XML:TSFF

You can visualize the data in OniBrowser. Be sure to also install the XNA package from the Microsoft site.

File structure

TSFF file
 |
 +-- TSFF instance
      |
      +-- TSFT instance (x15, for different styles and sizes)
           |
           +-- TSGA instance

List of available Tahoma sizes and styles.

id 2, FontSize 7, FontStyle 1

id 3, FontSize 7, FontStyle 0

id 4, FontSize 7, FontStyle 2

id 5, FontSize 14, FontStyle 1

id 6, FontSize 14, FontStyle 0

id 7, FontSize 14, FontStyle 2

id 8, FontSize 10, FontStyle 1

id 9, FontSize 10, FontStyle 0

id 10, FontSize 10, FontStyle 2

id 11, FontSize 12, FontStyle 1

id 12, FontSize 12, FontStyle 0

id 13, FontSize 12, FontStyle 2

id 14, FontSize 9, FontStyle 1

id 15, FontSize 9, FontStyle 0

id 16, FontSize 9, FontStyle 2

TSFF tags

XML tag	content type	description
<TSFF>	-	parent tag
<Language>	link	link to TSFL file
<Fonts>	-	parent tag, instance link list
<Link>		# + instance number

TSFT tags

XML tag	content type	description
<TSFT>
<FontSize>	int16
<FontStyle>	int16	0 - normal font 1 - bold font 2 - italic font
<AscenderHeight>	int16
<DescenderHeight>	int16
<LeadingHeight>	int16
<Offset_001A>	int16
<Glyphs>		parent tag, array
<Link>
<GlyphBitmaps>		parent tag, array
<Int32>	int32	Has to be converted back to 4 bytes, each byte can be read as a hex color code for a pixel

TSGA tags

XML tag	content type	description
<TSGA>
<Glyphs>		glyph array for character codes 0-255 (ASCII)
<TSGAGlyph>
<Index>	int16
<Width>	int16	What is the difference of Width and GlyphWidth?? Picture please.
<GlyphWidth>	int16
<GlyphHeight>	int16
<GlyphXOrigin>	int16
<GlyphYOrigin>	int16
<GlyphBitmapOffset>	int32?

Every TSGA file contains 256 elements. One element stands for one of the 256 signs of the ASCII table. The first 32 signs are reserved control characters, so these elements are always complete zero.

A glyph is basically a monochrome bitmap width * height pixels in size. Each pixel is stored in one byte in the TSFT file (fonts are antialiased so shades of gray are needed rather than storing each pixel in one bit) so each element in the TSFT file contains 4 pixels. Rows of pixels are not 4 bytes aligned so a row can start inside an element.