multi-screen fixathon

[Marco Martin]

On Thursday 18 December 2008, Hans Chen wrote:
> You want to hear about another bug I found today?
>
> *How to reproduce:
> *
>
>    1. Open a window (let's say Dolphin)
>    2. Add a panel (gets added to the top) on left screen
>    3. Now you can't drag the window's title bar to the top edge of the
>    screen. That's pretty obvious: the panel is in the way.
>
> The problem is, this applies to the other screen as well. It feels like an
> invisible panel is stopping the mouse pointer (has the same height as the
> panel created in step 2, even when I resize the "real" panel).
hmm, unhide trigger in the wrong screen? i also encounter weird behaviours in 
updatestruts() it seems applied to all screens and if the resolution is 
different makes the available area of the bigger screen smaller, could be 
related to this problem?
> It doesn't matter if I first create a panel or open a window. New windows
> are also affected by this.
> If I forcibly move a window below the "invisible" panel and then drag the
> title bar, the "invisible panel" disappears.
>
> I don't know if this is a plasma bug or kwin bug, but it doesn't hurt to
> let you now. Now I'm going to disappear for a while, so unfortunately I
> won't be able to test patches etc.