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is it possible to create SWT controls offscreen and scrape their graphics? [message #153315]

Thu, 07 October 2004 16:05

Sean Neeley

Messages: 22
Registered: July 2009

Junior Member

How do you do it?

I'm designing a SWT user interface builder using GEF. My original
approach was to create the SWT control over the top of a lightweight
IFigure of the same size and position, scrape the graphics, then destroy
the SWT control, then paint the IFigure with the image of the SWT
control. The only problem is, if half of the SWT widget is offscreen
when I scrape the graphics, I end up with garbage on the half of the
image where the widget was offscreen. Is there a way to completely
create the SWT widget offscreen somewhere and then scrape the graphics?
I've seen several posts eluding to this, but I've been unable to
figure out how to do it.

Thank you.
- Sean

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Re: is it possible to create SWT controls offscreen and scrape their graphics? [message #153331 is a reply to message #153315]

Thu, 07 October 2004 18:39

Pratik Shah

Messages: 1077
Registered: July 2009

Senior Member

Try the eclipse.platform.swt and/or the eclipse.tools.ve newsgroups.

"Sean Neeley" <sean.neeley@dbcsoftware.com> wrote in message
news:ck3p94$8v3$1@eclipse.org...
> How do you do it?
>
> I'm designing a SWT user interface builder using GEF. My original
> approach was to create the SWT control over the top of a lightweight
> IFigure of the same size and position, scrape the graphics, then destroy
> the SWT control, then paint the IFigure with the image of the SWT
> control. The only problem is, if half of the SWT widget is offscreen
> when I scrape the graphics, I end up with garbage on the half of the
> image where the widget was offscreen. Is there a way to completely
> create the SWT widget offscreen somewhere and then scrape the graphics?
> I've seen several posts eluding to this, but I've been unable to
> figure out how to do it.
>
> Thank you.
> - Sean

Report message to a moderator

Re: is it possible to create SWT controls offscreen and scrape their graphics? [message #153354 is a reply to message #153315]

Fri, 08 October 2004 15:26

Eclipse User

Originally posted by: none.us.ibm.com

Why not reuse the VE? It includes an SWT builder using GEF, and it is
extensible AFAIK.

Offscreen scraping only works on some platforms. Others are optimized to
not paint widgets which cannot be seen.

"Sean Neeley" <sean.neeley@dbcsoftware.com> wrote in message
news:ck3p94$8v3$1@eclipse.org...
> How do you do it?
>
> I'm designing a SWT user interface builder using GEF. My original
> approach was to create the SWT control over the top of a lightweight
> IFigure of the same size and position, scrape the graphics, then destroy
> the SWT control, then paint the IFigure with the image of the SWT
> control. The only problem is, if half of the SWT widget is offscreen
> when I scrape the graphics, I end up with garbage on the half of the
> image where the widget was offscreen. Is there a way to completely
> create the SWT widget offscreen somewhere and then scrape the graphics?
> I've seen several posts eluding to this, but I've been unable to
> figure out how to do it.
>
> Thank you.
> - Sean

Report message to a moderator

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