On Thu, 18 Jul 2002 [EMAIL PROTECTED] wrote:
> > On Wed, 17 Jul 2002, Christopher A Len wrote:
> >
> > > Is there a way to lock the viewport from panning to other areas of the
> > > virtual desktop? Normally, I run 1152x864 desktop and 1152x864 viewport.
> > > However, I want to be able to zoom in on a window (eg change viewport to
> > > 640x480 or 800x600), and keep the viewport from scrolling when the pointer
> > > hits the screen edge. Is there a way to do this? I tried scroll lock, it
> > > had no effect. My keyboard map is us104. Any feedback would be
> > > appreciated. I cant imagine something like this hasn't been implemented
> > > yet...
> > >
> >
> > We've discussed this years ago. It's possibly not difficult to
> > implement either. Nobody seemed to care enough about it to do this
> > though. Somebody would have to care enough about it to volunteer
> > to do the work. You perhaps?
>
> I actually had this working in my tree at home a couple of years ago.
> That is, I could move the viewport, press ScrollLock, and then the viewport
> was locked in that position until ScrollLock was pressed again. There
> were some complications though:
>
> 1) There needed to be a way to configure which key controlled the viewport lock
>
> 2) A client-side interface would have been useful. For example, a window manager
> could receive an event when the viewport was locked and remap the positions of
> windows to fit within the visable viewport. Or it could have initiated the
> viewport lock. Maybe allowing a client to enable/disable the effect of the
> ScrollLock key would have been nice.
>
> 3) How do you mix it with Xinerama or even plain multi-head configs? Should
> moving the mouse to the edge of the viewport trigger a switch to another screen?
>
It's not clear what the best behavior is. Also, when one modeswitches,
that modeswitch goes into effect on the head the pointer is on at that
time. The Scroll-lock key, however, would imply a global action, not
a head-specific action. Maybe another hotkey would be better than the
scroll-lock key.
Mark.
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