protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{//TODO: Only reset selected if Not over node.
base.OnMouseLeftButtonDown(e);
if (InserterOpen)
{
var r = _inserter.PerformClick(e.GetPosition(this));
if (r.Item1)
{
if (r.Item2 != null)
{
nodes.Add(r.Item2);
}
InserterOpen = false;
}
InvalidateVisual();
return;
} //Inserter Handling
if (nodeForAction != null && nodeForAction.HoveredHandle.HandleType == HandleType.Output)
{
_draggingConnection = true;
nodeForAction.BeginDrag();
InvalidateVisual();
return;
}
leftMouseDown = true;
selctedNodes = new List <Node>();
Node tempNode = null;
if (controlDown)
{
dragFrom = e.GetPosition(this);
return;
}
foreach (var node in nodes)
{
if (node.getRect(offset).Contains(e.MouseDevice.GetPosition(this)))
{
tempNode = node;
}
}
if (tempNode != null)
{
selctedNodes.Add(tempNode);
}
}
protected override void OnRender(DrawingContext drawingContext)
{
base.OnRender(drawingContext);
//SortingNodes
if (selctedNodes != null && selctedNodes.Count > 0)
{
foreach (var node in selctedNodes)
{
nodes = nodes.MoveToFront(node);
}
}
//Drawing BG;
brush.Color = ColorIdentifier.Background.get();
drawingContext.DrawRectangle(brush, null, new Rect(0, 0, ActualWidth, ActualHeight));
//Draw Grid;
SolidColorBrush b = (SolidColorBrush)ColorIdentifier.Line1.get().toBrush();
Pen pen = new Pen(b, DoubleIdentifier.GridThickness.get());
int gridSize = 20;
DrawGrid(drawingContext, pen, gridSize, ActualWidth, ActualHeight);
gridSize *= 2;
pen.Thickness = 0.8;
b.Color = ColorIdentifier.Line2.get();
DrawGrid(drawingContext, pen, gridSize, ActualWidth, ActualHeight);
//DrawContent
//Draw Connections
foreach (var node in nodes)
{
node.DrawConnections(drawingContext);
}
//Draw Nodes
if (!_draggingConnection)
{
nodeForAction = null;
}
else
{
draggingTo = null;
}
foreach (var node in nodes)
{
if (node.Draw(drawingContext, this, mousePos, offset,
selctedNodes?.Contains(node) ?? false))
{
if (!_draggingConnection)
{
nodeForAction = node;
}
else
{
draggingTo = node;
}
}
}
//Draw Inserter
if (InserterOpen)
{
if (_inserter.Perform(drawingContext, this, mousePos))
{
InserterOpen = false;
}
}
//Draw Selection
if (controlDown && leftMouseDown && dragFrom != null)
{
Brush s = ColorIdentifier.Bounding.get().toBrush();
var p = new Pen(s, 3);
p.DashStyle = DashStyles.Dash;
p.DashCap = PenLineCap.Square;
drawingContext.DrawRectangle(null, p, new Rect(dragFrom, mousePos));
}
//Drawing Bounding;
drawingContext.DrawRectangle(null, new Pen(ColorIdentifier.Bounding.get().toBrush(), DoubleIdentifier.WindowBoundingThickness.get()), new Rect(0, 0, ActualWidth, ActualHeight));
}