Fix contrast range update issue when changing image Z axis bounds

Author: PierreRaybaut

CHANGELOG.md

@@ -44,6 +44,8 @@ In this release, test coverage is 79%.
     using the "Minimum value" or "Maximum value" buttons (which have been renamed to
     "Min." and "Max." in this release)
   * Histogram range was not updated when the "Set full range" button was clicked
+* Image parameters: contrast range was not updated when the image Z axis bounds were
+  changed using the "Parameters" dialog
 
 🧹 API cleanup:
 

plotpy/panels/contrastadjustment.py

@@ -102,6 +102,9 @@ def connect_plot(self, plot: BasePlot) -> None:
         plot.SIG_ITEM_SELECTION_CHANGED.connect(self.selection_changed)
         plot.SIG_ITEM_REMOVED.connect(self.item_removed)
         plot.SIG_ACTIVE_ITEM_CHANGED.connect(self.active_item_changed)
+        plot.SIG_AXIS_PARAMETERS_CHANGED.connect(
+            lambda axis_id: self.axis_parameters_changed(plot=plot, axis_id=axis_id)
+        )
 
     def tracked_items_gen(
         self,
@@ -242,6 +245,16 @@ def active_item_changed(self, plot: BasePlot) -> None:
             self.range.set_range(_m, _M, dosignal=False)
         self.replot()
 
+    def axis_parameters_changed(self, plot: BasePlot, axis_id: int) -> None:
+        """Plot axis parameters changed callback
+
+        Args:
+            axis_id: axis ID
+        """
+        if axis_id == BasePlot.Y_RIGHT:
+            # Colormap bounds changed, we need to update the range accordingly:
+            self.active_item_changed(plot)
+
     def set_range_style(self, multiple_ranges: bool) -> None:
         """Set range style
 

plotpy/styles/axes.py

@@ -197,6 +197,8 @@ def update_item(self, item: BaseImageItem) -> None:
         plot.set_plot_limits(self.xmin, self.xmax, self.ymin, self.ymax)
         item.set_lut_range([self.zmin, self.zmax])
         plot.update_colormap_axis(item)
+        for axis_id in (plot.X_BOTTOM, plot.Y_LEFT, plot.Y_RIGHT):
+            plot.SIG_AXIS_PARAMETERS_CHANGED.emit(axis_id)
 
     # TODO: remove this method in a future release
     def update_axes(self, obj: BaseImageItem) -> None: