增强窗口关闭处理和资源清理

在 `LoginWindow.xaml` 中添加了 `Closing` 事件处理程序，以便在窗口关闭时执行特定逻辑。新增的 `Window_Closing` 方法会检查 `MainWindow.token` 是否为 `null`，并在必要时关闭应用程序。此外，在 `MainWindow.xaml.cs` 中确保在清理资源时将 `token` 设置为 `null`，以避免潜在的资源泄漏或错误。

chatclient/App.xaml

@@ -12,6 +12,7 @@
                 <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Light.xaml" />
                 <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesign2.Defaults.xaml" />
                 <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.DeepPurple.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/chatclient;component/Data/MaterialTrayMenuItem.xaml" />
             </ResourceDictionary.MergedDictionaries>
         </ResourceDictionary>
     </Application.Resources>

chatclient/Data/MaterialTrayMenuItem.xaml

@@ -0,0 +1,45 @@
+<ResourceDictionary 
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes">
+    <!-- Material Design 托盘菜单样式 -->
+    <Style x:Key="MaterialTrayMenuItem" TargetType="MenuItem" BasedOn="{StaticResource MaterialDesignMenuItem}">
+        <Setter Property="Background" Value="Transparent"/>
+        <Setter Property="BorderThickness" Value="0"/>
+        <Setter Property="Padding" Value="12,8"/>
+        <Setter Property="Foreground" Value="{DynamicResource MaterialDesignBody}"/>
+        <Setter Property="FontSize" Value="14"/>
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="MenuItem">
+                    <Border x:Name="Border" 
+                            Background="Transparent"
+                            CornerRadius="4"
+                            SnapsToDevicePixels="True">
+                        <Grid>
+                            <materialDesign:Ripple Content="{TemplateBinding Header}" Background="Transparent" Foreground="{TemplateBinding Foreground}"
+                                                   HorizontalContentAlignment="Stretch" VerticalContentAlignment="Center" Padding="{TemplateBinding Padding}"/>
+                        </Grid>
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsHighlighted" Value="True">
+                            <Setter TargetName="Border" Property="Background" Value="{DynamicResource MaterialDesignSelection}"/>
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+    <Style x:Key="MaterialTrayMenu" TargetType="ContextMenu">
+        <Setter Property="Background" Value="{DynamicResource MaterialDesignPaper}"/>
+        <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesignDivider}"/>
+        <Setter Property="BorderThickness" Value="1"/>
+        <Setter Property="Padding" Value="8"/>
+        <Setter Property="SnapsToDevicePixels" Value="True"/>
+        <Setter Property="Effect">
+            <Setter.Value>
+                <DropShadowEffect BlurRadius="16" ShadowDepth="4" Color="#40000000"/>
+            </Setter.Value>
+        </Setter>
+    </Style>
+</ResourceDictionary>

