code: def resize_event(self, area, width, height):
      self._update_device_pixel_ratio()
      dpi = self.figure.dpi
      winch = width * self.device_pixel_ratio / dpi
      hinch = height * self.device_pixel_ratio / dpi
      self.figure.set_size_inches(winch, hinch, forward=False)
      ResizeEvent("resize_event", self)._process()
      self.draw_idle()
  
imports: import functools
  import io
  import os
  import matplotlib
  from matplotlib import _api, backend_tools, cbook
  from matplotlib.backend_bases import ToolContainerBase, KeyEvent, LocationEvent, MouseEvent, ResizeEvent, CloseEvent
  from gi.repository import Gio, GLib, Gtk, Gdk, GdkPixbuf
  from .None import _backend_gtk
  from ._backend_gtk import _BackendGTK, _FigureCanvasGTK, _FigureManagerGTK, _NavigationToolbar2GTK, TimerGTK
label_desc: Use image node_id 13 for calling the FigureCanvasGTK4 obj's underlying member method code with example usage: obj.resize_event(area, width, height) without return types