ref: c48bf37bda6445eaac9e869cf5adef76c74fc079
dir: /src/cid/cidobjs.c/
/***************************************************************************/
/* */
/* cidobjs.c */
/* */
/* CID objects manager (body). */
/* */
/* Copyright 1996-2001 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_DEBUG_H
#include FT_INTERNAL_STREAM_H
#include "cidgload.h"
#include "cidload.h"
#include FT_INTERNAL_POSTSCRIPT_NAMES_H
#include FT_INTERNAL_POSTSCRIPT_AUX_H
#include FT_INTERNAL_POSTSCRIPT_HINTS_H
#include "ciderrs.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_cidobjs
/*************************************************************************/
/* */
/* SLOT FUNCTIONS */
/* */
/*************************************************************************/
FT_LOCAL_DEF void
CID_GlyphSlot_Done( CID_GlyphSlot slot )
{
slot->root.internal->glyph_hints = 0;
}
FT_LOCAL_DEF FT_Error
CID_GlyphSlot_Init( CID_GlyphSlot slot )
{
CID_Face face;
PSHinter_Interface* pshinter;
face = (CID_Face) slot->root.face;
pshinter = face->pshinter;
if ( pshinter )
{
FT_Module module;
module = FT_Get_Module( slot->root.face->driver->root.library,
"pshinter" );
if ( module )
{
T1_Hints_Funcs funcs;
funcs = pshinter->get_t1_funcs( module );
slot->root.internal->glyph_hints = (void*)funcs;
}
}
return 0;
}
/*************************************************************************/
/* */
/* SIZE FUNCTIONS */
/* */
/*************************************************************************/
static PSH_Globals_Funcs
CID_Size_Get_Globals_Funcs( CID_Size size )
{
CID_Face face = (CID_Face)size->root.face;
PSHinter_Interface* pshinter = 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
CID_Size_Done( CID_Size size )
{
if ( size->root.internal )
{
PSH_Globals_Funcs funcs;
funcs = CID_Size_Get_Globals_Funcs( size );
if ( funcs )
funcs->destroy( (PSH_Globals)size->root.internal );
size->root.internal = 0;
}
}
FT_LOCAL_DEF FT_Error
CID_Size_Init( CID_Size size )
{
FT_Error error = 0;
PSH_Globals_Funcs funcs = CID_Size_Get_Globals_Funcs( size );
if ( funcs )
{
PSH_Globals globals;
CID_Face face = (CID_Face)size->root.face;
CID_FontDict* dict = face->cid.font_dicts + face->root.face_index;
T1_Private* priv = &dict->private_dict;
error = funcs->create( size->root.face->memory, priv, &globals );
if ( !error )
size->root.internal = (FT_Size_Internal)(void*)globals;
}
return error;
}
FT_LOCAL_DEF FT_Error
CID_Size_Reset( CID_Size size )
{
PSH_Globals_Funcs funcs = CID_Size_Get_Globals_Funcs( size );
FT_Error error = 0;
if ( funcs )
error = funcs->set_scale( (PSH_Globals)size->root.internal,
size->root.metrics.x_scale,
size->root.metrics.y_scale,
0, 0 );
return error;
}
/*************************************************************************/
/* */
/* FACE FUNCTIONS */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* <Function> */
/* CID_Face_Done */
/* */
/* <Description> */
/* Finalizes a given face object. */
/* */
/* <Input> */
/* face :: A pointer to the face object to destroy. */
/* */
FT_LOCAL_DEF void
CID_Face_Done( CID_Face face )
{
FT_Memory memory;
if ( face )
{
CID_Info* cid = &face->cid;
T1_FontInfo* info = &cid->font_info;
memory = face->root.memory;
/* release subrs */
if ( face->subrs )
{
FT_Int n;
for ( n = 0; n < cid->num_dicts; n++ )
{
CID_Subrs* subr = face->subrs + n;
if ( subr->code )
{
FREE( subr->code[0] );
FREE( subr->code );
}
}
FREE( face->subrs );
}
/* release FontInfo strings */
FREE( info->version );
FREE( info->notice );
FREE( info->full_name );
FREE( info->family_name );
FREE( info->weight );
/* release font dictionaries */
FREE( cid->font_dicts );
cid->num_dicts = 0;
/* release other strings */
FREE( cid->cid_font_name );
FREE( cid->registry );
FREE( cid->ordering );
face->root.family_name = 0;
face->root.style_name = 0;
}
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Face_Init */
/* */
/* <Description> */
/* Initializes a given CID face object. */
/* */
/* <Input> */
/* stream :: The source font stream. */
/* */
/* 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 newly built face object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
FT_LOCAL_DEF FT_Error
CID_Face_Init( FT_Stream stream,
CID_Face face,
FT_Int face_index,
FT_Int num_params,
FT_Parameter* params )
{
FT_Error error;
PSNames_Interface* psnames;
PSAux_Interface* psaux;
PSHinter_Interface* pshinter;
FT_UNUSED( num_params );
FT_UNUSED( params );
FT_UNUSED( face_index );
FT_UNUSED( stream );
face->root.num_faces = 1;
psnames = (PSNames_Interface*)face->psnames;
if ( !psnames )
{
psnames = (PSNames_Interface*)FT_Get_Module_Interface(
FT_FACE_LIBRARY( face ), "psnames" );
face->psnames = psnames;
}
psaux = (PSAux_Interface*)face->psaux;
if ( !psaux )
{
psaux = (PSAux_Interface*)FT_Get_Module_Interface(
FT_FACE_LIBRARY( face ), "psaux" );
