Qtopia-core look consistency

[Nicola Mfb]

> [...]
> So there is a problem in qtopia/arm or i'm missing again somethink. This is
> the reason why i asked you how should i do to have consistency beetween the
> two SDK (arm - x86). Howewer i installed my built /opt/Qtopia on the
> Freerunner to be sure i used the same toolkit, but the problems are the
> same.
>

Hi Lorn! after a two day headache i finally found the problem. In Qtopiacore
for arm qreal is a float while in i686fb qreal is double.
I defined qreal as a float on i686 and recompiled it, and now i have the
same paint horror on the desktop :)
The following is a snippet that you can use to show how is simple to break a
QPainterPath rendering in a QGraphicsScene/QGraphicsView:

#include <QtopiaApplication>
#include <QGraphicsView>
#include <QGraphicsScene>
#include <QGraphicsPathItem>

int main ( int argc, char *argv[] )
{
    qDebug ( "sizeof qreal is %d",sizeof ( qreal ) );

    QtopiaApplication app ( argc, argv );
    QGraphicsScene *qgs = new QGraphicsScene;
    QGraphicsView *qgv = new QGraphicsView ( qgs );
    qgv->showMaximized();

    QPainterPath *qpp = new QPainterPath;

    qpp->moveTo ( 18164355,12559962 );
    qpp->lineTo ( 18164319,12560006 );
    qpp->lineTo ( 18164273,12560058 );
    qpp->lineTo ( 18164262,12560068 );
    qpp->lineTo ( 18164253,12560074 );
    qpp->lineTo ( 18164242,12560080 );
    qpp->lineTo ( 18164232,12560085 );
    qpp->lineTo ( 18164222,12560093 );
    qpp->lineTo ( 18164221,12560106 );
    qpp->lineTo ( 18164224,12560112 );
    qpp->lineTo ( 18164231,12560113 );
    qpp->lineTo ( 18164239,12560112 );

    QGraphicsPathItem *p=new QGraphicsPathItem ( *qpp );
    QPen pen ( Qt::white );
    //pen.setWidthF(1.0); //UNCOMMENTING THIS BREAKS PAINTING
    p->setPen ( pen );
    qgs->addItem ( p );

    QRect r ( 18164355-qgv->width() /2,12559962-qgv->height()
/2,qgv->width(),qgv->height() );
    qgv->setSceneRect ( r );

    return app.exec();
}

Run it twice toggling the pen.setWidthF line comment and you'll se wath i'm
saying.

Hoping this may help, i'd like to follow/contribute to further investigation
on a bug tracking system, is there one for qtopia?

Regards

     Nicola
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.openmoko.org/pipermail/community/attachments/20080913/a3ff9454/attachment.htm