prawnpdf/prawn

# frozen_string_literal: true

require 'prawn/manual_builder'

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

  text do
    prose <<~TEXT
      Rotating text is best avoided on free flowing text, so this example
      will only use the <code>text_box</code> method as we can have much more
      control over its output.

      To rotate text all we need to do is use the <code>:rotate</code> option
      passing an angle in degrees and an optional <code>:rotate_around</code>
      to indicate the origin of the rotation (the default is
      <code>:upper_left</code>).
    TEXT
  end

  example new_page: true do
    width = 100
    height = 60
    angle = 30
    x = 200
    y = cursor - 30

    stroke_rectangle [0, y], width, height
    text_box(
      'This text was not rotated',
      at: [0, y],
      width: width,
      height: height,
    )

    stroke_rectangle [0, y - 100], width, height
    text_box(
      'This text was rotated around the center',
      at: [0, y - 100],
      width: width,
      height: height,
      rotate: angle,
      rotate_around: :center,
    )

    %i[lower_left upper_left lower_right upper_right].each_with_index do |corner, index|
      y -= 100 if index == 2
      stroke_rectangle [x + ((index % 2) * 200), y], width, height
      text_box(
        "This text was rotated around the #{corner} corner.",
        at: [x + ((index % 2) * 200), y],
        width: width,
        height: height,
        rotate: angle,
        rotate_around: corner,
      )
    end
  end
end