From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: YAMAMOTO Mitsuharu Newsgroups: gmane.emacs.devel Subject: Re: [PATCH 1/2] image: add support for GIF transparency Date: Thu, 04 Nov 2010 10:44:36 +0900 Organization: Faculty of Science, Chiba University Message-ID: References: <1288191651-3958-1-git-send-email-julien@danjou.info> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII X-Trace: dough.gmane.org 1288835096 31973 80.91.229.12 (4 Nov 2010 01:44:56 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 4 Nov 2010 01:44:56 +0000 (UTC) Cc: emacs-devel@gnu.org To: Julien Danjou Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Nov 04 02:44:50 2010 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PDosk-0005DN-KH for ged-emacs-devel@m.gmane.org; Thu, 04 Nov 2010 02:44:50 +0100 Original-Received: from localhost ([127.0.0.1]:59199 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PDosk-0006aB-13 for ged-emacs-devel@m.gmane.org; Wed, 03 Nov 2010 21:44:50 -0400 Original-Received: from [140.186.70.92] (port=45970 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PDosc-0006Z8-Ec for emacs-devel@gnu.org; Wed, 03 Nov 2010 21:44:43 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PDosb-0001jL-1F for emacs-devel@gnu.org; Wed, 03 Nov 2010 21:44:42 -0400 Original-Received: from mathmail.math.s.chiba-u.ac.jp ([133.82.132.2]:53560) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PDosa-0001j0-Lw for emacs-devel@gnu.org; Wed, 03 Nov 2010 21:44:40 -0400 Original-Received: from church.math.s.chiba-u.ac.jp (church [133.82.132.36]) by mathmail.math.s.chiba-u.ac.jp (Postfix) with ESMTP id 505B8C055D; Thu, 4 Nov 2010 10:44:36 +0900 (JST) In-Reply-To: <1288191651-3958-1-git-send-email-julien@danjou.info> User-Agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (=?ISO-8859-4?Q?Shij=F2?=) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI) X-detected-operating-system: by eggs.gnu.org: NetBSD 3.0 (DF) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:132339 Archived-At: >>>>> On Wed, 27 Oct 2010 17:00:50 +0200, Julien Danjou said: > + if (transparent_p && transparency_color_index == i) > + pixel_colors[i] = FRAME_BACKGROUND_PIXEL (f); If we don't have multiple transparency levels in GIF (unlike PNG or SVG), then we can construct a clipping mask as we currently do in XPM, and that would give us a better result. YAMAMOTO Mitsuharu mituharu@math.s.chiba-u.ac.jp