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Home » Eclipse Projects » GEF » Drawing connections underneath boxes
Drawing connections underneath boxes [message #229049] Mon, 15 January 2007 11:02 Go to next message
Eclipse UserFriend
Originally posted by: benno.luthiger.id.ethz.ch

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Dear list members

I have a model I want to visualize with boxes in concentric circles =
around a central box. These boxes are connected with straight lines with =
the central box.=20
I derive the root edit part I use from FreeformGraphicalRootEditPart.
When my model is displayed, all is shown nicely except that the =
connections are drawn over the boxes (see att. 1).


Overriding the FreeformGraphicalRootEditPart#createPrintableLayers as =
follows:
FreeformLayeredPane layeredPane =3D new FreeformLayeredPane();=20
layeredPane.add(new ConnectionLayer(), CONNECTION_LAYER);=20
layeredPane.add(new FreeformLayer(), PRIMARY_LAYER);=20
return layeredPane;=20

doesn't help. Now, I don't see the connections at all (see att. 2).


What do I have to do to make the connections visible in the background?

Regards,
Benno

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<STYLE></STYLE>
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Dear list members</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I have a model I want to visualize with =
boxes in=20
concentric circles around a central box. These boxes are connected with =
straight=20
lines with the central box. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I derive the root edit part I use from=20
FreeformGraphicalRootEditPart.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>When my model is displayed, all is =
shown nicely=20
except that the connections are drawn over the boxes (see att. =
1).</FONT></DIV>
<DIV><IMG alt=3D"" hspace=3D0 =
src=3D"cid:008501c73894$b77d83c0$2c531eac@openelbe"=20
align=3Dbaseline border=3D0></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT><FONT face=3DArial =
size=3D2>Overriding=20
the&nbsp;<FONT face=3D"Courier New"=20
size=3D2>FreeformGraphicalRootEditPart</FONT><FONT face=3Dsans-serif=20
size=3D2>#</FONT><FONT face=3D"Courier New" =
size=3D2>createPrintableLayers<FONT=20
face=3DArial> as follows:</FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial>
<P align=3Dleft><FONT face=3D"Courier New"=20
size=3D2> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; FreeformLayeredPane=20
layeredPane =3D <FONT face=3D"Courier New" color=3D#820040=20
size=3D2><B>new</B></FONT><FONT face=3D"Courier New" size=3D2>=20
FreeformLayeredPane();</FONT><FONT size=3D3> <BR></FONT><FONT =
face=3D"Courier New"=20
size=3D2>&nbsp; &nbsp; &nbsp; &nbsp; layeredPane.add(</FONT><FONT=20
face=3D"Courier New" color=3D#820040 size=3D2><B>new</B></FONT><FONT=20
face=3D"Courier New" size=3D2> ConnectionLayer(), </FONT><FONT =
face=3D"Courier New"=20
color=3D#0021bf size=3D2><I>CONNECTION_LAYER</I></FONT><FONT =
face=3D"Courier New"=20
size=3D2>);</FONT><FONT size=3D3> <BR></FONT><FONT face=3D"Courier New" =
size=3D2>&nbsp;=20
&nbsp; &nbsp; &nbsp; layeredPane.add(</FONT><FONT face=3D"Courier New"=20
color=3D#820040 size=3D2><B>new</B></FONT><FONT face=3D"Courier New" =
size=3D2>=20
FreeformLayer(), </FONT><FONT face=3D"Courier New" color=3D#0021bf=20
size=3D2><I>PRIMARY_LAYER</I></FONT><FONT face=3D"Courier New" =
size=3D2>);</FONT><FONT=20
size=3D3> <BR></FONT><FONT face=3D"Courier New" size=3D2>&nbsp; &nbsp; =
&nbsp; &nbsp;=20
</FONT><FONT face=3D"Courier New" color=3D#820040 =
size=3D2><B>return</B></FONT><FONT=20
face=3D"Courier New" size=3D2> layeredPane;</FONT><FONT size=3D3>=20
</FONT></FONT></P></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>doesn't help. Now, I don't see the =
connections at=20
all (see att. 2).</FONT></DIV>
<DIV><IMG alt=3D"" hspace=3D0 =
src=3D"cid:008601c73894$b77d83c0$2c531eac@openelbe"=20
align=3Dbaseline border=3D0></DIV>
<DIV><FONT face=3DArial size=3D2></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>What do I have to do to make the =
connections=20
visible in the background?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial =
size=3D2>Regards,<BR>Benno<BR></FONT></DIV></BODY></HTML >

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Re: Drawing connections underneath boxes [message #229073 is a reply to message #229049] Mon, 15 January 2007 20:10 Go to previous messageGo to next message
Anthony Hunter is currently offline Anthony HunterFriend
Messages: 446
Registered: July 2009
Senior Member
This is a multi-part message in MIME format.

