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#!/usr/bin/python3
# python radio.py <qtversion (4 or 5)>
# Tested for python3 Qt5. Crashes if mouse is over plot canvas
import sys
import math
#import Qwt
from PyQt5 import Qwt
import numpy as np
from PyQt5.QtCore import pyqtSignal, Qt, QSize, QBasicTimer
from PyQt5.QtGui import QColor, QPixmap, QFont, QIcon, QPalette, QLinearGradient
from PyQt5.QtWidgets import (QMainWindow, QWidget, QToolBar, QToolButton, QHBoxLayout, QLabel, QApplication, QSizePolicy,
QVBoxLayout, QFrame )
#from PyQt5.QtPrintSupport import QPrintDialog, QPrinter
M_PI = 3.14159
class Knob(QWidget):
def __init__(self, title, min, max, parent ):
QWidget.__init__(self, parent)
self.d_knob = Qwt.QwtKnob( self )
self.d_knob.setScale( min, max )
self.d_knob.setTotalSteps( 0 ) # disable
self.d_knob.setScaleMaxMajor( 10 )
self.d_knob.setKnobStyle( Qwt.QwtKnob.Raised )
self.d_knob.setKnobWidth( 50 )
self.d_knob.setBorderWidth( 2 )
self.d_knob.setMarkerStyle( Qwt.QwtKnob.Notch )
self.d_knob.setMarkerSize( 8 )
self.d_knob.scaleDraw().setTickLength( Qwt.QwtScaleDiv.MinorTick, 4 )
self.d_knob.scaleDraw().setTickLength( Qwt.QwtScaleDiv.MediumTick, 4 )
self.d_knob.scaleDraw().setTickLength( Qwt.QwtScaleDiv.MajorTick, 6 )
self.d_label = QLabel( title, self )
self.d_label.setAlignment( Qt.AlignTop | Qt.AlignHCenter )
self.setSizePolicy( QSizePolicy.MinimumExpanding, QSizePolicy.MinimumExpanding )
def sizeHint(self):
sz1 = self.d_knob.sizeHint()
sz2 = self.d_label.sizeHint()
w = max( sz1.width(), sz2.width() )
h = sz1.height() + sz2.height()
off = math.ceil( self.d_knob.scaleDraw().extent( self.d_knob.font() ) )
off -= 10 # spacing
return QSize( w, h - off )
def setValue( self, value ):
self.d_knob.setValue( value )
def value(self):
return self.d_knob.value()
def resizeEvent( self, e ):
sz = e.size()
h = self.d_label.sizeHint().height()
self.d_label.setGeometry( 0, sz.height() - h, sz.width(), h )
h = self.d_knob.sizeHint().height()
off = math.ceil( self.d_knob.scaleDraw().extent( self.d_knob.font() ) )
off -= 10 # spacing
self.d_knob.setGeometry( 0, self.d_label.pos().y() - h + off, sz.width(), h )
class Thermo(QWidget):
def __init__( self, title, parent ):
QWidget.__init__(self, parent)
self.d_thermo = Qwt.QwtThermo( self )
self.d_thermo.setPipeWidth( 6 )
self.d_thermo.setScale( -40, 10 )
self.d_thermo.setFillBrush( Qt.green )
self.d_thermo.setAlarmBrush( Qt.red )
self.d_thermo.setAlarmLevel( 0.0 )
self.d_thermo.setAlarmEnabled( True )
label = QLabel( title, self )
label.setAlignment( Qt.AlignTop | Qt.AlignLeft )
self.layout = QVBoxLayout( self )
#self.layout.setMargin( 0 )
self.layout.setSpacing( 0 )
self.layout.addWidget( self.d_thermo, 10 )
self.layout.addWidget( label )
def setValue( self, value ):
self.d_thermo.setValue( value )
class AmpFrame( QFrame ):
def __init__(self, p):
QFrame.__init__( self, p )
self.phs = 0
self.d_knbVolume = Knob( "Volume", 0.0, 10.0, self )
self.d_knbBalance = Knob( "Balance", -10.0, 10.0, self )
self.d_knbTreble = Knob( "Treble", -10.0, 10.0, self )
self.d_knbBass = Knob( "Bass", -10.0, 10.0, self )
self.d_thmLeft = Thermo( "Left [dB]", self )
self.d_thmRight = Thermo( "Right [dB]", self )
self.layout = QHBoxLayout( self )
self.layout.setSpacing( 0 )
#self.layout.setMargin( 10 )
self.layout.addWidget( self.d_knbVolume )
self.layout.addWidget( self.d_knbBalance)
self.layout.addWidget( self.d_knbTreble)
self.layout.addWidget( self.d_knbBass )
self.layout.addSpacing( 20 )
self.layout.addStretch( 10 )
self.layout.addWidget( self.d_thmLeft )
self.layout.addSpacing( 10 )
self.layout.addWidget( self.d_thmRight )
self.d_knbVolume.setValue( 7.0 )
self.startTimer( 50 )
self.d_master = 0
def timerEvent( self, event ):
