The SVG output produced by external tools needs some postprocessing.
This is implemented by this new XSL stylesheet.
Issues are:
- SVG produced by Ditaa does not add a viewBox attribute to the svg
element, needed to make the image scalable.
- SVG produced by Graphviz uses a stroke="transparent" attribute,
which is not valid SVG. It appears to mostly work, but FOP
complains.
Other tweaks can be added over time.
This reverts 7dc78d8ef3 and
29046c44f3, which applied these fixes
manually.
Recently added guidance on adding SVG images to the documentation
sources lacks advice on making the images responsive when rendered
in a variety of media types and viewports. Add some.
Patch by Jonathan Katz with some editorialization by me.
Author: Jonathan Katz
Discussion: https://postgr.es/m/6358ae6f-7191-a02b-e7b5-68050636ae71@postgresql.org