/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 A UIViewController subclass that manages a QuartzPolygonView and a UI to allow for the selection of the stroke and fill mode.

 */

import UIKit

class QuartzPolyViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {

    @IBOutlet weak var picker: UIPickerView!

    @IBOutlet weak var quartzPolygonView: QuartzPolygonView!

    // These strings represent the actual drawing mode constants that are 

    // passed to CGContextDrawpath and as such should not be localized in

    // the context of this sample.

    let drawModes = [

        "Fill",         

        "EOFill",       // 1

        "Stroke",       // 2

        "FillStroke",   // 3

        "EOFillStroke"  // 4

    ]

    override func viewDidLoad() {

        super.viewDidLoad()

        // scrolls to the selected row.

        picker.selectRow(Int(quartzPolygonView.drawingMode.rawValue), inComponent: 0, animated: false)

    }

    // UIPickerViewDelegate & UIPickerViewDataSource methods

    func numberOfComponents(in pickerView: UIPickerView) -> Int {

        return 1

    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {

        return drawModes.count

    }

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

        return drawModes[row]

    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

        quartzPolygonView.drawingMode = CGPathDrawingMode(rawValue: Int32(picker.selectedRow(inComponent: 0)))!

    }

}