| /**************************************************************************** |
| * |
| * t1driver.c |
| * |
| * Type 1 driver interface (body). |
| * |
| * Copyright (C) 1996-2021 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 "t1driver.h" |
| #include "t1gload.h" |
| #include "t1load.h" |
| |
| #include "t1errors.h" |
| |
| #ifndef T1_CONFIG_OPTION_NO_AFM |
| #include "t1afm.h" |
| #endif |
| |
| #include <freetype/internal/ftdebug.h> |
| #include <freetype/internal/ftstream.h> |
| #include <freetype/internal/fthash.h> |
| #include <freetype/internal/ftpsprop.h> |
| #include <freetype/ftdriver.h> |
| |
| #include <freetype/internal/services/svmm.h> |
| #include <freetype/internal/services/svgldict.h> |
| #include <freetype/internal/services/svfntfmt.h> |
| #include <freetype/internal/services/svpostnm.h> |
| #include <freetype/internal/services/svpscmap.h> |
| #include <freetype/internal/services/svpsinfo.h> |
| #include <freetype/internal/services/svprop.h> |
| #include <freetype/internal/services/svkern.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 t1driver |
| |
| /* |
| * GLYPH DICT SERVICE |
| * |
| */ |
| |
| static FT_Error |
| t1_get_glyph_name( T1_Face face, |
| FT_UInt glyph_index, |
| FT_Pointer buffer, |
| FT_UInt buffer_max ) |
| { |
| FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max ); |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static FT_UInt |
| t1_get_name_index( T1_Face face, |
| const FT_String* glyph_name ) |
| { |
| FT_Int i; |
| |
| |
| for ( i = 0; i < face->type1.num_glyphs; i++ ) |
| { |
| FT_String* gname = face->type1.glyph_names[i]; |
| |
| |
| if ( !ft_strcmp( glyph_name, gname ) ) |
| return (FT_UInt)i; |
| } |
| |
| return 0; |
| } |
| |
| |
| static const FT_Service_GlyphDictRec t1_service_glyph_dict = |
| { |
| (FT_GlyphDict_GetNameFunc) t1_get_glyph_name, /* get_name */ |
| (FT_GlyphDict_NameIndexFunc)t1_get_name_index /* name_index */ |
| }; |
| |
| |
| /* |
| * POSTSCRIPT NAME SERVICE |
| * |
| */ |
| |
| static const char* |
| t1_get_ps_name( T1_Face face ) |
| { |
| return (const char*) face->type1.font_name; |
| } |
| |
| |
| static const FT_Service_PsFontNameRec t1_service_ps_name = |
| { |
| (FT_PsName_GetFunc)t1_get_ps_name /* get_ps_font_name */ |
| }; |
| |
| |
| /* |
| * MULTIPLE MASTERS SERVICE |
| * |
| */ |
| |
| #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT |
| static const FT_Service_MultiMastersRec t1_service_multi_masters = |
| { |
| (FT_Get_MM_Func) T1_Get_Multi_Master, /* get_mm */ |
| (FT_Set_MM_Design_Func) T1_Set_MM_Design, /* set_mm_design */ |
| (FT_Set_MM_Blend_Func) T1_Set_MM_Blend, /* set_mm_blend */ |
| (FT_Get_MM_Blend_Func) T1_Get_MM_Blend, /* get_mm_blend */ |
| (FT_Get_MM_Var_Func) T1_Get_MM_Var, /* get_mm_var */ |
| (FT_Set_Var_Design_Func) T1_Set_Var_Design, /* set_var_design */ |
| (FT_Get_Var_Design_Func) T1_Get_Var_Design, /* get_var_design */ |
| (FT_Set_Instance_Func) T1_Reset_MM_Blend, /* set_instance */ |
| (FT_Set_MM_WeightVector_Func)T1_Set_MM_WeightVector, /* set_mm_weightvector */ |
| (FT_Get_MM_WeightVector_Func)T1_Get_MM_WeightVector, /* get_mm_weightvector */ |
| |
| (FT_Get_Var_Blend_Func) NULL, /* get_var_blend */ |
| (FT_Done_Blend_Func) T1_Done_Blend /* done_blend */ |
| }; |
| #endif |
| |
| |
| /* |
