gallery.rb

require "ftools"
require 'RMagick'

class Gallery
	include Magick
	attr_accessor :source_dir  , :target_dir, :name, :picture_width, :thumbnail_width, :copy_org_pic
	
	def initialize()
		@source_dir = source_dir
		@target_dir = target_dir
		@name = name
		@picture_width = picture_width
		@thumbnail_width = thumbnail_width
		@copy_org_pic = copy_org_pic
	end
	
	def pictures
		Dir.new(source_dir).to_a.delete_if { |f| f !~ /(jpg|gif|png)$/i }
	end
	
	
	def create_dir(path)
		Dir.mkdir(path ,0755)  unless File.exist?(path) 
	end
	
	def create_dirs()
		gallery_path = "#{@target_dir}/#{@name}/"
		puts "abc: path:" + gallery_path
		create_dir(gallery_path) 
		create_dir("#{gallery_path}thumbnails") 
		create_dir("#{gallery_path}originals")  if copy_org_pic
	end
	
	def create
		create_dirs()
		pictures.each do |picture|
			
			puts picture
			
			File.cp("#{source_dir}/#{picture}", "#{@target_dir}/#{@name}/originals/#{picture}")  if copy_org_pic

			# Open the image-file
			img = Image.read("#{source_dir}/#{picture}").first
			# Create thumbnail dir if it does not exist
			
			thumbnail_name = "#{target_dir}/#{@name}/thumbnails/#{picture}"
			picture_name = "#{target_dir}/#{@name}/#{picture}"
			
			# If the images is in landscape format we use the image-width to calculate 
			if img.columns >  img.rows
				thumbnail_factor = (thumbnail_width.to_f / img.columns )
				picture_factor = (picture_width.to_f / img.columns )
			else
				thumbnail_factor = (thumbnail_width.to_f / img.rows )
				picture_factor = (picture_width.to_f / img.rows )
			end
			
			thumb = img.scale(picture_factor )
			thumb.write(picture_name )    
			thumb = img.scale(thumbnail_factor )
			thumb.write(thumbnail_name )    
		end
	end
end	 

require 'gallery'

puts "\nEnter the source directory:"
str_source_dir  = gets.chop #Remove newline from string
while File.exist?(str_source_dir) == false
	puts  str_source_dir  + " does not exist, try again"
	str_source_dir = gets.chop
end

gallery = Gallery.new
gallery.source_dir = str_source_dir
gallery.copy_org_pic = false


puts "There is #{gallery.pictures.length.to_s} pictures in the directory: #{str_source_dir}"

puts "\nEnter the taget directory:"
str_target_directory = gets.chop #Remove newline from string
while File.exist?(str_target_directory ) == false
	puts  str_target_directory + " does not exist, try again"
	str_target_directory = gets.chop
end
gallery.target_dir = str_target_directory

puts "and the name of the gallery is?"
gallery.name = gets.chop
	
puts "Enter the max width of the presentation picture"
gallery.picture_width = gets
	
puts "Enter the max width of the thumbnails"
gallery.thumbnail_width = gets

gallery.create()