Module: SugarCube::CoreGraphics

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

Class Method Summary collapse

Class Method Details

.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

.Offset(horizontal_or_offset, vertical = nil) ⇒ Object

Accepts 1 or 2 arguments. 1 argument should be an Array, UIOffset, CGPoint, CGSize, or Numeric 2 should be horizontal, vertical



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# File 'lib/ios/sugarcube-coregraphics/core_graphics.rb', line 184

def Offset(horizontal_or_offset, vertical=nil)
  unless vertical
    case horizontal_or_offset
    when UIOffset
      horizontal = horizontal_or_offset.horizontal
      vertical = horizontal_or_offset.vertical
    when CGPoint
      horizontal = horizontal_or_offset.x
      vertical = horizontal_or_offset.y
    when CGSize
      horizontal = horizontal_or_offset.width
      vertical = horizontal_or_offset.height
    when Array
      horizontal = horizontal_or_offset[0]
      vertical = horizontal_or_offset[1]
    when Numeric
      horizontal = horizontal_or_offset
      vertical = horizontal_or_offset
    else
      raise RuntimeError.new("Invalid argument sent to Offset(#{horizontal_or_offset.inspect})")
    end
  else
    horizontal = horizontal_or_offset
  end
  return UIOffset.new(horizontal, vertical)
end

.Point(x_or_origin, y = nil) ⇒ Object

Accepts 1 or 2 arguments 1 argument should be a CGPoint, CGSize, Array[Numeric, Numeric] or UIOffset 2 arguments should be Numeric, Numeric



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# File 'lib/ios/sugarcube-coregraphics/core_graphics.rb', line 8

def Point(x_or_origin, y=nil)
  unless y
    case x_or_origin
    when CGPoint
      x = x_or_origin.x
      y = x_or_origin.y
    when CGSize
      x = x_or_origin.width
      y = x_or_origin.height
    when UIOffset
      x = x_or_origin.horizontal
      y = x_or_origin.vertical
    when Array
      x = x_or_origin[0]
      y = x_or_origin[1]
    else
      raise RuntimeError.new("Invalid argument sent to Point(#{x_or_origin.inspect})")
    end
  else
    x = x_or_origin
  end
  return CGPoint.new(x, y)
end

.Rect(x_or_origin, y_or_size = nil, w = nil, h = nil) ⇒ Object

Accepts 1, 2 or 4 arguments. 1 argument should be an Array, Array[,[Numeric*2]], CGRect, UIView or CALayar 2 arguments should be a CGPoint and a CGSize, 3 arguments should be either Numeric, Numeric, Size or Point, Numeric, Numeric 4 should be x, y, w, h



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# File 'lib/ios/sugarcube-coregraphics/core_graphics.rb', line 64

def Rect(x_or_origin, y_or_size=nil, w=nil, h=nil)
  # one arg
  if y_or_size.nil? and w.nil? and h.nil?
    case x_or_origin
    when CGRect
      x = x_or_origin.origin.x
      y = x_or_origin.origin.y
      w = x_or_origin.size.width
      h = x_or_origin.size.height
    when UIView, CALayer
      x = x_or_origin.frame.origin.x
      y = x_or_origin.frame.origin.y
      w = x_or_origin.frame.size.width
      h = x_or_origin.frame.size.height
    when Array
      if x_or_origin.length == 2
        x = x_or_origin[0][0]
        y = x_or_origin[0][1]
        w = x_or_origin[1][0]
        h = x_or_origin[1][1]
      elsif
        x = x_or_origin[0]
        y = x_or_origin[1]
        w = x_or_origin[2]
        h = x_or_origin[3]
      else
        raise RuntimeError.new("Invalid argument sent to Rect(#{x_or_origin.inspect})")
      end
    else
      raise RuntimeError.new("Invalid argument sent to Rect(#{x_or_origin.inspect})")
    end
  # two args
  elsif w.nil? and h.nil?
    x_or_origin = SugarCube::CoreGraphics::Point(x_or_origin) unless x_or_origin.is_a? CGPoint
    x = x_or_origin.x
    y = x_or_origin.y
    if y_or_size.is_a?(CGPoint)
      w = y_or_size.x - x
      h = y_or_size.y - y
    else
      y_or_size = SugarCube::CoreGraphics::Size(y_or_size)
      w = y_or_size.width
      h = y_or_size.height
    end
  # three args
  elsif h.nil?
    if x_or_origin.is_a? Numeric
      # x_or_origin: x, y_or_size: y, w: size
      point = SugarCube::CoreGraphics::Point(x_or_origin, y_or_size)
      size = w
      return SugarCube::CoreGraphics::Rect(point, size)
    elsif w.is_a? Numeric
      # x_or_origin: point, y_or_size: w, w: h
      point = x_or_origin
      size = SugarCube::CoreGraphics::Size(y_or_size, w)
      return SugarCube::CoreGraphics::Rect(point, size)
    else
      raise RuntimeError.new("Invalid arguments sent to Rect(#{x_or_origin.inspect}, #{y_or_size.inspect}, #{w.inspect})")
    end
  else
    x = x_or_origin
    y = y_or_size
  end
  return CGRect.new([x, y], [w, h])
end

.Size(w_or_size, h = nil) ⇒ Object

Accepts 1 or 2 arguments 1 argument should be a CGPoint, CGSize, Array[Numeric, Numeric] or UIOffset 2 arguments should be Numeric, Numeric



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# File 'lib/ios/sugarcube-coregraphics/core_graphics.rb', line 35

def Size(w_or_size, h=nil)
  unless h
    case w_or_size
    when CGSize
      w = w_or_size.width
      h = w_or_size.height
    when CGPoint
      w = w_or_size.x
      h = w_or_size.y
    when UIOffset
      w = w_or_size.horizontal
      h = w_or_size.vertical
    when Array
      w = w_or_size[0]
      h = w_or_size[1]
    else
      raise RuntimeError.new("Invalid argument sent to Size(#{w_or_size.inspect})")
    end
  else
    w = w_or_size
  end
  return CGSize.new(w, h)
end