PlantUML for Sphinx

Installation

pip install sphinxcontrib-plantuml

Usage

Add sphinxcontrib.plantuml to your extensions list in your conf.py:

extensions = [
    'sphinxcontrib.plantuml',
]

You may also need to specify the plantuml command in your conf.py:

plantuml = 'java -jar /path/to/plantuml.jar'

Instead, you can install a wrapper script in your PATH:

% cat <<EOT > /usr/local/bin/plantuml
#!/bin/sh -e
java -jar /path/to/plantuml.jar "$@"
EOT
% chmod +x /usr/local/bin/plantuml

Then, write PlantUML text under the .. uml:: (or .. plantuml::) directive:

.. uml::

   Alice -> Bob: Hi!
   Alice <- Bob: How are you?

or specify path to an external PlantUML file:

.. uml:: external.uml

You can specify height, width, scale and align:

.. uml::
   :scale: 50 %
   :align: center

   Foo <|-- Bar

You can also specify a caption:

.. uml::
   :caption: Caption with **bold** and *italic*
   :width: 50mm

   Foo <|-- Bar

For details, please see PlantUML documentation.

Configuration

plantuml

Path to plantuml executable. (default: 'plantuml')

plantuml_output_format

Type of output image for HTML renderer. (default: 'png')

png:	generate only .png inside </img>
svg:	generate .svg inside <object/> with .png inside </img> as a fallback
svg_img:	generate only .svg inside <img/> (browser support)
svg_obj:	generate only .svg inside <object/> (browser support)
none:	do not generate any images (ignore uml directive)

When svg is inside <object/> it will always render full size, possibly bigger than the container. When svg is inside <img/> it will respect container size and scale if necessary.

plantuml_latex_output_format

Type of output image for LaTeX renderer. (default: 'png')

eps:	generate .eps (not supported by pdflatex)
pdf:	generate .eps and convert it to .pdf (requires epstopdf)
png:	generate .png
tikz:	generate .latex in the TikZ format
none:	do not generate any images (ignore uml directive)

Because embedded png looks pretty bad, it is recommended to choose pdf for pdflatex or eps for platex.

plantuml_epstopdf

Path to epstopdf executable. (default: 'epstopdf')

plantuml_syntax_error_image

Should plantuml generate images with render errors. (default: False)

plantuml_cache_path

Directory where image cache is stored. (default: '_plantuml')

plantuml_batch_size

(EXPERIMENTAL) Run plantuml command per the specified number of images. (default: 1)

If enabled, plantuml documents will be first written to the cache directory, and rendered in batches. This eliminates bootstrapping overhead of Java runtime and allows plantuml to leverage multiple CPU cores.

To enable batch rendering, set the size to 100-1000.

Developing

Install the python test dependencies with

pip install sphinxcontrib-plantuml[test]

In addition the following non-python dependencies are required in order to run the tests:

• latexmk
• plantuml
• texlive
• texlive-font-utils
• texlive-latex-extra

The tests can be executed using pytest

pytest