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FIX: Stop tight layout collapsing under zoom #11742

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FIX: Stop tight layout collapsing under zoom #11742

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11 changes: 10 additions & 1 deletion lib/matplotlib/tight_layout.py
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Original file line number Diff line number Diff line change
Expand Up @@ -176,11 +176,13 @@ def auto_adjust_subplotpars(
margin_right = 0.4999
warnings.warn('The left and right margins cannot be made large '
'enough to accommodate all axes decorations. ')
return None
if margin_bottom + margin_top >= 1:
margin_bottom = 0.4999
margin_top = 0.4999
warnings.warn('The bottom and top margins cannot be made large '
'enough to accommodate all axes decorations. ')
return None

kwargs = dict(left=margin_left,
right=1 - margin_right,
Expand Down Expand Up @@ -302,7 +304,10 @@ def get_tight_layout_figure(fig, axes_list, subplotspec_list, renderer,
for ax, subplotspec in zip(axes_list, subplotspec_list):
if subplotspec is None:
continue

# spines have a problem under zoom; CL ignores zoom events. TL
# ignores spines...
for spine in ['left', 'right', 'bottom', 'top']:
ax.spines[spine].set_in_layout(False)
subplots = subplot_dict.setdefault(subplotspec, [])

if not subplots:
Expand Down Expand Up @@ -354,6 +359,8 @@ def get_tight_layout_figure(fig, axes_list, subplotspec_list, renderer,
subplot_list=subplot_list,
ax_bbox_list=ax_bbox_list,
pad=pad, h_pad=h_pad, w_pad=w_pad)
if kwargs is None:
return None

if rect is not None:
# if rect is given, the whole subplots area (including
Expand Down Expand Up @@ -384,5 +391,7 @@ def get_tight_layout_figure(fig, axes_list, subplotspec_list, renderer,
ax_bbox_list=ax_bbox_list,
pad=pad, h_pad=h_pad, w_pad=w_pad,
rect=(left, bottom, right, top))
if kwargs is None:
return None

return kwargs