feature: display (briefly) resulting number of columns after font resize

[quite]

I always end up checking that I have around 75-95 columns in my terminal after resizing the font. It would be great if the number of columns that the new font size results in would be displayed after a resize. Assuming it's feasible to get hold of this value. Urxvt has some kind of overlay text system that might be used for this, right? Only flashing the number for a second or so would be ideal I think.

[simmel]

On Mon, 2016-09-05 at 01:21:37 -0700, Daniel Lublin wrote:

I always end up checking that I have around 75-95 columns in my terminal after resizing the font. It would be great if the number of columns that the new font size results in would be displayed after a resize. Assuming it's feasible to get hold of this value. Urxvt has some kind of overlay text system that might be used for this, right? Only flashing the number for a second or so would be ideal I think.

Maybe it can be added to the URxvt.resize-font.show display which currently shows what size the font is at? It's bound to ^? by default.

[quite]

Aha, well, not needing another keypress would be sweet ;)

[simmel]

$COLUMNS and/or $LINES didn't work. Neither did stty size.

Investigating the proper way using the Perl API now.

[simmel]

After thinking about this, I won't add this feature. It has "nothing" to do with resizing the font. If more people request it, I might change my mind.

How ever, I had much fun in coding this feature, so here is the code for a very small extension for doing exactly what you want. Just save this as show-size and load it:

# vim:ft=perl:fenc=utf-8
# Re-bind to another key with:
# URxvt.keysym.C-9:     perl:show-size:show
sub on_init {
   my ($self) = @_;
   $self->bind_action("C-9" => "%:show") or warn "Can't bind defaults";
   ()
}

# sub on_user_command {
sub on_action {
  my ($self, $string) = @_;

  if ($string eq "show") {
    my $term = $self->{'term'};
    my $rows = $self->nrow();
    my $columns = $self->ncol();
    $term->{'show-size'}{'overlay'} = {
      ov => $term->overlay_simple(0, -1, "Columns: $columns Lines: $rows\n"),
      to => urxvt::timer
      ->new
      ->start(urxvt::NOW + 1)
      ->cb(sub {
        delete $term->{'show-size'}{'overlay'};
      }),
    };
  }

  ()
}

[quite]

Tack :)