From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: [PATCH] system: grub: Convert grub background using rsvg-convert
Date: Thu, 27 Aug 2015 23:19:50 +0200
Message-ID: <87twrkwhs9.fsf@gnu.org>
References: <87egitx3r7.fsf@netris.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Return-path: <guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:44626)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1ZV4aZ-0001d8-OU
	for guix-devel@gnu.org; Thu, 27 Aug 2015 17:20:07 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <ludo@gnu.org>) id 1ZV4aZ-0002gt-3N
	for guix-devel@gnu.org; Thu, 27 Aug 2015 17:20:03 -0400
In-Reply-To: <87egitx3r7.fsf@netris.org> (Mark H. Weaver's message of "Sun, 23
	Aug 2015 14:23:56 -0400")
List-Id: "Development of GNU Guix and the GNU System distribution."
	<guix-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/guix-devel>
List-Post: <mailto:guix-devel@gnu.org>
List-Help: <mailto:guix-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=subscribe>
Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
Sender: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
To: Mark H Weaver <mhw@netris.org>
Cc: guix-devel@gnu.org, Luis Felipe =?utf-8?Q?L=C3=B3pez?= Acevedo <felipe.lopez@openmailbox.org>

Mark H Weaver <mhw@netris.org> skribis:

> This patch modifies 'svg->png' in (gnu system grub) to use rsvg-convert
> instead of inkscape.  Inkscape is a rather heavy dependency to convert
> an image.  This is important for users who choose to avoid binary
> substitutes.

Good idea.

> The main difficulty here was that our SVG artwork is partially
> transparent, and includes a "Background" layer with a checker-board
> pattern.  I guess this layer is for convenience when editing in
> Inkscape, and apparently Inkscape excludes the "Background" layer when
> exporting to png.  Other tools render all layers.  Therefore, avoiding
> Inkscape required code to remove that layer before conversion to png.

Fun.  :-)

If possible, I would rather remove said layer directly in the
guix-artwork repo, or somehow make that layer invisible to
rsvg-convert.  Luis Felipe: What=E2=80=99s your take on this?

Thanks,
Ludo=E2=80=99.