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Hi Luthiger

The connection layer is always the top layer. This is by design in GEF =
to ensure that connections are always observed in their entirety and =
that when shapes overlap they don't appear to be connected to the =
intersected shape.

The is shown in you example below, if the Blue Square Open Source =
connection is hidden below the second Green Circle Open Source, it would =
look like it was connected to Open Source and not AAA.

Cheers...
Anthony
"Luthiger" <benno.luthiger@id.ethz.ch> wrote in message =
news:eofn1c$4h1$2@utils.eclipse.org...
Dear list members

I have a model I want to visualize with boxes in concentric circles =
around a central box. These boxes are connected with straight lines with =
the central box.=20
I derive the root edit part I use from FreeformGraphicalRootEditPart.
When my model is displayed, all is shown nicely except that the =
connections are drawn over the boxes (see att. 1).


Overriding the FreeformGraphicalRootEditPart#createPrintableLayers as =
follows:
FreeformLayeredPane layeredPane =3D new FreeformLayeredPane(); =

layeredPane.add(new ConnectionLayer(), CONNECTION_LAYER);=20
layeredPane.add(new FreeformLayer(), PRIMARY_LAYER);=20
return layeredPane;=20

doesn't help. Now, I don't see the connections at all (see att. 2).


What do I have to do to make the connections visible in the =
background?

Regards,
Benno

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2900.3020" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi Luthiger</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The connection layer is always the top =
layer.=20
</FONT><FONT face=3DArial size=3D2>This is by design in GEF to ensure =
that=20
connections are always observed in their entirety and that when shapes =
overlap=20
they don't appear to be connected to the intersected shape.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The is shown in you example below, if =
the Blue=20
Square Open Source connection is hidden below the second Green Circle =
Open=20
Source, it would look like it was connected to Open Source and not=20
AAA.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Cheers...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Anthony</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV>"Luthiger" &lt;<A=20
=
href=3D"mailto:benno.luthiger@id.ethz.ch">benno.luthiger@id.ethz.ch</A>&g=
t;=20
wrote in message <A=20
=
href=3D"news:eofn1c$4h1$2@utils.eclipse.org">news:eofn1c$4h1$2@utils.ecli=
pse.org</A>...</DIV>
<DIV><FONT face=3DArial size=3D2>Dear list members</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I have a model I want to visualize =
with boxes in=20
concentric circles around a central box. These boxes are connected =
with=20
straight lines with the central box. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I derive the root edit part I use =
from=20
FreeformGraphicalRootEditPart.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>When my model is displayed, all is =
shown nicely=20
except that the connections are drawn over the boxes (see att.=20
1).</FONT></DIV>
<DIV><IMG alt=3D"" hspace=3D0=20
src=3D"cid:014401c738e1$338db330$6401a8c0@rationalnt.ibm.com" =
align=3Dbaseline=20
border=3D0></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT><FONT face=3DArial =
size=3D2>Overriding=20
the&nbsp;<FONT face=3D"Courier New"=20
size=3D2>FreeformGraphicalRootEditPart</FONT><FONT face=3Dsans-serif=20
size=3D2>#</FONT><FONT face=3D"Courier New" =
size=3D2>createPrintableLayers<FONT=20
face=3DArial> as follows:</FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial>
<P align=3Dleft><FONT face=3D"Courier New"=20
size=3D2> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; =
FreeformLayeredPane=20
layeredPane =3D <FONT face=3D"Courier New" color=3D#820040=20
size=3D2><B>new</B></FONT><FONT face=3D"Courier New" size=3D2>=20
FreeformLayeredPane();</FONT><FONT size=3D3> <BR></FONT><FONT =
face=3D"Courier New"=20
size=3D2>&nbsp; &nbsp; &nbsp; &nbsp; layeredPane.add(</FONT><FONT=20
face=3D"Courier New" color=3D#820040 size=3D2><B>new</B></FONT><FONT=20
face=3D"Courier New" size=3D2> ConnectionLayer(), </FONT><FONT =
face=3D"Courier New"=20
color=3D#0021bf size=3D2><I>CONNECTION_LAYER</I></FONT><FONT =
face=3D"Courier New"=20
size=3D2>);</FONT><FONT size=3D3> <BR></FONT><FONT face=3D"Courier =
New"=20
size=3D2>&nbsp; &nbsp; &nbsp; &nbsp; layeredPane.add(</FONT><FONT=20
face=3D"Courier New" color=3D#820040 size=3D2><B>new</B></FONT><FONT=20
face=3D"Courier New" size=3D2> FreeformLayer(), </FONT><FONT =
face=3D"Courier New"=20
color=3D#0021bf size=3D2><I>PRIMARY_LAYER</I></FONT><FONT =
face=3D"Courier New"=20
size=3D2>);</FONT><FONT size=3D3> <BR></FONT><FONT face=3D"Courier =
New"=20
size=3D2>&nbsp; &nbsp; &nbsp; &nbsp; </FONT><FONT face=3D"Courier New" =

