SwiftPasscodeLock/PasscodeLock/Views/PasscodeSignButton.swift at 366f8a1cc9a55217755bbf244bb42db64ae0efb0 · velikanov/SwiftPasscodeLock · GitHub

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//
//  PasscodeSignButton.swift
//  PasscodeLock
//
//  Created by Yanko Dimitrov on 8/28/15.
//  Copyright © 2015 Yanko Dimitrov. All rights reserved.
//

import UIKit

@IBDesignable
public class PasscodeSignButton: UIButton {

    @IBInspectable
    public var passcodeSign: String = "1"

    @IBInspectable
    public var borderColor: UIColor = UIColor.whiteColor() {
        didSet {
            setupView()
        }
    }

    @IBInspectable
    public var borderRadius: CGFloat = 30 {
        didSet {
            setupView()
        }
    }

    @IBInspectable
    public var highlightBackgroundColor: UIColor = UIColor.clearColor() {
        didSet {
            setupView()
        }
    }

    public override init(frame: CGRect) {

        super.init(frame: frame)

        setupView()
        setupActions()
    }

    public required init?(coder aDecoder: NSCoder) {

        super.init(coder: aDecoder)

        setupActions()
    }

    public override func intrinsicContentSize() -> CGSize {

        return CGSizeMake(60, 60)
    }

    public var defaultBackgroundColor = UIColor.clearColor()

    private func setupView() {

        layer.borderWidth = 1
        layer.cornerRadius = borderRadius
        layer.borderColor = borderColor.CGColor

        if let backgroundColor = backgroundColor {

            defaultBackgroundColor = backgroundColor
        }
    }

    private func setupActions() {

        addTarget(self, action: #selector(PasscodeSignButton.handleTouchDown), forControlEvents: .TouchDown)
        addTarget(self, action: #selector(PasscodeSignButton.handleTouchUp), forControlEvents: [.TouchUpInside, .TouchDragOutside, .TouchCancel])
    }

    func handleTouchDown() {

        animateBackgroundColor(highlightBackgroundColor)
    }

    func handleTouchUp() {

        animateBackgroundColor(defaultBackgroundColor)
    }

    private func animateBackgroundColor(color: UIColor) {

        UIView.animateWithDuration(
            0.3,
            delay: 0.0,
            usingSpringWithDamping: 1,
            initialSpringVelocity: 0.0,
            options: [.AllowUserInteraction, .BeginFromCurrentState],
            animations: {

                self.backgroundColor = color
            },
            completion: nil
        )
    }
}