mirror of https://github.com/oxen-io/session-ios
Michael Kirk
7 years ago
parent
918e3f7dfe
commit
86d61eee30
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{
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"images" : [
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{
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"idiom" : "universal",
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"filename" : "VideoPlayer_Slider_Thumb_15x15_@1x.png",
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"scale" : "1x"
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},
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{
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"idiom" : "universal",
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"filename" : "VideoPlayer_Slider_Thumb_15x15_@2x.png",
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"scale" : "2x"
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},
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{
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"idiom" : "universal",
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"filename" : "VideoPlayer_Slider_Thumb_15x15_@3x.png",
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"scale" : "3x"
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}
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],
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"info" : {
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"version" : 1,
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"author" : "xcode"
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}
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}
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//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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@available(iOS 9.0, *)
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@objc
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public class VideoPlayerView: UIView {
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var player: AVPlayer? {
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get {
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return playerLayer.player
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}
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set {
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playerLayer.player = newValue
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}
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}
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var playerLayer: AVPlayerLayer {
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return layer as! AVPlayerLayer
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}
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// Override UIView property
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override public static var layerClass: AnyClass {
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return AVPlayerLayer.self
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}
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}
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@available(iOS 9.0, *)
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@objc
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public protocol PlayerProgressBarDelegate {
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func playerProgressBarDidStartScrubbing(_ playerProgressBar: PlayerProgressBar)
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func playerProgressBar(_ playerProgressBar: PlayerProgressBar, scrubbedToTime time: CMTime)
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func playerProgressBar(_ playerProgressBar: PlayerProgressBar, didFinishScrubbingAtTime time: CMTime, shouldResumePlayback: Bool)
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}
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@available(iOS 9.0, *)
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@objc
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public class PlayerProgressBar: UIView {
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public let TAG = "[PlayerProgressBar]"
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@objc
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public weak var delegate: PlayerProgressBarDelegate?
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private lazy var formatter: DateComponentsFormatter = {
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let formatter = DateComponentsFormatter()
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formatter.unitsStyle = .positional
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formatter.allowedUnits = [.minute, .second ]
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formatter.zeroFormattingBehavior = [ .pad ]
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return formatter
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}()
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// MARK: Subviews
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private let positionLabel = UILabel()
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private let remainingLabel = UILabel()
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private let slider = UISlider()
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private let blurEffectView = UIVisualEffectView(effect: UIBlurEffect(style: .light))
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weak private var progressObserver: AnyObject?
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private let kPreferredTimeScale: CMTimeScale = 100
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public var player: AVPlayer? {
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didSet {
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guard let item = player?.currentItem else {
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owsFail("No player item")
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return
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}
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slider.minimumValue = 0
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let duration: CMTime = item.asset.duration
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slider.maximumValue = Float(CMTimeGetSeconds(duration))
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// OPTIMIZE We need a high frequency observer for smooth slider updates,
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// but could use a much less frequent observer for label updates
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progressObserver = player?.addPeriodicTimeObserver(forInterval: CMTime(seconds: 0.01, preferredTimescale: kPreferredTimeScale), queue: nil, using: { [weak self] (_) in
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self?.updateState()
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}) as AnyObject
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updateState()
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}
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}
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required public init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override public init(frame: CGRect) {
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super.init(frame: frame)
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// Background
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backgroundColor = UIColor.lightGray.withAlphaComponent(0.5)
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if !UIAccessibilityIsReduceTransparencyEnabled() {
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addSubview(blurEffectView)
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blurEffectView.autoPinToSuperviewEdges()
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}
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// Configure controls
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let kLabelFont = UIFont.monospacedDigitSystemFont(ofSize: 12, weight: UIFontWeightRegular)
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positionLabel.font = kLabelFont
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remainingLabel.font = kLabelFont
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// We use a smaller thumb for the progress slider.
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slider.setThumbImage(#imageLiteral(resourceName: "sliderProgressThumb"), for: .normal)
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slider.maximumTrackTintColor = UIColor.ows_black()
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slider.minimumTrackTintColor = UIColor.ows_black()
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slider.addTarget(self, action: #selector(handleSliderTouchDown), for: .touchDown)
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slider.addTarget(self, action: #selector(handleSliderTouchUp), for: .touchUpInside)
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slider.addTarget(self, action: #selector(handleSliderTouchUp), for: .touchUpOutside)
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slider.addTarget(self, action: #selector(handleSliderValueChanged), for: .valueChanged)
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// Layout Subviews
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addSubview(positionLabel)
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addSubview(remainingLabel)
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addSubview(slider)
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positionLabel.autoPinEdge(toSuperviewMargin: .leading)
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positionLabel.autoVCenterInSuperview()
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let kSliderMargin: CGFloat = 8
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slider.autoPinEdge(.leading, to: .trailing, of: positionLabel, withOffset: kSliderMargin)
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slider.autoVCenterInSuperview()
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remainingLabel.autoPinEdge(.leading, to: .trailing, of: slider, withOffset: kSliderMargin)
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remainingLabel.autoPinEdge(toSuperviewMargin: .trailing)
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remainingLabel.autoVCenterInSuperview()
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}
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// MARK: Gesture handling
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var wasPlayingWhenScrubbingStarted: Bool = false
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@objc
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private func handleSliderTouchDown(_ slider: UISlider) {
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guard let player = self.player else {
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owsFail("player was nil")
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return
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}
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self.wasPlayingWhenScrubbingStarted = (player.rate != 0) && (player.error == nil)
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self.delegate?.playerProgressBarDidStartScrubbing(self)
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}
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@objc
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private func handleSliderTouchUp(_ slider: UISlider) {
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let sliderTime = time(slider: slider)
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self.delegate?.playerProgressBar(self, didFinishScrubbingAtTime: sliderTime, shouldResumePlayback:wasPlayingWhenScrubbingStarted)
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}
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@objc
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private func handleSliderValueChanged(_ slider: UISlider) {
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let sliderTime = time(slider: slider)
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self.delegate?.playerProgressBar(self, scrubbedToTime: sliderTime)
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}
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// MARK: Render cycle
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private func updateState() {
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guard let player = player else {
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owsFail("\(TAG) player isn't set.")
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return
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}
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guard let item = player.currentItem else {
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owsFail("\(TAG) player has no item.")
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return
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}
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let position = player.currentTime()
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let positionSeconds: Float64 = CMTimeGetSeconds(position)
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positionLabel.text = formatter.string(from: positionSeconds)
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let duration: CMTime = item.asset.duration
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let remainingTime = duration - position
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let remainingSeconds = CMTimeGetSeconds(remainingTime)
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guard let remainingString = formatter.string(from: remainingSeconds) else {
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owsFail("unable to format time remaining")
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remainingLabel.text = "0:00"
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return
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}
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// show remaining time as negative
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remainingLabel.text = "-\(remainingString)"
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slider.setValue(Float(positionSeconds), animated: false)
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}
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// MARK: Util
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private func time(slider: UISlider) -> CMTime {
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let seconds: Double = Double(slider.value)
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return CMTime(seconds: seconds, preferredTimescale: kPreferredTimeScale)
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}
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}
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