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Cannot automatically snap to grid! [message #210708]

Sat, 04 March 2006 01:32

Eclipse User

Originally posted by: java.freshman.cx.gmail.com

Hi, all.

Now I have encountered a amazing problem about Grid.
It is know that grid is a new support feature since GEF 3.1.
According to reference, if we want show grid in gef editor and make node
snaped to geid when dragging, all we need to do is set the property
SnapToGrid.PROPERTY_GRID_VISIBLE and SnapToGrid.PROPERTY_GRID_ENABLED of
GroghicalViewer
as true.

Actually, I have done it and grid can be seen in the backgroud, but node in
the editor cannot be snapped to the grid automatically when dragged. Are
there any more code I should added to my editor or any control I should
perform on EditPart and EditPolicy?

I doubt that the problem may be related with my EditPart hierarchy. My
ediparts are like follows:
RootEditPart
--DiagramEditPart
--NodeEditPart(non-dragable)
--SubnodeEditPart(dragable)
Problem occurs when I try to drag SubnodeEditPart in its container
NodeEditPart and into DiagramEditPart. Is it because the DiagramEditPart
whose figure is FreeformLayer is not direct container of SubnodeEditPart?

I am not sure whther I have gave enough detailsot not, but thanks to those
who pay attention to the problem anyway.
Thank you very much!

Re: Cannot automatically snap to grid! [message #210827 is a reply to message #210708]

Mon, 06 March 2006 09:52

Eclipse User

You need to add an adapter in your DiagramEditPart to the SnapToHelper
class.

@see LogicDiagramEditPart#getAdapter(...)

-Steve

"Shawn Chen" <java.freshman.cx@gmail.com> wrote in message
news:dubc9m$k5e$1@eclipse.org...
> Hi, all.
>
> Now I have encountered a amazing problem about Grid.
> It is know that grid is a new support feature since GEF 3.1.
> According to reference, if we want show grid in gef editor and make node
> snaped to geid when dragging, all we need to do is set the property
> SnapToGrid.PROPERTY_GRID_VISIBLE and SnapToGrid.PROPERTY_GRID_ENABLED of
> GroghicalViewer
> as true.
>
> Actually, I have done it and grid can be seen in the backgroud, but node
in
> the editor cannot be snapped to the grid automatically when dragged. Are
> there any more code I should added to my editor or any control I should
> perform on EditPart and EditPolicy?
>
> I doubt that the problem may be related with my EditPart hierarchy. My
> ediparts are like follows:
> RootEditPart
> --DiagramEditPart
> --NodeEditPart(non-dragable)
> --SubnodeEditPart(dragable)
> Problem occurs when I try to drag SubnodeEditPart in its container
> NodeEditPart and into DiagramEditPart. Is it because the DiagramEditPart
> whose figure is FreeformLayer is not direct container of SubnodeEditPart?
>
> I am not sure whther I have gave enough detailsot not, but thanks to those
> who pay attention to the problem anyway.
> Thank you very much!
>
>

Re: Cannot automatically snap to grid! [message #210899 is a reply to message #210827]

Mon, 06 March 2006 17:30

Eclipse User

Originally posted by: harsh.ti.com

Steve,

Thank you so much. I am not sure if you saw my other thread related to
this issue but I have been scratching my head over this for days now.
This was the missing link.

Thank you,
Harsh

Re: Cannot automatically snap to grid! [message #211069 is a reply to message #210827]

Tue, 07 March 2006 22:00

Eclipse User

Originally posted by: java.freshman.cx.gmail.com

To Steve Shaw:

Thank you very much!
I found the solution just like you pointed out yesterday.
Thank you anyway!

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