richappz / mactoggle Goto Github PK

//================================================================================
// MARK: Properties
//================================================================================

fileprivate var height: CGFloat
fileprivate let width: CGFloat

fileprivate var leftConstraint: NSLayoutConstraint?
fileprivate var heightConstraint: NSLayoutConstraint?
fileprivate var widthConstraint: NSLayoutConstraint?

fileprivate let backVw: NSView = {
    let view = NSView()
    view.wantsLayer = true
    view.layer?.masksToBounds = false
    return view
}()

fileprivate let circle: NSView = {
    let view = NSView()

    let shadow = NSShadow()
    shadow.shadowColor = NSColor.black.withAlphaComponent(0.4)
    shadow.shadowOffset = CGSize(width: 0, height: -2)
    shadow.shadowBlurRadius = 2

    view.backgroundColor = .white
    view.wantsLayer = true
    view.shadow = shadow
    view.layer?.borderWidth = 2
    view.layer?.borderColor = NSColor.white.cgColor
    return view
}()

fileprivate var _radius: CGFloat?
fileprivate var backRadius: CGFloat {
    get {
        if let r = _radius { return r }
        return height/2
    }
}

fileprivate var circleRadius: CGFloat {
    get {
        if let r = _radius { return r-outlineWidth }
        return (height-(outlineWidth*2))/2
    }
}

fileprivate var toggleSize: CGFloat {
    get { return height-(outlineWidth*2) }
}

//================================================================================
// MARK: Callback
//================================================================================

var callback: ((_ isOn: Bool) -> Void)?

//================================================================================
// MARK: Public Parameters
//================================================================================

// MARK: - IBInspectable
**@IBInspectable** var isOn = false {
    didSet { animate() }
}

/// Change the toggle border on and off
**@IBInspectable** var hasToggleBorder = true {
    didSet { circle.layer?.borderWidth = hasToggleBorder ? toggleBorderWidth : 0 }
}

/// Change the width of the outline border
@IBInspectable var outlineWidth: CGFloat = 2 {
    didSet {
        backVw.layer?.borderWidth = outlineWidth
        layoutSwitch(resetingLayout: true)
    }
}

/// Change the width of the border on the toggle
@IBInspectable var toggleBorderWidth: CGFloat = 2 {
    didSet { circle.layer?.borderWidth = hasToggleBorder ? toggleBorderWidth : 0 }
}

/// Change the radius of the complete toggle
@IBInspectable var radius: CGFloat {
    get {
        if let r = _radius { return r }
        return (height-(outlineWidth*2))/2
    }
    set {
        _radius = newValue
        layoutSwitch()
    }
}


/// Change the color of the outline border
@IBInspectable var outlineColor: NSColor = .lightGray {
    didSet { backVw.layer?.borderColor = outlineColor.cgColor }
}

/// Change the color of the fill when the toggle is on
@IBInspectable var fillColor: NSColor = .lightGray {
    didSet { if isOn { backVw.layer?.borderColor = fillColor.cgColor } }
}

/// Change the color of the toggle center
@IBInspectable var toggleColor: NSColor = .white {
    didSet { circle.backgroundColor = toggleColor }
}

/// Change the background color of the complete toggle (visible when switch is off)
@IBInspectable var backColor: NSColor = .white {
    didSet { backVw.backgroundColor = backColor }
}