Merge pull request #18027 from meeseeksmachine/auto-backport-of-pr-17981-on-v3.3.x

timhoffm · web-flow · commit be26359ff469 · 2020-07-23T01:53:20.000+02:00
Backport PR #17981 on branch v3.3.x (gtk: Fix `draw` on unmapped windows.)
diff --git a/lib/matplotlib/backends/backend_gtk3.py b/lib/matplotlib/backends/backend_gtk3.py
@@ -539,8 +539,10 @@ def set_message(self, s):
         self.message.set_label(s)
 
     def set_cursor(self, cursor):
-        self.canvas.get_property("window").set_cursor(cursord[cursor])
-        Gtk.main_iteration()
+        window = self.canvas.get_property("window")
+        if window is not None:
+            window.set_cursor(cursord[cursor])
+            Gtk.main_iteration()
 
     def draw_rubberband(self, event, x0, y0, x1, y1):
         height = self.canvas.figure.bbox.height
diff --git a/lib/matplotlib/backends/backend_gtk3agg.py b/lib/matplotlib/backends/backend_gtk3agg.py
@@ -67,8 +67,7 @@ def blit(self, bbox=None):
         self.queue_draw_area(x, y, width, height)
 
     def draw(self):
-        if self.get_visible() and self.get_mapped():
-            backend_agg.FigureCanvasAgg.draw(self)
+        backend_agg.FigureCanvasAgg.draw(self)
         super().draw()
 
     def print_png(self, filename, *args, **kwargs):
