[PATCH] gitk: Let the ttk theme be controllable via preferences.

@@ -2626,7 +2626,7 @@ proc savestuff {w} {
     global cmitmode wrapcomment datetimeformat limitdiffs
     global colors uicolor bgcolor fgcolor diffcolors diffcontext selectbgcolor
     global autoselect extdifftool perfile_attrs markbgcolor use_ttk
-    global hideremotes want_ttk
+    global hideremotes want_ttk ttk_theme
 
     if {$stuffsaved} return
     if {![winfo viewable .]} return

@@ -2653,6 +2653,7 @@ proc savestuff {w} {
 	puts $f [list set limitdiffs $limitdiffs]
 	puts $f [list set uicolor $uicolor]
 	puts $f [list set want_ttk $want_ttk]
+	puts $f [list set ttk_theme $ttk_theme]
 	puts $f [list set bgcolor $bgcolor]
 	puts $f [list set fgcolor $fgcolor]
 	puts $f [list set colors $colors]

@@ -10696,7 +10697,7 @@ proc doprefs {} {
     global oldprefs prefstop showneartags showlocalchanges
     global uicolor bgcolor fgcolor ctext diffcolors selectbgcolor markbgcolor
     global tabstop limitdiffs autoselect extdifftool perfile_attrs
-    global hideremotes want_ttk have_ttk
+    global hideremotes want_ttk have_ttk ttk_theme
 
     set top .gitkprefs
     set prefstop $top

@@ -10705,7 +10706,8 @@ proc doprefs {} {
 	return
     }
     foreach v {maxwidth maxgraphpct showneartags showlocalchanges \
-		   limitdiffs tabstop perfile_attrs hideremotes want_ttk} {
+		   limitdiffs tabstop perfile_attrs hideremotes want_ttk \
+		   ttk_theme} {
 	set oldprefs($v) [set $v]
     }
     ttk_toplevel $top

@@ -10764,6 +10766,17 @@ proc doprefs {} {
     }
     grid x $top.want_ttk $top.ttk_note -sticky w
 
+    if {$have_ttk} {
+	ttk::combobox $top.ttk_theme -textvariable ttk_theme \
+	    -values [ttk::style theme names]
+	$top.ttk_theme state readonly
+	if {!$use_ttk} {
+	    $top.ttk_theme state disabled
+	}
+	${NS}::label $top.lttk_theme -text [mc "Theme"]
+	grid x $top.lttk_theme $top.ttk_theme -sticky w
+    }
+
     ${NS}::label $top.cdisp -text [mc "Colors: press to choose"]
     grid $top.cdisp - -sticky w -pady 10
     label $top.ui -padx 40 -relief sunk -background $uicolor

@@ -10892,7 +10905,8 @@ proc prefscan {} {
     global oldprefs prefstop
 
     foreach v {maxwidth maxgraphpct showneartags showlocalchanges \
-		   limitdiffs tabstop perfile_attrs hideremotes want_ttk} {
+		   limitdiffs tabstop perfile_attrs hideremotes want_ttk \
+		   ttk_theme} {
 	global $v
 	set $v $oldprefs($v)
     }

@@ -10906,7 +10920,7 @@ proc prefsok {} {
     global oldprefs prefstop showneartags showlocalchanges
     global fontpref mainfont textfont uifont
     global limitdiffs treediffs perfile_attrs
-    global hideremotes
+    global hideremotes use_ttk ttk_theme
 
     catch {destroy $prefstop}
     unset prefstop

@@ -10955,6 +10969,9 @@ proc prefsok {} {
     if {$hideremotes != $oldprefs(hideremotes)} {
 	rereadrefs
     }
+    if {$use_ttk && $ttk_theme != $oldprefs(ttk_theme)} {
+	ttk::style theme use $ttk_theme
+    }
 }
 
 proc formatdate {d} {

@@ -11369,6 +11386,7 @@ set datetimeformat "%Y-%m-%d %H:%M:%S"
 set autoselect 1
 set perfile_attrs 0
 set want_ttk 1
+set ttk_theme "default"
 
 if {[tk windowingsystem] eq "aqua"} {
     set extdifftool "opendiff"

@@ -11519,6 +11537,10 @@ if {![info exists have_ttk]} {
 set use_ttk [expr {$have_ttk && $want_ttk}]
 set NS [expr {$use_ttk ? "ttk" : ""}]
 
+if {$use_ttk} {
+    ttk::style theme use $ttk_theme
+}
+
 set git_version [join [lrange [split [lindex [exec git version] end] .] 0 2] .]
 
 set runq {}