From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jarmo Hurri <jarmo.hurri@iki.fi>
Subject: Re: Scaling HTML-exported SVG
Date: Sun, 24 Jul 2016 21:48:12 +0300
Message-ID: <878twqq3df.fsf@iki.fi>
References: <87y44tx1h5.fsf@iki.fi> <m260rvt126.fsf@christianmoe.com>
	<87y44qdipu.fsf@iki.fi>
Mime-Version: 1.0
Content-Type: text/plain
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:59713)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1bRORs-0001mu-Sr
	for emacs-orgmode@gnu.org; Sun, 24 Jul 2016 14:48:28 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1bRORp-00074h-1P
	for emacs-orgmode@gnu.org; Sun, 24 Jul 2016 14:48:24 -0400
Received: from plane.gmane.org ([80.91.229.3]:51664)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1bRORo-00074A-QF
	for emacs-orgmode@gnu.org; Sun, 24 Jul 2016 14:48:20 -0400
Received: from list by plane.gmane.org with local (Exim 4.69)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1bRORn-0000pP-Gt
	for emacs-orgmode@gnu.org; Sun, 24 Jul 2016 20:48:19 +0200
Received: from 82-181-168-52.bb.dnainternet.fi ([82.181.168.52])
	by main.gmane.org with esmtp (Gmexim 0.1 (Debian))
	id 1AlnuQ-0007hv-00
	for <emacs-orgmode@gnu.org>; Sun, 24 Jul 2016 20:48:19 +0200
Received: from jarmo.hurri by 82-181-168-52.bb.dnainternet.fi with local
	(Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00
	for <emacs-orgmode@gnu.org>; Sun, 24 Jul 2016 20:48:19 +0200
List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/emacs-orgmode/>
List-Post: <mailto:emacs-orgmode@gnu.org>
List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=subscribe>
Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
Sender: "Emacs-orgmode"
	<emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
To: emacs-orgmode@gnu.org

Jarmo Hurri <jarmo.hurri@iki.fi> writes:

> Christian Moe <mail@christianmoe.com> writes:
>>   #+html_head_extra: <style>#svgfig {width: 200px; }</style>
>>
>>   #+attr_html: :id svgfig
>>   [[path/to/image.svg]]
>>
>> For this to work, the SVG needs to be written to be scalable (with
>> viewport set etc.).
>
> (Also addressed this in the other thread; also here for completeness.)
>
> But this means scaling on a file-by-file basis, which is very
> inconvenient for any larger projects.

Did some tests.

The method you suggested above - setting id - works (all tests done in
Chrome). But setting id-values is cumbersome, because you need to do it
for every file.

It is also possible to set a CSS class similarly, that is, modifying
your example above,

#+html_head_extra: <style>.svgfig {width: 200px; }</style>

#+attr_html: :class svgfig
[[path/to/image.svg]]

This also works and is better, because then it is possible to set a
common class for all SVG figures, and handle them with a single CSS
rule. Better, but not yet perfect, because I still need to add a
attr_html to every SVG figure.

But there seems to be a way around this. With the last approach the
generated HTML looks something like

<object type="image/svg+xml" data="image.svg" class="svgfig">

Why don't we just set a common class for all SVG-images in an HTML
export by default? Then we could still use an <object> to embed it, and
control its size from CSS.

It seems to me that this solves the problem, and requires an extremely
small change.

Jarmo