private void HandleMouseLeftClicks()
{
Event current = Event.current;
if (!current.isMouse)
{
return;
}
if (current.button != 0)
{
return;
}
if (current.type == EventType.MouseDown)
{
//left mouse button is down and the space key is down as well -> enter panning mode
if (m_spaceKeyDown)
{
m_mode = GraphMode.Pan;
current.Use();
return;
}
if (m_altKeyPressed) //delete mode
{
BaseNodeGUI nodeGUI = GetNodeGUIOfDeleteButtonAtWorldPosition(CurrentMousePosition);
if (nodeGUI != null)
{
SoftDeleteNode(nodeGUI.Node, true, false);
current.Use();
return;
}
}
//pressed left mouse button over a socket point -> but we have at least two nodes selected -> do not allow starting any connections
if (WindowSettings.SelectedNodes.Count < 2)
{
if (m_currentHoveredVirtualPoint != null)
{
// if (current.alt)
if (m_altKeyPressed)
{
//pressed left mouse button over a socket virtual point while holding down Alt -> Disconnect Virtual Point
DisconnectVirtualPoint(m_currentHoveredVirtualPoint, true);
}
else
{
//pressed left mouse button over a socket connection point -> it's a possible start of a connection
m_activeSocket = m_currentHoveredVirtualPoint.Socket; //set the socket as the active socket
m_mode = GraphMode.Connect; //set the graph in connection mode
}
current.Use();
return;
}
Socket socket = GetSocketAtWorldPositionFromHoverRect(CurrentMousePosition);
if (socket != null)
{
// if (current.alt)
if (m_altKeyPressed)
{
//pressed left mouse button over a socket while holding down Alt -> Remove Socket
RemoveSocket(socket, true);
}
else
{
//pressed left mouse button over a socket -> it's a possible start of a connection
m_activeSocket = socket; //set the socket as the active socket
m_mode = GraphMode.Connect; //set the graph in connection mode
}
current.Use();
return;
}
}
//pressed left mouse button over a node -> check to see if it's inside the header (if no node is currently selected) or it just over a node (if at least 2 nodes are selected)
if (m_currentHoveredNode != null)
{
if (GetNodeGridRect(m_currentHoveredNode).Contains(CurrentMousePosition) || //if mouse is inside node -> allow dragging
WindowSettings.SelectedNodes.Count > 1) //OR if there are at least 2 nodes selected -> allow dragging from any point on the node
{
//pressed left mouse button over a node -> select/deselect it
if (current.shift || current.control || current.command) //if using modifiers -> create custom selection
{
SelectNodes(new List <Node> {
m_currentHoveredNode
}, true, true); //add/remove the node to/from selection
}
else if (!WindowSettings.SelectedNodes.Contains(m_currentHoveredNode)) //we may have a selection and we do not want to override it in order to be able to start dragging
{
SelectNodes(new List <Node> {
m_currentHoveredNode
}, false, true); //select this node only
}
//allow dragging ONLY IF the mouse is over a selected node
//in the previous lines we only checked if it's over a node, but not if the node we are hovering over is currently selected
if (WindowSettings.SelectedNodes.Contains(m_currentHoveredNode))
{
if (Selection.activeObject != m_currentHoveredNode)
{
Selection.activeObject = m_currentHoveredNode; //select the node
}
//pressed left mouse button over a node -> it's a possible start drag
PrepareToDragSelectedNodes(CurrentMousePosition);
m_mode = GraphMode.Drag;
}
}
current.Use();
return;
}
//pressed left mouse button over nothing -> it's a possible start selection
PrepareToCreateSelectionBox(CurrentMousePosition);
current.Use();
return;
}
if (current.type == EventType.MouseDrag)
{
//left mouse click is dragging and the graph is in panning mode
if (m_mode == GraphMode.Pan)
{
//check that the space key is held down -> otherwise exit pan mode
if (!m_spaceKeyDown)
{
m_mode = GraphMode.None;
}
else
{
DoPanning(current);
}
current.Use();
return;
}
//mouse left click is dragging a connection
if (m_mode == GraphMode.Connect)
{
if (m_currentHoveredSocket != null) //mouse is over a socket -> color the line to green if connection is possible or red otherwise
{
m_createConnectionLineColor = m_activeSocket.CanConnect(m_currentHoveredSocket) ? Color.green : Color.red;
}
else if (m_currentHoveredVirtualPoint != null) //mouse is over a socket connection point -> color the line to green if connection is possible or red otherwise
{
m_createConnectionLineColor = m_activeSocket.CanConnect(m_currentHoveredVirtualPoint.Socket) ? Color.green : Color.red;
}
else //mouse is not over anything connectable -> show the connection point color to look for
