Create screenshots with different screen resolutions on OS X with macruby.

mkscreenshot.rb

#!/usr/bin/env ruby

require "time"

begin
  Dir::mkdir("screenshots")
rescue
end

commit = File.new(".git/refs/heads/master", "r").read.strip
directory = "screenshots"
macruby_exe = "/usr/local/bin/macruby"
prefix = "screenshot"
snapper = "$HOME/github/tomafro/macruby-snapper/snapper.rb"
timestamp = Time.now.strftime("%s")
url = "http://localhost:5000/"

screensizes = [
  { :width => 640, :height => 960 },   # iPhone 4
  { :width => 800, :height => 480 },   # wvga  
  { :width => 800, :height => 600 },   # old school
  { :width => 1024, :height => 600 },  # netbook, WSVGA 
  { :width => 1024, :height => 786 },  # old school, iPad
  { :width => 1200, :height => 800 },  # macbook
  { :width => 1366, :height => 786 },  # netbook
  { :width => 1440, :height => 900 },  # macbook pro
  { :width => 1600, :height => 768 },  # strange
  { :width => 1680, :height => 1050 }  # hires macbok
]

fname = "#{directory}/#{prefix}-#{timestamp}-#{commit}.png"
call = "#{macruby_exe} #{snapper} #{url} #{fname}"
system call
puts "#{fname} (#{File.size?(fname) / 1024}kB)"

for size in screensizes do
  fname = "#{directory}/#{prefix}-#{timestamp}-#{commit}-#{size[:width]}x#{size[:height]}.png"
  call = "#{macruby_exe} #{snapper} --width #{size[:width]} --height #{size[:height]} #{url} #{fname}"
  system call
  puts "#{fname} (#{File.size?(fname) / 1024}kB)"
end