prawnpdf/prawn

# frozen_string_literal: true

require 'prawn/manual_builder'

Prawn::ManualBuilder::Chapter.new do
  title 'Alignment'

  text do
    prose <<~TEXT
      Horizontal text alignment can be achieved by supplying the
      <code>:align</code> option to the text methods. Available options are
      <code>:left</code> (default), <code>:right</code>, <code>:center</code>,
      and <code>:justify</code>.

      Vertical text alignment can be achieved using the <code>:valign</code>
      option with the text methods. Available options are <code>:top</code>
      (default), <code>:center</code>, and <code>:bottom</code>.

      Both forms of alignment will be evaluated in the context of the current
      bounding_box.
    TEXT
  end

  example new_page: true do
    text 'This text should be left aligned'
    text 'This text should be centered', align: :center
    text 'This text should be right aligned', align: :right

    y = cursor - 20
    bounding_box([0, y], width: 250, height: 220) do
      text 'This text is flowing from the left. ' * 4

      move_down 15
      text 'This text is flowing from the center. ' * 3, align: :center

      move_down 15
      text 'This text is flowing from the right. ' * 4, align: :right

      move_down 15
      text 'This text is justified. ' * 6, align: :justify
      transparent(0.5) { stroke_bounds }
    end

    bounding_box([270, y], width: 250, height: 220) do
      text 'This text should be vertically top aligned'
      text 'This text should be vertically centered', valign: :center
      text 'This text should be vertically bottom aligned', valign: :bottom
      transparent(0.5) { stroke_bounds }
    end
  end
end