Template::Plugin::GD::Image - Interface to GD Graphics Library

       Thomas Boutell wrote the GD graphics library.

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

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

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

       Copyright (C) 2001 Craig Barratt <craig@arraycomm.com>, 2006 Andy Wardley <abw@cpan.org>.

       The GD.pm 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.

       The GD.Image plugin provides an interface to GD.pm's GD::Image class.  The GD::Image class is the main
       interface to GD.pm.

       It is very important that no extraneous template output appear before or after the image.  Since some
       methods return values that would otherwise appear in the output, it is recommended that GD.Image code be
       wrapped in a null filter.  The methods that produce the final output (eg, png, jpeg, gd etc) can then
       explicitly make their output appear by using the stdout filter, with a non-zero argument to force binary
       mode (required for non-modern operating systems).

       See GD for a complete description of the GD library and all the methods that can be called via the
       GD.Image plugin.  See Template::Plugin::GD::Constants for a plugin that allows you access to GD.pm's
       constants.

           [% 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);
              END;
           -%]

           [% FILTER null;
               USE im = GD.Image(100,100);
               # allocate some colors
               black = im.colorAllocate(0,   0, 0);
               red   = im.colorAllocate(255,0,  0);
               blue  = im.colorAllocate(0,  0,  255);
               # Draw a blue oval
               im.arc(50,50,95,75,0,360,blue);
               # And fill it with red
               im.fill(50,50,red);
               # Output binary image in PNG format
               im.png | stdout(1);
              END;
           -%]

           [% FILTER null;
               USE im   = GD.Image(100,100);
               USE c    = GD.Constants;
               USE poly = GD.Polygon;

               # allocate some colors
               white = im.colorAllocate(255,255,255);
               black = im.colorAllocate(0,  0,  0);
               red   = im.colorAllocate(255,0,  0);
               blue  = im.colorAllocate(0,  0,255);
               green = im.colorAllocate(0,  255,0);

               # make the background transparent and interlaced
               im.transparent(white);
               im.interlaced('true');

               # Put a black frame around the picture
               im.rectangle(0,0,99,99,black);

               # Draw a blue oval
               im.arc(50,50,95,75,0,360,blue);

               # And fill it with red
               im.fill(50,50,red);

               # Draw a blue triangle
               poly.addPt(50,0);
               poly.addPt(99,99);
               poly.addPt(0,99);
               im.filledPolygon(poly, blue);

               # Output binary image in PNG format
               im.png | stdout(1);
              END;
           -%]

       Template::Plugin::GD::Image - Interface to GD Graphics Library

       Template::Plugin::GD, GD

perl v5.36.0                                       2022-08-28                   Template::Plugin::GD::Image(3pm)

           [% USE im = GD.Image(width, height) %]