private void Thumb_DragDelta(object sender, DragDeltaEventArgs e)
{
if (IsCreatingConnection)
{
return;
}
Thumb thumb = (Thumb)sender;
var node = (VisualGraphComponentViewModel)thumb.DataContext;
node.X += e.HorizontalChange;
node.Y += e.VerticalChange;
VisualNodeViewModel visualNode = node as VisualNodeViewModel;
if (visualNode != null)
{
foreach (var input in visualNode.Inputs)
{
input.Pin.ParentMoved();
}
foreach (var output in visualNode.Outputs)
{
output.Pin.ParentMoved();
}
foreach (var executionInput in visualNode.ExecutionInputs)
{
executionInput.Pin.ParentMoved();
}
foreach (var executionOutput in visualNode.ExecutionOutputs)
{
executionOutput.Pin.ParentMoved();
}
return;
}
VisualConstantNodeViewModel constantNode = node as VisualConstantNodeViewModel;
if (constantNode != null)
{
constantNode.OutputPin.Pin.ParentMoved();
return;
}
}
private void Editor_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
// If we are creating a connection...
if (IsCreatingConnection)
{
ConnectionBuilderViewModel connectionBuilder = (ConnectionBuilderViewModel)NewConnectionLine.DataContext;
NodePinViewModel connectionRootPin = (NodePinViewModel)connectionBuilder.OutputPin.DataContext;
// Check if we are clicking from an input pin
// If we are, try to automatically place a constant node connecting to the input pin
if (connectionRootPin.IsOutputPin == false && connectionRootPin.IsExecutionPin == false)
{
GraphEditorViewModel viewModel = (GraphEditorViewModel)this.DataContext;
VisualConstantNodeViewModel autoConstantNode = new VisualConstantNodeViewModel(connectionRootPin.DataType)
{
X = viewModel.MousePoint.X,
Y = viewModel.MousePoint.Y
};
viewModel.VisualNodes.Add(autoConstantNode);
// Generates the view for the NodePin in the constant node before we add it
Dispatcher.Invoke(new Action(() => { }), DispatcherPriority.ContextIdle, null);
viewModel.Connections.Add(new ConnectionViewModel(autoConstantNode.OutputPin.Pin, connectionRootPin.Pin));
}
IsCreatingConnection = false;
return;
}
// If we aren't creating a connection just deselect any nodes
foreach (VisualGraphComponentViewModel node in ((GraphEditorViewModel)DataContext).VisualNodes)
{
node.IsSelected = false;
}
}
