//
//  Scroller.swift
//  PrivadoVPN
//
//  Created by Murad Shabanov on 01.03.2022.
//  Copyright © 2022 Privado LLC. All rights reserved.
//

import Foundation

class Scroller: NSScroller {
    
    var backgroundColor: NSColor
    var knobColor: NSColor
    var xOffset: CGFloat
    var isHorizontal = false

    var bkgrColour: NSColor {
        get { return self.backgroundColor }
        set { self.backgroundColor = newValue }
    }

    var knobColour: NSColor {
        get { return self.knobColor }
        set { self.knobColor = newValue}
    }
    
    override var frame: CGRect {
        didSet {
            let size = self.frame.size
            self.isHorizontal = size.width > size.height
        }
    }
    
    convenience init(backgroundColor: NSColor, knobColor: NSColor, xOffset: CGFloat) {
        self.init(frame: .zero)
        self.backgroundColor = backgroundColor
        self.knobColor = knobColor
        self.xOffset = xOffset
    }
    
    override init(frame frameRect: NSRect) {
        self.backgroundColor = NSColor(red: 0, green: 8, blue: 44)
        self.knobColor = NSColor(red: 122, green: 134, blue: 186)
        self.xOffset = 0
        super.init(frame: frameRect)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
//    override class func scrollerWidth(for controlSize: NSControl.ControlSize, scrollerStyle: NSScroller.Style) -> CGFloat {
//        return 12
//    }

    override func draw(_ dirtyRect: NSRect) {
        self.backgroundColor.setFill()
        dirtyRect.fill()
        self.drawKnob()
    }
    
    override func drawKnob() {
        self.knobColor.setFill()

        let dx, dy: CGFloat
        if self.isHorizontal {
            dx = 0; dy = 3
        } else {
            dx = 3; dy = 0
        }

        let frame = rect(for: .knob).insetBy(dx: dx, dy: dy)
        NSBezierPath.init(roundedRect: frame, xRadius: 3, yRadius: 3).fill()
    }

}