add layout='none' option to Figure constructor [skip appveyor] [skip actions] [skip azp]

Author: rcomer

lib/matplotlib/figure.py

@@ -2420,15 +2420,15 @@ def __init__(self,
                 The use of this parameter is discouraged. Please use
                 ``layout='constrained'`` instead.
 
-        layout : {'constrained', 'compressed', 'tight', `.LayoutEngine`, None}
+        layout : {'constrained', 'compressed', 'tight', 'none', `.LayoutEngine`, \
+None}, default: None
             The layout mechanism for positioning of plot elements to avoid
             overlapping Axes decorations (labels, ticks, etc). Note that
             layout managers can have significant performance penalties.
-            Defaults to *None*.
 
             - 'constrained': The constrained layout solver adjusts axes sizes
-               to avoid overlapping axes decorations.  Can handle complex plot
-               layouts and colorbars, and is thus recommended.
+              to avoid overlapping axes decorations.  Can handle complex plot
+              layouts and colorbars, and is thus recommended.
 
               See :doc:`/tutorials/intermediate/constrainedlayout_guide`
               for examples.
@@ -2442,6 +2442,8 @@ def __init__(self,
               decorations do not overlap. See `.Figure.set_tight_layout` for
               further details.
 
+            - 'none': Do not use a layout engine.
+
             - A `.LayoutEngine` instance. Builtin layout classes are
               `.ConstrainedLayoutEngine` and `.TightLayoutEngine`, more easily
               accessible by 'constrained' and 'tight'.  Passing an instance

lib/matplotlib/pyplot.py

@@ -740,13 +740,38 @@ def figure(num=None,  # autoincrement if None, else integer from 1-N
     clear : bool, default: False
         If True and the figure already exists, then it is cleared.
 
-    layout : {'constrained', 'tight', 'compressed', \
-        `.LayoutEngine`, None}, default: None
+    layout : {'constrained', 'compressed', 'tight', 'none', `.LayoutEngine`, None}, \
+default: None
         The layout mechanism for positioning of plot elements to avoid
         overlapping Axes decorations (labels, ticks, etc). Note that layout
-        managers can measurably slow down figure display. Defaults to *None*
-        (but see the documentation of the `.Figure` constructor regarding the
-        interaction with rcParams).
+        managers can measurably slow down figure display.
+
+        - 'constrained': The constrained layout solver adjusts axes sizes
+          to avoid overlapping axes decorations.  Can handle complex plot
+          layouts and colorbars, and is thus recommended.
+
+          See :doc:`/tutorials/intermediate/constrainedlayout_guide`
+          for examples.
+
+        - 'compressed': uses the same algorithm as 'constrained', but
+          removes extra space between fixed-aspect-ratio Axes.  Best for
+          simple grids of axes.
+
+        - 'tight': Use the tight layout mechanism. This is a relatively
+          simple algorithm that adjusts the subplot parameters so that
+          decorations do not overlap. See `.Figure.set_tight_layout` for
+          further details.
+
+        - 'none': Do not use a layout engine.
+
+        - A `.LayoutEngine` instance. Builtin layout classes are
+          `.ConstrainedLayoutEngine` and `.TightLayoutEngine`, more easily
+          accessible by 'constrained' and 'tight'.  Passing an instance
+          allows third parties to provide their own layout engine.
+
+        If not given, fall back to using the parameters *tight_layout* and
+        *constrained_layout*, including their config defaults
+        :rc:`figure.autolayout` and :rc:`figure.constrained_layout.use`.
 
     **kwargs
         Additional keyword arguments are passed to the `.Figure` constructor.