#self.phs = 0.0
# This amplifier generates its own input signal...
sig_bass = ( 1.0 + 0.1 * self.d_knbBass.value() ) * math.sin( 13.0 * self.phs )
sig_mid_l = math.sin( 17.0 * self.phs )
sig_mid_r = math.cos( 17.5 * self.phs )
sig_trbl_l = 0.5 * ( 1.0 + 0.1 * self.d_knbTreble.value() ) * math.sin( 35.0 * self.phs )
sig_trbl_r = 0.5 * ( 1.0 + 0.1 * self.d_knbTreble.value() ) * math.sin( 34.0 * self.phs )
sig_l = 0.05 * self.d_master * self.d_knbVolume.value() * ( sig_bass + sig_mid_l + sig_trbl_l )*( sig_bass + sig_mid_l + sig_trbl_l )
sig_r = 0.05 * self.d_master * self.d_knbVolume.value() * ( sig_bass + sig_mid_r + sig_trbl_r )*( sig_bass + sig_mid_r + sig_trbl_r )
balance = 0.1 * self.d_knbBalance.value()
if ( balance > 0 ):
sig_l *= ( 1.0 - balance )
else:
sig_r *= ( 1.0 + balance )
if ( sig_l > 0.01 ):
sig_l = 20.0 * math.log10( sig_l )
else:
sig_l = -40.0
if ( sig_r > 0.01 ):
sig_r = 20.0 * math.log10( sig_r )
else:
sig_r = - 40.0
self.d_thmLeft.setValue( sig_l )
self.d_thmRight.setValue( sig_r )
self.phs += M_PI / 100
if ( self.phs > M_PI ):
self.phs = 0
def setMaster( self, v ):
self.d_master = v
class TuningThermo(QWidget):
def __init__(self, parent):
QWidget.__init__( self, parent )
self.d_thermo = Qwt.QwtThermo( self )
self.d_thermo.setOrientation( Qt.Horizontal )
self.d_thermo.setScalePosition( Qwt.QwtThermo.NoScale )
self.d_thermo.setScale( 0.0, 1.0 )
self.d_thermo.setFillBrush( Qt.green )
self.label = QLabel( "Tuning", self )
self.label.setAlignment( Qt.AlignCenter )
self.layout = QVBoxLayout( self )
#self.layout.setMargin( 0 ) FIXME
self.layout.addWidget( self.d_thermo )
self.layout.addWidget( self.label )
self.setFixedWidth( 3 * self.label.sizeHint().width() )
def setValue( self, value ):
self.d_thermo.setValue( value )
class TunerFrame( QWidget ):
fieldChanged = pyqtSignal(float)
def __init__(self, parent):
QWidget.__init__(self, parent )
self.freqMin = 87.5
self.freqMax = 108
self.d_sliderFrequency = Qwt.QwtSlider( self )
self.d_sliderFrequency.setOrientation( Qt.Horizontal )
self.d_sliderFrequency.setScalePosition( Qwt.QwtSlider.TrailingScale )
self.d_sliderFrequency.setScale( self.freqMin, self.freqMax )
#self.d_sliderFrequency.setTotalSteps( math.round( ( self.freqMax - self.freqMin ) / 0.01 ) ) FIXME
self.d_sliderFrequency.setTotalSteps( int(math.ceil( ( self.freqMax - self.freqMin ) / 0.01 ) ) )
self.d_sliderFrequency.setSingleSteps( 1 )
self.d_sliderFrequency.setPageSteps( 10 )
self.d_sliderFrequency.setScaleMaxMinor( 5 )
self.d_sliderFrequency.setScaleMaxMajor( 12 )
self.d_sliderFrequency.setHandleSize( QSize( 80, 20 ) )
self.d_sliderFrequency.setBorderWidth( 1 )
self.d_thermoTune = TuningThermo( self )
