if ( !ignore_preferred_subfamily )
|
|
|
759 |
GET_NAME( PREFERRED_SUBFAMILY, &face->root.style_name );
|
|
|
760 |
if ( !face->root.style_name )
|
|
|
761 |
GET_NAME( FONT_SUBFAMILY, &face->root.style_name );
|
|
|
762 |
}
|
|
|
763 |
else
|
|
|
764 |
{
|
|
|
765 |
GET_NAME( WWS_FAMILY, &face->root.family_name );
|
|
|
766 |
if ( !face->root.family_name && !ignore_preferred_family )
|
|
|
767 |
GET_NAME( PREFERRED_FAMILY, &face->root.family_name );
|
|
|
768 |
if ( !face->root.family_name )
|
|
|
769 |
GET_NAME( FONT_FAMILY, &face->root.family_name );
|
|
|
770 |
|
|
|
771 |
GET_NAME( WWS_SUBFAMILY, &face->root.style_name );
|
|
|
772 |
if ( !face->root.style_name && !ignore_preferred_subfamily )
|
|
|
773 |
GET_NAME( PREFERRED_SUBFAMILY, &face->root.style_name );
|
|
|
774 |
if ( !face->root.style_name )
|
|
|
775 |
GET_NAME( FONT_SUBFAMILY, &face->root.style_name );
|
|
|
776 |
}
|
|
|
777 |
|
|
|
778 |
/* now set up root fields */
|
|
|
779 |
{
|
|
|
780 |
FT_Face root = &face->root;
|
|
|
781 |
FT_Long flags = root->face_flags;
|
|
|
782 |
|
|
|
783 |
|
|
|
784 |
/*********************************************************************/
|
|
|
785 |
/* */
|
|
|
786 |
/* Compute face flags. */
|
|
|
787 |
/* */
|
|
|
788 |
if ( has_outline == TRUE )
|
|
|
789 |
flags |= FT_FACE_FLAG_SCALABLE; /* scalable outlines */
|
|
|
790 |
|
|
|
791 |
/* The sfnt driver only supports bitmap fonts natively, thus we */
|
|
|
792 |
/* don't set FT_FACE_FLAG_HINTER. */
|
|
|
793 |
flags |= FT_FACE_FLAG_SFNT | /* SFNT file format */
|
|
|
794 |
FT_FACE_FLAG_HORIZONTAL; /* horizontal data */
|
|
|
795 |
|
|
|
796 |
#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
|
|
|
797 |
if ( psnames_error == SFNT_Err_Ok &&
|
|
|
798 |
face->postscript.FormatType != 0x00030000L )
|
|
|
799 |
flags |= FT_FACE_FLAG_GLYPH_NAMES;
|
|
|
800 |
#endif
|
|
|
801 |
|
|
|
802 |
/* fixed width font? */
|
|
|
803 |
if ( face->postscript.isFixedPitch )
|
|
|
804 |
flags |= FT_FACE_FLAG_FIXED_WIDTH;
|
|
|
805 |
|
|
|
806 |
/* vertical information? */
|
|
|
807 |
if ( face->vertical_info )
|
|
|
808 |
flags |= FT_FACE_FLAG_VERTICAL;
|
|
|
809 |
|
|
|
810 |
/* kerning available ? */
|
|
|
811 |
if ( TT_FACE_HAS_KERNING( face ) )
|
|
|
812 |
flags |= FT_FACE_FLAG_KERNING;
|
|
|
813 |
|
|
|
814 |
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
|
|
|
815 |
/* Don't bother to load the tables unless somebody asks for them. */
|
|
|
816 |
/* No need to do work which will (probably) not be used. */
|
|
|
817 |
if ( tt_face_lookup_table( face, TTAG_glyf ) != 0 &&
|
|
|
818 |
tt_face_lookup_table( face, TTAG_fvar ) != 0 &&
|
|
|
819 |
tt_face_lookup_table( face, TTAG_gvar ) != 0 )
|
|
|
820 |
flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;
|
|
|
821 |
#endif
|
|
|
822 |
|
|
|
823 |
root->face_flags = flags;
|
|
|
824 |
|
|
|
825 |
/*********************************************************************/
|
|
|
826 |
/* */
|
|
|
827 |
/* Compute style flags. */
|
|
|
828 |
/* */
|
|
|
829 |
|
|
|
830 |
flags = 0;
|
|
|
831 |
if ( has_outline == TRUE && face->os2.version != 0xFFFFU )
|
|
|
832 |
{
|
|
|
833 |
/* We have an OS/2 table; use the `fsSelection' field. Bit 9 */
|
|
|
834 |
/* indicates an oblique font face. This flag has been */
|
|
|
835 |
/* introduced in version 1.5 of the OpenType specification. */
|
|
|
836 |
|
|
|
837 |
if ( face->os2.fsSelection & 512 ) /* bit 9 */
|
|
|
838 |
flags |= FT_STYLE_FLAG_ITALIC;
|
|
|
839 |
else if ( face->os2.fsSelection & 1 ) /* bit 0 */
|
|
|
840 |
flags |= FT_STYLE_FLAG_ITALIC;
|
|
|
841 |
|
|
|
842 |
if ( face->os2.fsSelection & 32 ) /* bit 5 */
|
|
|
843 |
flags |= FT_STYLE_FLAG_BOLD;
|
|
|
844 |
}
|
|
|
845 |
else
|
|
|
846 |
{
|
|
|
847 |
/* this is an old Mac font, use the header field */
|
|
|
848 |
|
|
|
849 |
if ( face->header.Mac_Style & 1 )
|
|
|
850 |
flags |= FT_STYLE_FLAG_BOLD;
|
|
|
851 |
|
|
|
852 |
if ( face->header.Mac_Style & 2 )
|
|
|
853 |
flags |= FT_STYLE_FLAG_ITALIC;
|
|
|
854 |
}
|
|
|
855 |
|
|
|
856 |
root->style_flags = flags;
|
|
|
857 |
|
|
|
858 |
/*********************************************************************/
|
|
|
859 |
/* */
|
|
|
860 |
/* Polish the charmaps. */
|
|
|
861 |
/* */
|
|
|
862 |
/* Try to set the charmap encoding according to the platform & */
|
|
|
863 |
/* encoding ID of each charmap. */
|
|
|
864 |
/* */
|
|
|
865 |
|
|
|
866 |
tt_face_build_cmaps( face ); /* ignore errors */
|
|
|
867 |
|
|
|
868 |
|
|
|
869 |
/* set the encoding fields */
|
|
|
870 |
{
|
|
|
871 |
FT_Int m;
|
|
|
872 |
|
|
|
873 |
|
|
|
874 |
for ( m = 0; m < root->num_charmaps; m++ )
|
|
|
875 |
{
|
|
|
876 |
FT_CharMap charmap = root->charmaps[m];
|
|
|
877 |
|
|
|
878 |
|
|
|
879 |
charmap->encoding = sfnt_find_encoding( charmap->platform_id,
|
|
|
880 |
charmap->encoding_id );
|
|
|
881 |
|
|
|
882 |
#if 0
|
|
|
883 |
if ( root->charmap == NULL &&
|
|
|
884 |
charmap->encoding == FT_ENCODING_UNICODE )
|
|
|
885 |
{
|
|
|
886 |
/* set 'root->charmap' to the first Unicode encoding we find */
|
|
|
887 |
root->charmap = charmap;
|
|
|
888 |
}
|
|
|
889 |
#endif
|
|
|
890 |
}
|
|
|
891 |
}
|
|
|
892 |
|
|
|
893 |
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
|
|
|
894 |
|
|
|
895 |
/*
|
|
|
896 |
* Now allocate the root array of FT_Bitmap_Size records and
|
|
|
897 |
* populate them. Unfortunately, it isn't possible to indicate bit
|
|
|
898 |
* depths in the FT_Bitmap_Size record. This is a design error.