color=3D#820040 size=3D2><B>return</B></FONT><FONT face=3D"Courier =
New" size=3D2>=20
layeredPane;</FONT><FONT size=3D3> </FONT></FONT></P></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>doesn't help. Now, I don't see the =
connections at=20
all (see att. 2).</FONT></DIV>
<DIV><IMG alt=3D"" hspace=3D0=20
src=3D"cid:014501c738e1$338db330$6401a8c0@rationalnt.ibm.com" =
align=3Dbaseline=20
border=3D0></DIV>
<DIV><FONT face=3DArial size=3D2></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>What do I have to do to make the =
connections=20
visible in the background?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial=20
size=3D2>Regards,<BR>Benno<BR></FONT></DIV></BLOCKQUOTE ></BODY></HTML>

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Re: Drawing connections underneath boxes [message #229141 is a reply to message #229073] Tue, 16 January 2007 16:18 Go to previous messageGo to next message
Eclipse UserFriend
Originally posted by: benno.luthiger.id.ethz.ch

This is a multi-part message in MIME format.

------=_NextPart_000_0009_01C73992.5BB0F280
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Dear Anthony

Thanks for your explanations. That make sense, although, in my case, =
it's a pity.

What I still don't understand is that I saw some hints that it's =
possible to draw connections in the backgound, i.e. by reordering the =
layers. When this is possible in principle (according to threads posted =
on 2006/06/20 and 2006/11/6 respectively), why not in my case?

Regards,
Benno

"Anthony Hunter" <anthonyh@ca.ibm.com> wrote in message =
news:eogn3l$jn9$1@utils.eclipse.org...
Hi Luthiger

The connection layer is always the top layer. This is by design in GEF =
to ensure that connections are always observed in their entirety and =
that when shapes overlap they don't appear to be connected to the =
intersected shape.

The is shown in you example below, if the Blue Square Open Source =
connection is hidden below the second Green Circle Open Source, it would =
look like it was connected to Open Source and not AAA.

Cheers...
Anthony

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charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.5730.11" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Dear Anthony</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks for your explanations. That make =
sense,=20
although, in my case, it's a pity.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>What I still don't understand is that I =
saw some=20
hints that it's possible to draw connections in the backgound, i.e. by=20
reordering the layers. When this is possible in principle (according to =
threads=20
posted on 2006/06/20 and 2006/11/6 respectively), why not in my=20
case?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Regards,<BR>Benno<BR></FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV>"Anthony Hunter" &lt;<A=20
href=3D"mailto:anthonyh@ca.ibm.com">anthonyh@ca.ibm.com</A>&gt; wrote =
in message=20
<A=20
=
href=3D"news:eogn3l$jn9$1@utils.eclipse.org">news:eogn3l$jn9$1@utils.ecli=
pse.org</A>...</DIV>
<DIV><FONT face=3DArial size=3D2>Hi Luthiger</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The connection layer is always the =
top layer.=20
</FONT><FONT face=3DArial size=3D2>This is by design in GEF to ensure =
that=20
connections are always observed in their entirety and that when shapes =
overlap=20
they don't appear to be connected to the intersected =
shape.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The is shown in you example below, if =
the Blue=20
Square Open Source connection is hidden below the second Green Circle =
Open=20
Source, it would look like it was connected to Open Source and not=20
AAA.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Cheers...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Anthony</FONT></DIV>
<DIV>&nbsp;</DIV></BLOCKQUOTE></BODY></HTML>

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Re: Drawing connections underneath boxes [message #229427 is a reply to message #229141] Fri, 19 January 2007 13:23 Go to previous messageGo to next message
Nhu Le is currently offline Nhu LeFriend
Messages: 47
Registered: July 2009
Member
I think the "diagram" figure, since it's not transparent, will hide
everything underneath it. If you can make that transparent, the
connections should show through.

