/// <summary>
/// A <see cref="LayoutExecutor"/> that is used during the drag and drop operation.
/// </summary>
/// <remarks>
/// First, all nodes and edges are pushed back into place before the drag started. Then space
/// is made for the component at its current position. The animation morphs all elements to the
/// calculated positions.
/// </remarks>
private LayoutExecutor CreateDraggingLayoutExecutor()
{
var layout = new GivenCoordinatesStage(
clearAreaLayout = new ClearAreaLayout {
ComponentAssignmentStrategy = ComponentAssignmentStrategy.Customized,
ClearAreaStrategy = ClearAreaStrategy.PreserveShapes
});
var layoutData = new CompositeLayoutData(
resetToOriginalGraphStageData,
new ClearAreaLayoutData {
ComponentIds = { Mapper = components }
});
var items = new List <IModelItem>();
items.AddRange(Component.Nodes);
items.AddRange(Component.Edges);
clearAreaLayout.ConfigureAreaOutline(items, 10);
return(new LayoutExecutor(graphControl, layout)
{
LayoutData = layoutData,
RunInThread = true,
Duration = TimeSpan.FromMilliseconds(150)
});
}
/// <summary>
/// A <see cref="LayoutExecutor"/> that is used after the drag and drop operation is finished.
/// </summary>
/// <remarks>
/// All nodes and edges are pushed back into place before the drag started. Then space is made
/// for the component that has been dropped.
/// </remarks>
private LayoutExecutor CreateFinishedLayoutExecutor()
{
var layout = new GivenCoordinatesStage(
new ClearAreaLayout {
ComponentAssignmentStrategy = ComponentAssignmentStrategy.Customized,
ClearAreaStrategy = ClearAreaStrategy.PreserveShapes
});
var layoutData = new CompositeLayoutData(
resetToOriginalGraphStageData,
new ClearAreaLayoutData {
AreaNodes = { Source = Component.Nodes },
ComponentIds = { Mapper = components }
});
return(new LayoutExecutor(graphControl, layout)
{
LayoutData = layoutData,
RunInThread = true,
Duration = TimeSpan.FromMilliseconds(150)
});
}
