diff -r f9283dc4860d -r 88f2e05288ba misc/libfreetype/src/cff/cffdrivr.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libfreetype/src/cff/cffdrivr.c Mon Apr 25 01:46:54 2011 +0200 @@ -0,0 +1,671 @@ +/***************************************************************************/ +/* */ +/* cffdrivr.c */ +/* */ +/* OpenType font driver implementation (body). */ +/* */ +/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, */ +/* 2010 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 +#include FT_FREETYPE_H +#include FT_INTERNAL_DEBUG_H +#include FT_INTERNAL_STREAM_H +#include FT_INTERNAL_SFNT_H +#include FT_SERVICE_CID_H +#include FT_SERVICE_POSTSCRIPT_INFO_H +#include FT_SERVICE_POSTSCRIPT_NAME_H +#include FT_SERVICE_TT_CMAP_H + +#include "cffdrivr.h" +#include "cffgload.h" +#include "cffload.h" +#include "cffcmap.h" +#include "cffparse.h" + +#include "cfferrs.h" +#include "cffpic.h" + +#include FT_SERVICE_XFREE86_NAME_H +#include FT_SERVICE_GLYPH_DICT_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 ) + + + /*************************************************************************/ + /* */ + /* */ + /* cff_get_kerning */ + /* */ + /* */ + /* A driver method used to return the kerning vector between two */ + /* glyphs of the same face. */ + /* */ + /* */ + /* 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. */ + /* */ + /* */ + /* kerning :: The kerning vector. This is in font units for */ + /* scalable formats, and in pixels for fixed-sizes */ + /* formats. */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + /* */ + /* 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. */ + /* */ + FT_CALLBACK_DEF( FT_Error ) + cff_get_kerning( FT_Face ttface, /* TT_Face */ + FT_UInt left_glyph, + FT_UInt right_glyph, + FT_Vector* kerning ) + { + TT_Face face = (TT_Face)ttface; + SFNT_Service sfnt = (SFNT_Service)face->sfnt; + + + kerning->x = 0; + kerning->y = 0; + + if ( sfnt ) + kerning->x = sfnt->get_kerning( face, left_glyph, right_glyph ); + + return CFF_Err_Ok; + } + + +#undef PAIR_TAG + + + /*************************************************************************/ + /* */ + /* */ + /* Load_Glyph */ + /* */ + /* */ + /* A driver method used to load a glyph within a given glyph slot. */ + /* */ + /* */ + /* 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 */ + /* FT_LOAD_??? 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). */ + /* */ + /* */ + /* FreeType error code. 0 means success. */ + /* */ + FT_CALLBACK_DEF( FT_Error ) + Load_Glyph( FT_GlyphSlot cffslot, /* CFF_GlyphSlot */ + FT_Size cffsize, /* CFF_Size */ + FT_UInt glyph_index, + FT_Int32 load_flags ) + { + FT_Error error; + CFF_GlyphSlot slot = (CFF_GlyphSlot)cffslot; + CFF_Size size = (CFF_Size)cffsize; + + + 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; + + /* reset the size object if necessary */ + if ( load_flags & FT_LOAD_NO_SCALE ) + size = NULL; + + if ( size ) + { + /* these two objects must have the same parent */ + if ( cffsize->face != cffslot->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; + } + + + FT_CALLBACK_DEF( FT_Error ) + cff_get_advances( FT_Face face, + FT_UInt start, + FT_UInt count, + FT_Int32 flags, + FT_Fixed* advances ) + { + FT_UInt nn; + FT_Error error = CFF_Err_Ok; + FT_GlyphSlot slot = face->glyph; + + + flags |= (FT_UInt32)FT_LOAD_ADVANCE_ONLY; + + for ( nn = 0; nn < count; nn++ ) + { + error = Load_Glyph( slot, face->size, start + nn, flags ); + if ( error ) + break; + + advances[nn] = ( flags & FT_LOAD_VERTICAL_LAYOUT ) + ? slot->linearVertAdvance + : slot->linearHoriAdvance; + } + + return error; + } + + + /* + * GLYPH DICT SERVICE + * + */ + + 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_String* gname; + FT_UShort sid; + FT_Error error; + + + if ( !font->psnames ) + { + FT_ERROR(( "cff_get_glyph_name:" + " cannot get glyph name from CFF & CEF fonts\n" + " " + " 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, sid ); + + if ( gname ) + FT_STRCPYN( buffer, gname, buffer_max ); + + error = CFF_Err_Ok; + + Exit: + return error; + } + + + static FT_UInt + cff_get_name_index( CFF_Face face, + FT_String* glyph_name ) + { + CFF_Font cff; + CFF_Charset charset; + FT_Service_PsCMaps psnames; + FT_String* name; + FT_UShort sid; + FT_UInt i; + + + cff = (CFF_FontRec *)face->extra.data; + charset = &cff->charset; + + FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); + if ( !psnames ) + return 0; + + for ( i = 0; i < cff->num_glyphs; i++ ) + { + sid = charset->sids[i]; + + if ( sid > 390 ) + name = cff_index_get_string( cff, sid - 391 ); + else + name = (FT_String *)psnames->adobe_std_strings( sid ); + + if ( !name ) + continue; + + if ( !ft_strcmp( glyph_name, name ) ) + return i; + } + + return 0; + } + + + FT_DEFINE_SERVICE_GLYPHDICTREC(cff_service_glyph_dict, + (FT_GlyphDict_GetNameFunc) cff_get_glyph_name, + (FT_GlyphDict_NameIndexFunc)cff_get_name_index + ) + + + /* + * POSTSCRIPT INFO SERVICE + * + */ + + static FT_Int + cff_ps_has_glyph_names( FT_Face face ) + { + return ( face->face_flags & FT_FACE_FLAG_GLYPH_NAMES ) > 0; + } + + + static FT_Error + cff_ps_get_font_info( CFF_Face face, + PS_FontInfoRec* afont_info ) + { + CFF_Font cff = (CFF_Font)face->extra.data; + FT_Error error = CFF_Err_Ok; + + + if ( cff && cff->font_info == NULL ) + { + CFF_FontRecDict dict = &cff->top_font.font_dict; + PS_FontInfoRec *font_info; + FT_Memory memory = face->root.memory; + + + if ( FT_ALLOC( font_info, sizeof ( *font_info ) ) ) + goto Fail; + + font_info->version = cff_index_get_sid_string( cff, + dict->version ); + font_info->notice = cff_index_get_sid_string( cff, + dict->notice ); + font_info->full_name = cff_index_get_sid_string( cff, + dict->full_name ); + font_info->family_name = cff_index_get_sid_string( cff, + dict->family_name ); + font_info->weight = cff_index_get_sid_string( cff, + dict->weight ); + font_info->italic_angle = dict->italic_angle; + font_info->is_fixed_pitch = dict->is_fixed_pitch; + font_info->underline_position = (FT_Short)dict->underline_position; + font_info->underline_thickness = (FT_Short)dict->underline_thickness; + + cff->font_info = font_info; + } + + if ( cff ) + *afont_info = *cff->font_info; + + Fail: + return error; + } + + + FT_DEFINE_SERVICE_PSINFOREC(cff_service_ps_info, + (PS_GetFontInfoFunc) cff_ps_get_font_info, + (PS_GetFontExtraFunc) NULL, + (PS_HasGlyphNamesFunc) cff_ps_has_glyph_names, + (PS_GetFontPrivateFunc)NULL /* unsupported with CFF fonts */ + ) + + + /* + * POSTSCRIPT NAME SERVICE + * + */ + + static const char* + cff_get_ps_name( CFF_Face face ) + { + CFF_Font cff = (CFF_Font)face->extra.data; + + + return (const char*)cff->font_name; + } + + + FT_DEFINE_SERVICE_PSFONTNAMEREC(cff_service_ps_name, + (FT_PsName_GetFunc)cff_get_ps_name + ) + + + /* + * TT CMAP INFO + * + * If the charmap is a synthetic Unicode encoding cmap or + * a Type 1 standard (or expert) encoding cmap, hide TT CMAP INFO + * service defined in SFNT module. + * + * Otherwise call the service function in the sfnt module. + * + */ + static FT_Error + cff_get_cmap_info( FT_CharMap charmap, + TT_CMapInfo *cmap_info ) + { + FT_CMap cmap = FT_CMAP( charmap ); + FT_Error error = CFF_Err_Ok; + FT_Face face = FT_CMAP_FACE( cmap ); + FT_Library library = FT_FACE_LIBRARY( face ); + + + cmap_info->language = 0; + cmap_info->format = 0; + + if ( cmap->clazz != &FT_CFF_CMAP_ENCODING_CLASS_REC_GET && + cmap->clazz != &FT_CFF_CMAP_UNICODE_CLASS_REC_GET ) + { + FT_Module sfnt = FT_Get_Module( library, "sfnt" ); + FT_Service_TTCMaps service = + (FT_Service_TTCMaps)ft_module_get_service( sfnt, + FT_SERVICE_ID_TT_CMAP ); + + + if ( service && service->get_cmap_info ) + error = service->get_cmap_info( charmap, cmap_info ); + } + + return error; + } + + + FT_DEFINE_SERVICE_TTCMAPSREC(cff_service_get_cmap_info, + (TT_CMap_Info_GetFunc)cff_get_cmap_info + ) + + + /* + * CID INFO SERVICE + * + */ + static FT_Error + cff_get_ros( CFF_Face face, + const char* *registry, + const char* *ordering, + FT_Int *supplement ) + { + FT_Error error = CFF_Err_Ok; + CFF_Font cff = (CFF_Font)face->extra.data; + + + if ( cff ) + { + CFF_FontRecDict dict = &cff->top_font.font_dict; + + + if ( dict->cid_registry == 0xFFFFU ) + { + error = CFF_Err_Invalid_Argument; + goto Fail; + } + + if ( registry ) + { + if ( cff->registry == NULL ) + cff->registry = cff_index_get_sid_string( cff, + dict->cid_registry ); + *registry = cff->registry; + } + + if ( ordering ) + { + if ( cff->ordering == NULL ) + cff->ordering = cff_index_get_sid_string( cff, + dict->cid_ordering ); + *ordering = cff->ordering; + } + + /* + * XXX: According to Adobe TechNote #5176, the supplement in CFF + * can be a real number. We truncate it to fit public API + * since freetype-2.3.6. + */ + if ( supplement ) + { + if ( dict->cid_supplement < FT_INT_MIN || + dict->cid_supplement > FT_INT_MAX ) + FT_TRACE1(( "cff_get_ros: too large supplement %d is truncated\n", + dict->cid_supplement )); + *supplement = (FT_Int)dict->cid_supplement; + } + } + + Fail: + return error; + } + + + static FT_Error + cff_get_is_cid( CFF_Face face, + FT_Bool *is_cid ) + { + FT_Error error = CFF_Err_Ok; + CFF_Font cff = (CFF_Font)face->extra.data; + + + *is_cid = 0; + + if ( cff ) + { + CFF_FontRecDict dict = &cff->top_font.font_dict; + + + if ( dict->cid_registry != 0xFFFFU ) + *is_cid = 1; + } + + return error; + } + + + static FT_Error + cff_get_cid_from_glyph_index( CFF_Face face, + FT_UInt glyph_index, + FT_UInt *cid ) + { + FT_Error error = CFF_Err_Ok; + CFF_Font cff; + + + cff = (CFF_Font)face->extra.data; + + if ( cff ) + { + FT_UInt c; + CFF_FontRecDict dict = &cff->top_font.font_dict; + + + if ( dict->cid_registry == 0xFFFFU ) + { + error = CFF_Err_Invalid_Argument; + goto