diff options
Diffstat (limited to 'src/pfr/pfrdrivr.c')
| -rw-r--r-- | src/pfr/pfrdrivr.c | 104 |
1 files changed, 102 insertions, 2 deletions
diff --git a/src/pfr/pfrdrivr.c b/src/pfr/pfrdrivr.c index a4fcc420..c0697f5f 100644 --- a/src/pfr/pfrdrivr.c +++ b/src/pfr/pfrdrivr.c @@ -19,10 +19,110 @@ #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 ) + { + FT_Error error = 0; + 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; + } + + + 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 = { @@ -36,7 +136,7 @@ 0x10000L, 0x20000L, - 0, /* format interface */ + (FT_PFR_Service) &pfr_service_rec, /* format interface */ (FT_Module_Constructor)NULL, (FT_Module_Destructor) NULL, @@ -58,7 +158,7 @@ (FT_Size_ResetPixelsFunc) NULL, (FT_Slot_LoadFunc) pfr_slot_load, - (FT_Face_GetKerningFunc) pfr_face_get_kerning, + (FT_Face_GetKerningFunc) pfr_get_kerning, (FT_Face_AttachFunc) 0, (FT_Face_GetAdvancesFunc) 0 }; |