6c71c6b968
src/base/ftobjs.c, src/base/ftutil.c, src/cff/cffobjs.c,
src/psaux/afmparse.c, src/sfnt/ttbdf.c, src/tools/apinames.c,
src/truetype/ttdriver.c:
solved compiler warnings as well as C++ compilation problems
790 lines
25 KiB
C
790 lines
25 KiB
C
/***************************************************************************/
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/* */
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/* cffobjs.c */
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/* */
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/* OpenType objects manager (body). */
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/* */
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/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006 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_CALC_H
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#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 FT_SERVICE_POSTSCRIPT_CMAPS_H
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#include FT_INTERNAL_POSTSCRIPT_HINTS_H
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#include "cffobjs.h"
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#include "cffload.h"
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#include "cffcmap.h"
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#include "cfferrs.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_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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static PSH_Globals_Funcs
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cff_size_get_globals_funcs( CFF_Size size )
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{
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CFF_Face face = (CFF_Face)size->root.face;
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CFF_Font font = (CFF_FontRec *)face->extra.data;
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PSHinter_Service pshinter = (PSHinter_Service)font->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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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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if ( cffsize->internal )
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{
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PSH_Globals_Funcs funcs;
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funcs = cff_size_get_globals_funcs( size );
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if ( funcs )
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funcs->destroy( (PSH_Globals)cffsize->internal );
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cffsize->internal = 0;
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}
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}
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FT_LOCAL_DEF( FT_Error )
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cff_size_init( FT_Size cffsize ) /* CFF_Size */
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{
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CFF_Size size = (CFF_Size)cffsize;
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FT_Error error = CFF_Err_Ok;
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PSH_Globals_Funcs funcs = cff_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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CFF_Face face = (CFF_Face)cffsize->face;
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CFF_Font font = (CFF_FontRec *)face->extra.data;
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CFF_SubFont subfont = &font->top_font;
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CFF_Private cpriv = &subfont->private_dict;
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PS_PrivateRec priv;
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/* IMPORTANT: The CFF and Type1 private dictionaries have */
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/* slightly different structures; we need to */
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/* synthetize a type1 dictionary on the fly here. */
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{
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FT_UInt n, count;
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FT_MEM_ZERO( &priv, sizeof ( priv ) );
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count = priv.num_blue_values = cpriv->num_blue_values;
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for ( n = 0; n < count; n++ )
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priv.blue_values[n] = (FT_Short)cpriv->blue_values[n];
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count = priv.num_other_blues = cpriv->num_other_blues;
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for ( n = 0; n < count; n++ )
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priv.other_blues[n] = (FT_Short)cpriv->other_blues[n];
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count = priv.num_family_blues = cpriv->num_family_blues;
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for ( n = 0; n < count; n++ )
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priv.family_blues[n] = (FT_Short)cpriv->family_blues[n];
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count = priv.num_family_other_blues = cpriv->num_family_other_blues;
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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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priv.blue_scale = cpriv->blue_scale;
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priv.blue_shift = (FT_Int)cpriv->blue_shift;
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priv.blue_fuzz = (FT_Int)cpriv->blue_fuzz;
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priv.standard_width[0] = (FT_UShort)cpriv->standard_width;
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priv.standard_height[0] = (FT_UShort)cpriv->standard_height;
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count = priv.num_snap_widths = cpriv->num_snap_widths;
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for ( n = 0; n < count; n++ )
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priv.snap_widths[n] = (FT_Short)cpriv->snap_widths[n];
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count = priv.num_snap_heights = cpriv->num_snap_heights;
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for ( n = 0; n < count; n++ )
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priv.snap_heights[n] = (FT_Short)cpriv->snap_heights[n];
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priv.force_bold = cpriv->force_bold;
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priv.language_group = cpriv->language_group;
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priv.lenIV = cpriv->lenIV;
