Realizado por Gaby, del colegio Nehen Peuman, Bariloche

fotoscopadas.rb

Shoes.setup do
   gem "chunky_png"
end

require "chunky_png"

Shoes.app(:title => "Fotos copadas", :width => 800, :height => 600, :resize => true) do
  stack do
		title("Fotos copadas")
		button("Load") do
			@foto = ask_open_file
			image (@foto)
		end
		button "sello" do
			@sello = ask_open_file
			image @sello
		end
		button("sellar") do
			avatar = ChunkyPNG::Image.from_file(@foto)
			badge  = ChunkyPNG::Image.from_file(@sello)
			avatar.compose!(badge, 10, 10)
			avatar.save("composited.png") # Force the fast saving routine.
			image("composited.png")
		end
		para "Por Gaby"
	end
end