Convenience methods for dealing with coordinates in RubyMotion

ui_view.rb

class UIView
  def top
    frame.origin.y
  end
  def left
    frame.origin.x
  end
  def height
    frame.size.height
  end
  def width
    frame.size.width
  end
  def bottom
    top + height
  end
  def right
    left + width
  end
  def top=(new_top)
    self.frame = [[left,     new_top], frame.size]
  end
  def left=(new_left)
    self.frame = [[new_left, top],     frame.size]
  end
  def height=(new_height)
    self.frame = [frame.origin,        [width,     new_height]]
  end
  def width=(new_width)
    self.frame = [frame.origin,        [new_width, height]]
  end
end

# Create a view
v = UIView.alloc.initWithFrame [[10, 20], [300, 500]]
# => UIView(#e99e820, [[10.0, 20.0], [300.0, 500.0]])

# Use nice convenient accessors instead of the silly verbose v.frame.origin.x or v.frame.size.width
v.left
# => 10.0
v.top
# => 20.0
v.width
# => 300.0
v.height
# => 500.0
v.frame
# => #<CGRect origin=#<CGPoint x=10.0 y=20.0> size=#<CGSize width=300.0 height=500.0>>

# Nice setters to set a single property
v.height = 400
# => 400
v.height
# => 400.0
v.frame
# => #<CGRect origin=#<CGPoint x=10.0 y=20.0> size=#<CGSize width=300.0 height=400.0>>

Nice! I'm going to steal this. 👍

These were merged into SugarCube recently, though I think they're called x/x= and y/y= instead of top/left