123123

JianGongYun/TRTC/ViewModels/LiveWindowViewModel.cs

@@ -19,6 +19,7 @@ namespace JianGongYun.TRTC.ViewModels
     {
         public event PropertyChangedEventHandler PropertyChanged;
 
+        #region 直播窗口
         /// <summary>
         /// 教室信息
         /// </summary>
@@ -317,6 +318,7 @@ namespace JianGongYun.TRTC.ViewModels
                 }
             }
         }
+        #endregion
 
         #region 只有摄像头，则画面放大并居中
         public Style MainBigWrapStyle
@@ -350,5 +352,27 @@ namespace JianGongYun.TRTC.ViewModels
         }
         #endregion
 
+        #region 聊天窗口
+        /// <summary>
+        /// 消息集合
+        /// </summary>
+        private ObservableCollection<string> _Chats = new ObservableCollection<string>() { "1", "2" };
+        public ObservableCollection<string> Chats
+        {
+            set
+            {
+                _Chats = value;
+                if (PropertyChanged != null)
+                {
+                    PropertyChanged(this, new PropertyChangedEventArgs("Chats"));//对StudentCount进行监听
+                }
+            }
+            get
+            {
+                return _Chats;
+            }
+        }
+        #endregion
+
     }
 }

JianGongYun/TRTC/Windows/LiveWindowRightBottomBlock.xaml

@@ -14,7 +14,41 @@
         MouseDown="Window_MouseDown"
         Title="" Height="600" Width="200">
     <Window.Resources>
+        <Style x:Key="placeHolder" TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="{x:Type TextBox}">
+                        <Grid>
+                            <TextBox Padding="14,0,14,0" VerticalContentAlignment="Center" Text="{Binding Path=Text,
+                                                RelativeSource={RelativeSource TemplatedParent}, 
+                                                Mode=TwoWay,
+                                                UpdateSourceTrigger=PropertyChanged}"
+                                 x:Name="textSource" 
+                                 Background="Transparent" 
+                                 Foreground="White"
+                                 Panel.ZIndex="2" />
+                            <TextBox Padding="14,0,14,0" VerticalContentAlignment="Center" Text="{TemplateBinding Tag}" Background="{TemplateBinding Background}" Panel.ZIndex="1">
+                                <TextBox.Style>
+                                    <Style TargetType="{x:Type TextBox}">
+                                        <Setter Property="Foreground" Value="Transparent"/>
+                                        <Style.Triggers>
+                                            <DataTrigger Binding="{Binding Path=Text, Source={x:Reference textSource}}" Value="">
+                                                <Setter Property="Foreground" Value="#fff"/>
+                                            </DataTrigger>
+                                        </Style.Triggers>
+                                    </Style>
+                                </TextBox.Style>
+                            </TextBox>
+                        </Grid>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
         <BooleanToVisibilityConverter x:Key="VisibilityOfBool" />
+        <!--自定义ListBox项样式-->
+        <DataTemplate x:Key="cusItem">
+            <TextBlock Foreground="White" Text="{Binding}"></TextBlock>
+        </DataTemplate>
     </Window.Resources>
     <DockPanel>
         <!--预览框-->
@@ -29,6 +63,14 @@
         </Grid>
         <!--聊天版面-->
         <Grid Background="#33000000">
+            <DockPanel>
+                <!--输入框-->
+                <DockPanel DockPanel.Dock="Bottom" Height="30">
+                    <TextBox Background="Transparent" Foreground="White" Style="{StaticResource placeHolder}" PreviewKeyDown="TextBox_PreviewKeyDown" Tag="输入"></TextBox>
+                </DockPanel>
+                <!--消息列表-->
+                <ListBox ItemTemplate="{StaticResource cusItem}" ItemsSource="{Binding Chats}" Background="Transparent"></ListBox>
+            </DockPanel>
         </Grid>
     </DockPanel>
 </Window>

JianGongYun/TRTC/Windows/LiveWindowRightBottomBlock.xaml.cs

@@ -84,5 +84,16 @@ namespace JianGongYun.TRTC.Windows
             }
         }
 
+        private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
+        {
+            //输入框回车
+            if (e.Key == Key.Enter)
+            {
+                var text = (TextBox)sender;
+                //socket.send(text.Text);
+                LiveWindow.LiveWindowViewModel.Chats.Add(text.Text);//往Chats集合添加数据会自动更新到界面上
+                text.Text = "";
+            }
+        }
     }
 }