From: "Jan Djärv" <jan.h.d@swipnet.se>
To: Eli Zaretskii <eliz@gnu.org>
Cc: larsi@gnus.org, emacs-devel@gnu.org
Subject: Re: image-size
Date: Fri, 21 Jun 2013 09:34:31 +0200 [thread overview]
Message-ID: <A9FA95CB-306C-45E5-BE80-EBA5C2085225@swipnet.se> (raw)
In-Reply-To: <83ehbwng5m.fsf@gnu.org>
Hello.
21 jun 2013 kl. 08:15 skrev Eli Zaretskii <eliz@gnu.org>:
>> From: Jan Djärv <jan.h.d@swipnet.se>
>> Date: Thu, 20 Jun 2013 23:42:28 +0200
>> Cc: Eli Zaretskii <eliz@gnu.org>,
>> emacs-devel@gnu.org
>>
>> Loading the image just to determine the size is a huge overhead. The image loading routines already know the image size before sending it to the server (or the equivalent for W32 and NS), otherwise they could not allocate the right size for the Pixmap. No Imagemagic is needed to figure out the image size.
>
> Yes. Thus my suggestion to have a flag in the 'load' method that
> would cause it return right after computing the size.
>
YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp> writes:
> Right. And as I mentioned in (*), a possible way to solve this
> problem is to defer the creation of Pixmap (server side resource) from
> XImage (client side resource) until the actual display happens (i.e.,
> at prepare_image_for_display rather than lookup_image), so as to avoid
> unnecessary round trip of image data between the X11 server and
> client.
Only prepare_image_for_display have to set a different value for the suggested flag, as it does load if the image is not loaded yet.
Jan D.
next prev parent reply other threads:[~2013-06-21 7:34 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 10:04 image-size Lars Magne Ingebrigtsen
2013-06-20 12:18 ` image-size Lars Magne Ingebrigtsen
2013-06-20 16:52 ` image-size Eli Zaretskii
2013-06-20 16:01 ` image-size Eli Zaretskii
2013-06-20 16:50 ` image-size Lars Magne Ingebrigtsen
2013-06-20 16:55 ` image-size Lars Magne Ingebrigtsen
2013-06-20 17:16 ` image-size Eli Zaretskii
2013-06-20 17:54 ` image-size Lars Magne Ingebrigtsen
2013-06-20 18:15 ` image-size Eli Zaretskii
2013-06-20 18:31 ` image-size Eli Zaretskii
2013-06-20 18:46 ` image-size Lars Magne Ingebrigtsen
2013-06-20 19:11 ` image-size Eli Zaretskii
2013-06-20 19:18 ` image-size Lars Magne Ingebrigtsen
2013-06-20 19:37 ` image-size Eli Zaretskii
2013-06-20 19:52 ` image-size David Engster
2013-06-20 20:50 ` image-size Eli Zaretskii
2013-06-20 19:34 ` image-size Lars Magne Ingebrigtsen
2013-06-20 19:42 ` image-size Eli Zaretskii
2013-06-20 19:52 ` image-size Lars Magne Ingebrigtsen
2013-06-20 20:53 ` image-size Eli Zaretskii
2013-06-20 20:57 ` image-size Lars Magne Ingebrigtsen
2013-06-20 21:06 ` image-size Lars Magne Ingebrigtsen
2013-06-21 6:12 ` image-size Eli Zaretskii
2013-06-20 21:42 ` image-size Jan Djärv
2013-06-21 0:46 ` image-size YAMAMOTO Mitsuharu
2013-06-21 6:27 ` image-size Lars Magne Ingebrigtsen
2013-06-26 8:25 ` image-size YAMAMOTO Mitsuharu
2013-06-26 10:39 ` image-size YAMAMOTO Mitsuharu
2013-06-26 12:04 ` image-size Lars Magne Ingebrigtsen
2013-06-27 0:46 ` image-size Lars Magne Ingebrigtsen
2013-06-27 2:49 ` image-size Stefan Monnier
2013-06-28 2:46 ` image-size YAMAMOTO Mitsuharu
2013-06-28 3:12 ` image-size Juanma Barranquero
2013-06-28 3:45 ` image-size YAMAMOTO Mitsuharu
2013-06-21 6:15 ` image-size Eli Zaretskii
2013-06-21 7:34 ` Jan Djärv [this message]
2013-06-21 8:27 ` image-size Eli Zaretskii
2013-06-21 9:03 ` image-size Jan Djärv
2013-06-21 9:07 ` image-size Lars Magne Ingebrigtsen
2013-06-21 9:58 ` image-size Eli Zaretskii
2013-06-21 9:57 ` image-size Eli Zaretskii
2013-06-21 6:13 ` image-size Eli Zaretskii
2013-06-21 15:54 ` image-size Willem Rein Oudshoorn
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