def qrcode_save_and_show(itype='png'):
data = get_example_data(ex=0)
qrcode = QRCode(data)
img = qrcode.to_img()
filename = '/tmp/qr-code.{}'.format(itype)
img.save(filename)
open_file(filename)
def qrcode_example_to_SVGElement():
# The dimensions of the QR-Code
width, height = 100, 100
# Make an SVG root element
from newskylabs.graphics.svg.svg import SVGElement
root = SVGElement.root(width=width, height=height, absolute=True)
# Make an QR-Code SVG element
data = get_example_data(ex=0)
qrcode = QRCode(data)
qrcode_svg_element = qrcode.to_SVGElement(x=0,
y=0,
width=width,
height=height)
# Append the QR-Code SVG element to the SVG root element
root.append(qrcode_svg_element)
# Get a temporary file name
import tempfile
_, svgfile = tempfile.mkstemp(suffix='.svg',
prefix='qrcode.',
dir='/tmp',
text=True)
# Save the SVG file
root.save(svgfile)
# And finally open it
application = 'Google Chrome'
open_file(svgfile, application=application)
def vcard_example_to_QRCode_jpg():
data = get_example_data(ex=0)
vc = VCard(data)
qr_code = vc.to_QRCode()
qr_code_img = qr_code.to_img()
qr_code_file = '/tmp/qr-code.jpg'
qr_code_img.save(qr_code_file)
from newskylabs.graphics.utils.general import open_file
open_file(qr_code_file)
def show_back(self, application='Google Chrome'):
# Ensure that the svg has been generated
if not self._saved_back_as:
self.save_back()
# Get the filename
filename = self._saved_back_as
# Open the SVG file
open_file(filepath, application=application)
def save_back(self, back=None, show=False, pdf=True):
# Ensure that the svg has been generated
if not self._svg_back:
self.generate_back()
# When no svgfile has been given
# take it from the data
if isinstance(back, str):
svgfile = back
else:
svgfile = self.get_data('svgfile.back')
# Print a message
print("Saving back side of meishi as {}".format(svgfile))
# Save as SVG file
self._svg_back.save(svgfile)
# Should I show the generated SVG?
if show:
application = 'Google Chrome'
open_file(svgfile, application=application)
# Remember last file saved to
self._saved_back_as = svgfile
# Save as pdf?
if pdf:
# Is 'pdf' a string?
# If so use it as pdf file name
if isinstance(pdf, str):
pdffile = pdf
else:
pdffile = self.get_data('pdffile.back')
# Print a message
print("Saving back side of meishi as {}".format(pdffile))
# Convert saved svg to pdf
self.svg2pdf(svgfile, pdffile)
# Return svg and pdf file name
return pdffile
# Default - do not save as pdf
# Return svg file name
return svgfile
def qrcode_to_svg(method=None):
data = get_example_data(ex=0)
qrcode = QRCode(data)
img = qrcode.to_img(itype='svg', method=method)
if method == None:
img.show()
else:
# The methods 'basic', 'fragment', and 'path'
# do not have a 'show()' method:
import tempfile
_, filename = tempfile.mkstemp(suffix='.svg',
prefix='qrcode.',
dir='/tmp',
text=True)
img.save(filename)
application = 'Google Chrome'
open_file(filename, application=application)
def show(self,
filename=None,
application='Google Chrome',
pretty_print=False,
xml_declaration=True):
if not filename:
import tempfile
_, filename = tempfile.mkstemp(suffix='.svg',
prefix='qrcode.',
dir='/tmp',
text=True)
self.save(filename,
pretty_print=pretty_print,
xml_declaration=xml_declaration)
from newskylabs.graphics.utils.general import open_file
open_file(filename, application=application)
return filename
def save(self, front=True, back=True, show=True, pdf=True, merge=True):
frontfile = self.save_front(front=front, show=show, pdf=pdf)
backfile = self.save_back(back=back, show=show, pdf=pdf)
# whould I merge the front and back pdfs into one pdf?
if front and back and pdf and merge:
# Is 'merge' a string?
# If so use it as pdf file name
if isinstance(merge, str):
mergedfile = pdf
else: # Interpreted as True
mergedfile = self.get_data('pdffile.merged')
# Print a message
print(
"Saving front and back side combined as {}".format(mergedfile))
pdfs = [frontfile, backfile]
merger = PdfFileMerger()
for pdf in pdfs:
merger.append(pdf)
merger.write(mergedfile)
merger.close()
# Should I show the generated pdf?
if show:
open_file(mergedfile)
return mergedfile
return frontfile, backfile
