/***************************************************************************/ | |
/* */ | |
/* t1objs.c */ | |
/* */ | |
/* Type 1 objects manager (body). */ | |
/* */ | |
/* Copyright 1996-2015 by */ | |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
/* */ | |
/* This file is part of the FreeType project, and may only be used, */ | |
/* modified, and distributed under the terms of the FreeType project */ | |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
/* this file you indicate that you have read the license and */ | |
/* understand and accept it fully. */ | |
/* */ | |
/***************************************************************************/ | |
#include <ft2build.h> | |
#include FT_INTERNAL_CALC_H | |
#include FT_INTERNAL_DEBUG_H | |
#include FT_INTERNAL_STREAM_H | |
#include FT_TRUETYPE_IDS_H | |
#include "t1gload.h" | |
#include "t1load.h" | |
#include "t1errors.h" | |
#ifndef T1_CONFIG_OPTION_NO_AFM | |
#include "t1afm.h" | |
#endif | |
#include FT_SERVICE_POSTSCRIPT_CMAPS_H | |
#include FT_INTERNAL_POSTSCRIPT_AUX_H | |
/*************************************************************************/ | |
/* */ | |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */ | |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ | |
/* messages during execution. */ | |
/* */ | |
#undef FT_COMPONENT | |
#define FT_COMPONENT trace_t1objs | |
/*************************************************************************/ | |
/* */ | |
/* SIZE FUNCTIONS */ | |
/* */ | |
/* note that we store the global hints in the size's "internal" root */ | |
/* field */ | |
/* */ | |
/*************************************************************************/ | |
static PSH_Globals_Funcs | |
T1_Size_Get_Globals_Funcs( T1_Size size ) | |
{ | |
T1_Face face = (T1_Face)size->root.face; | |
PSHinter_Service pshinter = (PSHinter_Service)face->pshinter; | |
FT_Module module; | |
module = FT_Get_Module( size->root.face->driver->root.library, | |
"pshinter" ); | |
return ( module && pshinter && pshinter->get_globals_funcs ) | |
? pshinter->get_globals_funcs( module ) | |
: 0 ; | |
} | |
FT_LOCAL_DEF( void ) | |
T1_Size_Done( FT_Size t1size ) /* T1_Size */ | |
{ | |
T1_Size size = (T1_Size)t1size; | |
if ( size->root.internal ) | |
{ | |
PSH_Globals_Funcs funcs; | |
funcs = T1_Size_Get_Globals_Funcs( size ); | |
if ( funcs ) | |
funcs->destroy( (PSH_Globals)size->root.internal ); | |
size->root.internal = NULL; | |
} | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
T1_Size_Init( FT_Size t1size ) /* T1_Size */ | |
{ | |
T1_Size size = (T1_Size)t1size; | |
FT_Error error = FT_Err_Ok; | |
PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size ); | |
if ( funcs ) | |
{ | |
PSH_Globals globals; | |
T1_Face face = (T1_Face)size->root.face; | |
error = funcs->create( size->root.face->memory, | |
&face->type1.private_dict, &globals ); | |
if ( !error ) | |
size->root.internal = (FT_Size_Internal)(void*)globals; | |
} | |
return error; | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
T1_Size_Request( FT_Size t1size, /* T1_Size */ | |
FT_Size_Request req ) | |
{ | |
T1_Size size = (T1_Size)t1size; | |
PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size ); | |
FT_Request_Metrics( size->root.face, req ); | |
if ( funcs ) | |
funcs->set_scale( (PSH_Globals)size->root.internal, | |
size->root.metrics.x_scale, | |
size->root.metrics.y_scale, | |
0, 0 ); | |
return FT_Err_Ok; | |
} | |
/*************************************************************************/ | |
/* */ | |
/* SLOT FUNCTIONS */ | |
/* */ | |
/*************************************************************************/ | |
