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5172
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/***************************************************************************/
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2 |
/* */
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3 |
/* cffobjs.c */
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/* */
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/* OpenType objects manager (body). */
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/* */
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/* Copyright 1996-2011 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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16 |
/***************************************************************************/
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19 |
#include <ft2build.h>
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20 |
#include FT_INTERNAL_DEBUG_H
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21 |
#include FT_INTERNAL_CALC_H
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22 |
#include FT_INTERNAL_STREAM_H
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#include FT_ERRORS_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_INTERNAL_SFNT_H
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#include "cffobjs.h"
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#include "cffload.h"
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29 |
#include "cffcmap.h"
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30 |
#include "cfferrs.h"
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#include "cffpic.h"
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32 |
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/*************************************************************************/
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35 |
/* */
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36 |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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38 |
/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_cffobjs
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/*************************************************************************/
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/* */
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/* SIZE FUNCTIONS */
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/* */
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/* Note that we store the global hints in the size's `internal' root */
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/* field. */
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/* */
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/*************************************************************************/
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52 |
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53 |
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54 |
static PSH_Globals_Funcs
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cff_size_get_globals_funcs( CFF_Size size )
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56 |
{
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CFF_Face face = (CFF_Face)size->root.face;
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58 |
CFF_Font font = (CFF_Font)face->extra.data;
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PSHinter_Service pshinter = font->pshinter;
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FT_Module module;
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61 |
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62 |
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module = FT_Get_Module( size->root.face->driver->root.library,
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"pshinter" );
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return ( module && pshinter && pshinter->get_globals_funcs )
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? pshinter->get_globals_funcs( module )
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: 0;
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}
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69 |
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70 |
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FT_LOCAL_DEF( void )
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cff_size_done( FT_Size cffsize ) /* CFF_Size */
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{
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CFF_Size size = (CFF_Size)cffsize;
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CFF_Face face = (CFF_Face)size->root.face;
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76 |
CFF_Font font = (CFF_Font)face->extra.data;
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CFF_Internal internal = (CFF_Internal)cffsize->internal;
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79 |
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if ( internal )
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{
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PSH_Globals_Funcs funcs;
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83 |
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84 |
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funcs = cff_size_get_globals_funcs( size );
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86 |
if ( funcs )
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{
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88 |
FT_UInt i;
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89 |
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90 |
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91 |
funcs->destroy( internal->topfont );
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92 |
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for ( i = font->num_subfonts; i > 0; i-- )
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funcs->destroy( internal->subfonts[i - 1] );
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}
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/* `internal' is freed by destroy_size (in ftobjs.c) */
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}
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}
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100 |
