Sep 5, 2018 · Sep 5, 2018
diff --git a/lib/matplotlib/backends/backend_gtk3agg.py b/lib/matplotlib/backends/backend_gtk3agg.py
 import numpy as np

 from .. import cbook
 from . import backend_agg, backend_cairo, backend_gtk3
 from .backend_cairo import cairo
 from .backend_gtk3 import Gtk, _BackendGTK3
            width = int(bbox.x1) - int(bbox.x0)
            height = int(bbox.y1) - int(bbox.y0)

            buf =backend_cairo._unmultipled_rgba8888_to_premultiplied_argb32(
            buf =cbook._unmultipled_rgba8888_to_premultiplied_argb32(
                np.asarray(self.copy_from_bbox(bbox)))
            image = cairo.ImageSurface.create_for_data(
                buf.ravel().data, cairo.FORMAT_ARGB32, width, height)
Original file line number	Diff line number	Diff line change
		@@ -1,5 +1,6 @@
		import numpy as np

		from .. import cbook
		from . import backend_agg, backend_cairo, backend_gtk3
		from .backend_cairo import cairo
		from .backend_gtk3 import Gtk, _BackendGTK3
Expand DownExpand Up		@@ -42,7 +43,7 @@ def on_draw_event(self, widget, ctx):
		width = int(bbox.x1) - int(bbox.x0)
		height = int(bbox.y1) - int(bbox.y0)

		buf =backend_cairo._unmultipled_rgba8888_to_premultiplied_argb32(
		buf =cbook._unmultipled_rgba8888_to_premultiplied_argb32(
		np.asarray(self.copy_from_bbox(bbox)))
		image = cairo.ImageSurface.create_for_data(
		buf.ravel().data, cairo.FORMAT_ARGB32, width, height)
Expand Down