Re: [ve-dev] Extending The visual editor

[Joe Winchester <WINCHEST@xxxxxxxxxx>]

Hi Sheldon,

What the VE shows on the canvas is basically
a screen capture of the live widgets running in a JVM, for which it knows
how to deal with AWT/Swing or SWT.  For your GTK+ widgets if you could
get Java wrappers for them that were SWT then the VE should be able to
talk to them.  The VE also works from a Java EMF model of each control,
so this way you'd have getters and setters that, through introspection,
the VE would be able to understand and create properties for.  The
Draw2d approach is another you could use, however I don't think it'd be
a good one.  This would basically involve you having to rewrite your
paint code from your GTK widget inside the GEF figure that the VE used
for its edit part, which would duplicate effort and run the risk of being
incorrect so you didn't get good fidelity between the two, but also would
still require you having to do wrappers from the getters and setters in
Java to your widget through JNI to ensure the property values were correctly
applied, so to get this part done you'd have to have created the SWT wrapper
anyways.

For the code generation look at the
decoders.  These are attached as listeners to the EMF objects and
listen to changes to do the correct code modification.  

Best regards,

Joe

"Sheldon Dsouza" <sheldond@xxxxxxxxx>
Sent by: ve-dev-bounces@xxxxxxxxxxx

11/12/2006 09:15

Please respond to
Discussions people developing code for the Visual Editor project        <ve-dev@xxxxxxxxxxx>

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Subject	[ve-dev] Extending The visual editor

Hi,

            I am currently working on a project
where i have to create a WYSIWYG editor for  GTK+ widgets. I have
gone through the tutorial for the custom widget, and found it useful for
creating my own widgets. But i have the following problem, we have optimized
the GTK+ widgets and have also created our own widgets how can this be
incorporated into eclipse. 

1. Do i have to modify SWT to include these widgets for the look and feel
in the editor (to satisfy the WYSIWYG rule).
2. Or do i create the look and feel of the new widgets using Draw2d.

Secondly i have to generate C code and hence have to disable the java code
generation. Which are the plugins for VE that i have to change or modify
inorder to do this. 

Regards,
Sheldon_______________________________________________
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