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-rw-r--r--libfreetype/cffdrivr.c420
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diff --git a/libfreetype/cffdrivr.c b/libfreetype/cffdrivr.c
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--- a/libfreetype/cffdrivr.c
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-/***************************************************************************/
-/* */
-/* cffdrivr.c */
-/* */
-/* OpenType font driver implementation (body). */
-/* */
-/* Copyright 1996-2001, 2002 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_FREETYPE_H
-#include FT_INTERNAL_DEBUG_H
-#include FT_INTERNAL_STREAM_H
-#include FT_INTERNAL_SFNT_H
-#include FT_TRUETYPE_IDS_H
-#include FT_INTERNAL_POSTSCRIPT_NAMES_H
-
-#include "cffdrivr.h"
-#include "cffgload.h"
-#include "cffload.h"
-
-#include "cfferrs.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_cffdriver
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** F A C E S ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
-#undef PAIR_TAG
-#define PAIR_TAG( left, right ) ( ( (FT_ULong)left << 16 ) | \
- (FT_ULong)right )
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* Get_Kerning */
- /* */
- /* <Description> */
- /* A driver method used to return the kerning vector between two */
- /* glyphs of the same face. */
- /* */
- /* <Input> */
- /* face :: A handle to the source face object. */
- /* */
- /* left_glyph :: The index of the left glyph in the kern pair. */
- /* */
- /* right_glyph :: The index of the right glyph in the kern pair. */
- /* */
- /* <Output> */
- /* kerning :: The kerning vector. This is in font units for */
- /* scalable formats, and in pixels for fixed-sizes */
- /* formats. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* Only horizontal layouts (left-to-right & right-to-left) are */
- /* supported by this function. Other layouts, or more sophisticated */
- /* kernings, are out of scope of this method (the basic driver */
- /* interface is meant to be simple). */
- /* */
- /* They can be implemented by format-specific interfaces. */
- /* */
- static FT_Error
- Get_Kerning( TT_Face face,
- FT_UInt left_glyph,
- FT_UInt right_glyph,
- FT_Vector* kerning )
- {
- TT_Kern0_Pair pair;
-
-
- if ( !face )
- return CFF_Err_Invalid_Face_Handle;
-
- kerning->x = 0;
- kerning->y = 0;
-
- if ( face->kern_pairs )
- {
- /* there are some kerning pairs in this font file! */
- FT_ULong search_tag = PAIR_TAG( left_glyph, right_glyph );
- FT_Long left, right;
-
-
- left = 0;
- right = face->num_kern_pairs - 1;
-
- while ( left <= right )
- {
- FT_Long middle = left + ( ( right - left ) >> 1 );
- FT_ULong cur_pair;
-
-
- pair = face->kern_pairs + middle;
- cur_pair = PAIR_TAG( pair->left, pair->right );
-
- if ( cur_pair == search_tag )
- goto Found;
-
- if ( cur_pair < search_tag )
- left = middle + 1;
- else
- right = middle - 1;
- }
- }
-
- Exit:
- return CFF_Err_Ok;
-
- Found:
- kerning->x = pair->value;
- goto Exit;
- }
-
-
-#undef PAIR_TAG
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* Load_Glyph */
- /* */
- /* <Description> */
- /* A driver method used to load a glyph within a given glyph slot. */
- /* */
- /* <Input> */
- /* slot :: A handle to the target slot object where the glyph */
- /* will be loaded. */
- /* */
- /* size :: A handle to the source face size at which the glyph */
- /* must be scaled, loaded, etc. */
- /* */
- /* glyph_index :: The index of the glyph in the font file. */
- /* */
- /* load_flags :: A flag indicating what to load for this glyph. The */
- /* FTLOAD_??? constants can be used to control the */
- /* glyph loading process (e.g., whether the outline */
- /* should be scaled, whether to load bitmaps or not, */
- /* whether to hint the outline, etc). */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- static FT_Error
- Load_Glyph( CFF_GlyphSlot slot,
- CFF_Size size,
- FT_UShort glyph_index,
- FT_Int32 load_flags )
- {
- FT_Error error;
-
-
- if ( !slot )
- return CFF_Err_Invalid_Slot_Handle;
-
- /* check whether we want a scaled outline or bitmap */
- if ( !size )
- load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
-
- if ( load_flags & FT_LOAD_NO_SCALE )
- size = NULL;
-
- /* reset the size object if necessary */
- if ( size )
- {
- /* these two object must have the same parent */
- if ( size->face != slot->root.face )
- return CFF_Err_Invalid_Face_Handle;
- }
-
- /* now load the glyph outline if necessary */
- error = cff_slot_load( slot, size, glyph_index, load_flags );
