编写一个小而强大的 Windows 动态屏保壁纸

写在前面

两年前我做了第一个开源软件 DreamScene2 动态桌面，如今受到了很多人的喜欢，这增加了我继续做好开源软件的信心。之前的这个软件一直有人希望我加入一个设置屏保壁纸的功能，因为 DreamScene2 就是一个单纯的动态桌面的软件，所以一直没有加入这个功能。今天我带来一个新的开源软件，软件依然是小而强大，简洁并且快速。
欢迎 Star 和 Fork: https://github.com/he55/SonomaWallpaper
介绍

Sonoma Wallpaper 是首款将 macOS Sonoma 4k 120 帧动态屏保壁纸带到 Windows 11 的软件，壁纸包含了自然景观、城市景观、水下景观和地球四个主题的屏保共有 134 个 4k 屏保壁纸。

  功能

• 4k 120 帧率视频播放
  
• 多语言
  
• 高 dpi 支持
  
• 深色模式
  
• 多任务下载
  
• Windows 11 支持
  

如何使用

选中已下载的视频壁纸，然后打开 显示为屏幕保护程序 开关，程序会在 2 分钟系统无操作时自动播放屏保壁纸。
下载壁纸

• 选择一个壁纸点击下载
  

  

• 等待壁纸下载完成
  

  

• 壁纸下载完成后，可以点击预览按钮看效果
  

  视频播放功能代码

在解码 4k 120 帧视频的时候我试过 VLC、迅雷的 APlayer、mpv、ffmpeg、PotPlayer 这些引擎或播放器，发现在 Windows 10 上它们对 120 帧视频支持的都不好。最后发现 Windows 11 已经原生支持了 120 帧视频播放，但只有 UWP 和 WinUI3 程序原生支持。WPF 要使用 UWP 的控件需要安装 Microsoft.Toolkit.Wpf.UI.XamlHost 这个 NuGet 包，这个包可以让 Win32 程序调用 UWP 的控件。包安装后在 xaml 文件中添加名称空间 xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"，然后添加 WindowsXamlHost 控件用来显示 UWP 的 MediaPlayerElement 媒体播放控件。
完整代码如下

1. <Window x:
2.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
5.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
6.         xmlns:local="clr-namespace:WpfApp21"
7.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
8.         mc:Ignorable="d"
9.         Title="MainWindow" Height="450" Width="800">
10.     <xamlhost:WindowsXamlHost
11.         ChildChanged="WindowsXamlHost_ChildChanged"
12.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
13. </Window>

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添加 ChildChanged 事件用来处理 MediaPlayerElement 控件创建成功后的要做的事情

