397 lines
14 KiB
C#
397 lines
14 KiB
C#
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/// Credit drobina, w34edrtfg, playemgames
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/// Sourced from - http://forum.unity3d.com/threads/sprite-icons-with-text-e-g-emoticons.265927/
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using System;
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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.Events;
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using UnityEngine.EventSystems;
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namespace UnityEngine.UI.Extensions
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{
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// Image according to the label inside the name attribute to load, read from the Resources directory. The size of the image is controlled by the size property.
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// Use: <quad name=NAME size=25 width=1 />
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public class TextPic : Text, IPointerClickHandler, IPointerExitHandler, IPointerEnterHandler, ISelectHandler
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{
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/// <summary>
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/// Image Pool
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/// </summary>
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private readonly List<Image> m_ImagesPool = new List<Image>();
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/// <summary>
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/// Vertex Index
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/// </summary>
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private readonly List<int> m_ImagesVertexIndex = new List<int>();
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/// <summary>
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/// Regular expression to replace
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/// </summary>
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private static readonly Regex s_Regex =
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new Regex(@"<quad name=(.+?) size=(\d*\.?\d+%?) width=(\d*\.?\d+%?) />", RegexOptions.Singleline);
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private string fixedString;
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public override void SetVerticesDirty()
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{
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base.SetVerticesDirty();
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UpdateQuadImage();
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}
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/// <summary>
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/// After parsing the final text
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/// </summary>
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private string m_OutputText;
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[System.Serializable]
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public struct IconName
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{
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public string name;
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public Sprite sprite;
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}
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public IconName[] inspectorIconList;
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private Dictionary<string, Sprite> iconList = new Dictionary<string, Sprite>();
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public float ImageScalingFactor = 1;
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// Write the name or hex value of the hyperlink color
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public string hyperlinkColor = "blue";
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// Offset image by x, y
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[SerializeField]
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public Vector2 imageOffset = Vector2.zero;
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private Button button;
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//Commented out as private and not used.. Yet?
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//private bool selected = false;
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private List<Vector2> positions = new List<Vector2>();
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/**
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* Unity Inspector cant display Dictionary vars,
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* so we use this little hack to setup the iconList
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*/
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new void Start()
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{
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button = GetComponent<Button>();
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if (inspectorIconList != null && inspectorIconList.Length > 0)
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{
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foreach (IconName icon in inspectorIconList)
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{
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Debug.Log(icon.sprite.name);
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iconList.Add(icon.name, icon.sprite);
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}
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}
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}
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protected void UpdateQuadImage()
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{
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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();
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m_ImagesVertexIndex.Clear();
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foreach (Match match in s_Regex.Matches(m_OutputText))
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{
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var picIndex = match.Index;
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var endIndex = picIndex * 4 + 3;
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m_ImagesVertexIndex.Add(endIndex);
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m_ImagesPool.RemoveAll(image => image == null);
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if (m_ImagesPool.Count == 0)
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{
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GetComponentsInChildren<Image>(m_ImagesPool);
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}
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if (m_ImagesVertexIndex.Count > m_ImagesPool.Count)
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{
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var resources = new DefaultControls.Resources();
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var go = DefaultControls.CreateImage(resources);
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go.layer = gameObject.layer;
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var rt = go.transform as RectTransform;
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if (rt)
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{
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rt.SetParent(rectTransform);
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rt.localPosition = Vector3.zero;
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rt.localRotation = Quaternion.identity;
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rt.localScale = Vector3.one;
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}
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m_ImagesPool.Add(go.GetComponent<Image>());
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}
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var spriteName = match.Groups[1].Value;
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//var size = float.Parse(match.Groups[2].Value);
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var img = m_ImagesPool[m_ImagesVertexIndex.Count - 1];
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if (img.sprite == null || img.sprite.name != spriteName)
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{
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// img.sprite = Resources.Load<Sprite>(spriteName);
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if (inspectorIconList != null && inspectorIconList.Length > 0)
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{
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foreach (IconName icon in inspectorIconList)
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{
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if (icon.name == spriteName)
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{
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img.sprite = icon.sprite;
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break;
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}
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}
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}
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}
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img.rectTransform.sizeDelta = new Vector2(fontSize * ImageScalingFactor, fontSize * ImageScalingFactor);
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img.enabled = true;
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if (positions.Count == m_ImagesPool.Count)
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{
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img.rectTransform.anchoredPosition = positions[m_ImagesVertexIndex.Count - 1];
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}
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}
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for (var i = m_ImagesVertexIndex.Count; i < m_ImagesPool.Count; i++)
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{
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if (m_ImagesPool[i])
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{
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m_ImagesPool[i].enabled = false;
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}
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}
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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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positions.Clear();
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UIVertex vert = new UIVertex();
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for (var i = 0; i < m_ImagesVertexIndex.Count; i++)