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101 |
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102 |
/* CFF and Type 1 private dictionaries have slightly different */
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103 |
/* structures; we need to synthesize a Type 1 dictionary on the fly */
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104 |
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105 |
static void
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106 |
cff_make_private_dict( CFF_SubFont subfont,
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107 |
PS_Private priv )
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108 |
{
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109 |
CFF_Private cpriv = &subfont->private_dict;
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110 |
FT_UInt n, count;
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111 |
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112 |
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113 |
FT_MEM_ZERO( priv, sizeof ( *priv ) );
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114 |
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115 |
count = priv->num_blue_values = cpriv->num_blue_values;
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116 |
for ( n = 0; n < count; n++ )
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117 |
priv->blue_values[n] = (FT_Short)cpriv->blue_values[n];
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118 |
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119 |
count = priv->num_other_blues = cpriv->num_other_blues;
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120 |
for ( n = 0; n < count; n++ )
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121 |
priv->other_blues[n] = (FT_Short)cpriv->other_blues[n];
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122 |
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123 |
count = priv->num_family_blues = cpriv->num_family_blues;
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124 |
for ( n = 0; n < count; n++ )
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125 |
priv->family_blues[n] = (FT_Short)cpriv->family_blues[n];
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126 |
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127 |
count = priv->num_family_other_blues = cpriv->num_family_other_blues;
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128 |
for ( n = 0; n < count; n++ )
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priv->family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n];
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130 |
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131 |
priv->blue_scale = cpriv->blue_scale;
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132 |
priv->blue_shift = (FT_Int)cpriv->blue_shift;
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133 |
priv->blue_fuzz = (FT_Int)cpriv->blue_fuzz;
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134 |
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135 |
priv->standard_width[0] = (FT_UShort)cpriv->standard_width;
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136 |
priv->standard_height[0] = (FT_UShort)cpriv->standard_height;
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137 |
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138 |
count = priv->num_snap_widths = cpriv->num_snap_widths;
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139 |
for ( n = 0; n < count; n++ )
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140 |
priv->snap_widths[n] = (FT_Short)cpriv->snap_widths[n];
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141 |
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142 |
count = priv->num_snap_heights = cpriv->num_snap_heights;
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143 |
for ( n = 0; n < count; n++ )
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144 |
priv->snap_heights[n] = (FT_Short)cpriv->snap_heights[n];
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145 |
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146 |
priv->force_bold = cpriv->force_bold;
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147 |
priv->language_group = cpriv->language_group;
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148 |
priv->lenIV = cpriv->lenIV;
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149 |
}
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150 |
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151 |
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152 |
FT_LOCAL_DEF( FT_Error )
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153 |
cff_size_init( FT_Size cffsize ) /* CFF_Size */
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154 |
{
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155 |
CFF_Size size = (CFF_Size)cffsize;
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156 |
FT_Error error = CFF_Err_Ok;
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157 |
PSH_Globals_Funcs funcs = cff_size_get_globals_funcs( size );
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158 |
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159 |
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160 |
if ( funcs )
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161 |
{
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162 |
CFF_Face face = (CFF_Face)cffsize->face;
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163 |
CFF_Font font = (CFF_Font)face->extra.data;
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164 |
CFF_Internal internal;
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165 |
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166 |
PS_PrivateRec priv;
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167 |
FT_Memory memory = cffsize->face->memory;
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168 |
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169 |
FT_UInt i;
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170 |
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171 |
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172 |
if ( FT_NEW( internal ) )
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173 |
goto Exit;
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174 |
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175 |
