369 lines
9.7 KiB
C#
369 lines
9.7 KiB
C#
using System.Collections.Generic;
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using TMPro;
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using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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/// <summary>
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/// Tab键导航系统
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/// 自动管理InputField之间的Tab键切换
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/// </summary>
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public class TabNavigationSystem : MonoBehaviour
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{
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[Header("导航设置")]
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public List<Selectable> NavigationOrder = new List<Selectable>(); // 导航顺序
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public bool AutoDetectInputFields = true; // 自动检测InputField
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public bool WrapNavigation = true; // 是否循环导航
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public bool EnableShiftReverse = true; // 是否支持Shift+Tab反向导航
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[Header("调试")]
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public bool ShowDebugInfo = false;
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private int _currentIndex = -1;
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private EventSystem _eventSystem;
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void Start()
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{
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Initialize();
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}
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void Update()
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{
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HandleTabInput();
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}
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private void Initialize()
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{
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_eventSystem = EventSystem.current;
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if (AutoDetectInputFields)
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{
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AutoDetectNavigationElements();
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}
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// 设置初始焦点
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if (NavigationOrder.Count > 0)
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{
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SetFocus(0);
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}
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if (ShowDebugInfo)
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{
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Debug.Log($"TabNavigationSystem: 初始化完成，找到 {NavigationOrder.Count} 个可导航元素");
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}
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}
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/// <summary>
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/// 自动检测可导航元素
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/// </summary>
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private void AutoDetectNavigationElements()
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{
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NavigationOrder.Clear();
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// 查找所有InputField
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var inputFields = FindObjectsOfType<TMP_InputField>();
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foreach (var inputField in inputFields)
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{
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if (inputField.interactable && inputField.gameObject.activeInHierarchy)
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{
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NavigationOrder.Add(inputField);
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}
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}
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// 查找所有传统InputField
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var legacyInputFields = FindObjectsOfType<InputField>();
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foreach (var inputField in legacyInputFields)
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{
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if (inputField.interactable && inputField.gameObject.activeInHierarchy)
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{
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NavigationOrder.Add(inputField);
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}
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}
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// 根据层级顺序排序
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NavigationOrder.Sort((a, b) =>
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{
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// 先按Y坐标排序（从上到下）
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var posA = a.transform.position;
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var posB = b.transform.position;
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if (Mathf.Abs(posA.y - posB.y) > 0.1f)
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{
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return posB.y.CompareTo(posA.y); // Y坐标大的在前（上面的先）
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}
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// Y坐标相近时按X坐标排序（从左到右）
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return posA.x.CompareTo(posB.x);
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});
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}
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/// <summary>
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/// 处理Tab键输入
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/// </summary>
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private void HandleTabInput()
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{
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if (NavigationOrder.Count == 0) return;
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// 检查Tab键
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if (Input.GetKeyDown(KeyCode.Tab))
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{
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bool reverse = EnableShiftReverse && (Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift));
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if (reverse)
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{
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NavigatePrevious();
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}
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else
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{
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NavigateNext();
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}
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}
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// 检查Enter键（移动到下一个）
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if (Input.GetKeyDown(KeyCode.Return) || Input.GetKeyDown(KeyCode.KeypadEnter))
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{
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// 如果当前焦点是InputField，则移动到下一个
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var currentSelection = _eventSystem?.currentSelectedGameObject;
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if (currentSelection != null)
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{
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var inputField = currentSelection.GetComponent<TMP_InputField>();
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var legacyInputField = currentSelection.GetComponent<InputField>();
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if (inputField != null || legacyInputField != null)
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{
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NavigateNext();
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}
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}
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}
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}
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/// <summary>
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/// 导航到下一个元素
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/// </summary>
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public void NavigateNext()
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{
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if (NavigationOrder.Count == 0) return;
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_currentIndex++;
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if (WrapNavigation)
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{
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_currentIndex %= NavigationOrder.Count;
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}
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else
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{
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_currentIndex = Mathf.Min(_currentIndex, NavigationOrder.Count - 1);
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}
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SetFocus(_currentIndex);
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}
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/// <summary>
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/// 导航到上一个元素
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/// </summary>
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public void NavigatePrevious()
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{
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if (NavigationOrder.Count == 0) return;
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_currentIndex--;
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if (WrapNavigation)
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{
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if (_currentIndex < 0)
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{
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_currentIndex = NavigationOrder.Count - 1;
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}
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}
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else
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{
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_currentIndex = Mathf.Max(_currentIndex, 0);
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}
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SetFocus(_currentIndex);
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}
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/// <summary>
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/// 设置焦点到指定索引的元素
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/// </summary>
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public void SetFocus(int index)
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{
