Resizeable Window Size Jumps Badly

Unity Engine
1

I was building a resizeable window with a second control inside it for one of my pet projects, but have hit an interesting snag. When the mouse is held down in the proper area for dragging, the coordinates for the current mouse position change rapidly back and forth, and I’m having a heck of a time figuring out why. Here’s the actual calculation portion of the code:

foreach (KeyValuePair<int, LayoutControl> kvp in mainLayout)
			{
				// Debug.Log (kvp.Value.placement);
				kvp.Value.placement = GUI.Window(9 + kvp.Key, kvp.Value.placement, DrawControl, "");
				LayoutControl lc;
				mainLayout.TryGetValue(kvp.Key, out lc);

				if(dragDirection != Drag.N  currentMousePosition != lastMousePosition)
				{
					Debug.Log (currentMousePosition + " : " + lastMousePosition);
					switch(dragDirection)
					{
					case Drag.L:
						float difference = currentMousePosition.x - lastMousePosition.x;
						mainLayout[kvp.Key].placement = new Rect(lc.placement.x + difference, lc.placement.y, lc.placement.width - difference, lc.placement.height);
						lastMousePosition = currentMousePosition;
						break;
					}
				}
			}

And the DrawControl function where currentMousePosition is changed:

	void DrawControl(int windowID)
	{
		LayoutControl lc;
		mainLayout.TryGetValue(windowID - 9, out lc);
		
		switch(lc.type)
		{
		case LayoutControl.controlTypes.N:
			break;
		case LayoutControl.controlTypes.T1:
			lc.data = GUI.TextField(new Rect(25, 25, lc.placement.width - 50, lc.placement.height - 25), lc.data);
			break;
		}
		
		if(GUI.Button(new Rect(0, 0, 20, 20), "X"))
		{
			mainLayout.Remove(windowID - 9);
		}
		
		if(GUI.Button(new Rect(lc.placement.width - 20, 0, 20, 20), "S"))
		{
			if(showSettings > 0)
				showSettings = 0;
			else
				showSettings = windowID;
		}
		
		Event ce = Event.current;
		
		if(ce.type == EventType.MouseDrag)
		{
			currentMousePosition = ce.mousePosition;
		}
		
		if(ce.type == EventType.MouseDown  ce.button == 0)
		{
			// Check if mouse is down inside drag areas
			if(ce.mousePosition.y > 20  ce.mousePosition.y < lc.placement.height)
			{	
				if(ce.mousePosition.x < 25)
				{
					dragDirection = Drag.L;
					lastMousePosition = ce.mousePosition;
				}
				else if(ce.mousePosition.x > lc.placement.width - 25)
				{
					dragDirection = Drag.R;
					lastMousePosition = ce.mousePosition;
				}
			}		
		}
		
		if(ce.type == EventType.MouseUp  ce.button == 0)
		{
			Debug.Log ("Released");
			dragDirection = Drag.N;
		}
		
		GUI.DragWindow();
	}

My big question would be why does it jump like that? The size changes on even a fast mouse click without moving the mouse. Heaven help me if I actually move the mouse as it goes wild, expanding rapidly and even seeming to reverse itself completely.

2

Problem solved. The biggest part was moving the mouse position recording out of the window function and into the GUI function. Putting it in the window function cause the mouse position to be given within the window the mouse is held down on.