|
|
|
899 |
*/
|
|
|
900 |
{
|
|
|
901 |
FT_UInt i, count;
|
|
|
902 |
|
|
|
903 |
|
|
|
904 |
#ifndef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
905 |
count = face->sbit_num_strikes;
|
|
|
906 |
#else
|
|
|
907 |
count = (FT_UInt)face->num_sbit_strikes;
|
|
|
908 |
#endif
|
|
|
909 |
|
|
|
910 |
if ( count > 0 )
|
|
|
911 |
{
|
|
|
912 |
FT_Memory memory = face->root.stream->memory;
|
|
|
913 |
FT_UShort em_size = face->header.Units_Per_EM;
|
|
|
914 |
FT_Short avgwidth = face->os2.xAvgCharWidth;
|
|
|
915 |
FT_Size_Metrics metrics;
|
|
|
916 |
|
|
|
917 |
|
|
|
918 |
if ( em_size == 0 || face->os2.version == 0xFFFFU )
|
|
|
919 |
{
|
|
|
920 |
avgwidth = 0;
|
|
|
921 |
em_size = 1;
|
|
|
922 |
}
|
|
|
923 |
|
|
|
924 |
if ( FT_NEW_ARRAY( root->available_sizes, count ) )
|
|
|
925 |
goto Exit;
|
|
|
926 |
|
|
|
927 |
for ( i = 0; i < count; i++ )
|
|
|
928 |
{
|
|
|
929 |
FT_Bitmap_Size* bsize = root->available_sizes + i;
|
|
|
930 |
|
|
|
931 |
|
|
|
932 |
error = sfnt->load_strike_metrics( face, i, &metrics );
|
|
|
933 |
if ( error )
|
|
|
934 |
goto Exit;
|
|
|
935 |
|
|
|
936 |
bsize->height = (FT_Short)( metrics.height >> 6 );
|
|
|
937 |
bsize->width = (FT_Short)(
|
|
|
938 |
( avgwidth * metrics.x_ppem + em_size / 2 ) / em_size );
|
|
|
939 |
|
|
|
940 |
bsize->x_ppem = metrics.x_ppem << 6;
|
|
|
941 |
bsize->y_ppem = metrics.y_ppem << 6;
|
|
|
942 |
|
|
|
943 |
/* assume 72dpi */
|
|
|
944 |
bsize->size = metrics.y_ppem << 6;
|
|
|
945 |
}
|
|
|
946 |
|
|
|
947 |
root->face_flags |= FT_FACE_FLAG_FIXED_SIZES;
|
|
|
948 |
root->num_fixed_sizes = (FT_Int)count;
|
|
|
949 |
}
|
|
|
950 |
}
|
|
|
951 |
|
|
|
952 |
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
|
|
|
953 |
|
|
|
954 |
/* a font with no bitmaps and no outlines is scalable; */
|
|
|
955 |
/* it has only empty glyphs then */
|
|
|
956 |
if ( !FT_HAS_FIXED_SIZES( root ) && !FT_IS_SCALABLE( root ) )
|
|
|
957 |
root->face_flags |= FT_FACE_FLAG_SCALABLE;
|
|
|
958 |
|
|
|
959 |
|
|
|
960 |
/*********************************************************************/
|
|
|
961 |
/* */
|
|
|
962 |
/* Set up metrics. */
|
|
|
963 |
/* */
|
|
|
964 |
if ( FT_IS_SCALABLE( root ) )
|
|
|
965 |
{
|
|
|
966 |
/* XXX What about if outline header is missing */
|
|
|
967 |
/* (e.g. sfnt wrapped bitmap)? */
|
|
|
968 |
root->bbox.xMin = face->header.xMin;
|
|
|
969 |
root->bbox.yMin = face->header.yMin;
|
|
|
970 |
root->bbox.xMax = face->header.xMax;
|
|
|
971 |
root->bbox.yMax = face->header.yMax;
|
|
|
972 |
root->units_per_EM = face->header.Units_Per_EM;
|
|
|
973 |
|
|
|
974 |
|
|
|
975 |
/* XXX: Computing the ascender/descender/height is very different */
|
|
|
976 |
/* from what the specification tells you. Apparently, we */
|
|
|
977 |
/* must be careful because */
|
|
|
978 |
/* */
|
|
|
979 |
/* - not all fonts have an OS/2 table; in this case, we take */
|
|
|
980 |
/* the values in the horizontal header. However, these */
|
|
|
981 |
/* values very often are not reliable. */
|
|
|
982 |
/* */
|
|
|
983 |
/* - otherwise, the correct typographic values are in the */
|
|
|
984 |
/* sTypoAscender, sTypoDescender & sTypoLineGap fields. */
|
|
|
985 |
/* */