cff_make_private_dict( &font->top_font, &priv );
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176 |
error = funcs->create( cffsize->face->memory, &priv,
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177 |
&internal->topfont );
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178 |
if ( error )
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179 |
goto Exit;
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180 |
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181 |
for ( i = font->num_subfonts; i > 0; i-- )
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182 |
{
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183 |
CFF_SubFont sub = font->subfonts[i - 1];
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184 |
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185 |
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186 |
cff_make_private_dict( sub, &priv );
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187 |
error = funcs->create( cffsize->face->memory, &priv,
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188 |
&internal->subfonts[i - 1] );
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189 |
if ( error )
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190 |
goto Exit;
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191 |
}
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192 |
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193 |
cffsize->internal = (FT_Size_Internal)(void*)internal;
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194 |
}
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195 |
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196 |
size->strike_index = 0xFFFFFFFFUL;
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197 |
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198 |
Exit:
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199 |
return error;
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200 |
}
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201 |
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202 |
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203 |
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
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204 |
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205 |
FT_LOCAL_DEF( FT_Error )
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206 |
cff_size_select( FT_Size size,
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207 |
FT_ULong strike_index )
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208 |
{
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209 |
CFF_Size cffsize = (CFF_Size)size;
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210 |
PSH_Globals_Funcs funcs;
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211 |
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212 |
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213 |
cffsize->strike_index = strike_index;
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214 |
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215 |
FT_Select_Metrics( size->face, strike_index );
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216 |
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217 |
funcs = cff_size_get_globals_funcs( cffsize );
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218 |
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219 |
if ( funcs )
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220 |
{
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221 |
CFF_Face face = (CFF_Face)size->face;
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222 |
CFF_Font font = (CFF_Font)face->extra.data;
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223 |
CFF_Internal internal = (CFF_Internal)size->internal;
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224 |
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225 |
FT_ULong top_upm = font->top_font.font_dict.units_per_em;
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226 |
FT_UInt i;
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227 |
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228 |
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229 |
funcs->set_scale( internal->topfont,
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230 |
size->metrics.x_scale, size->metrics.y_scale,
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231 |
0, 0 );
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232 |
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233 |
for ( i = font->num_subfonts; i > 0; i-- )
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234 |
{
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235 |
CFF_SubFont sub = font->subfonts[i - 1];
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236 |
FT_ULong sub_upm = sub->font_dict.units_per_em;
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237 |
FT_Pos x_scale, y_scale;
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238 |
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239 |
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240 |
if ( top_upm != sub_upm )
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241 |
{
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242 |
x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm );
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243 |
y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm );
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244 |
}
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245 |
else
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246 |
{
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247 |
x_scale = size->metrics.x_scale;
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248 |
y_scale = size->metrics.y_scale;
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249 |
}
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250 |
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251 |
funcs->set_scale( internal->subfonts[i - 1],
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252 |
x_scale, y_scale, 0, 0 );
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253 |
}
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254 |
}
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255 |
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256 |
return CFF_Err_Ok;