-
- /* force drop-out mode to 2 - irrelevant now */
- /* slot->outline.dropout_mode = 2; */
-
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** C H A R A C T E R M A P P I N G S ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
- static FT_Error
- cff_get_glyph_name( CFF_Face face,
- FT_UInt glyph_index,
- FT_Pointer buffer,
- FT_UInt buffer_max )
- {
- CFF_Font font = (CFF_Font)face->extra.data;
- FT_Memory memory = FT_FACE_MEMORY( face );
- FT_String* gname;
- FT_UShort sid;
- PSNames_Service psnames;
- FT_Error error;
-
-
- psnames = (PSNames_Service)FT_Get_Module_Interface(
- face->root.driver->root.library, "psnames" );
-
- if ( !psnames )
- {
- FT_ERROR(( "cff_get_glyph_name:" ));
- FT_ERROR(( " cannot open CFF & CEF fonts\n" ));
- FT_ERROR(( " " ));
- FT_ERROR(( " without the `PSNames' module\n" ));
- error = CFF_Err_Unknown_File_Format;
- goto Exit;
- }
-
- /* first, locate the sid in the charset table */
- sid = font->charset.sids[glyph_index];
-
- /* now, lookup the name itself */
- gname = cff_index_get_sid_string( &font->string_index, sid, psnames );
-
- if ( buffer_max > 0 )
- {
- FT_UInt len = (FT_UInt)ft_strlen( gname );
-
-
- if ( len >= buffer_max )
- len = buffer_max - 1;
-
- FT_MEM_COPY( buffer, gname, len );
- ((FT_Byte*)buffer)[len] = 0;
- }
-
- FT_FREE ( gname );
- error = CFF_Err_Ok;
-
- Exit:
- return error;
- }
-
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* cff_get_name_index */
- /* */
- /* <Description> */
- /* Uses the psnames module and the CFF font's charset to to return a */
- /* a given glyph name's glyph index. */
- /* */
- /* <Input> */
- /* face :: A handle to the source face object. */
- /* */
- /* glyph_name :: The glyph name. */
- /* */
- /* <Return> */
- /* Glyph index. 0 means `undefined character code'. */
- /* */
- static FT_UInt
- cff_get_name_index( CFF_Face face,
- FT_String* glyph_name )
- {
- CFF_Font cff;
- CFF_Charset charset;
- PSNames_Service psnames;
- FT_Memory memory = FT_FACE_MEMORY( face );
- FT_String* name;
- FT_UShort sid;
- FT_UInt i;
- FT_Int result;
-
-
- cff = (CFF_FontRec *)face->extra.data;
- charset = &cff->charset;
-
- psnames = (PSNames_Service)FT_Get_Module_Interface(
- face->root.driver->root.library, "psnames" );
-
- for ( i = 0; i < cff->num_glyphs; i++ )
- {
- sid = charset->sids[i];
-
- if ( sid > 390 )
- name = cff_index_get_name( &cff->string_index, sid - 391 );
- else
- name = (FT_String *)psnames->adobe_std_strings( sid );
-
- result = ft_strcmp( glyph_name, name );
-
- if ( sid > 390 )
- FT_FREE( name );
-
- if ( !result )
- return i;
- }
-
- return 0;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** D R I V E R I N T E R F A C E ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
- static FT_Module_Interface
- cff_get_interface( CFF_Driver driver,
- const char* module_interface )
- {
- FT_Module sfnt;
-
-
-#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
-
- if ( ft_strcmp( (const char*)module_interface, "glyph_name" ) == 0 )
- return (FT_Module_Interface)cff_get_glyph_name;
-
- if ( ft_strcmp( (const char*)module_interface, "name_index" ) == 0 )
- return (FT_Module_Interface)cff_get_name_index;
-
-#endif
-
- /* we simply pass our request to the `sfnt' module */
- sfnt = FT_Get_Module( driver->root.root.library, "sfnt" );
-
- return sfnt ? sfnt->clazz->get_interface( sfnt, module_interface ) : 0;
- }
-
-
- /* The FT_DriverInterface structure is defined in ftdriver.h. */
-
- FT_CALLBACK_TABLE_DEF
- const FT_Driver_ClassRec cff_driver_class =
- {
- /* begin with the FT_Module_Class fields */
- {
- ft_module_font_driver |
- ft_module_driver_scalable |
- ft_module_driver_has_hinter,
-
- sizeof( CFF_DriverRec ),
- "cff",
- 0x10000L,
- 0x20000L,
-
- 0, /* module-specific interface */
-
- (FT_Module_Constructor)cff_driver_init,
- (FT_Module_Destructor) cff_driver_done,
- (FT_Module_Requester) cff_get_interface,
- },
-
- /* now the specific driver fields */
- sizeof( TT_FaceRec ),
- sizeof( FT_SizeRec ),
- sizeof( CFF_GlyphSlotRec ),
-
- (FT_Face_InitFunc) cff_face_init,
- (FT_Face_DoneFunc) cff_face_done,
- (FT_Size_InitFunc) cff_size_init,
- (FT_Size_DoneFunc) cff_size_done,
- (FT_Slot_InitFunc) cff_slot_init,
- (FT_Slot_DoneFunc) cff_slot_done,
-
- (FT_Size_ResetPointsFunc)cff_size_reset,
- (FT_Size_ResetPixelsFunc)cff_size_reset,
-
- (FT_Slot_LoadFunc) Load_Glyph,
-
- (FT_Face_GetKerningFunc) Get_Kerning,
- (FT_Face_AttachFunc) 0,
- (FT_Face_GetAdvancesFunc)0,
- };
-
-
-/* END */
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