/**************************************************************************** * * cffdrivr.c * * OpenType font driver implementation (body). * * Copyright (C) 1996-2023 by * David Turner, Robert Wilhelm, Werner Lemberg, and Dominik Röttsches. * * 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/freetype.h> #include <freetype/internal/ftdebug.h> #include <freetype/internal/ftstream.h> #include <freetype/internal/sfnt.h> #include <freetype/internal/psaux.h> #include <freetype/internal/ftpsprop.h> #include <freetype/internal/services/svcid.h> #include <freetype/internal/services/svpsinfo.h> #include <freetype/internal/services/svpostnm.h> #include <freetype/internal/services/svttcmap.h> #include <freetype/internal/services/svcfftl.h> #include "cffdrivr.h" #include "cffgload.h" #include "cffload.h" #include "cffcmap.h" #include "cffparse.h" #include "cffobjs.h" #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT #include <freetype/internal/services/svmm.h> #include <freetype/internal/services/svmetric.h> #endif #include "cfferrs.h" #include <freetype/internal/services/svfntfmt.h> #include <freetype/internal/services/svgldict.h> #include <freetype/internal/services/svprop.h> #include <freetype/ftdriver.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 … /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /**** ****/ /**** ****/ /**** F A C E S ****/ /**** ****/ /**** ****/ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /************************************************************************** * * @Function: * cff_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. */ FT_CALLBACK_DEF( FT_Error ) cff_get_kerning( FT_Face face, /* CFF_Face */ FT_UInt left_glyph, FT_UInt right_glyph, FT_Vector* kerning ) { … } /************************************************************************** * * @Function: * cff_glyph_load * * @Description: * A driver method used to load a glyph within a given glyph slot. * * @Input: * 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). * * @Return: * FreeType error code. 0 means success. */ FT_CALLBACK_DEF( FT_Error ) cff_glyph_load( FT_GlyphSlot slot, /* CFF_GlyphSlot */ FT_Size size, /* CFF_Size */ FT_UInt glyph_index, FT_Int32 load_flags ) { … } FT_CALLBACK_DEF( FT_Error ) cff_get_advances( FT_Face face, FT_UInt start, FT_UInt count, FT_Int32 flags, FT_Fixed* advances ) { … } /* * GLYPH DICT SERVICE * */ FT_CALLBACK_DEF( FT_Error ) cff_get_glyph_name( FT_Face face, /* CFF_Face */ FT_UInt glyph_index, FT_Pointer buffer, FT_UInt buffer_max ) { … } FT_CALLBACK_DEF( FT_UInt ) cff_get_name_index( FT_Face face, /* CFF_Face */ const FT_String* glyph_name ) { … } FT_DEFINE_SERVICE_GLYPHDICTREC( cff_service_glyph_dict, cff_get_glyph_name, /* FT_GlyphDict_GetNameFunc get_name */ cff_get_name_index /* FT_GlyphDict_NameIndexFunc name_index */ ) /* * POSTSCRIPT INFO SERVICE * */ FT_CALLBACK_DEF( FT_Int ) cff_ps_has_glyph_names( FT_Face face ) { … } FT_CALLBACK_DEF( FT_Error ) cff_ps_get_font_info( FT_Face face, /* CFF_Face */ PS_FontInfoRec* afont_info ) { … } FT_CALLBACK_DEF( FT_Error ) cff_ps_get_font_extra( FT_Face face, /* CFF_Face */ PS_FontExtraRec* afont_extra ) { … } FT_DEFINE_SERVICE_PSINFOREC( cff_service_ps_info, cff_ps_get_font_info, /* PS_GetFontInfoFunc ps_get_font_info */ cff_ps_get_font_extra, /* PS_GetFontExtraFunc ps_get_font_extra */ cff_ps_has_glyph_names, /* PS_HasGlyphNamesFunc ps_has_glyph_names */ /* unsupported with CFF fonts */ NULL, /* PS_GetFontPrivateFunc ps_get_font_private */ /* not implemented */ NULL /* PS_GetFontValueFunc ps_get_font_value */ ) /* * POSTSCRIPT NAME SERVICE * */ FT_CALLBACK_DEF( const char* ) cff_get_ps_name( FT_Face face ) /* CFF_Face */ { … } FT_DEFINE_SERVICE_PSFONTNAMEREC( cff_service_ps_name, cff_get_ps_name /* FT_PsName_GetFunc get_ps_font_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. * */ FT_CALLBACK_DEF( FT_Error ) cff_get_cmap_info( FT_CharMap charmap, TT_CMapInfo *cmap_info ) { … } FT_DEFINE_SERVICE_TTCMAPSREC( cff_service_get_cmap_info, cff_get_cmap_info /* TT_CMap_Info_GetFunc get_cmap_info */ ) /* * CID INFO SERVICE * */ FT_CALLBACK_DEF( FT_Error ) cff_get_ros( FT_Face face, /* FT_Face */ const char* *registry, const char* *ordering, FT_Int *supplement ) { … } FT_CALLBACK_DEF( FT_Error ) cff_get_is_cid( FT_Face face, /* CFF_Face */ FT_Bool *is_cid ) { … } FT_CALLBACK_DEF( FT_Error ) cff_get_cid_from_glyph_index( FT_Face face, /* CFF_Face */ FT_UInt glyph_index, FT_UInt *cid ) { … } FT_DEFINE_SERVICE_CIDREC( cff_service_cid_info, cff_get_ros, /* FT_CID_GetRegistryOrderingSupplementFunc get_ros */ cff_get_is_cid, /* FT_CID_GetIsInternallyCIDKeyedFunc get_is_cid */ cff_get_cid_from_glyph_index /* FT_CID_GetCIDFromGlyphIndexFunc get_cid_from_glyph_index */ ) /* * PROPERTY SERVICE * */ FT_DEFINE_SERVICE_PROPERTIESREC( cff_service_properties, ps_property_set, /* FT_Properties_SetFunc set_property */ ps_property_get /* FT_Properties_GetFunc get_property */ ) #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT /* * MULTIPLE MASTER SERVICE * */ FT_CALLBACK_DEF( FT_Error ) cff_set_mm_blend( FT_Face face, /* CFF_Face */ FT_UInt num_coords, FT_Fixed* coords ) { … } FT_CALLBACK_DEF( FT_Error ) cff_get_mm_blend( FT_Face face, /* CFF_Face */ FT_UInt num_coords, FT_Fixed* coords ) { … } FT_CALLBACK_DEF( FT_Error ) cff_set_mm_weightvector( FT_Face face, /* CFF_Face */ FT_UInt len, FT_Fixed* weightvector ) { … } FT_CALLBACK_DEF( FT_Error ) cff_get_mm_weightvector( FT_Face face, /* CFF_Face */ FT_UInt* len, FT_Fixed* weightvector ) { … } FT_CALLBACK_DEF( void ) cff_construct_ps_name( FT_Face face ) /* CFF_Face */ { … } FT_CALLBACK_DEF( FT_Error ) cff_get_mm_var( FT_Face face, /* CFF_Face */ FT_MM_Var* *master ) { … } FT_CALLBACK_DEF( FT_Error ) cff_set_var_design( FT_Face face, /* CFF_Face */ FT_UInt num_coords, FT_Fixed* coords ) { … } FT_CALLBACK_DEF( FT_Error ) cff_get_var_design( FT_Face face, /* CFF_Face */ FT_UInt num_coords, FT_Fixed* coords ) { … } FT_CALLBACK_DEF( FT_Error ) cff_set_named_instance( FT_Face face, /* CFF_Face */ FT_UInt instance_index ) { … } FT_CALLBACK_DEF( FT_Error ) cff_get_default_named_instance( FT_Face face, /* CFF_Face */ FT_UInt *instance_index ) { … } FT_CALLBACK_DEF( FT_Error ) cff_load_item_variation_store( FT_Face