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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2015 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 PyQt4 import Qt, QtCore, QtGui
class Range(object):
def __init__(self, minv, maxv, step, default):
self.min = float(minv)
self.max = float(maxv)
self.step = float(step)
self.default = float(default)
self.find_precision()
def find_precision(self):
temp = str(float(self.step)-int(self.step))[2:]
if len(temp) > 15:
self.precision = 15
else:
self.precision = len(temp)
class RangeWidget(QtGui.QWidget):
def __init__(self, ranges, slot, label, style):
""" Creates the QT Range widget """
QtGui.QWidget.__init__(self)
self.range = ranges
layout = Qt.QHBoxLayout()
label = Qt.QLabel(label)
layout.addWidget(label)
if style == "dial":
layout.addWidget(self.Dial(self, self.range, slot))
elif style == "slider":
layout.addWidget(self.Slider(self, self.range, slot))
elif style == "counter":
layout.addWidget(self.Counter(self, self.range, slot))
elif style == "counter_slider":
layout.addWidget(self.CounterSlider(self, self.range, slot))
else:
layout.addWidget(self.CounterSlider(self, self.range, slot))
self.setLayout(layout)
class Dial(QtGui.QDial):
""" Creates the range using a dial """
def __init__(self, parent, ranges, slot):
QtGui.QDial.__init__(self, parent)
self.setRange(ranges.min, ranges.max)
self.setSingleStep(ranges.step)
self.setNotchesVisible(True)
self.setNotchTarget(ranges.step)
self.setValue(ranges.default)
self.valueChanged.connect(slot)
class Slider(QtGui.QSlider):
""" Creates the range using a slider """
def __init__(self, parent, ranges, slot):
QtGui.QSlider.__init__(self, QtCore.Qt.Horizontal, parent)
self.setFocusPolicy(QtCore.Qt.NoFocus)
self.setRange(ranges.min, ranges.max)
self.setValue(ranges.default)
self.setPageStep(ranges.step)
self.setSingleStep(ranges.step)
self.setTickInterval(ranges.step)
self.setTracking(False)
self.setInvertedControls(True)
self.valueChanged.connect(slot)
class Counter(QtGui.QDoubleSpinBox):
""" Creates the range using a counter """
def __init__(self, parent, ranges, slot):
QtGui.QDoubleSpinBox.__init__(self, parent)
self.setRange(ranges.min, ranges.max)
self.setValue(ranges.default)
self.setSingleStep(ranges.step)
self.setDecimals(ranges.precision)
self.valueChanged.connect(slot)
class CounterSlider(QtGui.QWidget):
""" Creates the range using a counter and slider """
def __init__(self, parent, ranges, slot):
QtGui.QWidget.__init__(self, parent)
# Need another horizontal layout
layout = Qt.QHBoxLayout()
# Create a slider with the top-level widget as the parent
slider = RangeWidget.Slider(parent,ranges,slot)
layout.addWidget(slider)
# Setup the counter
counter = RangeWidget.Counter(parent,ranges,slot)
layout.addWidget(counter)
# Wire the events to each other
counter.valueChanged.connect(slider.setValue)
slider.valueChanged.connect(counter.setValue)
counter.valueChanged.connect(slot)
slider.valueChanged.connect(slot)
self.setLayout(layout)
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