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Swing in JavaFX in SWT [message #1349958]

Mon, 12 May 2014 12:34

Don Smyth

Messages: 35
Registered: April 2013

Member

Hi All,

I was interested to read Toms Schindl's blog on Embedding Swing into SWT on Java8. I've been testing the Albeiro project and the SWT_AWT bridge and have had problems with both (eg SWT_AWT bridge crash using GTK, refresh issues with Albeiro). Using JavaFX in embedded mode works without issues for me so far. Has anyone encountered any problems with using FXCanvas in embedded mode?

Cheers Don

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Re: Swing in JavaFX in SWT [message #1356807 is a reply to message #1349958]

Thu, 15 May 2014 08:21

Christian Ora

Messages: 20
Registered: May 2014

Junior Member

I've implemented a map-editor in a SwingNode, emmbedded in a FXCanvas, it worked fine so far. But it seems that the MapEditor is reacting slower.

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Re: Swing in JavaFX in SWT [message #1356893 is a reply to message #1349958]

Thu, 15 May 2014 09:14

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Hi,

Just one warning on Luna & Gtk! By default Luna uses Gtk3 but JavaFX8
(and AWT/Swing) are linked to Gtk2 [1].

And just for me to understand. You are now embedding JavaFX into SWT and
inside JavaFX you use SwingNode to embed Swing?

Tom

[1]https://bugs.eclipse.org/bugs/show_bug.cgi?id=434869

On 12.05.14 14:34, Don Smyth wrote:
> Hi All,
>
> I was interested to read Toms Schindl's blog on Embedding Swing into SWT
> on Java8. I've been testing the Albeiro project and the SWT_AWT bridge
> and have had problems with both (eg SWT_AWT bridge crash using GTK,
> refresh issues with Albeiro). Using JavaFX in embedded mode works
> without issues for me so far. Has anyone encountered any problems with
> using FXCanvas in embedded mode?
>
> Cheers Don

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Re: Swing in JavaFX in SWT [message #1357362 is a reply to message #1356893]

Thu, 15 May 2014 13:40

Don Smyth

Messages: 35
Registered: April 2013

Member

Yes I was a bit hasty in my comment that all is OK - All works OK until exit... - where as you mention there is a GTK confict:
(SWT:3078): Gtk-CRITICAL **: IA__gtk_main_quit: assertion `main_loops != NULL' failed
This was using Efxclipse Kepler 4.3.2

I'm using SwingNode eg:

/**
* Based on SwingJavaFxInteroperabilityDemo
* http://www.javaworld.com/article/2074496/core-java/integrating-javafx-2-0-with-swing-and-swt.html
*
*/
...
final FXCanvas canvas = new FXCanvas(shell, SWT.NONE);
final Scene scene = SwingSceneCreator.createSwingScene();
canvas.setScene(scene);
...

public static Scene createSwingScene()
{
final SwingNode swingNode = new SwingNode();
createSwingContent(swingNode);
StackPane pane = new StackPane();
pane.getChildren().add(swingNode);
final Scene swingScene = new Scene(pane, 250, 150);
return swingScene;
}

private static void createSwingContent(final SwingNode swingNode) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
swingNode.setContent(new JButton("Swing button"));
}
});
}

I retried against the eclipse-SDK-4.4M7-linux-gtk-x86_64-efx-1.0.0-SNAPSHOT 15-May-2014 04:24
and got much more serious error:
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f68fe90a961, pid=3663, tid=140089735137024
#
# JRE version: Java(TM) SE Runtime Environment (8.0_05-b13) (build 1.8.0_05-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.5-b02 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libgdk-x11-2.0.so.0+0x4f961] gdk_display_open+0x41
#
the fail happens in com.sun.glass.ui.Application on
protected static synchronized void loadNativeLibrary() {
// use the "platform default" name of "glass"
loadNativeLibrary("glass");
}
Cheers

D

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Re: Swing in JavaFX in SWT [message #1357381 is a reply to message #1357362]

Thu, 15 May 2014 13:48

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

On 15.05.14 15:40, Don Smyth wrote:
> Yes I was a bit hasty in my comment that all is OK - All works OK until
> exit... - where as you mention there is a GTK confict:
> (SWT:3078): Gtk-CRITICAL **: IA__gtk_main_quit: assertion `main_loops !=
> NULL' failed
> This was using Efxclipse Kepler 4.3.2
>
> I'm using SwingNode eg:
>
> /**
> * Based on SwingJavaFxInteroperabilityDemo
> *
> http://www.javaworld.com/article/2074496/core-java/integrating-javafx-2-0-with-swing-and-swt.html
>
> *
> */
> ..
> final FXCanvas canvas = new FXCanvas(shell, SWT.NONE);
> final Scene scene = SwingSceneCreator.createSwingScene();
> canvas.setScene(scene);
> ..
>
> public static Scene createSwingScene()
> {
> final SwingNode swingNode = new SwingNode();
> createSwingContent(swingNode);
> StackPane pane = new StackPane();
> pane.getChildren().add(swingNode);
> final Scene swingScene = new Scene(pane, 250, 150);
> return swingScene; }
> private static void createSwingContent(final SwingNode swingNode) {
> SwingUtilities.invokeLater(new Runnable() {
> @Override
> public void run() {
> swingNode.setContent(new JButton("Swing button"));
> }
> });
> }
>
> I retried against the
> eclipse-SDK-4.4M7-linux-gtk-x86_64-efx-1.0.0-SNAPSHOT 15-May-2014 04:24
> and got much more serious error:

Like I said - on 4.4 you need to force using Gtk2 by setting SWT_GTK3=0
in our env.

Tom

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Re: Swing in JavaFX in SWT [message #1359631 is a reply to message #1357381]

Fri, 16 May 2014 12:26

Don Smyth

Messages: 35
Registered: April 2013

Member

OK, wasn't sure where to set it, there is a blog here:

http://blog.vogella.com/2014/02/21/using-eclipse-luna-on-ubunbu/

On Linux (Efx Kepler and Efx Luna) I still get the message below on exit, on windows there are no problems (Efx Kepler).
(SWT:3116): Gtk-CRITICAL **: IA__gtk_main_quit: assertion `main_loops != NULL' failed

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Re: Swing in JavaFX in SWT [message #1359633 is a reply to message #1359631]

Fri, 16 May 2014 12:28

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

You need to file a bug against SWT and/or JavaFX.

Tom

On 16.05.14 14:26, Don Smyth wrote:
> OK, wasn't sure where to set it, there is a blog here:
>
> http://blog.vogella.com/2014/02/21/using-eclipse-luna-on-ubunbu/
>
> On Linux (Efx Kepler and Efx Luna) I still get the message below on
> exit, on windows there are no problems (Efx Kepler).
> (SWT:3116): Gtk-CRITICAL **: IA__gtk_main_quit: assertion `main_loops !=
> NULL' failed

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