ref: 7e1cce58b58a6c368ca390fa35cfc99aafa9e54d
dir: /src/pfr/pfrdrivr.c/
/***************************************************************************/ /* */ /* pfrdrivr.c */ /* */ /* FreeType PFR driver interface (body). */ /* */ /* Copyright 2002-2017 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 FT_SERVICE_PFR_H #include FT_SERVICE_FONT_FORMAT_H #include "pfrdrivr.h" #include "pfrobjs.h" #include "pfrerror.h" FT_CALLBACK_DEF( FT_Error ) pfr_get_kerning( FT_Face pfrface, /* PFR_Face */ FT_UInt left, FT_UInt right, FT_Vector *avector ) { PFR_Face face = (PFR_Face)pfrface; PFR_PhyFont phys = &face->phy_font; (void)pfr_face_get_kerning( pfrface, left, right, avector ); /* convert from metrics to outline units when necessary */ if ( phys->outline_resolution != phys->metrics_resolution ) { if ( avector->x != 0 ) avector->x = FT_MulDiv( avector->x, (FT_Long)phys->outline_resolution, (FT_Long)phys->metrics_resolution ); if ( avector->y != 0 ) avector->y = FT_MulDiv( avector->y, (FT_Long)phys->outline_resolution, (FT_Long)phys->metrics_resolution ); } return FT_Err_Ok; } /* * PFR METRICS SERVICE * */ FT_CALLBACK_DEF( FT_Error ) pfr_get_advance( FT_Face pfrface, /* PFR_Face */ FT_UInt gindex, FT_Pos *anadvance ) { PFR_Face face = (PFR_Face)pfrface; FT_Error error = FT_ERR( Invalid_Argument ); *anadvance = 0; if ( !gindex ) goto Exit; gindex--; if ( face ) { PFR_PhyFont phys = &face->phy_font; if ( gindex < phys->num_chars ) { *anadvance = phys->chars[gindex].advance; error = FT_Err_Ok; } } Exit: return error; } FT_CALLBACK_DEF( FT_Error ) pfr_get_metrics( FT_Face pfrface, /* PFR_Face */ FT_UInt *anoutline_resolution, FT_UInt *ametrics_resolution, FT_Fixed *ametrics_x_scale, FT_Fixed *ametrics_y_scale ) { PFR_Face face = (PFR_Face)pfrface; PFR_PhyFont phys = &face->phy_font; FT_Fixed x_scale, y_scale; FT_Size size = face->root.size; if ( anoutline_resolution ) *anoutline_resolution = phys->outline_resolution; if ( ametrics_resolution ) *ametrics_resolution = phys->metrics_resolution; x_scale = 0x10000L; y_scale = 0x10000L; if ( size ) { x_scale = FT_DivFix( size->metrics.x_ppem << 6, (FT_Long)phys->metrics_resolution ); y_scale = FT_DivFix( size->metrics.y_ppem << 6, (FT_Long)phys->metrics_resolution ); } if ( ametrics_x_scale ) *ametrics_x_scale = x_scale; if ( ametrics_y_scale ) *ametrics_y_scale = y_scale; return FT_Err_Ok; } static const FT_Service_PfrMetricsRec pfr_metrics_service_rec = { pfr_get_metrics, /* get_metrics */ pfr_face_get_kerning, /* get_kerning */ pfr_get_advance /* get_advance */ }; /* * SERVICE LIST * */ static const FT_ServiceDescRec pfr_services[] = { { FT_SERVICE_ID_PFR_METRICS, &pfr_metrics_service_rec }, { FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_PFR }, { NULL, NULL } }; FT_CALLBACK_DEF( FT_Module_Interface ) pfr_get_service( FT_Module module, const FT_String* service_id ) { FT_UNUSED( module ); return ft_service_list_lookup( pfr_services, service_id ); } FT_CALLBACK_TABLE_DEF const FT_Driver_ClassRec pfr_driver_class = { { FT_MODULE_FONT_DRIVER | FT_MODULE_DRIVER_SCALABLE, sizeof ( FT_DriverRec ), "pfr", 0x10000L, 0x20000L, NULL, /* module-specific interface */ NULL, /* FT_Module_Constructor module_init */ NULL, /* FT_Module_Destructor module_done */ pfr_get_service /* FT_Module_Requester get_interface */ }, sizeof ( PFR_FaceRec ), sizeof ( PFR_SizeRec ), sizeof ( PFR_SlotRec ), pfr_face_init, /* FT_Face_InitFunc init_face */ pfr_face_done, /* FT_Face_DoneFunc done_face */ NULL, /* FT_Size_InitFunc init_size */ NULL, /* FT_Size_DoneFunc done_size */ pfr_slot_init, /* FT_Slot_InitFunc init_slot */ pfr_slot_done, /* FT_Slot_DoneFunc done_slot */ pfr_slot_load, /* FT_Slot_LoadFunc load_glyph */ pfr_get_kerning, /* FT_Face_GetKerningFunc get_kerning */ NULL, /* FT_Face_AttachFunc attach_file */ NULL, /* FT_Face_GetAdvancesFunc get_advances */ NULL, /* FT_Size_RequestFunc request_size */ NULL, /* FT_Size_SelectFunc select_size */ }; /* END */