Re: Multiple JFXPanel?

[Anton V. Tarasov]

Hi Pedro,

On 05.08.2013 2:13, Pedro Duque Vieira wrote:
Hi Anton,
Thanks for your reply.

Actually I wasn't clear enough when I explained my app.
My app is composed of a MDI style interface but each window belongs to the same JFrame, so there 
is only one JFrame but multiple internal frames. One of these internal frames has a JFXPanel with 
a scene in it. I intend to migrate the rest of the internal frames to javafx one by one using this 
approach.

Sorry, I didn't get it.


My question was is this a viable way to do this? Or am I going to pay a performance penalty from 
having multiple JFXPanels (hence multiple scenes) inside the same app (the same JFrame)?

Actually, it doesn't matter for an embedded scene where you embed it, to a separate frame or to an 
internal one. In both the cases the embedded scene will have the same machinery behind.
Just for curiosity, I've modified my testcase to be MDI like and got the same 
performance scores.

So, your case should not bring any additional performance decrease, except for the difference b/w 
your fx & swing implementations which may depend.

Thanks,
Anton.


From what people have told me in this mailing list, they are using multiple JFXPanels without any 
significant performance penalty, anyway it would be interesting hearing the opinion from you, 
JavaFX dev team guys.

Thanks once again for your replies, best regards,

On Fri, Aug 2, 2013 at 8:55 AM, Anton V. Tarasov <anton.tara...@oracle.com 
<mailto:anton.tara...@oracle.com>> wrote:

    Hi Pedro,

    I've made the following experiment. I've created two simple test cases: one 
is pure fx stage
    showing WebView which animated some guimark2 benchmarks, another one is the 
same WebView
    wrapped with JFXPanel put in JFrame.

    I ran each test case with a single, two or four toplevels (Stages or 
JFrames, appropriately)
    and measured performance difference. I noticed that for the swing test 
case, adding more
    toplevels decreased performance with the same proportion like the fx test 
case did (despite
    the fact that fx performed relatively faster, of course). For instance, for 
the Vector
    Charting Test the ratio was directly proportional to the number of 
toplevels, that is doubling
    the toplevels decreased performance by two times equally for both fx and 
swing cases.

    This more or less proves the fact that adding another embedded scene into 
your app doesn't
    bring anything except another scene.

    Thanks,
    Anton.


    On 01.08.2013 2:45, Pedro Duque Vieira wrote:

        Hi,

        I have a doubt. I have a swing app with embed javafx scene. My app has 
kind
        of a MDI style interface. Right now only one window has been converted 
to
        JavaFX, basically it's a window with a JFXPanel in it.
        My question is if I want to convert the other windows as well should I 
also
        put a JFXPanel in them? I would than have 2 JFXPanels in my app, does 
that
        mean I would have 2 JavaFX scenes? Is that the way to do it? Would that
        seriously hurt performance?

        Thank you in advance, best regards,





--
Pedro Duque Vieira