| Dirty Regions [message #219721] |
Thu, 20 July 2006 23:43  |
Eclipse User |
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Originally posted by: irbull.cs.uvic.ca
I have a question about Dirty Regions (and it is probably just my lack
of understanding). Assume I had a grid of 10 x 10 figures (with no
connections between them). If I selected the bottom figure and moved it
slightly, I would assume that no other figures would be repainted
(unless I dragged this figure over them). Is this true?
GEF seems to have a notion of dirty regions(which I assume this is).
However, even if I take something as simple as the ShapesExample. If I
move one shape, the SWT GC is getting called to repaint all the other
ones. Is this the way it is supposed to work, or have I just not set
something up correctly.
I am using GTK+ and Eclipse 3.2 (GEF from Head).
Cheers,
Ian
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| Re: Dirty Regions [message #219827 is a reply to message #219721] |
Fri, 21 July 2006 20:41  |
| Eclipse User |
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Originally posted by: none.us.ibm.com
There is a workaround in draw2d that forces us to paint the entire canvas on
GTK. This was removed in 3.2 I believe.
"Ian Bull" <irbull@cs.uvic.ca> wrote in message
news:e9p4gh$sfe$1@utils.eclipse.org...
>I have a question about Dirty Regions (and it is probably just my lack of
>understanding). Assume I had a grid of 10 x 10 figures (with no connections
>between them). If I selected the bottom figure and moved it slightly, I
>would assume that no other figures would be repainted (unless I dragged
>this figure over them). Is this true?
>
> GEF seems to have a notion of dirty regions(which I assume this is).
> However, even if I take something as simple as the ShapesExample. If I
> move one shape, the SWT GC is getting called to repaint all the other
> ones. Is this the way it is supposed to work, or have I just not set
> something up correctly.
>
> I am using GTK+ and Eclipse 3.2 (GEF from Head).
>
> Cheers,
> Ian
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| Re: Dirty Regions [message #219835 is a reply to message #219827] |
Fri, 21 July 2006 20:54 |
| Eclipse User |
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Originally posted by: irbull.cs.uvic.ca
So does this mean that GEF should not be painting the entire screen now?
It still seems to be doing this in the GEF from head.
Actually, the OS is properly clipping and only rendering proper bounds,
but GEF seems to be sending draw events to the GC for everything. This
means that all text processing still occurs which is very slow on Linux
(Eclipse bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=51693).
cheers,
ian
Randy Hudson wrote:
> There is a workaround in draw2d that forces us to paint the entire canvas on
> GTK. This was removed in 3.2 I believe.
>
> "Ian Bull" <irbull@cs.uvic.ca> wrote in message
> news:e9p4gh$sfe$1@utils.eclipse.org...
>> I have a question about Dirty Regions (and it is probably just my lack of
>> understanding). Assume I had a grid of 10 x 10 figures (with no connections
>> between them). If I selected the bottom figure and moved it slightly, I
>> would assume that no other figures would be repainted (unless I dragged
>> this figure over them). Is this true?
>>
>> GEF seems to have a notion of dirty regions(which I assume this is).
>> However, even if I take something as simple as the ShapesExample. If I
>> move one shape, the SWT GC is getting called to repaint all the other
>> ones. Is this the way it is supposed to work, or have I just not set
>> something up correctly.
>>
>> I am using GTK+ and Eclipse 3.2 (GEF from Head).
>>
>> Cheers,
>> Ian
>
>
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