Re: [Qemu-devel] [PATCH v3 4/4] gtk: Add "Grab On Click" option

[Michael S. Tsirkin]

On Tue, Apr 08, 2014 at 10:49:57AM +0200, Gerd Hoffmann wrote:
> On Di, 2014-04-08 at 11:11 +0300, Michael S. Tsirkin wrote:
> > On Tue, Apr 08, 2014 at 08:25:34AM +0200, Gerd Hoffmann wrote:
> > > On Mo, 2014-04-07 at 23:38 +0300, Michael S. Tsirkin wrote:
> > > > On Mon, Apr 07, 2014 at 10:07:43AM +0200, Gerd Hoffmann wrote:
> > > > > On Fr, 2014-04-04 at 12:41 +0200, Takashi Iwai wrote:
> > > > > > I simply like it better, you don't? :)
> > > > > 
> > > > > I still think we should make this simply depend on absolute/relative
> > > > > pointer mode instead of asking the user to switch it manually.
> > > > 
> > > > Hmm how do I set absolute/relative mode?
> > > 
> > > Depends on the pointer input device being used.
> > > 
> > > Start guest with "-device usb-tablet".  Go to HMP.  'info mice' should
> > > list the ps/2 mouse and the usb tablet.  Using 'mouse_set' (or was it
> > > set_mouse?) you can force one of the two devides being used.
> > > 
> > > If you pick the tablet (should be active by default) absolute pointer
> > > events are passed to the guest, and qemu works in absolute mode (i.e.
> > > sdl doesn't do pointer grabs).
> > > 
> > > If you pick the mouse relative mouse events are passed to the guest, and
> > > qemu works in relative mode (pointer grab is pretty much required to
> > > work with the guest).
> > > 
> > > cheers,
> > >   Gerd
> > > 
> > 
> > I have to say grab on click is easier to understand - more predictable.
> > Not requesting that it's made the default, but an option would be nice.
> 
> Well, usually you'll never ever pick the pointer device manually, this
> is mainly meant for testing things or checkout what the behavior is.
> 
> Another topic is how to actually activate the grab (when in relative
> mode where it is needed).  You surely don't want grab the pointer on
> hover as simply crossing the guest window will activate it.

Sounds kind of useful. Why isn't it?

> Grab-(+ungrab)-by-hotkey and grab-on-click is what SDL, virt-viewer &
> friends are doing today.  I think gtk should simply do the same for
> consistency, and I don't see a need for a config option.
> 
> cheers,
>   Gerd

Aha.
It's lack of grab on click that makes me unhappy.
So how about doing this for 2.0?
Drop grab on hover make grab on click the default.


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MST