public void Register(HandleInputMode inputMode)
{
this.inputMode = inputMode;
inputMode.DragStarted += InputModeOnDragStarted;
inputMode.DragCanceled += InputModeOnDragCanceled;
inputMode.DragFinished += InputModeOnDragFinished;
}
/// <summary>
/// Adds the input modes that handle the resizing and movement of the rectangular area.
/// </summary>
/// <param name="inputMode"></param>
private void AddClearRectInputModes(MultiplexingInputMode inputMode)
{
// create handles for interactively resizing the rectangle
var rectangleHandles = new RectangleReshapeHandleProvider(clearRect)
{
MinimumSize = new SizeD(10, 10)
};
// create a mode that deals with the handles
var handleInputMode = new HandleInputMode {
Priority = 1
};
// add it to the graph editor mode
inputMode.Add(handleInputMode);
// now the handles
var inputModeContext = Contexts.CreateInputModeContext(handleInputMode);
handleInputMode.Handles = new DefaultObservableCollection <IHandle> {
rectangleHandles.GetHandle(inputModeContext, HandlePositions.NorthEast),
rectangleHandles.GetHandle(inputModeContext, HandlePositions.NorthWest),
rectangleHandles.GetHandle(inputModeContext, HandlePositions.SouthEast),
rectangleHandles.GetHandle(inputModeContext, HandlePositions.SouthWest),
};
// create a mode that allows for dragging the rectangle at the sides
var moveInputMode = new MoveInputMode {
PositionHandler = new RectanglePositionHandler(clearRect),
HitTestable = HitTestables.Create((context, location) => clearRect.Contains(location)),
Priority = 41
};
// handle dragging the rectangle
moveInputMode.DragStarting += OnDragStarting;
moveInputMode.Dragged += OnDragged;
moveInputMode.DragCanceled += OnDragCanceled;
moveInputMode.DragFinished += OnDragFinished;
// handle resizing the rectangle
handleInputMode.DragStarting += OnDragStarting;
handleInputMode.Dragged += OnDragged;
handleInputMode.DragCanceled += OnDragCanceled;
handleInputMode.DragFinished += OnDragFinished;
// add it to the edit mode
inputMode.Add(moveInputMode);
}
/// <summary>
/// Adds the view modes that handle the resizing and movement of the export rectangle.
/// </summary>
/// <param name="inputMode"></param>
private void AddExportRectInputModes(MultiplexingInputMode inputMode)
{
// create handles for interactivel resizing the export rectangle
var rectangleHandles = new RectangleReshapeHandleProvider(exportRect)
{
MinimumSize = new SizeD(1, 1)
};
// create a mode that deals with the handles
var exportHandleInputMode = new HandleInputMode {
Priority = 1
};
// add it to the graph editor mode
inputMode.Add(exportHandleInputMode);
// now the handles
var inputModeContext = Contexts.CreateInputModeContext(exportHandleInputMode);
exportHandleInputMode.Handles = new DefaultObservableCollection <IHandle>
{
rectangleHandles.GetHandle(inputModeContext, HandlePositions.NorthEast),
rectangleHandles.GetHandle(inputModeContext, HandlePositions.NorthWest),
rectangleHandles.GetHandle(inputModeContext, HandlePositions.SouthEast),
rectangleHandles.GetHandle(inputModeContext, HandlePositions.SouthWest),
};
// create a mode that allows for dragging the export rectangle at the sides
var moveInputMode = new MoveInputMode
{
PositionHandler = new ExportRectanglePositionHandler(exportRect),
HitTestable = HitTestables.Create(
(context, location) => {
var path = new GeneralPath(5);
path.AppendRectangle(exportRect, false);
return(path.PathContains(location, context.HitTestRadius));
}),
Priority = 41
};
// add it to the edit mode
inputMode.Add(moveInputMode);
}
public void Uninstall(IInputModeContext context)
{
context.GetGraph().NodeLayoutChanged -= NodeLayoutChanged;
var geim = context.ParentInputMode as GraphEditorInputMode;
geim.MultiSelectionStarted -= MultiSelectionStarted;
geim.MultiSelectionFinished -= MultiSelectionFinished;
((GraphControl)context.CanvasControl).Selection.ItemSelectionChanged -= ItemSelectionChanged;
handleInputMode.DragStarted -= RegisterReshapedNodes;
handleInputMode.DragStarting -= moveHandleOrthogonalHelper.Starting;
handleInputMode.DragFinished -= moveHandleOrthogonalHelper.Finished;
handleInputMode.DragCanceled -= moveHandleOrthogonalHelper.Canceled;
handleInputMode.DragStarted -= moveHandleOrthogonalHelper.Started;
RemoveRectangleVisualization();
handleInputMode.Uninstall(context);
handleInputMode = null;
InputModeContext = null;
}
public void Install(IInputModeContext context, ConcurrencyController controller)
{
InputModeContext = context;
var geim = context.ParentInputMode as GraphEditorInputMode;
if (geim == null)
{
throw new InvalidOperationException("NodeGroupResizingInputMode must be installed as child mode of GraphEditorInputMode");
}
// create own HandleInputMode for the handles
handleInputMode = new HandleInputMode {
Priority = 1
};
// notify the GraphSnapContext which nodes are resized and shouldn't provide SnapLines
handleInputMode.DragStarted += RegisterReshapedNodes;
// forward events to OrthogonalEdgeEditingContext so it can handle keeping edges at reshaped nodes orthogonal
handleInputMode.DragStarting += moveHandleOrthogonalHelper.Starting;
handleInputMode.DragStarted += moveHandleOrthogonalHelper.Started;
handleInputMode.DragFinished += moveHandleOrthogonalHelper.Finished;
handleInputMode.DragCanceled += moveHandleOrthogonalHelper.Canceled;
handleInputMode.Install(context, controller);
handleInputMode.Enabled = false;
// update handles depending on the changed node selection
geim.MultiSelectionStarted += MultiSelectionStarted;
geim.MultiSelectionFinished += MultiSelectionFinished;
((GraphControl)context.CanvasControl).Selection.ItemSelectionChanged += ItemSelectionChanged;
// add a NodeLayoutChanged listener so the reshape rect is updated when the nodes are moved (e.g. through
// layout animations or MoveInputMode).
context.GetGraph().NodeLayoutChanged += NodeLayoutChanged;
}