Method: UIImage#scale_within

Defined in:
lib/sugarcube-image/uiimage.rb

#scale_within(new_size) ⇒ Object

This method is similar to scale_to, except it doesn't pad the image, it just scales the image so that it will fit inside the new bounds.



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# File 'lib/sugarcube-image/uiimage.rb', line 185

def scale_within(new_size)
  target_size = SugarCube::CoreGraphics::Size(new_size)
  image_size = self.size

  if CGSizeEqualToSize(target_size, self.size)
    return self
  end

  width = image_size.width
  height = image_size.height

  target_width = target_size.width
  target_height = target_size.height

  width_factor = target_width / width
  height_factor = target_height / height

  if width_factor < height_factor
    scale_factor = width_factor
  else
    scale_factor = height_factor
  end

  if scale_factor == 1
    return self
  end

  scaled_size = CGSize.new(width * scale_factor, height * scale_factor)
  return scale_to(scaled_size)
end