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}
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error = funcs->create( cffsize->face->memory, &priv, &globals );
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if ( !error )
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cffsize->internal = (FT_Size_Internal)(void*)globals;
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}
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size->strike_index = 0xFFFFFFFFUL;
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return error;
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}
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#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
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FT_LOCAL_DEF( FT_Error )
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cff_size_select( FT_Size size,
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FT_ULong strike_index )
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{
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CFF_Size cffsize = (CFF_Size)size;
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PSH_Globals_Funcs funcs;
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cffsize->strike_index = strike_index;
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FT_Select_Metrics( size->face, strike_index );
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funcs = cff_size_get_globals_funcs( cffsize );
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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 CFF_Err_Ok;
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}
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#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
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FT_LOCAL_DEF( FT_Error )
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cff_size_request( FT_Size size,
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FT_Size_Request req )
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{
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CFF_Size cffsize = (CFF_Size)size;
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PSH_Globals_Funcs funcs;
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#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
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if ( FT_HAS_FIXED_SIZES( size->face ) )
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{
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CFF_Face cffface = (CFF_Face)size->face;
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SFNT_Service sfnt = (SFNT_Service)cffface->sfnt;
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FT_ULong index;
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if ( sfnt->set_sbit_strike( cffface, req, &index ) )
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cffsize->strike_index = 0xFFFFFFFFUL;
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else
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return cff_size_select( size, index );
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}
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#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
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FT_Request_Metrics( size->face, req );
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funcs = cff_size_get_globals_funcs( cffsize );
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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 CFF_Err_Ok;
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}
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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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cff_slot_done( FT_GlyphSlot slot )
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{
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slot->internal->glyph_hints = 0;
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}
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FT_LOCAL_DEF( FT_Error )
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cff_slot_init( FT_GlyphSlot slot )
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{
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CFF_Face face = (CFF_Face)slot->face;
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CFF_Font font = (CFF_FontRec *)face->extra.data;
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PSHinter_Service pshinter = (PSHinter_Service)font->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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T2_Hints_Funcs funcs;
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funcs = pshinter->get_t2_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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/* FACE FUNCTIONS */
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/* */
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/*************************************************************************/
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static FT_String*
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cff_strcpy( FT_Memory memory,
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const FT_String* source )
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{
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FT_Error error;
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FT_String* result = 0;
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FT_Int len = (FT_Int)ft_strlen( source );
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if ( !FT_ALLOC( result, len + 1 ) )
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{
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FT_MEM_COPY( result, source, len );
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result[len] = 0;
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}
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FT_UNUSED( error );
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return result;
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}
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FT_LOCAL_DEF( FT_Error )
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cff_face_init( FT_Stream stream,
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FT_Face cffface, /* CFF_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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CFF_Face face = (CFF_Face)cffface;
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FT_Error error;
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SFNT_Service sfnt;
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FT_Service_PsCMaps psnames;
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PSHinter_Service pshinter;
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FT_Bool pure_cff = 1;
