Method: Prawn::Document#initialize

Defined in:
lib/prawn/document.rb

#initialize(options = {}, &block) ⇒ Document

Creates a new PDF Document.

Setting e.g. the ‘:margin` to 100 points and the `:left_margin` to 50 will result in margins of 100 points on every side except for the left, where it will be 50.

The ‘:margin` can also be an array much like CSS shorthand:

“‘ruby # Top and bottom are 20, left and right are 100. margin: [20, 100] # Top is 50, left and right are 100, bottom is 20. margin: [50, 100, 20] # Top is 10, right is 20, bottom is 30, left is 40. margin: [10, 20, 30, 40] “`

Additionally, ‘:page_size` can be specified as a simple two value array giving the width and height of the document you need in PDF Points.

Examples:

New document, US Letter paper, portrait orientation

pdf = Prawn::Document.new

New document, A4 paper, landscaped

pdf = Prawn::Document.new(page_size: "A4", page_layout: :landscape)

New document, Custom size

pdf = Prawn::Document.new(page_size: [200, 300])

New document, with background

pdf = Prawn::Document.new(
  background: "#{Prawn::DATADIR}/images/pigs.jpg"
)

Parameters:

  • options (Hash{Symbol => any}) (defaults to: {})

Options Hash (options):

  • :page_size (String, Array(Number, Number)) — default: LETTER —

    One of the ‘PDF::Core::PageGeometry` sizes.

  • :page_layout (:portrait, :landscape) —

    Page orientation.

  • :margin (Number, Array<Number>) — default: [32] —

    Sets the margin on all sides in points.

  • :left_margin (Number) — default: 32 —

    Sets the left margin in points.

  • :right_margin (Number) — default: 32 —

    Sets the right margin in points.

  • :top_margin (Number) — default: 32 —

    Sets the top margin in points.

  • :bottom_margin (Number) — default: 32 —

    Sets the bottom margin in points.

  • :skip_page_creation (Boolean) — default: false —

    Creates a document without starting the first page.

  • :compress (Boolean) — default: false —

    Compresses content streams before rendering them.

  • :background (String?) — default: nil —

    An image path to be used as background on all pages.

  • :background_scale (Number?) — default: 1 —

    Background image scale.

  • :info (Hash{Symbol => any}?) — default: nil —

    Generic hash allowing for custom metadata properties.

  • :text_formatter (Object) — default: Prawn::Text::Formatted::Parser —

    The text formatter to use for ‘:inline_format`ted text.



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# File 'lib/prawn/document.rb', line 227

def initialize(options = {}, &block)
  options = options.dup

  Prawn.verify_options(VALID_OPTIONS, options)

  # need to fix, as the refactoring breaks this
  # raise NotImplementedError if options[:skip_page_creation]

  self.class.extensions.reverse_each { |e| extend(e) }
  self.state = PDF::Core::DocumentState.new(options)
  state.populate_pages_from_store(self)
  renderer.min_version(state.store.min_version) if state.store.min_version

  renderer.min_version(1.6) if options[:print_scaling] == :none

  @background = options[:background]
  @background_scale = options[:background_scale] || 1
  @font_size = 12

  @bounding_box = nil
  @margin_box = nil

  @page_number = 0

  @text_formatter = options.delete(:text_formatter) ||
    Text::Formatted::Parser

  options[:size] = options.delete(:page_size)
  options[:layout] = options.delete(:page_layout)

  initialize_first_page(options)

  @bounding_box = @margin_box

  if block
    block.arity < 1 ? instance_eval(&block) : block[self]
  end
end