Background is now white, export to png or pdf is possible
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3 changed files with 69 additions and 38 deletions
11
README.md
11
README.md
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@ -1,4 +1,4 @@
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# qrr-py
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# qrr.py
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Erstelle ein vektorisierter QR Code für die [QR Rechnung](
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Erstelle ein vektorisierter QR Code für die [QR Rechnung](
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https://www.einfach-zahlen.ch/de/home/issuer/qr-bill.html).
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https://www.einfach-zahlen.ch/de/home/issuer/qr-bill.html).
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@ -9,9 +9,10 @@ SVG Datei daraus.
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## Installationsanleitung
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## Installationsanleitung
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Zuerst müssen Sie Python3 für Ihr Betriebssystem installieren.
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Zuerst müssen Sie [Python3](https://www.python.org/)
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für Ihr Betriebssystem installieren.
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Mit `pip3 install --user qrcode svgutils` können sie sich die
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Mit `pip3 install --user qrcode svgutils cairosvg` können sie sich die
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notwendigen Pakete herunterladen.
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notwendigen Pakete herunterladen.
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## Ausführen des Programms
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## Ausführen des Programms
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@ -21,8 +22,8 @@ gestartet.
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Wenn das Programm keinen Output generiert, so gab es keine Fehler und
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Wenn das Programm keinen Output generiert, so gab es keine Fehler und
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die SVG Datei sollte erstellt sein.
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die SVG Datei sollte erstellt sein.
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# `CH-Kreuz_7mm.svg` Datei
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# CH-Kreuz
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Diese Datei ist von [SIX Group AG](
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Diese Graphik ist von [SIX Group AG](
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https://www.paymentstandards.ch/de/home/software-partner.html) zur
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https://www.paymentstandards.ch/de/home/software-partner.html) zur
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Verfügung gestellt. Der direkte Download ist dieser:
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Verfügung gestellt. Der direkte Download ist dieser:
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https://www.paymentstandards.ch/dam/downloads/swiss-cross.zip
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https://www.paymentstandards.ch/dam/downloads/swiss-cross.zip
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30
ch_kreuz.py
30
ch_kreuz.py
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@ -5,16 +5,20 @@ import svgutils.transform as st
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def swisscross():
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def swisscross():
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return st.fromstring(
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return st.fromstring(
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'<?xml version="1.0" encoding="utf-8"?>\
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'<svg width="49.5mm" height="49.5mm" version="1.1" viewBox="0 0 49.5 49.5" xmlns="http://www.w3.org/2000/svg">\
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<svg width="7mm" height="7mm" version="1.1" id="Ebene_2" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"\
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<style type="text/css">.st0{fill:#FFFFFF;}\
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viewBox="0 0 19.8 19.8" style="enable-background:new 0 0 19.8 19.8;" xml:space="preserve">\
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.st1{fill:none;stroke:#FFFFFF;stroke-width:1.4357;stroke-miterlimit:10;}</style>\
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<style type="text/css">\
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<style type="text/css">.st0{fill:#FFFFFF;}\
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.st0{fill:#FFFFFF;}\
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.st1{fill:none;stroke:#FFFFFF;stroke-width:1.4357;stroke-miterlimit:10;}</style>\
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.st1{fill:none;stroke:#FFFFFF;stroke-width:1.4357;stroke-miterlimit:10;}\
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<polygon transform="matrix(.34905 0 0 .34905 21.294 21.294)" points="0.7 18.3 0.7 19.1 1.6 19.1 18.3 19.1 19.1 19.1 19.1 18.3 19.1 1.6 19.1 0.7 18.3 0.7 1.6 0.7 0.7 0.7 0.7 1.6"/>\
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</style>\
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<rect class="st0" x="24.192" y="22.691" width="1.1519" height="3.8396" stroke-width=".34905"/>\
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<polygon points="18.3,0.7 1.6,0.7 0.7,0.7 0.7,1.6 0.7,18.3 0.7,19.1 1.6,19.1 18.3,19.1 19.1,19.1 19.1,18.3 19.1,1.6 19.1,0.7 "/>\
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<rect class="st0" x="22.83" y="24.052" width="3.8396" height="1.1519" stroke-width=".34905"/>\
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<rect x="8.3" y="4" class="st0" width="3.3" height="11"/>\
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<polygon class="st1" transform="matrix(.34905 0 0 .34905 21.294 21.294)" points="18.3 19.1 19.1 19.1 19.1 18.3 19.1 1.6 19.1 0.7 18.3 0.7 1.6 0.7 0.7 0.7 0.7 1.6 0.7 18.3 0.7 19.1 1.6 19.1"/>\
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<rect x="4.4" y="7.9" class="st0" width="11" height="3.3"/>\
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</svg>'
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<polygon class="st1" points="0.7,1.6 0.7,18.3 0.7,19.1 1.6,19.1 18.3,19.1 19.1,19.1 19.1,18.3 19.1,1.6 19.1,0.7 18.3,0.7 1.6,0.7 0.7,0.7 "/>\
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)
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</svg>'
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).getroot()
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def white():
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return st.fromstring(
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'<svg width="49.5mm" height="49.5mm" version="1.1" viewBox="0 0 49.5 49.5" xmlns="http://www.w3.org/2000/svg">\
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<rect x="0" y="0" width="49.5" height="49.5" fill="#fff"/>\
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</svg>')
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66
qrr.py
66
qrr.py
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@ -5,6 +5,10 @@ import qrcode
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import qrcode.image.svg
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import qrcode.image.svg
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from svgutils import transform as st
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from svgutils import transform as st
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from ch_kreuz import swisscross as get_swisscross
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from ch_kreuz import swisscross as get_swisscross
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from ch_kreuz import white as get_white
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from svgutils.compose import Figure
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from cairosvg import (svg2pdf, svg2png)
