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       Prima::PS::Fonts - PostScript device fonts metrics


               use Prima;
               use Prima::PS::Fonts;


       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.


                   $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