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Factor out common functionality in HostAxes.twin{,x,y}. #18913

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Merged
merged 1 commit into from
Nov 10, 2020
Merged

Factor out common functionality in HostAxes.twin{,x,y}. #18913

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64 changes: 24 additions & 40 deletions lib/mpl_toolkits/axes_grid1/parasite_axes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -248,21 +248,11 @@ def twinx(self, axes_class=None):
The y-axis of self will have ticks on the left and the returned axes
will have ticks on the right.
"""
if axes_class is None:
axes_class = self._get_base_axes()

parasite_axes_class = parasite_axes_class_factory(axes_class)

ax2 = parasite_axes_class(self, sharex=self)
self.parasites.append(ax2)
ax2._remove_method = self._remove_any_twin

ax = self._add_twin_axes(axes_class, sharex=self)
self.axis["right"].set_visible(False)

ax2.axis["right"].set_visible(True)
ax2.axis["left", "top", "bottom"].set_visible(False)

return ax2
ax.axis["right"].set_visible(True)
ax.axis["left", "top", "bottom"].set_visible(False)
return ax

def twiny(self, axes_class=None):
"""
Expand All @@ -271,21 +261,11 @@ def twiny(self, axes_class=None):
The x-axis of self will have ticks on the bottom and the returned axes
will have ticks on the top.
"""
if axes_class is None:
axes_class = self._get_base_axes()

parasite_axes_class = parasite_axes_class_factory(axes_class)

ax2 = parasite_axes_class(self, sharey=self)
self.parasites.append(ax2)
ax2._remove_method = self._remove_any_twin

ax = self._add_twin_axes(axes_class, sharey=self)
self.axis["top"].set_visible(False)

ax2.axis["top"].set_visible(True)
ax2.axis["left", "right", "bottom"].set_visible(False)

return ax2
ax.axis["top"].set_visible(True)
ax.axis["left", "right", "bottom"].set_visible(False)
return ax

def twin(self, aux_trans=None, axes_class=None):
"""
Expand All @@ -294,23 +274,27 @@ def twin(self, aux_trans=None, axes_class=None):
While self will have ticks on the left and bottom axis, the returned
axes will have ticks on the top and right axis.
"""
if axes_class is None:
axes_class = self._get_base_axes()

parasite_axes_class = parasite_axes_class_factory(axes_class)

if aux_trans is None:
aux_trans = mtransforms.IdentityTransform()
ax2 = parasite_axes_class(self, aux_trans, viewlim_mode="transform")
self.parasites.append(ax2)
ax2._remove_method = self._remove_any_twin

ax = self._add_twin_axes(
axes_class, aux_transform=aux_trans, viewlim_mode="transform")
self.axis["top", "right"].set_visible(False)
ax.axis["top", "right"].set_visible(True)
ax.axis["left", "bottom"].set_visible(False)
return ax

ax2.axis["top", "right"].set_visible(True)
ax2.axis["left", "bottom"].set_visible(False)
def _add_twin_axes(self, axes_class, **kwargs):
"""
Helper for `.twinx`/`.twiny`/`.twin`.

return ax2
*kwargs* are forwarded to the parasite axes constructor.
"""
if axes_class is None:
axes_class = self._get_base_axes()
ax = parasite_axes_class_factory(axes_class)(self, **kwargs)
self.parasites.append(ax)
ax._remove_method = self._remove_any_twin
return ax

def _remove_any_twin(self, ax):
self.parasites.remove(ax)
Expand Down