Edit
kc3-lang/freetype/src/cid/cidobjs.c
Werner Lemberg
- src/cid/cidobjs.c
-
/***************************************************************************/ /* */ /* cidobjs.c */ /* */ /* CID objects manager (body). */ /* */ /* Copyright 1996-2000 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 <freetype/internal/ftdebug.h> #include <freetype/internal/ftstream.h> #ifdef FT_FLAT_COMPILE #include "cidgload.h" #include "cidload.h" #else #include <cid/cidgload.h> #include <cid/cidload.h> #endif #include <freetype/internal/psnames.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_cidobjs /*************************************************************************/ /* */ /* FACE FUNCTIONS */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Function> */ /* CID_Done_Face */ /* */ /* <Description> */ /* Finalizes a given face object. */ /* */ /* <Input> */ /* face :: A pointer to the face object to destroy. */ /* */ LOCAL_FUNC void CID_Done_Face( CID_Face face ) { FT_Memory memory; if ( face ) { CID_Info* cid = &face->cid; T1_FontInfo* info = &cid->font_info; memory = face->root.memory; /* release FontInfo strings */ FREE( info->version ); FREE( info->notice ); FREE( info->full_name ); FREE( info->family_name ); FREE( info->weight ); /* release font dictionaries */ FREE( cid->font_dicts ); cid->num_dicts = 0; /* release other strings */ FREE( cid->cid_font_name ); FREE( cid->registry ); FREE( cid->ordering ); face->root.family_name = 0; face->root.style_name = 0; } } /*************************************************************************/ /* */ /* <Function> */ /* CID_Init_Face */ /* */ /* <Description> */ /* Initializes a given CID face object. */ /* */ /* <Input> */ /* stream :: The source font stream. */ /* */ /* face_index :: The index of the font face in the resource. */ /* */ /* num_params :: Number of additional generic parameters. Ignored. */ /* */ /* params :: Additional generic parameters. Ignored. */ /* */ /* <InOut> */ /* face :: The newly built face object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ LOCAL_FUNC FT_Error CID_Init_Face( FT_Stream stream, CID_Face face, FT_Int face_index, FT_Int num_params, FT_Parameter* params ) { FT_Error error; PSNames_Interface* psnames; FT_UNUSED( num_params ); FT_UNUSED( params ); FT_UNUSED( face_index ); FT_UNUSED( stream ); face->root.num_faces = 1; psnames = (PSNames_Interface*)face->psnames; if ( !psnames ) { psnames = (PSNames_Interface*)FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), "psnames" ); face->psnames = psnames; } /* open the tokenizer; this will also check the font format */ if ( FILE_Seek( 0 ) ) goto Exit; error = CID_Open_Face( face ); if ( error ) goto Exit; /* if we just wanted to check the format, leave successfully now */ if ( face_index < 0 ) goto Exit; /* check the face index */ if ( face_index != 0 ) { FT_ERROR(( "CID_Init_Face: invalid face index\n" )); error = T1_Err_Invalid_Argument; goto Exit; } /* Now, load the font program into the face object */ { /* Init the face object fields */ /* Now set up root face fields */ { FT_Face root = (FT_Face)&face->root; root->num_glyphs = face->cid.cid_count; root->num_charmaps = 0; root->face_index = face_index; root->face_flags = FT_FACE_FLAG_SCALABLE; root->face_flags |= FT_FACE_FLAG_HORIZONTAL; if ( face->cid.font_info.is_fixed_pitch ) root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; /* XXX: TODO: add kerning with .afm support */ /* get style name -- be careful, some broken fonts only */ /* have a /FontName dictionary entry! */ root->family_name = face->cid.font_info.family_name; if ( root->family_name ) { char* full = face->cid.font_info.full_name; char* family = root->family_name; while ( *family && *full == *family ) { family++; full++; } root->style_name = ( *full == ' ' ) ? full + 1 : (char *)"Regular"; } else { /* do we have a `/FontName'? */ if ( face->cid.cid_font_name ) { root->family_name = face->cid.cid_font_name; root->style_name = "Regular"; } } /* no embedded bitmap support */ root->num_fixed_sizes = 0; root->available_sizes = 0; root->bbox = face->cid.font_bbox; root->units_per_EM = 1000; root->ascender = (FT_Short)face->cid.font_bbox.yMax; root->descender = -(FT_Short)face->cid.font_bbox.yMin; root->height = ( ( root->ascender + root->descender ) * 12 ) / 10; #if 0 /* now compute the maximum advance width */ root->max_advance_width = face->type1.private_dict.standard_width[0]; /* compute max advance width for proportional fonts */ if ( !face->type1.font_info.is_fixed_pitch ) { FT_Int max_advance; error = CID_Compute_Max_Advance( face, &max_advance ); /* in case of error, keep the standard width */ if ( !error ) root->max_advance_width = max_advance; else error = 0; /* clear error */ } root->max_advance_height = root->height; #endif /* 0 */ root->underline_position = face->cid.font_info.underline_position; root->underline_thickness = face->cid.font_info.underline_thickness; root->max_points = 0; root->max_contours = 0; } } #if 0 /* charmap support - synthetize unicode charmap when possible */ { FT_Face root = &face->root; FT_CharMap charmap = face->charmaprecs; /* synthesize a Unicode charmap if there is support in the `psnames' */ /* module */ if ( face->psnames ) { PSNames_Interface* psnames = (PSNames_Interface*)face->psnames; if ( psnames->unicode_value ) { error = psnames->build_unicodes( root->memory, face->type1.num_glyphs, (const char**)face->type1.glyph_names, &face->unicode_map ); if ( !error ) { root->charmap = charmap; charmap->face = (FT_Face)face; charmap->encoding = ft_encoding_unicode; charmap->platform_id = 3; charmap->encoding_id = 1; charmap++; } /* simply clear the error in case of failure (which really */ /* means that out of memory or no unicode glyph names) */ error = 0; } } /* now, support either the standard, expert, or custom encodings */ charmap->face = (FT_Face)face; charmap->platform_id = 7; /* a new platform id for Adobe fonts? */ switch ( face->type1.encoding_type ) { case t1_encoding_standard: charmap->encoding = ft_encoding_adobe_standard; charmap->encoding_id = 0; break; case t1_encoding_expert: charmap->encoding = ft_encoding_adobe_expert; charmap->encoding_id = 1; break; default: charmap->encoding = ft_encoding_adobe_custom; charmap->encoding_id = 2; break; } root->charmaps = face->charmaps; root->num_charmaps = charmap - face->charmaprecs + 1; face->charmaps[0] = &face->charmaprecs[0]; face->charmaps[1] = &face->charmaprecs[1]; } #endif /* 0 */ Exit: return error; } /*************************************************************************/ /* */ /* <Function> */ /* CID_Init_Driver */ /* */ /* <Description> */ /* Initializes a given CID driver object. */ /* */ /* <Input> */ /* driver :: A handle to the target driver object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ LOCAL_FUNC FT_Error CID_Init_Driver( CID_Driver driver ) { FT_UNUSED( driver ); return T1_Err_Ok; } /*************************************************************************/ /* */ /* <Function> */ /* CID_Done_Driver */ /* */ /* <Description> */ /* Finalizes a given CID driver. */ /* */ /* <Input> */ /* driver :: A handle to the target CID driver. */ /* */ LOCAL_DEF void CID_Done_Driver( CID_Driver driver ) { FT_UNUSED( driver ); } /* END */