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Vertex dragging behavior
Alexander Smirnov edited this page Jul 13, 2016
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Last checked against version: 2.1.8
To be able to drag vertexes along the field you can use DragBehaviour in VertexControl template. For ex.:
<!-- VERTEX DRAGGING CONTROL --> <Setter Property="local:DragBehaviour.IsDragEnabled" Value="True" /> <Setter Property="gxl:DragBehaviour.UpdateEdgesOnMove" Value="True" /> <Setter Property="local:DragBehaviour.X" Value="{Binding RelativeSource={RelativeSource Self},Path=(local:GraphAreaExample.X),Mode=TwoWay}" /> <Setter Property="local:DragBehaviour.Y" Value="{Binding RelativeSource={RelativeSource Self},Path=(local:GraphAreaExample.Y),Mode=TwoWay}" />
Additional attached properties of DragBehaviour:
- UpdateEdgesOnMove - specifies that edge routing points should be updated while dragging vertex if any ER algorithm has been used on the layout calculation stage.
- IsDragging - specifies that control is being dragged.
- IsTagged - implemented to "tag" controls in a group that for ex. allows to mark or drag such group members with a single action. Example for that feature can be found in the Showcase app.
Also you can set drag mode for all verices at once from code using GraphArea.SetVerticesDrag() method.