From: "Sébastien Gendre" <seb@k-7.ch>
To: Help Gnu Emacs Mailing List <help-gnu-emacs@gnu.org>
Subject: Elisp and overlay, how to show an image
Date: Sat, 06 Jul 2024 23:12:23 +0200 [thread overview]
Message-ID: <8734omfcnc.fsf@k-7.ch> (raw)
Hello,
I am trying to show an image on the top of a buffer, before the first
line of text, and put a small margin at the bottom of the image.
I have read the Overlay manual [1] and the source code of the function
`org-display-inline-images`, but I have difficulties to understand how
to use overlay beginning and end parameters.
Here is the source code my first try:
;; Create an overlay at the first char of the buffer
(setq ov1 (make-overlay 1 1))
;; Create the image from a file
(setq my_image (create-image "~/Path/to/my/image.jpg"))
;; Put a new line, to avoid aving the image replacing the first char
(overlay-put ov1 'before-string "\n")
;; Put the image on the overlay
(overlay-put ov1 'display my_image)
When I evaluate this code, for example on the *scratch* buffer, I got a
new line before the first buffer char, but the image do not display.
Should I need to create, on the overlay, an empty space big enough to
put the image in it ? Or did I miss something on the manual ?
Best regards.
[1] https://www.gnu.org/software/emacs/manual/html_node/elisp/Overlays.html
next reply other threads:[~2024-07-06 21:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-06 21:12 Sébastien Gendre [this message]
2024-07-07 5:30 ` Elisp and overlay, how to show an image tomas
2024-07-07 13:12 ` Stefan Monnier via Users list for the GNU Emacs text editor
2024-07-07 15:31 ` Sébastien Gendre
2024-07-07 19:05 ` Stefan Monnier via Users list for the GNU Emacs text editor
2024-07-08 0:20 ` Michael Heerdegen via Users list for the GNU Emacs text editor
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