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257 |
}
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258 |
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259 |
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
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260 |
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261 |
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262 |
FT_LOCAL_DEF( FT_Error )
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263 |
cff_size_request( FT_Size size,
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264 |
FT_Size_Request req )
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265 |
{
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266 |
CFF_Size cffsize = (CFF_Size)size;
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267 |
PSH_Globals_Funcs funcs;
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268 |
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269 |
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270 |
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
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271 |
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272 |
if ( FT_HAS_FIXED_SIZES( size->face ) )
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273 |
{
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274 |
CFF_Face cffface = (CFF_Face)size->face;
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275 |
SFNT_Service sfnt = (SFNT_Service)cffface->sfnt;
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276 |
FT_ULong strike_index;
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277 |
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278 |
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279 |
if ( sfnt->set_sbit_strike( cffface, req, &strike_index ) )
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280 |
cffsize->strike_index = 0xFFFFFFFFUL;
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281 |
else
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282 |
return cff_size_select( size, strike_index );
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283 |
}
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284 |
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285 |
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
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286 |
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287 |
FT_Request_Metrics( size->face, req );
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288 |
|
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|
289 |
funcs = cff_size_get_globals_funcs( cffsize );
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290 |
|
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|
291 |
if ( funcs )
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|
292 |
{
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|
293 |
CFF_Face cffface = (CFF_Face)size->face;
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294 |
CFF_Font font = (CFF_Font)cffface->extra.data;
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295 |
CFF_Internal internal = (CFF_Internal)size->internal;
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296 |
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297 |
FT_ULong top_upm = font->top_font.font_dict.units_per_em;
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|
298 |
FT_UInt i;
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299 |
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|
300 |
|
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301 |
funcs->set_scale( internal->topfont,
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|
302 |
size->metrics.x_scale, size->metrics.y_scale,
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303 |
0, 0 );
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304 |
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305 |
for ( i = font->num_subfonts; i > 0; i-- )
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|
306 |
{
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|
307 |
CFF_SubFont sub = font->subfonts[i - 1];
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|
308 |
FT_ULong sub_upm = sub->font_dict.units_per_em;
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|
309 |
FT_Pos x_scale, y_scale;
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|
310 |
|
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|
311 |
|
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|
312 |
if ( top_upm != sub_upm )
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|
313 |
{
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|
314 |
x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm );
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|
315 |
y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm );
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|
316 |
}
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|
317 |
else
|
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|
318 |
{
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|
319 |
x_scale = size->metrics.x_scale;
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|
320 |
y_scale = size->metrics.y_scale;
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|
321 |
}
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322 |
|
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|
323 |
funcs->set_scale( internal->subfonts[i - 1],
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|
324 |
x_scale, y_scale, 0, 0 );
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|
325 |
}
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|
326 |
}
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|
327 |
|
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|
328 |
return CFF_Err_Ok;
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|
329 |
}
|
|
|
330 |
|
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|
331 |
|
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|
332 |
/*************************************************************************/
|
|
|
333 |
/* */
|
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|
334 |
/* SLOT FUNCTIONS */
|
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|
335 |
/* */
|
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|
336 |
/*************************************************************************/
