PDF::API2::Basic::TTF::OldCmap - Character map table
This module is deprecated
Looks after the character map. The primary structure used for handling a cmap is the PDF::API2::Basic::TTF::Segarr which handles the segmented arrays of format 4 tables, and in a simpler form for format 0 tables.
Due to the complexity of working with segmented arrays, most of the handling of such arrays is via methods rather than via instance variables.
One important feature of a format 4 table is that it always contains a segment with a final address of 0xFFFF. If you are creating a table from scratch this is important (although PDF::API2::Basic::TTF::Segarr can work quite happily without it).
The instance variables listed here are not preceeded by a space due to their emulating structural information in the font.
Each subtables also has its own instance variables which are, again, not preceeded by a space.
The platform number for this subtable
The encoding number for this subtable
Gives the stored format of this subtable
Gives the version (or language) information for this subtable
This points to a PDF::API2::Basic::TTF::Segarr which contains the content of the particular subtable.
Reads the cmap into memory. Format 4 subtables read the whole subtable and fill in the segmented array accordingly.
Format 2 subtables are not read at all.
Given a Unicode value in the MS table (Platform 3, Encoding 1) locates that table and looks up the appropriate glyph number from it.
Finds the Microsoft Unicode table and sets the
mstable instance variable to it if found.
Returns the table it finds.
Writes out a cmap table to a filehandle. If it has not been read, then just copies from input file to output
Returns a reverse map of the table of given number or the Microsoft cmap. I.e. given a glyph gives the Unicode value for it.
Martin Hosken Martin_Hosken@sil.org. See PDF::API2::Basic::TTF::Font for copyright and licensing.