ref: d0ab3a0dd8f6355b3603d0fb04043a9ae867639b
dir: /libfreetype/pfrdrivr.c/
/***************************************************************************/ /* */ /* pfrdrivr.c */ /* */ /* FreeType PFR driver interface (body). */ /* */ /* Copyright 2002 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_INTERNAL_PFR_H #include "pfrdrivr.h" #include "pfrobjs.h" static FT_Error pfr_get_kerning( PFR_Face face, FT_UInt left, FT_UInt right, FT_Vector *avector ) { FT_Error error; error = pfr_face_get_kerning( face, left, right, avector ); if ( !error ) { PFR_PhyFont phys = &face->phy_font; /* 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, phys->outline_resolution, phys->metrics_resolution ); if ( avector->y != 0 ) avector->y = FT_MulDiv( avector->x, phys->outline_resolution, phys->metrics_resolution ); } } return error; } static FT_Error pfr_get_advance( PFR_Face face, FT_UInt gindex, FT_Pos *aadvance ) { FT_Error error = FT_Err_Bad_Argument; *aadvance = 0; if ( face ) { PFR_PhyFont phys = &face->phy_font; if ( gindex < phys->num_chars ) { *aadvance = phys->chars[ gindex ].advance; error = 0; } } return error; } static FT_Error pfr_get_metrics( PFR_Face face, FT_UInt *aoutline_resolution, FT_UInt *ametrics_resolution, FT_Fixed *ametrics_x_scale, FT_Fixed *ametrics_y_scale ) { PFR_PhyFont phys = &face->phy_font; FT_Fixed x_scale, y_scale; FT_Size size = face->root.size; if ( aoutline_resolution ) *aoutline_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, phys->metrics_resolution ); y_scale = FT_DivFix( size->metrics.y_ppem << 6, phys->metrics_resolution ); } if ( ametrics_x_scale ) *ametrics_x_scale = x_scale; if ( ametrics_y_scale ) *ametrics_y_scale = y_scale; return 0; } FT_CALLBACK_TABLE_DEF const FT_PFR_ServiceRec pfr_service_rec = { (FT_PFR_GetMetricsFunc) pfr_get_metrics, (FT_PFR_GetKerningFunc) pfr_get_kerning, (FT_PFR_GetAdvanceFunc) pfr_get_advance }; 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, (FT_PFR_Service) &pfr_service_rec, /* format interface */ (FT_Module_Constructor)NULL, (FT_Module_Destructor) NULL, (FT_Module_Requester) NULL }, sizeof( PFR_FaceRec ), sizeof( PFR_SizeRec ), sizeof( PFR_SlotRec ), (FT_Face_InitFunc) pfr_face_init, (FT_Face_DoneFunc) pfr_face_done, (FT_Size_InitFunc) NULL, (FT_Size_DoneFunc) NULL, (FT_Slot_InitFunc) pfr_slot_init, (FT_Slot_DoneFunc) pfr_slot_done, (FT_Size_ResetPointsFunc) NULL, (FT_Size_ResetPixelsFunc) NULL, (FT_Slot_LoadFunc) pfr_slot_load, (FT_Face_GetKerningFunc) pfr_get_kerning, (FT_Face_AttachFunc) 0, (FT_Face_GetAdvancesFunc) 0 }; /* END */