125 lines
3.5 KiB
C#
125 lines
3.5 KiB
C#
using UnityEngine.UI;
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using static UnityEngine.UI.ContentSizeFitter;
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using UnityEngine;
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using TMPro;
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/// <summary>
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/// 更改背景颜色，填充文字，更改文本大小，更改背景大小
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/// </summary>
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public class BackgroundLabel : MonoBehaviour
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{
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public Transform mouseTarget;
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public SpriteRenderer instructTextBackground;
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public TextMeshPro textMeshPro;
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public Sprite rectangle;
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public Sprite roundedRectangle;
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public Sprite gradientRectangle;
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public float marginHorizontal;
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public float marginVertical;
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public int shortTextCount = 4;
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private bool shortable => shortTextCount > 1 && !string.IsNullOrWhiteSpace(_text) && _text.Length > shortTextCount;
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private bool _fullText;
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public bool fullText
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{
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set
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{
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if (_fullText == value) return;
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_fullText = value;
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ShowText();
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}
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}
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private static Camera _camera;
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private string _text;
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// Start is called before the first frame update
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private void Update()
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{
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if (!shortable) return;
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if (Physics.Raycast(_camera.ScreenPointToRay(Input.mousePosition), out var hit))
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{
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fullText = hit.transform == mouseTarget;
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}
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}
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public void Init(string text, bool showBackground)
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{
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_text = text;
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if (_camera == null) _camera = Camera.main;
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//
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if (!showBackground)
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{
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instructTextBackground.gameObject.SetActive(false);
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}
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else
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{
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// if (string.IsNullOrEmpty(text))
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// {
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// text = labelInfo.text;
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// }
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//非渐变
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instructTextBackground.sprite = rectangle;
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instructTextBackground.color = Color.white;
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instructTextBackground.gameObject.AddComponent<MeshCollider>().convex = true;
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}
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textMeshPro.gameObject.AddComponent<MeshCollider>().convex = true;
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ShowText();
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}
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private void ShowText()
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{
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if (string.IsNullOrWhiteSpace(_text))
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{
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textMeshPro.gameObject.SetActive(false);
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}
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else
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{
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//Debug.Log($"{_fullText} ==== {_text.Length} / {shortTextCount}");
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if (_fullText || shortTextCount <= 1 || _text.Length <= shortTextCount)
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textMeshPro.text = _text;
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else
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textMeshPro.text = $"{_text.Substring(0, shortTextCount - 1)}…";
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instructTextBackground.size = GetPreferredSize();
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}
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}
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public void SetPosition(Vector3 pos)
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{
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textMeshPro.transform.localPosition = pos;//new Vector3(0, y + 4f, 0);
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}
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public void SetAlignment()
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{
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textMeshPro.alignment = TextAlignmentOptions.Bottom;
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}
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//立即获取ContentSizeFitter的区域
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public Vector2 GetPreferredSize()
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{
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LayoutRebuilder.ForceRebuildLayoutImmediate(textMeshPro.GetComponent<RectTransform>());
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return new Vector2((HandleSelfFittingAlongAxis(0)) + marginHorizontal, (HandleSelfFittingAlongAxis(1)) + marginVertical);
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}
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public float HandleSelfFittingAlongAxis(int axis)
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{
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ContentSizeFitter c = textMeshPro.GetComponent<ContentSizeFitter>();
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RectTransform r = textMeshPro.GetComponent<RectTransform>();
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FitMode fitting = (axis == 0 ? c.horizontalFit : c.verticalFit);
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if (fitting == FitMode.MinSize)
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{
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return LayoutUtility.GetMinSize(r, axis);
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}
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else
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{
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return LayoutUtility.GetPreferredSize(r, axis);
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}
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}
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}
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