From: Jack Kamm <jackkamm@gmail.com>
To: emacs-orgmode@gnu.org
Subject: Re: Displaying remote images
Date: Thu, 28 Nov 2019 18:00:06 -0800 [thread overview]
Message-ID: <87tv6nsaqh.fsf@gmail.com> (raw)
In-Reply-To: <8736e8sza3.fsf@gmail.com>
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I've attached a patch which implements displaying remote images.
> This is a longstanding problem, and there was an attempt to patch it in
> 2014, but the patch was never accepted:
> https://lists.gnu.org/archive/html/emacs-orgmode/2014-11/msg00583.html
Compared to the previous attempt from 2014, I think my patch is simpler
-- it doesn't require creating any temp files.
> The fault might be with image.el rather than with org-mode itself --
> for example, when I execute the following elisp, I get the same blank
> box:
After doing some reading, I learned that image.el doesn't really create
the image. Instead, create-image simply creates a blank string with a
text property pointing to the image file location, and the rendering of
the image gets handled later by the C code (for example, png_load_body()
in image.c), which doesn't know how to read remote image files.
Since I wasn't comfortable trying to get the C code to read the remote
file, I instead took the approach used by image-mode.el, which reads the
remote image file and passes its contents directly to create-image,
instead of just passing the filename.
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[-- Attachment #2: 0001-org-display-remote-images.patch --]
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From 47120666dad6eb0b6ca716325d7de86924e1d28e Mon Sep 17 00:00:00 2001
From: Jack Kamm <jackkamm@gmail.com>
Date: Thu, 28 Nov 2019 17:45:56 -0800
Subject: [PATCH] org: display remote images
---
lisp/org.el | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/lisp/org.el b/lisp/org.el
index 90f222c8b..dc7bcc7aa 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -16754,13 +16754,20 @@ buffer boundaries with possible narrowing."
(t nil)))
(old (get-char-property-and-overlay
(org-element-property :begin link)
- 'org-image-overlay)))
+ 'org-image-overlay))
+ (remote-p (file-remote-p file)))
(if (and (car-safe old) refresh)
(image-refresh (overlay-get (cdr old) 'display))
- (let ((image (create-image file
+ (let ((image (create-image (if (not remote-p)
+ file
+ (with-temp-buffer
+ (insert-file-contents file)
+ (string-make-unibyte
+ (buffer-substring-no-properties
+ (point-min) (point-max)))))
(and (image-type-available-p 'imagemagick)
width 'imagemagick)
- nil
+ remote-p
:width width)))
(when image
(let ((ov (make-overlay
--
2.24.0
next prev parent reply other threads:[~2019-11-29 2:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-28 17:09 Displaying remote images Jack Kamm
2019-11-28 21:50 ` briangpowell .
2019-11-29 1:39 ` Jack Kamm
2019-11-29 2:00 ` Jack Kamm [this message]
2019-11-29 5:36 ` briangpowell .
2019-12-02 20:27 ` Nick Dokos
2019-12-02 22:39 ` briangpowell .
2019-12-07 14:41 ` Jack Kamm
2020-01-19 22:17 ` Jack Kamm
2020-01-21 16:39 ` Nicolas Goaziou
2020-01-22 15:31 ` stardiviner
2020-01-25 0:28 ` Jack Kamm
2020-02-01 10:51 ` Nicolas Goaziou
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