[PySide] inherited values that contribute to widgets position

Srini Kommoori vasure at gmail.com
Tue Jun 19 07:30:48 CEST 2012

Frank, Pls disregard the previous info then.

I tried doing my own animation but gave up after playing around with
QGraphicsView as it has in-built animation controls.

While trying to do my own custom animation, QPainterPath.cubicTo was very
useful in getting bezier curve  implementation for smooth animations. If
you are not using this, it might be useful ( http://goo.gl/0qlBG - PySide
docs to QtGui.QPainterPath.cubicTo)

All the best.


On Mon, Jun 18, 2012 at 9:14 PM, Frank Rueter | OHUfx <frank at ohufx.com>wrote:

>  Hi Srini,
> thanks for the details but I'm not using QGraphicsView.
> This is a custom Widget with a stacked layout, that slides the old widgets
> out of frame and the new ones in.
> I'm thinking something like this might be what I need to collect and add
> to the widgets' position to get their true positional values (so the
> animation won't stutter):
> self.style().pixelMetric( QStyle.PM_DefaultFrameWidth )
> On 19/06/12 4:08 PM, Srini Kommoori wrote:
> As you are asking about animation, I am assuming you are
> using QtGui.QGraphicsView.
>  Working with QGraphicsView, I found following few key things related to
> size/coordinates.
>  1. By default QtGui.QGraphicsView aligns the scene to center. So all
> resizes are set wrt center. To change the anchoring back to top, use
> following.
>  setAlignment(QtCore.Qt.AlignTop)
>  2. If you are trying to get resizable scene, you may want to
> use resizeEvent of QtGui.QGraphicsView and adjust your widgets/layouts.
>  3. Have a default screen size so that widget reference starting point is
> something you can always control. You could also do relative distances
> based on the screen size - but it is some more initialization that you need
> to take care of.
>  Hope above is what you are looking for.
>  thanks
> -Srini
> On Mon, Jun 18, 2012 at 4:33 PM, Frank Rueter | OHUfx <frank at ohufx.com>wrote:
>> Hi everyone,
>> I am trying to learn what inherited value may contribute to a widget's
>> real screen position.
>> In my example I have a widget that I am animating out of frame, so I
>> need to determine exactly what it's static position is to be able to set
>> that as the animation's start value. If I just use QWidget.pos().x() I
>> am 5 pixels off. So currently I'm just adding 5 pixels manually, but
>> would love to understand where those come from and how to calculate the
>> widget's position properly and reliably.
>> Any ideas anyone?
>> Cheers,
>> frank
>> _______________________________________________
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>> PySide at qt-project.org
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