git-gui: use gray background for inactive text widgets

This makes it easier to see at a glance which of the four main views has the keyboard focus. Signed-off-by: Stefan Haller <stefan@haller-berlin.de> Signed-off-by: Pratyush Yadav <me@yadavpratyush.com>

Stefan Haller committed Dec 18, 2020 at 10:43 UTC da4d86da97a316413cf25bef99332525dbfb4d59
2 files changed +37 -16
git-gui.sh
+12 -6
@@ -720,9 +720,6 @@ proc rmsel_tag {text} {
720 -background [$text cget -background] \
721 -foreground [$text cget -foreground] \
722 -borderwidth 0
723 - $text tag conf in_sel\
724 - -background $color::select_bg \
725 - -foreground $color::select_fg
723 bind $text <Motion> break
724 return $text
725 }
@@ -3328,11 +3325,20 @@ if {!$use_ttk} {
3325 .vpane.files paneconfigure .vpane.files.index -sticky news
3326 }
3327
3328 +proc set_selection_colors {w has_focus} {
3329 + foreach tag [list in_diff in_sel] {
3330 + $w tag conf $tag \
3331 + -background [expr {$has_focus ? $color::select_bg : $color::inactive_select_bg}] \
3332 + -foreground [expr {$has_focus ? $color::select_fg : $color::inactive_select_fg}]
3333 + }
3334 +}
3335 +
3336 foreach i [list $ui_index $ui_workdir] {
3337 rmsel_tag $i
3333 - $i tag conf in_diff \
3334 - -background $color::select_bg \
3335 - -foreground $color::select_fg
3338 +
3339 + set_selection_colors $i 0
3340 + bind $i <FocusIn> { set_selection_colors %W 1 }
3341 + bind $i <FocusOut> { set_selection_colors %W 0 }
3342 }
3343 unset i
3344
lib/themed.tcl
+25 -10
@@ -6,19 +6,25 @@ namespace eval color {
6 # Variable colors
7 # Preffered way to set widget colors is using add_option.
8 # In some cases, like with tags in_diff/in_sel, we use these colors.
9 - variable select_bg lightgray
10 - variable select_fg black
9 + variable select_bg lightgray
10 + variable select_fg black
11 + variable inactive_select_bg lightgray
12 + variable inactive_select_fg black
13
14 proc sync_with_theme {} {
13 - set base_bg [ttk::style lookup . -background]
14 - set base_fg [ttk::style lookup . -foreground]
15 - set text_bg [ttk::style lookup Treeview -background]
16 - set text_fg [ttk::style lookup Treeview -foreground]
17 - set select_bg [ttk::style lookup Default -selectbackground]
18 - set select_fg [ttk::style lookup Default -selectforeground]
15 + set base_bg [ttk::style lookup . -background]
16 + set base_fg [ttk::style lookup . -foreground]
17 + set text_bg [ttk::style lookup Treeview -background]
18 + set text_fg [ttk::style lookup Treeview -foreground]
19 + set select_bg [ttk::style lookup Default -selectbackground]
20 + set select_fg [ttk::style lookup Default -selectforeground]
21 + set inactive_select_bg [convert_rgb_to_gray $select_bg]
22 + set inactive_select_fg $select_fg
23
24 set color::select_bg $select_bg
25 set color::select_fg $select_fg
26 + set color::inactive_select_bg $inactive_select_bg
27 + set color::inactive_select_fg $inactive_select_fg
28
29 proc add_option {key val} {
30 option add $key $val widgetDefault
@@ -36,11 +42,20 @@ namespace eval color {
42 add_option *Text.Foreground $text_fg
43 add_option *Text.selectBackground $select_bg
44 add_option *Text.selectForeground $select_fg
39 - add_option *Text.inactiveSelectBackground $select_bg
40 - add_option *Text.inactiveSelectForeground $select_fg
45 + add_option *Text.inactiveSelectBackground $inactive_select_bg
46 + add_option *Text.inactiveSelectForeground $inactive_select_fg
47 }
48 }
49
50 +proc convert_rgb_to_gray {rgb} {
51 + # Simply take the average of red, green and blue. This wouldn't be good
52 + # enough for, say, converting a photo to grayscale, but for this simple
53 + # purpose of approximating the brightness of a color it's good enough.
54 + lassign [winfo rgb . $rgb] r g b
55 + set gray [expr {($r / 256 + $g / 256 + $b / 256) / 3}]
56 + return [format "#%2.2X%2.2X%2.2X" $gray $gray $gray]
57 +}
58 +
59 proc ttk_get_current_theme {} {
60 # Handle either current Tk or older versions of 8.5
61 if {[catch {set theme [ttk::style theme use]}]} {