automatic store for empty traces on enable

diff --git a/gr-wxgui/src/python/fft_window.py b/gr-wxgui/src/python/fft_window.py
index 87712b1e242abd5e56e46b82b7cd596e1c6f2d77..0529e6a5d6d77eb2070fbda7468fa2c1cecb1fb8 100644 (file)
--- a/gr-wxgui/src/python/fft_window.py
+++ b/gr-wxgui/src/python/fft_window.py
@@ -210,11 +210,18 @@ class fft_window(wx.Panel, pubsub.pubsub):
                                        self._traces[my_trace] = self.samples
                                        self.update_grid()
                                return store_trace
+                       def new_toggle_trace(my_trace):
+                               def toggle_trace(toggle):
+                                       #do an automatic store if toggled on and empty trace
+                                       if toggle and not len(self._traces[my_trace]):
+                                               self._traces[my_trace] = self.samples
+                                       self.update_grid()
+                               return toggle_trace
                        self._traces[trace] = EMPTY_TRACE
                        self[TRACE_STORE_KEY+trace] = False
-                       self[TRACE_SHOW_KEY+trace] = True
+                       self[TRACE_SHOW_KEY+trace] = False
                        self.subscribe(TRACE_STORE_KEY+trace, new_store_trace(trace))
-                       self.subscribe(TRACE_SHOW_KEY+trace, self.update_grid)
+                       self.subscribe(TRACE_SHOW_KEY+trace, new_toggle_trace(trace))
                #init panel and plot
                wx.Panel.__init__(self, parent, style=wx.SIMPLE_BORDER)
                self.plotter = plotter.channel_plotter(self)