Replace hard-coded QR picture by qrcode package

authorarchive.sty

@@ -17,6 +17,7 @@
 \RequirePackage{embedfile}
 \RequirePackage{kvoptions}
 \RequirePackage{calc}
+\RequirePackage{qrcode}
 %
 % Option declarations
 % -------------------
@@ -26,7 +27,6 @@
 }
 
 \DeclareStringOption[.]{bibtexdir}
-\DeclareStringOption[.]{qrdir}
 \DeclareStringOption[https://git.logicalhacking.com/adbrucker/authorarchive/src/master]{baseurl}
 \DeclareStringOption[.pdf]{suffix}
 \DeclareStringOption[UNKOWN PUBLISHER]{publisher}[]
@@ -192,7 +192,9 @@
 \AddToShipoutPicture*{%
   \setlength{\unitlength}{1mm}%
   \authorat{%
-    \includegraphics[width=1.2cm]{\AA@qrdir/\AA@key-qr.pdf}\hspace{.2cm}%  
+    \ifAA@nourl\relax\else%
+      \raisebox{.5cm}[.5cm]{\qrcode[hyperlink,height=1.17cm,padding]{\AA@baseurl/\AA@key\AA@suffix}}%
+    \fi%
     \authorcrfont\parbox[b]{\AA@width-1.4cm}{
       \ifAA@LNCS%
       \AA@publication, pp. \thepage--\pageref{LastPage}, \AA@year.\\%