mastodon-ios/Mastodon/Scene/Share/View/Decoration/SawToothView.swift

47 lines
1.3 KiB
Swift

//
// SawToothView.swift
// Mastodon
//
// Created by sxiaojian on 2021/3/17.
//
import Foundation
import UIKit
final class SawToothView: UIView {
static let widthUint = 8
override init(frame: CGRect) {
super.init(frame: frame)
_init()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
_init()
}
func _init() {
backgroundColor = Asset.Colors.Background.secondarySystemBackground.color
}
override func draw(_ rect: CGRect) {
let bezierPath = UIBezierPath()
let bottomY = rect.height
let topY = 0
let count = Int(ceil(rect.width / CGFloat(SawToothView.widthUint)))
bezierPath.move(to: CGPoint(x: 0, y: bottomY))
for n in 0 ..< count {
bezierPath.addLine(to: CGPoint(x: CGFloat((Double(n) + 0.5) * Double(SawToothView.widthUint)), y: CGFloat(topY)))
bezierPath.addLine(to: CGPoint(x: CGFloat((Double(n) + 1) * Double(SawToothView.widthUint)), y: CGFloat(bottomY)))
}
bezierPath.addLine(to: CGPoint(x: 0, y: bottomY))
bezierPath.close()
Asset.Colors.Background.systemBackground.color.setFill()
bezierPath.fill()
bezierPath.lineWidth = 0
bezierPath.stroke()
}
}