From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Elisp and overlay, how to show an image Date: Sun, 07 Jul 2024 09:12:48 -0400 Message-ID: References: <8734omfcnc.fsf@k-7.ch> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="15106"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:fJgo44ZygCOE7Lc336JlT36Pz8M= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jul 07 15:13:28 2024 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sQRhn-0003o5-FY for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 07 Jul 2024 15:13:27 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sQRhK-0006lL-IG; Sun, 07 Jul 2024 09:12:58 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sQRhJ-0006lD-De for help-gnu-emacs@gnu.org; Sun, 07 Jul 2024 09:12:57 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sQRhH-0007jF-Te for help-gnu-emacs@gnu.org; Sun, 07 Jul 2024 09:12:57 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1sQRhG-00035u-0k for help-gnu-emacs@gnu.org; Sun, 07 Jul 2024 15:12:54 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:147098 Archived-At: > Here is the source code my first try: > > ;; Create an overlay at the first char of the buffer > (setq ov1 (make-overlay 1 1)) Please use (point-min) rather than 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) As Tomas points out, the `display` property is obeyed only if it covers characters. The usual way to "insert" an image without disrupting the content of the buffer (e.g. in `put-image`) is to put the image (with `display` property) on a *string* and then put that string in the `before-string` (or `after-string`) property of an overlay. (let ((ol (put-image (create-image "~/Path/to/my/image.jpg") (point-min)))) (overlay-put ol 'after-string "\n")) - Stefan