WPF 制作 Windows 屏保

络腮胡菲菲 · 2022-9-1 20:13:00

分享如何使用WPF 制作 Windows 屏保

WPF 制作 Windows 屏保
作者：驚鏵
原文链接：https://github.com/yanjinhuagood/ScreenSaver

框架使用.NET452；
Visual Studio 2019;
项目使用 MIT 开源许可协议；
更多效果可以通过GitHub[1]|码云[2]下载代码;
也可以自行添加天气信息等。

正文

屏保程序的本质上就是一个 Win32 窗口应用程序；
- 把编译好一个窗口应用程序之后，把扩展名更改为 scr，于是你的屏幕保护程序就做好了;
- 选中修改好的 scr 程序上点击右键，可以看到一个安装选项，点击之后就安装了;
- 安装之后会立即看到我们的屏幕保护程序已经运行起来了;
处理屏幕保护程序参数如下
- /s 屏幕保护程序开始，或者用户点击了预览按钮;
- /c 用户点击了设置按钮;
- /p 用户选中屏保程序之后，在预览窗格中显示;

1）MainWindow.xaml 代码如下;

<Window x:Class="ScreenSaver.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:system="clr-namespace:System;assembly=mscorlib" xmlns:drawing="http://www.microsoft.net/drawing" xmlns:local="clr-namespace:ScreenSaver" mc:Ignorable="d" WindowStyle="None" Title="MainWindow" Height="450" Width="800"> <Grid x:Name="MainGrid"> <drawing:PanningItems ItemsSource="{Binding stringCollection,RelativeSource={RelativeSource AncestorType=local:MainWindow}}" x:Name="MyPanningItems"> <drawing:PanningItems.ItemTemplate> <DataTemplate> <Rectangle> <Rectangle.Fill> <ImageBrush ImageSource="{Binding .}"/> </Rectangle.Fill> </Rectangle> </DataTemplate> </drawing:PanningItems.ItemTemplate> </drawing:PanningItems> <Grid HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,50,0,0"> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <Grid.Resources> </Grid.Resources> <WrapPanel> <TextBlock Text="{Binding Hour,RelativeSource={RelativeSource AncestorType=local:MainWindow}}"/> <TextBlock Text=":" x:Name="PART_TextBlock"> <TextBlock.Triggers> <EventTrigger RoutedEvent="FrameworkElement.Loaded"> <BeginStoryboard> <Storyboard> <DoubleAnimation Duration="00:00:01" From="1" To="0" Storyboard.TargetName="PART_TextBlock" Storyboard.TargetProperty="Opacity" RepeatBehavior="Forever" FillBehavior="Stop"/> </Storyboard> </BeginStoryboard> </EventTrigger> </TextBlock.Triggers> </TextBlock> <TextBlock Text="{Binding Minute,RelativeSource={RelativeSource AncestorType=local:MainWindow}}"/> </WrapPanel> <TextBlock Grid.Row="1" FontSize="45" HorizontalAlignment="Center" Text="{Binding Date,RelativeSource={RelativeSource AncestorType=local:MainWindow}}"/> </Grid> </Grid> </Window>

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2） MainWindow.xaml.cs 代码如下;

当屏保启动后需要注意如下
- 将鼠标设置为不可见Cursors.None;
- 将窗体设置为最大化WindowState.Maximized;
- WindowStyle设置为"None";
- 注意监听鼠标按下和键盘按键则退出屏保;

using System; using System.Collections.ObjectModel; using System.Globalization; using System.IO; using System.Windows; using System.Windows.Input; using System.Windows.Threading; namespace ScreenSaver { /// <summary> /// MainWindow.xaml 的交互逻辑 /// </summary> public partial class MainWindow : Window { public static readonly DependencyProperty stringCollectionProperty = DependencyProperty.Register("stringCollection", typeof(ObservableCollection<string>), typeof(MainWindow), new PropertyMetadata(null)); public static readonly DependencyProperty HourProperty = DependencyProperty.Register("Hour", typeof(string), typeof(MainWindow), new PropertyMetadata(null)); public static readonly DependencyProperty MinuteProperty = DependencyProperty.Register("Minute", typeof(string), typeof(MainWindow), new PropertyMetadata(null)); public static readonly DependencyProperty SecondProperty = DependencyProperty.Register("Second", typeof(string), typeof(MainWindow), new PropertyMetadata(null)); public static readonly DependencyProperty DateProperty = DependencyProperty.Register("Date", typeof(string), typeof(MainWindow), new PropertyMetadata()); private readonly DispatcherTimer timer = new DispatcherTimer(); public MainWindow() { InitializeComponent(); Loaded += delegate { WindowState = WindowState.Maximized; Mouse.OverrideCursor = Cursors.None; var date = DateTime.Now; Hour = date.ToString("HH"); Minute = date.ToString("mm"); Date = $"{date.Month} / {date.Day} {CultureInfo.CurrentCulture.DateTimeFormat.GetDayName(date.DayOfWeek)}"; stringCollection = new ObservableCollection<string>(); var path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Images"); var directoryInfo = new DirectoryInfo(path); foreach (var item in directoryInfo.GetFiles()) { if (Path.GetExtension(item.Name) != ".jpg") continue; stringCollection.Add(item.FullName); } timer.Interval = TimeSpan.FromSeconds(1); timer.Tick += delegate { date = DateTime.Now; Hour = date.ToString("HH"); Minute = date.ToString("mm"); Date = $"{date.Month} / {date.Day} {CultureInfo.CurrentCulture.DateTimeFormat.GetDayName(date.DayOfWeek)}"; }; timer.Start(); }; MouseDown += delegate { Application.Current.Shutdown(); }; KeyDown += delegate { Application.Current.Shutdown(); }; } public ObservableCollection<string> stringCollection { get => (ObservableCollection<string>)GetValue(stringCollectionProperty); set => SetValue(stringCollectionProperty, value); } public string Hour { get => (string)GetValue(HourProperty); set => SetValue(HourProperty, value); } public string Minute { get => (string)GetValue(MinuteProperty); set => SetValue(MinuteProperty, value); } public string Second { get => (string)GetValue(SecondProperty); set => SetValue(SecondProperty, value); } public string Date { get => (string)GetValue(DateProperty); set => SetValue(DateProperty, value); } } }

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参考①[3]参考②[4]
参考资料

[1] GitHub: https://github.com/yanjinhuagood/ScreenSaver
[2] 码云: https://gitee.com/yanjinhua/ScreenSaver
[3] 参考①: https://blog.walterlv.com/post/write-a-windows-screen-saver-using-wpf.html
[4] 参考②: https://wbsimms.com/create-screensaver-net-wpf/

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WPF 制作 Windows 屏保

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