private void GUIHandleEvents(Rect graphArea, float graphXOffset)
{
Event evt = Event.current;
Vector2 mPos = evt.mousePosition + new Vector2(-graphXOffset, 0.0f),
localMPos = mPos + CamOffset;
switch (evt.type)
{
case EventType.MouseUp:
draggingMouseDown = false;
break;
case EventType.MouseDrag:
if (draggingMouseDown && draggingWindowID < -1)
{
CamOffset -= Event.current.delta;
Repaint();
}
break;
case EventType.MouseDown:
if (Event.current.button == 0)
{
if (CurrentlyPlacing != null)
{
Node n = CurrentlyPlacing.NodeFactory(Grph, new Rect(localMPos, Vector2.one));
//Double-check that the node is serializable.
if ((n.GetType().Attributes & System.Reflection.TypeAttributes.Serializable) == 0)
{
EditorUtility.DisplayDialog("Not serializable!",
"This node, type '" + n.GetType().ToString() +
"', isn't marked with the 'Serializable' attribute! " +
"Fix this problem in code before using this node.",
"OK");
}
else
{
Grph.AddNode(n);
if (!unsavedStr.Contains("added node"))
unsavedStr = "added node, ";
Repaint();
}
CurrentlyPlacing = null;
}
else
{
activeWindowID = -2;
foreach (Node n in Grph.Nodes)
{
if (n.Pos.Contains(mPos))
{
activeWindowID = n.UID;
}
}
if (activeWindowID == -2)
{
EditorGUIUtility.editingTextField = false;
}
}
}
else if (Event.current.button == 1)
{
//If a node is currently being placed, cancel it.
if (CurrentlyPlacing != null)
{
CurrentlyPlacing = null;
}
//Otherwise, see if we can drag the view.
else
{
draggingMouseDown = true;
draggingWindowID = -2;
foreach (Node n in Grph.Nodes)
{
if (n.Pos.Contains(mPos))
{
activeWindowID = n.UID;
draggingWindowID = activeWindowID;
}
}
if (Grph.OutputPos.Contains(mPos))
{
draggingWindowID = -1;
}
}
}
break;
case EventType.ContextClick:
//If a node is currently being placed, cancel it.
if (CurrentlyPlacing != null)
CurrentlyPlacing = null;
break;
case EventType.ValidateCommand:
//Keeping this here in case we want to react to special events later.
if (!EditorGUIUtility.editingTextField)
{
//switch (evt.commandName)
//{
//}
}
break;
case EventType.KeyDown:
//Add certain kinds of nodes for different keystrokes.
Node nd = null;
switch (evt.keyCode)
{
case KeyCode.Plus:
case KeyCode.KeypadPlus:
if (!EditorGUIUtility.editingTextField)
{
nd = new SimpleNode(new Rect(localMPos, Vector2.one),
"'f1' + 'f2'", "Add",
new SimpleNode.Param("f1", 0.0f),
new SimpleNode.Param("f2", 0.0f));
}
break;
case KeyCode.Minus:
case KeyCode.KeypadMinus:
if (!EditorGUIUtility.editingTextField)
{
nd = new SimpleNode(new Rect(localMPos, Vector2.one),
"'f1' - 'f2'", "Subtract",
new SimpleNode.Param("f1", 0.0f),
new SimpleNode.Param("f2", 0.0f));
}
break;
case KeyCode.Asterisk:
case KeyCode.KeypadMultiply:
if (!EditorGUIUtility.editingTextField)
{
nd = new SimpleNode(new Rect(localMPos, Vector2.one),
"'f1' * 'f2'", "Multiply",
new SimpleNode.Param("f1", 1.0f),
new SimpleNode.Param("f2", 1.0f));
}
break;
case KeyCode.Slash:
case KeyCode.Backslash:
case KeyCode.KeypadDivide:
if (!EditorGUIUtility.editingTextField)
{
nd = new SimpleNode(new Rect(localMPos, Vector2.one),
"'f1' / 'f2'", "Divide",
new SimpleNode.Param("f1", float.NaN),
new SimpleNode.Param("f2", 1.0f));
}
break;
}
if (nd != null && !EditorGUIUtility.editingTextField)
{
Grph.AddNode(nd);
if (!unsavedStr.Contains("added node"))
unsavedStr += "added node, ";
Repaint();
}
break;
}
}
