| /**************************************************************************** |
| * |
| * t1objs.c |
| * |
| * Type 1 objects manager (body). |
| * |
| * Copyright (C) 1996-2022 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/ftcalc.h> |
| #include <freetype/internal/ftdebug.h> |
| #include <freetype/internal/ftstream.h> |
| #include <freetype/ttnameid.h> |
| #include <freetype/ftdriver.h> |
| |
| #include "t1gload.h" |
| #include "t1load.h" |
| |
| #include "t1errors.h" |
| |
| #ifndef T1_CONFIG_OPTION_NO_AFM |
| #include "t1afm.h" |
| #endif |
| |
| #include <freetype/internal/services/svpscmap.h> |
| #include <freetype/internal/psaux.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 t1objs |
| |
| |
| /************************************************************************** |
| * |
| * SIZE FUNCTIONS |
| * |
| */ |
| |
| |
| static PSH_Globals_Funcs |
| T1_Size_Get_Globals_Funcs( T1_Size size ) |
| { |
| T1_Face face = (T1_Face)size->root.face; |
| PSHinter_Service pshinter = (PSHinter_Service)face->pshinter; |
| FT_Module module; |
| |
| |
| module = FT_Get_Module( size->root.face->driver->root.library, |
| "pshinter" ); |
| return ( module && pshinter && pshinter->get_globals_funcs ) |
| ? pshinter->get_globals_funcs( module ) |
| : 0; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| T1_Size_Done( FT_Size t1size ) /* T1_Size */ |
| { |
| T1_Size size = (T1_Size)t1size; |
| |
| |
| if ( t1size->internal->module_data ) |
| { |
| PSH_Globals_Funcs funcs; |
| |
| |
| funcs = T1_Size_Get_Globals_Funcs( size ); |
| if ( funcs ) |
| funcs->destroy( (PSH_Globals)t1size->internal->module_data ); |
| |
| t1size->internal->module_data = NULL; |
| } |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| T1_Size_Init( FT_Size t1size ) /* T1_Size */ |
| { |
| T1_Size size = (T1_Size)t1size; |
| FT_Error error = FT_Err_Ok; |
| PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size ); |
| |
| |
| if ( funcs ) |
| { |
| PSH_Globals globals; |
| T1_Face face = (T1_Face)size->root.face; |
| |
| |
| error = funcs->create( size->root.face->memory, |
| &face->type1.private_dict, &globals ); |
| if ( !error ) |
| t1size->internal->module_data = globals; |
| } |
| |
| return error; |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| T1_Size_Request( FT_Size t1size, /* T1_Size */ |
| FT_Size_Request req ) |
| { |
| FT_Error error; |
| |
| T1_Size size = (T1_Size)t1size; |
| PSH_Globals_Funcs funcs = T1_Size_Get_Globals_Funcs( size ); |
| |
| |
| error = FT_Request_Metrics( size->root.face, req ); |
| if ( error ) |
| goto Exit; |
| |
| if ( funcs ) |
| funcs->set_scale( (PSH_Globals)t1size->internal->module_data, |
| size->root.metrics.x_scale, |
| size->root.metrics.y_scale, |
| 0, 0 ); |
| |
| Exit: |
| return error; |
| } |
| |
| |
| /************************************************************************** |
| * |
| * SLOT FUNCTIONS |
| * |
| */ |
| |
| FT_LOCAL_DEF( void ) |
| T1_GlyphSlot_Done( FT_GlyphSlot slot ) |
| { |
| slot->internal->glyph_hints = NULL; |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| T1_GlyphSlot_Init( FT_GlyphSlot slot ) |
| { |
| T1_Face face; |
| PSHinter_Service pshinter; |
| |
| |
| face = (T1_Face)slot->face; |
| pshinter = (PSHinter_Service)face->pshinter; |
| |
| if ( pshinter ) |
| { |
| FT_Module module; |
| |
| |
| module = FT_Get_Module( slot->face->driver->root.library, |
| "pshinter" ); |
| if ( module ) |
| { |
| T1_Hints_Funcs funcs; |
| |
| |
| funcs = pshinter->get_t1_funcs( module ); |
| slot->internal->glyph_hints = (void*)funcs; |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| /************************************************************************** |
| * |
| * FACE FUNCTIONS |
| * |
| */ |
| |
| |
| /************************************************************************** |
| * |
| * @Function: |
| * T1_Face_Done |
| * |
| * @Description: |
| * The face object destructor. |
| * |
| * @Input: |
| * face :: |
| * A typeless pointer to the face object to destroy. |
| */ |
| FT_LOCAL_DEF( void ) |
| T1_Face_Done( FT_Face t1face ) /* T1_Face */ |
| { |
| T1_Face face = (T1_Face)t1face; |
| FT_Memory memory; |
| T1_Font type1; |
| |
| |
| if ( !face ) |
| return; |
| |
| memory = face->root.memory; |
| type1 = &face->type1; |
| |
| #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT |
| /* release multiple masters information */ |
| FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) ); |
| |
| if ( face->buildchar ) |
| { |
| FT_FREE( face->buildchar ); |
| |
| face->len_buildchar = 0; |
| } |
| |
| T1_Done_Blend( face ); |
| face->blend = NULL; |
| #endif |
| |
| /* release font info strings */ |
| { |
| PS_FontInfo info = &type1->font_info; |
| |
| |
| FT_FREE( info->version ); |
| FT_FREE( info->notice ); |
| FT_FREE( info->full_name ); |
| FT_FREE( info->family_name ); |
| FT_FREE( info->weight ); |
| } |
| |
| /* release top dictionary */ |
| FT_FREE( type1->charstrings_len ); |
| FT_FREE( type1->charstrings ); |
| FT_FREE( type1->glyph_names ); |
| |
| FT_FREE( type1->subrs ); |
| FT_FREE( type1->subrs_len ); |
| |
| ft_hash_num_free( type1->subrs_hash, memory ); |
| FT_FREE( type1->subrs_hash ); |
| |
| FT_FREE( type1->subrs_block ); |
| FT_FREE( type1->charstrings_block ); |
| FT_FREE( type1->glyph_names_block ); |
| |
| FT_FREE( type1->encoding.char_index ); |
| FT_FREE( type1->encoding.char_name ); |
| FT_FREE( type1->font_name ); |
| |
| #ifndef T1_CONFIG_OPTION_NO_AFM |
| /* release afm data if present */ |
| if ( face->afm_data ) |
| T1_Done_Metrics( memory, (AFM_FontInfo)face->afm_data ); |
| #endif |
| |
| /* release unicode map, if any */ |
| #if 0 |
| FT_FREE( face->unicode_map_rec.maps ); |
| face->unicode_map_rec.num_maps = 0; |
| face->unicode_map = NULL; |
| #endif |
| |
| face->root.family_name = NULL; |
| face->root.style_name = NULL; |
| } |
| |
| |
| /************************************************************************** |
| * |
| * @Function: |
| * T1_Face_Init |
| * |
| * @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_Face_Init( FT_Stream stream, |
| FT_Face t1face, /* T1_Face */ |
| FT_Int face_index, |
| FT_Int num_params, |
| FT_Parameter* params ) |
| { |
| T1_Face face = (T1_Face)t1face; |
| FT_Error error; |
| FT_Service_PsCMaps psnames; |
| PSAux_Service psaux; |
| T1_Font type1 = &face->type1; |
| PS_FontInfo info = &type1->font_info; |
| |
| FT_UNUSED( num_params ); |
| FT_UNUSED( params ); |
| FT_UNUSED( stream ); |
| |
| |
| face->root.num_faces = 1; |
| |
| FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); |
| face->psnames = psnames; |
| |
| face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), |
| "psaux" ); |
| psaux = (PSAux_Service)face->psaux; |
| if ( !psaux ) |
| { |
| FT_ERROR(( "T1_Face_Init: cannot access `psaux' module\n" )); |
| error = FT_THROW( Missing_Module ); |
| goto Exit; |
| } |
| |
| face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), |
| "pshinter" ); |
| |
| FT_TRACE2(( "Type 1 driver\n" )); |
| |
| /* open the tokenizer; this will also check the font format */ |
| error = T1_Open_Face( face ); |
| if ( error ) |
| goto Exit; |
| |
| FT_TRACE2(( "T1_Face_Init: %p (index %d)\n", |
| (void *)face, |
| face_index )); |
| |
| /* if we just wanted to check the format, leave successfully now */ |
| if ( face_index < 0 ) |
| goto Exit; |
| |
| /* check the face index */ |
| if ( ( face_index & 0xFFFF ) > 0 ) |
| { |
| FT_ERROR(( "T1_Face_Init: invalid face index\n" )); |
| error = FT_THROW( Invalid_Argument ); |
| goto Exit; |
