Author image Andy Wardley


Template::Plugin::GD::Constants - Interface to GD module constants


    [% USE gdc = GD.Constants %]

    # --> the constants gdc.gdBrushed, gdc.gdSmallFont, gdc.GD_CMP_IMAGE
    #     are now available


    [% FILTER null;
        USE gdc = GD.Constants;
        USE im  = GD.Image(200,100);
        black = im.colorAllocate(0  ,0,  0);
        red   = im.colorAllocate(255,0,  0);
        r = im.string(gdc.gdLargeFont, 10, 10, "Large Red Text", red);
        im.png | stdout(1);


The GD.Constants plugin provides access to the various GD module's constants (such as gdBrushed, gdSmallFont, gdTransparent, GD_CMP_IMAGE etc). When is used in perl it exports various contstants into the caller's namespace. This plugin makes those exported constants available as template variables.

See Template::Plugin::GD::Image and GD for further examples and details.


Thomas Boutell wrote the GD graphics library.

Lincoln D. Stein wrote the Perl GD modules that interface to it.

Craig Barratt <> wrote the original GD plugins for the Template Toolkit (2001).

Andy Wardley <> extracted them from the TT core into a separate distribution for TT version 2.15.


Copyright (C) 2001 Craig Barratt <>, 2006 Andy Wardley <>.

The interface is copyright 1995-2000, Lincoln D. Stein.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.


Template::Plugin::GD, Template::Plugin::GD::Image, GD