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|
337 |
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|
338 |
FT_LOCAL_DEF( void )
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|
339 |
cff_slot_done( FT_GlyphSlot slot )
|
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|
340 |
{
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|
341 |
slot->internal->glyph_hints = 0;
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|
342 |
}
|
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|
343 |
|
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|
344 |
|
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|
345 |
FT_LOCAL_DEF( FT_Error )
|
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|
346 |
cff_slot_init( FT_GlyphSlot slot )
|
|
|
347 |
{
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|
|
348 |
CFF_Face face = (CFF_Face)slot->face;
|
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|
349 |
CFF_Font font = (CFF_Font)face->extra.data;
|
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|
350 |
PSHinter_Service pshinter = font->pshinter;
|
|
|
351 |
|
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|
352 |
|
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|
353 |
if ( pshinter )
|
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|
354 |
{
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|
355 |
FT_Module module;
|
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|
356 |
|
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|
357 |
|
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|
358 |
module = FT_Get_Module( slot->face->driver->root.library,
|
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|
359 |
"pshinter" );
|
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|
360 |
if ( module )
|
|
|
361 |
{
|
|
|
362 |
T2_Hints_Funcs funcs;
|
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|
363 |
|
|
|
364 |
|
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|
365 |
funcs = pshinter->get_t2_funcs( module );
|
|
|
366 |
slot->internal->glyph_hints = (void*)funcs;
|
|
|
367 |
}
|
|
|
368 |
}
|
|
|
369 |
|
|
|
370 |
return CFF_Err_Ok;
|
|
|
371 |
}
|
|
|
372 |
|
|
|
373 |
|
|
|
374 |
/*************************************************************************/
|
|
|
375 |
/* */
|
|
|
376 |
/* FACE FUNCTIONS */
|
|
|
377 |
/* */
|
|
|
378 |
/*************************************************************************/
|
|
|
379 |
|
|
|
380 |
static FT_String*
|
|
|
381 |
cff_strcpy( FT_Memory memory,
|
|
|
382 |
const FT_String* source )
|
|
|
383 |
{
|
|
|
384 |
FT_Error error;
|
|
|
385 |
FT_String* result;
|
|
|
386 |
|
|
|
387 |
|
|
|
388 |
(void)FT_STRDUP( result, source );
|
|
|
389 |
|
|
|
390 |
FT_UNUSED( error );
|
|
|
391 |
|
|
|
392 |
return result;
|
|
|
393 |
}
|
|
|
394 |
|
|
|
395 |
|
|
|
396 |
/* Strip all subset prefixes of the form `ABCDEF+'. Usually, there */
|
|
|
397 |
/* is only one, but font names like `APCOOG+JFABTD+FuturaBQ-Bold' */
|
|
|
398 |
/* have been seen in the wild. */
|
|
|
399 |
|
|
|
400 |
static void
|
|
|
401 |
remove_subset_prefix( FT_String* name )
|
|
|
402 |
{
|
|
|
403 |
FT_Int32 idx = 0;
|
|
|
404 |
FT_Int32 length = strlen( name ) + 1;
|
|
|
405 |
FT_Bool continue_search = 1;
|
|
|
406 |
|
|
|
407 |
|
|
|
408 |
while ( continue_search )
|
|
|
409 |
{
|
|
|
410 |
if ( length >= 7 && name[6] == '+' )
|
|
|
411 |
{
|
|
|
412 |
for ( idx = 0; idx < 6; idx++ )
|
|
|
413 |
{
|
|
|
414 |
/* ASCII uppercase letters */
|
|
|
415 |
if ( !( 'A' <= name[idx] && name[idx] <= 'Z' ) )
|
|
|
416 |
continue_search = 0;
|
|
|
417 |
}
|
|
|
418 |
|
|
|
419 |
if ( continue_search )
|
|
|
420 |
{
|
|
|
421 |
for ( idx = 7; idx < length; idx++ )
|
|
|
422 |
name[idx - 7] = name[idx];
|
|
|
423 |
length -= 7;
|
|
|
424 |
}
|
|
|
425 |
}
|
|
|
426 |
else
|
|
|
427 |
continue_search = 0;
|
|
|
428 |
}
|
|
|
429 |
}
|
|
|
430 |
|
|
|
431 |
|
|
|
432 |
/* Remove the style part from the family name (if present). */
|
|
|
433 |
|
|
|
434 |
static void
|
|
|
435 |
remove_style( FT_String* family_name,
|
|
|
436 |
const FT_String* style_name )
|
|
|
437 |
{
|
|
|
438 |
FT_Int32 family_name_length, style_name_length;
|
|
|
439 |
|
|
|
440 |
|
|
|
441 |
family_name_length = strlen( family_name );
|
|
|
442 |
style_name_length = strlen( style_name );
|
|
|
443 |
|
|
|
444 |
if ( family_name_length > style_name_length )
|
|
|
445 |
{
|
|
|
446 |
FT_Int idx;
|
|
|
447 |
|
|
|
448 |
|
|
|
449 |
for ( idx = 1; idx <= style_name_length; ++idx )
|
|
|
450 |
{
|
|
|
451 |
if ( family_name[family_name_length - idx] !=
|
|
|
452 |
style_name[style_name_length - idx] )
|
|
|
453 |
break;
|
|
|
454 |
}
|
|
|
455 |
|
|
|
456 |
if ( idx > style_name_length )
|
|
|
457 |
{
|
|
|
458 |
/* family_name ends with style_name; remove it */
|
|
|
459 |
idx = family_name_length - style_name_length - 1;
|
|
|
460 |
|
|
|
461 |
/* also remove special characters */
|
|
|
462 |
/* between real family name and style */
|
|
|
463 |
while ( idx > 0 &&
|
|
|
464 |
( family_name[idx] == '-' ||
|
|
|
465 |
family_name[idx] == ' ' ||
|
|
|
466 |
family_name[idx] == '_' ||
|
|
|
467 |
family_name[idx] == '+' ) )
|
|
|
468 |
--idx;
|
|
|
469 |
|
|
|
470 |
if ( idx > 0 )
|
|
|
471 |
family_name[idx + 1] = '\0';
|
|
|
472 |
}
|
|
|
473 |
}
|
|
|
474 |
}
|
|
|
475 |
|
|
|
476 |
|
|
|
477 |
FT_LOCAL_DEF( FT_Error )
|
|
|
478 |
cff_face_init( FT_Stream stream,
|
|
|
479 |
FT_Face cffface, /* CFF_Face */
|
|
|
480 |
FT_Int face_index,
|
|
|
481 |
FT_Int num_params,
|
|
|
482 |
FT_Parameter* params )
|
|
|
483 |
{
|
|
|
484 |
CFF_Face face = (CFF_Face)cffface;
|
|
|
485 |
FT_Error error;
|
|
|
486 |
SFNT_Service sfnt;
|
|
|
487 |
FT_Service_PsCMaps psnames;
|
|
|
488 |
PSHinter_Service pshinter;
|
|
|
489 |
FT_Bool pure_cff = 1;
|
|
|
490 |
FT_Bool sfnt_format = 0;
|
|
|
491 |
FT_Library library = cffface->driver->root.library;
|
|
|
492 |
|
|
|
493 |
|
|
|
494 |
sfnt = (SFNT_Service)FT_Get_Module_Interface(
|
|
|
495 |
library, "sfnt" );
|
|
|
496 |
if ( !sfnt )
|
|
|
497 |
goto Bad_Format;
|
|
|
498 |
|
|
|
499 |
FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
|
|
|
500 |
|
|
|
501 |
pshinter = (PSHinter_Service)FT_Get_Module_Interface(
|
|
|
502 |
library, "pshinter" );
|
|
|
503 |
|
|
|
504 |
/* create input stream from resource */
|
|
|
505 |
if ( FT_STREAM_SEEK( 0 ) )
|
|
|
506 |
goto Exit;
|
|
|
507 |
|
|
|
508 |
/* check whether we have a valid OpenType file */
