Icons not included into the resulting svg and as a result can not be imported into the SaaS such as draw.io

Icons not included into the resulting svg and as a result can not be imported into the SaaS such as draw.io

Hi, thanks, cool project, I was following guides and created example and changed outformat="svg"

However svg generated contains following:

<g id="node5" class="node">
<title>3f42a5b2346adbddd04f3b60e84ea285</title>
<image xlink:href="/Users/test/.local/share/virtualenvs/diag-AzfPdfmQ/lib/python3.7/site-packages/resources/aws/compute/elastic-container-service.png" width="101px" height="101px" preserveAspectRatio="xMinYMin meet" x="310" y="-470.5"/>
<text text-anchor="middle" x="360.5" y="-358.1" font-family="Sans-Serif" font-size="13.00" fill="#2d3436">web3</text>
</g>

I.e. it references icons from filesystem, as a result, when I try to upload this svg to SaaS such as draw.io it results in image being rendered without icons, i.e.

Is there any way to embed icons in the resulting SVG?

[staticaland]

@atkawa7 Thanks! scour works well for me with this code:

from scour import scour
from diagrams import Diagram
from diagrams.aws.compute import EC2

filename = "ec2"
outformat = "svg"
full_filename = f"{filename}.{outformat}"

with Diagram("EC2", filename=filename, show=False, direction="LR", outformat=outformat, graph_attr={"pad": "0.1,0.1"}):
    EC2()

with open(full_filename, "r") as f:

    in_string = f.read()
    out_string = scour.scourString(in_string)

with open(full_filename, "w") as f:

    f.write(out_string)

This embeds the images as base64 in the XML of the SVG file. Of course a better solution would be to intercept the SVG before it’s saved to disk.

So instead of running self.dot.render(format=self.outformat, view=self.show) on the SVG, maybe do something like scour.scourString(self.dot.pipe().decode('utf-8')) and write that to file. What do you think @mingrammer?

See https://graphviz.readthedocs.io/en/stable/manual.html#piped-output

Function in scour is embedRasters.

Used like:

for elem in doc.documentElement.getElementsByTagName('image'):
    embedRasters(elem, options)

[skgsergio]

Less ugly patch than the one mentioned by @ajeep8:

with Diagram("My Diagram", show=False, outformat="svg", graph_attr={"bgcolor": "white"}) as diag:
    # Use graphviz cairo renderer to force image embedding
    diag.dot.renderer = "cairo"

"bgcolor": "white" is important if you want a solid white background as using cairo defaults to transparent.

The downside is that it will name your file my_diagram.cairo.svg