62 lines
1.7 KiB
Swift
62 lines
1.7 KiB
Swift
//
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// SawToothView.swift
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// Mastodon
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//
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// Created by sxiaojian on 2021/3/17.
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//
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import Foundation
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import UIKit
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import Combine
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final class SawToothView: UIView {
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static let widthUint = 8
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var disposeBag = Set<AnyCancellable>()
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override init(frame: CGRect) {
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super.init(frame: frame)
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_init()
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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_init()
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}
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func _init() {
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setupBackgroundColor(theme: ThemeService.shared.currentTheme.value)
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ThemeService.shared.currentTheme
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.receive(on: RunLoop.main)
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.sink { [weak self] theme in
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guard let self = self else { return }
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self.setupBackgroundColor(theme: theme)
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}
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.store(in: &disposeBag)
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}
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private func setupBackgroundColor(theme: Theme) {
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backgroundColor = theme.secondarySystemBackgroundColor
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setNeedsDisplay()
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}
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override func draw(_ rect: CGRect) {
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let bezierPath = UIBezierPath()
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let bottomY = rect.height
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let topY = 0
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let count = Int(ceil(rect.width / CGFloat(SawToothView.widthUint)))
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bezierPath.move(to: CGPoint(x: 0, y: bottomY))
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for n in 0 ..< count {
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bezierPath.addLine(to: CGPoint(x: CGFloat((Double(n) + 0.5) * Double(SawToothView.widthUint)), y: CGFloat(topY)))
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bezierPath.addLine(to: CGPoint(x: CGFloat((Double(n) + 1) * Double(SawToothView.widthUint)), y: CGFloat(bottomY)))
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}
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bezierPath.addLine(to: CGPoint(x: 0, y: bottomY))
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bezierPath.close()
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ThemeService.shared.currentTheme.value.tableViewCellBackgroundColor.setFill()
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bezierPath.fill()
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bezierPath.lineWidth = 0
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bezierPath.stroke()
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}
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}
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