qtgui: fixed histogram autoscaling features. Added example script.

author: Tom Rondeau <tom@trondeau.com> 2013-10-22 14:03:39 -0400
committer: Tom Rondeau <tom@trondeau.com> 2013-10-29 12:23:09 -0400
commit: ccb5384d759d8736e596574be770ad36222ef4a1 (patch)
tree: c5a5a544b09c53890fe199044b9fee7c9de73dc7 /gr-qtgui/examples/pyqt_histogram_f.py
parent: daac8bc5f7c41afa678935344ef25f4f92206b3e (diff)
1 files changed, 200 insertions, 0 deletions
diff --git a/gr-qtgui/examples/pyqt_histogram_f.py b/gr-qtgui/examples/pyqt_histogram_f.py
new file mode 100755
index 0000000000..7bdcbfcb99
--- /dev/null
+++ b/gr-qtgui/examples/pyqt_histogram_f.py
@@ -0,0 +1,200 @@
+#!/usr/bin/env python
+#
+# Copyright 2013 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+from gnuradio import gr
+from gnuradio import blocks
+import sys
+
+try:
+    from gnuradio import qtgui
+    from PyQt4 import QtGui, QtCore
+    import sip
+except ImportError:
+    sys.stderr.write("Error: Program requires PyQt4 and gr-qtgui.\n")
+    sys.exit(1)
+
+try:
+    from gnuradio import analog
+except ImportError:
+    sys.stderr.write("Error: Program requires gr-analog.\n")
+    sys.exit(1)
+
+class dialog_box(QtGui.QWidget):
+    def __init__(self, display, control):
+        QtGui.QWidget.__init__(self, None)
+        self.setWindowTitle('PyQt Test GUI')
+
+        self.boxlayout = QtGui.QBoxLayout(QtGui.QBoxLayout.LeftToRight, self)
+        self.boxlayout.addWidget(display, 1)
+        self.boxlayout.addWidget(control)
+
+        self.resize(800, 500)
+
+class control_box(QtGui.QWidget):
+    def __init__(self, snk, parent=None):
+        QtGui.QWidget.__init__(self, parent)
+        self.setWindowTitle('Control Panel')
+        self.snk = snk
+
+        self.setToolTip('Control the signals')
+        QtGui.QToolTip.setFont(QtGui.QFont('OldEnglish', 10))
+
+        self.layout = QtGui.QFormLayout(self)
+
+        # Control the first signal
+        self.freq1Edit = QtGui.QLineEdit(self)
+        self.freq1Edit.setMinimumWidth(100)
+        self.layout.addRow("Sine Frequency:", self.freq1Edit)
+        self.connect(self.freq1Edit, QtCore.SIGNAL("editingFinished()"),
+                     self.freq1EditText)
+
+        self.amp1Edit = QtGui.QLineEdit(self)
+        self.amp1Edit.setMinimumWidth(100)
+        self.layout.addRow("Sine Amplitude:", self.amp1Edit)
+        self.connect(self.amp1Edit, QtCore.SIGNAL("editingFinished()"),
+                     self.amp1EditText)
+
+
+        # Control the second signal
+        self.amp2Edit = QtGui.QLineEdit(self)
+        self.amp2Edit.setMinimumWidth(100)
+        self.layout.addRow("Noise Amplitude:", self.amp2Edit)
+        self.connect(self.amp2Edit, QtCore.SIGNAL("editingFinished()"),
+                     self.amp2EditText)
+
+        # Control the histogram
+        self.hist_npts = QtGui.QLineEdit(self)
+        self.hist_npts.setMinimumWidth(100)
+        self.hist_npts.setValidator(QtGui.QIntValidator(0, 8191))
+        self.hist_npts.setText("{0}".format(self.snk.nsamps()))
+        self.layout.addRow("Number of Points:", self.hist_npts)
+        self.connect(self.hist_npts, QtCore.SIGNAL("editingFinished()"),
+                     self.set_nsamps)
+
+        self.hist_bins = QtGui.QLineEdit(self)
+        self.hist_bins.setMinimumWidth(100)
+        self.hist_bins.setValidator(QtGui.QIntValidator(0, 1000))
+        self.hist_bins.setText("{0}".format(self.snk.bins()))
+        self.layout.addRow("Number of Bins:", self.hist_bins)
+        self.connect(self.hist_bins, QtCore.SIGNAL("editingFinished()"),
