Also handle the Cairo backends.

anntzer · anntzer · commit adb8589ece4a · 2017-05-31T15:23:19.000-07:00
The wait cursor is not animated, though.
diff --git a/lib/matplotlib/backends/backend_gtk.py b/lib/matplotlib/backends/backend_gtk.py
@@ -29,8 +29,9 @@ def fn_name(): return sys._getframe(1).f_code.co_name
 
 import matplotlib
 from matplotlib._pylab_helpers import Gcf
-from matplotlib.backend_bases import RendererBase, GraphicsContextBase, \
-     FigureManagerBase, FigureCanvasBase, NavigationToolbar2, cursors, TimerBase
+from matplotlib.backend_bases import (
+    RendererBase, GraphicsContextBase, FigureManagerBase, FigureCanvasBase,
+    NavigationToolbar2, TimerBase, cursors)
 from matplotlib.backend_bases import ShowBase
 
 from matplotlib.backends.backend_gdk import RendererGDK, FigureCanvasGDK
@@ -441,6 +442,9 @@ def expose_event(self, widget, event):
         """
         if _debug: print('FigureCanvasGTK.%s' % fn_name())
 
+        toolbar = self.toolbar
+        if toolbar:
+            toolbar.set_cursor(cursors.WAIT)
         if GTK_WIDGET_DRAWABLE(self):
             if self._need_redraw:
                 x, y, w, h = self.allocation
@@ -451,6 +455,8 @@ def expose_event(self, widget, event):
             x, y, w, h = event.area
             self.window.draw_drawable (self.style.fg_gc[self.state],
                                        self._pixmap, x, y, x, y, w, h)
+        if toolbar:
+            toolbar.set_cursor(cursors.POINTER)
         return False  # finish event propagation?
 
     filetypes = FigureCanvasBase.filetypes.copy()
diff --git a/lib/matplotlib/backends/backend_gtk3cairo.py b/lib/matplotlib/backends/backend_gtk3cairo.py
@@ -3,9 +3,9 @@
 
 import six
 
-from . import backend_gtk3
-from . import backend_cairo
+from . import backend_cairo, backend_gtk3
 from .backend_cairo import cairo, HAS_CAIRO_CFFI
+from matplotlib.backend_bases import cursors
 from matplotlib.figure import Figure
 
 class RendererGTK3Cairo(backend_cairo.RendererCairo):
@@ -39,10 +39,15 @@ def on_draw_event(self, widget, ctx):
         # the _need_redraw flag doesnt work. it sometimes prevents
         # the rendering and leaving the canvas blank
         #if self._need_redraw:
+        toolbar = self.toolbar
+        if toolbar:
+            toolbar.set_cursor(cursors.WAIT)
         self._renderer.set_context(ctx)
         allocation = self.get_allocation()
         x, y, w, h = allocation.x, allocation.y, allocation.width, allocation.height
         self._render_figure(w, h)
+        if toolbar:
+            toolbar.set_cursor(cursors.POINTER)
         #self._need_redraw = False
 
         return False  # finish event propagation?
