Update Barcode Signatures in Document Leave feedback
GroupDocs.Signature for Python via .NET provides functionality to manipulate barcode signatures’ location and size. Please note that the update method modifies the same document that was passed to the constructor of the Signature class, so the example below copies the signed document first and updates the copy.
- Create a new instance of the Signature class and pass the source document path as a constructor parameter
- Instantiate the BarcodeSearchOptions object with desired properties
- Call the search method; the
signaturesproperty of the returned SearchResult holds the found barcode signatures - Select from the list the BarcodeSignature object(s) that should be updated and change their position or size
- Call the Signature object’s update method and pass one or several signatures to it; for a single signature it returns
Truewhen the signature was updated
This example shows how to update a Barcode signature that was found using the search method:
import shutil
from groupdocs.signature import Signature
from groupdocs.signature.options import BarcodeSearchOptions
def update_barcode_signature():
# update() saves the changes into the opened document, so work on a copy
shutil.copy("signed.docx", "updated_barcode_signature.docx")
with Signature("updated_barcode_signature.docx") as signature:
options = BarcodeSearchOptions()
# Return only signatures added by GroupDocs.Signature, not barcodes that are part of the document
options.skip_external = True
signatures = signature.search([options]).signatures
print(f"Found {len(signatures)} barcode signature(s)")
if not signatures:
return
barcode_signature = signatures[0]
# Change the position
barcode_signature.left = 60
barcode_signature.top = 700
# Change the size. Not all document formats support resizing a signature
barcode_signature.width = 320
barcode_signature.height = 80
if signature.update(barcode_signature):
print(f"Barcode '{barcode_signature.text}' ({barcode_signature.encode_type.type_name}) "
f"moved to ({barcode_signature.left}, {barcode_signature.top}) "
f"and resized to {barcode_signature.width}x{barcode_signature.height}")
else:
print(f"Barcode '{barcode_signature.text}' was not updated")
if __name__ == "__main__":
update_barcode_signature()
signed.docx is the sample file used in this example. Click here to download it.
Binary file (DOCX, 147 KB)
You may easily run the code above and see the feature in action in our GitHub examples:
Along with the full-featured Python library, we provide simple but powerful free online apps.
To generate barcodes and/or sign your files with barcodes for free, you can use the Barcode Generator online app.
To sign PDF, Word, Excel, PowerPoint, and other documents you can use the other online apps from the GroupDocs.Signature App Product Family.
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