Re: [docbook-apps] intrinsic size of images

Try the latest docbook-xsl-snapshot.  The fix 
should be in there to not output an empty height attribute.

 

Bob Stayton
Sagehill Enterprises
DocBook Consulting


 

 

  
----- Original Message ----- 

  
From: 
  Chris Borg 

  
To: 'Bob Stayton' 

  
Cc:  
  

  
Sent: Tuesday, March 06, 2007 8:45 
  AM

  
Subject: RE: [docbook-apps] intrinsic 
  size of images

  

  

  
Hi,

  
 

  
I 
  created myself an account on docbook sourceforge and submitted a bug 
  report.

  
 

  
What do you think the best way to 
  proceed is in the mean time? Continue using contentheight (with validation 
  error) or stop using ignore.image.scaling and specify sizing 
  attributes for each HTML image?

  
 

  
Regards

  
 

  
-----Original Message-----
From: Bob Stayton 
  [mailto:]
Sent: 03 March 2007 08:00
To: 
  Chris Borg
Cc: 
Subject: 
  Re: [docbook-apps] intrinsic size of images

  
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