GNU logs - #71850, boring messages

Message sent to jonathan.rubens@HIDDEN, luangruo@HIDDEN, bug-gnu-emacs@HIDDEN:

Subject: bug#71850: [PATCH] macOS (Cocoa) alpha-background
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Severity: wishlist

-------------------- Start of forwarded message --------------------
From: Jon Rubens <jonathan.rubens@HIDDEN>
Date: Thu, 27 Jun 2024 17:38:29 -0700
Subject: Re: macOS (Cocoa) alpha-background
To: Stefan Kangas <stefankangas@HIDDEN>
Cc: Po Lu <luangruo@HIDDEN>, emacs-devel@HIDDEN

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X-Loop: help-debbugs@HIDDEN
From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Stefan Kangas <stefankangas@HIDDEN>
Subject: bug#71850: Acknowledgement ([PATCH] macOS (Cocoa) alpha-background)
Message-ID: <handler.71850.B.171972416711286.ack <at> debbugs.gnu.org>
References: <CADwFkmksxJLqzbErwvWc08x0qULEYkEVJ0bYxx7q57=9=Kvd+w@HIDDEN>
X-Gnu-PR-Message: ack 71850
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Reply-To: 71850 <at> debbugs.gnu.org
Date: Sun, 30 Jun 2024 05:10:02 +0000

Thank you for filing a new bug report with debbugs.gnu.org.

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71850: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D71850
GNU Bug Tracking System
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Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#71850: macOS (Cocoa) alpha-background
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-------------------- Start of forwarded message --------------------
From: Jon Rubens <jonathan.rubens@HIDDEN>
Date: Wed, 19 Feb 2025 09:53:42 -0800
Subject: Re: macOS (Cocoa) alpha-background
To: Alan Third <alan@HIDDEN>, Alexander Adolf
<alexander.adolf@HIDDEN>,
	Eli Zaretskii <eliz@HIDDEN>, Rudolf Adamkovi=C4=8D <rudolf@HIDDEN>=
,
	stefankangas@HIDDEN, jonathanrubens@HIDDEN, luangruo@HIDDEN,
	emacs-devel@HIDDEN

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Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#71850: macOS (Cocoa) alpha-background
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Stefan Kangas <stefankangas@HIDDEN> writes:

> The patch seeks to enable the alpha_background frame parameter for
> MacOS (and NS). Presently, that frame parameter does nothing on MacOS.
> Similar to the alpha frame parameter, this should enable transparency
> but not change the transparency of any text.

Could you please send some instructions for how to test the patch?
I'm looking for an easy-to-use recipe that would demonstrate the effect
before and after applying this patch.

Also, is there anything else you could add regarding the use case here?

Thanks in advance.

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Jon Rubens <jonathan.rubens@HIDDEN> writes:

>> > The patch seeks to enable the alpha_background frame parameter for
>> > MacOS (and NS). Presently, that frame parameter does nothing on MacOS.
>> > Similar to the alpha frame parameter, this should enable transparency
>> > but not change the transparency of any text.
>
>> Could you please send some instructions for how to test the patch?
>> I'm looking for an easy-to-use recipe that would demonstrate the effect
>> before and after applying this patch.
>
> To test, run emacs with eval:
> emacs -Q --eval="(modify-all-frames-parameters '((alpha-background . 0.5)))"
> compare with changing "alpha" instead:
> emacs -Q --eval="(modify-all-frames-parameters '((alpha . 0.5)))"
> Notice that the text does not become transparent when alpha-background is used.
> Test with themes. Larger font size makes the effect more obvious.
>
>> Also, is there anything else you could add regarding the use case here?
> Emacs already has the alpha-background frame parameter. This patch
> enables the feature for MacOS to match X.

Thanks.  Your patch doesn't seem to apply cleanly against latest master:

patching file 'src/macfont.m'
patching file 'src/nsfns.m'
patching file 'src/nsfont.m'
1 out of 1 hunks failed--saving rejects to 'src/nsfont.m.rej'
patching file 'src/nsterm.m'
2 out of 14 hunks failed--saving rejects to 'src/nsterm.m.rej'

Could you please rebase on top of current master and resend the patch as
an attachment, created by:

    git format-patch -1

Please also add a ChangeLog entry for this change as per CONTRIBUTE, if
possible, and I think we need an entry in etc/NEWS.

Thanks in advance.

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> > The patch seeks to enable the alpha_background frame parameter for
> > MacOS (and NS). Presently, that frame parameter does nothing on MacOS.
> > Similar to the alpha frame parameter, this should enable transparency
> > but not change the transparency of any text.

> Could you please send some instructions for how to test the patch?
> I'm looking for an easy-to-use recipe that would demonstrate the effect
> before and after applying this patch.

To test, run emacs with eval:
emacs -Q --eval="(modify-all-frames-parameters '((alpha-background . 0.5)))"
compare with changing "alpha" instead:
emacs -Q --eval="(modify-all-frames-parameters '((alpha . 0.5)))"
Notice that the text does not become transparent when alpha-background is used.
Test with themes. Larger font size makes the effect more obvious.

> Also, is there anything else you could add regarding the use case here?
Emacs already has the alpha-background frame parameter. This patch
enables the feature for MacOS to match X.

-- 
Jon

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