chatclient/Data/TrayIconManager.cs

@@ -0,0 +1,122 @@
+using System.Windows;
+using Hardcodet.Wpf.TaskbarNotification;
+using System.Windows.Controls;
+using MaterialDesignThemes.Wpf;
+using System.Windows.Input;
+using System.Drawing;
+using System.Diagnostics;
+
+namespace chatclient.Data
+{
+    public class TrayIconManager
+    {
+        private readonly TaskbarIcon _trayIcon;
+        private readonly Window _mainWindow;
+
+        public TrayIconManager(Window mainWindow)
+        {
+            _mainWindow = mainWindow;
+
+            // 创建托盘图标
+            _trayIcon = new TaskbarIcon
+            {
+                Icon = new System.Drawing.Icon("resource/chat.ico"),
+                ToolTipText = "Material Design Application",
+                ContextMenu = CreateContextMenu()
+            };
+
+            // 注册事件
+            _trayIcon.TrayMouseDoubleClick += TrayIcon_TrayMouseDoubleClick;
+            _mainWindow.Closing += MainWindow_ClosingHandler;
+        }
+
+        private void MainWindow_ClosingHandler(object? sender, System.ComponentModel.CancelEventArgs e)
+        {
+            // 取消关闭操作，改为最小化到托盘
+            e.Cancel = true;
+            _mainWindow.Hide();
+
+            // 显示通知
+            //_trayIcon.ShowBalloonTip("Application minimized",
+             //   "The application is running in the system tray",
+             //   BalloonIcon.Info);
+        }
+
+        private ContextMenu CreateContextMenu()
+        {
+            // 创建Material Design风格的上下文菜单
+            var contextMenu = new ContextMenu
+            {
+                Style = (Style)Application.Current.Resources["MaterialTrayMenu"]
+            };
+
+            // 添加菜单项
+            contextMenu.Items.Add(CreateMenuItem("Open Application", PackIconKind.WindowRestore, OpenApp_Click));
+            contextMenu.Items.Add(CreateMenuItem("Settings", PackIconKind.Cog, Settings_Click));
+            contextMenu.Items.Add(new Separator { Style = (Style)Application.Current.Resources["MaterialDesignLightSeparator"] });
+            contextMenu.Items.Add(CreateMenuItem("Check for Updates", PackIconKind.Update, Updates_Click));
+            contextMenu.Items.Add(CreateMenuItem("Help", PackIconKind.HelpCircle, Help_Click));
+            contextMenu.Items.Add(new Separator { Style = (Style)Application.Current.Resources["MaterialDesignLightSeparator"] });
+            contextMenu.Items.Add(CreateMenuItem("Exit", PackIconKind.Power, Exit_Click));
+
+            return contextMenu;
+        }
+
+        private MenuItem CreateMenuItem(string header, PackIconKind iconKind, RoutedEventHandler clickHandler)
+        {
+            var menuItem = new MenuItem
+            {
+                Header = header,
+                Style = (Style)Application.Current.Resources["MaterialTrayMenuItem"],
+                Icon = new PackIcon { Kind = iconKind, Width = 20, Height = 20 }
+            };
+
+            menuItem.Click += clickHandler;
+            return menuItem;
+        }
+
+        private void TrayIcon_TrayMouseDoubleClick(object sender, RoutedEventArgs e)
+        {
+            RestoreApplication();
+        }
+
+        private void OpenApp_Click(object sender, RoutedEventArgs e)
+        {
+            RestoreApplication();
+        }
+
+        private void RestoreApplication()
+        {
+            _mainWindow.Show();
+            _mainWindow.WindowState = WindowState.Normal;
+            _mainWindow.Activate();
+        }
+
+        private void Settings_Click(object sender, RoutedEventArgs e)
+        {
+            // 实现设置逻辑
+        }
+
+        private void Updates_Click(object sender, RoutedEventArgs e)
+        {
+            // 实现更新检查逻辑
+        }
+
+        private void Help_Click(object sender, RoutedEventArgs e)
+        {
+            // 实现帮助逻辑
+        }
+
+        private void Exit_Click(object sender, RoutedEventArgs e)
+        {
+            // 释放托盘图标资源
+            Dispose();
+            Application.Current.Shutdown();
+        }
+
+        public void Dispose()
+        {
+            _trayIcon.Dispose();
+        }
+    }
+}

chatclient/Data/chatapi.cs

@@ -20,6 +20,7 @@ namespace chatclient.Data
         public string? status { get; set; }
         public string? message { get; set; }
         public string? token { get; set; }
+        public string? username { get; set; }
     }
     internal class SignData
     {

chatclient/LoginWindow.xaml

@@ -8,7 +8,7 @@
         xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls" x:Class="chatclient.LoginWindow"
         mc:Ignorable="d"
         Title="LoginWindow" Height="590" Width="360" MinHeight="590" MinWidth="360" MaxHeight="590" MaxWidth="360" 
-        ResizeMode="NoResize">
+        ResizeMode="NoResize" Closing="Window_Closing">
 
