224 lines
6.6 KiB
C#
224 lines
6.6 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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using System.Text.RegularExpressions;
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using UnityEngine;
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using UnityEngine.Events;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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/// <summary>
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/// 文本控件,支持超链接
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/// </summary>
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public class HyperlinkText : Text, IPointerClickHandler
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{
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/// <summary>
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/// 超链接信息类
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/// </summary>
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private class HyperlinkInfo
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{
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public int startIndex;
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public int endIndex;
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public string name;
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public readonly List<Rect> boxes = new List<Rect>();
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}
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/// <summary>
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/// 解析完最终的文本
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/// </summary>
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private string m_OutputText;
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/// <summary>
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/// 超链接信息列表
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/// </summary>
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private readonly List<HyperlinkInfo> m_HrefInfos = new List<HyperlinkInfo>();
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/// <summary>
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/// 文本构造器
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/// </summary>
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protected static readonly StringBuilder s_TextBuilder = new StringBuilder();
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[Serializable]
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public class HrefClickEvent : UnityEvent<string> { }
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[SerializeField]
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private HrefClickEvent m_OnHrefClick = new HrefClickEvent();
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/// <summary>
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/// 超链接点击事件
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/// </summary>
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public HrefClickEvent onHrefClick
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{
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get { return m_OnHrefClick; }
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set { m_OnHrefClick = value; }
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}
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/// <summary>
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/// 超链接正则
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/// </summary>
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private static readonly Regex s_HrefRegex = new Regex(@"<a href=([^>\n\s]+)>(.*?)(</a>)", RegexOptions.Singleline);
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private HyperlinkText mHyperlinkText;
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protected override void Awake()
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{
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base.Awake();
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mHyperlinkText = GetComponent<HyperlinkText>();
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}
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protected override void OnEnable()
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{
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base.OnEnable();
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mHyperlinkText.onHrefClick.AddListener(OnHyperlinkTextInfo);
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}
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protected override void OnDisable()
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{
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base.OnDisable();
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mHyperlinkText.onHrefClick.RemoveListener(OnHyperlinkTextInfo);
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}
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public override void SetVerticesDirty()
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{
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base.SetVerticesDirty();
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#if UNITY_EDITOR
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if (UnityEditor.PrefabUtility.GetPrefabType(this) == UnityEditor.PrefabType.Prefab)
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{
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return;
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}
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#endif
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m_OutputText = GetOutputText(text);
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}
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protected override void OnPopulateMesh(VertexHelper toFill)
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{
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var orignText = m_Text;
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m_Text = m_OutputText;
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base.OnPopulateMesh(toFill);
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m_Text = orignText;
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UIVertex vert = new UIVertex();
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// 处理超链接包围框
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foreach (var hrefInfo in m_HrefInfos)
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{
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hrefInfo.boxes.Clear();
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if (hrefInfo.startIndex >= toFill.currentVertCount)
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{
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//continue;
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}
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// 将超链接里面的文本顶点索引坐标加入到包围框
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toFill.PopulateUIVertex(ref vert, hrefInfo.startIndex);
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var pos = vert.position;
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var bounds = new Bounds(pos, Vector3.zero);
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for (int i = hrefInfo.startIndex, m = hrefInfo.endIndex; i < m; i++)
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{
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if (i >= toFill.currentVertCount)
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{
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break;
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}
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toFill.PopulateUIVertex(ref vert, i);
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pos = vert.position;
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if (pos.x < bounds.min.x) // 换行重新添加包围框
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{
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hrefInfo.boxes.Add(new Rect(bounds.min, bounds.size));
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bounds = new Bounds(pos, Vector3.zero);
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}
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else
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{
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bounds.Encapsulate(pos); // 扩展包围框
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}
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}
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hrefInfo.boxes.Add(new Rect(bounds.min, bounds.size));
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}
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}
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/// <summary>
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/// 获取超链接解析后的最后输出文本
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/// </summary>
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/// <returns></returns>
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protected virtual string GetOutputText(string outputText)
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{
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s_TextBuilder.Length = 0;
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m_HrefInfos.Clear();
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var indexText = 0;
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foreach (Match match in s_HrefRegex.Matches(outputText))
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{
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s_TextBuilder.Append(outputText.Substring(indexText, match.Index - indexText));
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string str = s_TextBuilder.ToString();
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char[] array = str.ToCharArray(); //把字符串转化成字符数组
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IEnumerator enumerator = array.GetEnumerator(); //得到枚举器
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StringBuilder stringBuilder = new StringBuilder();
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while (enumerator.MoveNext()) //开始枚举
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{
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if ((char)enumerator.Current != ' ') //向StringBuilder类对象添加非空格字符
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stringBuilder.Append(enumerator.Current.ToString());
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}
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var group = match.Groups[1];
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var hrefInfo = new HyperlinkInfo
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{
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startIndex = stringBuilder.Length * 4, // 超链接里的文本起始顶点索引
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endIndex = (stringBuilder.Length + match.Groups[2].Length - 1) * 4 + 3,
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name = group.Value
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};
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m_HrefInfos.Add(hrefInfo);
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s_TextBuilder.Append("<color=blue>"); // 超链接颜色
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s_TextBuilder.Append(match.Groups[2].Value);
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s_TextBuilder.Append("</color>");
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indexText = match.Index + match.Length;
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}
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s_TextBuilder.Append(outputText.Substring(indexText, outputText.Length - indexText));
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return s_TextBuilder.ToString();
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}
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/// <summary>
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/// 点击事件检测是否点击到超链接文本
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/// </summary>
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/// <param name="eventData"></param>
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public void OnPointerClick(PointerEventData eventData)
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{
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Vector2 lp = Vector2.zero;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(rectTransform, eventData.position, eventData.pressEventCamera, out lp);
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foreach (var hrefInfo in m_HrefInfos)
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{
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var boxes = hrefInfo.boxes;
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for (var i = 0; i < boxes.Count; ++i)
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{
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if (boxes[i].Contains(lp))
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{
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m_OnHrefClick.Invoke(hrefInfo.name);
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Debug.Log("sssssssssssssssssssss");
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return;
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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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/// 当前点击超链接回调
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/// </summary>
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/// <param name="info">回调信息</param>
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private void OnHyperlinkTextInfo(string info)
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{
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Debug.Log("超链接信息:" + info);
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Application.OpenURL(info);
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}
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}
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