25 Aug 2016 01:26:48 UTC
- Distribution: Font-TTF
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Font::TTF::Coverage - Opentype coverage and class definition objects
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:
A boolean to indicate whether this table is a coverage table (TRUE) or a class definition (FALSE)
A hash of glyph ids against values (either coverage index or class value)
The storage format used is given here, but is recalculated when the table is written out.
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.
Maximum class value in a class table.
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.
Reads the coverage/class table from the given file handle
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.
Adds a glyph id to the coverage or class table. Returns the index or class number of the glyphid added.
Returns a vector of all the glyph ids covered by this coverage table or class
Sorts the coverage table so that indexes are in ascending order of glyphid. Returns a map such that $map[$new_index]=$old_index.
Outputs this coverage/class in XML
Martin Hosken http://scripts.sil.org/FontUtils.
Copyright (c) 1998-2016, SIL International (http://www.sil.org)
This module is released under the terms of the Artistic License 2.0. For details, see the full text of the license in the file LICENSE.
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