     <TabControl>
         <TabItem Header="登录账号" Cursor="Hand" Height="40">

chatclient/LoginWindow.xaml.cs

@@ -213,6 +213,10 @@ namespace chatclient
             // 例如：UserName = LoadSavedUsername();
             // Update("UserName");
         }
+        public void Window_Closing(object sender, CancelEventArgs e)
+        {
+            if(MainWindow.token == null) Application.Current.Shutdown();
+        }
     }
 }
 

chatclient/MainWindow.xaml

@@ -8,7 +8,7 @@
         xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls" x:Class="chatclient.MainWindow"
         mc:Ignorable="d"
         Title="ChatWindow" Height="450" Width="800" MinHeight="240" MinWidth="380"
-        Style="{StaticResource MaterialDesignWindow}">
+        Style="{StaticResource MaterialDesignWindow}" Closed="MainWindow_Closed" Loaded="MainWindow_Loaded">
     <Grid>
         <materialDesign:Card>
             <TabControl VerticalContentAlignment="Bottom" materialDesign:ColorZoneAssist.Mode="PrimaryMid" Style="{StaticResource MaterialDesignNavigationRailTabControl}">
@@ -17,7 +17,7 @@
                         <Button Style="{StaticResource MaterialDesignFloatingActionMiniLightButton}" Margin="12">
                             <Image Source="/resource/user.png" />
                         </Button>
-                        <TextBlock Text="{Binding Username}"/>
+                        <TextBlock Text="{Binding UserName}" TextAlignment="Center" MaxWidth="64" MaxHeight="64" TextWrapping="Wrap"/>
                     </StackPanel>
                 </materialDesign:NavigationRailAssist.FloatingContent>
                 <TabItem>
@@ -69,7 +69,7 @@
                                                     <ColumnDefinition Width="Auto"/>
                                                 </Grid.ColumnDefinitions>
                                                 <!-- 左侧头像（仅当Alignment=Left时显示） -->
-                                                <Border x:Name="leftAvatar" Grid.Column="0" Width="40" Height="40" Margin="10,0,10,0" CornerRadius="20" VerticalAlignment="Top">
+                                                <Border x:Name="leftAvatar" Grid.Column="0" Width="40" Height="40" Margin="10,0,5,0" CornerRadius="20" VerticalAlignment="Top">
                                                     <!-- 图片头像 -->
                                                     <Image Source="{Binding Image}" Stretch="UniformToFill" HorizontalAlignment="Center" VerticalAlignment="Center">
                                                         <Image.Clip>
@@ -86,7 +86,7 @@
                                                     </StackPanel>
                                                 </materialDesign:Card>
                                                 <!-- 右侧头像（仅当Alignment=Right时显示） -->
-                                                <Border x:Name="rightAvatar" Grid.Column="2" Width="40" Height="40" Margin="10,0,10,0" CornerRadius="20" VerticalAlignment="Top">
+                                                <Border x:Name="rightAvatar" Grid.Column="2" Width="40" Height="40" Margin="5,0,10,0" CornerRadius="20" VerticalAlignment="Top">
                                                     <Image Source="{Binding Image}"  Stretch="UniformToFill" HorizontalAlignment="Center" VerticalAlignment="Center">
                                                         <Image.Clip>
                                                             <EllipseGeometry Center="20,20" RadiusX="20" RadiusY="20"/>
@@ -112,21 +112,18 @@
                                 </ItemsControl>
                             </ScrollViewer>
 
-                            <Grid Grid.Row="2" Background="{DynamicResource MaterialDesign.Brush.Primary.Foreground}">
+                            <materialDesign:Card materialDesign:ElevationAssist.Elevation="Dp8" Grid.Row="2">
-                                <Grid.ColumnDefinitions>
+                                <Grid Margin="5,0,5,0">
-                                    <ColumnDefinition Width="*"/>
+                                    <Grid.RowDefinitions>
-                                    <ColumnDefinition Width="Auto"/>
+                                        <RowDefinition Height="*"/>
-                                </Grid.ColumnDefinitions>
+                                        <RowDefinition Height="Auto"/>
-
+                                    </Grid.RowDefinitions>
-                                <TextBox x:Name="txtMessage" Grid.Column="0" 
+                                    <TextBox x:Name="txtMessage" Grid.Row="0" materialDesign:HintAssist.Hint="输入消息..." AcceptsReturn="True" VerticalScrollBarVisibility="Auto"
-                 materialDesign:HintAssist.Hint="输入消息..." 
+                                             TextWrapping="Wrap" MinHeight="50" MaxHeight="100" Margin="5" BorderBrush="#00000000"/>
-                 AcceptsReturn="True" VerticalScrollBarVisibility="Auto"
+                                    <Button x:Name="btnSend" Grid.Row="1" Content="发送" MinWidth="80" Style="{StaticResource MaterialDesignRaisedButton}"
-                 TextWrapping="Wrap" MinHeight="60" MaxHeight="120" Margin="5"/>
+                                            Click="SendMessage_Click" Width="20" HorizontalAlignment="Right" Margin="2,2,4,4"/>
-
-                                <Button x:Name="btnSend" Grid.Column="1" Content="发送" MinWidth="80"
-                Style="{StaticResource MaterialDesignRaisedButton}"
-                Click="SendMessage_Click"/>
                                 </Grid>
+                            </materialDesign:Card>
                         </Grid>
                     </Grid>
                 </TabItem>
@@ -143,5 +140,7 @@
                 </TabItem>
             </TabControl>
         </materialDesign:Card>
+        <!--信息框-->
+        <materialDesign:Snackbar x:Name="SnackbarThree" MessageQueue="{materialDesign:MessageQueue}" />
     </Grid>
 </Window>