FT_LOCAL_DEF( void ) | |
T1_GlyphSlot_Done( FT_GlyphSlot slot ) | |
{ | |
slot->internal->glyph_hints = NULL; | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
T1_GlyphSlot_Init( FT_GlyphSlot slot ) | |
{ | |
T1_Face face; | |
PSHinter_Service pshinter; | |
face = (T1_Face)slot->face; | |
pshinter = (PSHinter_Service)face->pshinter; | |
if ( pshinter ) | |
{ | |
FT_Module module; | |
module = FT_Get_Module( slot->face->driver->root.library, | |
"pshinter" ); | |
if ( module ) | |
{ | |
T1_Hints_Funcs funcs; | |
funcs = pshinter->get_t1_funcs( module ); | |
slot->internal->glyph_hints = (void*)funcs; | |
} | |
} | |
return 0; | |
} | |
/*************************************************************************/ | |
/* */ | |
/* FACE FUNCTIONS */ | |
/* */ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* T1_Face_Done */ | |
/* */ | |
/* <Description> */ | |
/* The face object destructor. */ | |
/* */ | |
/* <Input> */ | |
/* face :: A typeless pointer to the face object to destroy. */ | |
/* */ | |
FT_LOCAL_DEF( void ) | |
T1_Face_Done( FT_Face t1face ) /* T1_Face */ | |
{ | |
T1_Face face = (T1_Face)t1face; | |
FT_Memory memory; | |
T1_Font type1; | |
if ( !face ) | |
return; | |
memory = face->root.memory; | |
type1 = &face->type1; | |
#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT | |
/* release multiple masters information */ | |
FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) ); | |
if ( face->buildchar ) | |
{ | |
FT_FREE( face->buildchar ); | |
face->buildchar = NULL; | |
face->len_buildchar = 0; | |
} | |
T1_Done_Blend( face ); | |
face->blend = NULL; | |
#endif | |
/* release font info strings */ | |
{ | |
PS_FontInfo info = &type1->font_info; | |
FT_FREE( info->version ); | |
FT_FREE( info->notice ); | |
FT_FREE( info->full_name ); | |
FT_FREE( info->family_name ); | |
FT_FREE( info->weight ); | |
} | |
/* release top dictionary */ | |
FT_FREE( type1->charstrings_len ); | |
FT_FREE( type1->charstrings ); | |
FT_FREE( type1->glyph_names ); | |
FT_FREE( type1->subrs ); | |
FT_FREE( type1->subrs_len ); | |
FT_FREE( type1->subrs_block ); | |
FT_FREE( type1->charstrings_block ); | |
FT_FREE( type1->glyph_names_block ); | |
FT_FREE( type1->encoding.char_index ); | |
FT_FREE( type1->encoding.char_name ); | |
FT_FREE( type1->font_name ); | |
#ifndef T1_CONFIG_OPTION_NO_AFM | |
/* release afm data if present */ | |
if ( face->afm_data ) | |
T1_Done_Metrics( memory, (AFM_FontInfo)face->afm_data ); | |
#endif | |
/* release unicode map, if any */ | |
#if 0 | |
FT_FREE( face->unicode_map_rec.maps ); | |
face->unicode_map_rec.num_maps = 0; | |
face->unicode_map = NULL; | |
#endif | |
face->root.family_name = NULL; | |
face->root.style_name = NULL; | |
} | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* T1_Face_Init */ | |
/* */ | |
/* <Description> */ | |
/* The face object constructor. */ | |
/* */ | |
/* <Input> */ | |
/* stream :: input stream where to load font data. */ | |
/* */ | |
/* face_index :: The index of the font face in the resource. */ | |
/* */ | |
/* num_params :: Number of additional generic parameters. Ignored. */ | |
/* */ | |
/* params :: Additional generic parameters. Ignored. */ | |
/* */ | |
/* <InOut> */ | |
/* face :: The face record to build. */ | |
/* */ | |
/* <Return> */ | |
/* FreeType error code. 0 means success. */ | |
/* */ | |
FT_LOCAL_DEF( FT_Error ) | |
T1_Face_Init( FT_Stream stream, | |
FT_Face t1face, /* T1_Face */ | |
FT_Int face_index, | |
FT_Int num_params, | |
FT_Parameter* params ) | |
{ | |
T1_Face face = (T1_Face)t1face; | |
FT_Error error; | |
FT_Service_PsCMaps psnames; | |
PSAux_Service psaux; | |
T1_Font type1 = &face->type1; | |
