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pyqt_histogram_f.py
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#!/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()