|
|
|
509 |
error = sfnt->init_face( stream, face, face_index, num_params, params );
|
|
|
510 |
if ( !error )
|
|
|
511 |
{
|
|
|
512 |
if ( face->format_tag != TTAG_OTTO ) /* `OTTO'; OpenType/CFF font */
|
|
|
513 |
{
|
|
|
514 |
FT_TRACE2(( "[not a valid OpenType/CFF font]\n" ));
|
|
|
515 |
goto Bad_Format;
|
|
|
516 |
}
|
|
|
517 |
|
|
|
518 |
/* if we are performing a simple font format check, exit immediately */
|
|
|
519 |
if ( face_index < 0 )
|
|
|
520 |
return CFF_Err_Ok;
|
|
|
521 |
|
|
|
522 |
/* UNDOCUMENTED! A CFF in an SFNT can have only a single font. */
|
|
|
523 |
if ( face_index > 0 )
|
|
|
524 |
{
|
|
|
525 |
FT_ERROR(( "cff_face_init: invalid face index\n" ));
|
|
|
526 |
error = CFF_Err_Invalid_Argument;
|
|
|
527 |
goto Exit;
|
|
|
528 |
}
|
|
|
529 |
|
|
|
530 |
sfnt_format = 1;
|
|
|
531 |
|
|
|
532 |
/* now, the font can be either an OpenType/CFF font, or an SVG CEF */
|
|
|
533 |
/* font; in the latter case it doesn't have a `head' table */
|
|
|
534 |
error = face->goto_table( face, TTAG_head, stream, 0 );
|
|
|
535 |
if ( !error )
|
|
|
536 |
{
|
|
|
537 |
pure_cff = 0;
|
|
|
538 |
|
|
|
539 |
/* load font directory */
|
|
|
540 |
error = sfnt->load_face( stream, face, 0, num_params, params );
|
|
|
541 |
if ( error )
|
|
|
542 |
goto Exit;
|
|
|
543 |
}
|
|
|
544 |
else
|
|
|
545 |
{
|
|
|
546 |
/* load the `cmap' table explicitly */
|
|
|
547 |
error = sfnt->load_cmap( face, stream );
|
|
|
548 |
if ( error )
|
|
|
549 |
goto Exit;
|
|
|
550 |
|
|
|
551 |
/* XXX: we don't load the GPOS table, as OpenType Layout */
|
|
|
552 |
/* support will be added later to a layout library on top of */
|
|
|
553 |
/* FreeType 2 */
|
|
|
554 |
}
|
|
|
555 |
|
|
|
556 |
/* now load the CFF part of the file */
|
|
|
557 |
error = face->goto_table( face, TTAG_CFF, stream, 0 );
|
|
|
558 |
if ( error )
|
|
|
559 |
goto Exit;
|
|
|
560 |
}
|
|
|
561 |
else
|
|
|
562 |
{
|
|
|
563 |
/* rewind to start of file; we are going to load a pure-CFF font */
|
|
|
564 |
if ( FT_STREAM_SEEK( 0 ) )
|
|
|
565 |
goto Exit;
|
|
|
566 |
error = CFF_Err_Ok;
|
|
|
567 |
}
|
|
|
568 |
|
|
|
569 |
/* now load and parse the CFF table in the file */
|
|
|
570 |
{
|
|
|
571 |
CFF_Font cff;
|
|
|
572 |
CFF_FontRecDict dict;
|
|
|
573 |
FT_Memory memory = cffface->memory;
|
|
|
574 |
FT_Int32 flags;
|
|
|
575 |
FT_UInt i;
|
|
|
576 |
|
|
|
577 |
|
|
|
578 |
if ( FT_NEW( cff ) )
|
|
|
579 |
goto Exit;
|
|
|
580 |
|
|
|
581 |
face->extra.data = cff;
|
|
|
582 |
error = cff_font_load( library, stream, face_index, cff, pure_cff );
|
|
|
583 |
if ( error )
|
|
|
584 |
goto Exit;
|
|
|
585 |
|
|
|
586 |
cff->pshinter = pshinter;
|
|
|
587 |
cff->psnames = psnames;
|
|
|
588 |
|
|
|
589 |
cffface->face_index = face_index;
|
|
|
590 |
|
|
|
591 |
/* Complement the root flags with some interesting information. */
|
|
|
592 |
/* Note that this is only necessary for pure CFF and CEF fonts; */
|
|
|
593 |
/* SFNT based fonts use the `name' table instead. */
|
|
|
594 |
|
|
|
595 |
cffface->num_glyphs = cff->num_glyphs;
|
|
|
596 |
|
|
|
597 |
dict = &cff->top_font.font_dict;
|
|
|
598 |
|
|
|
599 |
/* we need the `PSNames' module for CFF and CEF formats */
|
|
|
600 |
/* which aren't CID-keyed */
|
|
|
601 |
if ( dict->cid_registry == 0xFFFFU && !psnames )
|
|
|
602 |
{
|
|
|
603 |
FT_ERROR(( "cff_face_init:"
|
|
|
604 |
" cannot open CFF & CEF fonts\n"
|
|
|
605 |
" "
|
|
|
606 |
" without the `PSNames' module\n" ));
|
|
|
607 |
goto Bad_Format;
|
|
|
608 |
}
|
|
|
609 |
|
|
|
610 |
if ( !dict->units_per_em )
|
|
|
611 |
dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM;
|
|
|
612 |
|
|
|
613 |
/* Normalize the font matrix so that `matrix->xx' is 1; the */
|
|
|
614 |
/* scaling is done with `units_per_em' then (at this point, */
|
|
|
615 |
/* it already contains the scaling factor, but without */
|
|
|
616 |
/* normalization of the matrix). */
|
|
|
617 |
/* */
|
|
|
618 |
/* Note that the offsets must be expressed in integer font */
|
|
|
619 |
/* units. */
|
|
|
620 |
|
|
|
621 |
{
|
|
|
622 |
FT_Matrix* matrix = &dict->font_matrix;
|
|
|
623 |
FT_Vector* offset = &dict->font_offset;
|
|
|
624 |
FT_ULong* upm = &dict->units_per_em;
|
|
|
625 |
FT_Fixed temp = FT_ABS( matrix->yy );
|
|
|
626 |
|
|
|
627 |
|
|
|
628 |
if ( temp != 0x10000L )
|
|
|
629 |
{
|
|
|
630 |
*upm = FT_DivFix( *upm, temp );
|
|
|
631 |
|
|
|
632 |
matrix->xx = FT_DivFix( matrix->xx, temp );
|
|
|
633 |
matrix->yx = FT_DivFix( matrix->yx, temp );
|
|
|
634 |
matrix->xy = FT_DivFix( matrix->xy, temp );
|
|
|
635 |
matrix->yy = FT_DivFix( matrix->yy, temp );
|
|
|
636 |
offset->x = FT_DivFix( offset->x, temp );
|
|
|
637 |
offset->y = FT_DivFix( offset->y, temp );
|
|
|
638 |
}
|
|
|
639 |
|
|
|
640 |
offset->x >>= 16;
|
|
|
641 |
offset->y >>= 16;
|
|
|
642 |
}
|
|
|
643 |
|
|
|
644 |
for ( i = cff->num_subfonts; i > 0; i-- )
|
|
|
645 |
{
|
|
|
646 |
CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict;
|
|
|
647 |
CFF_FontRecDict top = &cff->top_font.font_dict;
|
|
|
648 |
|
|
|
649 |
FT_Matrix* matrix;
|
|
|
650 |
FT_Vector* offset;
|
|
|
651 |
FT_ULong* upm;
|
|
|
652 |
FT_Fixed temp;
|
|
|
653 |
|
|
|
654 |
|
|
|
655 |
if ( sub->units_per_em )
|
|
|
656 |
{
|
|
|
657 |
FT_Long scaling;
|
|
|
658 |
|
|
|
659 |
|
|
|
660 |
if ( top->units_per_em > 1 && sub->units_per_em > 1 )
|
|
|
661 |
scaling = FT_MIN( top->units_per_em, sub->units_per_em );
|
|
|
662 |
else
|
|
|
663 |
scaling = 1;
|
|
|
664 |
|
|
|
665 |
FT_Matrix_Multiply_Scaled( &top->font_matrix,
|
|
|
666 |
&sub->font_matrix,
|
|
|
667 |
scaling );
|
|
|
668 |
FT_Vector_Transform_Scaled( &sub->font_offset,
|
|
|
669 |
&top->font_matrix,
|
|
|
670 |
scaling );
|
|
|
671 |
|
|
|
672 |
sub->units_per_em = FT_MulDiv( sub->units_per_em,
|
|
|
673 |
top->units_per_em,
|
|
|
674 |
scaling );
|
|
|
675 |
}
|
|
|
676 |
else
|
|
|
677 |
{
|
|
|
678 |
sub->font_matrix = top->font_matrix;
|
|
|
679 |
sub->font_offset = top->font_offset;
|
|
|
680 |
|
|
|
681 |
sub->units_per_em = top->units_per_em;
|
|
|
682 |
}
|
|
|
683 |
|
|
|
684 |
matrix = &sub->font_matrix;
|
|
|
685 |
offset = &sub->font_offset;
|
|
|
686 |
upm = &sub->units_per_em;
|
|
|
687 |
temp = FT_ABS( matrix->yy );
|
|
|
688 |
|
|
|
689 |
if ( temp != 0x10000L )
|
|
|
690 |
{
|
|
|
691 |
*upm = FT_DivFix( *upm, temp );
|
|
|
692 |
|
|
|
693 |
/* if *upm is larger than 100*1000 we divide by 1000 -- */
