diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
index 38d408ba02c6..1793d9fa8eb5 100644
--- a/lib/matplotlib/backend_bases.py
+++ b/lib/matplotlib/backend_bases.py
@@ -1762,7 +1762,12 @@ def blit(self, bbox=None):
"""Blit the canvas in bbox (default entire canvas)."""
def resize(self, w, h):
- """Set the canvas size in pixels."""
+ """
+ UNUSED: Set the canvas size in pixels.
+
+ Certain backends may implement a similar method internally, but this is
+ not a requirement of, nor is it used by, Matplotlib itself.
+ """
def draw_event(self, renderer):
"""Pass a `DrawEvent` to all functions connected to ``draw_event``."""
@@ -2815,7 +2820,7 @@ def full_screen_toggle(self):
pass
def resize(self, w, h):
- """For GUI backends, resize the window (in pixels)."""
+ """For GUI backends, resize the window (in physical pixels)."""
@_api.deprecated(
"3.4", alternative="self.canvas.callbacks.process(event.name, event)")
diff --git a/lib/matplotlib/backends/backend_gtk3.py b/lib/matplotlib/backends/backend_gtk3.py
index bca921f03794..aad634314cf9 100644
--- a/lib/matplotlib/backends/backend_gtk3.py
+++ b/lib/matplotlib/backends/backend_gtk3.py
@@ -421,6 +421,8 @@ def set_window_title(self, title):
def resize(self, width, height):
"""Set the canvas size in pixels."""
+ width = int(width / self.canvas.device_pixel_ratio)
+ height = int(height / self.canvas.device_pixel_ratio)
if self.toolbar:
toolbar_size = self.toolbar.size_request()
height += toolbar_size.height
diff --git a/lib/matplotlib/backends/backend_gtk4.py b/lib/matplotlib/backends/backend_gtk4.py
index 6ddcaaa18bbb..fd2b44e3f27e 100644
--- a/lib/matplotlib/backends/backend_gtk4.py
+++ b/lib/matplotlib/backends/backend_gtk4.py
@@ -373,18 +373,13 @@ def set_window_title(self, title):
def resize(self, width, height):
"""Set the canvas size in pixels."""
+ width = int(width / self.canvas.device_pixel_ratio)
+ height = int(height / self.canvas.device_pixel_ratio)
if self.toolbar:
- toolbar_size = self.toolbar.size_request()
- height += toolbar_size.height
+ min_size, nat_size = self.toolbar.get_preferred_size()
+ height += nat_size.height
canvas_size = self.canvas.get_allocation()
- if canvas_size.width == canvas_size.height == 1:
- # A canvas size of (1, 1) cannot exist in most cases, because
- # window decorations would prevent such a small window. This call
- # must be before the window has been mapped and widgets have been
- # sized, so just change the window's starting size.
- self.window.set_default_size(width, height)
- else:
- self.window.resize(width, height)
+ self.window.set_default_size(width, height)
class NavigationToolbar2GTK4(_NavigationToolbar2GTK, Gtk.Box):
diff --git a/lib/matplotlib/backends/backend_qt.py b/lib/matplotlib/backends/backend_qt.py
index 6bb1f82c0f24..d836ca84c356 100644
--- a/lib/matplotlib/backends/backend_qt.py
+++ b/lib/matplotlib/backends/backend_qt.py
@@ -589,8 +589,10 @@ def _get_toolbar(self, canvas, parent):
return toolbar
def resize(self, width, height):
- # these are Qt methods so they return sizes in 'virtual' pixels
- # so we do not need to worry about dpi scaling here.
+ # The Qt methods return sizes in 'virtual' pixels so we do need to
+ # rescale from physical to logical pixels.
+ width = int(width / self.canvas.device_pixel_ratio)
+ height = int(height / self.canvas.device_pixel_ratio)
extra_width = self.window.width() - self.canvas.width()
extra_height = self.window.height() - self.canvas.height()
self.canvas.resize(width, height)
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
index 5f212043c6c9..ffbb486a139d 100644
--- a/lib/matplotlib/figure.py
+++ b/lib/matplotlib/figure.py
@@ -2658,10 +2658,9 @@ def set_size_inches(self, w, h=None, forward=True):
if forward:
canvas = getattr(self, 'canvas')
if canvas is not None:
- dpi_ratio = getattr(canvas, '_dpi_ratio', 1)
manager = getattr(canvas, 'manager', None)
if manager is not None:
- manager.resize(*(size * self.dpi / dpi_ratio).astype(int))
+ manager.resize(*(size * self.dpi).astype(int))
self.stale = True
def get_size_inches(self):
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