PS_FontInfo info = &type1->font_info; | |
FT_UNUSED( num_params ); | |
FT_UNUSED( params ); | |
FT_UNUSED( stream ); | |
face->root.num_faces = 1; | |
FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); | |
face->psnames = psnames; | |
face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), | |
"psaux" ); | |
psaux = (PSAux_Service)face->psaux; | |
if ( !psaux ) | |
{ | |
FT_ERROR(( "T1_Face_Init: cannot access `psaux' module\n" )); | |
error = FT_THROW( Missing_Module ); | |
goto Exit; | |
} | |
face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), | |
"pshinter" ); | |
FT_TRACE2(( "Type 1 driver\n" )); | |
/* open the tokenizer; this will also check the font format */ | |
error = T1_Open_Face( face ); | |
if ( error ) | |
goto Exit; | |
/* if we just wanted to check the format, leave successfully now */ | |
if ( face_index < 0 ) | |
goto Exit; | |
/* check the face index */ | |
if ( ( face_index & 0xFFFF ) > 0 ) | |
{ | |
FT_ERROR(( "T1_Face_Init: invalid face index\n" )); | |
error = FT_THROW( Invalid_Argument ); | |
goto Exit; | |
} | |
/* now load the font program into the face object */ | |
/* initialize the face object fields */ | |
/* set up root face fields */ | |
{ | |
FT_Face root = (FT_Face)&face->root; | |
root->num_glyphs = type1->num_glyphs; | |
root->face_index = 0; | |
root->face_flags |= FT_FACE_FLAG_SCALABLE | | |
FT_FACE_FLAG_HORIZONTAL | | |
FT_FACE_FLAG_GLYPH_NAMES | | |
FT_FACE_FLAG_HINTER; | |
if ( info->is_fixed_pitch ) | |
root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; | |
if ( face->blend ) | |
root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS; | |
/* The following code to extract the family and the style is very */ | |
/* simplistic and might get some things wrong. For a full-featured */ | |
/* algorithm you might have a look at the whitepaper given at */ | |
/* */ | |
/* http://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-model.aspx */ | |
/* get style name -- be careful, some broken fonts only */ | |
/* have a `/FontName' dictionary entry! */ | |
root->family_name = info->family_name; | |
root->style_name = NULL; | |
if ( root->family_name ) | |
{ | |
char* full = info->full_name; | |
char* family = root->family_name; | |
if ( full ) | |
{ | |
FT_Bool the_same = TRUE; | |
while ( *full ) | |
{ | |
if ( *full == *family ) | |
{ | |
family++; | |
full++; | |
} | |
else | |
{ | |
if ( *full == ' ' || *full == '-' ) | |
full++; | |
else if ( *family == ' ' || *family == '-' ) | |
family++; | |
else | |
{ | |
the_same = FALSE; | |
if ( !*family ) | |
root->style_name = full; | |
break; | |
} | |
} | |
} | |
if ( the_same ) | |
root->style_name = (char *)"Regular"; | |
} | |
} | |
else | |
{ | |
/* do we have a `/FontName'? */ | |
if ( type1->font_name ) | |
root->family_name = type1->font_name; | |
} | |
if ( !root->style_name ) | |
{ | |
if ( info->weight ) | |
root->style_name = info->weight; | |
else | |
/* assume `Regular' style because we don't know better */ | |
root->style_name = (char *)"Regular"; | |
} | |
/* compute style flags */ | |
root->style_flags = 0; | |
if ( info->italic_angle ) | |
root->style_flags |= FT_STYLE_FLAG_ITALIC; | |
if ( info->weight ) | |
{ | |
if ( !ft_strcmp( info->weight, "Bold" ) || | |
!ft_strcmp( info->weight, "Black" ) ) | |
root->style_flags |= FT_STYLE_FLAG_BOLD; | |
} | |
/* no embedded bitmap support */ | |
root->num_fixed_sizes = 0; | |
root->available_sizes = NULL; | |
root->bbox.xMin = type1->font_bbox.xMin >> 16; | |
root->bbox.yMin = type1->font_bbox.yMin >> 16; | |
/* no `U' suffix here to 0xFFFF! */ | |
root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFF ) >> 16; | |
