100 lines
2.9 KiB
Swift
100 lines
2.9 KiB
Swift
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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import UIKit
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import SignalUtilitiesKit
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@objc public class AudioProgressView: UIView {
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@objc public override var bounds: CGRect {
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didSet {
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if oldValue != bounds {
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updateSubviews()
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}
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}
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}
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@objc public override var frame: CGRect {
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didSet {
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if oldValue != frame {
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updateSubviews()
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}
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}
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}
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@objc public var horizontalBarColor = UIColor.black {
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didSet {
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updateContent()
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}
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}
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@objc public var progressColor = UIColor.blue {
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didSet {
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updateContent()
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}
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}
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private let horizontalBarLayer: CAShapeLayer
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private let progressLayer: CAShapeLayer
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@objc public var progress: CGFloat = 0 {
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didSet {
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if oldValue != progress {
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updateContent()
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}
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}
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}
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@available(*, unavailable, message:"use other constructor instead.")
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@objc public required init?(coder aDecoder: NSCoder) {
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notImplemented()
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}
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public required init() {
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self.horizontalBarLayer = CAShapeLayer()
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self.progressLayer = CAShapeLayer()
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super.init(frame: CGRect.zero)
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self.layer.addSublayer(self.horizontalBarLayer)
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self.layer.addSublayer(self.progressLayer)
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}
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internal func updateSubviews() {
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AssertIsOnMainThread()
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self.horizontalBarLayer.frame = self.bounds
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self.progressLayer.frame = self.bounds
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updateContent()
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}
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internal func updateContent() {
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AssertIsOnMainThread()
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// Prevent the shape layer from animating changes.
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CATransaction.begin()
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CATransaction.setDisableActions(true)
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let horizontalBarPath = UIBezierPath()
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let horizontalBarHeightFraction = CGFloat(0.25)
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let horizontalBarHeight = bounds.size.height * horizontalBarHeightFraction
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horizontalBarPath.append(UIBezierPath(rect: CGRect(x: 0, y: (bounds.size.height - horizontalBarHeight) * 0.5, width: bounds.size.width, height: horizontalBarHeight)))
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horizontalBarLayer.path = horizontalBarPath.cgPath
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horizontalBarLayer.fillColor = horizontalBarColor.cgColor
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let progressHeight = bounds.self.height
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let progressWidth = progressHeight * 0.15
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let progressX = (bounds.self.width - progressWidth) * max(0.0, min(1.0, progress))
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let progressBounds = CGRect(x: progressX, y: 0, width: progressWidth, height: progressHeight)
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let progressCornerRadius = progressWidth * 0.5
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let progressPath = UIBezierPath()
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progressPath.append(UIBezierPath(roundedRect: progressBounds, cornerRadius: progressCornerRadius))
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progressLayer.path = progressPath.cgPath
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progressLayer.fillColor = progressColor.cgColor
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CATransaction.commit()
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}
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}
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