[Interest] Running as nobody, generating images

[Andreas Pakulat]

On 09.02.12 10:14:59, Harri Pasanen wrote:
> Picking your collective brain here...
> 
> I'm trying to do some batch style image processing with a Qt app, using 
> QImage.
> As QCoreApplication / console everything compiled, but silently failed 
> at runtime.
> 
> As QApplication with a MainWindow things started to work but looks like 
> a display is required.
> I tried to set a timer to run my app on N9 using dbus/timed, and while 
> the application starts,
> it seems to be always running as nobody:nogroup and thus fails, probably 
> as it cannot get
> hold of the display.  The timed docs say that it should run as user,
> using Maemo::Timed::Event::Action::runCommand, but that does not seem to 
> be the case.
> 
> I've thought about porting libgd, or using python-imaging, but these are 
> almost overkill for me.
> The only thing I'd really need is open png, drawPixmap(x,y) on it, save png.

Sounds like you're using QPixmap, that one is a native GUI pixmap and
hence requires a GUI application that connects to whatever draws the GUI
on your device (X11 on Linux). If you just want to paint something on a
png, simply use QImage only and then you can go back to
QCoreApplication.

Andreas