302 lines
7.6 KiB
C#
302 lines
7.6 KiB
C#
using System.Collections.Generic;
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using TMPro;
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using UnityEngine;
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using UnityEngine.UI;
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namespace XericUI.XTable.Rendering.Elements
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{
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/// <summary>
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/// 表格单元动态拼装器——通过对象池管理 Image + TMP_Text 的组合创建与回收。
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/// 所有元素统一使用 anchor=(0,1) pivot=(0,1) 左上角坐标系。
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/// 所有动态生成对象标记 HideFlags.DontSave | HideFlags.HideInHierarchy，防止泄漏到场景。
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/// </summary>
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public class CellAssembler
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{
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#region 对象池定义
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public class PooledImage
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{
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public GameObject Root;
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public RectTransform Rect;
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public Image Image;
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public StyleBoundElement Style;
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}
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public class PooledText
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{
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public GameObject Root;
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public RectTransform Rect;
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public TMP_Text Text;
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public StyleBoundElement Style;
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}
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#endregion
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#region 字段
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private Transform m_Parent;
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private Transform m_PoolRoot;
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/// <summary>池根节点（所有回收对象均挂在此节点下，节点本身处于 inactive）</summary>
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public Transform PoolRoot => m_PoolRoot;
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/// <summary>运行时的默认样式命名空间（编辑器下为 null，不绑定）</summary>
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private string m_DefaultStyleNamespace;
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/// <summary>所有已绑定的 StyleBoundElement 回调集合（用于样式变更时通知外部）</summary>
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public event System.Action OnStyleChangeDetected;
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private Stack<PooledImage> m_ImagePool = new Stack<PooledImage>();
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private Stack<PooledText> m_TextPool = new Stack<PooledText>();
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private List<PooledImage> m_ActiveImages = new List<PooledImage>();
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private List<PooledText> m_ActiveTexts = new List<PooledText>();
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/// <summary>HideFlags 应用于所有动态创建的对象（不保存、不在 Hierarchy 显示）</summary>
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private const HideFlags POOL_FLAGS = HideFlags.DontSave | HideFlags.HideInHierarchy;
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#endregion
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#region 构造函数与析构
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public CellAssembler(Transform parent, string defaultStyleNamespace = null)
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{
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m_Parent = parent;
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m_DefaultStyleNamespace = defaultStyleNamespace;
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GameObject poolRoot = new GameObject("_CellPool");
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poolRoot.hideFlags = POOL_FLAGS;
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poolRoot.transform.SetParent(parent, false);
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poolRoot.SetActive(false);
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m_PoolRoot = poolRoot.transform;
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}
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/// <summary>彻底销毁所有池对象（包括活跃和休眠的）</summary>
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public void DestroyAll()
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{
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// 杀死活跃对象
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for (int i = m_ActiveImages.Count - 1; i >= 0; i--)
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{
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KillObject(m_ActiveImages[i].Root);
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}
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m_ActiveImages.Clear();
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for (int i = m_ActiveTexts.Count - 1; i >= 0; i--)
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{
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KillObject(m_ActiveTexts[i].Root);
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}
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m_ActiveTexts.Clear();
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// 杀死池中对象
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while (m_ImagePool.Count > 0)
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{
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KillObject(m_ImagePool.Pop().Root);
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}
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while (m_TextPool.Count > 0)
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{
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KillObject(m_TextPool.Pop().Root);
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}
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// 杀死池根
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if (m_PoolRoot != null)
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{
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KillObject(m_PoolRoot.gameObject);
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m_PoolRoot = null;
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}
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}
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private static void KillObject(GameObject go)
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{
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if (go == null) return;
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if (Application.isPlaying)
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Object.Destroy(go);
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else
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Object.DestroyImmediate(go);
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}
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#endregion
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#region 常量
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private static readonly Vector2 ANCHOR_TOPLEFT_MIN = new Vector2(0, 1);
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private static readonly Vector2 ANCHOR_TOPLEFT_MAX = new Vector2(0, 1);
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private static readonly Vector2 PIVOT_TOPLEFT = new Vector2(0, 1);
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#endregion
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#region 池操作
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public PooledImage GetImage(string name = "cell_img", string styleNamespace = null)
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{
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PooledImage item;
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if (m_ImagePool.Count > 0)
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{
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item = m_ImagePool.Pop();
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item.Root.SetActive(true);
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item.Root.transform.SetParent(m_Parent, false);
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ResetImageDefaults(item);
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}
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else
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{
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item = CreateImage(name);
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}
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BindStyle(item.Style, styleNamespace);
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m_ActiveImages.Add(item);
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return item;
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}
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public PooledText GetText(string name = "cell_text", string styleNamespace = null)
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{
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PooledText item;
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if (m_TextPool.Count > 0)
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{
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item = m_TextPool.Pop();
