private void resetState()
{
_bIsAreaSelecting = false;
_bIsDragging = false;
_bIsMakingConnection = false;
_draggingNode = null;
_outputKnobToConnect = null;
}
private void handleNodeConnection(Event e)
{
// Start a connection action.
if (e.type == EventType.MouseDown && e.button == 0)
{
Action <BonsaiOutputKnob> outputCallback = (output) =>
{
e.Use();
_bIsMakingConnection = true;
_outputKnobToConnect = output;
};
// Check to see if we are making connection starting from output knob.
bool bResult = _window.editor.OnMouseOverOutput(outputCallback);
// Check if we are making connection starting from input
if (!bResult)
{
Action <BonsaiInputKnob> inputCallback = (input) =>
{
// Starting a connection from input means that its connected
// output will change its input.
if (input.outputConnection != null)
{
e.Use();
_bIsMakingConnection = true;
_outputKnobToConnect = input.outputConnection;
// We disconnect the input since we want to change it to a new input.
input.outputConnection.RemoveInputConnection(input);
}
};
_window.editor.OnMouseOverInput(inputCallback);
}
}
// Finish making the connection.
else if (e.type == EventType.MouseUp && e.button == 0 && _bIsMakingConnection)
{
Action <BonsaiNode> callback = (node) =>
{
_outputKnobToConnect.Add(node.Input);
// When a connection is made, we need to make sure the positional
// ordering reflects the internal tree structure.
node.NotifyParentOfPostionalReordering();
};
_window.editor.OnMouseOverNode_OrInput(callback);
_bIsMakingConnection = false;
_outputKnobToConnect = null;
}
}
/// <summary>
/// Create a new node for the first time.
/// </summary>
/// <param name="parentCanvas">The canvas that the node belongs to.</param>
/// <param name="bCreateInput">If the node should have an input.</param>
/// <param name="bCreateOuput">If the node should have an output.</param>
public BonsaiNode(BonsaiCanvas parentCanvas, bool bCreateInput, bool bCreateOuput, bool bCanHaveMultipleChildren)
{
bodyRect = new Rect(Vector2.zero, kDefaultSize);
if (bCreateInput)
{
_inputKnob = new BonsaiInputKnob();
_inputKnob.parentNode = this;
}
if (bCreateOuput)
{
_outputKnob = new BonsaiOutputKnob();
_outputKnob.parentNode = this;
}
this.bCanHaveMultipleChildren = bCanHaveMultipleChildren;
}