异步加载PPT

.gitignore

@@ -1,3 +1,4 @@
+/UserSettings/EditorUserSettings.asset
 /UniTask.Addressables.csproj
 /UniTask.csproj
 /UniTask.DOTween.csproj

Assets/Scripts/HQB/PPTManager.cs

@@ -15,9 +15,11 @@ using UnityEngine.UI;
 /// <summary>
 /// PPT管理类
 /// </summary>
-public class PPTManager : BaseManager<PPTManager>
+public class PPTManager : MonoBehaviour
 {
 
+    public static PPTManager Instance;
+
     /// <summary>
     /// 
     /// </summary>
@@ -40,7 +42,7 @@ public class PPTManager : BaseManager<PPTManager>
 
     protected PPTManager()
     {
-
+        Instance = this;
     }
 
     public string[] PPTName()
@@ -151,6 +153,63 @@ public class PPTManager : BaseManager<PPTManager>
     }
     // 逐个加载每个PPT文件
 
+    //
+    // 添加异步加载接口
+    public IEnumerator LoadPPTAsync(string pptName, Action<List<Texture2D>> callback)
+    {
+        string pptPath = GetPPTPathByName(pptName);
+
+        if (!texturesDic.ContainsKey(pptName))
+        {
+            // 异步加载所有PPT页面
+            yield return StartCoroutine(LoadAllPPTFilesAsync(pptPath, textures => {
+                texturesDic.Add(pptName, textures);
+                callback?.Invoke(textures);
+            }));
+        }
+        else
+        {
+            callback?.Invoke(texturesDic[pptName]);
+        }
+    }
+
+    // 实现逐页异步加载
+    public IEnumerator LoadAllPPTFilesAsync(string folderPath, Action<List<Texture2D>> callback)
+    {
+        List<Texture2D> texture2Ds = new List<Texture2D>();
+        Presentation presentation = new Presentation(folderPath);
+
+        for (int i = 0; i < presentation.Slides.Count; i++)
+        {
+            ISlide slide = presentation.Slides[i];
+            var bitmap = slide.GetThumbnail(1f, 1f);
+
+            using (MemoryStream ms = new MemoryStream())
+            {
+                bitmap.Save(ms, ImageFormat.Jpeg);
+                byte[] buff = ms.ToArray();
+
+                Texture2D texture2D = new Texture2D(bitmap.Width, bitmap.Height);
+                texture2D.LoadImage(buff);
+                texture2Ds.Add(texture2D);
+
+                // 每加载完一页就触发单页回调
+                OnSinglePageLoaded?.Invoke(texture2D);
+
+                // 每加载完一页就yield一次，避免长时间阻塞
+                yield return null;
+            }
+
+            // 释放bitmap资源
+            bitmap.Dispose();
+        }
+
+        callback?.Invoke(texture2Ds);
+    }
+
+    // 添加单页加载事件
+    public event Action<Texture2D> OnSinglePageLoaded;
+
     /// <summary>
     /// 分割ppt路径名称
     /// </summary>

Assets/Scripts/Project/UI/UI_Panel/UI_PPTForPracticePanel.cs

@@ -29,16 +29,16 @@ public class UI_PPTForPracticePanel : BasePanel
         canvasGroup.alpha = 1f;
 
         pptFolderName = Application.streamingAssetsPath + "/PPT";
-        GameManager.PPTManager.PPTFiles(pptFolderName);
+        PPTManager.Instance.PPTFiles(pptFolderName);
 
-        string[] ppts = GameManager.PPTManager.PPTName();
+        string[] ppts = PPTManager.Instance.PPTName();
         // 1. 提取文件名并解析数字前缀
         var sortedItems = ppts
             .Select(path => new
             {
                 Path = path,
-                Name = GameManager.PPTManager.PathName(path),
+                Name = PPTManager.Instance.PathName(path),
-                Order = GameManager.PPTManager.ExtractLeadingNumber(GameManager.PPTManager.PathName(path)) // ÌáÈ¡Êý×Ö
+                Order = PPTManager.Instance.ExtractLeadingNumber(PPTManager.Instance.PathName(path)) // 提取数字
             })
             .OrderBy(item => item.Order) // 按数字排序
             .ToList();
@@ -57,23 +57,31 @@ public class UI_PPTForPracticePanel : BasePanel
             Debug.LogError("PPT路径数组未初始化或为空");
             return;
         }
-
-
     }
-    public override  void ShowMe()
+
+    void Start()
+    {
+        // 监听单页加载完成事件
+        PPTManager.Instance.OnSinglePageLoaded += texture => {
+            // 立即显示当前加载的页面
+            DisplaySinglePage(texture);
+        };
+    }
+
+    public override void ShowMe()
     {
         base.ShowMe();
         string pptBtnName = Left_content.GetChild(0).GetComponent<UI_TipsForPracticePanelPPTNameItem>().PPTName_Tog.gameObject.name;
         OnClick(pptBtnName);
         //await ToolManager.CanvasFadeIn(canvasGroup, 0.5f);
     }
-    public override  void HideMe()
+    public override void HideMe()
     {
         base.HideMe();
         //await ToolManager.CanvasFadeOut(canvasGroup, 0.5f);
     }
 
-    protected override  void OnClick(string btnName)
+    protected override void OnClick(string btnName)
     {
         Debug.Log(btnName);
         switch (btnName)
@@ -134,15 +142,31 @@ public class UI_PPTForPracticePanel : BasePanel
             default:
                 if (isOn)
                 {
-                    List<Texture2D> textures = GameManager.PPTManager.LoadPPTItems(togglePath);
+                    foreach (Transform child in content)//清理之前的图片
-                    if (textures != null)
                     {
-                        DisplayPPT(textures);
+                        DestroyImmediate(child.gameObject);
                     }
+                    // 启动协程异步加载PPT
+                    StartCoroutine(LoadPPTAsync(togglePath, textures =>
+                    {
+                        if (textures != null)
+                        {
+                            DisplayPPT(textures);
+                        }
+                    }));
                 }
                 break;
         }
     }
+
+    // 添加异步加载方法
+    private IEnumerator LoadPPTAsync(string pptName, Action<List<Texture2D>> callback)
+    {
+        // 调用PPTManager的异步加载方法
+        yield return PPTManager.Instance.LoadPPTAsync(pptName, callback);
+    }
+
+
     private void DisplayPPT(List<Texture2D> textures)
     {
         foreach (Transform child in content)
@@ -159,5 +183,15 @@ public class UI_PPTForPracticePanel : BasePanel
         }
     }
 
-
+    private void DisplaySinglePage(Texture2D texture)
+    {
+        RawImage rawImage = pptImagePrefab.GetComponent<RawImage>();
+        RawImage image = Instantiate(rawImage, content);
+        image.texture = texture;
+        image.rectTransform.sizeDelta = new Vector2(1608, 940);
+        //foreach (Transform child in content)
+        //{
+        //    DestroyImmediate(child.gameObject);
+        //}
+    }
 }