From 6606af991b15174cbdbaca738669a21461b0fbe6 Mon Sep 17 00:00:00 2001
From: Tom Rondeau
Date: Sat, 1 May 2010 19:06:13 -0400
Subject: Fixes the replotting update. It's now based on a QTimer so it's in
 the event buffer as opposed to a best effort based on a hand-made timer. The
 interval between GUI updates is settable through the qtsink_X objects with
 set_update_time(newtime). This update makes the plotting much more stable. It
 also fixes the time scale of the waterfall plot to actually mean the right
 thing.

---
 gr-qtgui/src/lib/qtgui_sink_c.cc | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'gr-qtgui/src/lib/qtgui_sink_c.cc')

diff --git a/gr-qtgui/src/lib/qtgui_sink_c.cc b/gr-qtgui/src/lib/qtgui_sink_c.cc
index 7340141a6..fefa98704 100644
--- a/gr-qtgui/src/lib/qtgui_sink_c.cc
+++ b/gr-qtgui/src/lib/qtgui_sink_c.cc
@@ -145,6 +145,9 @@ qtgui_sink_c::initialize(const bool opengl)
 				 d_plotconst,
 				 opengl);
 
+  // initialize update time to 10 times a second
+  set_update_time(0.1);
+
   d_object = new qtgui_obj(d_qApplication);
   qApp->postEvent(d_object, new qtgui_event(&d_pmutex));
 }
@@ -207,6 +210,13 @@ qtgui_sink_c::set_frequency_axis(double min, double max)
   d_main_gui->SetFrequencyAxis(min, max);
 }
 
+void
+qtgui_sink_c::set_update_time(double t)
+{
+  d_update_time = t;
+  d_main_gui->SetUpdateTime(d_update_time);
+}
+
 void
 qtgui_sink_c::fft(const gr_complex *data_in, int size)
 {
@@ -300,7 +310,7 @@ qtgui_sink_c::general_work (int noutput_items,
       
       d_main_gui->UpdateWindow(true, d_fft->get_outbuf(), d_fftsize,
 			       NULL, 0, (float*)d_residbuf, d_fftsize,
-			       1.0/4.0, currentTime, true);
+			       currentTime, true);
     }
     // Otherwise, copy what we received into the residbuf for next time
     else {
-- 
cgit