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Add contrast limits to histogram plot #198

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Merged
merged 2 commits into from
Jan 11, 2024
Merged

Add contrast limits to histogram plot #198

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c08e158
Add contrast limits to histogram plot
dstansby Jul 26, 2023
49c64a2
Make mypy happy
dstansby Jan 11, 2024
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21 changes: 21 additions & 0 deletions src/napari_matplotlib/histogram.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,23 @@ def __init__(
):
super().__init__(napari_viewer, parent=parent)
self._update_layers(None)
self.viewer.events.theme.connect(self._on_napari_theme_changed)

def on_update_layers(self) -> None:
"""
Called when the selected layers are updated.
"""
super().on_update_layers()
for layer in self.viewer.layers:
layer.events.contrast_limits.connect(self._update_contrast_lims)

def _update_contrast_lims(self) -> None:
for lim, line in zip(
self.layers[0].contrast_limits, self._contrast_lines
):
line.set_xdata(lim)

self.figure.canvas.draw()

def draw(self) -> None:
"""
Expand Down Expand Up @@ -63,6 +80,10 @@ def draw(self) -> None:
else:
self.axes.hist(data.ravel(), bins=bins, label=layer.name)

self._contrast_lines = [
self.axes.axvline(lim, color="white")
for lim in layer.contrast_limits
]
self.axes.legend()


Expand Down