Update UI in high rate

Lior

Hi
I want to build some app that receives data at a high rate and shows the data in real time.

The main problem is if the main ui is get interprets in high rate it not responsive.

The only solution I can think of is to collect several frames and update the ui in chunks.

Can some one suggest onthoer aprroch?

Can I set some rule to frame/widgets that it not suppose to be interactive and view only?

SGaist

Hi,

What are you using to show your data ?

JoeCFD

check how video widget works. Frame rate can be over 30/s. If yours is much higher, you may need to come up with some cache mechanism.

Lior

@SGaist
I didn't start yet, but for practicing QML.

SimonSchroeder

Well, I haven't used QML yet, but always QWidgets. However, here is what I've learned so far: If you have lots of data (which is what I expect if you say you have data coming in constantly), you should not create a graphical representation for all data. Within QWidgets you would have a model and the view will create the graphical elements for the parts that are currently visible. I am not sure though, how this translates to QML or if it is even possible to have the data separate from the view.