doc: Use a CSS and callout images for the HTML output.

doc/manual/Makefile.am

@@ -2,18 +2,23 @@ DOCBOOK_FILES = installation.xml introduction.xml manual.xml projects.xml
 
 EXTRA_DIST = $(DOCBOOK_FILES) manual.pdf
 
+xsltproc_opts =					\
+ --param html.stylesheet \'style.css\'		\
+ --param callout.graphics.extension \'.gif\'
+
 dblatex_opts = \
  -V \
  -P doc.collab.show=0 \
  -P latex.output.revhistory=0
 
 # Include the manual in the tarball.
-dist_html_DATA = manual.html
+dist_html_DATA = manual.html style.css
 dist_pdf_DATA = manual.pdf
 
 manual.html: $(DOCBOOK_FILES)
 	if test "$(XSLTPROC)" != ""; then				\
-		$(XSLTPROC) --nonet --xinclude --output manual.html	\
+		$(XSLTPROC) $(xsltproc_opts) --nonet --xinclude		\
+	           --output manual.html					\
 	 	   $(docbookxsl)/html/docbook.xsl manual.xml;		\
 	else								\
 		echo "Please install xsltproc and rerun configure.";	\
@@ -28,6 +33,18 @@ manual.pdf : $(DOCBOOK_FILES)
 	        exit 1; \
 	fi
 
-install-data-local:
-	$(INSTALL) -d $(DESTDIR)$(datadir)/doc/hydra/manual
-	$(INSTALL_DATA) manual.pdf $(DESTDIR)$(datadir)/doc/hydra/manual
+images:
+	$(MKDIR_P) images/callouts
+	if cp $(docbookxsl)/images/callouts/*.gif images/callouts; then	\
+		chmod +wx images images/callouts;			\
+	else								\
+		echo "Please install Docbook XSL and try again.";	\
+		exit 1;							\
+	fi
+
+install-data-hook: images
+	$(INSTALL) -d $(DESTDIR)$(htmldir)/images/callouts
+	$(INSTALL_DATA) images/callouts/* $(DESTDIR)$(htmldir)/images/callouts
+
+distclean-hook:
+	-rm -rf images