Re: XFree86 5.0 TODO

On Fri, Mar 21, 2003 at 10:50:22PM +0100, Egbert Eich wrote:
> Sven Luther writes:
>  > > 
>  > > No, the model I have in mind is not window driven. The driver only
>  > > gets the information to zoom a part of the screen. It doesn't care
>  > > what is displayed there. Your application has the notion of a window.
>  > 
>  > What application are you speaking of here ? The window manager ? The
>  > specific app that own the window ? The configurator app ? A special
>  > zooming app ?
> 
> Your zooming application.

Ok, ...

Would it be possible for the zooming app to get feedback from the
windows manager when the window get moved, or maybe from the X server
directly ?

>  > > It has to do the proper things if this window is enlarged, obscured,
>  > > closed.
>  > 
>  > Mmm, what would be the behavior here in case the window is partially
>  > hidden ? With the technical solution i propose, the second head would
>  > simply be a viewport into the framebuffer of the first head, so there
>  > would be no way it could un-hide the window content.
> 
> Yes. But the application could soom the window differently
> or whatever. The problem you would have generally is that
> you don't want to distort the aspekt ratio, therefore on
> a window not having the same aspect ration as you second
> head you'd have to display areas outside of the window, too.

Mmm, i think you can be more flexible here, you can choose not to
preserve the image ratio, or fill the outside areas with background
color, like what happens when you use a smaller resolution on a fixed
size LCD monitor for example. I am not all that sure if this would be
supported on all monitors, but some sort of clipping or something such
should be ok.

>  > > I wouldn't involve XAA in this. If you want to do it on the
>  > > driver level you'd have to wrap some of the window functions. In this
>  > > case you could pass in the WID, that would probably work, too.
>  > 
>  > Sounds good, i would have to look into that too when i get time.
>  > 
> 
> OK. Great, I'm looking forward to have this feature.

Ok, but it will not be for the near future, as other things are higher
in my todo list.

Friendly,

Sven Luther