Debugging a UI refresh problem (not dirtyopts related it seems)

[Richard Bair]

Hi John,

I'm not sure. If you are confident you are running with dirty opts turned off and you're seeing the problem, then it isn't immediately obvious to me what the issue could be. I believe there is a prism.verbose flag or some such which if you set will repeat out all the settings you are currently using, and then you can check that dirty opts is actually being disabled correctly.

Richard


On Jun 12, 2012, at 9:16 PM, John Hendrikx wrote:

> Hi List,
> 
> I'm having a problem that started when I upgraded from JavaFX 2.1 to 2.2b11 -- I want to submit a bug report for it, but having trouble reproducing it outside my main code.
> 
> Basically, what is happening is that during navigation between different parts of the application, sometimes the screen is not being redrawn  properly (for some background info, the screen in my app consists of a screen filling background picture, with on top of this a big list with images/text).
> 
> Basically, what I'm seeing is this:
> 
> Step 1: StackPane with 2 children (background picture, and overlaid on top of that a List with names)
> Step 2: StackPane with same background picture, but no controls over laid... (the background picture is doing a 5 second fade out/in animation because every screen has its own picture, so redrawing is happening a lot)
> 
> Now, if I press cursor up/down, then the list suddenly appears, which makes me think it is a redraw issue (this also means that the control had focus, but is not drawn).
> 
> In between the two steps a lot of code happens in my app, but the crucial part is that at some point the old List is removed (from step 1) and then replaced (in the same StackPane) with a new, different, List.  No exceptions or anything else out of the ordinary happens, the new child is simply not drawn (or perhaps sized incorrectly, rendering it invisible -- or perhaps drawn in the wrong order appearing behind the BG picture (although it is the last child in the StackPane)).  As said, moving the cursor makes it appear -- and it did work with JavaFX 2.1.
> 
> Note that my Lists donot have any kind of "hover" highlighting effects or any other animations (unlike the standard JavaFX lists), so there's a good chance that if JavaFX did not decide to draw my List the first time when it was added to the StackPane that nothing will trigger it to be drawn until the cursor up/down happens...
> 
> Any ideas on how to best debug this?
> 
> I've already tried setting dirtyopts to false... anything else I can try?  It is fairly easy to reproduce in my app.