PDF::API2::Resource::XObject::Form::BarCode::qrcode - Generate QR
codes
use PDF::API2;
my $pdf = PDF::API2->new();
my $page = $pdf->page();
# Create a QR Code object
my $barcode = $pdf->barcode('qr', 'This is a test');
# Calculate the scale needed for a desired size (72pt / inch)
my $desired_inches = 2;
my $scale = $desired_inches * 72 / $barcode->width();
# Place the QR Code one inch (72pt) from the bottom left corner
$page->object($barcode, 72, 72, $scale);
$pdf->save('qr_test.pdf');
Text::QRCode is used to encode QR codes.
my $barcode = $pdf->barcode('qr', $value, %options);
The following standard barcode options are supported, as described
in "barcode" in PDF::API2:
- bar_width (default: 1; unit is points)
- bar_height (default: bar width)
- quiet_zone (default: 4x bar width)
- color (default: black)
The following options are specific to QR codes:
- •
- error_correction (default: L)
The QR Code Error Correction Level. Higher levels of error
correction generate larger bar codes but remain scannable when parts of
the code are damaged or obscured.
In increasing order of error correction, the possible values
are:
- L (7%)
- M (15%)
- Q (25%)
- H (30%)
- version (default: 0)
If you need a specific version of QR Code, enter it here.
Otherwise, the minimum version will be used that can support the encoded
value.
- mode (default: 8-bit)
You can generate smaller QR codes if you're using a restricted
character set:
- 8-bit (typically the ISO-8859-1 character set)
- kanji
- alphanumeric (digits, uppercase letters, space, or
"$ % * + - . / :")
- numeric (digits)
- •
- case_sensitive (default: 1)
Whether 8-bit characters should be treated in a case-sensitive
manner.