NAME

Prima::PS::PostScript - PostScript interface to Prima::Drawable

SYNOPSIS

Recommended usage:

            

              
              
use Prima::PS::Printer;
my $x = Prima::PS::File-> new( file => 'out.ps');
            
          

or

            

              
              
my $x = Prima::PS::FileHandle-> new( handle => \&STDOUT);
            
          

Low-level:

            

              
              
use Prima::PS::PostScript;
my $x = Prima::PS::PostScript-> create( onSpool => sub {
        open F, ">> ./test.ps";
        print F $_[1];
        close F;
});
            
          

Printing:

            

              
              
die "error:$@" unless $x-> begin_doc;
$x-> font-> size( 30);
$x-> text_out( "hello!", 100, 100);
$x-> end_doc;
            
          

DESCRIPTION

Implements the Prima library interface to PostScript level 2 document language. The module is designed to be compliant with the Prima::Drawable interface. All properties' behavior is as same as Prima::Drawable's except those described below.

Inherited properties

resolution

Can be set while the object is in the normal stage - cannot be changed if the document is opened. Applies to implementation of the fillPattern property and general pixel-to-point and vice versa calculations

alpha

alpha is not implemented

Specific properties

copies

The number of copies that the PS interpreter should print

grayscale

could be 0 or 1

pageSize

The physical page dimension, in points

pageMargins

Non-printable page area, an array of 4 integers: left, bottom, right, and top margins in points.

reversed

if 1, a 90 degrees rotated document layout is assumed

Internal methods

emit

Can be called for direct PostScript code injection. Example:

            

              
              
$x-> emit('0.314159 setgray');
$x-> bar( 10, 10, 20, 20);
            
          

pixel2point and point2pixel

Helpers for translation from pixels to points and vice versa.

fill & stroke

Wrappers for PS outline that are expected to be either filled or stroked. Apply colors, line, and fill styles if necessary.

spool

Prima::PS::PostScript is not responsible for the output of the generated document, it only calls the ::spool method when the document is closed through an ::end_doc call. By default discards the data. The Prima::PS::Printer class handles the spooling logic.

fonts

Calls Prima::Application::fonts and returns its output filtered so that only the fonts that support the iso10646-1 encoding are present. This effectively allows only unicode output.