kmpdfkit_demo/ComPDFKit.Demo/PageEditor/CropWindow.xaml

<Window x:Class="ComPDFKitDemo.PageEditor.CropWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        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"
        xmlns:local="clr-namespace:ComPDFKitDemo.PageEditor"
        mc:Ignorable="d"
        Title="CropWindow" Height="520" Width="600" WindowStartupLocation="CenterScreen" ShowInTaskbar="False" ResizeMode="CanMinimize">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="200"></ColumnDefinition>
            <ColumnDefinition Width="*"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"></RowDefinition>
            <RowDefinition Height="auto"></RowDefinition>
        </Grid.RowDefinitions>
        <Border BorderThickness="1" BorderBrush="LightGray" Margin="10" Padding="10,5,10,5">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="auto"></RowDefinition>
                    <RowDefinition Height="auto"></RowDefinition>
                    <RowDefinition Height="auto"></RowDefinition>
                </Grid.RowDefinitions>

                <ComboBox Name="CropTypeBox">
                    <ComboBoxItem Content="MediaBox"></ComboBoxItem>
                    <ComboBoxItem Content="CropBox" IsSelected="True"></ComboBoxItem>
                    <ComboBoxItem Content="BleedBox"></ComboBoxItem>
                    <ComboBoxItem Content="TrimBox"></ComboBoxItem>
                    <ComboBoxItem Content="ArtBox"></ComboBoxItem>
                </ComboBox>
                
                <Grid Grid.Row="1">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="auto"></ColumnDefinition>
                        <ColumnDefinition Width="*"></ColumnDefinition>
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                    </Grid.RowDefinitions>
                    <TextBlock Grid.ColumnSpan="2" Margin="10,10,0,10">Constrain Proportions:</TextBlock>
                    <TextBlock Grid.Row="1" Width="50" Margin="10,20,0 0">Left:</TextBlock>
                    <TextBox Name="LeftText" InputScope="Number" Grid.Row="1" Height="20" Grid.Column="1" Margin="10,20,0 0" IsReadOnly="{Binding ElementName=EnableCheck,Path=IsChecked}" TextAlignment="Center"></TextBox>

                    <TextBlock Grid.Row="2" Width="50" Margin="10,20,0 0">Top:</TextBlock>
                    <TextBox Name="TopText" InputScope="Number" Grid.Row="2" Height="20" Grid.Column="1" Margin="10,20,0 0" IsReadOnly="{Binding ElementName=EnableCheck,Path=IsChecked}" TextAlignment="Center"></TextBox>

                    <TextBlock Grid.Row="3" Width="50" Margin="10,20,0 0">Right:</TextBlock>
                    <TextBox Name="RightText" InputScope="Number" Grid.Row="3" Height="20" Grid.Column="1" Margin="10,20,0 0" IsReadOnly="{Binding ElementName=EnableCheck,Path=IsChecked}" TextAlignment="Center"></TextBox>

                    <TextBlock Grid.Row="4" Width="50" Margin="10,20,0 0">Bottom:</TextBlock>
                    <TextBox Name="BottomText" InputScope="Number" Grid.Row="4" Height="20" Grid.Column="1" Margin="10,20,0 0" IsReadOnly="{Binding ElementName=EnableCheck,Path=IsChecked}" TextAlignment="Center"></TextBox>

                    <StackPanel Grid.Row="5" Grid.ColumnSpan="2" Margin="10,10,0 0">
                        <CheckBox Name="EnableCheck">Disable Input</CheckBox>
                        <Button Margin="0,10,0,0" Click="RefreshButton_Click">Refresh</Button>
                    </StackPanel>

                </Grid>

                <Grid Grid.Row="2">
                    <Grid.RowDefinitions>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                        <RowDefinition Height="auto"></RowDefinition>
                    </Grid.RowDefinitions>
                    <TextBlock Grid.ColumnSpan="2" Margin="10,20,0,10">Page Ranges:</TextBlock>
                    <RadioButton Grid.Row="1" Margin="10,5,0,10" Checked="RadioButton_Checked" Tag="AllRadioBtn">All Pages</RadioButton>
                    <RadioButton Name="RangeRadioBtn" Grid.Row="2" Margin="10,5,0,10" IsChecked="True" Checked="RadioButton_Checked" Tag="RangeRadioBtn">Ranges</RadioButton>
                    <StackPanel Grid.Row="3" Orientation="Horizontal" Margin="5,10,0,10">
                        <TextBox Name="StartPageText" Width="40" Height="20" TextAlignment="Center"></TextBox>
                        <TextBlock Padding="3,0,3,0"> To</TextBlock>
                        <TextBox Name="EndPageText" Width="40" Height="20" TextAlignment="Center"></TextBox>
                        <TextBlock Name="PageCountText" Padding="3,0,0,0"></TextBlock>
                    </StackPanel>
                </Grid>
            </Grid>
        </Border>

        <Border  Grid.Column="1" BorderThickness="1" BorderBrush="LightGray" Margin="10" Padding="10,5,10,5">
            <local:CropControl x:Name="CropUI" CropChanged="CropUI_CropChanged">

            </local:CropControl>
        </Border>
        <StackPanel Grid.Row="1" Grid.ColumnSpan="2" Orientation="Horizontal" HorizontalAlignment="Right">
            <Button Padding="20,2,20,2" Margin="0,5,10,5" Click="SaveButton_Click">Ok</Button>
            <Button Padding="10,2,10,2" Margin="0,5,10,5" Click="CancelButton_Click">Cancel</Button>
        </StackPanel>
    </Grid>
</Window>