[PATCH] gitk: use makedroplist, not ::combobox

Mark Levedahl· May 10, 2025, 17:17 UTC · lore

gitk offers to not use themed tk (ttk), and cannot use such on Tcl/Tk earlier than 8.5 where ttk was introduced. To facilitate this, widgets are switched from themed to not by use of the global ${NS}: ${NS} == ttk to select themed widgets, "" for non-themed. The combobox widget exists only in ttk, and proc makedroplist exists to create a combobox like widget using only base tk widgets.

However, 904b36b815 ("gitk: add text wrapping preferences", 2024-12-05), introduced two instances of ${NS}::combobox, and since that commit, gitk effectively requires Tk >= 8.5 and themed widgets enabled.

Fix this by using makedropbox instead.

Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
---
 gitk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Show changes to gitk +2 −2

diff --git a/gitk b/gitk
index 11ad639..d48982f 100755
--- a/gitk
+++ b/gitk
@@ -11736,12 +11736,12 @@ proc prefspage_general {notebook} {
     grid x $page.tabstopl $page.tabstop -sticky w
 
     ${NS}::label $page.wrapcommentl -text [mc "Wrap comment text"]
-    ${NS}::combobox $page.wrapcomment -values {none char word} -state readonly \
+    makedroplist $page.wrapcomment -values {none char word} -state readonly \
         -textvariable wrapcomment
     grid x $page.wrapcommentl $page.wrapcomment -sticky w
 
     ${NS}::label $page.wrapdefaultl -text [mc "Wrap other text"]
-    ${NS}::combobox $page.wrapdefault -values {none char word} -state readonly \
+    makedroplist $page.wrapdefault -values {none char word} -state readonly \
         -textvariable wrapdefault
     grid x $page.wrapdefaultl $page.wrapdefault -sticky w

-- 
2.49.0.99.610

Johannes Sixt· May 10, 2025, 17:52 UTC · re: Mark Levedahl · lore

Re: [PATCH] gitk: use makedroplist, not ::combobox

Am 10.05.25 um 19:17 schrieb Mark Levedahl:

Show 37 quoted lines

> gitk offers to not use themed tk (ttk), and cannot use such on Tcl/Tk
> earlier than 8.5 where ttk was introduced. To facilitate this, widgets
> are switched from themed to not by use of the global ${NS}: ${NS} == ttk
> to select themed widgets, "" for non-themed. The combobox widget exists
> only in ttk, and proc makedroplist exists to create a combobox like
> widget using only base tk widgets.
> 
> However, 904b36b815 ("gitk: add text wrapping preferences", 2024-12-05),
> introduced two instances of ${NS}::combobox, and since that commit,
> gitk effectively requires Tk >= 8.5 and themed widgets enabled.
> 
> Fix this by using makedropbox instead.
> 
> Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
> ---
>  gitk | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/gitk b/gitk
> index 11ad639..d48982f 100755
> --- a/gitk
> +++ b/gitk
> @@ -11736,12 +11736,12 @@ proc prefspage_general {notebook} {
>      grid x $page.tabstopl $page.tabstop -sticky w
>  
>      ${NS}::label $page.wrapcommentl -text [mc "Wrap comment text"]
> -    ${NS}::combobox $page.wrapcomment -values {none char word} -state readonly \
> +    makedroplist $page.wrapcomment -values {none char word} -state readonly \
>          -textvariable wrapcomment
>      grid x $page.wrapcommentl $page.wrapcomment -sticky w
>  
>      ${NS}::label $page.wrapdefaultl -text [mc "Wrap other text"]
> -    ${NS}::combobox $page.wrapdefault -values {none char word} -state readonly \
> +    makedroplist $page.wrapdefault -values {none char word} -state readonly \
>          -textvariable wrapdefault
>      grid x $page.wrapdefaultl $page.wrapdefault -sticky w
>

Unfortunately, the fix is not that simple. `makedroplist` isn't just a drop-in replacement for `${NS}::combobox`.

Allow me to prefer https://github.com/j6t/gitk/commit/c259b2ede8a74809005f81eeb6bb827b1d9692e0, reproduced below, over this patch.

-- Hannes

From: YOKOTA Hiroshi <yokota.hgml@gmail.com>
Subject: [PATCH] gitk: Legacy widgets doesn't have combobox

Use "proc makedroplist" function to support combobox on legacy widgets mode. "proc makedroplist" uses "ttk::combobox" for themed mode, and uses "tk_optionMenu" for legacy mode to get rid of the probrem.

Signed-off-by: YOKOTA Hiroshi <yokota.hgml@gmail.com>
---
 gitk | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Show changes to gitk +2 −4

diff --git a/gitk b/gitk
index 0d96597..fc1dd61 100755
--- a/gitk
+++ b/gitk
@@ -11782,13 +11782,11 @@ proc prefspage_general {notebook} {
     grid x $page.tabstopl $page.tabstop -sticky w
 
     ${NS}::label $page.wrapcommentl -text [mc "Wrap comment text"]
-    ${NS}::combobox $page.wrapcomment -values {none char word} -state readonly \
-        -textvariable wrapcomment
+    makedroplist $page.wrapcomment wrapcomment none char word
     grid x $page.wrapcommentl $page.wrapcomment -sticky w
 
     ${NS}::label $page.wrapdefaultl -text [mc "Wrap other text"]
-    ${NS}::combobox $page.wrapdefault -values {none char word} -state readonly \
-        -textvariable wrapdefault
+    makedroplist $page.wrapdefault wrapdefault none char word
     grid x $page.wrapdefaultl $page.wrapdefault -sticky w
 
     ${NS}::checkbutton $page.ntag -text [mc "Display nearby tags/heads"] \

-- 
2.49.0.212.gc22db56b11.dirty

patchgitk: use makedroplist, not ::combobox