From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Emacs canvas support Date: Thu, 30 Apr 2020 20:30:31 +0300 Message-ID: <83sggkx4nc.fsf@gnu.org> 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> <20200429171619.GB20842@tuxteam.de> <83imhixkva.fsf@gnu.org> <83h7x2xke8.fsf@gnu.org> <83v9lhvyy8.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="94453"; mail-complaints-to="usenet@ciao.gmane.io" Cc: tomas@tuxteam.de, emacs-devel@gnu.org To: Arthur Miller Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Apr 30 19:31:27 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 1jUD1z-000OVs-Fz for ged-emacs-devel@m.gmane-mx.org; Thu, 30 Apr 2020 19:31:27 +0200 Original-Received: from localhost ([::1]:40892 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jUD1y-0006Lj-Fo for ged-emacs-devel@m.gmane-mx.org; Thu, 30 Apr 2020 13:31:26 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58480) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jUD1L-0005O2-Nc for emacs-devel@gnu.org; Thu, 30 Apr 2020 13:30:48 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:54351) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jUD1K-0002LP-G1; Thu, 30 Apr 2020 13:30:46 -0400 Original-Received: from [176.228.60.248] (port=3084 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jUD1J-0003ux-IX; Thu, 30 Apr 2020 13:30:46 -0400 In-Reply-To: (message from Arthur Miller on Thu, 30 Apr 2020 16:58:10 +0200) 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:248252 Archived-At: > From: Arthur Miller > Cc: tomas@tuxteam.de, emacs-devel@gnu.org > Date: Thu, 30 Apr 2020 16:58:10 +0200 > > > For example, if the window scrolls, wouldn't you want > > the graphics drawn by these pre/post-renderers to move on display as > > well, at least sometimes? If you do, how can you do that without > > knowing some details about the scroll? > Of course. Wouldn't came out automatically, by redisplay engine as it > already is? No, of course not. > No I didn't, I had in mind to redraw stuff, so user can draw below or > above whatever Emacs normally draws. > > Yeah sure if user chooses to draw two different text buffers on top of > each other it would be a mess, but I don't think that is an issue > because, normally, probably nobody want's to draw to text files on top > of each other. I think what you describe doesn't fit with how the redisplay works, but I'm probably missing something, since Stefan also thinks this could work.