| } |
| |
| /* now load the font program into the face object */ |
| |
| /* initialize the face object fields */ |
| |
| /* set up root face fields */ |
| { |
| FT_Face root = (FT_Face)&face->root; |
| |
| |
| root->num_glyphs = type1->num_glyphs; |
| root->face_index = 0; |
| |
| root->face_flags |= FT_FACE_FLAG_SCALABLE | |
| FT_FACE_FLAG_HORIZONTAL | |
| FT_FACE_FLAG_GLYPH_NAMES | |
| FT_FACE_FLAG_HINTER; |
| |
| if ( info->is_fixed_pitch ) |
| root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; |
| |
| if ( face->blend ) |
| root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS; |
| |
| /* The following code to extract the family and the style is very */ |
| /* simplistic and might get some things wrong. For a full-featured */ |
| /* algorithm you might have a look at the whitepaper given at */ |
| /* */ |
| /* https://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-model.aspx */ |
| |
| /* get style name -- be careful, some broken fonts only */ |
| /* have a `/FontName' dictionary entry! */ |
| root->family_name = info->family_name; |
| root->style_name = NULL; |
| |
| if ( root->family_name ) |
| { |
| char* full = info->full_name; |
| char* family = root->family_name; |
| |
| |
| if ( full ) |
| { |
| FT_Bool the_same = TRUE; |
| |
| |
| while ( *full ) |
| { |
| if ( *full == *family ) |
| { |
| family++; |
| full++; |
| } |
| else |
| { |
| if ( *full == ' ' || *full == '-' ) |
| full++; |
| else if ( *family == ' ' || *family == '-' ) |
| family++; |
| else |
| { |
| the_same = FALSE; |
| |
| if ( !*family ) |
| root->style_name = full; |
| break; |
| } |
| } |
| } |
| |
| if ( the_same ) |
| root->style_name = (char *)"Regular"; |
| } |
| } |
| else |
| { |
| /* do we have a `/FontName'? */ |
| if ( type1->font_name ) |
| root->family_name = type1->font_name; |
| } |
| |
| if ( !root->style_name ) |
| { |
| if ( info->weight ) |
| root->style_name = info->weight; |
| else |
| /* assume `Regular' style because we don't know better */ |
| root->style_name = (char *)"Regular"; |
| } |
| |
| /* compute style flags */ |
| root->style_flags = 0; |
| if ( info->italic_angle ) |
| root->style_flags |= FT_STYLE_FLAG_ITALIC; |
| if ( info->weight ) |
| { |
| if ( !ft_strcmp( info->weight, "Bold" ) || |
| !ft_strcmp( info->weight, "Black" ) ) |
| root->style_flags |= FT_STYLE_FLAG_BOLD; |
| } |
| |
| /* no embedded bitmap support */ |
| root->num_fixed_sizes = 0; |
| root->available_sizes = NULL; |
| |
| root->bbox.xMin = type1->font_bbox.xMin >> 16; |
| root->bbox.yMin = type1->font_bbox.yMin >> 16; |
| /* no `U' suffix here to 0xFFFF! */ |
| root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFF ) >> 16; |
| root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFF ) >> 16; |
| |
| /* Set units_per_EM if we didn't set it in t1_parse_font_matrix. */ |
| if ( !root->units_per_EM ) |
| root->units_per_EM = 1000; |
| |
| root->ascender = (FT_Short)( root->bbox.yMax ); |
| root->descender = (FT_Short)( root->bbox.yMin ); |
| |
| root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 ); |
| if ( root->height < root->ascender - root->descender ) |
| root->height = (FT_Short)( root->ascender - root->descender ); |
| |
| /* now compute the maximum advance width */ |
| root->max_advance_width = |
| (FT_Short)( root->bbox.xMax ); |
| { |
| FT_Pos max_advance; |
| |
| |
| error = T1_Compute_Max_Advance( face, &max_advance ); |
| |
| /* in case of error, keep the standard width */ |
| if ( !error ) |
| root->max_advance_width = (FT_Short)FIXED_TO_INT( max_advance ); |
| else |
| error = FT_Err_Ok; /* clear error */ |
| } |
| |
| root->max_advance_height = root->height; |
| |
| root->underline_position = (FT_Short)info->underline_position; |
| root->underline_thickness = (FT_Short)info->underline_thickness; |
