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|
/***************************************************************************/
/* */
/* cidobjs.c */
/* */
/* CID objects manager (body). */
/* */
/* Copyright 1996-2006, 2008, 2010-2011, 2013 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_SERVICE_POSTSCRIPT_CMAPS_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_slot_done( FT_GlyphSlot slot )
{
slot->internal->glyph_hints = 0;
}
FT_LOCAL_DEF( FT_Error )
cid_slot_init( FT_GlyphSlot slot )
{
CID_Face face;
PSHinter_Service pshinter;
face = (CID_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;
}
/*************************************************************************/
/* */
/* SIZE FUNCTIONS */
/* */
/*************************************************************************/
static PSH_Globals_Funcs
cid_size_get_globals_funcs( CID_Size size )
{
CID_Face face = (CID_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 )
cid_size_done( FT_Size cidsize ) /* CID_Size */
{
CID_Size size = (CID_Size)cidsize;
if ( cidsize->internal )
{
PSH_Globals_Funcs funcs;
funcs = cid_size_get_globals_funcs( size );
if ( funcs )
funcs->destroy( (PSH_Globals)cidsize->internal );
cidsize->internal = 0;
}
}
FT_LOCAL_DEF( FT_Error )
cid_size_init( FT_Size cidsize ) /* CID_Size */
{
CID_Size size = (CID_Size)cidsize;
FT_Error error = FT_Err_Ok;
PSH_Globals_Funcs funcs = cid_size_get_globals_funcs( size );
if ( funcs )
{
PSH_Globals globals;
CID_Face face = (CID_Face)cidsize->face;
CID_FaceDict dict = face->cid.font_dicts + face->root.face_index;
PS_Private priv = &dict->private_dict;
error = funcs->create( cidsize->face->memory, priv, &globals );
if ( !error )
cidsize->internal = (FT_Size_Internal)(void*)globals;
}
return error;
}
FT_LOCAL( FT_Error )
cid_size_request( FT_Size size,
FT_Size_Request req )
{
PSH_Globals_Funcs funcs;
FT_Request_Metrics( size->face, req );
funcs = cid_size_get_globals_funcs( (CID_Size)size );
if ( funcs )
funcs->set_scale( (PSH_Globals)size->internal,
size->metrics.x_scale,
size->metrics.y_scale,
0, 0 );
return FT_Err_Ok;
}
/*************************************************************************/
/* */
/* 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( FT_Face cidface ) /* CID_Face */
{
CID_Face face = (CID_Face)cidface;
FT_Memory memory;
CID_FaceInfo cid;
PS_FontInfo info;
if ( !face )
return;
cid = &face->cid;
info = &cid->font_info;
memory = cidface->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 )
{
FT_FREE( subr->code[0] );
FT_FREE( subr->code );
}
}
FT_FREE( face->subrs );
}
/* release FontInfo strings */
FT_FREE( info->version );
FT_FREE( info->notice );
FT_FREE( info->full_name );
FT_FREE( info->family_name );
FT_FREE( info->weight );
/* release font dictionaries */
FT_FREE( cid->font_dicts );
cid->num_dicts = 0;
/* release other strings */
FT_FREE( cid->cid_font_name );
FT_FREE( cid->registry );
FT_FREE( cid->ordering );
cidface->family_name = 0;
cidface->style_name = 0;
FT_FREE( face->binary_data );
FT_FREE( face->cid_stream );
}
/*************************************************************************/
/* */
/* <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,
FT_Face cidface, /* CID_Face */
FT_Int face_index,
FT_Int num_params,
FT_Parameter* params )
{
CID_Face face = (CID_Face)cidface;
FT_Error error;
PSAux_Service psaux;
PSHinter_Service pshinter;
FT_UNUSED( num_params );
FT_UNUSED( params );
FT_UNUSED( stream );
cidface->num_faces = 1;
psaux = (PSAux_Service)face->psaux;
if ( !psaux )
{
psaux = (PSAux_Service)FT_Get_Module_Interface(
FT_FACE_LIBRARY( face ), "psaux" );
if ( !psaux )
{
FT_ERROR(( "cid_face_init: cannot access `psaux' module\n" ));
error = FT_THROW( Missing_Module );
goto Exit;
}
face->psaux = psaux;
}
pshinter = (PSHinter_Service)face->pshinter;
if ( !pshinter )
{
pshinter = (PSHinter_Service)FT_Get_Module_Interface(
FT_FACE_LIBRARY( face ), "pshinter" );
face->pshinter = pshinter;
}
FT_TRACE2(( "CID driver\n" ));
/* open the tokenizer; this will also check the font format */
if ( FT_STREAM_SEEK( 0 ) )
goto Exit;
error = cid_face_open( face, face_index );
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 */
/* XXX: handle CID fonts with more than a single face */
if ( face_index != 0 )
{
FT_ERROR(( "cid_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 */
{
CID_FaceInfo cid = &face->cid;
PS_FontInfo info = &cid->font_info;
cidface->num_glyphs = cid->cid_count;
cidface->num_charmaps = 0;
cidface->face_index = face_index;
cidface->face_flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */
FT_FACE_FLAG_HORIZONTAL | /* horizontal data */
FT_FACE_FLAG_HINTER; /* has native hinter */
if ( info->is_fixed_pitch )
cidface->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! */
cidface->family_name = info->family_name;
/* assume "Regular" style if we don't know better */
cidface->style_name = (char *)"Regular";
if ( cidface->family_name )
{
char* full = info->full_name;
char* family = cidface->family_name;
if ( full )
{
while ( *full )
{
if ( *full == *family )
{
family++;
full++;
}
else
{
if ( *full == ' ' || *full == '-' )
full++;
else if ( *family == ' ' || *family == '-' )
family++;
else
{
if ( !*family )
cidface->style_name = full;
break;
}
}
}
}
}
else
{
/* do we have a `/FontName'? */
if ( cid->cid_font_name )
cidface->family_name = cid->cid_font_name;
}
/* compute style flags */
cidface->style_flags = 0;
if ( info->italic_angle )
cidface->style_flags |= FT_STYLE_FLAG_ITALIC;
if ( info->weight )
{
if ( !ft_strcmp( info->weight, "Bold" ) ||
!ft_strcmp( info->weight, "Black" ) )
cidface->style_flags |= FT_STYLE_FLAG_BOLD;
}
/* no embedded bitmap support */
cidface->num_fixed_sizes = 0;
cidface->available_sizes = 0;
cidface->bbox.xMin = cid->font_bbox.xMin >> 16;
cidface->bbox.yMin = cid->font_bbox.yMin >> 16;
/* no `U' suffix here to 0xFFFF! */
cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFF ) >> 16;
cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFF ) >> 16;
if ( !cidface->units_per_EM )
cidface->units_per_EM = 1000;
cidface->ascender = (FT_Short)( cidface->bbox.yMax );
cidface->descender = (FT_Short)( cidface->bbox.yMin );
cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 );
if ( cidface->height < cidface->ascender - cidface->descender )
cidface->height = (FT_Short)( cidface->ascender - cidface->descender );
cidface->underline_position = (FT_Short)info->underline_position;
cidface->underline_thickness = (FT_Short)info->underline_thickness;
}
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( FT_Module driver )
{
FT_UNUSED( driver );
return FT_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( FT_Module driver )
{
FT_UNUSED( driver );
}
/* END */
|
