Re: Problems running GTK-peers on Nokia-770

[Thomas Fitzsimmons]

On Wed, 2005-10-26 at 15:42 +0000, Clemens Eisserer wrote:
> Hello,
> 
> I've just got my Nokia770 2 days ago and today I was able to build a
> working sablevm package for it, after I sadly failed with kaffe.
> 
> It really works well (and slow ;) ) expect  some glitches with
> AWT/Peers, however one main problem is there which I wasn't able to
> solve:
> 
> As soon as I create a JFrame I get the following expections, although
> adding Swing components to a Frame works:
> jamvm[1625]: GLIB CRITICAL ** GLib-GObject - g_object_ref: assertion
> `G_IS_OBJECT (object)' failed
> java.lang.InternalError: GLib-GObject: g_object_ref: assertion
> `G_IS_OBJECT (object)' failed

My guess is that gdk_drawable_get_colormap returns something we're not
expecting.  Can you put a printf in
native/jni/gtk-peer/gnu_java_awt_peer_gtk_GdkGraphics.c in
Java_gnu_java_awt_peer_gtk_GdkGraphics_initFromImage to see what it
returns?  It looks like GDK is having trouble allocating colours in its
colormap.

Tom

>    at gnu.java.awt.peer.gtk.GdkGraphics.initFromImage (Native Method)
>    at gnu.java.awt.peer.gtk.GdkGraphics.<init> (GdkGraphics.java:108)
>    at gnu.java.awt.peer.gtk.GtkImage.getGraphics (GtkImage.java:405)
>    at gnu.java.awt.peer.gtk.GtkComponentPeer.createImage
> (GtkComponentPeer.java:236)
>    at java.awt.Component.createImage (Component.java:2083)
>    at java.awt.Component.createImage (Component.java:2081)
>    at javax.swing.RepaintManager.getOffscreenBuffer (RepaintManager.java:487)
>    at javax.swing.JComponent.paint (JComponent.java:1442)
>    at java.awt.Container$GfxPaintVisitor.visit (Container.java:1765)
>    at java.awt.Container.visitChild (Container.java:1569)
>    at java.awt.Container.visitChildren (Container.java:1531)
>    at java.awt.Container.paint (Container.java:764)
>    at gnu.java.awt.peer.gtk.GtkComponentPeer.handleEvent
> (GtkComponentPeer.java:313)
>    at java.awt.Component.dispatchEventImpl (Component.java:4845)
>    at java.awt.Container.dispatchEventImpl (Container.java:1592)
>    at java.awt.Window.dispatchEventImpl (Window.java:628)
>    at java.awt.Component.dispatchEvent (Component.java:2343)
>    at java.awt.EventQueue.dispatchEvent (EventQueue.java:475)
>    at java.awt.EventDispatchThread.run (EventDispatchThread.java:75)
> jamvm[1625]: GLIB CRITICAL ** Gdk - gdk_colormap_alloc_colors:
> assertion `GDK_IS_COLORMAP (colormap)' failed
> java.lang.InternalError: Gdk: gdk_colormap_alloc_colors: assertion
> `GDK_IS_COLORMAP (colormap)' failed
>    at gnu.java.awt.peer.gtk.GdkGraphics.setFGColor (Native Method)
>    at gnu.java.awt.peer.gtk.GdkGraphics.setColor (GdkGraphics.java:372)
> .....
> 
> Nokia claims that the modified GTK-2.6.? they use is binary compatible
> to GTK-2.6.
> I went a bit through the peers code and it was quite straightforeward
> to read, however I did not find a function call to "g_object_ref" and
> I have to admit that I am a gtk noob.
> As far as I can see either classpath makes some assumptions how GTK
> should be (low probability) or Nokia's GTK implementation is broken
> (more likely). Any ideas where the root of the problem could come
> from?
> 
> Thank you in advance, lg Clemens
> 
> 
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