Re: DOCBOOK-APPS: Re: DOCBOOK: Efficiently including images in DocBook

[Nik Clayton <nik at nothing-going-on dot demon dot co dot uk>]

On Wed, Oct 11, 2000 at 07:51:58AM -0400, Norman Walsh wrote:
> / Nik Clayton <nik@nothing-going-on.demon.co.uk> was heard to say:
> | in a file (call it foo.pdf) and then doing
> | 
> |    cp foo.def book.tex
> |    jade -Vtex-backend .... -t tex -o /dev/stdout book.sgml >> book.tex
> | 
> | which seems to have the desired effect.
> 
> Ok, then I can call the issue closed. Yes?

Depends.  I can now do:

    <mediaobject>
      <imageobject>
        <imagedata fileref="fig1">
      </imageobject>
        
      <textobject>
        <literallayout>+---------------+
|       A       |
+---------------+</literallayout>
      </textobject>

      <textobject>
        <phrase>A picture</phrase>
      </textobject>
    </mediaobject>

However, in order to do that, I must define a %output.html.images entity,
and do

   <![ %output.html.images; [
     (define %graphic-default-extension% "png")
   ]]>

and also a %output.print entity, and do

   <![ %output.print; [

     ;; Norm's stylesheets are smart about working out what sort of
     ;; object to display.  But this bites us.  Since we know that the
     ;; first item is going to be displayable, always use that.
     (define (find-displayable-object objlist notlist extlist)
       (let loop ((nl objlist))
         (if (node-list-empty? nl)
           (empty-node-list)
             (let* ((objdata  (node-list-filter-by-gi
                               (children (node-list-first nl))
                               (list (normalize "videodata")
                                     (normalize "audiodata")
                                     (normalize "imagedata"))))
                    (filename (data-filename objdata))
                    (extension (file-extension filename))
                    (notation (attribute-string (normalize "format") objdata)))
               (node-list-first nl)))))

     ;; When selecting a filename to use, don't append the default
     ;; extension, instead, just use the bare filename, and let TeX
     ;; work it out.  jadetex will use the .eps file, while pdfjadetex
     ;; will use the .png file automatically.
     (define (graphic-file filename)
       (let ((ext (file-extension filename)))
         (if (or tex-backend   ;; TeX can work this out itself
                 (not filename)
                 (not %graphic-default-extension%)
                 (member ext %graphic-extensions%))
              filename
              (string-append filename "." %graphic-default-extension%))))


   ]]>

And then use Jade's -i option depending on which format we're building.
Incidentally, my DSSSL probably sucks :-)

So it's possible, but it's not exactly supported out of the box.

N
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