/// <summary>
/// Creates a mode and registers it as the
/// <see cref="CanvasControl.InputMode"/>.
/// </summary>
protected virtual void InitializeInputModes()
{
// Create a multiplexing input mode and that uses a MoveViewportInputMode and add a
// wait input mode that will be used by the animator to block user input during
// animations automatically.
MultiplexingInputMode multiplexingInputMode = new MultiplexingInputMode();
multiplexingInputMode.Add(new WaitInputMode {
Priority = 0
});
multiplexingInputMode.Add(new MoveViewportInputMode {
Priority = 5
});
graphControl.InputMode = multiplexingInputMode;
}
/// <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>
/// Helper method that allows for reusing this window in other applications.
/// </summary>
/// <param name="graphControl">The graph control.</param>
public void ShowGraph(GraphControl graphControl)
{
this.graphControl.Graph = graphControl.Graph;
this.graphControl.Selection.Clear(); // or possibly: = graphControl.Selection;
this.graphControl.ContentRect = graphControl.ContentRect.GetEnlarged(20);
// show all of the contents
this.graphControl.FitContent();
// or possibly the same viewport
// this.graphControl.Zoom = graphControl.Zoom;
// this.graphControl.ViewPoint = graphControl.ViewPoint;
var inputMode = new MultiplexingInputMode();
// set the whole content rect as the export rectangle
exportRect.Reshape(graphControl.ContentRect);
// or possibly just the visible viewport
//exportRect.Set(graphControl.Viewport);
// create mode which supports moving the viewport by pressing ctrl
var moveViewportInputMode = new MoveViewportInputMode
{
PressedRecognizer =
(source, args) =>
MouseEventRecognizers.LeftPressed(source, args) &&
(Keyboard.Modifiers & ModifierKeys.Control) == ModifierKeys.Control
};
inputMode.Add(moveViewportInputMode);
AddExportRectInputModes(inputMode);
this.graphControl.InputMode = inputMode;
}
/// <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 static void AddConcurrent(this MultiplexingInputMode mux, IInputMode mode)
{
mux.Add(mode);
}