Qt App rotation [solved]

Aline

Hey all,

I have a problem with the rotation off the app I'm building.
I am cross compiling the Qt App for the beagleboard xm, for the rotation I added to the .configure:
-qt-gfx-transformed
and to the App itself:
QWSDisplay::setTransformation(QTransformedScreen:: Rot90, 0);
but when I build I get the error:
error: incomplete type 'QWSDisplay' used in nested name specifier.
(the App without the rotation works fine:))
Can anyone help please?...

SGaist

Hi,

Did you forget to

@#include <QWSDisplay>@

before calling setTransformation ?

Aline

Thank you! :)
now it's compiling with no errors but still doesn't rotate although I launch the app with: ./myapp -qws -display transformed:Rot90
any ideas?...

SGaist

Are you doing the setTransformation and display transformed at the same time ?

Aline

I seemed to forget the '-' before the display... :/
But now when I launch the app i get:
transformd: driver not found
Aborted
I don't know what do you mean by at the same time.. I added the setTransformation to the app code and compiled it and with the result I launch the app with ./myapp -qws -display transformed:Rot90.

SGaist

IIRC its something like

@-qws -display "transformed:rot90:1"@

with the quotes

But I think that doing it in your code and on the command line might result in a screen rotated by 180°

Aline

I tried ./myapp -qws -display "transformed:rot90:1" and still
transformd: driver not found
Aborted
:(
I actually need 180 degrees rotation and not 90 but I'm just trying things out...

SGaist

Did you install your custom compiled Qt on the board ?

Aline

What do you mean? On the bored itself I only installed qt libraries, if I didn't, the app won't work at all, right? It's working but doesn't know the display flag.
Should I install anything else?

SGaist

I mean, are the libraries on the board the same that you use to compile the application ?

Aline

When I compile the application I use the quake that I compiled with the same toolchain as the board and the same gcc. What other libraries?

SGaist

Ok, then the Qt you are using might have not been built with the -gfx-transformed

Aline

How can I add?
I compiled the quake with the .configure with the flag: -qt-gfx-transformed
And the application is using that quake.

SGaist

Did you copy the resulting libs to your beagleboard ?

Aline

No, which libraries should I copy and to where?

SGaist

If you don't have size constraints you can copy the QtEmbedded-4.X.X folder to the same place on the board (you can trim it down later once you have your application up and running)

Aline

I'm sorry, I don't understand... I have the qt-everywhere-opensource-src-4.6.2 directory where I compiled the qmake. and all the outputs are located in an out directory I chose.
In the out directory are subdirectories:
bin demos examples include lib mkspecs plugins translations
and in bin there is the qmake Im using in the Qt creator.
what should I copy and where to?

SGaist

Copy the lib and plugins content on your target filesystem. Generally I let Qt install the files in the default location which is /usr/local/Trolltech/QtEmbedded-4.X.X so on the target I copy the files in the same dir.

Aline

Oh my god! I used generic Qt libraries for the beagleboard and not the ones I compiled...
Thank You SO MUCH!!!!!! It's working!

Aline

Can I ask you another question about screen rotation?
I tried to rotate the screen with:
echo 1 > /sys/class/graphics/fbcon/rotate
and the frame buffer is rotating but when i launch the Qt app it doesn't rotate...
Do you know if it's possible to rotate it that way as well?.. :)

Again, Thank you! :)