Generate inheritance diagrams for models and submodels in the documentation

.readthedocs.yaml

@@ -13,6 +13,9 @@ sphinx:
 
 # Set the version of Python and other tools you might need
 build:
+  # Install Graphviz to build SVG files
+  apt_packages:
+    - "graphviz"
   os: ubuntu-22.04
   tools:
     python: "3.11"

docs/conf.py

@@ -16,8 +16,12 @@
 import sys
 import pybamm
 
+# Path for repository root
 sys.path.insert(0, os.path.abspath("../"))
 
+# Path for local Sphinx extensions
+sys.path.append(os.path.abspath("./sphinxext/"))
+
 
 # -- Project information -----------------------------------------------------
 
@@ -41,16 +45,21 @@
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
+    # Sphinx extensions
     "sphinx.ext.autodoc",
     "sphinx.ext.doctest",
     "sphinx.ext.intersphinx",
     "sphinx.ext.mathjax",
     "sphinx.ext.viewcode",
     "sphinx.ext.napoleon",
+    "sphinx.ext.inheritance_diagram",
+    # Local and custom extensions
+    "extend_parent",
+    "inheritance_diagram",
+    # Third-party extensions
     "sphinx_design",
     "sphinx_copybutton",
     "myst_parser",
-    "sphinx_extend_parent",
     "sphinx_inline_tabs",
     "sphinxcontrib.bibtex",
     "sphinx_last_updated_by_git",
@@ -60,13 +69,6 @@
     "hoverxref.extension",
 ]
 
-# -- sphinxcontrib-bibtex configuration --------------------------------------
-bibtex_bibfiles = ["../pybamm/CITATIONS.bib"]
-bibtex_style = "unsrt"
-bibtex_footbibliography_header = """.. rubric:: References"""
-bibtex_reference_style = "author_year"
-bibtex_tooltips = True
-
 
 napoleon_use_rtype = True
 napoleon_google_docstring = False
@@ -273,6 +275,14 @@
     "matplotlib": ("https://matplotlib.org/stable/", None),
 }
 
+# -- sphinxcontrib-bibtex configuration --------------------------------------
+
+bibtex_bibfiles = ["../pybamm/CITATIONS.bib"]
+bibtex_style = "unsrt"
+bibtex_footbibliography_header = """.. rubric:: References"""
+bibtex_reference_style = "author_year"
+bibtex_tooltips = True
+
 # -- nbsphinx configuration options ------------------------------------------
 
 nbsphinx_prolog = r"""
@@ -336,6 +346,57 @@
 hoverxref_tooltip_theme = ["tooltipster-shadow", "tooltipster-shadow-custom"]
 
 
+# -- sphinxext/inheritance_diagram.py options --------------------------------
+
+graphviz_output_format = "svg"
+inheritance_graph_attrs = dict(
+    rankdir="TB",
+    size='"10.0, 10.0"',
+    fontsize=10,
+    ratio="auto",
+    center="true",
+    nodesep=5,
+    ranksep=0.35,
+    bgcolor="white",
+)
+inheritance_node_attrs = dict(
+    shape="box",
+    fontsize=14,
+    fontname="monospace",
+    height=0.20,
+    color="black",
+    style="filled",
+)
+inheritance_edge_attrs = dict(
+    arrowsize=0.75,
+    style='"setlinewidth(0.5)"',
+)
+
+# -- Options for sphinx-hoverxref --------------------------------------------
+
+# Hoverxref settings
+
+hoverxref_default_type = "tooltip"
+hoverxref_auto_ref = True
+
+hoverxref_roles = ["class", "meth", "func", "ref", "term"]
+hoverxref_role_types = dict.fromkeys(hoverxref_roles, "tooltip")
+
+hoverxref_domains = ["py"]
+
+# Currently, only projects that are hosted on readthedocs + CPython, NumPy, and
+# SymPy are supported
+hoverxref_intersphinx = list(intersphinx_mapping.keys())
+
+# Tooltips settings
+hoverxref_tooltip_lazy = False
+hoverxref_tooltip_maxwidth = 750
+hoverxref_tooltip_animation = "fade"
+hoverxref_tooltip_animation_duration = 1
+hoverxref_tooltip_content = "Loading information..."
+hoverxref_tooltip_theme = ["tooltipster-shadow", "tooltipster-shadow-custom"]
+
+
 # -- Jinja templating --------------------------------------------------------
 # Credit to: https://ericholscher.com/blog/2016/jul/25/integrating-jinja-rst-sphinx/
 

docs/source/_static/pybamm.css

@@ -130,7 +130,7 @@ html[data-theme="dark"] .sd-shadow-sm {
 
 html[data-theme="dark"] .sd-card .sd-card-header {
   background-color: var(--pst-color-background);
-  color: #150458 !important;
+  color: #459db9 !important;
 }
 
 html[data-theme="dark"] .sd-card .sd-card-footer {

docs/source/user_guide/installation/install-from-source.rst

@@ -30,22 +30,28 @@ To install PyBaMM, you will need:
 - A BLAS library (for instance `openblas <https://www.openblas.net/>`_).
 - A C compiler (ex: ``gcc``).
 - A Fortran compiler (ex: ``gfortran``).
+- ``graphviz`` (optional), if you wish to build the documentation locally.
 
 You can install the above with
 
 .. tab:: Ubuntu
 
 	.. code:: bash
 
-		sudo apt install python3.X python3.X-dev libopenblas-dev gcc gfortran
+		sudo apt install python3.X python3.X-dev libopenblas-dev gcc gfortran graphviz
 
 	Where ``X`` is the version sub-number.
 
 .. tab:: MacOS
 
 	.. code:: bash
 
-		brew install python openblas gcc gfortran libomp
+		brew install python openblas gcc gfortran graphviz libomp
+
+.. note::
+
+	On Windows, you can install ``graphviz`` using the `Chocolatey <https://chocolatey.org/>`_ package manager, or
+	follow the instructions on the `graphviz website <https://graphviz.org/download/>`_.
 
 Finally, we recommend using `Nox <https://nox.thea.codes/en/stable/>`_.
 You can install it with

docs/sphinxext/inheritance_diagram.py

@@ -0,0 +1,37 @@
+# Sphinx extension to add an inheritance diagram in the docstring of a class built upon
+# the built-in sphinxext.inheritance_diagram extension. The inheritance diagram is
+# generated via graphviz and the fully qualified name of the class.
+
+from inspect import getmro, isclass
+
+
+def add_diagram(app, what, name, obj, options, lines):
+    # if it is not a class, do nothing
+    if not isclass(obj):
+        return
+    # if it is a model or submodel class, add the inheritance diagram
+    else:
+        # get the fully qualified name of the class
+        cls_name = f"{obj.__module__}.{obj.__qualname__}"
+        # check if the class is a model or submodel
+        if "pybamm.models" in cls_name:
+            # check if the class derives from another class
+            if not len(getmro(obj)) > 2:
+                # do nothing if it is not a derived class
+                return
+
+            # Append the inheritance diagram to the docstring
+            lines.append("\n")
+            lines.append(".. dropdown:: View inheritance diagram for this model")
+            lines.append("   :animate: fade-in-slide-down")
+            lines.append("   :icon: eye\n")
+            lines.append("   :class-title: sd-align-major-center sd-fs-6 \n")
+            lines.append("   :class-container: sd-text-info \n")
+            lines.append("\n")
+            lines.append("       .. inheritance-diagram:: " + cls_name)
+            lines.append("           :parts: 2\n")
+            lines.append("\n")
+
+
+def setup(app):
+    app.connect("autodoc-process-docstring", add_diagram)