UVtools/UVtools.WPF/Controls/KernelControl.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             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" d:DesignWidth="500" d:DesignHeight="300"
             x:Class="UVtools.WPF.Controls.KernelControl">
     
    <Grid RowDefinitions="Auto" ColumnDefinitions="*,10,Auto">
      <TextBox 
                ToolTip.Tip="The kernel or structuring element used to probe the input image.
&#x0a;A structuring element is a matrix that identifies the pixel in the image being processed and defines the neighborhood used in the processing of each pixel."
                VerticalAlignment="Stretch"
                AcceptsReturn="True"
                Watermark="Kernel matrix"
                UseFloatingWatermark="True"
                ScrollViewer.HorizontalScrollBarVisibility="Auto"
                ScrollViewer.VerticalScrollBarVisibility="Auto"
                Text="{Binding MatrixText}"
                />
        
      <Grid 
        Grid.Column="2"
        RowDefinitions="Auto,10,Auto,10,Auto,20,Auto"
        ColumnDefinitions="Auto,10,Auto,10,Auto,10,Auto">

        <TextBlock
          HorizontalAlignment="Right"
          VerticalAlignment="Center"
          Text="Shape:"/>
        <ComboBox 
          Grid.ColumnSpan="5"
          Grid.Column="2"
          SelectedItem="{Binding SelectedKernelShape}"
          Items="{Binding KernelShapes}"
          />

        <TextBlock
          Grid.Column="0"
          Grid.Row="2"
          HorizontalAlignment="Right"
          VerticalAlignment="Center"
          Text="Size:"/>
        <NumericUpDown
          Grid.Column="2"
          Grid.Row="2"
          VerticalAlignment="Center"
          Minimum="2"
          MinWidth="60"
          Value="{Binding MatrixWidth}"
          />
        <TextBlock
          Grid.Column="4"
          Grid.Row="2"
          HorizontalAlignment="Center"
          VerticalAlignment="Center"
          Text="x"/>
        <NumericUpDown
          Grid.Column="6"
          Grid.Row="2"
          VerticalAlignment="Center"
          Minimum="2"
          MinWidth="60"
          Value="{Binding MatrixHeight}"
          />


        <TextBlock
          Grid.Column="0"
          Grid.Row="4"
          HorizontalAlignment="Right"
          VerticalAlignment="Center"
          Text="Anchor X:"/>
        <NumericUpDown
          Grid.Column="2"
          Grid.Row="4"
          VerticalAlignment="Center"
          Minimum="-1"
          MinWidth="60"
          ToolTip.Tip="X coordinate of the kenel origin, -1 for auto-center."
          Value="{Binding AnchorX}"
          />
        <TextBlock
          Grid.Column="4"
          Grid.Row="4"
          HorizontalAlignment="Right"
          VerticalAlignment="Center"
          Text="Y:"/>
        <NumericUpDown
          Grid.Column="6"
          Grid.Row="4"
          VerticalAlignment="Center"
          Minimum="-1"
          MinWidth="60"
          ToolTip.Tip="Y coordinate of the kernel origin, -1 for auto-center."
          Value="{Binding AnchorY}"
          />

        <Button
          Grid.Column="0"
          Grid.Row="6"
          Grid.ColumnSpan="3"
          Padding="10"
          Content="Generate"
          Command="{Binding GenerateKernel}"
          />

        <Button
          Grid.Column="4"
          Grid.Row="6"
          Grid.ColumnSpan="3"
          Padding="10"
          Content="Reset"
          Command="{Binding ResetKernel}"
          />
          
      </Grid>
        
    </Grid>
  
</UserControl>