Generate a QRCode BIP 21 with Bitcoin logo at its center

bitcoin.svg

qrcode-logo-bitcoin.rb

require 'image_processing/vips'
require 'rqrcode'

qrcode_uri = "bitcoin:my-btc-address?amount=0.000015"

qrcode = RQRCode::QRCode.new(qrcode_uri)
options = { bit_depth: 1,
            border_modules: 4,
            color_mode: ChunkyPNG::COLOR_GRAYSCALE,
            color: 'black',
            file: 'qqrcode.png',
            fill: 'white',
            module_px_size: 6,
            resize_exactly_to: false,
            resize_gte_to: false,
            size: 1200 }

dir = File.expand_path(File.dirname(__FILE__))
logo_path = File.join(dir, 'bitcoin.svg')

logo_image = ImageProcessing::Vips.source(logo_path).resize_to_fit(300, 300).call(save: false)


tmp = Tempfile.new(['qrcode_image', '.png'])
qrcode.as_png(options).save(tmp.path)

qr = ImageProcessing::Vips.source(tmp).call(save: false)
center_x = (qr.width - logo_image.width) / 2
center_y = (qr.height - logo_image.height) / 2

qrcode_image =  ImageProcessing::Vips.source(qr).composite(logo_image, gravity: 'south-west', offset: [center_x, center_y]).call(save: false)

result_path = File.join(File.dirname(__FILE__), 'qrcode_with_logo.jpg')
qrcode_image.write_to_file(result_path)
puts "QR code with logo saved to #{result_path}"

tmp.close
tmp.unlink

result

To test scan with a wallet (I tried with Binance)