493 lines
16 KiB
C
493 lines
16 KiB
C
/***************************************************************************/
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/* */
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/* cidobjs.c */
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/* */
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/* CID objects manager (body). */
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/* */
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/* Copyright 1996-2017 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 FT_INTERNAL_DEBUG_H
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#include FT_INTERNAL_STREAM_H
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#include "cidgload.h"
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#include "cidload.h"
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#include FT_SERVICE_POSTSCRIPT_CMAPS_H
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#include FT_INTERNAL_POSTSCRIPT_AUX_H
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#include FT_INTERNAL_POSTSCRIPT_HINTS_H
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#include "ciderrs.h"
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/*************************************************************************/
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/* */
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/* 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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/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_cidobjs
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/*************************************************************************/
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/* */
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/* SLOT FUNCTIONS */
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/* */
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/*************************************************************************/
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FT_LOCAL_DEF( void )
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cid_slot_done( FT_GlyphSlot slot )
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{
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slot->internal->glyph_hints = NULL;
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}
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FT_LOCAL_DEF( FT_Error )
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cid_slot_init( FT_GlyphSlot slot )
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{
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CID_Face face;
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PSHinter_Service pshinter;
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face = (CID_Face)slot->face;
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pshinter = (PSHinter_Service)face->pshinter;
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if ( pshinter )
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{
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FT_Module module;
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module = FT_Get_Module( slot->face->driver->root.library,
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"pshinter" );
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if ( module )
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{
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T1_Hints_Funcs funcs;
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funcs = pshinter->get_t1_funcs( module );
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slot->internal->glyph_hints = (void*)funcs;
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}
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}
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return 0;
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}
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/*************************************************************************/
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/* */
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/* SIZE FUNCTIONS */
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/* */
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/*************************************************************************/
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static PSH_Globals_Funcs
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cid_size_get_globals_funcs( CID_Size size )
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{
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CID_Face face = (CID_Face)size->root.face;
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PSHinter_Service pshinter = (PSHinter_Service)face->pshinter;
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FT_Module module;
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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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FT_LOCAL_DEF( void )
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cid_size_done( FT_Size cidsize ) /* CID_Size */
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{
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CID_Size size = (CID_Size)cidsize;
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if ( cidsize->internal )
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{
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PSH_Globals_Funcs funcs;
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funcs = cid_size_get_globals_funcs( size );
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if ( funcs )
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funcs->destroy( (PSH_Globals)cidsize->internal );
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cidsize->internal = NULL;
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}
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}
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FT_LOCAL_DEF( FT_Error )
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cid_size_init( FT_Size cidsize ) /* CID_Size */
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{
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CID_Size size = (CID_Size)cidsize;
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FT_Error error = FT_Err_Ok;
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PSH_Globals_Funcs funcs = cid_size_get_globals_funcs( size );
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if ( funcs )
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{
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PSH_Globals globals;
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CID_Face face = (CID_Face)cidsize->face;
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CID_FaceDict dict = face->cid.font_dicts + face->root.face_index;
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PS_Private priv = &dict->private_dict;
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error = funcs->create( cidsize->face->memory, priv, &globals );
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if ( !error )
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cidsize->internal = (FT_Size_Internal)(void*)globals;
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}
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return error;
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}
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FT_LOCAL( FT_Error )
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cid_size_request( FT_Size size,
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FT_Size_Request req )
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{
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PSH_Globals_Funcs funcs;
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FT_Request_Metrics( size->face, req );
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funcs = cid_size_get_globals_funcs( (CID_Size)size );
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if ( funcs )
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funcs->set_scale( (PSH_Globals)size->internal,
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size->metrics.x_scale,
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size->metrics.y_scale,
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0, 0 );
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return FT_Err_Ok;
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}
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/*************************************************************************/
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/* */
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/* FACE FUNCTIONS */
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/* */
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Function> */
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/* cid_face_done */
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/* */
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/* <Description> */
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/* Finalizes a given face object. */
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/* */
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/* <Input> */
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/* face :: A pointer to the face object to destroy. */
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/* */
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FT_LOCAL_DEF( void )
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cid_face_done( FT_Face cidface ) /* CID_Face */
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{
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CID_Face face = (CID_Face)cidface;
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FT_Memory memory;
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CID_FaceInfo cid;
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PS_FontInfo info;
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if ( !face )
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return;
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cid = &face->cid;
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info = &cid->font_info;
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memory = cidface->memory;
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/* release subrs */
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if ( face->subrs )
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{
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FT_Int n;
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for ( n = 0; n < cid->num_dicts; n++ )
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{
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CID_Subrs subr = face->subrs + n;
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if ( subr->code )
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{
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FT_FREE( subr->code[0] );
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FT_FREE( subr->code );
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}
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}
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FT_FREE( face->subrs );
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}
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/* release FontInfo strings */
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FT_FREE( info->version );
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FT_FREE( info->notice );
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FT_FREE( info->full_name );
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FT_FREE( info->family_name );
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FT_FREE( info->weight );
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/* release font dictionaries */
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FT_FREE( cid->font_dicts );
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cid->num_dicts = 0;
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/* release other strings */
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FT_FREE( cid->cid_font_name );
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FT_FREE( cid->registry );
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FT_FREE( cid->ordering );
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cidface->family_name = NULL;
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cidface->style_name = NULL;
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FT_FREE( face->binary_data );
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FT_FREE( face->cid_stream );
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* cid_face_init */
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/* */
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/* <Description> */
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/* Initializes a given CID face object. */
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/* */
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/* <Input> */
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/* stream :: The source font stream. */
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/* */
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/* face_index :: The index of the font face in the resource. */
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/* */
