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Background Image / Limiting Drawing Area [message #230072]

Wed, 31 January 2007 08:28

Mark Hoffmann

Messages: 113
Registered: July 2009
Location: Jena

Senior Member

Hello,
I new in GEF. And I have two questions. I want to draw figures on an
backgroundimage and only there.

1. How can is set a background image. Is it possible? I tried to set it on
the canvas with Control#setBackgroundImage. But it didn't work. The
Background stayed white. I further created a EditPart for my model root.
The corresponding figure is a FreeformFigure and I added a ImageFigure to
it. This works but each child I add to the root is shown behind this image
and not in front of it. So can I even get this figures to the front?

2. In addition to point 1 I want to limit the drawing area to a special
size, no matter if the visible area is larger that my limit. In the area
outside my backgoundimage the should no drawig possible.

Can you help me with this?

Thanx Mark

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Re: Background Image / Limiting Drawing Area [message #230121 is a reply to message #230072]

Wed, 31 January 2007 21:14

Mark Hoffmann

Messages: 113
Registered: July 2009
Location: Jena

Senior Member

Mark Hoffmann schrieb:
> Hello,
> I new in GEF. And I have two questions. I want to draw figures on an
> backgroundimage and only there.
>
> 1. How can is set a background image. Is it possible? I tried to set it
> on the canvas with Control#setBackgroundImage. But it didn't work. The
> Background stayed white. I further created a EditPart for my model root.
> The corresponding figure is a FreeformFigure and I added a ImageFigure
> to it. This works but each child I add to the root is shown behind this
> image and not in front of it. So can I even get this figures to the front?
>
> 2. In addition to point 1 I want to limit the drawing area to a special
> size, no matter if the visible area is larger that my limit. In the area
> outside my backgoundimage the should no drawig possible.
>
> Can you help me with this?
>
> Thanx Mark
>
Found the solution!

I introduced a new printable layer which is not a usual layer. Layers
are extended from Figures. My layer is extended from ImageFigure.

Mark

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