144 lines
4.6 KiB
Swift
144 lines
4.6 KiB
Swift
#if os(iOS)
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import SwiftUI
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// MARK: - LivePlayerGestureLayer
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/// 直播播放器手势交互层 - 专为直播场景设计
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/// 直播不需要快进快退，仅支持：
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/// - 单击：显示/隐藏控制层
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/// - 双击：暂停/播放
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/// - 右侧垂直滑动：调节音量
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/// - 左侧垂直滑动：调节亮度
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struct LivePlayerGestureLayer: View {
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// MARK: - Callbacks
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let onTogglePlayPause: () -> Void
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let onToggleControls: () -> Void
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let onVolumeChanged: (CGFloat) -> Void
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// MARK: - State
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@State private var gestureMode: LiveGestureMode = .none
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@State private var showIndicator = false
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@State private var dragStartX: CGFloat = 0
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@State private var accumulatedBrightnessDelta: CGFloat = 0
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@State private var accumulatedVolumeDelta: CGFloat = 0
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enum LiveGestureMode: Equatable {
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case none
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case adjustingBrightness(delta: CGFloat)
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case adjustingVolume(delta: CGFloat)
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}
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// MARK: - Body
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var body: some View {
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GeometryReader { geometry in
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Color.clear
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.contentShape(Rectangle())
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.gesture(dragGesture(in: geometry))
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.onTapGesture(count: 2) {
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HapticManager.shared.lightImpact()
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onTogglePlayPause()
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}
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.onTapGesture(count: 1) {
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onToggleControls()
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}
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.overlay { gestureIndicatorOverlay }
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}
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}
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// MARK: - Drag Gesture
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private func dragGesture(in geometry: GeometryProxy) -> some Gesture {
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DragGesture(minimumDistance: 15)
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.onChanged { value in
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if gestureMode == .none {
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dragStartX = value.startLocation.x
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HapticManager.shared.lightImpact()
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}
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let absV = abs(value.translation.height)
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guard absV > 15 else { return }
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let isLeftHalf = dragStartX < geometry.size.width / 2
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let delta = -value.translation.height / 300.0
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if isLeftHalf {
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gestureMode = .adjustingBrightness(delta: delta)
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// Apply brightness directly
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let newBrightness = max(0, min(1, UIScreen.main.brightness + (delta - accumulatedBrightnessDelta)))
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UIScreen.main.brightness = newBrightness
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accumulatedBrightnessDelta = delta
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} else {
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gestureMode = .adjustingVolume(delta: delta)
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let volumeDelta = delta - accumulatedVolumeDelta
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onVolumeChanged(volumeDelta)
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accumulatedVolumeDelta = delta
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}
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withAnimation(.easeInOut(duration: 0.2)) {
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showIndicator = true
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}
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}
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.onEnded { _ in
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gestureMode = .none
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accumulatedBrightnessDelta = 0
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accumulatedVolumeDelta = 0
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withAnimation(.easeInOut(duration: 0.2)) {
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showIndicator = false
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}
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}
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}
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// MARK: - Gesture Indicator Overlay
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@ViewBuilder
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private var gestureIndicatorOverlay: some View {
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if showIndicator {
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VStack(spacing: 8) {
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indicatorIcon
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indicatorText
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}
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.padding(.horizontal, 20)
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.padding(.vertical, 12)
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.background(.ultraThinMaterial)
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.clipShape(RoundedRectangle(cornerRadius: 10))
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.opacity(showIndicator ? 1 : 0)
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.animation(.easeInOut(duration: 0.2), value: showIndicator)
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}
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}
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@ViewBuilder
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private var indicatorIcon: some View {
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switch gestureMode {
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case .adjustingBrightness:
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Image(systemName: "sun.max.fill")
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.font(.title2)
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.foregroundColor(.yellow)
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case .adjustingVolume:
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Image(systemName: "speaker.wave.2.fill")
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.font(.title2)
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.foregroundColor(.white)
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case .none:
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EmptyView()
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}
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}
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@ViewBuilder
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private var indicatorText: some View {
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switch gestureMode {
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case .adjustingBrightness:
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let percentage = Int(UIScreen.main.brightness * 100)
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Text("\(percentage)%")
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.font(.caption)
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.foregroundColor(.white)
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case .adjustingVolume:
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Text("音量")
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.font(.caption)
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.foregroundColor(.white)
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case .none:
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EmptyView()
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}
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}
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}
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#endif
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