From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Newsgroups: gmane.emacs.devel Subject: Re: Emacs canvas support Date: Wed, 29 Apr 2020 19:16:19 +0200 Message-ID: <20200429171619.GB20842@tuxteam.de> References: <875zdikdge.fsf.ref@yahoo.com> <875zdikdge.fsf@yahoo.com> <834kt21yyo.fsf@gnu.org> <87zhau1uog.fsf@yahoo.com> <83sggmzjp8.fsf@gnu.org> <87mu6u1tii.fsf@yahoo.com> <83o8raziis.fsf@gnu.org> <877dxy1smz.fsf@yahoo.com> <87o8rae0ao.fsf@randomsample> <83lfmexmfp.fsf@gnu.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="nVMJ2NtxeReIH9PS" Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="110507"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/1.5.21 (2010-09-15) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Apr 29 19:17:00 2020 Return-path: Envelope-to: ged-emacs-devel@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 1jTqKR-000SbS-47 for ged-emacs-devel@m.gmane-mx.org; Wed, 29 Apr 2020 19:16:59 +0200 Original-Received: from localhost ([::1]:38370 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jTqKQ-0002AI-4q for ged-emacs-devel@m.gmane-mx.org; Wed, 29 Apr 2020 13:16:58 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:54338) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jTqJr-0001jM-Fs for emacs-devel@gnu.org; Wed, 29 Apr 2020 13:16:23 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jTqJq-0002NP-Pu for emacs-devel@gnu.org; Wed, 29 Apr 2020 13:16:23 -0400 Original-Received: from mail.tuxteam.de ([5.199.139.25]:59406) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.90_1) (envelope-from ) id 1jTqJp-0002EQ-Tp for emacs-devel@gnu.org; Wed, 29 Apr 2020 13:16:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tuxteam.de; s=mail; h=From:In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:To:Date; bh=zyeQGXStW6D/lMYQsScZZsl/Oc0hwN0WtA/j+D2YvPg=; b=nA1cfLIMHPzmDHukMpoh0+LnTjJLECvMD+JWWvX2uXel9NX5n3usYEOR6MURkgHPsxjUwb15Ti5eDOUAxNjo+KrHz917Q6tCKVEMwXT9/+wh0XpL/ZpSBAS0MCuQ9QSxJYUzPwfUEuEqHSC+9UBKCMKcsooyUge+mItl9Buagiu9UfJeqWiUuSJdtC+EdLeOtUS512SdcJgF9FagZZSyMD3hEHehdporx7xbwB9pSfl8QMWsFaUVJMVQC491Nz6I5w7H7jdIrFV5xNdT9QYb0l4haGfIBHnuPcEExecCtbe9ycEIEhELFGqynVVDQNIXxxU7ryUvyw+qzLbOuQ8OWw==; Original-Received: from tomas by mail.tuxteam.de with local (Exim 4.80) (envelope-from ) id 1jTqJn-0006LY-Hu for emacs-devel@gnu.org; Wed, 29 Apr 2020 19:16:19 +0200 Content-Disposition: inline In-Reply-To: <83lfmexmfp.fsf@gnu.org> Received-SPF: pass client-ip=5.199.139.25; envelope-from=tomas@tuxteam.de; helo=mail.tuxteam.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/29 13:16:20 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Received-From: 5.199.139.25 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:248167 Archived-At: --nVMJ2NtxeReIH9PS Content-Type: text/plain; charset=utf-8 Content-Disposition: inline On Wed, Apr 29, 2020 at 07:54:02PM +0300, Eli Zaretskii wrote: [...] > Drawing over normal text, if we don't want to redesign the entire > display engine, needs some new kind of "display element" ( a sibling > to "character", "image", "stretch", etc.), one that doesn't > necessarily have any effect on the metrics of the screen lines it is > drawn upon. I'm not sure I have a clear idea about what features such > a drawing will need to support, but it could be possible to add such > an element with not too much effort. Would someone want to come up > with a reasonable list of requirements for such a feature? That sounds... exciting. Basically, Emacs would have to have a "display list" of graphical elements to draw, each one perhaps having a bounding box (to discard those from redisplay which aren't currently visible) and perhaps a "layer" (more to the background or foreground). Hmmm. Cheers -- t --nVMJ2NtxeReIH9PS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAl6ptmMACgkQBcgs9XrR2kb23QCeLdyEo4fuGqmA8FZFXWJfRofc HikAn1CQ+bIaWrgXu+1ZgzokZFSY9PLn =0A3F -----END PGP SIGNATURE----- --nVMJ2NtxeReIH9PS--