sphinx.ext.graphviz – Add Graphviz graphs

0.6 新版功能.

This extension allows you to embed Graphviz graphs in your documents.

It adds these directives:

.. graphviz::

Directive to embed graphviz code. The input code for dot is given as the content. For example:

.. graphviz::

   digraph foo {
      "bar" -> "baz";
   }

In HTML output, the code will be rendered to a PNG or SVG image (see graphviz_output_format). In LaTeX output, the code will be rendered to an embeddable PDF file.

You can also embed external dot files, by giving the file name as an argument to graphviz and no additional content:

.. graphviz:: external.dot

As for all file references in Sphinx, if the filename is absolute, it is taken as relative to the source directory.

在 1.1 版更改: Added support for external files.

.. graph::

Directive for embedding a single undirected graph. The name is given as a directive argument, the contents of the graph are the directive content. This is a convenience directive to generate graph <name> { <content> }.

For example:

.. graph:: foo

   "bar" -- "baz";

注解

The graph name is passed unchanged to Graphviz. If it contains non-alphanumeric characters (e.g. a dash), you will have to double-quote it.

.. digraph::

Directive for embedding a single directed graph. The name is given as a directive argument, the contents of the graph are the directive content. This is a convenience directive to generate digraph <name> { <content> }.

For example:

.. digraph:: foo

   "bar" -> "baz" -> "quux";

1.0 新版功能: All three directives support an alt option that determines the image’s alternate text for HTML output. If not given, the alternate text defaults to the graphviz code.

1.1 新版功能: All three directives support a caption option that can be used to give a caption to the diagram.

在 1.4 版更改: All three directives support a graphviz_dot option that can be switch the dot command within the directive.

1.5 新版功能: All three directives support a align option to align the graph horizontal. The values “left”, “center”, “right” are allowed.

1.6 新版功能: All three directives support a name option to set the label to graph.

There are also these config values:

graphviz_dot

The command name with which to invoke dot. The default is 'dot'; you may need to set this to a full path if dot is not in the executable search path.

Since this setting is not portable from system to system, it is normally not useful to set it in conf.py; rather, giving it on the sphinx-build command line via the -D option should be preferable, like this:

sphinx-build -b html -D graphviz_dot=C:\graphviz\bin\dot.exe . _build/html

graphviz_dot_args

Additional command-line arguments to give to dot, as a list. The default is an empty list. This is the right place to set global graph, node or edge attributes via dot’s -G, -N and -E options.

graphviz_output_format

The output format for Graphviz when building HTML files. This must be either 'png' or 'svg'; the default is 'png'. If 'svg' is used, in order to make the URL links work properly, an appropriate target attribute must be set, such as "_top" and "_blank". For example, the link in the following graph should work in the svg output:

.. graphviz::

     digraph example {
         a [label="sphinx", href="http://sphinx-doc.org", target="_top"];
         b [label="other"];
         a -> b;
     }

1.0 新版功能: Previously, output always was PNG.