Re: [docbook-apps] Watermark Images

[Tony Graham <tgraham@antenna.co.jp>]

On 01/07/2018 16:43, Bob Stayton wrote:
...
> Since you want your image to appear on every page, it cannot be part
> of the content and must be part of the page declaration.  But content
> for the page declaration only appears in the margin regions, as
> header or footer, or side margin navigational content.  It might be
> possible to declare a full size image in one of those areas but
> extending out side the designated area, but I'm not sure if it would
> be under or over the page content.

It depends.  The approach should get you the page-size image, but
whether or not the watermark is on top of the rest depends on the formatter.

The order of the FOs for the page regions in the XSL-FO document is
defined by the XSL 1.1 specification, but the rendering order of the
page regions not defined -- and 'z-index' does not apply -- so you're
left with what the formatter implements.

AH Formatter allows you to put the FOs for the page regions in any
sequence and will render them in that sequence.  See:

https://www.antennahouse.com/product/ahf65/ahf-ext.html#ext-others

So if you're using AH Formatter, just put the FO for outer region to
which you will direct the watermark after the fo:region-body FO.

But if you're using AH Formatter, then you can specify up to two sets of
watermark text in the Option Setting File that AH Formatter uses.  See:

https://www.antennahouse.com/product/ahf65/ahf-optset.html#watermark-text

Regards,

Tony Graham
Senior Architect
XML Division
Antenna House, Inc.
----
Skerries, Ireland
tgraham@antenna.co.jp