How to set text at the head of a RibbonApplicationMenu

问题

I'm trying to have text in the top level of a RibbonApplicationMenu (trying to the get the word "File" there similar to Word or Outlook). It seems the Microsoft.Windows.Controls.Ribbon.RibbonApplicationMenu http://msdn.microsoft.com/en-us/library/microsoft.windows.controls.ribbon.ribbonapplicationmenu.aspx supports a SmallImageSource but no text property. Setting the Label property doesn't work for this problem.

xmlns:ribbon="clr-namespace:Microsoft.Windows.Controls.Ribbon;assembly=RibbonControlsLibrary"    
<ribbon:RibbonApplicationMenu Label="File"> <!--doesn't set the label -->

</ribbon:RibbonApplicationMenu>

The goal is to have the word "File" appear in the circled area below.

回答1:

The simplest solution (to me) was to insert a DrawingImage with a GlyphRun inside. On a separate post is asked how to get the AdvanceWidths and GlyphIndicies for the GlyphRun. The result is below

<ribbon:RibbonApplicationMenu.SmallImageSource>
    <DrawingImage>
        <DrawingImage.Drawing>
            <GlyphRunDrawing ForegroundBrush="White">
                <GlyphRunDrawing.GlyphRun>
                    <GlyphRun
                            CaretStops="{x:Null}" 
                            ClusterMap="{x:Null}" 
                            IsSideways="False" 
                            GlyphOffsets="{x:Null}" 
                            GlyphIndices="41 76 79 72" 
                            FontRenderingEmSize="12" 
                            DeviceFontName="{x:Null}" 
                            AdvanceWidths="5.859375 2.90625 2.90625 6.275390625">
                        <GlyphRun.GlyphTypeface>
                            <GlyphTypeface FontUri="C:\WINDOWS\Fonts\SEGOEUI.TTF"/>
                        </GlyphRun.GlyphTypeface>
                    </GlyphRun>
                </GlyphRunDrawing.GlyphRun>
            </GlyphRunDrawing>
        </DrawingImage.Drawing>
    </DrawingImage>
</ribbon:RibbonApplicationMenu.SmallImageSource>

Resulting Ribbon:

回答2:

Remove the unwanted elements for the visual tree, and replace them with a TextBlock that takes the text from the Label property. You have to do this for both the button on the main visual tree and on the popup's visual tree. Finally, since text is more intricate than the typical image, it is helpful to back off on the aero highlighting effects.

To use the following code, assign a name to the application menu in the XAML and call ReplaceRibbonApplicationMenuButtonContent with it from the Loaded event handler of the window.

/// <summary>
/// Replaces the image and down arrow of a Ribbon Application Menu Button with the button's Label text.
/// </summary>
/// <param name="menu">The menu whose application button should show the label text.</param>
/// <remarks>
/// The method assumes the specific visual tree implementation of the October 2010 version of <see cref="RibbonApplicationMenu"/>.
/// Fortunately, since the application menu is high profile, breakage due to version changes should be obvious.
/// Hopefully, native support for text will be added before the implementation breaks.
/// </remarks>
void ReplaceRibbonApplicationMenuButtonContent(RibbonApplicationMenu menu)
{
    Grid outerGrid = (Grid)VisualTreeHelper.GetChild(menu, 0);
    RibbonToggleButton toggleButton = (RibbonToggleButton)outerGrid.Children[0];
    ReplaceRibbonToggleButtonContent(toggleButton, menu.Label);

    Popup popup = (Popup)outerGrid.Children[2];
    EventHandler popupOpenedHandler = null;
    popupOpenedHandler = new EventHandler(delegate
    {
        Decorator decorator = (Decorator)popup.Child;
        Grid popupGrid = (Grid)decorator.Child;
        Canvas canvas = (Canvas)popupGrid.Children[1];
        RibbonToggleButton popupToggleButton = (RibbonToggleButton)canvas.Children[0];
        ReplaceRibbonToggleButtonContent(popupToggleButton, menu.Label);
        popup.Opened -= popupOpenedHandler;
    });
    popup.Opened += popupOpenedHandler;
}

void ReplaceRibbonToggleButtonContent(RibbonToggleButton toggleButton, string text)
{
    // Subdues the aero highlighting to that the text has better contrast.
    Grid grid = (Grid)VisualTreeHelper.GetChild(toggleButton, 0);
    Border middleBorder = (Border)grid.Children[1];
    middleBorder.Opacity = .5;

    // Replaces the images with the label text.
    StackPanel stackPanel = (StackPanel)grid.Children[2];
    UIElementCollection children = stackPanel.Children;
    children.RemoveRange(0, children.Count);
    TextBlock textBlock = new TextBlock(new Run(text));
    textBlock.Foreground = Brushes.White;
    children.Add(textBlock);
}

回答3:

Right. If you want no code-behind and no complex glyph computations, use the following XAML:

<RibbonApplicationMenu.SmallImageSource>
  <DrawingImage>
    <DrawingImage.Drawing>
      <GeometryDrawing>
        <GeometryDrawing.Geometry>
          <RectangleGeometry Rect="0,0,20,20"></RectangleGeometry>
        </GeometryDrawing.Geometry>
        <GeometryDrawing.Brush>
          <VisualBrush Stretch="Uniform">
            <VisualBrush.Visual>
                <TextBlock Text="File" FontSize="16" Foreground="White" />
            </VisualBrush.Visual>
          </VisualBrush>
        </GeometryDrawing.Brush>
      </GeometryDrawing>
    </DrawingImage.Drawing>
  </DrawingImage>
</RibbonApplicationMenu.SmallImageSource>

Advantages of this approach:

• XAML-only, no code-behind
• No glyph measurement
• Easy to change label

回答4:

Tricky! You might have to replace the PART_ToggleButton of the template with your own version to be able to set the text.