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/* num_params :: Number of additional generic parameters. Ignored. */
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/* */
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/* params :: Additional generic parameters. Ignored. */
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/* */
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/* <InOut> */
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/* face :: The newly built face object. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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FT_LOCAL_DEF( FT_Error )
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cid_face_init( FT_Stream stream,
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FT_Face cidface, /* CID_Face */
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FT_Int face_index,
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FT_Int num_params,
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FT_Parameter* params )
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{
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CID_Face face = (CID_Face)cidface;
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FT_Error error;
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PSAux_Service psaux;
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PSHinter_Service pshinter;
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FT_UNUSED( num_params );
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FT_UNUSED( params );
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FT_UNUSED( stream );
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cidface->num_faces = 1;
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psaux = (PSAux_Service)face->psaux;
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if ( !psaux )
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{
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psaux = (PSAux_Service)FT_Get_Module_Interface(
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FT_FACE_LIBRARY( face ), "psaux" );
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if ( !psaux )
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{
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FT_ERROR(( "cid_face_init: cannot access `psaux' module\n" ));
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error = FT_THROW( Missing_Module );
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goto Exit;
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}
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face->psaux = psaux;
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}
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pshinter = (PSHinter_Service)face->pshinter;
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if ( !pshinter )
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{
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pshinter = (PSHinter_Service)FT_Get_Module_Interface(
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FT_FACE_LIBRARY( face ), "pshinter" );
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face->pshinter = pshinter;
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}
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FT_TRACE2(( "CID driver\n" ));
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/* open the tokenizer; this will also check the font format */
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if ( FT_STREAM_SEEK( 0 ) )
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goto Exit;
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error = cid_face_open( face, face_index );
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if ( error )
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goto Exit;
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/* if we just wanted to check the format, leave successfully now */
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if ( face_index < 0 )
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goto Exit;
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/* check the face index */
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/* XXX: handle CID fonts with more than a single face */
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if ( ( face_index & 0xFFFF ) != 0 )
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{
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FT_ERROR(( "cid_face_init: invalid face index\n" ));
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error = FT_THROW( Invalid_Argument );
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goto Exit;
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}
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/* now load the font program into the face object */
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/* initialize the face object fields */
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/* set up root face fields */
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{
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CID_FaceInfo cid = &face->cid;
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PS_FontInfo info = &cid->font_info;
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cidface->num_glyphs = (FT_Long)cid->cid_count;
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cidface->num_charmaps = 0;
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cidface->face_index = face_index & 0xFFFF;
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cidface->face_flags |= FT_FACE_FLAG_SCALABLE | /* scalable outlines */
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FT_FACE_FLAG_HORIZONTAL | /* horizontal data */
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FT_FACE_FLAG_HINTER; /* has native hinter */
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if ( info->is_fixed_pitch )
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cidface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
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/* XXX: TODO: add kerning with .afm support */
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/* get style name -- be careful, some broken fonts only */
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/* have a /FontName dictionary entry! */
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cidface->family_name = info->family_name;
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/* assume "Regular" style if we don't know better */
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cidface->style_name = (char *)"Regular";
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if ( cidface->family_name )
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{
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char* full = info->full_name;
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char* family = cidface->family_name;
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if ( full )
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{
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while ( *full )
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{
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if ( *full == *family )
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{
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family++;
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full++;
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}
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else
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{
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if ( *full == ' ' || *full == '-' )
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full++;
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else if ( *family == ' ' || *family == '-' )
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family++;
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else
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{
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if ( !*family )
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cidface->style_name = full;
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break;
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}
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}
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}
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}
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}
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else
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{
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/* do we have a `/FontName'? */
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if ( cid->cid_font_name )
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cidface->family_name = cid->cid_font_name;
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}
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/* compute style flags */
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cidface->style_flags = 0;
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if ( info->italic_angle )
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cidface->style_flags |= FT_STYLE_FLAG_ITALIC;
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if ( info->weight )
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{
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if ( !ft_strcmp( info->weight, "Bold" ) ||
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!ft_strcmp( info->weight, "Black" ) )
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cidface->style_flags |= FT_STYLE_FLAG_BOLD;
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}
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/* no embedded bitmap support */
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cidface->num_fixed_sizes = 0;
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cidface->available_sizes = NULL;
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cidface->bbox.xMin = cid->font_bbox.xMin >> 16;
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cidface->bbox.yMin = cid->font_bbox.yMin >> 16;
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/* no `U' suffix here to 0xFFFF! */
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cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFF ) >> 16;
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cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFF ) >> 16;
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if ( !cidface->units_per_EM )
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cidface->units_per_EM = 1000;
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cidface->ascender = (FT_Short)( cidface->bbox.yMax );
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cidface->descender = (FT_Short)( cidface->bbox.yMin );
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cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 );
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if ( cidface->height < cidface->ascender - cidface->descender )
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cidface->height = (FT_Short)( cidface->ascender - cidface->descender );
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cidface->underline_position = (FT_Short)info->underline_position;
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cidface->underline_thickness = (FT_Short)info->underline_thickness;
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}
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Exit:
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return error;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* cid_driver_init */
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/* */
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/* <Description> */
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/* Initializes a given CID driver object. */
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/* */
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/* <Input> */
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/* driver :: A handle to the target driver object. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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FT_LOCAL_DEF( FT_Error )
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cid_driver_init( FT_Module driver )
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{
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FT_UNUSED( driver );
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return FT_Err_Ok;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* cid_driver_done */
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/* */
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/* <Description> */
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/* Finalizes a given CID driver. */
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/* */
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/* <Input> */
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/* driver :: A handle to the target CID driver. */
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/* */
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FT_LOCAL_DEF( void )
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cid_driver_done( FT_Module driver )
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{
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FT_UNUSED( driver );
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}
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/* END */
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