MainWindow.xaml

<Window x:Class="Animperium.MainWindow"
        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:controls="clr-namespace:Animperium.Controls"
        mc:Ignorable="d"
        Title="MainWindow" Height="720" Width="1080">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="24"/>
            <RowDefinition Height="1*"/>
            <RowDefinition Height="192"/>
        </Grid.RowDefinitions>

        <Menu x:Name="MainMenu" Background="#222" Grid.Row="0"/>
        <controls:AnimationCanvas x:Name="AnimationCanvas" Grid.Row="1"/>
        <Grid x:Name="MainEditorGrid" Grid.Row="2" Background="LightGray">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="144"/>
                <ColumnDefinition Width="1*" MinWidth="72" MaxWidth="144"/>
                <ColumnDefinition Width="1*" MinWidth="72" MaxWidth="144"/>
                <ColumnDefinition Width="4*"/>
            </Grid.ColumnDefinitions>

            <controls:ToolView x:Name="ToolView"/>
            <TreeView Grid.Column="1" Background="WhiteSmoke"/>
            <controls:PropertyPanel Grid.Column="2"/>
            <controls:AnimationPanel x:Name="AnimationPanel" Grid.Column="3"/>
        </Grid>
    </Grid>
</Window>