Combine existing SVG files

[00dav00]

Hi there, I have a use case that I'm not sure how to address with this gem.
I need to conbine 2 SVG files:

• An SVG logo
• An SVG QR code generated by this gem

I've checked victor-cli a little bit and I think it can help with me with this problem, just not sure how.
Is there a tool or method I'm missing that can accomplish that?

Thanks!

[DannyBen]

Victor was not designed for this, it was designed to generate SVG from within Ruby, from scratch.

However, you might be able to use the #append (aka << operator) feature, which allows you to merge any object that responds to #to_s, and returns an SVG string.

Notice, you will need to obtain the SVG string without any of its surrounding <svg> tags - only the "body".

Here is a sample, to hopefully get you on the right track. This takes two SVG strings, and merges them into one SVG object, while transforming (moving) one of them to a certain position.

require 'victor'
include Victor

logo = '<rect x="0" y="0" width="50" height="50" fill="red"/>'
qrcode = '<circle cx="50" cy="60" r="20" fill="yellow"/>'

svg = SVG.new viewBox: '0 0 100 100', style: { background: "#ddd" }
svg.build do
  append logo
  g(transform: "translate(10  10)") { append qrcode }
end

svg.save 'merged'

Remember, the #append method only needs a string, so if you are using the QR code gem, and if it has a method that returns the SVG string itself (without root node), you may be able to do it all in "one pass" from within Ruby - instantiate the QR object, get (not save) its string, and merge it with your logo that you obtain via File.read or however.

[00dav00]

Thanks for the quick reply @DannyBen, the info helps a lot.

I've found this method in victor-cli which I think will help me too:

Victor::CLI::SVGNode.load_file

[00dav00]

Closing the issue, never the less I think it would be nice to be able to open existing SVG to append things to them. ;)