//setup your view:
let redLabel = UILabel()
redLabel.text = "I'm padded. Tap me"
redLabel.backgroundColor = UIColor.redColor()

//Add it as the content of a PaddedView, include the padding:
let redLabelPadded = PaddedView(content: redLabel, bottomPadding: 10)

//add the padded view to the superview:
viewsDict["redLabel"] = redLabelPadded
view.addSubview(redLabelPadded)


//Set up your other constraints:
let constraints = [
    "H:|-[imageView]-|",
    "H:|-[redLabel]-|",
    "H:|-[blueView]-|",

    "V:|-30-[imageView][redLabel][blueView(20)]"

    ].flatMap {
        NSLayoutConstraint.constraintsWithVisualFormat($0, options: [], metrics: nil, views: viewsDict)
}

NSLayoutConstraint.activateConstraints(constraints)


//When you set the content of the paddedview to nil, its size will 
//become zero, and its padding will disappear:
func tapped() {
    redLabel.text = nil
}