Detect mouseDown & mouseUp events on handles in editor

Question

In my onSceneGUI delegate I can get the mouseDown and mouseUp events for the right mouse button. I can get the mouseDown event for the left mouse button and with a lot of work using GetControlID and GUIUtility.hotControl it is possible to get the mouseUp event for the left mouse button (???). But, NOTHING happens when I click on the handles/gizmos of an object in the scene view.

It is possible to use GUIUtility.hotControl to view the id of the handle controls when they are clicked on but these change depending on how many objects there are, the order of creation or some other reason.

Do I need another delegate to intercept mouse clicks on the handles?

Any help would be very welcome.

Answer 1

Best Answer

Answer by Zergling103 · Jan 19, 2015 at 10:34 PM

Use GUI.changed.

 bool temp = GUI.changed;
 GUI.changed = false;
 Vector3 modifiedPosition = Handles.PositionHandle(GetPosition(), Quaternion.identity);
 if (GUI.changed)
 {
     Debug.Log("Position was modified!")
     SetPosition(modifiedPosition);
 }
 GUI.changed |= temp;

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Answer 2

Answer by MediaGiant · Mar 02, 2014 at 12:47 PM

It was tricky, but there is an answer, a simple answer, and it does not use reflection.

 string tempString = GUI.GetNameOfFocusedControl();
 if ((tempString == "xAxis" || tempString == "yAxis" || tempString == "zAxis") && GUIUtility.hotControl != 0)
 {
   hotControlFlag = true;  // declared elsewhere
   Debug.Log ("dragging");
 }
             
 if ((tempString == "xAxis" || tempString == "yAxis" || tempString == "zAxis") && hotControlFlag && GUIUtility.hotControl == 0)
 {
   hotControlFlag = false;
   Debug.Log ("released");
 }

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halfbakedprophet · Jul 25, 2017 at 04:28 AM 0

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This solution is much better than the "Best Answer".

Detect mouseDown & mouseUp events on handles in editor

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