| * POSTSCRIPT INFO SERVICE |
| * |
| */ |
| |
| static FT_Error |
| t1_ps_get_font_info( FT_Face face, |
| PS_FontInfoRec* afont_info ) |
| { |
| *afont_info = ((T1_Face)face)->type1.font_info; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static FT_Error |
| t1_ps_get_font_extra( FT_Face face, |
| PS_FontExtraRec* afont_extra ) |
| { |
| *afont_extra = ((T1_Face)face)->type1.font_extra; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static FT_Int |
| t1_ps_has_glyph_names( FT_Face face ) |
| { |
| FT_UNUSED( face ); |
| |
| return 1; |
| } |
| |
| |
| static FT_Error |
| t1_ps_get_font_private( FT_Face face, |
| PS_PrivateRec* afont_private ) |
| { |
| *afont_private = ((T1_Face)face)->type1.private_dict; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static FT_Long |
| t1_ps_get_font_value( FT_Face face, |
| PS_Dict_Keys key, |
| FT_UInt idx, |
| void *value, |
| FT_Long value_len_ ) |
| { |
| FT_ULong retval = 0; /* always >= 1 if valid */ |
| FT_ULong value_len = value_len_ < 0 ? 0 : (FT_ULong)value_len_; |
| |
| T1_Face t1face = (T1_Face)face; |
| T1_Font type1 = &t1face->type1; |
| |
| |
| switch ( key ) |
| { |
| case PS_DICT_FONT_TYPE: |
| retval = sizeof ( type1->font_type ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->font_type; |
| break; |
| |
| case PS_DICT_FONT_MATRIX: |
| if ( idx < sizeof ( type1->font_matrix ) / |
| sizeof ( type1->font_matrix.xx ) ) |
| { |
| FT_Fixed val = 0; |
| |
| |
| retval = sizeof ( val ); |
| if ( value && value_len >= retval ) |
| { |
| switch ( idx ) |
| { |
| case 0: |
| val = type1->font_matrix.xx; |
| break; |
| case 1: |
| val = type1->font_matrix.xy; |
| break; |
| case 2: |
| val = type1->font_matrix.yx; |
| break; |
| case 3: |
| val = type1->font_matrix.yy; |
| break; |
| } |
| *((FT_Fixed *)value) = val; |
| } |
| } |
| break; |
| |
| case PS_DICT_FONT_BBOX: |
| if ( idx < sizeof ( type1->font_bbox ) / |
| sizeof ( type1->font_bbox.xMin ) ) |
| { |
| FT_Fixed val = 0; |
| |
| |
| retval = sizeof ( val ); |
| if ( value && value_len >= retval ) |
| { |
| switch ( idx ) |
| { |
| case 0: |
| val = type1->font_bbox.xMin; |
| break; |
| case 1: |
| val = type1->font_bbox.yMin; |
| break; |
| case 2: |
| val = type1->font_bbox.xMax; |
| break; |
| case 3: |
| val = type1->font_bbox.yMax; |
| break; |
| } |
| *((FT_Fixed *)value) = val; |
| } |
| } |
| break; |
| |
| case PS_DICT_PAINT_TYPE: |
| retval = sizeof ( type1->paint_type ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->paint_type; |
| break; |
| |
| case PS_DICT_FONT_NAME: |
| if ( type1->font_name ) |
| { |
| retval = ft_strlen( type1->font_name ) + 1; |
| if ( value && value_len >= retval ) |
| ft_memcpy( value, (void *)( type1->font_name ), retval ); |
| } |
| break; |
| |
| case PS_DICT_UNIQUE_ID: |
| retval = sizeof ( type1->private_dict.unique_id ); |
| if ( value && value_len >= retval ) |
| *((FT_Int *)value) = type1->private_dict.unique_id; |
| break; |
| |
| case PS_DICT_NUM_CHAR_STRINGS: |
| retval = sizeof ( type1->num_glyphs ); |
| if ( value && value_len >= retval ) |
| *((FT_Int *)value) = type1->num_glyphs; |
| break; |
| |
| case PS_DICT_CHAR_STRING_KEY: |
| if ( idx < (FT_UInt)type1->num_glyphs ) |
| { |
| retval = ft_strlen( type1->glyph_names[idx] ) + 1; |
| if ( value && value_len >= retval ) |
