249 lines
8.5 KiB
C#
249 lines
8.5 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using UnityEngine;
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using UnityEngine.UI;
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using Debug = UnityEngine.Debug;
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namespace XUI {
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public class UIStack : UIPool {
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[Tooltip("是否为每个组创建一个物体")]
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public bool CreateGroupGameObject = true;
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public bool CreateCanvasPerObject = true;
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private int CanvasSortOffset = 20;
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private Canvas ThisCanvas;
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[System.NonSerialized]
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public Stack<UIPage> Pages = new Stack<UIPage>();
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protected override void Awake() {
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base.Awake();
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this.ThisCanvas = GetComponent<Canvas>();
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}
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/// <summary>
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/// 叠加一个组
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/// </summary>
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/// <param name="prefabs"></param>
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public UIGroup Overlay(IEnumerable<GameObject> prefabs, params object[] args) {
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if (this.Pages.Count == 0) {
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this.Pages.Push(new UIPage());
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}
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var page = this.Pages.Peek();
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var lastGroup = page.Last;
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if (lastGroup != null) {
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lastGroup.Value.SendBeenOverlay();
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}
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var group = new UIGroup(this, prefabs);
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page.AddLast(group);
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UpdateCanvasOrder();
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group.SendEnterStack(args);
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return group;
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}
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/// <summary>
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/// 覆盖一个组
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/// </summary>
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/// <param name="prefabs"></param>
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/// <param name="destroyBefore"></param>
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public UIGroup Cover(IEnumerable<GameObject> prefabs, bool destroyBefore, params object[] args) {
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//关闭底下的界面
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if (this.Pages.Count > 0) {
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var lastPage = this.Pages.Peek();
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lastPage.SendBeenCover();
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foreach (var @group in lastPage) {
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foreach (var uiPageItem in @group) {
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uiPageItem.Instance.SetActive(false);
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// Despawn(uiPageItem.Instance, destroyBefore);//这里不使用回收，为了避免复用之后，退回该界面状态丢失
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}
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}
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}
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//生成新层
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UIPage newPage = new UIPage();
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this.Pages.Push(newPage);
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var newGroup = new UIGroup(this, prefabs);
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newPage.AddLast(newGroup);
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UpdateCanvasOrder();
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newGroup.SendEnterStack(args);
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return newGroup;
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}
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/// <summary>
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/// 退回到上一界面
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/// </summary>
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public virtual void Back(bool destroy = true) {
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if (this.Pages.Count == 0) {
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UnityEngine.Debug.LogError("没有任何界面可以回退");
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return;
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}
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//回收最前面的界面
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var lastPage = this.Pages.Peek();
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var lastGroup = lastPage.Last.Value;
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lastPage.RemoveLast();
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lastGroup.SendLeaveStack();
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lastGroup.Despawn(destroy);
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//显示上一个界面，如果当前页面还有组，则只需通知，如果当前页面没有组了,则需要把下一页全部显示出来
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if (lastPage.Count == 0) {
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this.Pages.Pop();
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if (this.Pages.Count == 0) {
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return;
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}
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lastPage = this.Pages.Peek();
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foreach (var g in lastPage) {
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foreach (var i in g) {
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i.Instance.SetActive(true);
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}
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// g.Spawn();
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}
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lastPage.SendDeCover(); //注意：这里要先spawn在发消息
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} else {
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lastPage.Last.Value.SendDeOverlay();
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}
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UpdateCanvasOrder();
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}
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/// <summary>
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/// 移除指定的group
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/// </summary>
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/// <param name="group"></param>
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/// <param name="destroy"></param>
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public void BackSpecified(UIGroup @group, bool destroy = true)
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{
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if (this.Pages.Count == 0) {
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UnityEngine.Debug.LogError("fail");
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return;
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}
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var lastPage = this.Pages.Peek();
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var lastGroup = lastPage.Last.Value;
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var tmpPage = new Stack<UIPage>();
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var tmpStack = new Stack<UIGroup>();
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while (lastGroup != group) { //查找，直到指定界面
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tmpStack.Push(lastGroup);
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lastPage.RemoveLast();
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if (lastPage.Count == 0)
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{
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var tmpPopPage = this.Pages.Pop();
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tmpPage.Push(tmpPopPage);
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//将推出的页面重新入栈
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while (tmpStack.Count > 0)
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{
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tmpPopPage.AddLast(tmpStack.Pop());
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}
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if (this.Pages.Count == 0) {
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return;
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}
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lastPage = this.Pages.Peek();
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}
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lastGroup = lastPage.Last.Value;
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}
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//回收指定的界面
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lastPage = this.Pages.Peek();
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lastGroup = lastPage.Last.Value;
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lastPage.RemoveLast();
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lastGroup.SendLeaveStack();
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lastGroup.Despawn(destroy);
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//将退出的页面重新入栈
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while (tmpStack.Count > 0)
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{
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lastPage.AddLast(tmpStack.Pop());
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}
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while (tmpPage.Count > 0)
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{
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this.Pages.Push(tmpPage.Pop());
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}
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UpdateCanvasOrder();
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}
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/// <summary>
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/// 退回到指定界面Group
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/// </summary>
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public void BackTo(UIGroup group, bool destroy = true) {
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if (this.Pages.Count == 0) {
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UnityEngine.Debug.LogError("fail");
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return;
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}
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var lastPage = this.Pages.Peek();
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var lastGroup = lastPage.Last.Value;
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bool decover = false;
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bool deoverlay = false;
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while (lastGroup != group) { //一直回收，直到指定界面
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lastPage.RemoveLast();
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lastGroup.SendLeaveStack();
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lastGroup.Despawn(destroy);
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deoverlay = true;
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if (lastPage.Count == 0) {
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this.Pages.Pop();
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if (this.Pages.Count == 0) {
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return;
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}
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lastPage = this.Pages.Peek();
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decover = true;
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deoverlay = false;
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}
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lastGroup = lastPage.Last.Value;
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}
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//达到指定页面
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if (decover) { //如果经历过翻页，需要生成它
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// lastGroup.Spawn();
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foreach (var i in lastGroup) {
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i.Instance.SetActive(true);
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}
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lastPage.SendDeCover(); //注意：这里要先spawn在发消息
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}
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if (deoverlay) { //如果被叠加过，需要发送反叠加消息
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lastGroup.SendDeOverlay();
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}
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UpdateCanvasOrder();
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}
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public void UpdateCanvasOrder() {
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if (!this.CreateCanvasPerObject) {
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return;
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}
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var page = this.Pages.Peek();
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if (page == null) {
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return;
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}
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int i = 0;
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foreach (var group in page) {
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foreach (var item in @group) {
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if (item.Instance.activeSelf) {
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item.InstanceCanvas.overrideSorting = true;
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item.InstanceCanvas.sortingLayerID = this.ThisCanvas.sortingLayerID;
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item.InstanceCanvas.sortingOrder = i * this.CanvasSortOffset + this.ThisCanvas.sortingOrder;
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i++;
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}
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}
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}
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}
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internal UIItem PrefabToUIItem(GameObject prefab, GameObject parent) {
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var ins = Spawn(prefab);
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if (parent != null) {
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ins.transform.SetParent(parent.transform);
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}
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Canvas canvas = null;
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if (this.CreateCanvasPerObject) {
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canvas = ins.GetOrAddComponent<Canvas>();
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ins.GetOrAddComponent<GraphicRaycaster>();
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}
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return new UIItem(prefab, ins, canvas);
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}
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public virtual void OnUIGroupCreated(UIGroup uiGroup) {
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}
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}
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} |