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allow getting and setting cmaps in image widget #320

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Merged
kushalkolar merged 1 commit into from
Oct 14, 2023
Merged

allow getting and setting cmaps in image widget #320

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28 changes: 28 additions & 0 deletions fastplotlib/widgets/image.py
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,34 @@ def managed_graphics(self) -> List[ImageGraphic]:
iw_managed.append(subplot["image_widget_managed"])
return iw_managed

@property
def cmap(self) -> List[str]:
cmaps = list()
for g in self.managed_graphics:
cmaps.append(g.cmap.name)

return cmaps

@cmap.setter
def cmap(self, names: Union[str, List[str]]):
if isinstance(names, list):
if not all([isinstance(n, str) for n in names]):
raise TypeError(f"Must pass cmap name as a `str` of list of `str`, you have passed:\n{names}")

if not len(names) == len(self.managed_graphics):
raise IndexError(
f"If passing a list of cmap names, the length of the list must be the same as the number of "
f"image widget subplots. You have passed: {len(names)} cmap names and have "
f"{len(self.managed_graphics)} image widget subplots"
)

for name, g in zip(names, self.managed_graphics):
g.cmap = name

elif isinstance(names, str):
for g in self.managed_graphics:
g.cmap = names

@property
def data(self) -> List[np.ndarray]:
"""data currently displayed in the widget"""
Expand Down