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

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

NAME

       Font::TTF::Utils - Utility functions to save fingers

DESCRIPTION

       Lots of useful functions to save my fingers, especially for trivial tables

FUNCTIONS

       The following functions are exported

   ($val, $pos) = TTF_Init_Fields ($str, $pos)
       Given a field description from the "DATA" section, creates an absolute entry in the fields associative array for the class

   TTF_Read_Fields($obj, $dat, $fields)
       Given a block of data large enough to account for all the fields in a table, processes the data block to convert to the values in the
       objects instance variables by name based on the list in the "DATA" block which has been run through "TTF_Init_Fields"

   TTF_Unpack($fmt, $dat)
       A TrueType types equivalent of Perls "unpack" function. Thus $fmt consists of type followed by an optional number of elements to read
       including *. The type may be one of:

	   c	   BYTE
	   C	   CHAR
	   f	   FIXED
	   F	   F2DOT14
	   l	   LONG
	   L	   ULONG
	   s	   SHORT
	   S	   USHORT
	   v	   Version number (FIXED)

       Note that "FUNIT", "FWORD" and "UFWORD" are not data types but units.

       Returns array of scalar (first element) depending on context

   $dat = TTF_Out_Fields($obj, $fields, $len)
       Given the fields table from "TTF_Init_Fields" writes out the instance variables from the object to the filehandle in TTF binary form.

   $dat = TTF_Pack($fmt, @data)
       The TrueType equivalent to Perl's "pack" function. See details of "TTF_Unpack" for how to work the $fmt string.

   ($num, $range, $select, $shift) = TTF_bininfo($num)
       Calculates binary search information from a number of elements

   TTF_word_utf8($str)
       Returns the UTF8 form of the 16 bit string, assumed to be in big endian order, including surrogate handling

   TTF_utf8_word($str)
       Returns the 16-bit form in big endian order of the UTF 8 string, including surrogate handling to Unicode.

   XML_hexdump($context, $dat)
       Dumps out the given data as a sequence of <data> blocks each 16 bytes wide

   XML_outhints
       Converts a binary string of hinting code into a textual representation

   make_circle($f, $cmap, [$dia, $sb, $opts])
       Adds a dotted circle to a font. This function is very configurable. The parameters passed in are:

       $f  Font to work with. This is required.

       $cmap
	   A cmap table (not the 'val' sub-element of a cmap) to add the glyph too. Optional.

       $dia
	   Optional diameter for the main circle. Defaults to 80% em

       $sb Side bearing. The left and right side-bearings are always the same. This value defaults to 10% em.

       There are various options to control all sorts of interesting aspects of the circle

       numDots
	   Number of dots in the circle

       numPoints
	   Number of curve points to use to create each dot

       uid Unicode reference to store this glyph under in the cmap. Defaults to 0x25CC

       pname
	   Postscript name to give the glyph. Defaults to uni25CC.

       -dRadius
	   Radius of each dot.

BUGS

       No known bugs

AUTHOR

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

perl v5.10.1							    2009-01-29						     Font::TTF::Utils(3pm)

Check Out this Related Man Page

Font::TTF::Loca(3)					User Contributed Perl Documentation					Font::TTF::Loca(3)

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, do not 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 v5.16.3							    2012-02-23							Font::TTF::Loca(3)
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