diff options
Diffstat (limited to 'libfreetype/pfrdrivr.c')
| -rw-r--r-- | libfreetype/pfrdrivr.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/libfreetype/pfrdrivr.c b/libfreetype/pfrdrivr.c new file mode 100644 index 00000000..07ba9b4c --- /dev/null +++ b/libfreetype/pfrdrivr.c @@ -0,0 +1,168 @@ +/***************************************************************************/ +/* */ +/* 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 */ |