Using the WPF Vizualizer shows that the template contains a StackPanel with an Image and a Path (DownArrow), but no TextBlock, so I doubt that there is a place in the current control to specify the label text.

Of course, you could also create an image that contains the desired text.

回答5:

Another way to do so is just using a grid and paint a TextBlock at the right place. Be sure to make the TextBlock NOT HitTestVisible.

<Grid>
    <DockPanel>
         <ribbon:Ribbon DockPanel.Dock="Top">
             <!-- your ribbon stuff -->
         </ribbon:Ribbon>
         <!-- your other stuff -->
    </DockPanel>
    <TextBlock Margin="3,26" Foreground="White"
               IsHitTestVisible="False"
               Text="{LocalizeExtension:LocText Key=FILE, Dict=Strings, Assembly=YourAssembly}"/>
</Grid>

Advantages:

• less xaml
• way easier to localize

Disadvantage: - looks less nice on Windows XP

回答6:

The following solution was posted on an MSDN forum. It involves altering the style used in the default (?) theme.

I checked the source code of the Ribbon controls (please download the MicrosoftRibbonForWPFSourceAndSamples from web site). In the theme file (\MicrosoftRibbonForWPFSourceAndSamples\RibbonControlsLibrary\Themes\Generic.xaml) of the ribbon, you could find this style "Ü" is used to the RibbonApplicationMenu. In this style, there is no element to display the Text, it only has one Image element to display the image.

Fortunately, we could modify the style code and add some controls in the "Ü" style. Please below code:

line 7264, change the code:

 <!--<Image IsHitTestVisible="False"
    Source="{Binding RelativeSource ={RelativeSource FindAncestor, AncestorType ={x:Type ribbon:RibbonApplicationMenu}},

Path=SmallImageSource}" HorizontalAlignment="Center" VerticalAlignment="Center" Width="16" Height="16" RenderOptions.BitmapScalingMode="NearestNeighbor" RenderOptions.EdgeMode="Aliased" />-->

line 7433, add code Label="{TemplateBinding Label}" in the end of the RibbonToggleButton element:

 ......
 <ControlTemplate TargetType="{x:Type ribbon:RibbonApplicationMenu}">
   <Grid Focusable="False"
      x:Name="OuterGrid"
      SnapsToDevicePixels="True">
     <ribbon:RibbonToggleButton x:Name="PART_ToggleButton" 
       BorderBrush="{TemplateBinding BorderBrush}"
       Background="{TemplateBinding Background}"
       BorderThickness="{TemplateBinding BorderThickness}"                       
       Style="{StaticResource &#220;}"
       FocusVisualStyle="{TemplateBinding FocusVisualStyle}"
       Height="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Height}"
       Width="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Width}"
       ToolTipTitle="{TemplateBinding ToolTipTitle}"
       ToolTipDescription="{TemplateBinding ToolTipDescription}"
       ToolTipImageSource="{TemplateBinding ToolTipImageSource}"
       ToolTipFooterTitle="{TemplateBinding ToolTipFooterTitle}"
       ToolTipFooterDescription="{TemplateBinding ToolTipFooterDescription}"
       ToolTipFooterImageSource="{TemplateBinding ToolTipFooterImageSource}"
       SmallImageSource="{TemplateBinding SmallImageSource}"
       IsChecked="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=IsDropDownOpen, Mode=TwoWay}"
       Label="{TemplateBinding Label}"/>

line 7564, add code Label="{TemplateBinding Label}" in the end of the RibbonToggleButton element:

......
<Canvas>
  <ribbon:RibbonToggleButton x:Name="PART_PopupToggleButton"
    AutomationProperties.Name="{Binding RelativeSource={RelativeSource TemplatedParent},

Path=(AutomationProperties.Name)}" Canvas.Top="-24" Canvas.Left="3" IsChecked="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=IsDropDownOpen}" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}"
Style="{StaticResource Ü}" Focusable="False" Height="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Height}" Width="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Width}" Label="{TemplateBinding Label}"/> And in the RibbonWindow, we could set the Label property of the RibbonApplicationMenu as:

<ribbon:RibbonApplicationMenu Label="File">

The forum post did include a ZIP of the modified sources, but the link no longer works.

来源：https://stackoverflow.com/questions/6698191/how-to-set-text-at-the-head-of-a-ribbonapplicationmenu