Nhu

Luthiger wrote:
> Dear Anthony
>
> Thanks for your explanations. That make sense, although, in my case,
> it's a pity.
>
> What I still don't understand is that I saw some hints that it's
> possible to draw connections in the backgound, i.e. by reordering the
> layers. When this is possible in principle (according to threads posted
> on 2006/06/20 and 2006/11/6 respectively), why not in my case?
>
> Regards,
> Benno
>
> "Anthony Hunter" <anthonyh@ca.ibm.com <mailto:anthonyh@ca.ibm.com>>
> wrote in message news:eogn3l$jn9$1@utils.eclipse.org...
> Hi Luthiger
>
> The connection layer is always the top layer. This is by design in
> GEF to ensure that connections are always observed in their entirety
> and that when shapes overlap they don't appear to be connected to
> the intersected shape.
>
> The is shown in you example below, if the Blue Square Open Source
> connection is hidden below the second Green Circle Open Source, it
> would look like it was connected to Open Source and not AAA.
>
> Cheers...
> Anthony
>
Re: Drawing connections underneath boxes [message #229618 is a reply to message #229141] Mon, 22 January 2007 16:03 Go to previous messageGo to next message
Eclipse UserFriend
Originally posted by: benno.luthiger.id.ethz.ch

I forward mmostafa's hint:
--------------------------

Hi Luthiger;
Sending the connections to the background can be done; all what you need is
to change the order you added the layers
by default the FreeformGraphicalRootRootEditPart will make the connection
layer above the free form layer. you will need to override the
CreatePrintableLayers method in your root edit part and do this
layeredPane.add(new ConnectionLayer(), ... );
layeredPane.add(new FreeFormaLayer(), ..);
this means that the FreeForma Layer will have a higher Z-order than the
connection layer, as a result the connection layer will be displayed in the
background

if you have access to the GMF Examples, i can tell you which line you need
to change to get the GMF logic example behaving the way you want.
One point to consider, lets say you always create an edit part that covers
the whole diagram area then this edit part will contains the diagram shapes,
if this edit part's figure is not transparent then it will hide all
connections. If this is your case then make sure that you make this edit
part's figure transparent.

I hope this helps
Mohammed Mostafa
Re: Drawing connections underneath boxes [message #229627 is a reply to message #229427] Mon, 22 January 2007 16:04 Go to previous message
Eclipse UserFriend
Originally posted by: benno.luthiger.id.ethz.ch

The hint concerning edit parts/figures covering the whole diagram area not
being transparent turned out to be crucial.

Afters identifying such an edit part and setting its figure
IFigure.setOpaque(false), everything was displayed as expected.


Thanks a lot

Benno Luthiger

"Nhu Le" <nle.misc@gmail.com> wrote in message
news:eoqgnv$vqr$1@utils.eclipse.org...
>I think the "diagram" figure, since it's not transparent, will hide
>everything underneath it. If you can make that transparent, the
>connections should show through.
>
> Nhu
>
> Luthiger wrote:
>> Dear Anthony
>> Thanks for your explanations. That make sense, although, in my case,
>> it's a pity.
>> What I still don't understand is that I saw some hints that it's
>> possible to draw connections in the backgound, i.e. by reordering the
>> layers. When this is possible in principle (according to threads posted
>> on 2006/06/20 and 2006/11/6 respectively), why not in my case?
>> Regards,
>> Benno
>>
>> "Anthony Hunter" <anthonyh@ca.ibm.com <mailto:anthonyh@ca.ibm.com>>
>> wrote in message news:eogn3l$jn9$1@utils.eclipse.org...
>> Hi Luthiger
>> The connection layer is always the top layer. This is by design in
>> GEF to ensure that connections are always observed in their entirety
>> and that when shapes overlap they don't appear to be connected to
>> the intersected shape.
>> The is shown in you example below, if the Blue Square Open Source
>> connection is hidden below the second Green Circle Open Source, it
>> would look like it was connected to Open Source and not AAA.
>> Cheers...
>> Anthony
>>
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