using Cysharp.Threading.Tasks;
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using UnityEngine;
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using UnityEngine.UI;
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/// <summary>
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/// 文本提示界面：外部传入文本内容和世界坐标系位置
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/// </summary>
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public class SmallTipWin : UIBase
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{
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[SerializeField] RectTransform rectTransform;
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[SerializeField] RectTransform arrowImage;
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[SerializeField] RectTransform arrowUpImage;
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[SerializeField] Text descText;
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public static Vector3 worldPos; //世界坐标系位置
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public static string showText;
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public static bool isDownShow = false; // 是否向下显示
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protected override void OnPreOpen()
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{
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descText.text = showText;
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rectTransform.position = new Vector3(100, 100, 100); //初始化时，屏幕范围外
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arrowImage.SetActive(!isDownShow);
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arrowUpImage.SetActive(isDownShow);
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}
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protected override void OnPreClose()
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{
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isDownShow = false;
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}
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protected override void OnOpen()
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{
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UpdatePos().Forget();
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}
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async UniTask UpdatePos()
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{
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await UniTask.DelayFrame(3);
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// 限制在屏幕范围内
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Vector3[] corners = new Vector3[4];
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rectTransform.GetWorldCorners(corners);
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float minY = corners[0].y;
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float maxY = corners[0].y;
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for (int i = 1; i < corners.Length; i++)
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{
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if (corners[i].y < minY) minY = corners[i].y;
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if (corners[i].y > maxY) maxY = corners[i].y;
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}
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float screenHeight = maxY - minY;
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Vector2 adjustedPos = new Vector2(worldPos.x, worldPos.y + (!isDownShow ? screenHeight * 0.5f : -screenHeight * 0.5f));
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Vector2 screenAdjustedPos = CameraManager.uiCamera.WorldToScreenPoint(adjustedPos);
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var rectWidth = rectTransform.rect.width * Screen.width / canvasScaler.referenceResolution.x;
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screenAdjustedPos.x = Mathf.Clamp(screenAdjustedPos.x, rectWidth * 0.5f, Screen.width - rectWidth * 0.5f);
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screenAdjustedPos.y = Mathf.Clamp(screenAdjustedPos.y, rectTransform.rect.height * 0.5f, Screen.height - rectTransform.rect.height * 0.5f - 15);
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adjustedPos = CameraManager.uiCamera.ScreenToWorldPoint(screenAdjustedPos);
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rectTransform.position = adjustedPos;
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if (!isDownShow)
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{
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rectTransform.localPosition = new Vector3(rectTransform.localPosition.x, rectTransform.localPosition.y + 15, rectTransform.localPosition.z);
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}
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else
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{
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rectTransform.localPosition = new Vector3(rectTransform.localPosition.x, rectTransform.localPosition.y - 15, rectTransform.localPosition.z);
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}
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rectTransform.GetWorldCorners(corners);
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float minX = corners[0].x;
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float maxX = corners[0].x;
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for (int i = 1; i < corners.Length; i++)
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{
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if (corners[i].x < minX) minX = corners[i].x;
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if (corners[i].x > maxX) maxX = corners[i].x;
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}
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//显示arrowImage 的x轴上的位置，和worldPos同步，但不超过minX 和 maxX范围
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if (!isDownShow)
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{
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Vector3 arrowImagePosition = arrowImage.position;
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arrowImagePosition.x = Mathf.Clamp(worldPos.x, minX, maxX);
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arrowImage.position = arrowImagePosition;
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}
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else
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{
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Vector3 arrowUpImagePosition = arrowUpImage.position;
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arrowUpImagePosition.x = Mathf.Clamp(worldPos.x, minX, maxX);
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arrowUpImage.position = arrowUpImagePosition;
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}
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}
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}
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