diff options
| author | David Boddie <david@boddie.org.uk> | 2024-02-28 01:52:58 +0100 |
|---|---|---|
| committer | David Boddie <david@boddie.org.uk> | 2024-02-28 01:52:58 +0100 |
| commit | cbd016cda002145743d87224f0a9f9068abbfc67 (patch) | |
| tree | bcfcc9b11ea078a5fa42b16f7ea98a29d112d040 /libfreetype/cffdrivr.c | |
| parent | 75323f4992b2b4e593bd2f548db9ac6897e894d3 (diff) | |
Removed libfreetype fork, replacing it with a submodule and some Inferno-specific files.
Retained the license documents and updated the header files.
Diffstat (limited to 'libfreetype/cffdrivr.c')
| -rw-r--r-- | libfreetype/cffdrivr.c | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/libfreetype/cffdrivr.c b/libfreetype/cffdrivr.c deleted file mode 100644 index 34ed2bf7..00000000 --- a/libfreetype/cffdrivr.c +++ /dev/null @@ -1,420 +0,0 @@ -/***************************************************************************/ -/* */ -/* 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 */ |
