Re: [PATCH 0/2] perf newt: Zoom operations

From: Ingo Molnar
Date: Sun Apr 04 2010 - 15:05:31 EST

* Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxx> wrote:

> Em Sun, Apr 04, 2010 at 11:58:27AM +0200, Ingo Molnar escreveu:
> > * Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxx> wrote:
> > > Arnaldo Carvalho de Melo (2):
> > > perf newt: Add a "Zoom into DSO" and reverse operations
> > > perf TUI: Add a "Zoom into COMM(PID) thread" and reverse operations
> >
> > Pulled, thanks Arnaldo!
> >
> > There's still a few basic usability glitches that i've noticed:
> >
> > - it's not clear how to zoom out, once zoomed in
> I'll use the title line to store the name of the DSO and Thread and the help
> line to state that to zoom out, press -> + zoom out, and I think that it is
> a good idea to use 'd' and 'D' to zoom in/out of DSOs and 't' and 'T' to
> zoom in/out of DSOs.

Cool, a help line will do the trick i'm sure. The only problem situation is
when there is zero information about how to proceed - some people exit and
dont ever come back in that case :-)

> > - there's no help screen and no help line for people to see what can be
> > done on a given screen. While it's good that the intuitive things work
> > by default (arrow keys, escape, enter, etc.), there should also be additional
> > visual information about what can be done.
> F1 and textboxes with a short description of what can be done given for the
> first time or till the user presses "Suppress these info boxes" will be
> added.

Maybe we need 'h' and '?' in addition of F1, as F1 is often already mapped and
caught by the terminal (it is so with gnome-terminal).

> > - i think double escape should exit, right now it stays at the 'are you sure'
> > screen
> Here I thought that something had to be done to avoid that accidentally
> pressing ESC two times or having "Yes" as default option, trowing away
> possibly a long processed session, what do others think about it?

Yeah, i think you are right.

> I think that ESC + "Yes" as a default may be ok, as two keys need to be
> pressed (ESC + Enter), enough warning/confirmation, I gues, right?

Ok, that would work!


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