On Oct 11, 2012, at 9:36 AM, Samuel Rødal <[email protected]> wrote:
> On 10/11/2012 08:23 AM, Ziller Eike wrote: >> >> On 10.10.2012, at 16:56, Olivier Goffart wrote: >> >> If you'd now be able to change the unit in Qt to "pixel metrics" for >> certain widgets (and optionally sub widgets) where you really want to >> take advantage of each and every pixel in e.g. painting code, then every >> case would be covered. (And you could decide to do what you suggest.) > > Agreed, it definitely needs to be possible to turn off the 2x2 scaling > for widgets that _do_ care about individual device pixels. How about: QPainter p(this); qreal scaleFactor = this->windowHandle()->dpiScaleFactor(); p.scale(1.0 / scaleFactor, 1.0 / scaleFactor); QRect pxelRect(QPoint(0, 0), this->size() * scaleFactor); // paint within pxelRect A bit cumbersome, but it is a special case. Also, we need to make sure the call to scale cancel out properly with the 2x device scale and that the final transform has a proper QTransform::TransformationType . Morten _______________________________________________ Development mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/development
