Remove unused _needs_redraw from gtk3 backends.

anntzer · anntzer · commit 12301033ec1d · 2017-06-27T02:10:07.000-07:00
diff --git a/lib/matplotlib/backends/backend_gtk3.py b/lib/matplotlib/backends/backend_gtk3.py
@@ -186,7 +186,6 @@ def __init__(self, figure):
         GObject.GObject.__init__(self)
 
         self._idle_draw_id  = 0
-        self._need_redraw   = True
         self._lastCursor    = None
 
         self.connect('scroll_event',         self.scroll_event)
@@ -299,20 +298,16 @@ def configure_event(self, widget, event):
         w, h = event.width, event.height
         if w < 3 or h < 3:
             return # empty fig
-
         # resize the figure (in inches)
         dpi = self.figure.dpi
         self.figure.set_size_inches(w/dpi, h/dpi, forward=False)
-        self._need_redraw = True
-
         return False  # finish event propagation?
 
     def on_draw_event(self, widget, ctx):
         # to be overwritten by GTK3Agg or GTK3Cairo
         pass
 
     def draw(self):
-        self._need_redraw = True
         if self.get_visible() and self.get_mapped():
             self.queue_draw()
             # do a synchronous draw (its less efficient than an async draw,
diff --git a/lib/matplotlib/backends/backend_gtk3agg.py b/lib/matplotlib/backends/backend_gtk3agg.py
@@ -38,11 +38,8 @@ def on_draw_event(self, widget, ctx):
         w, h = allocation.width, allocation.height
 
         if not len(self._bbox_queue):
-            if self._need_redraw:
-                self._render_figure(w, h)
-                bbox_queue = [transforms.Bbox([[0, 0], [w, h]])]
-            else:
-                return
+            self._render_figure(w, h)
+            bbox_queue = [transforms.Bbox([[0, 0], [w, h]])]
         else:
             bbox_queue = self._bbox_queue
 
diff --git a/lib/matplotlib/backends/backend_gtk3cairo.py b/lib/matplotlib/backends/backend_gtk3cairo.py
@@ -36,15 +36,10 @@ def _render_figure(self, width, height):
     def on_draw_event(self, widget, ctx):
         """ GtkDrawable draw event, like expose_event in GTK 2.X
         """
-        # the _need_redraw flag doesnt work. it sometimes prevents
-        # the rendering and leaving the canvas blank
-        #if self._need_redraw:
         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)
-        #self._need_redraw = False
-
         return False  # finish event propagation?
 
 
