top: tweaks to vertical scroll management & 'i' toggle

The commit referenced below claims to disable vertical
scrolling when idle tasks weren't being shown. However
it really addresses only a point in time when that 'i'
toggle is keyed. Left untouched were the up/down keys.

So this commit will simply finish the job of disabling
vertical scrolling whenever tasks which have used some
CPU are the only ones which are currently being shown.

Reference(s):
commit c07f6c5e6d6170ef3f2373b4d86988184c3235bf

Signed-off-by: Jim Warner <james.warner@comcast.net>

diff --git a/top/top.c b/top/top.c
index 64b6ef801dd17dbb22f72c6be3dafea563d0d92a..e355747ff878a4938c18514a2add0ffc8601d4c5 100644 (file)
--- a/top/top.c
+++ b/top/top.c
@@ -4730,10 +4730,10 @@ static void keys_window (int ch) {
          }
          break;
       case kbd_UP:
-         if (VIZCHKw(w)) if (0 < w->begtask) w->begtask -= 1;
+         if (VIZCHKw(w)) if (CHKw(w, Show_IDLEPS) && 0 < w->begtask) w->begtask -= 1;
          break;
       case kbd_DOWN:
-         if (VIZCHKw(w)) if (w->begtask < Frame_maxtask - 1) w->begtask += 1;
+         if (VIZCHKw(w)) if (CHKw(w, Show_IDLEPS) && (w->begtask < Frame_maxtask - 1)) w->begtask += 1;
          break;
 #ifdef USE_X_COLHDR // ------------------------------------
       case kbd_LEFT: