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341 lines
12 KiB
341 lines
12 KiB
import UIKit
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/// 悬浮窗实现类
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/// 使用 UIWindow 创建应用内悬浮窗口
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class FloatingWindow: UIWindow {
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// MARK: - 属性
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private weak var delegate: FloatingWindowDelegate?
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private var floatingViewController: FloatingViewController?
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private var isMinimized = true
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private var lastPosition = CGPoint(x: 100, y: 100)
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// MARK: - 初始化
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init(delegate: FloatingWindowDelegate) {
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self.delegate = delegate
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// 创建窗口
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super.init(frame: CGRect(x: 100, y: 100, width: 300, height: 120))
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setupWindow()
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setupViewController()
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}
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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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// MARK: - 私有方法
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/// 设置窗口属性
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private func setupWindow() {
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// 设置窗口层级，确保在最顶层显示
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windowLevel = UIWindow.Level.alert + 1
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backgroundColor = UIColor.clear
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// 设置窗口为可见但不成为主窗口
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isHidden = true
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// 设置圆角
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layer.cornerRadius = 12
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layer.masksToBounds = true
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}
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/// 设置视图控制器
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private func setupViewController() {
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floatingViewController = FloatingViewController()
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floatingViewController?.delegate = self
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rootViewController = floatingViewController
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}
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// MARK: - 公共方法
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/// 显示悬浮窗
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func show() {
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isHidden = false
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makeKeyAndVisible()
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// 添加显示动画
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alpha = 0
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UIView.animate(withDuration: 0.3) {
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self.alpha = 1
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}
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delegate?.floatingWindowDidChangeState(isMinimized ? "minimized" : "expanded")
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}
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/// 隐藏悬浮窗
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func hide() {
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UIView.animate(withDuration: 0.3, animations: {
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self.alpha = 0
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}) { _ in
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self.isHidden = true
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self.resignKey()
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}
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delegate?.floatingWindowDidChangeState("hidden")
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}
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/// 更新内容
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func updateContent(_ data: FloatingWindowContentData) {
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floatingViewController?.updateContent(data)
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}
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/// 设置位置
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func setPosition(x: Double, y: Double) {
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let newPosition = CGPoint(x: x, y: y)
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lastPosition = newPosition
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UIView.animate(withDuration: 0.3) {
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self.frame.origin = newPosition
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}
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}
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/// 切换最小化/展开状态
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func toggleMinimized() {
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isMinimized.toggle()
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let newSize: CGSize
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if isMinimized {
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newSize = CGSize(width: 120, height: 60)
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} else {
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newSize = CGSize(width: 300, height: 120)
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}
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UIView.animate(withDuration: 0.3) {
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self.frame.size = newSize
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}
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floatingViewController?.setMinimized(isMinimized)
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delegate?.floatingWindowDidChangeState(isMinimized ? "minimized" : "expanded")
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}
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}
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// MARK: - FloatingViewControllerDelegate
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extension FloatingWindow: FloatingViewControllerDelegate {
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func floatingViewControllerDidTap() {
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toggleMinimized()
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delegate?.floatingWindowDidClick()
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}
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func floatingViewControllerDidPan(translation: CGPoint) {
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let newOrigin = CGPoint(
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x: lastPosition.x + translation.x,
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y: lastPosition.y + translation.y
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)
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// 限制在屏幕范围内
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let screenBounds = UIScreen.main.bounds
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let constrainedX = max(0, min(newOrigin.x, screenBounds.width - frame.width))
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let constrainedY = max(0, min(newOrigin.y, screenBounds.height - frame.height))
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frame.origin = CGPoint(x: constrainedX, y: constrainedY)
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}
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func floatingViewControllerDidEndPan() {
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lastPosition = frame.origin
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}
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func floatingViewControllerDidRequestClose() {
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hide()
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delegate?.floatingWindowDidClose()
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}
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}
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/// 悬浮窗视图控制器
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private class FloatingViewController: UIViewController {
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// MARK: - 属性
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weak var delegate: FloatingViewControllerDelegate?
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// UI 组件
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private let containerView = UIView()
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private let sourceTextLabel = UILabel()
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private let translatedTextLabel = UILabel()
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private let languageInfoLabel = UILabel()
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private let timestampLabel = UILabel()
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private let closeButton = UIButton(type: .system)
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// 手势识别器
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private var panGestureRecognizer: UIPanGestureRecognizer!
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private var tapGestureRecognizer: UITapGestureRecognizer!
