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plotter-app/venv/lib/python3.8/site-packages/matplotlib/backends/backend_wxcairo.py

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+import wx.lib.wxcairo as wxcairo
+
+from .. import _api
+from .backend_cairo import cairo, FigureCanvasCairo
+from .backend_wx import _BackendWx, _FigureCanvasWxBase, FigureFrameWx
+from .backend_wx import (  # noqa: F401 # pylint: disable=W0611
+    NavigationToolbar2Wx as NavigationToolbar2WxCairo)
+
+
+@_api.deprecated(
+    "3.6", alternative="FigureFrameWx(..., canvas_class=FigureCanvasWxCairo)")
+class FigureFrameWxCairo(FigureFrameWx):
+    def get_canvas(self, fig):
+        return FigureCanvasWxCairo(self, -1, fig)
+
+
+class FigureCanvasWxCairo(FigureCanvasCairo, _FigureCanvasWxBase):
+    """
+    The FigureCanvas contains the figure and does event handling.
+
+    In the wxPython backend, it is derived from wxPanel, and (usually) lives
+    inside a frame instantiated by a FigureManagerWx. The parent window
+    probably implements a wxSizer to control the displayed control size - but
+    we give a hint as to our preferred minimum size.
+    """
+
+    def draw(self, drawDC=None):
+        size = self.figure.bbox.size.astype(int)
+        surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, *size)
+        self._renderer.set_context(cairo.Context(surface))
+        self._renderer.dpi = self.figure.dpi
+        self.figure.draw(self._renderer)
+        self.bitmap = wxcairo.BitmapFromImageSurface(surface)
+        self._isDrawn = True
+        self.gui_repaint(drawDC=drawDC)
+
+
+@_BackendWx.export
+class _BackendWxCairo(_BackendWx):
+    FigureCanvas = FigureCanvasWxCairo