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if (index < 0 || index >= NavigationOrder.Count) return;
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if (_eventSystem == null) return;
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var target = NavigationOrder[index];
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if (target == null || !target.interactable || !target.gameObject.activeInHierarchy)
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{
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// 跳过不可用的元素
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if (WrapNavigation)
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{
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NavigateNext();
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}
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return;
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}
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_currentIndex = index;
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// 设置选中
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_eventSystem.SetSelectedGameObject(target.gameObject);
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// 如果是InputField，激活输入
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var inputField = target.GetComponent<TMP_InputField>();
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if (inputField != null)
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{
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inputField.Select();
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inputField.ActivateInputField();
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}
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else
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{
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var legacyInputField = target.GetComponent<InputField>();
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if (legacyInputField != null)
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{
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legacyInputField.Select();
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legacyInputField.ActivateInputField();
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}
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}
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if (ShowDebugInfo)
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{
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Debug.Log($"TabNavigationSystem: 焦点切换到 {target.name} (索引: {index})");
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}
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}
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/// <summary>
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/// 手动添加导航元素
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/// </summary>
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public void AddNavigationElement(Selectable element)
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{
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if (element != null && !NavigationOrder.Contains(element))
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{
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NavigationOrder.Add(element);
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}
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}
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/// <summary>
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/// 移除导航元素
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/// </summary>
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public void RemoveNavigationElement(Selectable element)
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{
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if (NavigationOrder.Contains(element))
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{
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int index = NavigationOrder.IndexOf(element);
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NavigationOrder.Remove(element);
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// 调整当前索引
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if (_currentIndex >= index && _currentIndex > 0)
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{
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_currentIndex--;
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}
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}
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}
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/// <summary>
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/// 刷新导航列表
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/// </summary>
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public void RefreshNavigation()
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{
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if (AutoDetectInputFields)
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{
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AutoDetectNavigationElements();
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}
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}
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/// <summary>
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/// 获取当前焦点元素
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/// </summary>
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public Selectable GetCurrentElement()
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{
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if (_currentIndex >= 0 && _currentIndex < NavigationOrder.Count)
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{
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return NavigationOrder[_currentIndex];
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}
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return null;
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}
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/// <summary>
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/// 获取当前焦点索引
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/// </summary>
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public int GetCurrentIndex()
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{
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return _currentIndex;
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}
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/// <summary>
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/// 跳转到指定元素
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/// </summary>
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public void FocusElement(Selectable element)
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{
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int index = NavigationOrder.IndexOf(element);
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if (index >= 0)
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{
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SetFocus(index);
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}
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}
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}
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/// <summary>
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/// Tab导航辅助组件
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/// 可以附加到单独的InputField上，提供更精细的控制
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/// </summary>
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public class TabNavigationHelper : MonoBehaviour
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{
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[Header("导航设置")]
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public Selectable NextElement; // 下一个元素
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public Selectable PreviousElement; // 上一个元素
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public bool SkipThisElement = false; // 是否跳过此元素
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private Selectable _thisSelectable;
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void Start()
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{
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_thisSelectable = GetComponent<Selectable>();
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}
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void Update()
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{
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if (SkipThisElement) return;
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// 检查是否是当前选中的元素
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if (EventSystem.current?.currentSelectedGameObject == gameObject)
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{
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if (Input.GetKeyDown(KeyCode.Tab))
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{
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bool reverse = Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift);
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if (reverse && PreviousElement != null)
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{
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FocusElement(PreviousElement);
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}
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else if (!reverse && NextElement != null)
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{
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FocusElement(NextElement);
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}
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}
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}
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}
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private void FocusElement(Selectable element)
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{
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if (element != null && element.interactable && element.gameObject.activeInHierarchy)
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{
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EventSystem.current?.SetSelectedGameObject(element.gameObject);
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var inputField = element.GetComponent<TMP_InputField>();
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if (inputField != null)
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{
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inputField.Select();
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inputField.ActivateInputField();
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}
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else
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{
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var legacyInputField = element.GetComponent<InputField>();
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if (legacyInputField != null)
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{
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legacyInputField.Select();
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legacyInputField.ActivateInputField();
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}
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}
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}
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}
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} |