| Get connections to be drawed behind nodes [message #161891] |
Fri, 17 December 2004 10:54  |
Eclipse User |
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Originally posted by: filzmail.gmail.com
Hi,
I am laying out a graph in GEF using a custom LayoutManager which calls
DirectedGraphLayout().visit(graph), as described here:
http://www.eclipse.org/articles/Article-GEF-editor/gef-schem a-editor.html
The graph consists of several nodes and connections between some of
them. The DirectedGraphLayout does not route the connections around
existing nodes and IT SHOULD STAY THAT WAY, but this means a connection
may go from its source "through" another (third) node to reach its target.
Right now the connections are drawed IN FRONT OF the existing nodes, but
I'd like them to be drawed BEHIND them.
I am not really sure where to look for to change that behaviour, the
whole connection drawing stuff seems like magic to me. I checked other
threads in this group but I didn't understand them.
Can someone give me some pointers as to how to change the ordering of
the drawing routines?
Thanks!
Phil
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| Re: Get connections to be drawed behind nodes [message #161967 is a reply to message #161891] |
Fri, 17 December 2004 17:16  |
| Eclipse User |
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Originally posted by: none.us.ibm.com
"Phil" <filzmail@gmail.com> wrote in message
news:cpudso$idq$1@www.eclipse.org...
> Hi,
>
> I am laying out a graph in GEF using a custom LayoutManager which calls
> DirectedGraphLayout().visit(graph), as described here:
>
> http://www.eclipse.org/articles/Article-GEF-editor/gef-schem a-editor.html
>
> The graph consists of several nodes and connections between some of
> them. The DirectedGraphLayout does not route the connections around
> existing nodes and IT SHOULD STAY THAT WAY, but this means a connection
> may go from its source "through" another (third) node to reach its target.
What do you mean, virtual nodes are inserted to route edges among existing
nodes. Maybe you application isn't doing anything with those "bendpoints"
which directed graph layout is inserting.
> Right now the connections are drawed IN FRONT OF the existing nodes, but
> I'd like them to be drawed BEHIND them.
>
> I am not really sure where to look for to change that behaviour, the
> whole connection drawing stuff seems like magic to me. I checked other
> threads in this group but I didn't understand them.
Look at the root editpart which creates the connection and primary layers.
>
> Can someone give me some pointers as to how to change the ordering of
> the drawing routines?
>
> Thanks!
>
> Phil
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| Re: Get connections to be drawed behind nodes [message #162092 is a reply to message #161967] |
Sun, 19 December 2004 15:24 |
| Eclipse User |
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Originally posted by: filzmail.gmail.com
Randy Hudson wrote:
> What do you mean, virtual nodes are inserted to route edges among
existing
> nodes. Maybe you application isn't doing anything with those "bendpoints"
> which directed graph layout is inserting.
You are right... I forgot about them bendpoints. :( Thanks!
> Look at the root editpart which creates the connection and primary layers.
I will. Thanks!
Phil
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