Fail; + } + + if ( glyph_index > cff->num_glyphs ) + { + error = CFF_Err_Invalid_Argument; + goto Fail; + } + + c = cff->charset.sids[glyph_index]; + + if ( cid ) + *cid = c; + } + + Fail: + return error; + } + + + FT_DEFINE_SERVICE_CIDREC(cff_service_cid_info, + (FT_CID_GetRegistryOrderingSupplementFunc)cff_get_ros, + (FT_CID_GetIsInternallyCIDKeyedFunc) cff_get_is_cid, + (FT_CID_GetCIDFromGlyphIndexFunc) cff_get_cid_from_glyph_index + ) + + + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ + /**** ****/ + /**** ****/ + /**** D R I V E R I N T E R F A C E ****/ + /**** ****/ + /**** ****/ + /*************************************************************************/ + /*************************************************************************/ + /*************************************************************************/ +#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES + FT_DEFINE_SERVICEDESCREC6(cff_services, + FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_CFF, + FT_SERVICE_ID_POSTSCRIPT_INFO, &FT_CFF_SERVICE_PS_INFO_GET, + FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &FT_CFF_SERVICE_PS_NAME_GET, + FT_SERVICE_ID_GLYPH_DICT, &FT_CFF_SERVICE_GLYPH_DICT_GET, + FT_SERVICE_ID_TT_CMAP, &FT_CFF_SERVICE_GET_CMAP_INFO_GET, + FT_SERVICE_ID_CID, &FT_CFF_SERVICE_CID_INFO_GET + ) +#else + FT_DEFINE_SERVICEDESCREC5(cff_services, + FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_CFF, + FT_SERVICE_ID_POSTSCRIPT_INFO, &FT_CFF_SERVICE_PS_INFO_GET, + FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &FT_CFF_SERVICE_PS_NAME_GET, + FT_SERVICE_ID_TT_CMAP, &FT_CFF_SERVICE_GET_CMAP_INFO_GET, + FT_SERVICE_ID_CID, &FT_CFF_SERVICE_CID_INFO_GET + ) +#endif + + FT_CALLBACK_DEF( FT_Module_Interface ) + cff_get_interface( FT_Module driver, /* CFF_Driver */ + const char* module_interface ) + { + FT_Module sfnt; + FT_Module_Interface result; + + + result = ft_service_list_lookup( FT_CFF_SERVICES_GET, module_interface ); + if ( result != NULL ) + return result; + + if ( !driver ) + return NULL; + + /* we pass our request to the `sfnt' module */ + sfnt = FT_Get_Module( driver->library, "sfnt" ); + + return sfnt ? sfnt->clazz->get_interface( sfnt, module_interface ) : 0; + } + + + /* The FT_DriverInterface structure is defined in ftdriver.h. */ + +#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS +#define CFF_SIZE_SELECT cff_size_select +#else +#define CFF_SIZE_SELECT 0 +#endif + + FT_DEFINE_DRIVER(cff_driver_class, + FT_MODULE_FONT_DRIVER | + FT_MODULE_DRIVER_SCALABLE | + FT_MODULE_DRIVER_HAS_HINTER, + + sizeof( CFF_DriverRec ), + "cff", + 0x10000L, + 0x20000L, + + 0, /* module-specific interface */ + + cff_driver_init, + cff_driver_done, + cff_get_interface, + + /* now the specific driver fields */ + sizeof( TT_FaceRec ), + sizeof( CFF_SizeRec ), + sizeof( CFF_GlyphSlotRec ), + + cff_face_init, + cff_face_done, + cff_size_init, + cff_size_done, + cff_slot_init, + cff_slot_done, + + ft_stub_set_char_sizes, /* FT_CONFIG_OPTION_OLD_INTERNALS */ + ft_stub_set_pixel_sizes, /* FT_CONFIG_OPTION_OLD_INTERNALS */ + + Load_Glyph, + + cff_get_kerning, + 0, /* FT_Face_AttachFunc */ + cff_get_advances, /* FT_Face_GetAdvancesFunc */ + + cff_size_request, + + CFF_SIZE_SELECT + ) + + +/* END */