TreeMapLayoutAlgorithm.Direction Property
Gets or sets the layout fill direction used by the algorithm.
Namespace: DevExpress.Xpf.TreeMap
Assembly: DevExpress.Xpf.TreeMap.v24.2.dll
NuGet Package: DevExpress.Wpf.TreeMap
Declaration
Property Value
Type | Description |
---|---|
LayoutDirection | A LayoutDirection enumeration value. |
Available values:
Name | Description |
---|---|
TopLeftToBottomRight | Items are arranged from the top-left angle to the bottom-right angle. |
BottomLeftToTopRight | Items are arranged from the bottom-left angle to the top-right angle. |
TopRightToBottomLeft | Items are arranged from the top-right angle to the bottom-left angle. |
BottomRightToTopLeft | Items are arranged from the bottom-right angle to the top-left angle. |
Remarks
For instance, for the LayoutDirection.TopLeftToBottomRight value, the largest tree map item will be arranged at the top left corner and the smallest item will be placed at the bottom right corner.
Example
To customize the layout algorithm, do the following.
- Assign a newly created TreeMapLayoutAlgorithmBase class descendant object to the TreeMapControl.LayoutAlgorithm property.
- Optionally, for all predefined layout algorithms, it is possible to specify a layout’s fill direction using the
TreeMapLayoutAlgorithm.Direction
property. - In addition to the layout direction, for the SliceAndDiceLayoutAlgorithm you can change its mode using the SliceAndDiceLayoutAlgorithm.LayoutMode property.
<dxtm:TreeMapControl x:Name="treeMap"
LayoutAlgorithm="{Binding ElementName=lbLayoutAlgorithm, Path=SelectedValue}">
<!-- endregion #LayoutAlgorithm-->
<dxtm:TreeMapControl.Colorizer>
<dxtm:TreeMapPaletteColorizer/>
</dxtm:TreeMapControl.Colorizer>
<dxtm:TreeMapItemStorage>
<dxtm:TreeMapItem Label="Americas">
<dxtm:TreeMapItem Label="United States" Value="17.418"/>
<dxtm:TreeMapItem Label="Brazil" Value="2.353"/>
</dxtm:TreeMapItem>
<dxtm:TreeMapItem Label="Europe">
<dxtm:TreeMapItem Label="Germany" Value="3.859"/>
<dxtm:TreeMapItem Label="United Kingdom" Value="2.945"/>
<dxtm:TreeMapItem Label="France" Value="2.846"/>
<dxtm:TreeMapItem Label="Italy" Value="2.147"/>
<dxtm:TreeMapItem Label="Russia" Value="1.857"/>
</dxtm:TreeMapItem>
<dxtm:TreeMapItem Label="Asia">
<dxtm:TreeMapItem Label="China" Value="10.380"/>
<dxtm:TreeMapItem Label="Japan" Value="4.616"/>
<dxtm:TreeMapItem Label="India" Value="2.049"/>
</dxtm:TreeMapItem>
</dxtm:TreeMapItemStorage>
<!--region #CloseTag-->
</dxtm:TreeMapControl>
<!--endregion #CloseTag-->
<Grid Grid.Column="1" Margin="4">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0"
Margin="0,0,0,4"
Text="Layout Algorithm:"/>
<!--region #LayoutAlgorithmList-->
<ListBox x:Name="lbLayoutAlgorithm"
Grid.Row="1"
DisplayMemberPath="LayoutAlgorithmName"
SelectedValuePath="LayoutAlgorithm"
SelectedIndex="0">
<local:LayoutAlgorithmWarapper LayoutAlgorithmName="Slice and Dice">
<dxtm:SliceAndDiceLayoutAlgorithm/>
</local:LayoutAlgorithmWarapper>
<local:LayoutAlgorithmWarapper LayoutAlgorithmName="Squarified">
<dxtm:SquarifiedLayoutAlgorithm/>
</local:LayoutAlgorithmWarapper>
<local:LayoutAlgorithmWarapper LayoutAlgorithmName="Striped">
<dxtm:StripedLayoutAlgorithm/>
</local:LayoutAlgorithmWarapper>
</ListBox>