face->psaux = psaux;
}
pshinter = (PSHinter_Interface*)face->pshinter;
if ( !pshinter )
{
pshinter = (PSHinter_Interface*)FT_Get_Module_Interface(
FT_FACE_LIBRARY( face ), "pshinter" );
face->pshinter = pshinter;
}
/* open the tokenizer; this will also check the font format */
if ( FILE_Seek( 0 ) )
goto Exit;
error = CID_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 != 0 )
{
FT_ERROR(( "CID_Face_Init: invalid face index\n" ));
error = CID_Err_Invalid_Argument;
goto Exit;
}
/* Now, load the font program into the face object */
{
/* Init the face object fields */
/* Now set up root face fields */
{
FT_Face root = (FT_Face)&face->root;
root->num_glyphs = face->cid.cid_count;
root->num_charmaps = 0;
root->face_index = face_index;
root->face_flags = FT_FACE_FLAG_SCALABLE;
root->face_flags |= FT_FACE_FLAG_HORIZONTAL;
if ( face->cid.font_info.is_fixed_pitch )
root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
/* XXX: TODO: add kerning with .afm support */
/* get style name -- be careful, some broken fonts only */
/* have a /FontName dictionary entry! */
root->family_name = face->cid.font_info.family_name;
if ( root->family_name )
{
char* full = face->cid.font_info.full_name;
char* family = root->family_name;
while ( *family && *full == *family )
{
family++;
full++;
}
root->style_name = ( *full == ' ' ) ? full + 1
: (char *)"Regular";
}
else
{
/* do we have a `/FontName'? */
if ( face->cid.cid_font_name )
{
root->family_name = face->cid.cid_font_name;
root->style_name = (char *)"Regular";
}
}
/* no embedded bitmap support */
root->num_fixed_sizes = 0;
root->available_sizes = 0;
root->bbox = face->cid.font_bbox;
if ( !root->units_per_EM )
root->units_per_EM = 1000;
root->ascender = (FT_Short)( face->cid.font_bbox.yMax >> 16 );
root->descender = (FT_Short)( face->cid.font_bbox.yMin >> 16 );
root->height = (FT_Short)(
( ( root->ascender + root->descender ) * 12 ) / 10 );
#if 0
/* now compute the maximum advance width */
root->max_advance_width = face->type1.private_dict.standard_width[0];
/* compute max advance width for proportional fonts */
if ( !face->type1.font_info.is_fixed_pitch )
{
FT_Int max_advance;
error = CID_Compute_Max_Advance( face, &max_advance );
/* in case of error, keep the standard width */
if ( !error )
root->max_advance_width = max_advance;
else
error = 0; /* clear error */
}
root->max_advance_height = root->height;
#endif /* 0 */
root->underline_position = face->cid.font_info.underline_position;
root->underline_thickness = face->cid.font_info.underline_thickness;
root->internal->max_points = 0;
root->internal->max_contours = 0;
}
}
#if 0
/* charmap support - synthetize unicode charmap when possible */
{
FT_Face root = &face->root;
FT_CharMap charmap = face->charmaprecs;
/* synthesize a Unicode charmap if there is support in the `psnames' */
/* module */
if ( face->psnames )
{
PSNames_Interface* psnames = (PSNames_Interface*)face->psnames;
if ( psnames->unicode_value )
{
error = psnames->build_unicodes(
root->memory,
face->type1.num_glyphs,
(const char**)face->type1.glyph_names,
&face->unicode_map );
if ( !error )
{
root->charmap = charmap;
charmap->face = (FT_Face)face;
charmap->encoding = ft_encoding_unicode;
charmap->platform_id = 3;
charmap->encoding_id = 1;
charmap++;
}
/* simply clear the error in case of failure (which really */
/* means that out of memory or no unicode glyph names) */
error = 0;
}
}
/* now, support either the standard, expert, or custom encodings */
charmap->face = (FT_Face)face;
charmap->platform_id = 7; /* a new platform id for Adobe fonts? */
switch ( face->type1.encoding_type )
{
case t1_encoding_standard:
charmap->encoding = ft_encoding_adobe_standard;
charmap->encoding_id = 0;
break;
case t1_encoding_expert:
charmap->encoding = ft_encoding_adobe_expert;
charmap->encoding_id = 1;
break;
default:
charmap->encoding = ft_encoding_adobe_custom;
charmap->encoding_id = 2;
break;
}
root->charmaps = face->charmaps;
root->num_charmaps = charmap - face->charmaprecs + 1;
face->charmaps[0] = &face->charmaprecs[0];
face->charmaps[1] = &face->charmaprecs[1];
}
#endif /* 0 */
Exit:
return error;
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Driver_Init */
/* */
/* <Description> */
/* Initializes a given CID driver object. */
/* */
/* <Input> */
/* driver :: A handle to the target driver object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
FT_LOCAL_DEF FT_Error
CID_Driver_Init( CID_Driver driver )
{
FT_UNUSED( driver );
return CID_Err_Ok;
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Driver_Done */
/* */
/* <Description> */
/* Finalizes a given CID driver. */
/* */
/* <Input> */
/* driver :: A handle to the target CID driver. */
/* */
FT_LOCAL_DEF void
CID_Driver_Done( CID_Driver driver )
{
FT_UNUSED( driver );
}
/* END */