prawnpdf/prawn

# frozen_string_literal: true

require 'prawn/manual_builder'

Prawn::ManualBuilder::Chapter.new do
  title 'Text Box Overflow'

  text do
    prose <<~TEXT
      The <code>text_box</code> method accepts both <code>:width</code> and
      <code>:height</code> options. So what happens if the text doesn't fit the
      box?

      The default behavior is to truncate the text but this can be changed with
      the <code>:overflow</code> option. Available modes are
      <code>:expand</code> (the box will increase to fit the text) and
      <code>:shrink_to_fit</code> (the text font size will be shrunk to fit).

      If <code>:shrink_to_fit</code> mode is used with the
      <code>:min_font_size</code> option set, the font size will not be reduced
      to less than the value provided even if it means truncating some text.

      If the <code>:disable_wrap_by_char</code> is set to <code>true</code>
      then any text wrapping done while using the <code>:shrink_to_fit</code>
      mode will not break up the middle of words.
    TEXT
  end

  example new_page: true do
    string = 'This is the sample text used for the text boxes. See how it ' \
      'behave with the various overflow options used.'

    text string

    y_position = cursor - 20
    %i[truncate expand shrink_to_fit].each_with_index do |mode, i|
      text_box string,
        at: [i * 150, y_position],
        width: 100,
        height: 50,
        overflow: mode
    end

    string = 'If the box is too small for the text, :shrink_to_fit ' \
      'can render the text in a really small font size.'

    move_down 120
    text string
    y_position = cursor - 20
    [nil, 8, 10, 12].each_with_index do |value, index|
      text_box string,
        at: [index * 150, y_position],
        width: 50,
        height: 50,
        overflow: :shrink_to_fit,
        min_font_size: value
    end
  end
end