Linked by lopisaur on Fri 25th Jun 2010 22:21 UTC
Ubuntu, Kubuntu, Xubuntu Based upon a recent email to the X.Org developers' mailing list, Canonical is nearing the point of one of their goals for Ubuntu 10.10 of a rootless X Server, or being able to run the X.Org Server without root privileges.
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RE[8]: Big deal...
by Elv13 on Sat 26th Jun 2010 16:58 UTC in reply to "RE[7]: Big deal..."
Elv13
Member since:
2006-06-12

This should not happen when compositing is on, as the lower layer does not need to be drawed again. See 2D without compositing as one single image. If you alter (with a combobox) one part, then what was under it does not exist anymore, so it need to be recreated after the alteration (combobox) is gone.

With compositing, it is a stack. The image you see is composed of multiple layers, each being on top, or not of an other. They are separated and does not need to each other. If you remove a layer (your combobox), then it will just show a lower layer, no need to as the widget to replain itself (that is slow).

Reply Parent Score: 2

RE[9]: Big deal...
by Moochman on Sat 26th Jun 2010 21:48 in reply to "RE[8]: Big deal..."
Moochman Member since:
2005-07-06

This should not happen when compositing is on, as the lower layer does not need to be drawed again.


Are you sure about that? I was under the impression that the compositing window managers did nothing other than composite windows, not the widgets within the windows....

Reply Parent Score: 2

RE[10]: Big deal...
by Elv13 on Sat 26th Jun 2010 23:00 in reply to "RE[9]: Big deal..."
Elv13 Member since:
2006-06-12

The widtget -layer- (plasma) is a layer and the QComboBox is a proxy Widget to a real QComboBox. The QComboBox create a popup window on top of the layer that created the window. So yes, a QComboBox poupup is composited.

Reply Parent Score: 2