From 0cc48973542a5d1927d69ddcdc13e2489625a453 Mon Sep 17 00:00:00 2001
From: DismissedLight <1686188646@qq.com>
Date: Mon, 27 May 2024 23:24:03 +0800
Subject: [PATCH] deferload experiment

---
 .../Control/Behavior/DeferLoadBehavior.cs     | 44 +++++++++++++++++++
 .../Control/Behavior/DeferLoadCollection.cs   | 25 +++++++++++
 .../Snap.Hutao/View/Helper/LoadDeferral.cs    | 15 +++++++
 src/Snap.Hutao/Snap.Hutao/View/MainView.xaml  |  2 +-
 .../View/Page/AnnouncementPage.xaml           |  9 +++-
 5 files changed, 92 insertions(+), 3 deletions(-)
 create mode 100644 src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadBehavior.cs
 create mode 100644 src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadCollection.cs
 create mode 100644 src/Snap.Hutao/Snap.Hutao/View/Helper/LoadDeferral.cs

diff --git a/src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadBehavior.cs b/src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadBehavior.cs
new file mode 100644
index 00000000..27b52fbc
--- /dev/null
+++ b/src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadBehavior.cs
@@ -0,0 +1,44 @@
+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+using CommunityToolkit.WinUI.Behaviors;
+using Microsoft.UI.Xaml;
+using System.Runtime.InteropServices;
+
+namespace Snap.Hutao.Control.Behavior;
+
+[DependencyProperty("ElementNames", typeof(DeferLoadCollection))]
+internal sealed partial class DeferLoadBehavior : BehaviorBase<FrameworkElement>
+{
+    protected override bool Initialize()
+    {
+        if (ElementNames.IsNullOrEmpty())
+        {
+            return true;
+        }
+
+        ThreadPool.UnsafeQueueUserWorkItem(LoadElements, this);
+        return true;
+    }
+
+    private static void LoadElements(object? state)
+    {
+        if (state is not DeferLoadBehavior behavior)
+        {
+            return;
+        }
+
+        List<string>? elementNames = null;
+        behavior.AssociatedObject.DispatcherQueue.Invoke(() => elementNames = [.. behavior.ElementNames]);
+
+        foreach (string name in CollectionsMarshal.AsSpan(elementNames))
+        {
+            Thread.Sleep(1000);
+
+            behavior.AssociatedObject.DispatcherQueue.TryEnqueue(() =>
+            {
+                behavior.AssociatedObject.FindName(name);
+            });
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadCollection.cs b/src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadCollection.cs
new file mode 100644
index 00000000..c7ae5eb8
--- /dev/null
+++ b/src/Snap.Hutao/Snap.Hutao/Control/Behavior/DeferLoadCollection.cs
@@ -0,0 +1,25 @@
+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+using Microsoft.Extensions.Primitives;
+using Windows.Foundation.Metadata;
+
+namespace Snap.Hutao.Control.Behavior;
+
+[CreateFromString(MethodName = "Snap.Hutao.Control.Behavior.DeferLoadCollection.Parse")]
+internal sealed class DeferLoadCollection : List<string>
+{
+    public static DeferLoadCollection Parse(string text)
+    {
+        DeferLoadCollection collection = [];
+        foreach (StringSegment segment in new StringTokenizer(text, [',']))
+        {
+            if (segment.HasValue)
+            {
+                collection.Add(segment.Value);
+            }
+        }
+
+        return collection;
+    }
+}
\ No newline at end of file
diff --git a/src/Snap.Hutao/Snap.Hutao/View/Helper/LoadDeferral.cs b/src/Snap.Hutao/Snap.Hutao/View/Helper/LoadDeferral.cs
new file mode 100644
index 00000000..e4934471
--- /dev/null
+++ b/src/Snap.Hutao/Snap.Hutao/View/Helper/LoadDeferral.cs
@@ -0,0 +1,15 @@
+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+using CommunityToolkit.Mvvm.ComponentModel;
+using Microsoft.Extensions.Primitives;
+using Windows.Foundation.Metadata;
+
+namespace Snap.Hutao.View.Helper;
+
+internal sealed class LoadDeferral : ObservableObject
+{
+    private bool canLoad;
+
+    public bool CanLoad { get => canLoad; set => SetProperty(ref canLoad, value); }
+}
\ No newline at end of file
diff --git a/src/Snap.Hutao/Snap.Hutao/View/MainView.xaml b/src/Snap.Hutao/Snap.Hutao/View/MainView.xaml
index 04885ca6..0edacf43 100644
--- a/src/Snap.Hutao/Snap.Hutao/View/MainView.xaml
+++ b/src/Snap.Hutao/Snap.Hutao/View/MainView.xaml
@@ -31,7 +31,7 @@
         <shvcs:BackdropTypeToOpacityConverter x:Key="BackdropTypeToOpacityConverter"/>
     </UserControl.Resources>
 
-    <Grid Transitions="{ThemeResource EntranceThemeTransitions}">
+    <Grid>
         <Border Background="{ThemeResource SolidBackgroundFillColorBaseBrush}" Opacity="{Binding AppOptions.BackdropType, Converter={StaticResource BackdropTypeToOpacityConverter}, Mode=OneWay}">
             <Border.OpacityTransition>
                 <ScalarTransition Duration="0:0:1"/>
diff --git a/src/Snap.Hutao/Snap.Hutao/View/Page/AnnouncementPage.xaml b/src/Snap.Hutao/Snap.Hutao/View/Page/AnnouncementPage.xaml
index 4c4abb6b..4304f903 100644
--- a/src/Snap.Hutao/Snap.Hutao/View/Page/AnnouncementPage.xaml
+++ b/src/Snap.Hutao/Snap.Hutao/View/Page/AnnouncementPage.xaml
@@ -23,6 +23,7 @@
     mc:Ignorable="d">
     <mxi:Interaction.Behaviors>
         <shcb:InvokeCommandOnLoadedBehavior Command="{Binding OpenUICommand}"/>
+        <shcb:DeferLoadBehavior ElementNames="TopPanel,GameAnnouncementPivot"/>
     </mxi:Interaction.Behaviors>
     <shc:ScopedPage.Resources>
         <shc:BindingProxy x:Key="BindingProxy" DataContext="{Binding}"/>
@@ -207,7 +208,7 @@
     <Grid>
         <ScrollViewer Padding="0" Style="{StaticResource DefaultScrollViewerStyle}">
             <StackPanel>
-                <StackPanel>
+                <StackPanel Name="TopPanel">
                     <TextBlock
                         Margin="16,16,16,0"
                         Style="{StaticResource TitleTextBlockStyle}"
@@ -240,7 +241,11 @@
                     </ScrollViewer>
                 </StackPanel>
 
-                <Pivot Style="{StaticResource DefaultPivotStyle}">
+                <Pivot
+                    x:Name="GameAnnouncementPivot"
+                    x:Load="False"
+                    Style="{StaticResource DefaultPivotStyle}"
+                    Transitions="{ThemeResource EntranceThemeTransitions}">
                     <PivotItem
                         Content="{Binding Announcement.List[0]}"
                         ContentTemplate="{StaticResource AnnouncementPivotItemContentTemplate}"