DOC: Fix deprecations in GTK4 embedding examples

Author: QuLogic

galleries/examples/user_interfaces/embedding_in_gtk4_panzoom_sgskip.py

@@ -13,10 +13,8 @@
 
 import numpy as np
 
-from matplotlib.backends.backend_gtk4 import \
-    NavigationToolbar2GTK4 as NavigationToolbar
-from matplotlib.backends.backend_gtk4agg import \
-    FigureCanvasGTK4Agg as FigureCanvas
+from matplotlib.backends.backend_gtk4 import NavigationToolbar2GTK4 as NavigationToolbar
+from matplotlib.backends.backend_gtk4agg import FigureCanvasGTK4Agg as FigureCanvas
 from matplotlib.figure import Figure
 
 
@@ -44,10 +42,9 @@ def on_activate(app):
     toolbar = NavigationToolbar(canvas)
     vbox.append(toolbar)
 
-    win.show()
+    win.present()
 
 
-app = Gtk.Application(
-    application_id='org.matplotlib.examples.EmbeddingInGTK4PanZoom')
+app = Gtk.Application(application_id='org.matplotlib.examples.EmbeddingInGTK4PanZoom')
 app.connect('activate', on_activate)
 app.run(None)

galleries/examples/user_interfaces/embedding_in_gtk4_sgskip.py

@@ -14,8 +14,7 @@
 
 import numpy as np
 
-from matplotlib.backends.backend_gtk4agg import \
-    FigureCanvasGTK4Agg as FigureCanvas
+from matplotlib.backends.backend_gtk4agg import FigureCanvasGTK4Agg as FigureCanvas
 from matplotlib.figure import Figure
 
 
@@ -39,7 +38,7 @@ def on_activate(app):
     canvas.set_size_request(800, 600)
     sw.set_child(canvas)
 
-    win.show()
+    win.present()
 
 
 app = Gtk.Application(application_id='org.matplotlib.examples.EmbeddingInGTK4')