Roman,

The changes you are talking about are probably far reaching and sound somewhat like the fb-toolkit proposal itself. This is tantamount to replacing
the entire AWT and 2D stack and I don't see that as a useful goal.
As noted in my initial email to the fbtoolkit proposal, toolkits are not pluggable, nor was there any design intent that they ever should be. fb-toolkit is a separate project. I expect it will remain so for the forseeable future.

-phil.

Roman Kennke wrote:
Hi there,

At the moment I'm trying to get GNU Classpath's GTK peers (and a handful
of own peer/graphicsenv implementations for embedded systems) working
with OpenJDK. I'm encountering a couple of problems and I ask myself if
the OpenJDK project has any interest in patches to improve support for
external toolkits.

For example, there's a bunch of places with code like this:

    private void initPeer() {
        if (Toolkit.getDefaultToolkit() instanceof HeadlessToolkit){
            peer =
((HeadlessToolkit)Toolkit.getDefaultToolkit()).createKeyboardFocusManagerPeer(this);
        }
if (Toolkit.getDefaultToolkit() instanceof SunToolkit){ peer = ((SunToolkit)Toolkit.getDefaultToolkit()).createKeyboardFocusManagerPeer(this); }
    }

Obviously, this wouldn't work with anything except the built-in
toolkits.

Other areas where I suspect big problems are fonts and probably images.
It seems like OpenJDK has no support for a pluggable font implementation
at all. However, the GTK peers rely on their own implementation (which
is abstracted behind an extension of FontPeer).

With the new FB-Toolkit project approved, I'd guess that there would be
interest in developing a clean(er) interface and allowing alternative
peers and graphics environments to be plugged in, is that correct? If so
I would prepare some patches soon.

/Roman

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