Re: [TCLCORE] TIP 742: Add Mouse Wheel Zoom Support to Tk Console

[Marc C. <cul...@gm...>]

Eric,

You created a fork in the main branch when you merged the code for TIP
#742.  Please close it.

- Marc

On Fri, Dec 5, 2025 at 2:10 PM EricT <tw...@gm...> wrote:

> Harald,
>
> Thanks for sponsoring the TIP 742.
>
> I've created a local implementation branch for TIP #742 (Add Mouse Wheel
> Zoom Support to Tk Console), but I don't have write access to push it to
> the core repository.
>
> Attached is the patch file with the implementation. The changes are
> minimal - just adding a Control+MouseWheel binding to library/console.tcl
> that generates the existing <<Console_FontSizeIncr>> and
> <<Console_FontSizeDecr>> virtual events.
>
> Could someone with write access please create the implementation branch
> tip-742-mousewheel-zoom and apply this patch?
>
>
> Regards, the console freezing. Yes, it is a definite no-no to create very
> long lines, as for example, [string repeat  xyz 25000] will pretty much
> kill the console. However, this is not very common for debugging output. In
> that case, when I would output quite a bit of text, from say a trace, the
> console killer then would be when the text widget would try to do the "see"
> operation on each line to position to the end of the text widget.
>
> This I avoid by only doing a single "see" every 100 ms or so. Then in that
> context, I have good performance. But it only addresses the one problem
> where I'm doing thousands of relatively short lines (100 chars or less per
> line).
>
> I would consider this more of a hack, not a real solution to address
> console performance.
>
> Thanks
> Eric
>
>
> On Fri, Dec 5, 2025 at 2:04 AM Harald Oehlmann <
> har...@el...> wrote:
>
>> Eric has authored this TIP:
>>
>> https://core.tcl-lang.org/tips/doc/trunk/tip/742.md
>>
>> I think, this is a good idea.
>> Is the unix console ready? Any action there?
>>
>> Eric, I sponsor your TIP.
>> Can you make an implementation branch and a call for discussion, then
>> vote?
>>
>> There was the discussion on the revised text widget on c.l.t. The
>> console uses the text widget.
>> You had a contribution there.
>>
>> What I see with the console:
>> - lots of content with very long lines.
>> - You resize the widget or scale the font
>> - The widget freezes as the line break algorithm has to run. To my
>> knowledge, this is very fast with the revised text widget.
>>
>> You had a proposal on c.l.t. Perhaps, this may also be added here.
>>
>> Thanks,
>> Harald
>>
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