[Qt-qml] QML on latest N900 PR1.2 vs QML in 4.7

[Alan Alpert]

 Onsdag 2. juni 2010 21:01:55 skrev ext Ivan De Marino :

> Problem is that I'm a bit stuck now: the latest version of my project works
> without any problem (aside from the bugs I didn't discover yet :P), while
> on N900 the behaviour is always a bit "flaky". With realease 2010-05-20 of
> the packages of "libqt4-experimental" for N900 1.2, I now lost
> SCROLLING/PANNING And I can't make my head around on what is the actual
> problem. I just use a Flickable element with a WebView inside: don't see
> what can go wrong, and only on N900. The QML part of my project here:
> http://github.com/OrangeLabsUK/OrangeMobileBrowser/tree/master/orangemobil
> ebrowser-1.0/src/qmls/ .

The webbrowser demo is working just fine on my n900. You might want to have a 
look at the differences between your FlickableWebView and the one in 
demos/declarative/webbrowser.  This demo has had a bunch of minor changes 
recently, so you should have another look even if you've seen it before.

I don't think any of those changes relate to this specific problem, but I could 
be wrong. And the recent webbrowser demo pans just fine on my N900 with those 
packages installed.

> 
> Plus, I can't use OpenGL in my GraphicsView because... no idea! It's slow,
> painfully slow. I get much better performance if I "#ifdef" it out.

With the PR1.2 packages this is a known issue, and is caused by a bug 
involving clipping. The next set of Qt 4.7 packages should hopefully resolve 
it. Until then keep trying without using OpenGL.

-- 
Alan Alpert
Software Engineer
Nokia, Qt Development Frameworks