+                     self.set_bins)
+
+        self.hist_auto = QtGui.QPushButton("scale", self)
+        self.layout.addRow("Autoscale X:", self.hist_auto)
+        self.connect(self.hist_auto, QtCore.SIGNAL("pressed()"),
+                     self.autoscalex)
+
+        self.quit = QtGui.QPushButton('Close', self)
+        self.quit.setMinimumWidth(100)
+        self.layout.addWidget(self.quit)
+
+        self.connect(self.quit, QtCore.SIGNAL('clicked()'),
+                     QtGui.qApp, QtCore.SLOT('quit()'))
+
+
+    def attach_signal1(self, signal):
+        self.signal1 = signal
+        self.freq1Edit.setText(QtCore.QString("%1").arg(self.signal1.frequency()))
+        self.amp1Edit.setText(QtCore.QString("%1").arg(self.signal1.amplitude()))
+
+    def attach_signal2(self, signal):
+        self.signal2 = signal
+        self.amp2Edit.setText(QtCore.QString("%1").arg(self.signal2.amplitude()))
+
+    def freq1EditText(self):
+        try:
+            newfreq = float(self.freq1Edit.text())
+            self.signal1.set_frequency(newfreq)
+        except ValueError:
+            print "Bad frequency value entered"
+
+    def amp1EditText(self):
+        try:
+            newamp = float(self.amp1Edit.text())
+            self.signal1.set_amplitude(newamp)
+        except ValueError:
+            print "Bad amplitude value entered"
+
+    def amp2EditText(self):
+        try:
+            newamp = float(self.amp2Edit.text())
+            self.signal2.set_amplitude(newamp)
+        except ValueError:
+            print "Bad amplitude value entered"
+
+    def set_nsamps(self):
+        res = self.hist_npts.text().toInt()
+        if(res[1]):
+            self.snk.set_nsamps(res[0])
+
+    def set_bins(self):
+        res = self.hist_bins.text().toInt()
+        if(res[1]):
+            self.snk.set_bins(res[0])
+        
+    def autoscalex(self):
+        self.snk.autoscalex()
+
+
+class my_top_block(gr.top_block):
+    def __init__(self):
+        gr.top_block.__init__(self)
+
+        Rs = 8000
+        f1 = 100
+
+        npts = 2048
+
+        self.qapp = QtGui.QApplication(sys.argv)
+
+        src1 = analog.sig_source_f(Rs, analog.GR_SIN_WAVE, f1, 0, 0)
+        src2 = analog.noise_source_f(analog.GR_GAUSSIAN, 1)
+        src  = blocks.add_ff()
+        thr = blocks.throttle(gr.sizeof_float, 100*npts)
+        self.snk1 = qtgui.histogram_sink_f(npts, 200, -5, 5,
+                                           "Histogram")
+
+        self.connect(src1, (src,0))
+        self.connect(src2, (src,1))
+        self.connect(src, thr, self.snk1)
+
+        self.ctrl_win = control_box(self.snk1)
+        self.ctrl_win.attach_signal1(src1)
+        self.ctrl_win.attach_signal2(src2)
+
+        # Get the reference pointer to the SpectrumDisplayForm QWidget
+        pyQt  = self.snk1.pyqwidget()
+
+        # Wrap the pointer as a PyQt SIP object
+        # This can now be manipulated as a PyQt4.QtGui.QWidget
+        pyWin = sip.wrapinstance(pyQt, QtGui.QWidget)
+
+        #pyWin.show()
+        self.main_box = dialog_box(pyWin, self.ctrl_win)
+        self.main_box.show()
+
+if __name__ == "__main__":
+    tb = my_top_block();
+    tb.start()
+    tb.qapp.exec_()
+    tb.stop()
+
author	Tom Rondeau <tom@trondeau.com>	2013-10-22 14:03:39 -0400
committer	Tom Rondeau <tom@trondeau.com>	2013-10-29 12:23:09 -0400
commit	ccb5384d759d8736e596574be770ad36222ef4a1 (patch)
tree	c5a5a544b09c53890fe199044b9fee7c9de73dc7 /gr-qtgui/examples/pyqt_histogram_f.py
parent	daac8bc5f7c41afa678935344ef25f4f92206b3e (diff)