//
//  CropView.swift
//  CapFinder
//
//  Created by User on 31.01.18.
//  Copyright © 2018 User. All rights reserved.
//

import UIKit

@IBDesignable class CropView: UIView {

    @IBInspectable var lineColor: UIColor = UIColor.black

    @IBInspectable var lineWidth: Float = 2

    @IBInspectable var relativeSize: Float = 0.6 {
        didSet { size = CGFloat(relativeSize) / 2 }
    }

    private var size: CGFloat = 0.3

    override init(frame: CGRect) {
        super.init(frame: frame)
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override func draw(_ rect: CGRect) {
        let height = rect.height
        let width = rect.width

        let length = height > width ? width : height

        let center = CGPoint(x: width / 2, y: height / 2)
        let path = UIBezierPath()

        path.lineWidth = CGFloat(self.lineWidth)
        lineColor.setStroke()

        path.addArc(
            withCenter: center,
            radius: length * size,
            startAngle: 0,
            endAngle: .pi * 2,
            clockwise: true)

        path.stroke()
    }
}