root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFF ) >> 16; | |
/* Set units_per_EM if we didn't set it in t1_parse_font_matrix. */ | |
if ( !root->units_per_EM ) | |
root->units_per_EM = 1000; | |
root->ascender = (FT_Short)( root->bbox.yMax ); | |
root->descender = (FT_Short)( root->bbox.yMin ); | |
root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 ); | |
if ( root->height < root->ascender - root->descender ) | |
root->height = (FT_Short)( root->ascender - root->descender ); | |
/* now compute the maximum advance width */ | |
root->max_advance_width = | |
(FT_Short)( root->bbox.xMax ); | |
{ | |
FT_Pos max_advance; | |
error = T1_Compute_Max_Advance( face, &max_advance ); | |
/* in case of error, keep the standard width */ | |
if ( !error ) | |
root->max_advance_width = (FT_Short)FIXED_TO_INT( max_advance ); | |
else | |
error = FT_Err_Ok; /* clear error */ | |
} | |
root->max_advance_height = root->height; | |
root->underline_position = (FT_Short)info->underline_position; | |
root->underline_thickness = (FT_Short)info->underline_thickness; | |
} | |
{ | |
FT_Face root = &face->root; | |
if ( psnames ) | |
{ | |
FT_CharMapRec charmap; | |
T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes; | |
FT_CMap_Class clazz; | |
charmap.face = root; | |
/* first of all, try to synthesize a Unicode charmap */ | |
charmap.platform_id = TT_PLATFORM_MICROSOFT; | |
charmap.encoding_id = TT_MS_ID_UNICODE_CS; | |
charmap.encoding = FT_ENCODING_UNICODE; | |
error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL ); | |
if ( error && | |
FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) ) | |
goto Exit; | |
error = FT_Err_Ok; | |
/* now, generate an Adobe Standard encoding when appropriate */ | |
charmap.platform_id = TT_PLATFORM_ADOBE; | |
clazz = NULL; | |
switch ( type1->encoding_type ) | |
{ | |
case T1_ENCODING_TYPE_STANDARD: | |
charmap.encoding = FT_ENCODING_ADOBE_STANDARD; | |
charmap.encoding_id = TT_ADOBE_ID_STANDARD; | |
clazz = cmap_classes->standard; | |
break; | |
case T1_ENCODING_TYPE_EXPERT: | |
charmap.encoding = FT_ENCODING_ADOBE_EXPERT; | |
charmap.encoding_id = TT_ADOBE_ID_EXPERT; | |
clazz = cmap_classes->expert; | |
break; | |
case T1_ENCODING_TYPE_ARRAY: | |
charmap.encoding = FT_ENCODING_ADOBE_CUSTOM; | |
charmap.encoding_id = TT_ADOBE_ID_CUSTOM; | |
clazz = cmap_classes->custom; | |
break; | |
case T1_ENCODING_TYPE_ISOLATIN1: | |
charmap.encoding = FT_ENCODING_ADOBE_LATIN_1; | |
charmap.encoding_id = TT_ADOBE_ID_LATIN_1; | |
clazz = cmap_classes->unicode; | |
break; | |
default: | |
; | |
} | |
if ( clazz ) | |
error = FT_CMap_New( clazz, NULL, &charmap, NULL ); | |
#if 0 | |
/* Select default charmap */ | |
if (root->num_charmaps) | |
root->charmap = root->charmaps[0]; | |
#endif | |
} | |
} | |
Exit: | |
return error; | |
} | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* T1_Driver_Init */ | |
/* */ | |
/* <Description> */ | |
/* Initializes a given Type 1 driver object. */ | |
/* */ | |
/* <Input> */ | |
/* driver :: A handle to the target driver object. */ | |
/* */ | |
/* <Return> */ | |
/* FreeType error code. 0 means success. */ | |
/* */ | |
FT_LOCAL_DEF( FT_Error ) | |
T1_Driver_Init( FT_Module driver ) | |
{ | |
FT_UNUSED( driver ); | |
return FT_Err_Ok; | |
} | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* T1_Driver_Done */ | |
/* */ | |
/* <Description> */ | |
/* Finalizes a given Type 1 driver. */ | |
/* */ | |
/* <Input> */ | |
/* driver :: A handle to the target Type 1 driver. */ | |
/* */ | |
FT_LOCAL_DEF( void ) | |
T1_Driver_Done( FT_Module driver ) | |
{ | |
FT_UNUSED( driver ); | |
} | |
/* END */ |