WPF 自定义MenuItem样式

原文:WPF 自定义MenuItem样式

一、前言

默认的MenuItem样式比较普通，这次自定义MenuItem的样式也只是对MenuItem的颜色风格进行变化。需要其他功能的变化，大家可以根据样式代码进行扩展。

MenuItem的样式代码：

<!--MenuItem-->
        <Style TargetType="MenuItem">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="MenuItem">
                        <Grid ToolTip="{TemplateBinding Header}" Height="24" Background="#FBFBFD" Width="{TemplateBinding Width}">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="30" />
                                <ColumnDefinition Width="*" MinWidth="80"/>
                            </Grid.ColumnDefinitions>
                            <Border Background="#EBEBED"/>
                            <Border x:Name="_border"   Grid.ColumnSpan="2"/>
                            <Image x:Name="_imgicon" Width="12" Height="12" Stretch="Uniform" Source="{Binding Icon,RelativeSource={RelativeSource TemplatedParent}}" />
                            <TextBlock Foreground="#2D2D30" Grid.Column="1" Margin="5 0 15 0"  VerticalAlignment="Center" x:Name="_txt" Text="{Binding Header,RelativeSource={RelativeSource TemplatedParent}}" />
                            <Path  Visibility="Collapsed" x:Name="_path" Grid.Column="1" HorizontalAlignment="Right"  Margin="5 13 5 0"   Data="M0,4 4,0 0,-4 z" Fill="#7E8A92"/>
                            <Popup  Placement="Right" x:Name="SubMenuPopup" AllowsTransparency="True"   Focusable="False" IsOpen="{TemplateBinding IsSubmenuOpen}" >
                                <ScrollViewer   ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
                                    <Border Background="#ffc787" Name="SubmenuBorder" BorderBrush="LightGray" BorderThickness="1"  SnapsToDevicePixels="True"    >
                                        <StackPanel   IsItemsHost="True"   KeyboardNavigation.DirectionalNavigation="Cycle" />
                                    </Border>
                                </ScrollViewer>
                            </Popup>

                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="HasItems" Value="true">
                                <Setter TargetName="_path" Property="Visibility" Value="Visible"/>
                            </Trigger>
                            <Trigger Property="IsMouseOver" Value="true">
                                <Setter TargetName="_border" Property="Background" Value="#ffc787"/>
                                <Setter TargetName="_txt" Property="Foreground" Value="White"/>
                                <Setter TargetName="_path" Property="Fill" Value="White"/>
                            </Trigger>
                            <Trigger Property="IsEnabled" Value="false">
                                <Setter TargetName="_txt" Property="Foreground" Value="Gray"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

引用示例：

 <Grid>
            <Grid.ContextMenu>
                <ContextMenu>
                    <MenuItem Header="菜单一">
                        <MenuItem Header="子菜单"/>
                    </MenuItem>
                    <MenuItem Header="菜单二"></MenuItem>
                </ContextMenu>

            </Grid.ContextMenu>
        </Grid>

显示效果：

所有代码已经上传到github：https://github.com/cmfGit/WpfDemo.git