generate qrcode externally, needs python qrcode and pillow

wedding-invitation/Makefile

@@ -2,12 +2,16 @@ DOC=thiep1
 INPUT=$(DOC).tex
 TARGET=$(DOC).pdf
 TEX=xelatex
+QR=qr.png
 
 default: $(TARGET)
 
-$(TARGET): $(INPUT) Makefile 
+$(TARGET): $(INPUT) Makefile $(QR)
 	$(TEX) $< && $(TEX) $< 
 
+$(QR): event.txt
+	cat $< | qr > $@
+
 clean:
 	rm -f $(DOC).{pdf,out,aux,log}
 	rm -f *.{pdf,out,aux,log,bbl,blg}

wedding-invitation/event.txt

@@ -0,0 +1,13 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+SUMMARY:Đám cưới Nam-Hương
+DTSTART:20200301
+DTEND:20200301
+DTSTAMP:20200301T140000
+LOCATION:Nhà hàng Âu Cơ, 1A Nguyễn Hữu Cầu, P. Ngọc Châu, Thành phố Hải Dương, Hải Dương, Vietnam
+GEO:20.9351879;106.3433482,18
+URL:https://goo.gl/maps/eyfMhXgjFTQzAWB79
+DESCRIPTION:
+END:VEVENT
+END:VCALENDAR

wedding-invitation/qrEvent.tex

@@ -1,21 +0,0 @@
-\documentclass{article}
-\pagestyle{empty}
-
-\usepackage{pstricks}
-\usepackage{pst-barcode}
-\usepackage{graphicx}
-
-\begin{document}
-  \begin{pspicture}(2in,2in)
-    \psbarcode{BEGIN:VCALENDAR^^J%
-      VERSION:2.0^^J%
-      BEGIN:VEVENT^^J%
-      SUMMARY:Wedding Nam-Huong^^J%
-      LOCATION:Auco Convention Center, Haiduong, Haiduong^^J%
-      DTSTART;TZID=Asia/Saigon:20200301T160000^^J%
-      END:VEVENT^^J%
-      END:VCALENDAR}
-    {eclevel=M height=2 width=2}{qrcode}
-  \end{pspicture}
-\end{document}
-

wedding-invitation/thiep1.tex

@@ -6,15 +6,18 @@
 \usepackage[T1]{fontenc}
 \usepackage{ebgaramond}
 
-\usepackage{pstricks}
-\usepackage{pst-barcode}
-\usepackage{graphicx}
-
-
 \usetikzlibrary{fadings}
 % \tikzfading[name=fade right, left color=transparent!0, right color=transparent!100]
 % \tikzfading[name=fade in, inner color=transparent!200, outer color=transparent!0]
 
+% \pgfdeclareradialshading{ellipse}{\pgfpoint{50bp}{50bp}}{
+\pgfdeclareradialshading{ellipse}{\pgfpoint{100bp}{100bp}}{
+  color(0bp)=(pgftransparent!100);
+  color(25bp)=(pgftransparent!100);
+  color(50bp)=(pgftransparent!80);
+  color(75bp)=(pgftransparent!00);
+  color(100bp)=(pgftransparent!0)}
+
 \pgfdeclarehorizontalshading{FOne}{100bp} {
   color(0bp)=(pgftransparent!0);
   color(25bp)=(pgftransparent!0);
@@ -28,12 +31,15 @@
 \begin{document}
 \begin{tikzpicture}[overlay,remember picture]
   \node[anchor=east,inner sep=0pt] (pic) at (current page.east)
-  {\includegraphics[height=\pdfpageheight]{GAO_9361_01}};
+  % {\includegraphics[height=\pdfpageheight]{GAO_9361_01}};
+  {\includegraphics[height=\pdfpageheight]{027-028}};
   % \fill[white,path fading=fade right] (pic.north west) rectangle (pic.south east);
   \fill[white,path fading=myfading] (pic.north west) rectangle (pic.south east);
-  \coordinate (pin) at (12,-2.5);
+  % \coordinate (pin) at (12,-2.5);
   % \filldraw[ultra thick,draw=red,fill=red!50] (pin) -- ++(70:.5) arc (-20:200:.18) -- cycle;
   % \path (pin) -- ++(0,.5) node[draw,fill,red,circle,inner sep=1pt] {};
+  \node[anchor=south east, inner sep=0pt] (qr) at (pic.south east)
+  {\includegraphics[height=2.8cm]{qr}};
 \end{tikzpicture}%
 
 \obeylines%
@@ -50,7 +56,7 @@
   Nam and Huong
 }
 
-% \vfill
+\vfill
 {\addfontfeatures{Scale=1.4,LetterSpace=5}\scshape when?}
 \textit{%
   March 1\/\rlap{,}\textsuperscript{st} 2020
@@ -66,16 +72,4 @@
   Hai Duong City, Hai Duong
 }
 
-  \begin{pspicture}(2in,2in)
-    \psbarcode{BEGIN:VCALENDAR^^J%
-      VERSION:2.0^^J%
-      BEGIN:VEVENT^^J%
-      SUMMARY:Wedding Nam-Huong^^J%
-      LOCATION:Auco Convention Center, Haiduong, Haiduong^^J%
-      DTSTART;TZID=Asia/Saigon:20200301T160000^^J%
-      END:VEVENT^^J%
-      END:VCALENDAR}
-    {qrcode}
-  \end{pspicture}
-
 \end{document}