Contents

# frozen_string_literal: true

# This transformation is used to scale the user space. Give it an scale factor
# and an <code>:origin</code> point and everything inside the block will be
# scaled using the origin point as reference.
#
# If you omit the <code>:origin</code> option the page origin will be used.

require_relative '../example_helper'

filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::ManualBuilder::Example.generate(filename) do
  stroke_axis

  width = 100
  height = 50

  x = 50
  y = 200

  stroke_rectangle [x, y], width, height
  text_box 'reference rectangle', at: [x + 10, y - 10], width: width - 20

  scale(2, origin: [x, y]) do
    stroke_rectangle [x, y], width, height
    text_box 'rectangle scaled from upper-left corner',
      at: [x, y - height - 5],
      width: width
  end

  x = 350

  stroke_rectangle [x, y], width, height
  text_box 'reference rectangle', at: [x + 10, y - 10], width: width - 20

  scale(2, origin: [x + width / 2, y - height / 2]) do
    stroke_rectangle [x, y], width, height
    text_box 'rectangle scaled from center',
      at: [x, y - height - 5],
      width: width
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
prawn-2.4.0	manual/graphics/scale.rb
prawn-2.3.0	manual/graphics/scale.rb