Class: Motion::LaunchImages

Inherits:
Object
  • Object
show all
Defined in:
lib/motion/devices.rb,
lib/motion/launch_images.rb

Class Method Summary collapse

Class Method Details

.capture!(orientation) ⇒ Object 



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# File 'lib/motion/launch_images.rb', line 28

def self.capture!(orientation)
  # sanity check the device values
  screen = UIScreen.mainScreen
  height = screen.bounds.size.height.to_i
  scale = screen.respondsToSelector('displayLinkWithTarget:selector:') ? screen.scale.to_i : 1
  device = get_device(device_name)
  expected_height = (orientation == :portrait ? device.height : device.width) / device.scale

  if expected_height != height || device.scale != scale
    puts "In #{orientation.to_s}, height was expected to be #{expected_height} but was #{height} and/or scale was expected to be #{device.scale} but was #{scale}"
    exit
  end

  if scale > 1
    UIGraphicsBeginImageContextWithOptions(window.bounds.size, false, screen.scale)
  else # TODO not sure if this is necessary anymore?
    UIGraphicsBeginImageContext(window.bounds.size)
  end

  filename = screenshot_path + device.filename(orientation)
  window.layer.renderInContext(UIGraphicsGetCurrentContext())
  image = UIGraphicsGetImageFromCurrentImageContext()
  UIGraphicsEndImageContext()
  data = UIImagePNGRepresentation(image)
  data.writeToFile(filename, atomically:true)
  puts "Wrote to #{filename}"

  if orientation == :portrait && device.landscape
    take!(:landscape)
  else
    exit
  end
end

.device_name ⇒ Object 



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# File 'lib/motion/launch_images.rb', line 7

def self.device_name
  NSBundle.mainBundle.objectForInfoDictionaryKey('device_name')
end

.get_device(name) ⇒ Object 



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# File 'lib/motion/devices.rb', line 54

def self.get_device(name)
  if iphones.has_key?(name)
    iphones[name]
  elsif ipads.has_key?(name)
    ipads[name]
  else
    puts "Unable to find device #{name}"
    exit
  end
end

.ipads ⇒ Object 



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# File 'lib/motion/devices.rb', line 46

def self.ipads
  {
    'iPad Pro (9.7-inch)'  => Device.new(1536, 2048, 2, true, true),
    'iPad Pro (10.5-inch)' => Device.new(1668, 2224, 2, true, false),
    'iPad Pro (12.9-inch)' => Device.new(2048, 2732, 2, true, false),
  }
end

.iphones ⇒ Object 



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# File 'lib/motion/devices.rb', line 37

def self.iphones
  {
    'iPhone SE'     => Device.new(640,  1136, 2, false, false), # also iPhone 5s
    'iPhone 8'      => Device.new(750,  1334, 2, false, false), # also iPhone 6/7
    'iPhone 8 Plus' => Device.new(1242, 2208, 3, false, false), # also iPhone 6/7 Plus
    'iPhone X'      => Device.new(1125, 2436, 3, false, false),
  }
end

.needs_rotation?(orientation) ⇒ Boolean 



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# File 'lib/motion/launch_images.rb', line 85

def self.needs_rotation?(orientation)
  status = UIApplication.sharedApplication.statusBarOrientation
  if orientation == :portrait && status == UIInterfaceOrientationPortrait
    false
  elsif orientation == :landscape && (status == UIInterfaceOrientationLandscapeLeft ||
                                      status == UIInterfaceOrientationLandscapeRight)
    false
  else
    true
  end
end

.rotate(to) ⇒ Object 



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# File 'lib/motion/launch_images.rb', line 75

def self.rotate(to)
  if to == :portrait
    value = NSNumber.numberWithInt(UIInterfaceOrientationPortrait)
  else
    value = NSNumber.numberWithInt(UIInterfaceOrientationLandscapeLeft)
  end

  UIDevice.currentDevice.setValue(value, forKey:'orientation')
end

.screenshot_path ⇒ Object 



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# File 'lib/motion/launch_images.rb', line 3

def self.screenshot_path
  NSBundle.mainBundle.objectForInfoDictionaryKey('screenshot_path')
end

.take!(orientation = :portrait) ⇒ Object 



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# File 'lib/motion/launch_images.rb', line 15

def self.take!(orientation = :portrait)
  return unless taking?

  Dispatch::Queue.main.async do
    if needs_rotation?(orientation)
      rotate(orientation)
      sleep 1.0
    end

    Dispatch::Queue.main.async { capture!(orientation) }
  end
end

.taking? ⇒ Boolean 



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# File 'lib/motion/launch_images.rb', line 11

def self.taking?
  screenshot_path != nil
end

.window ⇒ Object

ported from BubbleWrap to reduce dependencies



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# File 'lib/motion/launch_images.rb', line 63

def self.window
  normal_windows = UIApplication.sharedApplication.windows.select { |w|
    w.windowLevel == UIWindowLevelNormal
  }

  key_window = normal_windows.select { |w|
    w == UIApplication.sharedApplication.keyWindow
  }.first

  key_window || normal_windows.first
end