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private var isMinimized = true
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// MARK: - 生命周期
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override func viewDidLoad() {
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super.viewDidLoad()
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setupUI()
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setupGestures()
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}
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// MARK: - 私有方法
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/// 设置 UI
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private func setupUI() {
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view.backgroundColor = UIColor.clear
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// 容器视图
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containerView.backgroundColor = UIColor.black.withAlphaComponent(0.8)
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containerView.layer.cornerRadius = 12
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containerView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(containerView)
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// 源文本标签
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sourceTextLabel.textColor = .white
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sourceTextLabel.font = UIFont.systemFont(ofSize: 14)
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sourceTextLabel.numberOfLines = 2
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sourceTextLabel.translatesAutoresizingMaskIntoConstraints = false
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containerView.addSubview(sourceTextLabel)
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// 翻译文本标签
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translatedTextLabel.textColor = .systemBlue
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translatedTextLabel.font = UIFont.systemFont(ofSize: 14, weight: .medium)
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translatedTextLabel.numberOfLines = 2
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translatedTextLabel.translatesAutoresizingMaskIntoConstraints = false
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containerView.addSubview(translatedTextLabel)
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// 语言信息标签
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languageInfoLabel.textColor = .lightGray
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languageInfoLabel.font = UIFont.systemFont(ofSize: 10)
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languageInfoLabel.translatesAutoresizingMaskIntoConstraints = false
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containerView.addSubview(languageInfoLabel)
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// 时间戳标签
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timestampLabel.textColor = .lightGray
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timestampLabel.font = UIFont.systemFont(ofSize: 10)
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timestampLabel.textAlignment = .right
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timestampLabel.translatesAutoresizingMaskIntoConstraints = false
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containerView.addSubview(timestampLabel)
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// 关闭按钮
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closeButton.setTitle("×", for: .normal)
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closeButton.setTitleColor(.white, for: .normal)
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closeButton.titleLabel?.font = UIFont.systemFont(ofSize: 18, weight: .bold)
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closeButton.translatesAutoresizingMaskIntoConstraints = false
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closeButton.addTarget(self, action: #selector(closeButtonTapped), for: .touchUpInside)
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containerView.addSubview(closeButton)
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setupConstraints()
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}
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/// 设置约束
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private func setupConstraints() {
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NSLayoutConstraint.activate([
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// 容器视图
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containerView.topAnchor.constraint(equalTo: view.topAnchor),
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containerView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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containerView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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containerView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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// 关闭按钮
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closeButton.topAnchor.constraint(equalTo: containerView.topAnchor, constant: 4),
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closeButton.trailingAnchor.constraint(equalTo: containerView.trailingAnchor, constant: -4),
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closeButton.widthAnchor.constraint(equalToConstant: 20),
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closeButton.heightAnchor.constraint(equalToConstant: 20),
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// 源文本标签
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sourceTextLabel.topAnchor.constraint(equalTo: containerView.topAnchor, constant: 8),
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sourceTextLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: 8),
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sourceTextLabel.trailingAnchor.constraint(equalTo: closeButton.leadingAnchor, constant: -4),
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// 翻译文本标签
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translatedTextLabel.topAnchor.constraint(equalTo: sourceTextLabel.bottomAnchor, constant: 4),
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translatedTextLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: 8),
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translatedTextLabel.trailingAnchor.constraint(equalTo: containerView.trailingAnchor, constant: -8),
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// 语言信息标签
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languageInfoLabel.topAnchor.constraint(equalTo: translatedTextLabel.bottomAnchor, constant: 4),
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languageInfoLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: 8),
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languageInfoLabel.bottomAnchor.constraint(equalTo: containerView.bottomAnchor, constant: -4),
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// 时间戳标签
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timestampLabel.topAnchor.constraint(equalTo: translatedTextLabel.bottomAnchor, constant: 4),
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timestampLabel.trailingAnchor.constraint(equalTo: containerView.trailingAnchor, constant: -8),
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timestampLabel.bottomAnchor.constraint(equalTo: containerView.bottomAnchor, constant: -4)
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])
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}
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/// 设置手势识别器
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private func setupGestures() {
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// 拖拽手势
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panGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(handlePan(_:)))
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view.addGestureRecognizer(panGestureRecognizer)
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// 点击手势
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tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
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view.addGestureRecognizer(tapGestureRecognizer)
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}
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// MARK: - 手势处理
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@objc private func handlePan(_ gesture: UIPanGestureRecognizer) {
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let translation = gesture.translation(in: view.superview)
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switch gesture.state {
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case .changed:
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delegate?.floatingViewControllerDidPan(translation: translation)
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case .ended, .cancelled:
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delegate?.floatingViewControllerDidEndPan()
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default:
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break
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}
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}
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@objc private func handleTap(_ gesture: UITapGestureRecognizer) {
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delegate?.floatingViewControllerDidTap()
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}
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@objc private func closeButtonTapped() {
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delegate?.floatingViewControllerDidRequestClose()
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}
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// MARK: - 公共方法
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/// 更新内容
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func updateContent(_ data: FloatingWindowContentData) {
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sourceTextLabel.text = data.sourceText.isEmpty ? "正在识别..." : data.sourceText
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translatedTextLabel.text = data.translatedText.isEmpty ? "翻译中..." : data.translatedText
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languageInfoLabel.text = "\(data.sourceLanguage) → \(data.targetLanguage)"
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// 格式化时间戳
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if data.timestamp > 0 {
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let date = Date(timeIntervalSince1970: TimeInterval(data.timestamp / 1000))
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let formatter = DateFormatter()
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formatter.dateFormat = "HH:mm:ss"
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timestampLabel.text = formatter.string(from: date)
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}
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// 中间结果的视觉提示
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translatedTextLabel.alpha = data.isIntermediate ? 0.7 : 1.0
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}
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/// 设置最小化状态
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func setMinimized(_ minimized: Bool) {
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isMinimized = minimized
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// 在最小化状态下隐藏部分元素
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sourceTextLabel.isHidden = minimized
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languageInfoLabel.isHidden = minimized
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timestampLabel.isHidden = minimized
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closeButton.isHidden = minimized
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// 调整翻译文本标签的约束
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if minimized {
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translatedTextLabel.numberOfLines = 1
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translatedTextLabel.font = UIFont.systemFont(ofSize: 12, weight: .medium)
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} else {
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translatedTextLabel.numberOfLines = 2
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translatedTextLabel.font = UIFont.systemFont(ofSize: 14, weight: .medium)
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}
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}
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}
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/// 悬浮窗视图控制器代理协议
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private protocol FloatingViewControllerDelegate: AnyObject {
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func floatingViewControllerDidTap()
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func floatingViewControllerDidPan(translation: CGPoint)
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func floatingViewControllerDidEndPan()
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func floatingViewControllerDidRequestClose()
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}
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