|
|
|
694 |
/* this can happen if e.g. there is no top-font FontMatrix */
|
|
|
695 |
/* and the subfont FontMatrix already contains the complete */
|
|
|
696 |
/* scaling for the subfont (see section 5.11 of the PLRM) */
|
|
|
697 |
|
|
|
698 |
/* 100 is a heuristic value */
|
|
|
699 |
|
|
|
700 |
if ( *upm > 100L * 1000L )
|
|
|
701 |
*upm = ( *upm + 500 ) / 1000;
|
|
|
702 |
|
|
|
703 |
matrix->xx = FT_DivFix( matrix->xx, temp );
|
|
|
704 |
matrix->yx = FT_DivFix( matrix->yx, temp );
|
|
|
705 |
matrix->xy = FT_DivFix( matrix->xy, temp );
|
|
|
706 |
matrix->yy = FT_DivFix( matrix->yy, temp );
|
|
|
707 |
offset->x = FT_DivFix( offset->x, temp );
|
|
|
708 |
offset->y = FT_DivFix( offset->y, temp );
|
|
|
709 |
}
|
|
|
710 |
|
|
|
711 |
offset->x >>= 16;
|
|
|
712 |
offset->y >>= 16;
|
|
|
713 |
}
|
|
|
714 |
|
|
|
715 |
if ( pure_cff )
|
|
|
716 |
{
|
|
|
717 |
char* style_name = NULL;
|
|
|
718 |
|
|
|
719 |
|
|
|
720 |
/* set up num_faces */
|
|
|
721 |
cffface->num_faces = cff->num_faces;
|
|
|
722 |
|
|
|
723 |
/* compute number of glyphs */
|
|
|
724 |
if ( dict->cid_registry != 0xFFFFU )
|
|
|
725 |
cffface->num_glyphs = cff->charset.max_cid + 1;
|
|
|
726 |
else
|
|
|
727 |
cffface->num_glyphs = cff->charstrings_index.count;
|
|
|
728 |
|
|
|
729 |
/* set global bbox, as well as EM size */
|
|
|
730 |
cffface->bbox.xMin = dict->font_bbox.xMin >> 16;
|
|
|
731 |
cffface->bbox.yMin = dict->font_bbox.yMin >> 16;
|
|
|
732 |
/* no `U' suffix here to 0xFFFF! */
|
|
|
733 |
cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16;
|
|
|
734 |
cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16;
|
|
|
735 |
|
|
|
736 |
cffface->units_per_EM = (FT_UShort)( dict->units_per_em );
|
|
|
737 |
|
|
|
738 |
cffface->ascender = (FT_Short)( cffface->bbox.yMax );
|
|
|
739 |
cffface->descender = (FT_Short)( cffface->bbox.yMin );
|
|
|
740 |
|
|
|
741 |
cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 );
|
|
|
742 |
if ( cffface->height < cffface->ascender - cffface->descender )
|
|
|
743 |
cffface->height = (FT_Short)( cffface->ascender - cffface->descender );
|
|
|
744 |
|
|
|
745 |
cffface->underline_position =
|
|
|
746 |
(FT_Short)( dict->underline_position >> 16 );
|
|
|
747 |
cffface->underline_thickness =
|
|
|
748 |
(FT_Short)( dict->underline_thickness >> 16 );
|
|
|
749 |
|
|
|
750 |
/* retrieve font family & style name */
|
|
|
751 |
cffface->family_name = cff_index_get_name( cff, face_index );
|
|
|
752 |
if ( cffface->family_name )
|
|
|
753 |
{
|
|
|
754 |
char* full = cff_index_get_sid_string( cff,
|
|
|
755 |
dict->full_name );
|
|
|
756 |
char* fullp = full;
|
|
|
757 |
char* family = cffface->family_name;
|
|
|
758 |
char* family_name = NULL;
|
|
|
759 |
|
|
|
760 |
|
|
|
761 |
remove_subset_prefix( cffface->family_name );
|
|
|
762 |
|
|
|
763 |
if ( dict->family_name )
|
|
|
764 |
{
|
|
|
765 |
family_name = cff_index_get_sid_string( cff,
|
|
|
766 |
dict->family_name );
|
|
|
767 |
if ( family_name )
|
|
|
768 |
family = family_name;
|
|
|
769 |
}
|
|
|
770 |
|
|
|
771 |
/* We try to extract the style name from the full name. */
|
|
|
772 |
/* We need to ignore spaces and dashes during the search. */
|
|
|
773 |
if ( full && family )
|
|
|
774 |
{
|
|
|
775 |
while ( *fullp )
|
|
|
776 |
{
|
|
|
777 |
/* skip common characters at the start of both strings */
|
|
|
778 |
if ( *fullp == *family )
|
|
|
779 |
{
|
|
|
780 |
family++;
|
|
|
781 |
fullp++;
|
|
|
782 |
continue;
|
|
|
783 |
}
|
|
|
784 |
|
|
|
785 |
/* ignore spaces and dashes in full name during comparison */
|
|
|
786 |
if ( *fullp == ' ' || *fullp == '-' )
|
|
|
787 |
{
|
|
|
788 |
fullp++;
|
|
|
789 |
continue;
|
|
|
790 |
}
|
|
|
791 |
|
|
|
792 |
/* ignore spaces and dashes in family name during comparison */
|
|
|
793 |
if ( *family == ' ' || *family == '-' )
|
|
|
794 |
{
|
|
|
795 |
family++;
|
|
|
796 |
continue;
|
|
|
797 |
}
|
|
|
798 |
|
|
|
799 |
if ( !*family && *fullp )
|
|
|
800 |
{
|
|
|
801 |
/* The full name begins with the same characters as the */
|
|
|
802 |
/* family name, with spaces and dashes removed. In this */
|
|
|
803 |
/* case, the remaining string in `fullp' will be used as */
|
|
|
804 |
/* the style name. */
|
|
|
805 |
style_name = cff_strcpy( memory, fullp );
|
|
|
806 |
|
|
|
807 |
/* remove the style part from the family name (if present) */
|
|
|
808 |
remove_style( cffface->family_name, style_name );
|
|
|
809 |
}
|
|
|
810 |
break;
|
|
|
811 |
}
|
|
|
812 |
}
|
|
|
813 |
}
|
|
|
814 |
else
|
|
|
815 |
{
|
|
|
816 |
char *cid_font_name =
|
|
|
817 |
cff_index_get_sid_string( cff,
|
|
|
818 |
dict->cid_font_name );
|
|
|
819 |
|
|
|
820 |
|
|
|
821 |
/* do we have a `/FontName' for a CID-keyed font? */
|
|
|
822 |
if ( cid_font_name )
|
|
|
823 |
cffface->family_name = cff_strcpy( memory, cid_font_name );
|
|
|
824 |
}
|
|
|
825 |
|
|
|
826 |
if ( style_name )
|
|
|
827 |
cffface->style_name = style_name;
|
|
|
828 |
else
|
|
|
829 |
/* assume "Regular" style if we don't know better */
|
|
|
830 |
cffface->style_name = cff_strcpy( memory, (char *)"Regular" );
|
|
|
831 |
|
|
|
832 |
/*******************************************************************/
|
|
|
833 |
/* */
|
|
|
834 |
/* Compute face flags. */
|
|
|
835 |
/* */
|
|
|
836 |
flags = (FT_UInt32)( FT_FACE_FLAG_SCALABLE | /* scalable outlines */
|
|
|
837 |
FT_FACE_FLAG_HORIZONTAL | /* horizontal data */
|
|
|
838 |
FT_FACE_FLAG_HINTER ); /* has native hinter */
|
|
|
839 |
|
|
|
840 |
if ( sfnt_format )
|
|
|
841 |
flags |= (FT_UInt32)FT_FACE_FLAG_SFNT;
|
|
|
842 |
|
|
|
843 |
/* fixed width font? */
|
|
|
844 |
if ( dict->is_fixed_pitch )
|
|
|
845 |
flags |= (FT_UInt32)FT_FACE_FLAG_FIXED_WIDTH;
|
|
|
846 |
|
|
|
847 |
/* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */
|
|
|
848 |
#if 0
|
|
|
849 |
/* kerning available? */
|
|
|
850 |
if ( face->kern_pairs )
|
|
|
851 |
flags |= (FT_UInt32)FT_FACE_FLAG_KERNING;
|
|
|
852 |
#endif
|
|
|
853 |
|
|
|
854 |
cffface->face_flags = flags;
|
|
|
855 |
|
|
|
856 |
/*******************************************************************/
|
|
|
857 |
/* */
|
|
|
858 |
/* Compute style flags. */
|
|
|
859 |
/* */
|
|
|
860 |
flags = 0;
|
|
|
861 |
|
|
|
862 |
if ( dict->italic_angle )
|
|
|
863 |
flags |= FT_STYLE_FLAG_ITALIC;
|
|
|
864 |
|
|
|
865 |
{
|
|
|
866 |
char *weight = cff_index_get_sid_string( cff,
|
|
|
867 |
dict->weight );
