Method: SugarCube::CoreGraphics.EdgeInsets

Defined in:
lib/ios/sugarcube-coregraphics/core_graphics.rb

.EdgeInsets(top_or_inset, left = nil, bottom = nil, right = nil) ⇒ Object

Accepts 1..4 arguments. 1 argument should be an Array[Numeric * 1..4], UIEdgeInset, or Numeric 2 arguments should be top/bottom, left/right 3 arguments should be top, left/right, bottom 4 should be top, left, bottom, right


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# File 'lib/ios/sugarcube-coregraphics/core_graphics.rb', line 135

def EdgeInsets(top_or_inset, left=nil, bottom=nil, right=nil)
  if left.nil? and bottom.nil? and right.nil?
    case top_or_inset
    when UIEdgeInsets
      top = top_or_inset.top
      left = top_or_inset.left
      bottom = top_or_inset.bottom
      right = top_or_inset.right
    when CGRect
      # converting a rect to insets is hard to visualize,
      # but it goes something like this:
      # +-----------.....----------+
      # | origin |y   | top inset  |
      # |--------+    V            |
      # |    x    ..........       |
      # .         .        .       .
      # .-------->.        . right .
      # . left    .        . inset .
      # . inset   .        .<------.
      # .         .        .       .
      # |         ..........   w   |
      # |             ^     +------|
      # | bottom inset|    h| size |
      # +-----------.....----------+
      left = top_or_inset.origin.x
      top = top_or_inset.origin.y
      right = top_or_inset.size.width
      bottom = top_or_inset.size.height
    when Array
      # okay, in this ONE case, I use the splat operator.
      return SugarCube::CoreGraphics::EdgeInsets(*top_or_inset)
    when Numeric
      top = left = bottom = right = top_or_inset
    else
      raise RuntimeError.new("Invalid argument sent to EdgeInsets(#{top_or_inset.inspect})")
    end
  elsif bottom.nil? and right.nil?
    return SugarCube::CoreGraphics::EdgeInsets(top_or_inset, left, top_or_inset, left)
  elsif right.nil?
    return SugarCube::CoreGraphics::EdgeInsets(top_or_inset, left, bottom, left)
  else
    top = top_or_inset
  end
  return UIEdgeInsets.new(top, left, bottom, right)
end