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emmamastro wants to merge 3 commits into from
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Labels for PatchCollection do not show #23998 #24042

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c95bd90
PathCollection addition and changes
emmamastro Sep 28, 2022
e494ce4
Merge branch 'matplotlib:main' into emma's-branch
emmamastro Sep 28, 2022
b9f22c4
Patch Collection edits
emmamastro Sep 29, 2022
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1 change: 1 addition & 0 deletions lib/matplotlib/legend.py
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Original file line number Diff line number Diff line change
Expand Up @@ -665,6 +665,7 @@ def draw(self, renderer):
ErrorbarContainer: legend_handler.HandlerErrorbar(),
Line2D: legend_handler.HandlerLine2D(),
Patch: legend_handler.HandlerPatch(),
PathCollection: legend_handler.HandlerPatchCollection(),
StepPatch: legend_handler.HandlerStepPatch(),
LineCollection: legend_handler.HandlerLineCollection(),
RegularPolyCollection: legend_handler.HandlerRegularPolyCollection(),
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32 changes: 32 additions & 0 deletions lib/matplotlib/legend_handler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -328,6 +328,38 @@ def patch_func(legend=legend, orig_handle=orig_handle,
super().__init__(**kwargs)
self._patch_func = patch_func


def _create_patch(self, legend, orig_handle,
xdescent, ydescent, width, height, fontsize):
if self._patch_func is None:
p = Rectangle(xy=(-xdescent, -ydescent),
width=width, height=height)
else:
p = self._patch_func(legend=legend, orig_handle=orig_handle,
xdescent=xdescent, ydescent=ydescent,
width=width, height=height, fontsize=fontsize)
return p

def create_artists(self, legend, orig_handle,
xdescent, ydescent, width, height, fontsize, trans):
p = self._create_patch(legend, orig_handle,
xdescent, ydescent, width, height, fontsize)
self.update_prop(p, orig_handle, legend)
p.set_transform(trans)
return [p]

class HandlerPatchCollection(HandlerBase):
"""
Handler for Collection of `.Patch` instances.
"""
def _default_update_prop(self, legend_handle, orig_handle):
lw = orig_handle.get_linewidths()[0]
dashes = orig_handle._us_linestyles[0]
color = orig_handle.get_colors()[0]
legend_handle.set_color(color)
legend_handle.set_linestyle(dashes)
legend_handle.set_linewidth(lw)

def _create_patch(self, legend, orig_handle,
xdescent, ydescent, width, height, fontsize):
if self._patch_func is None:
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