Adding horizontal scroll bar makes the scrolling feature more discoverable to the users. The horizontal scrollbar is a bit narrower than vertical ones so we don't make too big impact on available screen real estate. The text and scrollbar widget layout is done using grid geometry manager.
An interesting side effect of Tk scrollbars is that the "elevator" size changes depending on the visible content. So the horizontal scrollbar "elevator" changes as the user scrolls the view up and down.
Signed-off-by: Pekka Kaitaniemi <kaitanie@cc.helsinki.fi> --- A modified version of the earlier patch that adds horizontal scrollbar. This version uses grid layout for text and scrollbar widgets. I have tested this patch with Tk 8.4 and 8.5 on Linux.
The width of the horizontal scrollbar (-width 10) seems to be OK with Tk 8.5 on Linux (the default seems to be about 10 as well). I don't know what it looks like on Windows and Mac, however.
gitk | 20 ++++++++++++++------ 1 files changed, 14 insertions(+), 6 deletions(-)
Show changes to gitk +14 −6
diff --git a/gitk b/gitk index f1f21e9..429b091 100755 --- a/gitk +++ b/gitk @@ -827,6 +827,7 @@ proc makewindow {} { } frame .bleft.top frame .bleft.mid + frame .bleft.bottom button .bleft.top.search -text [mc "Search"] -command dosearch pack .bleft.top.search -side left -padx 5 @@ -854,18 +855,25 @@ proc makewindow {} { checkbutton .bleft.mid.ignspace -text [mc "Ignore space change"] \ -command changeignorespace -variable ignorespace pack .bleft.mid.ignspace -side left -padx 5 - set ctext .bleft.ctext + set ctext .bleft.bottom.ctext text $ctext -background $bgcolor -foreground $fgcolor \ -state disabled -font textfont \ - -yscrollcommand scrolltext -wrap none + -yscrollcommand scrolltext -wrap none \ + -xscrollcommand ".bleft.bottom.sbhorizontal set" if {$have_tk85} { $ctext conf -tabstyle wordprocessor } - scrollbar .bleft.sb -command "$ctext yview" + scrollbar .bleft.bottom.sb -command "$ctext yview" + scrollbar .bleft.bottom.sbhorizontal -command "$ctext xview" -orient h \ + -width 10 pack .bleft.top -side top -fill x pack .bleft.mid -side top -fill x - pack .bleft.sb -side right -fill y - pack $ctext -side left -fill both -expand 1 + grid $ctext .bleft.bottom.sb -sticky nsew + grid .bleft.bottom.sbhorizontal -sticky ew + grid columnconfigure .bleft.bottom 0 -weight 1 + grid rowconfigure .bleft.bottom 0 -weight 1 + grid rowconfigure .bleft.bottom 1 -weight 0 + pack .bleft.bottom -side top -fill both -expand 1 lappend bglist $ctext lappend fglist $ctext @@ -5604,7 +5612,7 @@ proc searchmarkvisible {doall} { proc scrolltext {f0 f1} { global searchstring - .bleft.sb set $f0 $f1 + .bleft.bottom.sb set $f0 $f1 if {$searchstring ne {}} { searchmarkvisible 0 }
-- 1.5.4.3