From: Andy Moreton <andrewjmoreton@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: Testing native image scaling
Date: Wed, 27 Mar 2019 19:06:47 +0000 [thread overview]
Message-ID: <vz1y350gmrc.fsf@gmail.com> (raw)
In-Reply-To: 831s2skvld.fsf@gnu.org
On Wed 27 Mar 2019, Eli Zaretskii wrote:
>> From: Andy Moreton <andrewjmoreton@gmail.com>
>> Date: Wed, 27 Mar 2019 18:35:09 +0000
>>
>> > It seems to work, but maybe I don't know what and how to check. Can
>> > you show what I should expect to see with and without the :scale
>> > attribute, in "emacs -Q"?
>>
>> I would expect a sliced image to be composed of a grid of tiled images
>> instead of a single image, but to have the same visual appearance as the
>> original image. The w32 code does not get this right.
>
> Did insert-sliced-image ever work on Windows, even before scaling was
> added?
>
>> Adding the ":scale 0.5" argument scales down the tiled array of images
>> correctly, but they still contain the same display artifacts as the
>> sliced image without scaling.
>
> Thanks, but I asked for the _correct_ image I need to expect, because
> I want something to compare to if/when I decide to try to fix this.
Sorry - I thought that was clear. The following forms should all produce
the same visual appearance in the buffer:
(insert-image (create-image "splash.png" nil nil :scale 0.5))
(insert-sliced-image (create-image "splash.png" nil nil :scale 0.5)
nil nil 1 1)
(insert-sliced-image (create-image "splash.png" nil nil :scale 0.5)
nil nil 3 5)
The sliced images are displayed as an array of tiled smaller images, but
should otherwise have the same appearance as the original (non-sliced)
image.
AndyM
next prev parent reply other threads:[~2019-03-27 19:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-19 9:31 Testing native image scaling Eli Zaretskii
2019-01-19 21:45 ` Alan Third
2019-01-20 16:05 ` Eli Zaretskii
2019-01-20 19:26 ` Alan Third
2019-01-20 19:41 ` Eli Zaretskii
2019-01-20 20:19 ` Alan Third
2019-03-27 2:35 ` YAMAMOTO Mitsuharu
2019-03-27 17:09 ` Eli Zaretskii
2019-03-27 18:35 ` Andy Moreton
2019-03-27 18:42 ` Eli Zaretskii
2019-03-27 19:06 ` Andy Moreton [this message]
2019-03-27 19:34 ` Andy Moreton
2019-03-28 2:26 ` YAMAMOTO Mitsuharu
2019-03-28 16:02 ` Eli Zaretskii
2019-03-28 18:06 ` Andy Moreton
2019-03-28 18:19 ` Eli Zaretskii
2019-03-28 19:29 ` Andy Moreton
2019-03-28 20:09 ` Eli Zaretskii
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