[Libreoffice] [Patch] Export object's title and description as alternate content

[KUROSAWA, Takeshi]

Hi,

Here is a patch to make SVG filter export object's title and
description as alternate content
i.e. title and description element.
http://www.w3.org/TR/SVG/struct.html#DescriptionAndTitleElements

Currently the filter uses fixed texts such as "Drawing" and "Graphic"
as alternate content.
However they doesn't provide meaningful information.
# It is obvious that contents of a SVG file are "Drawing" or "Graphic".

LibreOffice stores title and description for each object, we can use it.
Actually they are stored as "svg:title" and "svg:description" in ODF.

Fixed text  is information about class of a shape. Thus use them as
class attribute.

The patch is under LGPLv3/MPL.

Cheers,
--
Kurosawa Takeshi <taken.spc at gmail.com>
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