src/WpfEditor/TreeMenuPage.xaml

<Window x:Class="WpfEditor.TreeMenuPage"
        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"
        mc:Ignorable="d"
        Title="EchoEditor" Height="600" Width="800">
    <Grid>
        <!-- 主容器 -->
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        
        <!-- 顶部按钮区域 -->
        <StackPanel Grid.Column="0" Orientation="Horizontal" VerticalAlignment="Top" Margin="10">
            <!-- 九宫格按钮 -->
            <Button x:Name="MenuButton" 
                    Width="40" 
                    Height="40" 
                    Background="#4A90E2" 
                    BorderBrush="#357ABD" 
                    BorderThickness="2"
                    Click="MenuButton_Click"
                    ToolTip="点击显示菜单">
                <Grid>
                    <!-- 九宫格图案 -->
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*"/>
                        <RowDefinition Height="*"/>
                        <RowDefinition Height="*"/>
                    </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="*"/>
                        <ColumnDefinition Width="*"/>
                        <ColumnDefinition Width="*"/>
                    </Grid.ColumnDefinitions>
                    
                    <!-- 九个小方块 -->
                    <Rectangle Grid.Row="0" Grid.Column="0" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="0" Grid.Column="1" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="0" Grid.Column="2" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="1" Grid.Column="0" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="1" Grid.Column="1" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="1" Grid.Column="2" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="2" Grid.Column="0" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="2" Grid.Column="1" Fill="White" Margin="2"/>
                    <Rectangle Grid.Row="2" Grid.Column="2" Fill="White" Margin="2"/>
                </Grid>
            </Button>
        </StackPanel>
        
        <!-- 弹出的树形目录 -->
        <Border x:Name="TreeMenuBorder" 
                Grid.Column="1" 
                Background="White" 
                BorderBrush="#CCCCCC" 
                BorderThickness="1" 
                Margin="10,10,10,10" 
                Visibility="Collapsed"
                HorizontalAlignment="Left"
                VerticalAlignment="Top"
                Width="250"
                MaxHeight="400">
            <Border.Effect>
                <DropShadowEffect Color="Gray" Direction="315" ShadowDepth="5" Opacity="0.3"/>
            </Border.Effect>
            
            <ScrollViewer VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto">
                <TreeView x:Name="MenuTreeView" 
                          Background="Transparent" 
                          BorderThickness="0"
                          Margin="5">
                    <TreeViewItem Header="智能录入" IsExpanded="True">
                        <TreeViewItem Header="图片识别" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="ImageOCR"/>
                        <TreeViewItem Header="整理校对" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="ReviseEdit"/>
                        <TreeViewItem Header="目录拆解" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="MenuSplit"/>
                        <TreeViewItem Header="内容录入" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="ContenInto"/>
                    </TreeViewItem>

                    <TreeViewItem Header="工具" IsExpanded="True">
                        <TreeViewItem Header="导出PDF图片" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="ExportPDFImage"/>                        
                        <TreeViewItem Header="插入符号" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="InsertSymbol"/>
                        <TreeViewItem Header="格式化代码" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="FormatCode"/>
                        <TreeViewItem Header="查找替换" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="FindReplace"/>
                    </TreeViewItem>

                    <TreeViewItem Header="编辑操作" IsExpanded="True">
                        <TreeViewItem Header="撤销" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="Undo"/>
                        <TreeViewItem Header="重做" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="Redo"/>
                        <TreeViewItem Header="剪切" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="Cut"/>
                        <TreeViewItem Header="复制" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="Copy"/>
                        <TreeViewItem Header="粘贴" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="Paste"/>
                    </TreeViewItem>

                    <TreeViewItem Header="视图设置" IsExpanded="True">
                        <TreeViewItem Header="显示行号" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="ShowLineNumbers"/>
                        <TreeViewItem Header="显示空白字符" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="ShowWhitespace"/>
                        <TreeViewItem Header="高亮当前行" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="HighlightCurrentLine"/>
                    </TreeViewItem>

                    <TreeViewItem Header="帮助" IsExpanded="False">
                        <TreeViewItem Header="关于" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="About"/>
                        <TreeViewItem Header="快捷键" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="Shortcuts"/>
                        <TreeViewItem Header="用户手册" MouseDoubleClick="TreeItem_MouseDoubleClick" Tag="UserManual"/>
                    </TreeViewItem>
                </TreeView>
            </ScrollViewer>
        </Border>
        
        <!-- 主内容区域 -->
        <Grid Grid.Column="1" Margin="10">
            <TextBlock x:Name="ContentText" 
                       Text="点击左上角的九宫格按钮显示菜单" 
                       HorizontalAlignment="Center" 
                       VerticalAlignment="Center" 
                       FontSize="16" 
                       Foreground="#666666"/>
        </Grid>
    </Grid>
</Window>