Re: New window placement (was: Re: Focus stealing prevention)

[Rob Adams <readams readams net>]

And incidentally if a window has a transient parent, then it will be
placed centered over the parent window.  If a window has no parent
window specified, then the full placement algorithm is used.

-Rob

On Mon, 2004-12-06 at 09:06 -0800, Rob Adams wrote:
> Currently metacity works very very hard to do the right thing in window
> placement for xinerama.  It works more or less as follows:
> 
> 1) Try to find a place for the window on the current xinerama
> 2) Construct a "natural xinerama ordering" which is a breadth-first
> traversal of the xinerama graph from the xinerama containing the mouse
> point, with preference to left, then right, then up, then down.
> 3) walk the natural xinerama ordering to find a nearby xinerama with an
> empty space that could contain the window
> 4) if the window is big enough to be maximized, try to find an empty
> xinerama where it could go
> 5) if there is nowhere the window can fit, fall back to a cascade on the
> xinerama containing the pointer
> 
> I find that this algorithm makes it exceedingly easy to make good use of
> all the space available on both screens.  A simple "always on current
> xinerama" policy would simply encourage users to use only one xinerama,
> which is really just silly.  If you have two monitors, why not use them?
> 
> The one improvement that I'd like to make here is to improve the cascade
> algorithm so that it doesn't ever just place window at the upper left
> corner of the screen.
> 
> -Rob
> 
> On Mon, 2004-12-06 at 13:39 +0100, uws wrote:
> > På Mon, Dec 06, 2004 at 07:28:09AM -0500, Larry W. Virden skrev:
> > > From: uws <uws xs4all nl>
> > > > Another Metacity enhancement request: open new windows on the screen the
> > > > mouse cursor is on. A lot of new windows are placed on my secondary monitor,
> > > > while I'm working on the first one.
> > 
> > > > Is this a useful feature for Metacity?
> > 
> > > Perhaps this needs to be a preference.  I know myself that I want
> > > new application windows to appear on the same monitor and
> > > workspace as the parent application window .
> > 
> > Sounds reasonable. The case I was thinking of was:
> > 
> > - Start an application using a keyboard shortcut (I tend to use meta-[qwert]
> >   for menu, web browser, nautilus, run dialog and terminal)
> > - Hit the key combo again because you didn't see the terminal window popping
> >   up on my secondary monitor.
> > 
> > Now I end up with two terminals windows :(
> > 
> > So, the question is: What to do with new windows that don't have a parent
> > window? I think we have two choices:
> > 
> > 1. Same monitor as the mouse pointer
> > 2. Same monitor as the current activated window
> > 
> > I think option 2 is the best choice. If no window was active, metacity could
> > use option 1.
> > 
> >   mvrgr, Wouter
> > 
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