| { |
| ft_memcpy( value, (void *)( type1->glyph_names[idx] ), retval ); |
| ((FT_Char *)value)[retval - 1] = (FT_Char)'\0'; |
| } |
| } |
| break; |
| |
| case PS_DICT_CHAR_STRING: |
| if ( idx < (FT_UInt)type1->num_glyphs ) |
| { |
| retval = type1->charstrings_len[idx] + 1; |
| if ( value && value_len >= retval ) |
| { |
| ft_memcpy( value, (void *)( type1->charstrings[idx] ), |
| retval - 1 ); |
| ((FT_Char *)value)[retval - 1] = (FT_Char)'\0'; |
| } |
| } |
| break; |
| |
| case PS_DICT_ENCODING_TYPE: |
| retval = sizeof ( type1->encoding_type ); |
| if ( value && value_len >= retval ) |
| *((T1_EncodingType *)value) = type1->encoding_type; |
| break; |
| |
| case PS_DICT_ENCODING_ENTRY: |
| if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY && |
| idx < (FT_UInt)type1->encoding.num_chars ) |
| { |
| retval = ft_strlen( type1->encoding.char_name[idx] ) + 1; |
| if ( value && value_len >= retval ) |
| { |
| ft_memcpy( value, (void *)( type1->encoding.char_name[idx] ), |
| retval - 1 ); |
| ((FT_Char *)value)[retval - 1] = (FT_Char)'\0'; |
| } |
| } |
| break; |
| |
| case PS_DICT_NUM_SUBRS: |
| retval = sizeof ( type1->num_subrs ); |
| if ( value && value_len >= retval ) |
| *((FT_Int *)value) = type1->num_subrs; |
| break; |
| |
| case PS_DICT_SUBR: |
| { |
| FT_Bool ok = 0; |
| |
| |
| if ( type1->subrs_hash ) |
| { |
| /* convert subr index to array index */ |
| size_t* val = ft_hash_num_lookup( (FT_Int)idx, |
| type1->subrs_hash ); |
| |
| |
| if ( val ) |
| { |
| idx = *val; |
| ok = 1; |
| } |
| } |
| else |
| { |
| if ( idx < (FT_UInt)type1->num_subrs ) |
| ok = 1; |
| } |
| |
| if ( ok && type1->subrs ) |
| { |
| retval = type1->subrs_len[idx] + 1; |
| if ( value && value_len >= retval ) |
| { |
| ft_memcpy( value, (void *)( type1->subrs[idx] ), retval - 1 ); |
| ((FT_Char *)value)[retval - 1] = (FT_Char)'\0'; |
| } |
| } |
| } |
| break; |
| |
| case PS_DICT_STD_HW: |
| retval = sizeof ( type1->private_dict.standard_width[0] ); |
| if ( value && value_len >= retval ) |
| *((FT_UShort *)value) = type1->private_dict.standard_width[0]; |
| break; |
| |
| case PS_DICT_STD_VW: |
| retval = sizeof ( type1->private_dict.standard_height[0] ); |
| if ( value && value_len >= retval ) |
| *((FT_UShort *)value) = type1->private_dict.standard_height[0]; |
| break; |
| |
| case PS_DICT_NUM_BLUE_VALUES: |
| retval = sizeof ( type1->private_dict.num_blue_values ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->private_dict.num_blue_values; |
| break; |
| |
| case PS_DICT_BLUE_VALUE: |
| if ( idx < type1->private_dict.num_blue_values ) |
| { |
| retval = sizeof ( type1->private_dict.blue_values[idx] ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->private_dict.blue_values[idx]; |
| } |
| break; |
| |
| case PS_DICT_BLUE_SCALE: |
| retval = sizeof ( type1->private_dict.blue_scale ); |
| if ( value && value_len >= retval ) |
| *((FT_Fixed *)value) = type1->private_dict.blue_scale; |
| break; |
| |
| case PS_DICT_BLUE_FUZZ: |
| retval = sizeof ( type1->private_dict.blue_fuzz ); |
| if ( value && value_len >= retval ) |
| *((FT_Int *)value) = type1->private_dict.blue_fuzz; |
| break; |
| |
| case PS_DICT_BLUE_SHIFT: |
| retval = sizeof ( type1->private_dict.blue_shift ); |
| if ( value && value_len >= retval ) |