• Stretch 设置视频拉伸模式
  
• Source 设置播放文件路径
  
• AutoPlay 设置自动播放
  
• IsMuted 设置静音
  
• IsLoopingEnabled 设置循环播放
  

1. private void WindowsXamlHost_ChildChanged(object sender, EventArgs e){<Window x:
2.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
5.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
6.         xmlns:local="clr-namespace:WpfApp21"
7.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
8.         mc:Ignorable="d"
9.         Title="MainWindow" Height="450" Width="800">
10.     <xamlhost:WindowsXamlHost
11.         ChildChanged="WindowsXamlHost_ChildChanged"
12.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
13. </Window>MediaPlayerElement mediaPlayerElement = (MediaPlayerElement)((WindowsXamlHost)sender).Child;<Window x:
14.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
15.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
16.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
17.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
18.         xmlns:local="clr-namespace:WpfApp21"
19.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
20.         mc:Ignorable="d"
21.         Title="MainWindow" Height="450" Width="800">
22.     <xamlhost:WindowsXamlHost
23.         ChildChanged="WindowsXamlHost_ChildChanged"
24.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
25. </Window>if (mediaPlayerElement != null)<Window x:
26.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
27.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
28.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
29.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
30.         xmlns:local="clr-namespace:WpfApp21"
31.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
32.         mc:Ignorable="d"
33.         Title="MainWindow" Height="450" Width="800">
34.     <xamlhost:WindowsXamlHost
35.         ChildChanged="WindowsXamlHost_ChildChanged"
36.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
37. </Window>{<Window x:
38.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
39.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
40.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
41.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
42.         xmlns:local="clr-namespace:WpfApp21"
43.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
44.         mc:Ignorable="d"
45.         Title="MainWindow" Height="450" Width="800">
46.     <xamlhost:WindowsXamlHost
47.         ChildChanged="WindowsXamlHost_ChildChanged"
48.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
49. </Window><Window x:
50.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
51.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
52.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
53.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
54.         xmlns:local="clr-namespace:WpfApp21"
55.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
56.         mc:Ignorable="d"
57.         Title="MainWindow" Height="450" Width="800">
58.     <xamlhost:WindowsXamlHost
59.         ChildChanged="WindowsXamlHost_ChildChanged"
60.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
61. </Window>mediaPlayerElement.Stretch = Windows.UI.Xaml.Media.Stretch.UniformToFill;<Window x:
62.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
63.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
64.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
65.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
66.         xmlns:local="clr-namespace:WpfApp21"
67.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
68.         mc:Ignorable="d"
69.         Title="MainWindow" Height="450" Width="800">
70.     <xamlhost:WindowsXamlHost
71.         ChildChanged="WindowsXamlHost_ChildChanged"
72.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
73. </Window><Window x:
74.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
75.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
76.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
77.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
78.         xmlns:local="clr-namespace:WpfApp21"
79.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
80.         mc:Ignorable="d"
81.         Title="MainWindow" Height="450" Width="800">
82.     <xamlhost:WindowsXamlHost
83.         ChildChanged="WindowsXamlHost_ChildChanged"
84.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
85. </Window>mediaPlayerElement.Source = MediaSource.CreateFromUri(new Uri("C:\wallpapers\comp_LW_L001_C006_PSNK_DENOISE_v02_SDR_PS_FINAL_20180709_FRC_sdr_4k_qp20_240p_t2160_tsa.mov"));<Window x:
86.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
87.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
88.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
89.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
90.         xmlns:local="clr-namespace:WpfApp21"
91.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
92.         mc:Ignorable="d"
93.         Title="MainWindow" Height="450" Width="800">
94.     <xamlhost:WindowsXamlHost
95.         ChildChanged="WindowsXamlHost_ChildChanged"
96.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
97. </Window><Window x:
98.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
99.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
100.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
101.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
102.         xmlns:local="clr-namespace:WpfApp21"
103.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
104.         mc:Ignorable="d"
105.         Title="MainWindow" Height="450" Width="800">
106.     <xamlhost:WindowsXamlHost
107.         ChildChanged="WindowsXamlHost_ChildChanged"
108.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
109. </Window>mediaPlayerElement.AutoPlay = true;<Window x:
110.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
111.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
112.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
113.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
114.         xmlns:local="clr-namespace:WpfApp21"
115.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
116.         mc:Ignorable="d"
117.         Title="MainWindow" Height="450" Width="800">
118.     <xamlhost:WindowsXamlHost
119.         ChildChanged="WindowsXamlHost_ChildChanged"
120.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
121. </Window><Window x:
122.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
123.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
124.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
125.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
126.         xmlns:local="clr-namespace:WpfApp21"
127.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
128.         mc:Ignorable="d"
129.         Title="MainWindow" Height="450" Width="800">
130.     <xamlhost:WindowsXamlHost
131.         ChildChanged="WindowsXamlHost_ChildChanged"
132.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
133. </Window>mediaPlayerElement.MediaPlayer.IsMuted = true;<Window x:
134.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
135.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
136.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
137.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
138.         xmlns:local="clr-namespace:WpfApp21"
139.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
140.         mc:Ignorable="d"
141.         Title="MainWindow" Height="450" Width="800">
142.     <xamlhost:WindowsXamlHost
143.         ChildChanged="WindowsXamlHost_ChildChanged"
144.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
145. </Window><Window x:
146.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
147.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
148.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
149.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
150.         xmlns:local="clr-namespace:WpfApp21"
151.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
152.         mc:Ignorable="d"
153.         Title="MainWindow" Height="450" Width="800">
154.     <xamlhost:WindowsXamlHost
155.         ChildChanged="WindowsXamlHost_ChildChanged"
156.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
157. </Window>mediaPlayerElement.MediaPlayer.IsLoopingEnabled = true;<Window x:
158.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
159.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
160.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
161.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
162.         xmlns:local="clr-namespace:WpfApp21"
163.         xmlns:xamlhost="clr-namespace:Microsoft.Toolkit.Wpf.UI.XamlHost;assembly=Microsoft.Toolkit.Wpf.UI.XamlHost"
164.         mc:Ignorable="d"
165.         Title="MainWindow" Height="450" Width="800">
166.     <xamlhost:WindowsXamlHost
167.         ChildChanged="WindowsXamlHost_ChildChanged"
168.         InitialTypeName="Windows.UI.Xaml.Controls.MediaPlayerElement" />
169. </Window>}}

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