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# encoding: utf-8
#
# We've already seen one way of using text boxes with the <code>text_box</code>
# method. Turns out this method is just a convenience for using the
# <code>Prawn::Text::Box</code> class as it creates a new object and call
# <code>render</code> on it.
#
# Knowing that any extensions we add to <code>Prawn::Text::Box</code> will take
# effect when we use the <code>text_box</code> method. To add an extension all
# we need to do is append the <code>Prawn::Text::Box.extensions</code> array
# with a module.
#
require File.expand_path(File.join(File.dirname(__FILE__),
%w[.. example_helper]))
filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::ManualBuilder::Example.generate(filename) do
module TriangleBox
def available_width
height + 25
end
end
y_position = cursor - 10
width = 100
height = 100
Prawn::Text::Box.extensions << TriangleBox
stroke_rectangle([0, y_position], width, height)
text_box("A" * 100,
:at => [0, y_position],
:width => width,
:height => height)
Prawn::Text::Formatted::Box.extensions << TriangleBox
stroke_rectangle([200, y_position], width, height)
formatted_text_box([:text => "A" * 100, :color => "009900"],
:at => [200, y_position],
:width => width,
:height => height)
# Here we clear the extensions array
Prawn::Text::Box.extensions.clear
Prawn::Text::Formatted::Box.extensions.clear
end
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