测试语句:哈哈<a href=www.skill.com>[技能]</a>这也可以
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using UnityEngine.UI;
/// <summary>
/// 文本控件,支持超链接
/// </summary>
public class HyperlinkText : Text, IPointerClickHandler
{
/// <summary>
/// 超链接信息类
/// </summary>
private class HyperlinkInfo
{
public int startIndex;
public int endIndex;
public string name;
public readonly List<Rect> boxes = new List<Rect>();
}
/// <summary>
/// 解析完最终的文本
/// </summary>
private string m_OutputText;
/// <summary>
/// 超链接信息列表
/// </summary>
private readonly List<HyperlinkInfo> m_HrefInfos = new List<HyperlinkInfo>();
/// <summary>
/// 文本构造器
/// </summary>
protected static readonly StringBuilder s_TextBuilder = new StringBuilder();
[Serializable]
public class HrefClickEvent : UnityEvent<string> { }
[SerializeField]
private HrefClickEvent m_OnHrefClick = new HrefClickEvent();
/// <summary>
/// 超链接点击事件
/// </summary>
public HrefClickEvent onHrefClick
{
get { return m_OnHrefClick; }
set { m_OnHrefClick = value; }
}
/// <summary>
/// 超链接正则
/// </summary>
private static readonly Regex s_HrefRegex = new Regex(@"<a href=([^>\n\s]+)>(.*?)(</a>)", RegexOptions.Singleline);
private HyperlinkText mHyperlinkText;
[SerializeField]
public string mLink = "www.baidu.com";
[SerializeField]
public string mName = "百度";
public string GetHyperlinkInfo
{
get { return string.Format("<a href={0:link}>[{1:name}]</a>", mLink, mName); }
}
protected override void Awake()
{
base.Awake();
mHyperlinkText = GetComponent<HyperlinkText>();
}
protected override void OnEnable()
{
base.OnEnable();
mHyperlinkText.onHrefClick.AddListener(OnHyperlinkTextInfo);
}
protected override void OnDisable()
{
base.OnDisable();
mHyperlinkText.onHrefClick.RemoveListener(OnHyperlinkTextInfo);
}
public override void SetVerticesDirty()
{
base.SetVerticesDirty();
#if UNITY_EDITOR
if (UnityEditor.PrefabUtility.GetPrefabType(this) == UnityEditor.PrefabType.Prefab)
{
return;
}
#endif
// m_OutputText = GetOutputText(text);
text = GetHyperlinkInfo;
m_OutputText = GetOutputText(text);
}
protected override void OnPopulateMesh(VertexHelper toFill)
{
var orignText = m_Text;
m_Text = m_OutputText;
base.OnPopulateMesh(toFill);
m_Text = orignText;
UIVertex vert = new UIVertex();
// 处理超链接包围框
foreach (var hrefInfo in m_HrefInfos)
{
hrefInfo.boxes.Clear();
if (hrefInfo.startIndex >= toFill.currentVertCount)
{
continue;
}
// 将超链接里面的文本顶点索引坐标加入到包围框
toFill.PopulateUIVertex(ref vert, hrefInfo.startIndex);
var pos = vert.position;
var bounds = new Bounds(pos, Vector3.zero);
for (int i = hrefInfo.startIndex, m = hrefInfo.endIndex; i < m; i++)
{
if (i >= toFill.currentVertCount)
{
break;
}
toFill.PopulateUIVertex(ref vert, i);
pos = vert.position;
if (pos.x < bounds.min.x) // 换行重新添加包围框
{
hrefInfo.boxes.Add(new Rect(bounds.min, bounds.size));
bounds = new Bounds(pos, Vector3.zero);
}
else
{
bounds.Encapsulate(pos); // 扩展包围框
}
}
hrefInfo.boxes.Add(new Rect(bounds.min, bounds.size));
}
}
/// <summary>
/// 获取超链接解析后的最后输出文本
/// </summary>
/// <returns></returns>
protected virtual string GetOutputText(string outputText)
{
s_TextBuilder.Length = 0;
m_HrefInfos.Clear();
var indexText = 0;
foreach (Match match in s_HrefRegex.Matches(outputText))
{
s_TextBuilder.Append(outputText.Substring(indexText, match.Index - indexText));
s_TextBuilder.Append("<color=blue>"); // 超链接颜色
var group = match.Groups[1];
var hrefInfo = new HyperlinkInfo
{
startIndex = s_TextBuilder.Length * 4, // 超链接里的文本起始顶点索引
endIndex = (s_TextBuilder.Length + match.Groups[2].Length - 1) * 4 + 3,
name = group.Value
};
m_HrefInfos.Add(hrefInfo);
s_TextBuilder.Append(match.Groups[2].Value);
s_TextBuilder.Append("</color>");
indexText = match.Index + match.Length;
}
s_TextBuilder.Append(outputText.Substring(indexText, outputText.Length - indexText));
return s_TextBuilder.ToString();
}
/// <summary>
/// 点击事件检测是否点击到超链接文本
/// </summary>
/// <param name="eventData"></param>
public void OnPointerClick(PointerEventData eventData)
{
Vector2 lp = Vector2.zero;
RectTransformUtility.ScreenPointToLocalPointInRectangle(rectTransform, eventData.position, eventData.pressEventCamera, out lp);
foreach (var hrefInfo in m_HrefInfos)
{
var boxes = hrefInfo.boxes;
for (var i = 0; i < boxes.Count; ++i)
{
if (boxes[i].Contains(lp))
{
m_OnHrefClick.Invoke(hrefInfo.name);
return;
}
}
}
}
/// <summary>
/// 当前点击超链接回调
/// </summary>
/// <param name="info">回调信息</param>
private void OnHyperlinkTextInfo(string info)
{
Debug.Log("超链接信息:" + info);
}
}