Backport PR #2949: delay callback when calling previous zoom (#3085)

Co-authored-by: Kyle Conroy <kyleconroy@gmail.com>
spacetelescope · Jul 11, 2024 · f44909e · f44909e
1 parent 673593d
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diff --git a/CHANGES.rst b/CHANGES.rst
@@ -6,6 +6,8 @@ Bug Fixes
 
 - Fixes exporting the stretch histogram from Plot Options before the Plot Options plugin is ever opened. [#2934]
 
+- Previous zoom tool is optimized to only issue one zoom update to the viewer. [#2949]
+
 Cubeviz
 ^^^^^^^
 

diff --git a/jdaviz/core/tools.py b/jdaviz/core/tools.py
@@ -149,7 +149,8 @@ def activate(self):
             return
         prev_limits = self.viewer._prev_limits
         self.save_prev_zoom()
-        self.viewer.state.x_min, self.viewer.state.x_max, self.viewer.state.y_min, self.viewer.state.y_max = prev_limits  # noqa
+        with delay_callback(self.viewer.state, 'x_min', 'x_max', 'y_min', 'y_max'):
+            self.viewer.state.x_min, self.viewer.state.x_max, self.viewer.state.y_min, self.viewer.state.y_max = prev_limits  # noqa
 
 
 @viewer_tool
-Original file line number
+Diff line change
@@ Expand Up / @@ -6,6 +6,8 @@ Bug Fixes @@
     - Fixes exporting the stretch histogram from Plot Options before the Plot Options plugin is ever opened. [#2934]
+    - Previous zoom tool is optimized to only issue one zoom update to the viewer. [#2949]
     Cubeviz
     ^^^^^^^
@@ Expand Down @@