How to create a WPF-tab control as chevron list?

Question

I have a WPF tab control. but I would like to change the tab item style. The default style is square. I need to make it like a chevron list. Each block in that as hexagon.

EDIT:

Answer 1

Here's a quick example made with Kaxaml:

<Page
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <Page.Resources>
    <Style x:Key="chevronTabItemStyle" TargetType="{x:Type TabItem}">
      <Setter Property="Foreground" Value="White" />
      <Setter Property="Template">
        <Setter.Value>
          <ControlTemplate TargetType="{x:Type TabItem}">
            <StackPanel Orientation="Horizontal" Margin="0,0,-7,0" Height="30">
              <Path Data="M0,0 10,0 10,30 0,30 10,15"
                    Fill="{TemplateBinding Background}"/>
              <Grid>
                <Rectangle Fill="{TemplateBinding Background}" />
                <TextBlock Text="{TemplateBinding Header}" Margin="10,5" VerticalAlignment="Center" />
              </Grid>
              <Path Data="M0,0 10,15 0,30"
                    Fill="{TemplateBinding Background}" />                  
            </StackPanel>
          </ControlTemplate>
        </Setter.Value>
      </Setter>
    </Style>
  </Page.Resources>
  <Grid>  
    <TabControl ItemContainerStyle="{StaticResource chevronTabItemStyle}">
      <TabItem Header="Design" Background="DarkSlateBlue" />
      <TabItem Header="Plan" Background="DarkCyan" />
      <TabItem Header="Build" Background="LightSkyBlue" />
      <TabItem Header="Test" Background="SandyBrown" />
      <TabItem Header="Evaluate" Background="SteelBlue" />
    </TabControl>
  </Grid>
</Page>

You will probably need to adjust a few properties, but it's roughly what you described...