diff --git a/galleries/examples/user_interfaces/embedding_in_gtk4_panzoom_sgskip.py b/galleries/examples/user_interfaces/embedding_in_gtk4_panzoom_sgskip.py
index e42e59459198..aeb5d7562f58 100644
--- a/galleries/examples/user_interfaces/embedding_in_gtk4_panzoom_sgskip.py
+++ b/galleries/examples/user_interfaces/embedding_in_gtk4_panzoom_sgskip.py
@@ -44,10 +44,9 @@ 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)
diff --git a/galleries/examples/user_interfaces/embedding_in_gtk4_sgskip.py b/galleries/examples/user_interfaces/embedding_in_gtk4_sgskip.py
index 197cd7971088..e393658c25e8 100644
--- a/galleries/examples/user_interfaces/embedding_in_gtk4_sgskip.py
+++ b/galleries/examples/user_interfaces/embedding_in_gtk4_sgskip.py
@@ -39,7 +39,7 @@ 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')
diff --git a/lib/matplotlib/backends/backend_gtk4.py b/lib/matplotlib/backends/backend_gtk4.py
index 620c9e5b94b6..cd38968779ed 100644
--- a/lib/matplotlib/backends/backend_gtk4.py
+++ b/lib/matplotlib/backends/backend_gtk4.py
@@ -30,6 +30,7 @@
)
_GOBJECT_GE_3_47 = gi.version_info >= (3, 47, 0)
+_GTK_GE_4_12 = Gtk.check_version(4, 12, 0) is None
class FigureCanvasGTK4(_FigureCanvasGTK, Gtk.DrawingArea):
@@ -48,7 +49,10 @@ def __init__(self, figure=None):
self.set_draw_func(self._draw_func)
self.connect('resize', self.resize_event)
- self.connect('notify::scale-factor', self._update_device_pixel_ratio)
+ if _GTK_GE_4_12:
+ self.connect('realize', self._realize_event)
+ else:
+ self.connect('notify::scale-factor', self._update_device_pixel_ratio)
click = Gtk.GestureClick()
click.set_button(0) # All buttons.
@@ -237,10 +241,20 @@ def _get_key(self, keyval, keycode, state):
and not (mod == "shift" and unikey.isprintable()))]
return "+".join([*mods, key])
+ def _realize_event(self, obj):
+ surface = self.get_native().get_surface()
+ surface.connect('notify::scale', self._update_device_pixel_ratio)
+ self._update_device_pixel_ratio()
+
def _update_device_pixel_ratio(self, *args, **kwargs):
# We need to be careful in cases with mixed resolution displays if
# device_pixel_ratio changes.
- if self._set_device_pixel_ratio(self.get_scale_factor()):
+ if _GTK_GE_4_12:
+ scale = self.get_native().get_surface().get_scale()
+ else:
+ scale = self.get_scale_factor()
+ assert scale is not None
+ if self._set_device_pixel_ratio(scale):
self.draw()
def _draw_rubberband(self, rect):
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