QML - screen orientation

johnk

Hello,

I would like to add code to properly react to screen orientation to a QML app for Symbian IFF it can be done in a principled manner. This is some demo code meant to show of QML in a positive light. Since it is a Symbian app, I'll be use QtDeclarativeView. In this case, the "runtime property":http://apidocs.meego.com/qt4.7/qmlruntime.html#screen-orientation doesn't appear to be defined. This shots down "this approach":http://doc.trollteck.com/4.7/declarative-screenorientation.html too because it relies on the runtime property as well.

I understand that the intend is to eventually provide Orientation binding for QML from the Qt Mobility project. Is there a principled way to use it today?

-jk

fcrochik

I haven't tried on symbian but if you generate a "Qt Quick Application" on the qt creator beta 2.1 you will get "orientation" code that seems to also apply to Symbian.

a sneak peek:

@void QmlApplicationViewer::setOrientation(Orientation orientation)
{
#ifdef Q_OS_SYMBIAN
if (orientation != Auto) {
#if defined(ORIENTATIONLOCK)
const CAknAppUiBase::TAppUiOrientation uiOrientation =
(orientation == LockPortrait) ? CAknAppUi::EAppUiOrientationPortrait
: CAknAppUi::EAppUiOrientationLandscape;
CAknAppUi* appUi = dynamic_cast<CAknAppUi*> (CEikonEnv::Static()->AppUi());
TRAPD(error,
if (appUi)
appUi->SetOrientationL(uiOrientation);
);
#else // ORIENTATIONLOCK
qWarning("'ORIENTATIONLOCK' needs to be defined on Symbian when locking the orientation.");
#endif // ORIENTATIONLOCK
}
#elif defined(Q_WS_MAEMO_5)
Qt::WidgetAttribute attribute;
switch (orientation) {
case LockPortrait:
attribute = Qt::WA_Maemo5PortraitOrientation;
break;
case LockLandscape:
attribute = Qt::WA_Maemo5LandscapeOrientation;
break;
case Auto:
default:
attribute = Qt::WA_Maemo5AutoOrientation;
break;
}
setAttribute(attribute, true);
#else // Q_OS_SYMBIAN
Q_UNUSED(orientation);
#endif // Q_OS_SYMBIAN
}@

beardog

[quote author="fcrochik" date="1289270089"]I haven't tried on symbian but if you generate a "Qt Quick Application" on the qt creator beta 2.1 you will get "orientation" code that seems to also apply to Symbian.

a sneak peek:
[/quote]

please can you provide a full example or source file? I use usual Nokia Qt sdk and there is no such option there :(

fcrochik

The application template includes several files that may be useful or not in your case. I suggest you to download the qt-creator beta version 2.1 and try. It will not affect your nokia qt sdk and it is much better to write qml applications

talmage

I have a QML application that needs to know when handset orientation changes. I solved this in QML with "a little hack.":http://developer.qt.nokia.com/wiki/QML_orientation_observer