Fullscreen rather than maximize in Tk. Added fullscreen support to qt4 backend.

Author: Phil Elson

lib/matplotlib/backends/backend_qt4.py

@@ -383,6 +383,12 @@ def _show_message(self,s):
         # Fixes a PySide segfault.
         self.window.statusBar().showMessage(s)
 
+    def full_screen_toggle(self):
+       if self.window.isFullScreen():
+           self.window.showNormal()    
+       else:
+           self.window.showFullScreen()
+
     def _widgetclosed( self ):
         if self.window._destroying: return
         self.window._destroying = True
@@ -394,7 +400,6 @@ def _widgetclosed( self ):
             # Gcf can get destroyed before the Gcf.destroy
             # line is run, leading to a useless AttributeError.
 
-
     def _get_toolbar(self, canvas, parent):
         # must be inited after the window, drawingArea and figure
         # attrs are set

lib/matplotlib/backends/backend_tkagg.py

@@ -529,9 +529,8 @@ def set_window_title(self, title):
         self.window.wm_title(title)
 
     def full_screen_toggle(self):
-        # cross platform way of maximizing a tk window
-        # http://devourer09.blogspot.co.uk/2009/07/maximizing-tkinter-app.html
-        self.window.attributes('-zoomed', '1')
+        is_fullscreen = bool(self.window.attributes('-fullscreen'))
+        self.window.attributes('-fullscreen', not is_fullscreen)
 
 
 class AxisMenu:
@@ -919,4 +918,4 @@ def hidetip(self):
         tw = self.tipwindow
         self.tipwindow = None
         if tw:
-            tw.destroy()
+            tw.destroy()