| } |
| |
| { |
| FT_Face root = &face->root; |
| |
| |
| if ( psnames ) |
| { |
| FT_CharMapRec charmap; |
| T1_CMap_Classes cmap_classes = psaux->t1_cmap_classes; |
| FT_CMap_Class clazz; |
| |
| |
| charmap.face = root; |
| |
| /* first of all, try to synthesize a Unicode charmap */ |
| charmap.platform_id = TT_PLATFORM_MICROSOFT; |
| charmap.encoding_id = TT_MS_ID_UNICODE_CS; |
| charmap.encoding = FT_ENCODING_UNICODE; |
| |
| error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL ); |
| if ( error && |
| FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) && |
| FT_ERR_NEQ( error, Unimplemented_Feature ) ) |
| goto Exit; |
| error = FT_Err_Ok; |
| |
| /* now, generate an Adobe Standard encoding when appropriate */ |
| charmap.platform_id = TT_PLATFORM_ADOBE; |
| clazz = NULL; |
| |
| switch ( type1->encoding_type ) |
| { |
| case T1_ENCODING_TYPE_STANDARD: |
| charmap.encoding = FT_ENCODING_ADOBE_STANDARD; |
| charmap.encoding_id = TT_ADOBE_ID_STANDARD; |
| clazz = cmap_classes->standard; |
| break; |
| |
| case T1_ENCODING_TYPE_EXPERT: |
| charmap.encoding = FT_ENCODING_ADOBE_EXPERT; |
| charmap.encoding_id = TT_ADOBE_ID_EXPERT; |
| clazz = cmap_classes->expert; |
| break; |
| |
| case T1_ENCODING_TYPE_ARRAY: |
| charmap.encoding = FT_ENCODING_ADOBE_CUSTOM; |
| charmap.encoding_id = TT_ADOBE_ID_CUSTOM; |
| clazz = cmap_classes->custom; |
| break; |
| |
| case T1_ENCODING_TYPE_ISOLATIN1: |
| charmap.encoding = FT_ENCODING_ADOBE_LATIN_1; |
| charmap.encoding_id = TT_ADOBE_ID_LATIN_1; |
| clazz = cmap_classes->unicode; |
| break; |
| |
| default: |
| ; |
| } |
| |
| if ( clazz ) |
| error = FT_CMap_New( clazz, NULL, &charmap, NULL ); |
| } |
| } |
| |
| Exit: |
| return error; |
| } |
| |
| |
| /************************************************************************** |
| * |
| * @Function: |
| * T1_Driver_Init |
| * |
| * @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_Driver_Init( FT_Module module ) |
| { |
| PS_Driver driver = (PS_Driver)module; |
| |
| FT_UInt32 seed; |
| |
| |
| /* set default property values, cf. `ftt1drv.h' */ |
| driver->hinting_engine = FT_HINTING_ADOBE; |
| |
| driver->no_stem_darkening = TRUE; |
| |
| driver->darken_params[0] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1; |
| driver->darken_params[1] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1; |
| driver->darken_params[2] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2; |
| driver->darken_params[3] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2; |
| driver->darken_params[4] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3; |
| driver->darken_params[5] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3; |
| driver->darken_params[6] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4; |
| driver->darken_params[7] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4; |
| |
| /* compute random seed from some memory addresses */ |
| seed = (FT_UInt32)( (FT_Offset)(char*)&seed ^ |
| (FT_Offset)(char*)&module ^ |
| (FT_Offset)(char*)module->memory ); |
| seed = seed ^ ( seed >> 10 ) ^ ( seed >> 20 ); |
| |
| driver->random_seed = (FT_Int32)seed; |
| if ( driver->random_seed < 0 ) |
| driver->random_seed = -driver->random_seed; |
| else if ( driver->random_seed == 0 ) |
| driver->random_seed = 123456789; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| /************************************************************************** |
| * |
| * @Function: |
| * T1_Driver_Done |
| * |
| * @Description: |
| * Finalizes a given Type 1 driver. |
| * |
| * @Input: |
| * driver :: |
| * A handle to the target Type 1 driver. |
| */ |
| FT_LOCAL_DEF( void ) |
| T1_Driver_Done( FT_Module driver ) |
| { |
| FT_UNUSED( driver ); |
| } |
| |
| |
| /* END */ |