From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Carlos Aguilar Newsgroups: gmane.emacs.devel Subject: Suggestion / feature request Date: Thu, 19 Apr 2012 15:28:51 +0200 Message-ID: <4F901313.5040804@unilim.fr> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="------------010008050008030601030800" X-Trace: dough.gmane.org 1334842150 25960 80.91.229.3 (19 Apr 2012 13:29:10 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 19 Apr 2012 13:29:10 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Apr 19 15:29:07 2012 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1SKrQ2-00038B-Uj for ged-emacs-devel@m.gmane.org; Thu, 19 Apr 2012 15:29:07 +0200 Original-Received: from localhost ([::1]:38617 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKrQ2-0002zo-Al for ged-emacs-devel@m.gmane.org; Thu, 19 Apr 2012 09:29:06 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:48893) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKrPu-0002wB-7U for emacs-devel@gnu.org; Thu, 19 Apr 2012 09:29:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SKrPn-0006qw-TN for emacs-devel@gnu.org; Thu, 19 Apr 2012 09:28:57 -0400 Original-Received: from mail.unilim.fr ([164.81.1.45]:37903 helo=smtp.unilim.fr) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SKrPn-0006qb-Ig for emacs-devel@gnu.org; Thu, 19 Apr 2012 09:28:51 -0400 Original-Received: from [164.81.39.165] ([164.81.39.165]) (authenticated bits=0) by smtp.unilim.fr (8.13.1/8.13.1) with ESMTP id q3JDSlVI003951 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 19 Apr 2012 15:28:47 +0200 User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.28) Gecko/20120313 Lightning/1.0b2 Thunderbird/3.1.20 X-Univ-Limoges-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.3 (smtp.unilim.fr [164.81.1.45]); Thu, 19 Apr 2012 15:28:48 +0200 (CEST) X-Univ-Limoges-MD: Pas de virus trouve X-Scanned-By: MIMEDefang 2.67 on 164.81.1.45 X-Univ-Limoges-MailScanner-Information: Serveur Anti-virus Please contact postmaster@unilim.fr for more information X-Univ-Limoges-MailScanner-ID: q3JDSlVI003951 X-Univ-Limoges-MailScanner: Found to be clean X-Univ-Limoges-MailScanner-Envelope-From: carlos.aguilar@unilim.fr X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) X-Received-From: 164.81.1.45 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:149816 Archived-At: This is a multi-part message in MIME format. --------------010008050008030601030800 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi everybody, I am a heavy user of doc-view mode and more generally of emacs, so first of all big thanks to all the developers for their contributions to this unique piece of software. I write to the list to ask whether an idea I have had could be implemented and/or would be useful. I often use doc-view mode with medium to large pdf/ps/dvi files, when writing/modifying latex documents. Whether these are slides or a document with or without chapters, my modification often just change a small amount of pages. This is almost always the case for slides as they are independent. For documents there are changes typically in the last page in small documents, or those between the point in which I am and the end of the associated chapter. As the conversion process creates an image for every page in each iteration most of the processing is useless (it regenerates images of pages that already exist). I wondered if it would be possible to keep a set of signatures of the pdf/ps/dvi pages processed so that those that are unchanged are not reconverted to (already existing) bitmap images. Best, Carlos Aguilar --------------010008050008030601030800 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi everybody,
I am a heavy user of doc-view mode and more generally of emacs, so first of all big thanks to all the developers for their contributions to this unique piece of software.

I write to the list to ask whether an idea I have had could be implemented and/or would be useful.

I often use doc-view mode with medium to large pdf/ps/dvi files, when writing/modifying latex documents. Whether these are slides or a document with or without chapters, my modification often just change a small amount of pages. This is almost always the case for slides as they are independent. For documents there are changes typically in the last page in small documents, or those between the point in which I am and the end of the associated chapter. As the conversion process creates an image for every page in each iteration most of the processing is useless (it regenerates images of pages that already exist).

I wondered if it would be possible to keep a set of signatures of the pdf/ps/dvi pages processed so that those that are unchanged are not reconverted to (already existing) bitmap images.

Best,

Carlos Aguilar
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