PDF::API2::Basic::TTF::Table(3pm) - phpMan

PDF::API2::Basic::TTF::Table(3pUser Contributed Perl DocumentatiPDF::API2::Basic::TTF::Table(3pm)



NAME
       PDF::API2::Basic::TTF::Table - Superclass for tables and used for tables we don't have a
       class for

DESCRIPTION
       Looks after the purely table aspects of a TTF table, such as whether the table has been
       read before, locating the file pointer, etc. Also copies tables from input to output.

INSTANCE VARIABLES
       Instance variables start with a space

       read
           Flag which indicates that the table has already been read from file.

       dat Allows the creation of unspecific tables. Data is simply output to any font file being
           created.

       INFILE
           The read file handle

       OFFSET
           Location of the file in the input file

       LENGTH
           Length in the input directory

       CSUM
           Checksum read from the input file's directory

       PARENT
           The PDF::API2::Basic::TTF::Font that table is part of

METHODS
       PDF::API2::Basic::TTF::Table->new(%parms)

       Creates a new table or subclass. Table instance variables are passed in at this point as
       an associative array.

       $t->read

       Reads the table from the input file. Acts as a superclass to all true tables.  This method
       marks the table as read and then just sets the input file pointer but does not read any
       data. If the table has already been read, then returns "undef" else returns $self

       $t->read_dat

       Reads the table into the "dat" instance variable for those tables which don't know any
       better

       $t->out($fh)

       Writes out the table to the font file. If there is anything in the "data" instance
       variable then this is output, otherwise the data is copied from the input file to the
       output

       $t->out_xml($context)

       Outputs this table in XML format. The table is first read (if not already read) and then
       if there is no subclass, then the data is dumped as hex data

       $t->XML_element

       Output a particular element based on its contents.

       $t->XML_end($context, $tag, %attrs)

       Handles the default type of <data> for those tables which aren't subclassed

       $t->dirty($val)

       This sets the dirty flag to the given value or 1 if no given value. It returns the value
       of the flag

       $t->update

       Each table knows how to update itself. This consists of doing whatever work is required to
       ensure that the memory version of the table is consistent and that other parameters in
       other tables have been updated accordingly.  I.e. by the end of sending "update" to all
       the tables, the memory version of the font should be entirely consistent.

       Some tables which do no work indicate to themselves the need to update themselves by
       setting isDirty above 1. This method resets that accordingly.

       $t->empty

       Clears a table of all data to the level of not having been read

       $t->release

       Releases ALL of the memory used by this table, and all of its component/child objects.
       This method is called automatically by '"PDF::API2::Basic::TTF::Font->release"' (so you
       don't have to call it yourself).

       NOTE, that it is important that this method get called at some point prior to the actual
       destruction of the object.  Internally, we track things in a structure that can result in
       circular references, and without calling '"release()"' these will not properly get cleaned
       up by Perl.  Once this method has been called, though, don't expect to be able to do
       anything with the "PDF::API2::Basic::TTF::Table" object; it'll have no internal state
       whatsoever.

       Developer note:  As part of the brute-force cleanup done here, this method will throw a
       warning message whenever unexpected key values are found within the
       "PDF::API2::Basic::TTF::Table" object.  This is done to help ensure that any unexpected
       and unfreed values are brought to your attention so that you can bug us to keep the module
       updated properly; otherwise the potential for memory leaks due to dangling circular
       references will exist.

BUGS
       No known bugs

AUTHOR
       Martin Hosken Martin_Hosken AT sil.org. See PDF::API2::Basic::TTF::Font for copyright and
       licensing.



perl v5.10.0                                2008-05-04          PDF::API2::Basic::TTF::Table(3pm)

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