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;; $Id: dbgraph.dsl,v 1.8 1998/09/03 15:58:01 nwalsh Exp $
;;
;; This file is part of the Modular DocBook Stylesheet distribution.
;; See ../README or http://www.berkshire.net/~norm/dsssl/
;;
;; ==================== GRAPHICS ====================
;; NOTE: display #f doesn't seem to work right in the RTF back end...
(define (graphic-file filename)
(let ((ext (file-extension filename)))
(if (or (not filename)
(not %graphic-default-extension%)
(member ext %graphic-extensions%))
filename
(string-append filename "." %graphic-default-extension%))))
(define ($graphic$ fileref
#!optional (display #f) (format #f) (scale #f) (align #f))
(let ((graphic-format (if format format ""))
(graphic-scale (if scale (/ (string->number scale) 100) 1))
(graphic-align (cond ((equal? align (normalize "center"))
'center)
((equal? align (normalize "right"))
'end)
(else
'start))))
(make external-graphic
entity-system-id: (graphic-file fileref)
notation-system-id: graphic-format
scale: graphic-scale
display?: display
display-alignment: graphic-align)))
(define ($img$ #!optional (nd (current-node)) (display #f))
;; This function now supports an extension to DocBook. It's
;; either a clever trick or an ugly hack, depending on your
;; point of view, but it'll hold us until XLink is finalized
;; and we can extend DocBook the "right" way.
;;
;; If the entity passed to GRAPHIC has the FORMAT
;; "LINESPECIFIC", either because that's what's specified or
;; because it's the notation of the supplied ENTITYREF, then
;; the text of the entity is inserted literally (via Jade's
;; read-entity external procedure).
;;
(let* ((fileref (attribute-string (normalize "fileref") nd))
(entityref (attribute-string (normalize "entityref") nd))
(format (if (attribute-string (normalize "format") nd)
(attribute-string (normalize "format") nd)
(if entityref
(entity-notation entityref)
#f)))
(align (attribute-string (normalize "align") nd))
(scale (attribute-string (normalize "scale") nd)))
(if (or fileref entityref)
(if (equal? format (normalize "linespecific"))
(if fileref
(include-file fileref)
(include-file (entity-generated-system-id entityref)))
(if fileref
($graphic$ fileref display format scale align)
($graphic$ (entity-generated-system-id entityref)
display format scale align)))
(empty-sosofo))))
(element graphic
(make paragraph
space-before: %block-sep%
space-after: %block-sep%
($img$ (current-node) #t)))
(element inlinegraphic ($img$))
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