107 lines
3.6 KiB
Swift
107 lines
3.6 KiB
Swift
import AVFoundation
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import SwiftUI
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import UIKit
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/// 与安卓端 OralTrainerPlayerView 对齐的播放区：
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/// - 单击：播放 / 暂停
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/// - 左划 / 右划：上一句 / 下一句（无句边界时回退为快退 / 快进）
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/// - 长按：按触摸点水平位置变速（左慢右快），松手恢复原速
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struct PlayerSurfaceView: UIViewRepresentable {
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let controller: PlayerController
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func makeUIView(context: Context) -> VideoSurfaceView {
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let view = VideoSurfaceView()
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view.playerLayer.player = controller.player
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view.controller = controller
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return view
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}
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func updateUIView(_ uiView: VideoSurfaceView, context: Context) {
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uiView.playerLayer.player = controller.player
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}
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}
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final class VideoSurfaceView: UIView {
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weak var controller: PlayerController?
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override class var layerClass: AnyClass {
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AVPlayerLayer.self
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}
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var playerLayer: AVPlayerLayer {
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layer as! AVPlayerLayer
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}
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private let minSwipeDistance: CGFloat = 48
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private let minSwipeVelocity: CGFloat = 160
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private let longPressTimeout: TimeInterval = 0.5
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private var tapRecognizer: UITapGestureRecognizer!
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private var panRecognizer: UIPanGestureRecognizer!
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private var longPressRecognizer: UILongPressGestureRecognizer!
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override init(frame: CGRect) {
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super.init(frame: frame)
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backgroundColor = .black
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playerLayer.videoGravity = .resizeAspect
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tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap))
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panRecognizer = UIPanGestureRecognizer(target: self, action: #selector(handlePan))
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panRecognizer.minimumNumberOfTouches = 1
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panRecognizer.maximumNumberOfTouches = 1
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longPressRecognizer = UILongPressGestureRecognizer(
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target: self,
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action: #selector(handleLongPress)
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)
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longPressRecognizer.minimumPressDuration = longPressTimeout
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tapRecognizer.require(toFail: panRecognizer)
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tapRecognizer.require(toFail: longPressRecognizer)
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panRecognizer.require(toFail: longPressRecognizer)
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addGestureRecognizer(tapRecognizer)
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addGestureRecognizer(panRecognizer)
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addGestureRecognizer(longPressRecognizer)
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isUserInteractionEnabled = true
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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@objc private func handleTap() {
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controller?.handleGesture(.singleTap)
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}
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@objc private func handlePan(_ recognizer: UIPanGestureRecognizer) {
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guard recognizer.state == .ended || recognizer.state == .cancelled else {
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return
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}
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let translation = recognizer.translation(in: self)
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let velocity = recognizer.velocity(in: self)
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let dx = translation.x
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let dy = translation.y
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guard abs(dx) >= abs(dy),
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abs(dx) >= minSwipeDistance,
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abs(velocity.x) >= minSwipeVelocity else {
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return
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}
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controller?.handleGesture(dx > 0 ? .swipeRight : .swipeLeft)
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}
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@objc private func handleLongPress(_ recognizer: UILongPressGestureRecognizer) {
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let location = recognizer.location(in: self)
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switch recognizer.state {
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case .began:
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controller?.beginLongPressSpeed(atX: location.x, width: bounds.width)
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case .changed:
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controller?.updateLongPressSpeed(atX: location.x, width: bounds.width)
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case .ended, .cancelled:
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controller?.endLongPressSpeed()
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default:
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break
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}
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}
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}
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