NAME
Prima::PS::Fonts - PostScript device fonts metrics
SYNOPSIS
use Prima;
use Prima::PS::Fonts;
DESCRIPTION
This module primary use is to be invoked from Prima::PS::Drawable
module. Assumed that some common fonts like Times and Courier are
supported by PS interpreter, and it is assumed that typeface is
preserved more-less the same, so typesetting based on font’s a-b-c
metrics can be valid. 35 font files are supplied with 11 font
families. Font files with metrics located into ’fonts’ subdirectory.
query_metrics( $fontName)
Returns font metric hash with requested font data, uses
$defaultFontName if give name is not found. Metric hash is the same
as Prima::Types::Font record, plus 3 extra fields: ’docname’
containing font name ( equals always to ’name’), ’chardata’ - hash
of named glyphs, ’charheight’ - the height that ’chardata’ is
rendered to. Every hash entry in ’chardata’ record contains four
numbers - suggested character index and a, b and c glyph dimensions
with height equals ’charheight’.
enum_fonts( $fontFamily)
Returns font records for given family, or all families perpesented
by one member, if no family name given. If encoding specified,
returns only the fonts with the encoding given. Compliant to
Prima::Application::fonts interface.
files & enum_families
Hash with paths to font metric files. File names not necessarily
should be as font names, and it is possible to override font name
contained in the file just by specifying different font key - this
case will be recognized on loading stage and loaded font structure
patched correspondingly.
Example:
$Prima::PS::Fonts::files{Standard Symbols} = $Prima::PS::Fonts::files{Symbol};
$Prima::PS::Fonts::files{'Device-specific symbols, set 1'} = 'my/devspec/data.1';
$Prima::PS::Fonts::files{'Device-specific symbols, set 2'} = 'my/devspec/data.2';
$Prima::PS::Fonts::enum_families{DevSpec} = 'Device-specific symbols, set 1';
font_pick( $src, $dest, %options)
Merges two font records using Prima::Drawable::font_match, picks
the result and returns new record. $variablePitchName and
$fixedPitchName used on this stage.
Options can include the following fields:
- resolution - vertical resolution. The default value is taken from
font resolution.
enum_family( $fontFamily)
Returns font names that are presented in given family