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| author | Parth Wazurkar <parthwazurkar@gmail.com> | 2018-07-27 01:04:35 +0530 |
|---|---|---|
| committer | Parth Wazurkar <parthwazurkar@gmail.com> | 2018-07-30 23:47:51 +0530 |
| commit | b36649fd86e3a9fa39cdbf12b76923789ce11a61 (patch) | |
| tree | 5062b2f9f5326317a95d3b1a8d49d71402b34375 | |
| parent | 0f41489a0965ad34808f68a2a5d2554446f0030a (diff) | |
| download | freetype2-b36649fd86e3a9fa39cdbf12b76923789ce11a61.tar.gz | |
[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.
| -rw-r--r-- | src/gf/gfdrivr.c | 73 |
1 files changed, 72 insertions, 1 deletions
diff --git a/src/gf/gfdrivr.c b/src/gf/gfdrivr.c index bae1d61ea..fbbc7aa8c 100644 --- a/src/gf/gfdrivr.c +++ b/src/gf/gfdrivr.c @@ -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 */ |