Text box drawing using the Unicode box symbols
Perl
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README

NAME
    Text::UnicodeBox - Text box drawing using the Unicode box symbols

SYNOPSIS
      use Text::UnicodeBox;
      use Text::UnicodeBox::Control qw(:all);
  
      my $box = Text::UnicodeBox->new();
      $box->add_line(
        BOX_START( style => 'double', top => 'double', bottom => 'double' ), '   ', BOX_END(),
        '    ',
        BOX_START( style => 'heavy', top => 'heavy', bottom => 'heavy' ), '   ', BOX_END()
      );
      print $box->render();

      # Renders:
      # ╔═══╗    ┏━━━┓
      # ║   ║    ┃   ┃
      # ╚═══╝    ┗━━━┛

DESCRIPTION
    Text::UnicodeBox is a low level box drawing interface. You'll most
    likely want to use one of the higher level modules such as
    Text::UnicodeBox::Table.

    The unicode box symbol table
    (<http://en.wikipedia.org/wiki/Box-drawing_character>) is a fairly
    robust set of symbols that allow you to draw lines and boxes with
    monospaced fonts. This module allows you to focus on the content of the
    boxes you need to draw and mostly ignore how to draw a good looking box
    with proper connections between all the lines.

    The low level approach is line-based. A box object is created,
    "add_line" is called for each line of content you'd like to render, and
    "render" is called to complete the box.

    Output is built up over time, which allows you to stream the output
    rather then buffering it and printing it in one go.

METHODS
  new (%params)
    Create a new instance. Provide arguments as a list. Valid arguments are:

    whitespace_character (default: ' ')
        When the box renderer needs to pad the output of the interstitial
        lines of output, this character will be used. Defaults to a simple
        space.

    fetch_box_character
        Provide a subroutine which will be used instead of the
        "fetch_box_character" in Text::UnicodeBox::Utility. This allows the
        user granular control over what symbols will be used for box
        drawing. The subroutine will be called with a hash with any or all
        of the following keys: 'left', 'right', up', 'down', 'vertical' or
        'horizontal'. The value of each will be either '1' (default style),
        'light', 'heavy', 'single' or 'double'.

        Return a single width character or return undefined and a '?' will
        be used for rendering.

  buffer
    Return the current buffer of rendered text.

  add_line (@parts)
    Pass a list of parts for a rendered line of output. You may pass either
    a string, a Text::UnicodeBox::Control or a Text::UnicodeBox::Text
    object. Strings will be transformed into the latter. The line will be
    rendered to the buffer.

  render
    Complete the rendering of the box, drawing any final lines needed to
    close up the drawing.

    Returns the buffer

DEVELOPMENT
    This module is being developed via a git repository publicly avaiable at
    http://github.com/ewaters/Text-UnicodeBox. I encourage anyone who is
    interested to fork my code and contribute bug fixes or new features, or
    just have fun and be creative.

COPYRIGHT
    Copyright (c) 2012 Eric Waters and Shutterstock Images
    (http://shutterstock.com). All rights reserved. This program is free
    software; you can redistribute it and/or modify it under the same terms
    as Perl itself.

    The full text of the license can be found in the LICENSE file included
    with this module.

AUTHOR
    Eric Waters <ewaters@gmail.com>