added ios module

ios/OralTrainer/Player/PlayerSurfaceView.swift

@@ -0,0 +1,106 @@
+import AVFoundation
+import SwiftUI
+import UIKit
+
+/// 与安卓端 OralTrainerPlayerView 对齐的播放区：
+/// - 单击：播放 / 暂停
+/// - 左划 / 右划：上一句 / 下一句（无句边界时回退为快退 / 快进）
+/// - 长按：按触摸点水平位置变速（左慢右快），松手恢复原速
+struct PlayerSurfaceView: UIViewRepresentable {
+    let controller: PlayerController
+
+    func makeUIView(context: Context) -> VideoSurfaceView {
+        let view = VideoSurfaceView()
+        view.playerLayer.player = controller.player
+        view.controller = controller
+        return view
+    }
+
+    func updateUIView(_ uiView: VideoSurfaceView, context: Context) {
+        uiView.playerLayer.player = controller.player
+    }
+}
+
+final class VideoSurfaceView: UIView {
+    weak var controller: PlayerController?
+
+    override class var layerClass: AnyClass {
+        AVPlayerLayer.self
+    }
+
+    var playerLayer: AVPlayerLayer {
+        layer as! AVPlayerLayer
+    }
+
+    private let minSwipeDistance: CGFloat = 48
+    private let minSwipeVelocity: CGFloat = 160
+    private let longPressTimeout: TimeInterval = 0.5
+
+    private var tapRecognizer: UITapGestureRecognizer!
+    private var panRecognizer: UIPanGestureRecognizer!
+    private var longPressRecognizer: UILongPressGestureRecognizer!
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        backgroundColor = .black
+        playerLayer.videoGravity = .resizeAspect
+
+        tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap))
+        panRecognizer = UIPanGestureRecognizer(target: self, action: #selector(handlePan))
+        panRecognizer.minimumNumberOfTouches = 1
+        panRecognizer.maximumNumberOfTouches = 1
+        longPressRecognizer = UILongPressGestureRecognizer(
+            target: self,
+            action: #selector(handleLongPress)
+        )
+        longPressRecognizer.minimumPressDuration = longPressTimeout
+
+        tapRecognizer.require(toFail: panRecognizer)
+        tapRecognizer.require(toFail: longPressRecognizer)
+        panRecognizer.require(toFail: longPressRecognizer)
+
+        addGestureRecognizer(tapRecognizer)
+        addGestureRecognizer(panRecognizer)
+        addGestureRecognizer(longPressRecognizer)
+        isUserInteractionEnabled = true
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    @objc private func handleTap() {
+        controller?.handleGesture(.singleTap)
+    }
+
+    @objc private func handlePan(_ recognizer: UIPanGestureRecognizer) {
+        guard recognizer.state == .ended || recognizer.state == .cancelled else {
+            return
+        }
+        let translation = recognizer.translation(in: self)
+        let velocity = recognizer.velocity(in: self)
+        let dx = translation.x
+        let dy = translation.y
+        guard abs(dx) >= abs(dy),
+              abs(dx) >= minSwipeDistance,
+              abs(velocity.x) >= minSwipeVelocity else {
+            return
+        }
+        controller?.handleGesture(dx > 0 ? .swipeRight : .swipeLeft)
+    }
+
+    @objc private func handleLongPress(_ recognizer: UILongPressGestureRecognizer) {
+        let location = recognizer.location(in: self)
+        switch recognizer.state {
+        case .began:
+            controller?.beginLongPressSpeed(atX: location.x, width: bounds.width)
+        case .changed:
+            controller?.updateLongPressSpeed(atX: location.x, width: bounds.width)
+        case .ended, .cancelled:
+            controller?.endLongPressSpeed()
+        default:
+            break
+        }
+    }
+}