ref: 5441897bcbd419e455c7600ca096ec2a24741694
dir: /src/type1/t1objs.c/
/***************************************************************************/ /* */ /* t1objs.c */ /* */ /* Type 1 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 <ft2build.h> #include FT_INTERNAL_DEBUG_H #include FT_INTERNAL_STREAM_H #include <string.h> /* strcmp() */ #include FT_SOURCE_FILE(type1,t1gload.h) #include FT_SOURCE_FILE(type1,t1load.h) #ifndef T1_CONFIG_OPTION_NO_AFM #include FT_SOURCE_FILE(type1,t1afm.h) #endif #include FT_INTERNAL_POSTSCRIPT_NAMES_H #include FT_INTERNAL_POSTSCRIPT_AUX_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_t1objs /*************************************************************************/ /* */ /* FACE FUNCTIONS */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Function> */ /* T1_Done_Face */ /* */ /* <Description> */ /* The face object destructor. */ /* */ /* <Input> */ /* face :: A typeless pointer to the face object to destroy. */ /* */ FT_LOCAL_DEF void T1_Done_Face( T1_Face face ) { FT_Memory memory; T1_Font* type1 = &face->type1; if ( face ) { memory = face->root.memory; #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT /* release multiple masters information */ T1_Done_Blend( face ); face->blend = 0; #endif /* release font info strings */ { T1_FontInfo* info = &type1->font_info; FREE( info->version ); FREE( info->notice ); FREE( info->full_name ); FREE( info->family_name ); FREE( info->weight ); } /* release top dictionary */ FREE( type1->charstrings_len ); FREE( type1->charstrings ); FREE( type1->glyph_names ); FREE( type1->subrs ); FREE( type1->subrs_len ); FREE( type1->subrs_block ); FREE( type1->charstrings_block ); FREE( type1->glyph_names_block ); FREE( type1->encoding.char_index ); FREE( type1->encoding.char_name ); FREE( type1->font_name ); #ifndef T1_CONFIG_OPTION_NO_AFM /* release afm data if present */ if ( face->afm_data ) T1_Done_AFM( memory, (T1_AFM*)face->afm_data ); #endif /* release unicode map, if any */ FREE( face->unicode_map.maps ); face->unicode_map.num_maps = 0; face->root.family_name = 0; face->root.style_name = 0; } } /*************************************************************************/ /* */ /* <Function> */ /* T1_Init_Face */ /* */ /* <Description> */ /* The face object constructor. */ /* */ /* <Input> */ /* stream :: input stream where to load font data. */ /* */ /* 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 face record to build. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_LOCAL_DEF FT_Error T1_Init_Face( FT_Stream stream, T1_Face face, FT_Int face_index, FT_Int num_params, FT_Parameter* params ) { FT_Error error; PSNames_Interface* psnames; PSAux_Interface* psaux; 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; } psaux = (PSAux_Interface*)face->psaux; if ( !psaux ) { psaux = (PSAux_Interface*) FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), "psaux" ); face->psaux = psaux; } /* open the tokenizer, this will also check the font format */ error = T1_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(( "T1_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->type1.num_glyphs; root->num_charmaps = 1; root->face_index = face_index; root->face_flags = FT_FACE_FLAG_SCALABLE; root->face_flags |= FT_FACE_FLAG_HORIZONTAL; root->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; if ( face->type1.font_info.is_fixed_pitch ) root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; if ( face->blend ) root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS; /* 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->type1.font_info.family_name; if ( root->family_name ) { char* full = face->type1.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->type1.font_name ) { root->family_name = face->type1.font_name; root->style_name = (char *)"Regular"; } } /* compute style flags */ root->style_flags = 0; if ( face->type1.font_info.italic_angle ) root->style_flags |= FT_STYLE_FLAG_ITALIC; if ( face->type1.font_info.weight ) { if ( !strcmp( face->type1.font_info.weight, "Bold" ) || !strcmp( face->type1.font_info.weight, "Black" ) ) root->style_flags |= FT_STYLE_FLAG_BOLD; } /* no embedded bitmap support */ root->num_fixed_sizes = 0; root->available_sizes = 0; root->bbox = face->type1.font_bbox; /* Set units_per_EM if we didn't set it in parse_font_matrix. */ if ( !root->units_per_EM ) root->units_per_EM = 1000; root->ascender = face->type1.font_bbox.yMax >> 16; root->descender = face->type1.font_bbox.yMin >> 16; root->height = ( ( root->ascender - root->descender ) * 12 ) / 10; /* now compute the maximum advance width */ root->max_advance_width = face->type1.font_bbox.xMax >> 16; { FT_Int max_advance; error = T1_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; root->underline_position = face->type1.font_info.underline_position; root->underline_thickness = face->type1.font_info.underline_thickness; root->internal->max_points = 0; root->internal->max_contours = 0; } /* charmap support -- synthetize unicode charmap if possible */ { FT_Face root = &face->root; FT_CharMap charmap = face->charmaprecs; /* synthesize a Unicode charmap if there is support in the `PSNames' */ /* module */ if ( 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 = FT_Err_Ok; } } /* now, support either the standard, expert, or custom encoding */ 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]; } Exit: return error; } /*************************************************************************/ /* */ /* <Function> */ /* T1_Init_Driver */ /* */ /* <Description> */ /* Initializes a given Type 1 driver object. */ /* */ /* <Input> */ /* driver :: A handle to the target driver object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_LOCAL_DEF FT_Error T1_Init_Driver( T1_Driver driver ) { FT_UNUSED( driver ); return T1_Err_Ok; } /*************************************************************************/ /* */ /* <Function> */ /* T1_Done_Driver */ /* */ /* <Description> */ /* Finalizes a given Type 1 driver. */ /* */ /* <Input> */ /* driver :: A handle to the target Type 1 driver. */ /* */ FT_LOCAL void T1_Done_Driver( T1_Driver driver ) { FT_UNUSED( driver ); } /* END */