chatclient/MainWindow.xaml.cs

@@ -56,6 +56,7 @@ namespace chatclient
         {
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(UpdateName));
         }
+        private TrayIconManager? _trayManager;
         public MainWindow()
         {
             InitializeComponent();
@@ -84,6 +85,8 @@ namespace chatclient
                     MessageScroller.ScrollToEnd();
                 }), DispatcherPriority.ContextIdle);
             };
+            //Loaded += MainWindow_Loaded;
+            //Closed += MainWindow_Closed;
         }
         public static void StartReceive()
         {
@@ -135,6 +138,7 @@ namespace chatclient
                         if (LoginResponse!.status == "success" && LoginResponse != null)
                         {
                             token = LoginResponse.token;
+                            UserName = LoginResponse.username ?? "Unnamed";
                             Application.Current.Dispatcher.Invoke(() =>
                             {
                                 var mainWindow = Application.Current.Windows.OfType<MainWindow>().FirstOrDefault();
@@ -181,18 +185,37 @@ namespace chatclient
                             Application.Current.Dispatcher.Invoke(() =>
                             {
                                 // 处理聊天消息
+                                if (chat.user == UserName)
+                                {
                                     var chatmessage = new ChatMessage
                                     {
                                         Sender = chat.user ?? "未知用户",
                                         Type = MessageType.Text,
                                         Image = new BitmapImage(new Uri(chat.image ?? "pack://application:,,,/resource/user.png", UriKind.Absolute)),
-                                    Content = chat.message ?? "无内容",
+                                        Content = chat.message ?? "(无内容)",
+                                        Timestamp = DateTime.Now,
+                                        Alignment = HorizontalAlignment.Right,
+                                        SenderColor = new SolidColorBrush(Colors.Blue)
+                                    };
+                                    var mainWindow = Application.Current.Windows.OfType<MainWindow>().FirstOrDefault();
+                                    mainWindow?.Messages.Add(chatmessage);
+                                }
+                                else
+                                {
+                                    var chatmessage = new ChatMessage
+                                    {
+                                        Sender = chat.user ?? "未知用户",
+                                        Type = MessageType.Text,
+                                        Image = new BitmapImage(new Uri(chat.image ?? "pack://application:,,,/resource/user.png", UriKind.Absolute)),
+                                        Content = chat.message ?? "(无内容)",
                                         Timestamp = chat.timestamp,
                                         Alignment = HorizontalAlignment.Left,
                                         SenderColor = new SolidColorBrush(Colors.Black)
                                     };
                                     var mainWindow = Application.Current.Windows.OfType<MainWindow>().FirstOrDefault();
                                     mainWindow?.Messages.Add(chatmessage);
+                                }
+                                
                             });
                         }
                         else
@@ -220,11 +243,11 @@ namespace chatclient
                 log.Error("处理响应时发生错误", ex);
             }
         }
-        private void SendMessage_Click(object sender, RoutedEventArgs e)
+        private async void SendMessage_Click(object sender, RoutedEventArgs e)
         {
-            SendMessage();
+            await SendMessage();
         }
-        private void SendMessage()
+        private async Task SendMessage()
         {
             if (string.IsNullOrWhiteSpace(txtMessage.Text))
                 return;
@@ -234,54 +257,90 @@ namespace chatclient
             // 判断是否为群组，若是则收件人设为“所有人”，否则为联系人显示名
             //string recipient = contact?.IsGroup == true ? "所有人" : contact?.DisplayName;
 
