Module: MotionKit::FrameCalculator

Included in:
ViewCalculator
Defined in:
lib/motion-kit/calculator/frame_calculator.rb

Instance Method Summary collapse

Instance Method Details

#calculate_frame(view, amount, full_view) ⇒ Object 



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# File 'lib/motion-kit/calculator/frame_calculator.rb', line 6

def calculate_frame(view, amount, full_view)
  if amount.is_a?(Symbol)
    calculate_frame_from_symbol(view, amount, full_view)
  elsif amount.is_a?(Array)
    calculate_frame_from_array(view, amount, full_view)
  elsif amount.is_a?(Hash)
    calculate_frame_from_hash(view, amount, full_view)
  else
    return amount
  end
end

#calculate_frame_from_array(view, amount, full_view) ⇒ Object 



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# File 'lib/motion-kit/calculator/frame_calculator.rb', line 35

def calculate_frame_from_array(view, amount, full_view)
  if amount.length == 2
    size = calculate_size(view, amount[1], full_view)
    origin = calculate_origin(view, :origin, amount[0], size, full_view)
  elsif amount.length == 4
    size = calculate_size(view, [amount[2], amount[3]], full_view)
    origin = calculate_origin(view, :origin, [amount[0], amount[1]], size, full_view)
  else
    raise "Don't know what to do with frame value #{amount.inspect}"
  end

  return CGRect.new(origin, size)
end

#calculate_frame_from_hash(view, amount, full_view) ⇒ Object 



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# File 'lib/motion-kit/calculator/frame_calculator.rb', line 49

def calculate_frame_from_hash(view, amount, full_view)
  size = calculate_size(view, (amount[:size] || amount), full_view)

  if amount.key?(:center)
    origin = calculate_origin(view, :center, amount[:center], size, full_view)
    origin.x -= size.width / 2
    origin.y -= size.height / 2
  else
    origin = calculate_origin(view, :origin, (amount[:origin] || amount), size, full_view)
  end

  return CGRect.new(origin, size)
end

#calculate_frame_from_symbol(view, amount, full_view) ⇒ Object 



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# File 'lib/motion-kit/calculator/frame_calculator.rb', line 18

def calculate_frame_from_symbol(view, amount, full_view)
  case amount
  when :full, :auto
    size = calculate_size(view, amount, full_view)
    origin = [0, 0]
  when :center
    size = view.frame.size
    origin = calculate_origin(view, :center, ['50%', '50%'], size, full_view)
    origin.x -= size.width / 2.0
    origin.y -= size.height / 2.0
  else
    raise "Unrecognized amount symbol #{amount.inspect} in MotionKit#calculate_frame"
  end

  return CGRect.new(origin, size)
end