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FT_Bool sfnt_format = 0;
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#if 0
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FT_FACE_FIND_GLOBAL_SERVICE( face, sfnt, SFNT );
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FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_NAMES );
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FT_FACE_FIND_GLOBAL_SERVICE( face, pshinter, POSTSCRIPT_HINTER );
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if ( !sfnt )
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goto Bad_Format;
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#else
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sfnt = (SFNT_Service)FT_Get_Module_Interface(
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cffface->driver->root.library, "sfnt" );
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if ( !sfnt )
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goto Bad_Format;
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FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
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pshinter = (PSHinter_Service)FT_Get_Module_Interface(
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cffface->driver->root.library, "pshinter" );
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#endif
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/* create input stream from resource */
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if ( FT_STREAM_SEEK( 0 ) )
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goto Exit;
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/* check whether we have a valid OpenType file */
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error = sfnt->init_face( stream, face, face_index, num_params, params );
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if ( !error )
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{
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if ( face->format_tag != 0x4F54544FL ) /* `OTTO'; OpenType/CFF font */
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{
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FT_TRACE2(( "[not a valid OpenType/CFF font]\n" ));
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goto Bad_Format;
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}
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/* if we are performing a simple font format check, exit immediately */
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if ( face_index < 0 )
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return CFF_Err_Ok;
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/* UNDOCUMENTED! A CFF in an SFNT can have only a single font. */
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if ( face_index > 0 )
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{
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FT_ERROR(( "cff_face_init: invalid face index\n" ));
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error = CFF_Err_Invalid_Argument;
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goto Exit;
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}
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sfnt_format = 1;
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/* now, the font can be either an OpenType/CFF font, or an SVG CEF */
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/* font; in the latter case it doesn't have a `head' table */
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error = face->goto_table( face, TTAG_head, stream, 0 );
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if ( !error )
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{
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pure_cff = 0;
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/* load font directory */
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error = sfnt->load_face( stream, face,
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face_index, num_params, params );
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if ( error )
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goto Exit;
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}
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else
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{
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/* load the `cmap' table explicitly */
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error = sfnt->load_cmap( face, stream );
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if ( error )
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goto Exit;
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/* XXX: we don't load the GPOS table, as OpenType Layout */
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/* support will be added later to a layout library on top of */
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/* FreeType 2 */
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}
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/* now load the CFF part of the file */
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error = face->goto_table( face, TTAG_CFF, stream, 0 );
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if ( error )
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goto Exit;
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}
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else
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{
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/* rewind to start of file; we are going to load a pure-CFF font */
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if ( FT_STREAM_SEEK( 0 ) )
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goto Exit;
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error = CFF_Err_Ok;
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}
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/* now load and parse the CFF table in the file */
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{
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CFF_Font cff;
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CFF_FontRecDict dict;
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FT_Memory memory = cffface->memory;
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FT_Int32 flags;
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FT_UInt i;
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if ( FT_NEW( cff ) )
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goto Exit;
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face->extra.data = cff;
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error = cff_font_load( stream, face_index, cff );
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if ( error )
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goto Exit;
