Merge pull request #5 from eslothower/task3

Ebot101 · web-flow · commit b7229c59dde8 · 2023-05-06T15:53:54.000-04:00
Groundwork for task 3, plotting with function(x,y), test file for task 3, bug fixes
diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
@@ -3016,12 +3016,21 @@ def mouse_move(self, event):
         self.set_message(self._mouse_event_to_message(event))
 
         if callable(getattr(self, 'set_hover_message', None)):
-            def nonrect(x):
-                return not isinstance(x, Rectangle)
-            for a in self.canvas.figure.findobj(match=nonrect, include_self=False):
-                inside, prop = a.contains(event)
+            for a in self.canvas.figure.findobj(match=lambda x: not isinstance(x,
+                                                Rectangle), include_self=False):
+                inside = a.contains(event)
                 if inside:
-                    self.set_hover_message(self._mouse_event_to_message(event))
+                    if a.hoverable():
+                        hover = a.get_hover()
+                        if callable(hover):
+                            newX, newY = hover(event)
+                            (self.set_hover_message("modified x = " + str(newX)
+                                                    + " modified y = " +
+                                                    str(newY) +
+                                                    "         Original coords: "
+                                                    ))
+                        else:
+                            self.set_hover_message(self._mouse_event_to_message(event))
                 else:
                     self.set_hover_message("")
                 break
diff --git a/lib/matplotlib/tests/test_toolkit.py b/lib/matplotlib/tests/test_toolkit.py
@@ -0,0 +1,24 @@
+import matplotlib
+import matplotlib.pyplot as plt
+from numpy.random import rand
+matplotlib.use('tkagg')
+
+
+# Run this if it seems like your chanegs aren't being applied. If this does not
+# print something along the lines of:
+#   3.8.0.dev898+g0a062ed8bf.d20230506 /Users/eslothower/Desktop/matplotlib/lib/
+#   matplotlib/__init__.py
+# then this means you did not set up matplotlib for development:
+#   https://matplotlib.org/stable/devel/development_setup.html
+
+# print(matplotlib.__version__, matplotlib.__file__)
+
+fig, ax = plt.subplots()
+plt.ylabel('some numbers')
+
+
+def user_defined_function(event):
+    return round(event.xdata * 10, 1), round(event.ydata + 3, 3)
+
+ax.plot(rand(100), 'o', hover=user_defined_function)
+plt.show()