|
|
|
986 |
/* However, certain fonts have these fields set to 0. */
|
|
|
987 |
/* Rather, they have usWinAscent & usWinDescent correctly */
|
|
|
988 |
/* set (but with different values). */
|
|
|
989 |
/* */
|
|
|
990 |
/* As an example, Arial Narrow is implemented through four */
|
|
|
991 |
/* files ARIALN.TTF, ARIALNI.TTF, ARIALNB.TTF & ARIALNBI.TTF */
|
|
|
992 |
/* */
|
|
|
993 |
/* Strangely, all fonts have the same values in their */
|
|
|
994 |
/* sTypoXXX fields, except ARIALNB which sets them to 0. */
|
|
|
995 |
/* */
|
|
|
996 |
/* On the other hand, they all have different */
|
|
|
997 |
/* usWinAscent/Descent values -- as a conclusion, the OS/2 */
|
|
|
998 |
/* table cannot be used to compute the text height reliably! */
|
|
|
999 |
/* */
|
|
|
1000 |
|
|
|
1001 |
/* The ascender/descender/height are computed from the OS/2 table */
|
|
|
1002 |
/* when found. Otherwise, they're taken from the horizontal */
|
|
|
1003 |
/* header. */
|
|
|
1004 |
/* */
|
|
|
1005 |
|
|
|
1006 |
root->ascender = face->horizontal.Ascender;
|
|
|
1007 |
root->descender = face->horizontal.Descender;
|
|
|
1008 |
|
|
|
1009 |
root->height = (FT_Short)( root->ascender - root->descender +
|
|
|
1010 |
face->horizontal.Line_Gap );
|
|
|
1011 |
|
|
|
1012 |
#if 0
|
|
|
1013 |
/* if the line_gap is 0, we add an extra 15% to the text height -- */
|
|
|
1014 |
/* this computation is based on various versions of Times New Roman */
|
|
|
1015 |
if ( face->horizontal.Line_Gap == 0 )
|
|
|
1016 |
root->height = (FT_Short)( ( root->height * 115 + 50 ) / 100 );
|
|
|
1017 |
#endif /* 0 */
|
|
|
1018 |
|
|
|
1019 |
#if 0
|
|
|
1020 |
/* some fonts have the OS/2 "sTypoAscender", "sTypoDescender" & */
|
|
|
1021 |
/* "sTypoLineGap" fields set to 0, like ARIALNB.TTF */
|
|
|
1022 |
if ( face->os2.version != 0xFFFFU && root->ascender )
|
|
|
1023 |
{
|
|
|
1024 |
FT_Int height;
|
|
|
1025 |
|
|
|
1026 |
|
|
|
1027 |
root->ascender = face->os2.sTypoAscender;
|
|
|
1028 |
root->descender = -face->os2.sTypoDescender;
|
|
|
1029 |
|
|
|
1030 |
height = root->ascender + root->descender + face->os2.sTypoLineGap;
|
|
|
1031 |
if ( height > root->height )
|
|
|
1032 |
root->height = height;
|
|
|
1033 |
}
|
|
|
1034 |
#endif /* 0 */
|
|
|
1035 |
|
|
|
1036 |
root->max_advance_width = face->horizontal.advance_Width_Max;
|
|
|
1037 |
root->max_advance_height = (FT_Short)( face->vertical_info
|
|
|
1038 |
? face->vertical.advance_Height_Max
|
|
|
1039 |
: root->height );
|
|
|
1040 |
|
|
|
1041 |
/* See http://www.microsoft.com/OpenType/OTSpec/post.htm -- */
|
|
|
1042 |
/* Adjust underline position from top edge to centre of */
|
|
|
1043 |
/* stroke to convert TrueType meaning to FreeType meaning. */
|
|
|
1044 |
root->underline_position = face->postscript.underlinePosition -
|
|
|
1045 |
face->postscript.underlineThickness / 2;
|
|
|
1046 |
root->underline_thickness = face->postscript.underlineThickness;
|
|
|
1047 |
}
|
|
|
1048 |
|
|
|
1049 |
}
|
|
|
1050 |
|
|
|
1051 |
Exit:
|
|
|
1052 |
FT_TRACE2(( "sfnt_load_face: done\n" ));
|
|
|
1053 |
|
|
|
1054 |
return error;
|
|
|
1055 |
}
|
|
|
1056 |
|
|
|
1057 |
|
|
|
1058 |
#undef LOAD_
|
|
|
1059 |
#undef LOADM_
