RE: [ft] Creating an [OT]TF font from BDF font
Turner, David <DTurner <at> nds.com>
2005-12-09 10:02:18 GMT
Hi George,
I think it's a nice proposal, but I'd like to provide an alternative.
The idea being that to avoid two subtables indirections, as well as
the separation of properties/non-properties you made, since I believe
it might be important to re-create a BDF font file with atoms listed
in the correct order:
----------------------------------cut here-------------------------------
the format of the 'BDF' SFNT table is the following:
USHORT version : 'BDF' table version number, must be 0x0001
USHORT strikeCount : number of strikes in table
USHORT stringTable : offset (from start of table) to string table
note that the string table ends at the end
of the BDF table. Each string is 8-bit and
0-terminated.
followed by an array of 'strikeCount' descriptors that look like:
USHORT ppem : vertical pixels-per-EM for this strike
USHORT num_items : number of items (properties and atoms), max is 255
this array is followed by 'strikeCount' value sets. Each "value set" is
an array of (num_items) items that look like:
USHORT item_name : offset in string table to item name
USHORT item_type : item type: 0 => non-property (e.g. COMMENT, FONTBOUNDINGBOX, etc..)
1 => string property
2 => int32 property
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