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item.Root.SetActive(true);
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item.Root.transform.SetParent(m_Parent, false);
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ResetTextDefaults(item);
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}
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else
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{
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item = CreateText(name);
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}
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BindStyle(item.Style, styleNamespace);
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m_ActiveTexts.Add(item);
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return item;
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}
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/// <summary>运行时绑定样式到池元素的 StyleBoundElement，实现被动更新（push）</summary>
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private void BindStyle(StyleBoundElement style, string cellNamespace)
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{
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if (!Application.isPlaying) return;
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string ns = cellNamespace ?? m_DefaultStyleNamespace;
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if (string.IsNullOrEmpty(ns)) return;
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if (style != null && style.BoundNamespace != ns)
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{
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style.OnStyleChangedCallback -= OnStyleChangedNotify;
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style.OnStyleChangedCallback += OnStyleChangedNotify;
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style.Bind(ns);
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}
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}
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private void OnStyleChangedNotify()
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{
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OnStyleChangeDetected?.Invoke();
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}
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public void ReturnAll()
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{
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foreach (var img in m_ActiveImages) ReturnImage(img);
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m_ActiveImages.Clear();
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foreach (var txt in m_ActiveTexts) ReturnText(txt);
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m_ActiveTexts.Clear();
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}
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private void ReturnImage(PooledImage item)
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{
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item.Style?.Unbind();
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item.Root.SetActive(false);
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item.Root.transform.SetParent(m_PoolRoot, false);
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m_ImagePool.Push(item);
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}
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private void ReturnText(PooledText item)
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{
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item.Style?.Unbind();
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item.Text.text = "";
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item.Root.SetActive(false);
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item.Root.transform.SetParent(m_PoolRoot, false);
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m_TextPool.Push(item);
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}
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#endregion
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#region 默认值重置
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private void ResetImageDefaults(PooledImage item)
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{
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item.Rect.anchorMin = ANCHOR_TOPLEFT_MIN;
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item.Rect.anchorMax = ANCHOR_TOPLEFT_MAX;
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item.Rect.pivot = PIVOT_TOPLEFT;
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item.Rect.anchoredPosition = Vector2.zero;
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item.Rect.sizeDelta = Vector2.zero;
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item.Image.color = Color.white;
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item.Image.sprite = null;
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item.Image.raycastTarget = false;
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}
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private void ResetTextDefaults(PooledText item)
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{
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item.Rect.anchorMin = ANCHOR_TOPLEFT_MIN;
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item.Rect.anchorMax = ANCHOR_TOPLEFT_MAX;
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item.Rect.pivot = PIVOT_TOPLEFT;
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item.Rect.anchoredPosition = Vector2.zero;
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item.Rect.sizeDelta = Vector2.zero;
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item.Text.text = "";
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item.Text.color = Color.black;
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item.Text.fontSize = 14;
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item.Text.alignment = TextAlignmentOptions.Midline;
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item.Text.raycastTarget = false;
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}
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#endregion
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#region 创建
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private PooledImage CreateImage(string name)
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{
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GameObject go = new GameObject(name,
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typeof(RectTransform), typeof(CanvasRenderer), typeof(Image));
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go.hideFlags = POOL_FLAGS;
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go.transform.SetParent(m_Parent, false);
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Image img = go.GetComponent<Image>();
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img.raycastTarget = false;
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RectTransform rect = go.GetComponent<RectTransform>();
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rect.anchorMin = ANCHOR_TOPLEFT_MIN;
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rect.anchorMax = ANCHOR_TOPLEFT_MAX;
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rect.pivot = PIVOT_TOPLEFT;
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return new PooledImage
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{
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Root = go,
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Rect = rect,
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Image = img,
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Style = new StyleBoundElement { ImageComponent = img }
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};
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}
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private PooledText CreateText(string name)
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{
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GameObject go = new GameObject(name,
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typeof(RectTransform), typeof(CanvasRenderer), typeof(TextMeshProUGUI));
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go.hideFlags = POOL_FLAGS;
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go.transform.SetParent(m_Parent, false);
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TMP_Text text = go.GetComponent<TMP_Text>();
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text.raycastTarget = false;
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text.alignment = TextAlignmentOptions.Midline;
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text.fontSize = 14;
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RectTransform rect = go.GetComponent<RectTransform>();
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rect.anchorMin = ANCHOR_TOPLEFT_MIN;
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rect.anchorMax = ANCHOR_TOPLEFT_MAX;
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rect.pivot = PIVOT_TOPLEFT;
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return new PooledText
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{
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Root = go,
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Rect = rect,
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Text = text,
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Style = new StyleBoundElement { TextComponent = text }
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};
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}
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#endregion
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}
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}
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