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cff->pshinter = pshinter;
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cff->psnames = (void*)psnames;
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/* Complement the root flags with some interesting information. */
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/* Note that this is only necessary for pure CFF and CEF fonts; */
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/* SFNT based fonts use the `name' table instead. */
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cffface->num_glyphs = cff->num_glyphs;
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dict = &cff->top_font.font_dict;
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/* we need the `PSNames' module for CFF and CEF formats */
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/* which aren't CID-keyed */
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if ( dict->cid_registry == 0xFFFFU && !psnames )
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{
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FT_ERROR(( "cff_face_init:" ));
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FT_ERROR(( " cannot open CFF & CEF fonts\n" ));
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FT_ERROR(( " " ));
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FT_ERROR(( " without the `PSNames' module\n" ));
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goto Bad_Format;
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}
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if ( pure_cff )
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{
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char* style_name = NULL;
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/* set up num_faces */
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cffface->num_faces = cff->num_faces;
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/* compute number of glyphs */
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if ( dict->cid_registry != 0xFFFFU )
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cffface->num_glyphs = dict->cid_count;
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else
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cffface->num_glyphs = cff->charstrings_index.count;
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/* set global bbox, as well as EM size */
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cffface->bbox.xMin = dict->font_bbox.xMin >> 16;
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cffface->bbox.yMin = dict->font_bbox.yMin >> 16;
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cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFFU ) >> 16;
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cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFFU ) >> 16;
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if ( !dict->units_per_em )
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dict->units_per_em = 1000;
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cffface->units_per_EM = dict->units_per_em;
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cffface->ascender = (FT_Short)( cffface->bbox.yMax );
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cffface->descender = (FT_Short)( cffface->bbox.yMin );
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cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 );
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if ( cffface->height < cffface->ascender - cffface->descender )
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cffface->height = cffface->ascender - cffface->descender;
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cffface->underline_position =
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(FT_Short)( dict->underline_position >> 16 );
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cffface->underline_thickness =
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(FT_Short)( dict->underline_thickness >> 16 );
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/* retrieve font family & style name */
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cffface->family_name = cff_index_get_name( &cff->name_index,
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face_index );
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if ( cffface->family_name )
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{
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char* full = cff_index_get_sid_string( &cff->string_index,
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dict->full_name,
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psnames );
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char* fullp = full;
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char* family = cffface->family_name;
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char* family_name = 0;
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if ( dict->family_name )
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{
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family_name = cff_index_get_sid_string( &cff->string_index,
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dict->family_name,
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psnames);
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if ( family_name )
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family = family_name;
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}
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/* We try to extract the style name from the full name. */
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/* We need to ignore spaces and dashes during the search. */
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if ( full && family )
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{
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while ( *fullp )
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{
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/* skip common characters at the start of both strings */
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if ( *fullp == *family )
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{
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family++;
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fullp++;
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continue;
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}
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/* ignore spaces and dashes in full name during comparison */
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if ( *fullp == ' ' || *fullp == '-' )
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{
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fullp++;
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continue;