face, /* CFF_Face */ FT_ULong offset, GX_ItemVarStore itemStore ) { … } FT_CALLBACK_DEF( FT_Error ) cff_load_delta_set_index_mapping( FT_Face face, /* CFF_Face */ FT_ULong offset, GX_DeltaSetIdxMap map, GX_ItemVarStore itemStore, FT_ULong table_len ) { … } FT_CALLBACK_DEF( FT_Int ) cff_get_item_delta( FT_Face face, /* CFF_Face */ GX_ItemVarStore itemStore, FT_UInt outerIndex, FT_UInt innerIndex ) { … } FT_CALLBACK_DEF( void ) cff_done_item_variation_store( FT_Face face, /* CFF_Face */ GX_ItemVarStore itemStore ) { … } FT_CALLBACK_DEF( void ) cff_done_delta_set_index_map( FT_Face face, /* CFF_Face */ GX_DeltaSetIdxMap deltaSetIdxMap ) { … } FT_DEFINE_SERVICE_MULTIMASTERSREC( cff_service_multi_masters, NULL, /* FT_Get_MM_Func get_mm */ NULL, /* FT_Set_MM_Design_Func set_mm_design */ cff_set_mm_blend, /* FT_Set_MM_Blend_Func set_mm_blend */ cff_get_mm_blend, /* FT_Get_MM_Blend_Func get_mm_blend */ cff_get_mm_var, /* FT_Get_MM_Var_Func get_mm_var */ cff_set_var_design, /* FT_Set_Var_Design_Func set_var_design */ cff_get_var_design, /* FT_Get_Var_Design_Func get_var_design */ cff_set_named_instance, /* FT_Set_Named_Instance_Func set_named_instance */ cff_get_default_named_instance, /* FT_Get_Default_Named_Instance_Func get_default_named_instance */ cff_set_mm_weightvector, /* FT_Set_MM_WeightVector_Func set_mm_weightvector */ cff_get_mm_weightvector, /* FT_Get_MM_WeightVector_Func get_mm_weightvector */ cff_construct_ps_name, /* FT_Construct_PS_Name_Func construct_ps_name */ cff_load_delta_set_index_mapping, /* FT_Var_Load_Delta_Set_Idx_Map_Func load_delta_set_idx_map */ cff_load_item_variation_store, /* FT_Var_Load_Item_Var_Store_Func load_item_variation_store */ cff_get_item_delta, /* FT_Var_Get_Item_Delta_Func get_item_delta */ cff_done_item_variation_store, /* FT_Var_Done_Item_Var_Store_Func done_item_variation_store */ cff_done_delta_set_index_map, /* FT_Var_Done_Delta_Set_Idx_Map_Func done_delta_set_index_map */ cff_get_var_blend, /* FT_Get_Var_Blend_Func get_var_blend */ cff_done_blend /* FT_Done_Blend_Func done_blend */ ) /* * METRICS VARIATIONS SERVICE * */ FT_CALLBACK_DEF( FT_Error ) cff_hadvance_adjust( FT_Face face, /* CFF_Face */ FT_UInt gindex, FT_Int *avalue ) { … } FT_CALLBACK_DEF( void ) cff_metrics_adjust( FT_Face face ) /* CFF_Face */ { … } FT_DEFINE_SERVICE_METRICSVARIATIONSREC( cff_service_metrics_variations, cff_hadvance_adjust, /* FT_HAdvance_Adjust_Func hadvance_adjust */ NULL, /* FT_LSB_Adjust_Func lsb_adjust */ NULL, /* FT_RSB_Adjust_Func rsb_adjust */ NULL, /* FT_VAdvance_Adjust_Func vadvance_adjust */ NULL, /* FT_TSB_Adjust_Func tsb_adjust */ NULL, /* FT_BSB_Adjust_Func bsb_adjust */ NULL, /* FT_VOrg_Adjust_Func vorg_adjust */ cff_metrics_adjust, /* FT_Metrics_Adjust_Func metrics_adjust */ NULL /* FT_Size_Reset_Func size_reset */ ) #endif /* * CFFLOAD SERVICE * */ FT_DEFINE_SERVICE_CFFLOADREC( cff_service_cff_load, cff_get_standard_encoding, /* FT_Get_Standard_Encoding_Func get_standard_encoding */ cff_load_private_dict, /* FT_Load_Private_Dict_Func load_private_dict */ cff_fd_select_get, /* FT_FD_Select_Get_Func fd_select_get */ cff_blend_check_vector, /* FT_Blend_Check_Vector_Func blend_check_vector */ cff_blend_build_vector /* FT_Blend_Build_Vector_Func blend_build_vector */ ) /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ /**** ****/ /**** ****/ /**** D R I V E R I N T E R F A C E ****/ /**** ****/ /**** ****/ /*************************************************************************/ /*************************************************************************/ /*************************************************************************/ #if defined TT_CONFIG_OPTION_GX_VAR_SUPPORT FT_DEFINE_SERVICEDESCREC10( cff_services, FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF, FT_SERVICE_ID_MULTI_MASTERS, &cff_service_multi_masters, FT_SERVICE_ID_METRICS_VARIATIONS, &cff_service_metrics_variations, FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info, FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name, FT_SERVICE_ID_GLYPH_DICT, &cff_service_glyph_dict, FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info, FT_SERVICE_ID_CID, &cff_service_cid_info, FT_SERVICE_ID_PROPERTIES, &cff_service_properties, FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load ) #else FT_DEFINE_SERVICEDESCREC8( cff_services, FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF, FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info, FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name, FT_SERVICE_ID_GLYPH_DICT, &cff_service_glyph_dict, FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info, FT_SERVICE_ID_CID, &cff_service_cid_info, FT_SERVICE_ID_PROPERTIES, &cff_service_properties, FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load ) #endif FT_CALLBACK_DEF( FT_Module_Interface ) cff_get_interface( FT_Module driver, /* CFF_Driver */ const char* module_interface ) { … } /* The FT_DriverInterface structure is defined in ftdriver.h. */ #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS #define CFF_SIZE_SELECT … #else #define CFF_SIZE_SELECT … #endif FT_DEFINE_DRIVER( cff_driver_class, FT_MODULE_FONT_DRIVER | FT_MODULE_DRIVER_SCALABLE | FT_MODULE_DRIVER_HAS_HINTER | FT_MODULE_DRIVER_HINTS_LIGHTLY, sizeof ( PS_DriverRec ), "cff", 0x10000L, 0x20000L, NULL, /* module-specific interface */ cff_driver_init, /* FT_Module_Constructor module_init */ cff_driver_done, /* FT_Module_Destructor module_done */ cff_get_interface, /* FT_Module_Requester get_interface */ sizeof ( TT_FaceRec ), sizeof ( CFF_SizeRec ), sizeof ( CFF_GlyphSlotRec ), cff_face_init, /* FT_Face_InitFunc init_face */ cff_face_done, /* FT_Face_DoneFunc done_face */ cff_size_init, /* FT_Size_InitFunc init_size */ cff_size_done, /* FT_Size_DoneFunc done_size */ cff_slot_init, /* FT_Slot_InitFunc init_slot */ cff_slot_done, /* FT_Slot_DoneFunc done_slot */ cff_glyph_load, /* FT_Slot_LoadFunc load_glyph */ cff_get_kerning, /* FT_Face_GetKerningFunc get_kerning */ NULL, /* FT_Face_AttachFunc attach_file */ cff_get_advances, /* FT_Face_GetAdvancesFunc get_advances */ cff_size_request, /* FT_Size_RequestFunc request_size */ CFF_SIZE_SELECT /* FT_Size_SelectFunc select_size */ ) /* END */
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