[Okular-devel] md5 hash for annotation file name

[Markus Grabner]

	Hi!

    It has been discussed (http://bugs.kde.org/show_bug.cgi?id=151614) to use 
a hash function to determine the name of the annotation file created by 
okular. The attached patch implements this behaviour (thanks Ivo for pointing 
me to QCryptographicHash - I looked for such a thing but somehow missed it).

It works nicely in several ways:
*) Annotations keep associated with the file after renaming it.
*) It also works for non-local URLs (http://...) since we don't need to care
for mapping the URL to some valid file name.
*) Annotations keep associated with the file after downloading it from the web
and opening a local copy (possibly under a different name).

	Kind regards,
		Markus


-- 
Markus Grabner - Computer Graphics and Vision
Graz University of Technology, Inffeldgasse 16a/II, 8010 Graz, Austria
Phone: +43/316/873-5041, Fax: +43/316/873-5050
WWW: http://www.icg.tugraz.at/Members/grabner
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