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Unity UGUI图文混排(六) -- 超链接

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图文混排更新到超链接这儿,好像也差不多了,不过就在最后一点,博主也表现得相当不专业,直接整合了山中双木林同学提供的超链接的解决方案,博主甚至没来得及细看就直接复制了,但感觉还是挺好用的。

博主已经将超链接的功能直接整合到了之前的InlineText和InlineSpriteText的两个脚本中


1.定义超链接的正则表达式和事件监听

#region 超链接
    /// <summary>
    /// 超链接信息列表
    /// </summary>
    private readonly List<HrefInfo> m_HrefInfos = new List<HrefInfo>();

    /// <summary>
    /// 文本构造器
    /// </summary>
    private static readonly StringBuilder s_TextBuilder = new StringBuilder();

    /// <summary>
    /// 超链接正则
    /// </summary>
    private static readonly Regex s_HrefRegex =
        new Regex(@"<a href=([^>\n\s]+)>(.*?)(</a>)", RegexOptions.Singleline);

    [System.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>
    /// 获取超链接解析后的最后输出文本
    /// </summary>
    /// <returns></returns>
    protected string GetOutputText()
    {
        s_TextBuilder.Length = 0;
        m_HrefInfos.Clear();
        var indexText = 0;
        foreach (Match match in s_HrefRegex.Matches(text))
        {
            s_TextBuilder.Append(text.Substring(indexText, match.Index - indexText));
            s_TextBuilder.Append("<color=blue>");  // 超链接颜色

            var group = match.Groups[1];
            var hrefInfo = new HrefInfo
            {
                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(text.Substring(indexText, text.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;
        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>
    /// 超链接信息类
    /// </summary>
    private class HrefInfo
    {
        public int startIndex;

        public int endIndex;

        public string name;

        public readonly List<Rect> boxes = new List<Rect>();
    }
    #endregion
2.在文本绘制完成后处理超链接的包围盒

 #region 处理超链接的包围盒
        // 处理超链接包围框
        UIVertex vert = new UIVertex();
        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));
        }
        #endregion
3.看一下文中中超链接的输入规则


4.简单写了一个测试脚本,用来监听点击事件

using UnityEngine;
using System.Collections;

public class TestClickInlineText : MonoBehaviour {
    private InlieText _text;
    
    void Awake()
    {
        _text = GetComponent<InlieText>();
    }

    void OnEnable()
    {
        _text.onHrefClick.AddListener(OnHrefClick);
    }

    void OnDisable()
    {
        _text.onHrefClick.RemoveListener(OnHrefClick);
    }

    private void OnHrefClick(string hrefName)
    {
        Debug.Log("点击了 " + hrefName);
      //  Application.OpenURL("www.baidu.com");
    }
}
5.运行截图:


6.更新速度实在太慢,为了早点完结图文混排,这里的功能是复制的,有什么疑问的话,可以再讨论,这里的功能也就更新得差不多了,最后再给一个最新的源码链接,短时间没有特殊的功能或者bug,就不打算再更新了

工程源码链接:https://github.com/coding2233/TextInlineSprite


作者:qq992817263 发表于2016/10/25 11:14:44 原文链接
阅读:141 评论:0 查看评论

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