Can Javafx cursor be disabled?

[Doswald Michael]

Hi,

I had the same problem using i.MX6 with a touchscreen and Monocle on framebuffer
(with JavaFX 1.8u151-b12). Unfortunately I could not find a workaround because, as you 
said, the gray cursor placeholder is displayed before any application code is 
executed. So there is no way to disable it using Java code.

Since I compile the JavaFX part myself, I added the following patch to hide the
cursor on startup. This seems to work for me:

--------------------------------------------------------------------------------
diff -r fa07d9fbd309 modules/graphics/src/main/java/com/sun/glass/ui/monocle/MX6Cursor.java
--- a/modules/graphics/src/main/java/com/sun/glass/ui/monocle/MX6Cursor.java	Tue Sep 13 12:52:05 2016 -0400
+++ b/modules/graphics/src/main/java/com/sun/glass/ui/monocle/MX6Cursor.java	Mon Sep 19 18:25:20 2016 +0200
@@ -154,6 +154,8 @@
         NativeScreen screen = NativePlatformFactory.getNativePlatform().getScreen();
         screenWidth = screen.getWidth();
         screenHeight = screen.getHeight();
+        
+        setVisibility(false);
     }
 
     @Override
--------------------------------------------------------------------------------
     
Regards,
Michael
     
> Hi, thanks for.
> 
> Yes we are currently running without X and using Monocle.
> 
> Maybe I'll put up a feature request as with embedded devices often the
> cursor is not  a relevant modality.
> 
> 
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Sat, 1 Jun 2019 22:23:41 +0000
>> From: Thiago Milczarek Sayao <thiago.sayao at clamed.com.br>
>> To: "openjfx-dev at openjdk.java.net" <openjfx-dev at openjdk.java.net>
>> Subject: RE: Can Javafx cursor be disabled?
>> Message-ID:
>> 	<CP2P15201MB2228D69EB9511A2327182751DE1A0 at CP2P15201MB2228.LAMP152.PROD.OUTLOOK.COM>
>> 	
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Just realized you might be using Monocle.
>>
>> So it might be handling the cursor. Don't know how to hide it..
>> ________________________________
>> De: openjfx-dev <openjfx-dev-bounces at openjdk.java.net> em nome de Thiago Milczarek Sayao <thiago.sayao at clamed.com.br>
>> Enviado: s?bado, 1 de junho de 2019 19:18
>> Para: openjfx-dev at openjdk.java.net
>> Assunto: RE: Can Javafx cursor be disabled?
>>
>> I don't think javafx supports framebuffer.
>>
>> It might be working on gtk2, but will not work on gtk3 since the framebuffer backend was removed from gdk.
>>
>> So I suggest you move to X11.
>> ________________________________
>> De: openjfx-dev <openjfx-dev-bounces at openjdk.java.net> em nome de Dell Green <Dell.Green at ideaworks.co.uk>
>> Enviado: s?bado, 1 de junho de 2019 16:28
>> Para: openjfx-dev at openjdk.java.net
>> Assunto: RE: Can Javafx cursor be disabled?
>>
>> Thanks for that, good to know. I should of mentioned that we are not using X, but using framebuffer instead
>>
>> Message: 2
>> Date: Fri, 31 May 2019 14:45:11 +0000
>> From: Thiago Milczarek Sayao <thiago.sayao at clamed.com.br>
>> To: "openjfx-dev at openjdk.java.net" <openjfx-dev at openjdk.java.net>
>> Subject: RE: Can Javafx cursor be disabled?
>> Message-ID:
>>         <CP2P15201MB2228E9E20DE675B52AE4B7A1DE190 at CP2P15201MB2228.LAMP152.PROD.OUTLOOK.COM>
>>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> If you are using X.org, the cursor is controlled by X, so I would look for a X configuration to disable cursor.
>>
>> https://unix.stackexchange.com/questions/346903/can-i-remove-the-mouse-pointer-entirely-from-x
>>
>> ________________________________
>> De: openjfx-dev <openjfx-dev-bounces at openjdk.java.net> em nome de Dell Green <Dell.Green at ideaworks.co.uk>
>> Enviado: sexta-feira, 31 de maio de 2019 11:29
>> Para: openjfx-dev at openjdk.java.net
>> Assunto: Can Javafx cursor be disabled?
>>
>> We have a touch/rotary device that doesn't use any mouse/cursor input.
>>
>> Is there a way to tell javafx to not initialize a cursor (MX6Cursor.java in my case) on startup as we are seeing /dev/fb1 being unblanked and a grey cursor artifact drawn onto the /dev/fb1, before any user specific javafx code is created.
>>
>> I have looked through the source code and there doesn't seem to be a configurable property to control this.
>>
>> I can remove /dev/fb1  and javafx prints an error/stack-trace but appears to work as normal, however I'm not sure what ongoing  impact this has on javafx.
>>
>> any thoughts?
>>
>>
>>
>> End of openjfx-dev Digest, Vol 91, Issue 1
>> ******************************************
>>
>>
>>
>>
>> End of openjfx-dev Digest, Vol 91, Issue 2
>> ******************************************
>>