+            // 弃用的方法
             // 创建新消息
-            var newMessage = new ChatMessage
+            //var newMessage = new ChatMessage
-            {
+            //{
-                Sender = "我",
+            //    Sender = "我",
-                Type = MessageType.Text,
+            //    Type = MessageType.Text,
-                Image = new BitmapImage(new Uri("pack://application:,,,/resource/user.png", UriKind.Absolute)), // 默认头像
+            //    Image = new BitmapImage(new Uri("pack://application:,,,/resource/user.png", UriKind.Absolute)), // 默认头像
-                Content = txtMessage.Text,
+            //    Content = txtMessage.Text,
-                Timestamp = DateTime.Now,
+            //    Timestamp = DateTime.Now,
-                Alignment = HorizontalAlignment.Right, // 自己发送的消息靠右
+            //    Alignment = HorizontalAlignment.Right, // 自己发送的消息靠右
-                SenderColor = new SolidColorBrush(Colors.Blue)
+            //    SenderColor = new SolidColorBrush(Colors.Blue)
-            };
+            //};
             var newChatMessage = new ChatData
             {
                 type = "chat",
-                message = newMessage.Content
+                message = txtMessage.Text
             };
             string ChatJsonData = JsonSerializer.Serialize(newChatMessage);
             byte[] dataBytes = Encoding.UTF8.GetBytes(ChatJsonData);
             log.Info($"向服务器聊天信息(长度：{dataBytes.Length})");
-            if (Client != null)
+            // 检查Socket是否可用
-            {
+            if (Client?.Connected == true)
-                if (Client.Connected)
             {
                 Client.Send(dataBytes);
+                Application.Current.Dispatcher.Invoke(() => 
+                {
+                    txtMessage.Clear();
+                });
+                return;
             }
-                else
+            log.Info("未连接服务器，尝试异步连接");
+            // 异步连接操作
+            await Task.Run(() =>
             {
                 try
                 {
-                        log.Info("未连接服务器，尝试连接");
                     Client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
-                        Client.Connect(IPAddress.Parse(Server.ServerIP), Server.ServerPort);
+                    Client?.Connect(IPAddress.Parse(Server.ServerIP), Server.ServerPort);
+                    StartReceive();
+                    Client?.Send(dataBytes);
+                    Application.Current.Dispatcher.Invoke(() =>
+                    {
+                        txtMessage.Clear();
+                    });
                 }
                 catch (Exception ex)
                 {
-                        log.Error(ex);
+                    log.Error($"连接失败: {ex.Message}");
-                        Client.Close();
+                    Client?.Close();
-                    }
+                    Application.Current.Dispatcher.Invoke(() =>
-                    //finally
+                    {
-                    //{
+                        var mainWindow = Application.Current.Windows.OfType<MainWindow>().FirstOrDefault();
-                    //
+                        if (mainWindow != null)
-                    //}
+                        {
+                            QueueMessage("连接失败，请检查网络设置或服务器状态。");
                         }
+                    });
                 }
+            });
             // 添加到消息列表
-            Messages.Add(newMessage);
+            //Messages.Add(newMessage);
-            // 清空输入框
+        }
-            txtMessage.Clear();
+        private void QueueMessage(string message)
+        {
+            if (SnackbarThree.MessageQueue is { } messageQueue)
+            {
+                //use the message queue to send a message.
+                //the message queue can be called from any thread
+                Task.Factory.StartNew(() => messageQueue.Enqueue(message));
+            }
+        }
+        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
+        {
+            // 初始化托盘管理器
+            _trayManager = new TrayIconManager(this);
+        }
+        private void MainWindow_Closed(object sender, System.EventArgs e)
+        {
+            // 清理资源
+            Client?.Shutdown(SocketShutdown.Both);
+            Client?.Close();
+            Client?.Dispose();
+            token = null;
+            _trayManager?.Dispose();
         }
     }
 }

chatclient/chatclient.csproj

@@ -18,7 +18,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Content Include="resource\chat.ico" />
+    <Content Include="resource\chat.ico">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
   </ItemGroup>
 
   <ItemGroup>