font::ttf::os_2(3pm) [debian man page]
Font::TTF::OS_2(3pm) User Contributed Perl Documentation Font::TTF::OS_2(3pm) NAME
Font::TTF::OS_2 - the OS/2 table in a TTF font DESCRIPTION
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. INSTANCE VARIABLES
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 & 3 of the table are supported. Notice also that the Panose variable has been broken down into its elements. METHODS
$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. BUGS
None known AUTHOR
Martin Hosken Martin_Hosken@sil.org. See Font::TTF::Font for copyright and licensing. perl v5.10.1 2009-01-21 Font::TTF::OS_2(3pm)
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Font::TTF::Loca(3pm) User Contributed Perl Documentation Font::TTF::Loca(3pm) NAME
Font::TTF::Loca - the Locations table, which is intimately tied to the glyf table DESCRIPTION
The location table holds the directory of locations of each glyph within the glyf table. Due to this relationship and the unimportance of the actual locations when it comes to holding glyphs in memory, reading the location table results in the creation of glyph objects for each glyph and stores them here. So if you are looking for glyphs, don't look in the "glyf" table, look here instead. Things get complicated if you try to change the glyph list within the one table. The recommendation is to create another clean location object to replace this table in the font, ensuring that the old table is read first and to transfer or copy glyphs across from the read table to the new table. INSTANCE VARIABLES
The instance variables do not start with a space glyphs An array of glyph objects for each glyph. glyphtype A string containing the class name to create for each new glyph. If empty, defaults to Font::TTF::Glyph. METHODS
$t->new Creates a new location table making sure it has a glyphs array $t->read Reads the location table creating glyph objects (Font::TTF::Glyph) for each glyph allowing their later reading. $t->out($fh) Writes the location table out to $fh. Notice that not having read the location table implies that the glyf table has not been read either, so the numbers in the location table are still valid. Let's hope that "maxp/numGlyphs" and "head/indexToLocFmt" haven't changed otherwise we are in big trouble. The function uses the OUTLOC location in the glyph calculated when the glyf table was attempted to be output. $t->out_xml($context, $depth) No need to output a loca table, this is dynamically generated $t->glyphs_do(&func) Calls func for each glyph in this location table in numerical order: &func($glyph, $glyph_num) BUGS
None known AUTHOR
Martin Hosken Martin_Hosken@sil.org. See Font::TTF::Font for copyright and licensing. perl v5.10.1 2009-01-21 Font::TTF::Loca(3pm)