rgraves
/
freetype2
forked from minhngoc25a/freetype2
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[gf] Define `attach_file' function in `gf_driver_class'. 

* src/gf/gfdrivr.c: Define `attach_file' function, `TFM_Read_Metrics'
in `gf_driver_class' to extract font metric information from `tfm'
file using a new `TFM' auxiliary module.
This commit is contained in:
Parth Wazurkar 2018-07-27 01:04:35 +05:30
parent 0f41489a09
commit b36649fd86
1 changed files with 72 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
src/gf/gfdrivr.c
View File

@ -21,6 +21,7 @@
#include FT_INTERNAL_STREAM_H
#include FT_INTERNAL_OBJECTS_H
#include FT_TRUETYPE_IDS_H
#include FT_INTERNAL_TFM_H
#include FT_SERVICE_GF_H
#include FT_SERVICE_FONT_FORMAT_H
@ -431,6 +432,76 @@
return error;
}
FT_LOCAL_DEF( void )
TFM_Done_Metrics( FT_Memory memory,
TFM_FontInfo fi )
{
FT_FREE(fi->width);
FT_FREE(fi->height);
FT_FREE(fi->depth);
FT_FREE( fi );
}
/* parse a TFM metrics file */
FT_LOCAL_DEF( FT_Error )
TFM_Read_Metrics( FT_Face gf_face,
FT_Stream stream )
{
TFM_Service tfm;
FT_Memory memory = stream->memory;
TFM_ParserRec parser;
TFM_FontInfo fi = NULL;
FT_Error error = FT_ERR( Unknown_File_Format );
GF_Face face = (GF_Face)gf_face;
GF_Glyph gf_glyph= face->gf_glyph;
if ( face->tfm_data )
{
FT_TRACE1(( "TFM_Read_Metrics:"
" Freeing previously attached metrics data.\n" ));
TFM_Done_Metrics( memory, (TFM_FontInfo)face->tfm_data );
face->tfm_data = NULL;
}
if ( FT_NEW( fi ) )
goto Exit;
tfm = (TFM_Service)face->tfm;
if ( tfm->init )
{
error = tfm->init( &parser,
memory,
stream );
if ( !error )
{
parser.FontInfo = fi;
parser.user_data = gf_glyph;
error = tfm->parse_metrics( &parser );
tfm->done( &parser );
}
}
if ( !error )
{
/* Modify GF_Glyph data according to TFM metric values */
/* TO-DO */
face->tfm_data = fi;
fi = NULL;
}
Exit:
if ( fi )
TFM_Done_Metrics( memory, fi );
return error;
}
/*
*
* SERVICES LIST
@ -487,7 +558,7 @@
GF_Glyph_Load, /* FT_Slot_LoadFunc load_glyph */
NULL, /* FT_Face_GetKerningFunc get_kerning */
NULL, /* FT_Face_AttachFunc attach_file */
TFM_Read_Metrics, /* FT_Face_AttachFunc attach_file */
NULL, /* FT_Face_GetAdvancesFunc get_advances */
GF_Size_Request, /* FT_Size_RequestFunc request_size */