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Re: javafx
- From: Per Bothner <per at bothner dot com>
- To: Chris Vine <chris at cvine dot freeserve dot co dot uk>, Kawa mailing list <kawa at sourceware dot org>
- Date: Sat, 13 May 2017 09:30:35 -0700
- Subject: Re: javafx
- Authentication-results: sourceware.org; auth=none
- References: <20170513135809.48e591f2@bother.homenet>
On 05/13/2017 05:58 AM, Chris Vine wrote:
There seems to be a problem with the 'javafx-scene' macro in kawa-2.4.
First, the example at
https://www.gnu.org/software/kawa/Building-JavaFX-applications.html#idm139760384873792
fails to size the button correctly when compared with kawa-2.1.9. The
same occurs with kawa-2.3 (I have not tested with kawa-2.2).
This was a bug introduced here:
2016-06-26 Per Bothner <per@bothner.com>
* MakeScene.scm (MakeScene): Don't create Group until actually needed.
I checked in a fix, in both the master and kawa-2.4 branches.
kawa-2.3 works correctly (the buttons are correctly sized), whereas
kawa-2.4 fails to run the code, with this error:
Exception in Application start method
java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$156(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: java.util.ArrayList cannot be cast to javafx.scene.Node
at gnu.kawa.javafx.MakeScene.build(MakeScene.scm:54)
at javafx-test2.run(javafx-test2.kawa:10008)
at gnu.kawa.javafx.KawaJavafxApplication.start(defs.scm:65)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$163(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$176(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$174(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$175(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$50(GtkApplication.java:139)
... 1 more
I was able to reproduce it before, though only on the old 2.4 branch.
It seems to have gone away - though it might be JDK or other environment issues.
Let me know if you still experience it with the kawa-2.4 branch.
Of course, you could also switch to the master (formerly 'invoke') branch;
I doubt I'll make another 2.4.x release.
--
--Per Bothner
per@bothner.com http://per.bothner.com/