self.d_wheelFrequency = Qwt.QwtWheel( self )
self.d_wheelFrequency.setMass( 0.5 )
self.d_wheelFrequency.setRange( 87.5, 108 )
self.d_wheelFrequency.setSingleStep( 0.01 )
self.d_wheelFrequency.setPageStepCount( 10 )
self.d_wheelFrequency.setTotalAngle( 3600.0 )
self.d_wheelFrequency.setFixedHeight( 30 )
self.d_wheelFrequency.valueChanged['double'].connect(self.adjustFreq )
self.d_sliderFrequency.valueChanged['double'].connect(self.adjustFreq )
self.mainLayout = QVBoxLayout( self )
#self.mainLayout.setMargin( 10 )
self.mainLayout.setSpacing( 5 )
self.mainLayout.addWidget( self.d_sliderFrequency )
self.hLayout = QHBoxLayout()
#self.hLayout.setMargin( 0 )
#self.hLayout.addWidget( self.d_thermoTune, 0 )
self.hLayout.addStretch( 5 )
self.hLayout.addWidget( self.d_wheelFrequency, 2 )
self.mainLayout.addLayout( self.hLayout )
def adjustFreq( self, frq ):
factor = 13.0 / ( 108 - 87.5 )
x = ( frq - 87.5 ) * factor
field = ( math.sin( x ) * math.cos( 4.0 * x ) )*( math.sin( x ) * math.cos( 4.0 * x ) )
self.d_thermoTune.setValue( field )
if ( self.d_sliderFrequency.value() != frq ):
self.d_sliderFrequency.setValue( frq )
if ( self.d_wheelFrequency.value() != frq ):
self.d_wheelFrequency.setValue( frq )
self.fieldChanged.emit( field )
def setFreq( self, frq ):
self.d_wheelFrequency.setValue( frq )
class MainWindow(QWidget):
def __init__(self):
QWidget.__init__(self)
self.frmTuner = TunerFrame( self )
#self.frmTuner.setFrameStyle( QFrame.Panel | QFrame.Raised )
self.frmAmp = AmpFrame( self )
self.frmAmp.setFrameStyle( QFrame.Panel | QFrame.Raised )
self.layout = QVBoxLayout( self )
#self.layout.setMargin( 0 )
self.layout.setSpacing( 0 )
self.layout.addWidget( self.frmTuner )
self.layout.addWidget( self.frmAmp )
self.frmTuner.fieldChanged['double'].connect(self.frmAmp.setMaster)
self.frmTuner.setFreq( 90.0 )
self.setPalette( QPalette( QColor( 192, 192, 192 ) ) )
self.updateGradient()
def resizeEvent(self, QResizeEvent ):
# Qt 4.7.1: QGradient.StretchToDeviceMode is buggy on X11
self.updateGradient()
def updateGradient(self):
self.pal = QPalette()
self.buttonColor = self.pal.color( QPalette.Button )
self.midLightColor = self.pal.color( QPalette.Midlight )
#self.gradient = QLinearGradient( rect().topLeft(), rect().topRight() ) FIXME
self.gradient = QLinearGradient( )
self.gradient.setColorAt( 0.0, self.midLightColor )
self.gradient.setColorAt( 0.7, self.buttonColor )
self.gradient.setColorAt( 1.0, self.buttonColor )
self.pal.setBrush( QPalette.Window, self.gradient )
self.setPalette( self.pal )
a = QApplication(sys.argv)
m = MainWindow()
m.show()
sys.exit(a.exec_())
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