Make the save_figure methods consistent with the base class signature.

Fix a call to save_figure in backend_bases.py. This bug caused the
keypress_demo.py example to fail on all backends except those based on GTK.
The bug was reported by David Arnold on the mailing list on February 14, 2010.

svn path=/trunk/matplotlib/; revision=8141

Author: mdehoon

lib/matplotlib/backend_bases.py

@@ -1923,7 +1923,7 @@ def key_press(self, event):
             self.canvas.toolbar.zoom()
         # saving current figure (default key 's')
         elif event.key in save_keys:
-            self.canvas.toolbar.save_figure(self.canvas.toolbar)
+            self.canvas.toolbar.save_figure()
 
         if event.inaxes is None:
             return

lib/matplotlib/backends/backend_gtk.py

@@ -653,7 +653,7 @@ def get_filechooser(self):
             filetypes=self.canvas.get_supported_filetypes(),
             default_filetype=self.canvas.get_default_filetype())
 
-    def save_figure(self, button):
+    def save_figure(self, *args):
         fname, format = self.get_filechooser().get_filename_from_user()
         if fname:
             try:
@@ -908,7 +908,7 @@ def get_filechooser(self):
             filetypes=self.canvas.get_supported_filetypes(),
             default_filetype=self.canvas.get_default_filetype())
 
-    def save_figure(self, button):
+    def save_figure(self, *args):
         fname, format = self.get_filechooser().get_filename_from_user()
         if fname:
             try:

lib/matplotlib/backends/backend_macosx.py

@@ -392,7 +392,7 @@ def zoomy(self, direction):
             axes[i].yaxis.zoom(direction)
         self.canvas.invalidate()
 
-    def save_figure(self):
+    def save_figure(self, *args):
         filename = _macosx.choose_save_file('Save the figure')
         if filename is None: # Cancel
             return
@@ -416,7 +416,7 @@ def release(self, event):
     def set_cursor(self, cursor):
         _macosx.set_cursor(cursor)
 
-    def save_figure(self):
+    def save_figure(self, *args):
         filename = _macosx.choose_save_file('Save the figure')
         if filename is None: # Cancel
             return

lib/matplotlib/backends/backend_qt.py

@@ -422,7 +422,7 @@ def configure_subplots(self):
     def _get_canvas(self, fig):
         return FigureCanvasQT(fig)
 
-    def save_figure( self ):
+    def save_figure(self, *args):
         filetypes = self.canvas.get_supported_filetypes_grouped()
         sorted_filetypes = filetypes.items()
         sorted_filetypes.sort()

lib/matplotlib/backends/backend_qt4.py

@@ -431,7 +431,7 @@ def configure_subplots(self):
     def _get_canvas(self, fig):
         return FigureCanvasQT(fig)
 
-    def save_figure( self ):
+    def save_figure(self, *args):
         filetypes = self.canvas.get_supported_filetypes_grouped()
         sorted_filetypes = filetypes.items()
         sorted_filetypes.sort()

lib/matplotlib/backends/backend_tkagg.py

@@ -576,7 +576,7 @@ def zoomy(self, direction):
             a.yaxis.zoom(direction)
         self.canvas.draw()
 
-    def save_figure(self):
+    def save_figure(self, *args):
         fs = FileDialog.SaveFileDialog(master=self.window,
                                        title='Save the figure')
         try:
@@ -703,7 +703,7 @@ def configure_subplots(self):
         canvas.show()
         canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
 
-    def save_figure(self):
+    def save_figure(self, *args):
         from tkFileDialog import asksaveasfilename
         from tkMessageBox import showerror
         filetypes = self.canvas.get_supported_filetypes().copy()