remear

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Insets;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.DefaultListModel;
import javax.swing.JButton;

remear

import java.awt.BorderLayout;
import java.awt.GraphicsConfigTemplate;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;

remear

Module Prawn
  Class Document

  def draw_crop_marks(spacing, margin, lineweight)
    #crop mark line thickness
    line_width(lineweight)
  
    #spacing = 2.125
    #margin = 9
  

remear

require 'prawn'

Prawn::Document.generate('crop-marks.pdf') do
  spacing = 12
  margin = 100
  
  canvas do
    # topleft corner
    stroke_line [bounds.left + spacing, bounds.top - margin], 
                [bounds.left + margin - spacing, bounds.top - margin]