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{
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var endIndex = m_ImagesVertexIndex[i];
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var rt = m_ImagesPool[i].rectTransform;
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var size = rt.sizeDelta;
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if (endIndex < toFill.currentVertCount)
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{
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toFill.PopulateUIVertex(ref vert, endIndex);
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positions.Add(new Vector2((vert.position.x + size.x / 2), (vert.position.y + size.y / 2)) + imageOffset);
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// Erase the lower left corner of the black specks
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toFill.PopulateUIVertex(ref vert, endIndex - 3);
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var pos = vert.position;
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for (int j = endIndex, m = endIndex - 3; j > m; j--)
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{
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toFill.PopulateUIVertex(ref vert, endIndex);
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vert.position = pos;
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toFill.SetUIVertex(vert, j);
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}
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}
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}
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if (m_ImagesVertexIndex.Count != 0)
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{
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m_ImagesVertexIndex.Clear();
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}
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// Hyperlinks surround processing box
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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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// Hyperlink inside the text is added to surround the vertex index coordinate frame
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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) // Wrap re-add surround frame
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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); // Extended enclosed box
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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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/// Hyperlink List
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/// </summary>
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private readonly List<HrefInfo> m_HrefInfos = new List<HrefInfo>();
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/// <summary>
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/// Text Builder
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/// </summary>
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private static readonly StringBuilder s_TextBuilder = new StringBuilder();
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/// <summary>
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/// Hyperlink Regular Expression
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/// </summary>
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private static readonly Regex s_HrefRegex =
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new Regex(@"<a href=([^>\n\s]+)>(.*?)(</a>)", RegexOptions.Singleline);
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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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/// Hyperlink Click Event
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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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/// Finally, the output text hyperlinks get parsed
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/// </summary>
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/// <returns></returns>
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protected string GetOutputText()
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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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fixedString = this.text;
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if (inspectorIconList != null && inspectorIconList.Length > 0)
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{
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foreach (IconName icon in inspectorIconList)
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{
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if (icon.name != null && icon.name != "")
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{
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fixedString = fixedString.Replace(icon.name, "<quad name=" + icon.name + " size=" + fontSize + " width=1 />");
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}
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}
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}
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foreach (Match match in s_HrefRegex.Matches(fixedString))
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{
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s_TextBuilder.Append(fixedString.Substring(indexText, match.Index - indexText));
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s_TextBuilder.Append("<color=" + hyperlinkColor + ">"); // Hyperlink color
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var group = match.Groups[1];
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var hrefInfo = new HrefInfo
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{
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startIndex = s_TextBuilder.Length * 4, // Hyperlinks in text starting vertex indices
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endIndex = (s_TextBuilder.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(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(fixedString.Substring(indexText, fixedString.Length - indexText));
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return s_TextBuilder.ToString();
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}
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/// <summary>
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/// Click event is detected whether to click a hyperlink text
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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;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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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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return;
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}
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}
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}
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}
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public void OnPointerEnter(PointerEventData eventData)
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{
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//do your stuff when highlighted
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//selected = true;
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if (m_ImagesPool.Count >= 1)
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{
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foreach (Image img in m_ImagesPool)
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{
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if (button != null && button.isActiveAndEnabled)
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{
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img.color = button.colors.highlightedColor;
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}
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}
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}
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}
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public void OnPointerExit(PointerEventData eventData)
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{
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//do your stuff when highlighted
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//selected = false;
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if (m_ImagesPool.Count >= 1)
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{
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foreach (Image img in m_ImagesPool)
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{
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if (button != null && button.isActiveAndEnabled)
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{
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img.color = button.colors.normalColor;
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}
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else
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{
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img.color = color;
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}
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}
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}
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}
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public void OnSelect(BaseEventData eventData)
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{
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//do your stuff when selected
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//selected = true;
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if (m_ImagesPool.Count >= 1)
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{
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foreach (Image img in m_ImagesPool)
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{
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if (button != null && button.isActiveAndEnabled)
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{
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img.color = button.colors.highlightedColor;
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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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/// Hyperlinks Info
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/// </summary>
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private class HrefInfo
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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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}
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}
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