Indeed, this seems to be a bug in the handling of
image sizing attributes in html/graphics.xsl. The result is an img with
height="", which browsers interpret as zero height it seems. Could you
please file a bug report on the DocBook SourceForge site so this can get tracked
and fixed?
Bob Stayton
Sagehill Enterprises
DocBook Consulting
----- Original Message -----
From:
Chris Borg
To: 'Bob Stayton'
Cc:
Sent: Friday, March 02, 2007 2:33
AM
Subject: RE: [docbook-apps] intrinsic
size of images
Hi,
I was following this thread as I was working with
image sizing at the time. I changed the attribute contentheight to
contentdepth as per the comments. This removed a validation error I was
receiving (Attribute "contentheight" must be declared for element type
"imagedata"). However, I encountered problems with images not displaying
in HTML (ok in PDF). It seems
contentdepth has a problem when used with the param ignore.image.scaling
(set to non-zero) in my customization layer (chunk) . I did notice that images
that don't have attributes are displayed e.g. those attached to the
<note> tag still displayed in HTML.
Using contentdepth and setting ignore.image.scaling"
select="'0'" displays the image HTML (but not very nicely though). As a result
I am currently setting
ignore.image.scaling to non-zero and use the attribute contentheight as this gives the
required output. However, I still left with a validation error.
I am
a newbie to Docbook so may be in error or mis-understanding but something
doesn't seem quite right.
Thanks....
Chris
-----Original Message-----
From: Bob Stayton
[mailto:]
Sent: 18 February 2007
06:44
To: Hinrich Aue;
Subject: Re: [docbook-apps]
intrinsic size of images
I found the problem by validating a sample file
with the attributes you were trying to use. The description in my book
has a typo. Where it says contentheight, the attribute name is actually
contentdepth in DocBook. When I validated, it pointed out that I had an
invalid attribute.
If you are using FOP 0.93, then it works with the
right attribute name. If you are using FOP 0.20.5, it is a known problem
that it does not handle image scaling correctly.
Bob Stayton
Sagehill Enterprises
DocBook Consulting
----- Original Message -----
From:
Hinrich Aue
To:
Sent: Friday, February 16, 2007 2:16
AM
Subject: AW: [docbook-apps] intrinsic
size of images
Hello again,
but I was not specific
enough.
I'm trying to get the exact behaviour described
at
http://www.sagehill.net/docbookxsl/ImageSizing.html
> To keep a graphic for printed output at its
natural size unless it is too
> large to fit the available width, in which case
shrink it to fit, use
> scalefit="1", width="100%", and
contentheight="100%" attributes.
I tried nearly every combination
of
Width
Contentheight
Scalefit
But it does not work.
When I use
> scalefit="1", width="100%", and
contentheight="100%" attributes.
Then the images are scaled
wrong.
But I cannot figure out wich part is
wrong
Xsltproc, Fop or my brain? (most likely my brain,
I'm stuck)
What works for me now
is:
Use no attributes for small images - works
fine
Use width=100% attributes for images too big for the
pdf page - images are scaled to the right size.
Thanks,
Hinrich
