PDF::API3::Compat::API2::Basic::TTF::OS_2 - the OS/2 table in a TTF font The OS/2 table has two versions and forms, one an extension of the other. This module supports both forms and the switching between them. No other variables than those in table and those in the standard: Version xAvgCharWidth usWeightClass usWidthClass fsType ySubscriptXSize ySubScriptYSize ySubscriptXOffset ySubscriptYOffset ySuperscriptXSize ySuperscriptYSize ySuperscriptXOffset ySuperscriptYOffset yStrikeoutSize yStrikeoutPosition sFamilyClass bFamilyType bSerifStyle bWeight bProportion bContrast bStrokeVariation bArmStyle bLetterform bMidline bXheight ulUnicodeRange1 ulUnicodeRange2 ulUnicodeRange3 ulUnicodeRange4 achVendID fsSelection usFirstCharIndex usLastCharIndex sTypoAscender sTypoDescender sTypoLineGap usWinAscent usWinDescent ulCodePageRange1 ulCodePageRange2 xHeight CapHeight defaultChar breakChar maxLookups Notice that versions 0, 1 & 2 of the table are supported. Notice also that the Panose variable has been broken down into its elements.

$t->read
Reads in the various values from disk (see details of OS/2 table)

$t->out($fh)
Writes the table to a file either from memory or by copying.

$t->XML_element($context, $depth, $key, $value)
Tidies up the hex values to output them in hex

$t->XML_end($context, $tag, %attrs)
Now handle them on the way back in

$t->update
Updates the OS/2 table by getting information from other sources: Updates the "firstChar" and "lastChar" values based on the MS table in the cmap. Updates the sTypoAscender, sTypoDescender & sTypoLineGap to be the same values as Ascender, Descender and Linegap from the hhea table (assuming it is dirty) and also sets usWinAscent to be the sum of Ascender+Linegap and usWinDescent to be the negative of Descender. None known Martin Hosken Martin_Hosken@sil.org. See PDF::API3::Compat::API2::Basic::TTF::Font for copyright and licensing.