font::ttf::loca(3pm) [debian man page]

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)

Font::TTF::Coverage(3pm)				User Contributed Perl Documentation				  Font::TTF::Coverage(3pm)

NAME

       Font::TTF::Coverage - Opentype coverage and class definition objects

DESCRIPTION

       Coverage tables and class definition objects are virtually identical concepts in OpenType. Their difference comes purely in their storage.
       Therefore we can say that a coverage table is a class definition in which the class definition for each glyph is the corresponding index in
       the coverage table. The resulting data structure is that a Coverage table has the following fields:

       cover
	   A boolean to indicate whether this table is a coverage table (TRUE) or a class definition (FALSE)

       val A hash of glyph ids against values (either coverage index or class value)

       fmt The storage format used is given here, but is recalculated when the table is written out.

       count
	   A count of the elements in a coverage table for use with add. Each subsequent addition is added with the current count and increments
	   the count.

METHODS

   new($isCover [, vals])
       Creates a new coverage table or class definition table, depending upon the value of $isCover. if $isCover then vals may be a list of glyphs
       to include in order.  If no $isCover, then vals is a hash of glyphs against class values.

   read($fh)
       Reads the coverage/class table from the given file handle

   out($fh, $state)
       Writes the coverage/class table to the given file handle. If $state is 1 then the output string is returned rather than being output to a
       filehandle.

   $c->add($glyphid[, $class])
       Adds a glyph id to the coverage table incrementing the count so that each subsequent addition has the next sequential number. Returns the
       index number of the glyphid added

   $c->signature
       Returns a vector of all the glyph ids covered by this coverage table or class

   @map=$c->sort
       Sorts the coverage table so that indexes are in ascending order of glyphid.  Returns a map such that $map[$new_index]=$old_index.

   $c->out_xml($context)
       Outputs this coverage/class in XML

AUTHOR

       Martin Hosken Martin_Hosken@sil.org. See Font::TTF::Font for copyright and licensing.

perl v5.10.1							    2011-02-25						  Font::TTF::Coverage(3pm)