110 lines
3.7 KiB
C#
110 lines
3.7 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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using UnityEngine;
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using UnityEngine.EventSystems;
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using XericLibrary.Runtime.MacroLibrary;
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namespace XericUI.Helper
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{
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/// <summary>
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/// UI输入系统帮助
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/// </summary>
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public static class EventSystemHelper
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{
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#region 字段属性
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private static int raycastResultsFrameIndex = -1;
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public static List<RaycastResult> raycastResults = new List<RaycastResult>();
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#endregion
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#region 辅助功能
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/// <summary>
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/// 根据重载可选覆盖返回的事件系统
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/// </summary>
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/// <param name="overrideEventSystem"></param>
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/// <returns></returns>
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private static EventSystem GetEventSystem(EventSystem overrideEventSystem = null)
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=> overrideEventSystem == null
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? EventSystem.current
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: overrideEventSystem;
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/// <summary>
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/// 当前是否步进帧
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/// </summary>
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/// <param name="frameIndex"></param>
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/// <param name="holdon">保持状态</param>
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/// <returns></returns>
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private static bool IsFrameIndexChange(ref int frameIndex, bool holdon = false)
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{
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if (frameIndex == Time.frameCount)
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return false;
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if (holdon)
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return true;
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frameIndex = Time.frameCount;
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return true;
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}
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#endregion
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#region 光标在其上
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/// <summary>
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/// 判断当前光标是否处于任意UI对象上
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/// </summary>
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/// <param name="overrideEventSystem"></param>
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/// <returns></returns>
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public static bool IsPointerOverGameObject(EventSystem overrideEventSystem = null)
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{
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overrideEventSystem = GetEventSystem(overrideEventSystem);
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return overrideEventSystem.IsPointerOverGameObject();
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}
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/// <summary>
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/// 自动更新射线监测
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/// </summary>
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/// <param name="overrideEventSystem"></param>
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/// <returns></returns>
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public static List<RaycastResult> GetRaycastAllResults(EventSystem overrideEventSystem = null)
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{
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if (!IsFrameIndexChange(ref raycastResultsFrameIndex))
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return raycastResults;
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overrideEventSystem = GetEventSystem(overrideEventSystem);
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var pointerData = new PointerEventData(overrideEventSystem)
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{
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position = Input.mousePosition
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};
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overrideEventSystem.RaycastAll(pointerData, raycastResults);
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return raycastResults;
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}
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/// <summary>
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/// 判断当前光标是否处于特定组件上
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/// </summary>
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/// <param name="component">返回找到的组件</param>
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/// <param name="compatibility">是否启用兼容性，当在所有击中的元素上找不到目标时，继续向上查找</param>
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/// <param name="overrideEventSystem"></param>
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/// <typeparam name="T"></typeparam>
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/// <returns></returns>
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public static bool IsPointerOverUIWithComponent<T>(out T component, bool compatibility = true, EventSystem overrideEventSystem = null)
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where T : Component
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{
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var results = GetRaycastAllResults(overrideEventSystem);
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if (results.Count <= 0)
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{
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component = null;
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return false;
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}
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component = results
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.Select(a => a.gameObject.GetComponent<T>())
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.FirstOrDefault(a => a != null);
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if (compatibility && component == null)
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component = results[^1].gameObject.GetComponentInParent<T>();
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return component != null;
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}
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#endregion
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}
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} |