| *((FT_Int *)value) = type1->private_dict.blue_shift; |
| break; |
| |
| case PS_DICT_NUM_OTHER_BLUES: |
| retval = sizeof ( type1->private_dict.num_other_blues ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->private_dict.num_other_blues; |
| break; |
| |
| case PS_DICT_OTHER_BLUE: |
| if ( idx < type1->private_dict.num_other_blues ) |
| { |
| retval = sizeof ( type1->private_dict.other_blues[idx] ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->private_dict.other_blues[idx]; |
| } |
| break; |
| |
| case PS_DICT_NUM_FAMILY_BLUES: |
| retval = sizeof ( type1->private_dict.num_family_blues ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->private_dict.num_family_blues; |
| break; |
| |
| case PS_DICT_FAMILY_BLUE: |
| if ( idx < type1->private_dict.num_family_blues ) |
| { |
| retval = sizeof ( type1->private_dict.family_blues[idx] ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->private_dict.family_blues[idx]; |
| } |
| break; |
| |
| case PS_DICT_NUM_FAMILY_OTHER_BLUES: |
| retval = sizeof ( type1->private_dict.num_family_other_blues ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->private_dict.num_family_other_blues; |
| break; |
| |
| case PS_DICT_FAMILY_OTHER_BLUE: |
| if ( idx < type1->private_dict.num_family_other_blues ) |
| { |
| retval = sizeof ( type1->private_dict.family_other_blues[idx] ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->private_dict.family_other_blues[idx]; |
| } |
| break; |
| |
| case PS_DICT_NUM_STEM_SNAP_H: |
| retval = sizeof ( type1->private_dict.num_snap_widths ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->private_dict.num_snap_widths; |
| break; |
| |
| case PS_DICT_STEM_SNAP_H: |
| if ( idx < type1->private_dict.num_snap_widths ) |
| { |
| retval = sizeof ( type1->private_dict.snap_widths[idx] ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->private_dict.snap_widths[idx]; |
| } |
| break; |
| |
| case PS_DICT_NUM_STEM_SNAP_V: |
| retval = sizeof ( type1->private_dict.num_snap_heights ); |
| if ( value && value_len >= retval ) |
| *((FT_Byte *)value) = type1->private_dict.num_snap_heights; |
| break; |
| |
| case PS_DICT_STEM_SNAP_V: |
| if ( idx < type1->private_dict.num_snap_heights ) |
| { |
| retval = sizeof ( type1->private_dict.snap_heights[idx] ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->private_dict.snap_heights[idx]; |
| } |
| break; |
| |
| case PS_DICT_RND_STEM_UP: |
| retval = sizeof ( type1->private_dict.round_stem_up ); |
| if ( value && value_len >= retval ) |
| *((FT_Bool *)value) = type1->private_dict.round_stem_up; |
| break; |
| |
| case PS_DICT_FORCE_BOLD: |
| retval = sizeof ( type1->private_dict.force_bold ); |
| if ( value && value_len >= retval ) |
| *((FT_Bool *)value) = type1->private_dict.force_bold; |
| break; |
| |
| case PS_DICT_MIN_FEATURE: |
| if ( idx < sizeof ( type1->private_dict.min_feature ) / |
| sizeof ( type1->private_dict.min_feature[0] ) ) |
| { |
| retval = sizeof ( type1->private_dict.min_feature[idx] ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->private_dict.min_feature[idx]; |
| } |
| break; |
| |
| case PS_DICT_LEN_IV: |
| retval = sizeof ( type1->private_dict.lenIV ); |
| if ( value && value_len >= retval ) |
| *((FT_Int *)value) = type1->private_dict.lenIV; |
| break; |
| |
| case PS_DICT_PASSWORD: |