|
|
|
868 |
|
|
|
869 |
|
|
|
870 |
if ( weight )
|
|
|
871 |
if ( !ft_strcmp( weight, "Bold" ) ||
|
|
|
872 |
!ft_strcmp( weight, "Black" ) )
|
|
|
873 |
flags |= FT_STYLE_FLAG_BOLD;
|
|
|
874 |
}
|
|
|
875 |
|
|
|
876 |
/* double check */
|
|
|
877 |
if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name )
|
|
|
878 |
if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) ||
|
|
|
879 |
!ft_strncmp( cffface->style_name, "Black", 5 ) )
|
|
|
880 |
flags |= FT_STYLE_FLAG_BOLD;
|
|
|
881 |
|
|
|
882 |
cffface->style_flags = flags;
|
|
|
883 |
}
|
|
|
884 |
|
|
|
885 |
|
|
|
886 |
#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
|
|
|
887 |
/* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */
|
|
|
888 |
/* has unset this flag because of the 3.0 `post' table. */
|
|
|
889 |
if ( dict->cid_registry == 0xFFFFU )
|
|
|
890 |
cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES;
|
|
|
891 |
#endif
|
|
|
892 |
|
|
|
893 |
if ( dict->cid_registry != 0xFFFFU && pure_cff )
|
|
|
894 |
cffface->face_flags |= FT_FACE_FLAG_CID_KEYED;
|
|
|
895 |
|
|
|
896 |
|
|
|
897 |
/*******************************************************************/
|
|
|
898 |
/* */
|
|
|
899 |
/* Compute char maps. */
|
|
|
900 |
/* */
|
|
|
901 |
|
|
|
902 |
/* Try to synthesize a Unicode charmap if there is none available */
|
|
|
903 |
/* already. If an OpenType font contains a Unicode "cmap", we */
|
|
|
904 |
/* will use it, whatever be in the CFF part of the file. */
|
|
|
905 |
{
|
|
|
906 |
FT_CharMapRec cmaprec;
|
|
|
907 |
FT_CharMap cmap;
|
|
|
908 |
FT_UInt nn;
|
|
|
909 |
CFF_Encoding encoding = &cff->encoding;
|
|
|
910 |
|
|
|
911 |
|
|
|
912 |
for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ )
|
|
|
913 |
{
|
|
|
914 |
cmap = cffface->charmaps[nn];
|
|
|
915 |
|
|
|
916 |
/* Windows Unicode? */
|
|
|
917 |
if ( cmap->platform_id == TT_PLATFORM_MICROSOFT &&
|
|
|
918 |
cmap->encoding_id == TT_MS_ID_UNICODE_CS )
|
|
|
919 |
goto Skip_Unicode;
|
|
|
920 |
|
|
|
921 |
/* Apple Unicode platform id? */
|
|
|
922 |
if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE )
|
|
|
923 |
goto Skip_Unicode; /* Apple Unicode */
|
|
|
924 |
}
|
|
|
925 |
|
|
|
926 |
/* since CID-keyed fonts don't contain glyph names, we can't */
|
|
|
927 |
/* construct a cmap */
|
|
|
928 |
if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU )
|
|
|
929 |
goto Exit;
|
|
|
930 |
|
|
|
931 |
#ifdef FT_MAX_CHARMAP_CACHEABLE
|
|
|
932 |
if ( nn + 1 > FT_MAX_CHARMAP_CACHEABLE )
|
|
|
933 |
{
|
|
|
934 |
FT_ERROR(( "cff_face_init: no Unicode cmap is found, "
|
|
|
935 |
"and too many subtables (%d) to add synthesized cmap\n",
|
|
|
936 |
nn ));
|
|
|
937 |
goto Exit;
|
|
|
938 |
}
|
|
|
939 |
#endif
|
|
|
940 |
|
|
|
941 |
/* we didn't find a Unicode charmap -- synthesize one */
|
|
|
942 |
cmaprec.face = cffface;
|
|
|
943 |
cmaprec.platform_id = TT_PLATFORM_MICROSOFT;
|
|
|
944 |
cmaprec.encoding_id = TT_MS_ID_UNICODE_CS;
|
|
|
945 |
cmaprec.encoding = FT_ENCODING_UNICODE;
|
|
|
946 |
|
|
|
947 |
nn = (FT_UInt)cffface->num_charmaps;
|
|
|
948 |
|
|
|
949 |
error = FT_CMap_New( &FT_CFF_CMAP_UNICODE_CLASS_REC_GET, NULL,
|
|
|
950 |
&cmaprec, NULL );
|
|
|
951 |
if ( error && FT_Err_No_Unicode_Glyph_Name != error )
|
|
|
952 |
goto Exit;
|
|
|
953 |
error = FT_Err_Ok;
|
|
|
954 |
|
|
|
955 |
/* if no Unicode charmap was previously selected, select this one */
|
|
|
956 |
if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps )
|
|
|
957 |
cffface->charmap = cffface->charmaps[nn];
|
|
|
958 |
|
|
|
959 |
Skip_Unicode:
|
|
|
960 |
#ifdef FT_MAX_CHARMAP_CACHEABLE
|
|
|
961 |
if ( nn > FT_MAX_CHARMAP_CACHEABLE )
|
|
|
962 |
{
|
|
|
963 |
FT_ERROR(( "cff_face_init: Unicode cmap is found, "
|
|
|
964 |
"but too many preceding subtables (%d) to access\n",
|
|
|
965 |
nn - 1 ));
|
|
|
966 |
goto Exit;
|
|
|
967 |
}
|
|
|
968 |
#endif
|
|
|
969 |
if ( encoding->count > 0 )
|
|
|
970 |
{
|
|
|
971 |
FT_CMap_Class clazz;
|
|
|
972 |
|
|
|
973 |
|
|
|
974 |
cmaprec.face = cffface;
|
|
|
975 |
cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */
|
|
|
976 |
|
|
|
977 |
if ( encoding->offset == 0 )
|
|
|
978 |
{
|
|
|
979 |
cmaprec.encoding_id = TT_ADOBE_ID_STANDARD;
|
|
|
980 |
cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD;
|
|
|
981 |
clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET;
|
|
|
982 |
}
|
|
|
983 |
else if ( encoding->offset == 1 )
|
|
|
984 |
{
|
|
|
985 |
cmaprec.encoding_id = TT_ADOBE_ID_EXPERT;
|
|
|
986 |
cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT;
|
|
|
987 |
clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET;
|
|
|
988 |
}
|
|
|
989 |
else
|
|
|
990 |
{
|
|
|
991 |
cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM;
|
|
|
992 |
cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM;
|
|
|
993 |
clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET;
|
|
|
994 |
}
|
|
|
995 |
|
|
|
996 |
error = FT_CMap_New( clazz, NULL, &cmaprec, NULL );
|
|
|
997 |
}
|
|
|
998 |
}
|
|
|
999 |
}
|
|
|
1000 |
|
|
|
1001 |
Exit:
|
|
|
1002 |
return error;
|
|
|
1003 |
|
|
|
1004 |
Bad_Format:
|
|
|
1005 |
error = CFF_Err_Unknown_File_Format;
|
|
|
1006 |
goto Exit;
|
|
|
1007 |
}
|
|
|
1008 |
|
|
|
1009 |
|
|
|
1010 |
FT_LOCAL_DEF( void )
|
|
|
1011 |
cff_face_done( FT_Face cffface ) /* CFF_Face */
|
|
|
1012 |
{
|
|
|
1013 |
CFF_Face face = (CFF_Face)cffface;
|
|
|
1014 |
FT_Memory memory;
|
|
|
1015 |
SFNT_Service sfnt;
|
|
|
1016 |
|
|
|
1017 |
|
|
|
1018 |
if ( !face )
|
|
|
1019 |
return;
|
|
|
1020 |
|
|
|
1021 |
memory = cffface->memory;
|
|
|
1022 |
sfnt = (SFNT_Service)face->sfnt;
|
|
|
1023 |
|
|
|
1024 |
if ( sfnt )
|
|
|
1025 |
sfnt->done_face( face );
|
|
|
1026 |
|
|
|
1027 |
{
|
|
|
1028 |
CFF_Font cff = (CFF_Font)face->extra.data;
|
|
|
1029 |
|
|
|
1030 |
|
|
|
1031 |
if ( cff )
|
|
|
1032 |
{
|
|
|
1033 |
cff_font_done( cff );
|
|
|
1034 |
FT_FREE( face->extra.data );
|
|
|
1035 |
}
|
|
|
1036 |
}
|
|
|
1037 |
}
|
|
|
1038 |
|
|
|
1039 |
|
|
|
1040 |
FT_LOCAL_DEF( FT_Error )
|
|
|
1041 |
cff_driver_init( FT_Module module )
|
|
|
1042 |
{
|
|
|
1043 |
FT_UNUSED( module );
|
|
|
1044 |
|
|
|
1045 |
return CFF_Err_Ok;
|
|
|
1046 |
}
|
|
|
1047 |
|
|
|
1048 |
|
|
|
1049 |
FT_LOCAL_DEF( void )
|
|
|
1050 |
cff_driver_done( FT_Module module )
|
|
|
1051 |
{
|
|
|
1052 |
FT_UNUSED( module );
|
|
|
1053 |
}
|
|
|
1054 |
|
|
|
1055 |
|
|
|
1056 |
/* END */
|