|
|
|
1060 |
#undef GET_NAME
|
|
|
1061 |
|
|
|
1062 |
|
|
|
1063 |
FT_LOCAL_DEF( void )
|
|
|
1064 |
sfnt_done_face( TT_Face face )
|
|
|
1065 |
{
|
|
|
1066 |
FT_Memory memory;
|
|
|
1067 |
SFNT_Service sfnt;
|
|
|
1068 |
|
|
|
1069 |
|
|
|
1070 |
if ( !face )
|
|
|
1071 |
return;
|
|
|
1072 |
|
|
|
1073 |
memory = face->root.memory;
|
|
|
1074 |
sfnt = (SFNT_Service)face->sfnt;
|
|
|
1075 |
|
|
|
1076 |
if ( sfnt )
|
|
|
1077 |
{
|
|
|
1078 |
/* destroy the postscript names table if it is loaded */
|
|
|
1079 |
if ( sfnt->free_psnames )
|
|
|
1080 |
sfnt->free_psnames( face );
|
|
|
1081 |
|
|
|
1082 |
/* destroy the embedded bitmaps table if it is loaded */
|
|
|
1083 |
if ( sfnt->free_eblc )
|
|
|
1084 |
sfnt->free_eblc( face );
|
|
|
1085 |
}
|
|
|
1086 |
|
|
|
1087 |
#ifdef TT_CONFIG_OPTION_BDF
|
|
|
1088 |
/* freeing the embedded BDF properties */
|
|
|
1089 |
tt_face_free_bdf_props( face );
|
|
|
1090 |
#endif
|
|
|
1091 |
|
|
|
1092 |
/* freeing the kerning table */
|
|
|
1093 |
tt_face_done_kern( face );
|
|
|
1094 |
|
|
|
1095 |
/* freeing the collection table */
|
|
|
1096 |
FT_FREE( face->ttc_header.offsets );
|
|
|
1097 |
face->ttc_header.count = 0;
|
|
|
1098 |
|
|
|
1099 |
/* freeing table directory */
|
|
|
1100 |
FT_FREE( face->dir_tables );
|
|
|
1101 |
face->num_tables = 0;
|
|
|
1102 |
|
|
|
1103 |
{
|
|
|
1104 |
FT_Stream stream = FT_FACE_STREAM( face );
|
|
|
1105 |
|
|
|
1106 |
|
|
|
1107 |
/* simply release the 'cmap' table frame */
|
|
|
1108 |
FT_FRAME_RELEASE( face->cmap_table );
|
|
|
1109 |
face->cmap_size = 0;
|
|
|
1110 |
}
|
|
|
1111 |
|
|
|
1112 |
/* freeing the horizontal metrics */
|
|
|
1113 |
#ifndef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
1114 |
{
|
|
|
1115 |
FT_Stream stream = FT_FACE_STREAM( face );
|
|
|
1116 |
|
|
|
1117 |
|
|
|
1118 |
FT_FRAME_RELEASE( face->horz_metrics );
|
|
|
1119 |
FT_FRAME_RELEASE( face->vert_metrics );
|
|
|
1120 |
face->horz_metrics_size = 0;
|
|
|
1121 |
face->vert_metrics_size = 0;
|
|
|
1122 |
}
|
|
|
1123 |
#else
|
|
|
1124 |
FT_FREE( face->horizontal.long_metrics );
|
|
|
1125 |
FT_FREE( face->horizontal.short_metrics );
|
|
|
1126 |
#endif
|
|
|
1127 |
|
|
|
1128 |
/* freeing the vertical ones, if any */
|
|
|
1129 |
if ( face->vertical_info )
|
|
|
1130 |
{
|
|
|
1131 |
FT_FREE( face->vertical.long_metrics );
|
|
|
1132 |
FT_FREE( face->vertical.short_metrics );
|
|
|
1133 |
face->vertical_info = 0;
|
|
|
1134 |
}
|
|
|
1135 |
|
|
|
1136 |
/* freeing the gasp table */
|
|
|
1137 |
FT_FREE( face->gasp.gaspRanges );
|
|
|
1138 |
face->gasp.numRanges = 0;
|
|
|
1139 |
|
|
|
1140 |
/* freeing the name table */
|
|
|
1141 |
if ( sfnt )
|
|
|
1142 |
sfnt->free_name( face );
|
|
|
1143 |
|
|
|
1144 |
/* freeing family and style name */
|
|
|
1145 |
FT_FREE( face->root.family_name );
|
|
|
1146 |
FT_FREE( face->root.style_name );
|
|
|
1147 |
|
|
|
1148 |
/* freeing sbit size table */
|
|
|
1149 |
FT_FREE( face->root.available_sizes );
|
|
|
1150 |
face->root.num_fixed_sizes = 0;
|
|
|
1151 |
|
|
|
1152 |
FT_FREE( face->postscript_name );
|
|
|
1153 |
|
|
|
1154 |
face->sfnt = 0;
|
|
|
1155 |
}
|
|
|
1156 |
|
|
|
1157 |
|
|
|
1158 |
/* END */
|