| retval = sizeof ( type1->private_dict.password ); |
| if ( value && value_len >= retval ) |
| *((FT_Long *)value) = type1->private_dict.password; |
| break; |
| |
| case PS_DICT_LANGUAGE_GROUP: |
| retval = sizeof ( type1->private_dict.language_group ); |
| if ( value && value_len >= retval ) |
| *((FT_Long *)value) = type1->private_dict.language_group; |
| break; |
| |
| case PS_DICT_IS_FIXED_PITCH: |
| retval = sizeof ( type1->font_info.is_fixed_pitch ); |
| if ( value && value_len >= retval ) |
| *((FT_Bool *)value) = type1->font_info.is_fixed_pitch; |
| break; |
| |
| case PS_DICT_UNDERLINE_POSITION: |
| retval = sizeof ( type1->font_info.underline_position ); |
| if ( value && value_len >= retval ) |
| *((FT_Short *)value) = type1->font_info.underline_position; |
| break; |
| |
| case PS_DICT_UNDERLINE_THICKNESS: |
| retval = sizeof ( type1->font_info.underline_thickness ); |
| if ( value && value_len >= retval ) |
| *((FT_UShort *)value) = type1->font_info.underline_thickness; |
| break; |
| |
| case PS_DICT_FS_TYPE: |
| retval = sizeof ( type1->font_extra.fs_type ); |
| if ( value && value_len >= retval ) |
| *((FT_UShort *)value) = type1->font_extra.fs_type; |
| break; |
| |
| case PS_DICT_VERSION: |
| if ( type1->font_info.version ) |
| { |
| retval = ft_strlen( type1->font_info.version ) + 1; |
| if ( value && value_len >= retval ) |
| ft_memcpy( value, (void *)( type1->font_info.version ), retval ); |
| } |
| break; |
| |
| case PS_DICT_NOTICE: |
| if ( type1->font_info.notice ) |
| { |
| retval = ft_strlen( type1->font_info.notice ) + 1; |
| if ( value && value_len >= retval ) |
| ft_memcpy( value, (void *)( type1->font_info.notice ), retval ); |
| } |
| break; |
| |
| case PS_DICT_FULL_NAME: |
| if ( type1->font_info.full_name ) |
| { |
| retval = ft_strlen( type1->font_info.full_name ) + 1; |
| if ( value && value_len >= retval ) |
| ft_memcpy( value, (void *)( type1->font_info.full_name ), retval ); |
| } |
| break; |
| |
| case PS_DICT_FAMILY_NAME: |
| if ( type1->font_info.family_name ) |
| { |
| retval = ft_strlen( type1->font_info.family_name ) + 1; |
| if ( value && value_len >= retval ) |
| ft_memcpy( value, (void *)( type1->font_info.family_name ), |
| retval ); |
| } |
| break; |
| |
| case PS_DICT_WEIGHT: |
| if ( type1->font_info.weight ) |
| { |
| retval = ft_strlen( type1->font_info.weight ) + 1; |
| if ( value && value_len >= retval ) |
| ft_memcpy( value, (void *)( type1->font_info.weight ), retval ); |
| } |
| break; |
| |
| case PS_DICT_ITALIC_ANGLE: |
| retval = sizeof ( type1->font_info.italic_angle ); |
| if ( value && value_len >= retval ) |
| *((FT_Long *)value) = type1->font_info.italic_angle; |
| break; |
| } |
| |
| return retval == 0 ? -1 : (FT_Long)retval; |
| } |
| |
| |
| static const FT_Service_PsInfoRec t1_service_ps_info = |
| { |
| (PS_GetFontInfoFunc) t1_ps_get_font_info, /* ps_get_font_info */ |
| (PS_GetFontExtraFunc) t1_ps_get_font_extra, /* ps_get_font_extra */ |
| (PS_HasGlyphNamesFunc) t1_ps_has_glyph_names, /* ps_has_glyph_names */ |
| (PS_GetFontPrivateFunc)t1_ps_get_font_private, /* ps_get_font_private */ |
| (PS_GetFontValueFunc) t1_ps_get_font_value, /* ps_get_font_value */ |
| }; |
| |
| |
| #ifndef T1_CONFIG_OPTION_NO_AFM |
| static const FT_Service_KerningRec t1_service_kerning = |
