doc/manual: Rework image handling.

* doc/manual/Makefile.am: Do not convert PNGs to PDFs first for the
PDF manual, do not scale the EPS pictures down.
* doc/manual/scute.texi: Scale and center images for the LaTeX-based
formats.

Signed-off-by: Justus Winter <justus@g10code.com>

TODO

@@ -2,7 +2,6 @@
 
 * Manual:
 ** Some FIXME's which need attention.
-** The pictures in PDF output are blurry.
 ** The pictures in info output do not exist.
 
 * Bugs or misfeatures:

doc/manual/Makefile.am

@@ -36,11 +36,10 @@ images = firefox-cm.png firefox-cm-view-detail.png firefox-cm-view.png \
 	firefox-dm-load.png firefox-dm-token-present.png firefox-pref.png \
 	firefox-pref-view.png
 
-images_pdf = $(images:.png=.pdf)
 images_eps = $(images:.png=.eps)
 
 EXTRA_DIST = $(images)
-CLEANFILES = $(images_pdf) $(images_eps)
+CLEANFILES = $(images_eps)
 
 info_TEXINFOS = scute.texi
 scute_TEXINFOS = gpl.texi
@@ -52,10 +51,7 @@ scute.html/%.png: %.png
 	cp -v "$<" "$@"
 
 scute.dvi: $(images_eps)
-scute.pdf: $(images_pdf)
+scute.pdf: $(images)
 
 %.eps : %.png
-	$(CONVERT) -resize 50% `test -f '$<' || echo '$(srcdir)/'`$< $@
-
-%.pdf : %.eps
-	$(EPSTOPDF) `test -f '$<' || echo '$(srcdir)/'`$< --outfile=$@
+	$(CONVERT) `test -f '$<' || echo '$(srcdir)/'`$< $@

doc/manual/scute.texi

@@ -481,12 +481,12 @@ the preferences configuration dialog, you should select the
 @code{Advanced} configuration section, then the @code{Security} tab, and
 then select @code{Security Devices} in the category @code{Certificates}.
 
-@image{firefox-pref}
+@center @image{firefox-pref,13cm}
 
 In the devices manager dialog, you can select @code{Load} to load a new
 PKCS #11 device.
 
-@image{firefox-dm-load-before}
+@center @image{firefox-dm-load-before,13cm}
 
 In the pop-up dialog that follows, you can give a module name
 (e.g. ``@code{Scute}'') and a module filename.  The latter should
@@ -497,14 +497,14 @@ file name @file{/usr/local/lib/scute.so}.  If you or your system
 administrator installed Scute in a different location, you have to
 adjust the file name correspondingly.
 
-@image{firefox-dm-load}
+@center @image{firefox-dm-load,8cm}
 
 After confirming installation of the security device, a pop-up window
 should confirm that the module was successfully loaded, and an entry for
 the security device should appear in the device manager list of
 @code{Security Modules and Devices}.
 
-@image{firefox-dm-load-after}
+@center @image{firefox-dm-load-after,15cm}
 
 When you insert the OpenPGP card for which you generated and imported a
 certificate earlier (see @ref{Certificate Preparation}), the device
@@ -512,7 +512,7 @@ manager should detect this security token and display some information
 about it in the @code{Details} list when you select it from the module
 list.
 
-@image{firefox-dm-token-present}
+@center @image{firefox-dm-token-present,15cm}
 
 FIXME: Add some documentation and screenshots for the certificate
 manager.