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class qr_rechnung():
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class qr_rechnung():
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data = ''
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data = ''
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@ -26,7 +30,6 @@ class qr_rechnung():
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mode = 'w' if force else 'x'
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mode = 'w' if force else 'x'
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try:
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try:
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assert force or not os.path.isfile(filepath)
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assert force or not os.path.isfile(filepath)
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factory = qrcode.image.svg.SvgPathImage
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img = qrcode.make(
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img = qrcode.make(
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self.data,
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self.data,
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error_correction=qrcode.constants.ERROR_CORRECT_M,
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error_correction=qrcode.constants.ERROR_CORRECT_M,
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@ -38,28 +41,29 @@ class qr_rechnung():
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return 1
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return 1
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qrcode = st.fromfile(filepath)
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qrcode = st.fromfile(filepath)
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offset = self.calc_move_offset(qrcode.get_size()[0])
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try:
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swisscross = get_swisscross()
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assert qrcode.width[-2:] == 'mm'
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swisscross.moveto(
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qr_scale = 49.5/float(qrcode.width[:-2])
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x=offset['offset'],
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except AssertionError as e:
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y=offset['offset'],
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print(f"ERROR: Ein unerwarteter Fall in der Skallierung.")
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scale_x=offset['scale'],
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print(e)
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scale_y=offset['scale']
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return 1
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)
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qrcode.append(swisscross)
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qrcode.save(filepath)
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def calc_move_offset(self, size):
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qrr = Figure(
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org = float(size[:-2])
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'49.5mm', '49.5mm',
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return {
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get_white().getroot(),
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'offset': org*0.427935156,
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qrcode.getroot().scale(qr_scale),
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'scale': org/137.364857143
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get_swisscross().getroot()
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}
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)
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qrr.save(filepath)
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def help(args):
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def help(args):
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return '{0}: Ungültige Eingabe\nAufruf: \
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return '\n'.join([
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{0} TEXTDATEI [SVG-ZIELDATEI]'.format(args[0])
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'{0}: Ungültige Eingabe',
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'Aufruf: {0} TEXTDATEI [SVG-ZIELDATEI]',
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'Alternativ kann die ZIELDATEI auch mit .pdf oder .png enden.'
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]).format(args[0])
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def main(args):
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def main(args):
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print(help(args))
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print(help(args))
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return 1
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return 1
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try:
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try:
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output_format = 'svg'
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svgfile = args[2]
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svgfile = args[2]
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if svgfile[-4:] == '.svg':
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pass
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elif svgfile[-4:] == '.png':
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svgfile = svgfile[:-4]+'.svg'
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output_format = 'png'
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elif svgfile[-4:] == '.pdf':
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svgfile = svgfile[:-4]+'.svg'
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output_format = 'pdf'
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else:
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svgfile += '.svg'
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except IndexError:
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except IndexError:
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try:
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try:
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assert textfile[-4:] == '.txt'
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assert textfile[-4:] == '.txt'
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@ -83,7 +99,17 @@ def main(args):
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except (PermissionError, FileNotFoundError) as e:
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except (PermissionError, FileNotFoundError) as e:
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print(e)
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print(e)
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return 1
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return 1
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return 0
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if output_format == 'svg':
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return 0
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elif output_format == 'png':
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svg2png(url=svgfile, write_to=svgfile[:-4]+'.png', dpi=600)
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return 0
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elif output_format == 'pdf':
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svg2pdf(url=svgfile, write_to=svgfile[:-4]+'.pdf')
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return 0
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else:
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print(f"ERROR: Unbekanntes Output_format: {output_format}")
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return 1
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if __name__ == '__main__':
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if __name__ == '__main__':
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