| { |
| T1_Get_Track_Kerning, /* get_track */ |
| }; |
| #endif |
| |
| |
| /* |
| * PROPERTY SERVICE |
| * |
| */ |
| |
| FT_DEFINE_SERVICE_PROPERTIESREC( |
| t1_service_properties, |
| |
| (FT_Properties_SetFunc)ps_property_set, /* set_property */ |
| (FT_Properties_GetFunc)ps_property_get ) /* get_property */ |
| |
| |
| /* |
| * SERVICE LIST |
| * |
| */ |
| |
| static const FT_ServiceDescRec t1_services[] = |
| { |
| { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t1_service_ps_name }, |
| { FT_SERVICE_ID_GLYPH_DICT, &t1_service_glyph_dict }, |
| { FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TYPE_1 }, |
| { FT_SERVICE_ID_POSTSCRIPT_INFO, &t1_service_ps_info }, |
| { FT_SERVICE_ID_PROPERTIES, &t1_service_properties }, |
| |
| #ifndef T1_CONFIG_OPTION_NO_AFM |
| { FT_SERVICE_ID_KERNING, &t1_service_kerning }, |
| #endif |
| |
| #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT |
| { FT_SERVICE_ID_MULTI_MASTERS, &t1_service_multi_masters }, |
| #endif |
| { NULL, NULL } |
| }; |
| |
| |
| FT_CALLBACK_DEF( FT_Module_Interface ) |
| Get_Interface( FT_Module module, |
| const FT_String* t1_interface ) |
| { |
| FT_UNUSED( module ); |
| |
| return ft_service_list_lookup( t1_services, t1_interface ); |
| } |
| |
| |
| #ifndef T1_CONFIG_OPTION_NO_AFM |
| |
| /************************************************************************** |
| * |
| * @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( FT_Face t1face, /* T1_Face */ |
| FT_UInt left_glyph, |
| FT_UInt right_glyph, |
| FT_Vector* kerning ) |
| { |
| T1_Face face = (T1_Face)t1face; |
| |
| |
| kerning->x = 0; |
| kerning->y = 0; |
| |
| if ( face->afm_data ) |
| T1_Get_Kerning( (AFM_FontInfo)face->afm_data, |
| left_glyph, |
| right_glyph, |
| kerning ); |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| #endif /* T1_CONFIG_OPTION_NO_AFM */ |
| |
| |
| FT_CALLBACK_TABLE_DEF |
| const FT_Driver_ClassRec t1_driver_class = |
| { |
| { |
| FT_MODULE_FONT_DRIVER | |
| FT_MODULE_DRIVER_SCALABLE | |
| FT_MODULE_DRIVER_HAS_HINTER, |
| |
| sizeof ( PS_DriverRec ), |
| |
| "type1", |
| 0x10000L, |
| 0x20000L, |
| |
| NULL, /* module-specific interface */ |
| |
| T1_Driver_Init, /* FT_Module_Constructor module_init */ |
| T1_Driver_Done, /* FT_Module_Destructor module_done */ |
| Get_Interface, /* FT_Module_Requester get_interface */ |
| }, |
| |
| sizeof ( T1_FaceRec ), |
| sizeof ( T1_SizeRec ), |
| sizeof ( T1_GlyphSlotRec ), |
| |
| T1_Face_Init, /* FT_Face_InitFunc init_face */ |
| T1_Face_Done, /* FT_Face_DoneFunc done_face */ |
| T1_Size_Init, /* FT_Size_InitFunc init_size */ |
| T1_Size_Done, /* FT_Size_DoneFunc done_size */ |
| T1_GlyphSlot_Init, /* FT_Slot_InitFunc init_slot */ |
| T1_GlyphSlot_Done, /* FT_Slot_DoneFunc done_slot */ |
| |
| T1_Load_Glyph, /* FT_Slot_LoadFunc load_glyph */ |
| |
| #ifdef T1_CONFIG_OPTION_NO_AFM |
| NULL, /* FT_Face_GetKerningFunc get_kerning */ |
| NULL, /* FT_Face_AttachFunc attach_file */ |
| #else |
| Get_Kerning, /* FT_Face_GetKerningFunc get_kerning */ |
| T1_Read_Metrics, /* FT_Face_AttachFunc attach_file */ |
| #endif |
| T1_Get_Advances, /* FT_Face_GetAdvancesFunc get_advances */ |
| |
| T1_Size_Request, /* FT_Size_RequestFunc request_size */ |
| NULL /* FT_Size_SelectFunc select_size */ |
| }; |
| |
| |
| /* END */ |
