[SOLVED] Action Listener ignores mouse events when cursor is set to visible

yaRnMcDonuts · July 30, 2020, 12:50am

I am trying to catch click events using an ActionListener, specifically for use in a Lemur interface. (I have a drop own control that needs to be detached when the user clicks anywhere, and there are many other containers also catching clicks, so I cannot manage to do this with a single lemur mouse listener attached to a panel in the background).

In the process of doing this, I noticed that the standard ActionListener ignores MouseTriggers if you set the cursor to be visible with inputManager.setCursorVisible(true)

Is this intended to work this way? And if so does anyone have any suggested workarounds?

Thanks

sgold · July 30, 2020, 12:57am

The feature is intentional. In Maud, I worked around it by going direct to LWJGL:

import org.lwjgl.input.Mouse;
float dx = Mouse.getDX();
float dy = Mouse.getDY();

yaRnMcDonuts · July 30, 2020, 1:17am

Thanks! I did not know about that class before, but it looks quite useful. I looked over the javadoc and also found the Mouse.isButtonDown(int button) method, so everything is working now.

I appreciate the help!

pspeed · July 30, 2020, 1:21am

You should be able to set one invisible panel in the background of everything in the guiNode… it will catch all of the clicks that don’t get grabbed by something else.

yaRnMcDonuts · July 30, 2020, 1:27am

Unfortunately in this situation there are lots of other containers in the same interface that are also catching clicks, so It left many unrelated Containers where I could click without it being caught by the invisible background container.

pspeed · July 30, 2020, 1:28am

Wait… why isn’t the drop down control just a popup? I misread your post originally.

This is precisely what the popup stuff is for. Show a window on top of everything else, detach it when somewhere else is clicked.

yaRnMcDonuts · July 30, 2020, 1:35am

I did not know that a Popup already existed, and made a custom DropDownContainer class that extends Container, but it sounds like I may have reinvented the wheel in a worse way haha.

Do you have a link to an example using a popup in JME? I’m having trouble finding it with a google search for some reason. Is it a lemur speific class?

pspeed · July 30, 2020, 1:36am

github.com

jMonkeyEngine-Contributions/Lemur/blob/master/examples/demos/src/main/java/demo/PopupPanelDemoState.java

/*
 * $Id$
 * 
 * Copyright (c) 2016, Simsilica, LLC
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in 
 *    the documentation and/or other materials provided with the 
 *    distribution.
 * 
 * 3. Neither the name of the copyright holder nor the names of its 
 *    contributors may be used to endorse or promote products derived

This file has been truncated. show original

You can run the demo to see the different modalities.

asser_fahrenholz · July 30, 2020, 8:58am

Can this be used to translate the x-y into world coordinates given the camera rotation and an intersecting plane ?

pspeed · July 30, 2020, 9:05am

I mean, I guess… but what is it that you are actually trying to do? Because you could also place a cull always quad in the scene itself and get actual coordinates with a cursor listener.

Edit: but yes, if you put a screen size quad in the background of the GUI node then you can get x,y from the cursor listener on that quad. Just be careful what you consume if you also want the 3D scene to have picking.

asser_fahrenholz · July 30, 2020, 9:06am

Doing that now. Until writing this, I didnt think to be able to move that around depending on where the camera is looking.