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}
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/* ignore spaces and dashes in family name during comparison */
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if ( *family == ' ' || *family == '-' )
|
|
{
|
|
family++;
|
|
continue;
|
|
}
|
|
|
|
if ( !*family && *fullp )
|
|
{
|
|
/* The full name begins with the same characters as the */
|
|
/* family name, with spaces and dashes removed. In this */
|
|
/* case, the remaining string in `fullp' will be used as */
|
|
/* the style name. */
|
|
style_name = cff_strcpy( memory, fullp );
|
|
}
|
|
break;
|
|
}
|
|
|
|
if ( family_name )
|
|
FT_FREE( family_name );
|
|
FT_FREE( full );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
char *cid_font_name =
|
|
cff_index_get_sid_string( &cff->string_index,
|
|
dict->cid_font_name,
|
|
psnames );
|
|
|
|
|
|
/* do we have a `/FontName' for a CID-keyed font? */
|
|
if ( cid_font_name )
|
|
cffface->family_name = cid_font_name;
|
|
}
|
|
|
|
if ( style_name )
|
|
cffface->style_name = style_name;
|
|
else
|
|
/* assume "Regular" style if we don't know better */
|
|
cffface->style_name = cff_strcpy( memory, (char *)"Regular" );
|
|
|
|
/*******************************************************************/
|
|
/* */
|
|
/* Compute face flags. */
|
|
/* */
|
|
flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */
|
|
FT_FACE_FLAG_HORIZONTAL | /* horizontal data */
|
|
FT_FACE_FLAG_HINTER; /* has native hinter */
|
|
|
|
if ( sfnt_format )
|
|
flags |= FT_FACE_FLAG_SFNT;
|
|
|
|
/* fixed width font? */
|
|
if ( dict->is_fixed_pitch )
|
|
flags |= FT_FACE_FLAG_FIXED_WIDTH;
|
|
|
|
/* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */
|
|
#if 0
|
|
/* kerning available? */
|
|
if ( face->kern_pairs )
|
|
flags |= FT_FACE_FLAG_KERNING;
|
|
#endif
|
|
|
|
cffface->face_flags = flags;
|
|
|
|
/*******************************************************************/
|
|
/* */
|
|
/* Compute style flags. */
|
|
/* */
|
|
flags = 0;
|
|
|
|
if ( dict->italic_angle )
|
|
flags |= FT_STYLE_FLAG_ITALIC;
|
|
|
|
{
|
|
char *weight = cff_index_get_sid_string( &cff->string_index,
|
|
dict->weight,
|
|
psnames );
|
|
|
|
|
|
if ( weight )
|
|
if ( !ft_strcmp( weight, "Bold" ) ||
|
|
!ft_strcmp( weight, "Black" ) )
|
|
flags |= FT_STYLE_FLAG_BOLD;
|
|
FT_FREE( weight );
|
|
}
|
|
|
|
/* double check */
|
|
if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name )
|
|
if ( !strncmp( cffface->style_name, "Bold", 4 ) ||
|
|
!strncmp( cffface->style_name, "Black", 5 ) )
|
|
flags |= FT_STYLE_FLAG_BOLD;
|
|
|
|
cffface->style_flags = flags;
|
|
}
|
|
else
|
|
{
|
|
if ( !dict->units_per_em )
|
|
dict->units_per_em = face->root.units_per_EM;
|
|
}
|
|
|
|
/* handle font matrix settings in subfonts (if any) */
|
|
for ( i = cff->num_subfonts; i > 0; i-- )
|
|
{
|
|
CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict;
|
|
CFF_FontRecDict top = &cff->top_font.font_dict;
|
|
|
|
|
|
if ( sub->units_per_em )
|
|
{
|
|
FT_Matrix scale;
|
|
|
|
|
|
scale.xx = scale.yy = (FT_Fixed)FT_DivFix( top->units_per_em,
|
|
sub->units_per_em );
|
|
scale.xy = scale.yx = 0;
|
|
|
|
FT_Matrix_Multiply( &scale, &sub->font_matrix );
|
|
FT_Vector_Transform( &sub->font_offset, &scale );
|
|
}
|
|
else
|
|
{
|
|
sub->font_matrix = top->font_matrix;
|
|
sub->font_offset = top->font_offset;
|
|
}
|
|
}
|
|
|
|
#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
|
|
/* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */
|
|
/* has unset this flag because of the 3.0 `post' table */
|
|
if ( dict->cid_registry == 0xFFFFU )
|
|
cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES;
|
|
#endif
|
|
|
|
/*******************************************************************/
|
|
/* */
|
|
/* Compute char maps. */
|
|
/* */
|
|
|
|
/* Try to synthetize a Unicode charmap if there is none available */
|
|
/* already. If an OpenType font contains a Unicode "cmap", we */
|
|
/* will use it, whatever be in the CFF part of the file. */
|
|
{
|
|
FT_CharMapRec cmaprec;
|
|
FT_CharMap cmap;
|
|
FT_UInt nn;
|
|
CFF_Encoding encoding = &cff->encoding;
|
|
|
|
|
|
for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ )
|
|
{
|
|
cmap = cffface->charmaps[nn];
|
|
|
|
/* Windows Unicode (3,1)? */
|
|
if ( cmap->platform_id == 3 && cmap->encoding_id == 1 )
|
|
goto Skip_Unicode;
|
|
|
|
/* Deprecated Unicode platform id? */
|
|
if ( cmap->platform_id == 0 )
|
|
goto Skip_Unicode; /* Standard Unicode (deprecated) */
|
|
}
|
|
|
|
/* since CID-keyed fonts don't contain glyph names, we can't */
|
|
/* construct a cmap */
|
|
if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU )
|
|
goto Exit;
|
|
|
|
/* we didn't find a Unicode charmap -- synthetize one */
|
|
cmaprec.face = cffface;
|
|
cmaprec.platform_id = 3;
|
|
cmaprec.encoding_id = 1;
|
|
cmaprec.encoding = FT_ENCODING_UNICODE;
|
|
|
|
nn = (FT_UInt)cffface->num_charmaps;
|
|
|
|
FT_CMap_New( &cff_cmap_unicode_class_rec, NULL, &cmaprec, NULL );
|
|
|
|
/* if no Unicode charmap was previously selected, select this one */
|
|
if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps )
|
|
cffface->charmap = cffface->charmaps[nn];
|
|
|
|
Skip_Unicode:
|
|
if ( encoding->count > 0 )
|
|
{
|
|
FT_CMap_Class clazz;
|
|
|
|
|
|
cmaprec.face = cffface;
|
|
cmaprec.platform_id = 7; /* Adobe platform id */
|
|
|
|
if ( encoding->offset == 0 )
|
|
{
|
|
cmaprec.encoding_id = TT_ADOBE_ID_STANDARD;
|
|
cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD;
|
|
clazz = &cff_cmap_encoding_class_rec;
|
|
}
|
|
else if ( encoding->offset == 1 )
|
|
{
|
|
cmaprec.encoding_id = TT_ADOBE_ID_EXPERT;
|
|
cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT;
|
|
clazz = &cff_cmap_encoding_class_rec;
|
|
}
|
|
else
|
|
{
|
|
cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM;
|
|
cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM;
|
|
clazz = &cff_cmap_encoding_class_rec;
|
|
}
|
|
|
|
FT_CMap_New( clazz, NULL, &cmaprec, NULL );
|
|
}
|
|
}
|
|
}
|
|
|
|
Exit:
|
|
return error;
|
|
|
|
Bad_Format:
|
|
error = CFF_Err_Unknown_File_Format;
|
|
goto Exit;
|
|
}
|
|
|
|
|
|
FT_LOCAL_DEF( void )
|
|
cff_face_done( FT_Face cffface ) /* CFF_Face */
|
|
{
|
|
CFF_Face face = (CFF_Face)cffface;
|
|
FT_Memory memory = cffface->memory;
|
|
SFNT_Service sfnt = (SFNT_Service)face->sfnt;
|
|
|
|
|
|
if ( sfnt )
|
|
sfnt->done_face( face );
|
|
|
|
{
|
|
CFF_Font cff = (CFF_Font)face->extra.data;
|
|
|
|
|
|
if ( cff )
|
|
{
|
|
cff_font_done( cff );
|
|
FT_FREE( face->extra.data );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
FT_LOCAL_DEF( FT_Error )
|
|
cff_driver_init( FT_Module module )
|
|
{
|
|
FT_UNUSED( module );
|
|
|
|
return CFF_Err_Ok;
|
|
}
|
|
|
|
|
|
FT_LOCAL_DEF( void )
|
|
cff_driver_done( FT_Module module )
|
|
{
|
|
FT_UNUSED( module );
|
|
}
|
|
|
|
|
|
/* END */
|