[Interest] QTouchEvents correctly placed only when the windows is on the primary screen?

[Casimiro, Daniel C CIV NUWC NWPT]

Hi,

Well, the short answer is that qtuiotouch assumes that the touch screen is the primary (only) screen. There are two questions that need answers before I could support your configuration:

1. How to associate the TUIO device with the correct QScreen? (maybe QScreen::name and the TUIO device name)
2. How is QWindowSystemInterface::handleTouchEvent supposed to handle multiple screens?

~Dan

> -----Original Message-----
> From: interest-bounces+daniel.casimiro=navy.mil at qt-project.org [mailto:interest-bounces+daniel.casimiro=navy.mil at qt-
> project.org] On Behalf Of Andrea Franceschini
> Sent: Wednesday, September 25, 2013 12:06 PM
> To: interest at qt-project.org
> Subject: [Interest] QTouchEvents correctly placed only when the windows is on the primary screen?
> 
> Hi there.
> 
> I'm using qtuiotouch but this might be a more general issue I'm not aware of. Basically my set-up is like this:
> 
> - primary screen: regular desktop screen;
> - secondary screen: huge touch screen sending out TUIO messages.
> 
> I set up a small QGraphicsView/Scene example to figure out a few things and then I noticed that I wasn't getting touch events if the
> GV windows wasn't on the primary screen (no matter which one). So I couldn't move the window on the secondary touch screen, go
> to full screen, and do the touch-thing, but if I kept the window on the primary screen (desktop) it would work "as expected", meaning
> that the TUIO messages got perfectly mapped to the GV/Scene.
> 
> Now, a temporary solution would be to make the touch screen my primary screen, which is doable but highly annoying, especially
> since I'm working on a Mac, I might need the menu bar some times, and the touch screen lies horizontal on a table (not exactly visible
> from a sitting position).
> 
> Ideas?
> 
> --
> Andrea Franceschini
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