From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Tomas Hlavaty Newsgroups: gmane.emacs.help Subject: Re: make a drawing with Emacs Date: Thu, 03 Sep 2020 10:03:17 +0200 Message-ID: <87d033s2wq.fsf@logand.com> References: <20200901145854.GF15433@tuxteam.de> <87sgbzsx4q.fsf@logand.com> <20200903071405.GA5650@tuxteam.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="403"; mail-complaints-to="usenet@ciao.gmane.io" To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Sep 03 10:03:46 2020 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 1kDkDh-000AXq-Cp for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 03 Sep 2020 10:03:45 +0200 Original-Received: from localhost ([::1]:48986 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kDkDg-0007nZ-E5 for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 03 Sep 2020 04:03:44 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46630) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kDkDM-0007mB-28 for help-gnu-emacs@gnu.org; Thu, 03 Sep 2020 04:03:24 -0400 Original-Received: from logand.com ([37.48.87.44]:35728) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kDkDK-00064U-8P for help-gnu-emacs@gnu.org; Thu, 03 Sep 2020 04:03:23 -0400 Original-Received: by logand.com (Postfix, from userid 1001) id 48E611A4B08; Thu, 3 Sep 2020 10:03:20 +0200 (CEST) X-Mailer: emacs 26.3 (via feedmail 11-beta-1 I) In-Reply-To: <20200903071405.GA5650@tuxteam.de> Received-SPF: pass client-ip=37.48.87.44; envelope-from=tom@logand.com; helo=logand.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/03 03:34:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] 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, SPF_HELO_PASS=-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: 2.1.23 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" Xref: news.gmane.io gmane.emacs.help:123924 Archived-At: On Thu 03 Sep 2020 at 09:14, wrote: > On Wed, Sep 02, 2020 at 11:10:29PM +0200, Tomas Hlavaty wrote: >> >> That might be an emacs-nox thing, perhaps? >> > >> > Your Emacs has to be able to display svg images. >> >> It is a shame that image code in emacs is completely dependent on unsafe >> foreign libraries and tightly coupled with graphics toolkits. > > I think there is a misunderstanding. All the functions in 'svg > basically do what you sketch in your mail (i.e. manipulate a dom > as an abstract data structure with an XML representation: so > basically generate and serialize XML) and don't rely on librsvg > et al. (I guess that is what you chastise as "unsafe foreign > library"). Not true. For example svg-image does rely on librsvg. There might be other functions but I don't know that and there is no easy way to find out except reading all that source code. > How does the emacs framebuffer work? Can it display images as > parts of a regular Emacs buffer? Based on where the buffer is on the screen it calculates where to draw the image on the Linux framebuffer. Then it works like w3m web browser.