From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Several suggestions for image support Date: 18 Apr 2004 21:51:05 -0400 Sender: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Message-ID: <87zn98ybzl.fsf-monnier+emacs@gnu.org> References: NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1082339676 3447 80.91.224.253 (19 Apr 2004 01:54:36 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Mon, 19 Apr 2004 01:54:36 +0000 (UTC) Cc: David Kastrup , rms@gnu.org, emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Mon Apr 19 03:54:30 2004 Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1BFNzS-0005s8-00 for ; Mon, 19 Apr 2004 03:54:30 +0200 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.35 #1 (Debian)) id 1BFNzS-0003MP-00 for ; Mon, 19 Apr 2004 03:54:30 +0200 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.30) id 1BFNxk-0004Tt-1o for emacs-devel@quimby.gnus.org; Sun, 18 Apr 2004 21:52:44 -0400 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.30) id 1BFNxO-0004Ny-AI for emacs-devel@gnu.org; Sun, 18 Apr 2004 21:52:22 -0400 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.30) id 1BFNwi-00044T-1O for emacs-devel@gnu.org; Sun, 18 Apr 2004 21:52:12 -0400 Original-Received: from [209.226.175.34] (helo=tomts13-srv.bellnexxia.net) by monty-python.gnu.org with esmtp (Exim 4.30) id 1BFNwC-0003m8-7S; Sun, 18 Apr 2004 21:51:08 -0400 Original-Received: from alfajor ([67.71.118.142]) by tomts13-srv.bellnexxia.net (InterMail vM.5.01.06.05 201-253-122-130-105-20030824) with ESMTP id <20040419015102.LOBP6153.tomts13-srv.bellnexxia.net@alfajor>; Sun, 18 Apr 2004 21:51:02 -0400 Original-Received: by alfajor (Postfix, from userid 1000) id 1ACD8D7633; Sun, 18 Apr 2004 21:51:06 -0400 (EDT) Original-To: storm@cua.dk (Kim F. Storm) In-Reply-To: Original-Lines: 18 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.4 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Xref: main.gmane.org gmane.emacs.devel:21863 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:21863 >> Of course, scrolling through large images should be possible, anyway, >> and quite independent from that fanciful features. Emacs already has >> set-window-vscroll in its display engine in order to deal perfectly >> well with that. > Yes, and it could probably be done entirely in lisp !? I already suggested to use two new primitives (that have incidentally been requested for other purpose): point-to-pixel and pixel-to-point which turn a (displayed) buffer position into a display position and vice versa. All the rest should then be reasonably easy to do in Elisp. Stefan