{
m_createConnectionLineColor =
m_activeSocket.IsInput
? DGUI.Colors.GetDColor(DGUI.Colors.NodyOutputColorName).Normal //source socket is input -> looking for an output socket -> color the line to the output color
: DGUI.Colors.GetDColor(DGUI.Colors.NodyInputColorName).Normal; //source socket is output -> looking for an input socket -> color the line to the input color
}
current.Use();
return;
}
//mouse left click is dragging one or more nodes
if (m_mode == GraphMode.Drag) // && GUIUtility.hotControl == dragNodesControlId)
{
m_isDraggingAnimBool.target = false;
RecordUndo("Move Nodes");
UpdateSelectedNodesWhileDragging();
current.Use();
return;
}
//mouse left click is dragging and creating a selection box <- we know this because the the mouse is not over a point nor a node
if (m_startSelectPoint != null)
{
m_mode = GraphMode.Select;
}
if (m_mode == GraphMode.Select)
{
UpdateSelectionBox(CurrentMousePosition);
UpdateSelectBoxSelectedNodesWhileSelecting(current);
UpdateNodesSelectedState(m_selectedNodesWhileSelecting);
current.Use();
return;
}
}
if (current.type == EventType.MouseUp)
{
if (RegisteredDoubleClick)
{
if (m_previousHoveredNode != null)
{
NodesGUIsDatabase[m_previousHoveredNode.Id].OnDoubleClick(this);
}
}
//lifted left mouse button and was panning (space key was/is down) -> reset graph to idle
if (m_mode == GraphMode.Pan)
{
m_mode = GraphMode.None;
current.Use();
return;
}
//lifted left mouse button and was dragging -> reset graph to idle
if (m_mode == GraphMode.Drag)
{
m_initialDragNodePositions.Clear();
m_isDraggingAnimBool.target = true;
m_mode = GraphMode.None;
current.Use();
return;
}
//lifted left mouse button and was selecting via selection box -> end selections and reset graph to idle mode
if (m_mode == GraphMode.Select)
{
EndDragSelectedNodes();
m_mode = GraphMode.None;
current.Use();
return;
}
//check if this happened over another socket or connection point
if (m_currentHoveredSocket != null)
{
//lifted left mouse button over a socket
if (m_activeSocket != null && //if there is an active socket
m_activeSocket != m_currentHoveredSocket && //and it's not this one
m_activeSocket.CanConnect(m_currentHoveredSocket)) //and the two sockets can get connected
{
ConnectSockets(m_activeSocket, m_currentHoveredSocket); //connect the two sockets
}
else //this was a failed connection attempt
{
GraphEvent.Send(GraphEvent.EventType.EVENT_CONNECTING_END); //send a graph event
}
m_activeSocket = null; //clear the active socket
m_mode = GraphMode.None; //set the graph in idle mode
current.Use();
return;
}
if (m_currentHoveredVirtualPoint != null)
{
//lifted left mouse button over a socket connection point
if (m_activeSocket != null && //if there is an active socket
m_activeSocket != m_currentHoveredVirtualPoint.Socket && //and it's not this one
m_activeSocket.CanConnect(m_currentHoveredVirtualPoint.Socket)) //and the two sockets can get connected
{
ConnectSockets(m_activeSocket, m_currentHoveredVirtualPoint.Socket); //connect the two sockets
}
else //this was a failed connection attempt
{
GraphEvent.Send(GraphEvent.EventType.EVENT_CONNECTING_END); //send a graph event
}
m_activeSocket = null; //clear the active socket
m_mode = GraphMode.None; //set the graph in idle mode
current.Use();
return;
}
//it a connecting process was under way -> clear it
//lifted left mouse button, but no virtual point was under the mouse position
if (m_mode == GraphMode.Connect)
{
m_activeSocket = null; //clear the active socket
m_mode = GraphMode.None; //set the graph in idle mode
}
Node node = GetNodeAtWorldPosition(CurrentMousePosition);
if (node != null)
{
m_mode = GraphMode.None; //set the graph in idle mode
current.Use();
return;
}
//lifted mouse left button over nothing -> deselect all and select the graph itself
ExecuteGraphAction(GraphAction.DeselectAll); //deselect all nodes and select the graph itself
m_mode = GraphMode.None; //set the graph in idle mode
current.Use();
return;
}
//check if the developer released the left mouse button outside of the graph window
if (current.rawType == EventType.MouseUp || current.rawType == EventType.MouseLeaveWindow)
{
switch (m_mode)
{
case GraphMode.Select:
EndDragSelectedNodes();
m_mode = GraphMode.None;
current.Use();
break;
}
}
}
public static bool CanConnect(string host, int port, TimeSpan timeout, ProtocolType protocolType = ProtocolType.Tcp)
{
using (var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, protocolType)) {
return(sock.CanConnect(host, port, timeout));
}
}