Text::Layout

WARNING: Some parts of the API are changing in incompatible ways. If you (want to) use this module for serious work please contact me.

Text::Layout provides methods for Pango style text formatting. Where possible the methods have identical names and (near) identical behaviour as their Pango counterparts.

Text::Layout uses backend modules to render the marked up text. Backends are included for:

• PDF::API2 (functional)
• PDF::Builder (functional)
• Markdown (minimal functionality)

Note that the Pango and Cairo backends are discontinued.

The package uses Text::Layout::FontConfig (included) to organize fonts by description.

If module HarfBuzz::Shaper is installed, Text::Layout can use it for text shaping.

Example

# Create a PDF document.
my $pdf = PDF::API2->new;   # or PDF::Builder->new
$pdf->default_page_size("a4");

# Set up page and get the text context.
my $page = $pdf->page;
my $ctx  = $page->text;

# Create a markup instance, passing the PDF context.
my $layout = Text::Layout->new($pdf);

# This example uses PDF corefonts only.
Text::Layout::FontConfig->register_corefonts;

$layout->set_font_description(Text::Layout::FontConfig->from_string("times 40"));
$layout->set_markup( q{The <i><span foreground="red">quick</span> <span size="20"><b>brown</b></span></i> fox} );

# Center text.
$layout->set_width(595);    # width of A4 page
$layout->set_alignment("center");

# Render it, passing the text context.
$layout->show( $x, $y, $ctx );

SEE ALSO

Description of the Pango Markup Language: https://docs.gtk.org/Pango/pango_markup.html#pango-markup.

Documentation of the Pango Layout class: https://docs.gtk.org/Pango/class.Layout.html.

FUTURE DIRECTIONS

Text::Layout was originally inspired by the Pango Markup Language and provided a Pango compatibility mode. However, both implementations have significantly diversed. As a result, the Pango compatibility mode will be removed in some future version.

INSTALLATION

To install this module, run the following commands:

perl Makefile.PL
make
make test
make install

SUPPORT AND DOCUMENTATION

Development of this module takes place on GitHub: https://github.com/sciurius/perl-Text-Layout.

You can find documentation for this module with the perldoc command.

perldoc Text::Layout

Please report any bugs or feature requests using the issue tracker on GitHub.

COPYRIGHT AND LICENCE

Copyright (C) 2019,2024 Johan Vromans

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