CODEWITHSUNDEEP
wpfxamllayoutexpander
Kirsty White
Kirsty White

Reputation: 1220

Expander header text alignment

So I changed the orientation of the expander to align vertically rather than horizontally but in the closed state the expander header text is aligning horizontally. Please tell me there is a way to easily fix this without expression blend etc.

<Expander Header="My Header">

I was hoping for something like AlignHeaderText vertically but I see no options for it? Does anyone have a different way they could "show" me?

So taking from the mentoring H.B provided I came up with this:

    <StackPanel Orientation="Horizontal" Margin="0,0,342,0" Width="318">
            <StackPanel.Triggers>
                <EventTrigger RoutedEvent="Expander.Expanded" SourceName="expander1">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <DoubleAnimation From="0" To="1.2" Duration="0:0:0.45" Storyboard.TargetName="content" Storyboard.TargetProperty="(FrameworkElement.LayoutTransform).(ScaleTransform.ScaleX)"/>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </StackPanel.Triggers>
            <Expander ExpandDirection="Right" Name="expander1" OpacityMask="#6C806969" Background="#FF807171">
                <Expander.LayoutTransform>
                    <RotateTransform Angle="90"></RotateTransform>
                </Expander.LayoutTransform>
                <Expander.Header>
                    <TextBlock
                   Text="HEADER"
                   Width="{Binding
                    RelativeSource={RelativeSource
                      Mode=FindAncestor,
                      AncestorType={x:Type Expander}},
                    Path=ActualWidth}"
                  />
                </Expander.Header>
                <Grid x:Name="content" Background="#FF807171" Width="178">
                    <Grid.LayoutTransform>
                        <ScaleTransform ScaleX="0" ScaleY="1"/>
                    </Grid.LayoutTransform>
                </Grid>

            </Expander>

Unfortunately it does this to the expander:

enter image description here

It places the text at the top and the button in the middle, I was hoping for the button at the top and the text after the button?

If I change Path=ActualWidth to Height the button moves up but the header text is still left of the button and not below it?

Upvotes: 5

Views: 9415

Answers (4)

Jens
Jens

Reputation: 2617

You need to also set the ExpandDirection property and set the rotation in a header template.

Below a style that flip direction when folded

<StackPanel Orientation="Horizontal">
    <StackPanel.Resources>
        <Style TargetType="Expander">
            <Style.Triggers>
                <Trigger Property="IsExpanded" Value="False">
                    <Setter Property="HeaderTemplate">
                        <Setter.Value>
                            <DataTemplate>
                                <TextBlock Text="{Binding}">
                                    <TextBlock.LayoutTransform>
                                        <RotateTransform Angle="90"/>
                                    </TextBlock.LayoutTransform>
                                </TextBlock>
                            </DataTemplate>
                        </Setter.Value>
                    </Setter>
                    <Setter Property="ExpandDirection" Value="Right"/>
                </Trigger>
            </Style.Triggers>
            <Setter Property="BorderBrush" Value="DarkGray"/>
            <Setter Property="Margin" Value="1,0,1,1"/>
            <Setter Property="Padding" Value="2"/>
            <Setter Property="VerticalContentAlignment" Value="Top"/>
        </Style>
    </StackPanel.Resources>
    <Expander Header="Command Data">
        <!-- some content -->
    </Expander>
    <Expander Header="Line Status">
        <!-- some content -->
    </Expander>
</StackPanel>

Upvotes: 0

honzakuzel1989
honzakuzel1989

Reputation: 2520

My solution (without another properties) - based on H.B. and Sheikh Neyamat answers:

<Expander ExpandDirection="Right">
  <Expander.Header>
    <TextBlock Text="Header">
      <TextBlock.LayoutTransform>
        <RotateTransform Angle="90"/>
      </TextBlock.LayoutTransform>
    </TextBlock>
  </Expander.Header>
  // Content - listbox in my case
</Expander>

Upvotes: 9

Neyamat Ullah
Neyamat Ullah

Reputation: 138

An example here supporting above suggestions.

Upvotes: 1

brunnerh
brunnerh

Reputation: 184441

Assign a TextBlock as Header via element syntax and apply a RotateTransform as the TextBlock's LayoutTransform to get the rotation. If you want vertical text that can be done differently.

Upvotes: 3

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