def createKnob(self, knobType):
knob = Qwt.QwtKnob()
knob.setTracking(True)
if knobType == 0:
knob.setKnobStyle(Qwt.QwtKnob.Sunken)
knob.setMarkerStyle(Qwt.QwtKnob.Nub)
knob.setWrapping(True)
knob.setNumTurns(4)
knob.setScaleStepSize(10.0)
knob.setScale(0, 400)
knob.setTotalSteps(400)
elif knobType == 1:
knob.setKnobStyle(Qwt.QwtKnob.Sunken)
knob.setMarkerStyle(Qwt.QwtKnob.Dot)
elif knobType == 2:
knob.setKnobStyle(Qwt.QwtKnob.Sunken)
knob.setMarkerStyle(Qwt.QwtKnob.Tick)
#QwtLinearScaleEngine *scaleEngine = new QwtLinearScaleEngine( 2 )
#scaleEngine.setTransformation( new QwtPowerTransform( 2 ) )
#knob.setScaleEngine( scaleEngine )
"""QList< double > ticks[ QwtScaleDiv.NTickTypes ]
ticks[ QwtScaleDiv.MajorTick ] << 0 << 4
<< 16 << 32 << 64 << 96 << 128
ticks[ QwtScaleDiv.MediumTick ] << 24 << 48 << 80 << 112
ticks[ QwtScaleDiv.MinorTick ]
<< 0.5 << 1 << 2
<< 7 << 10 << 13
<< 20 << 28
<< 40 << 56
<< 72 << 88
<< 104 << 120
knob.setScale( QwtScaleDiv( 0, 128, ticks ) )"""
knob.setTotalSteps(100)
knob.setStepAlignment(False)
knob.setSingleSteps(1)
knob.setPageSteps(5)
elif knobType == 3:
knob.setKnobStyle(Qwt.QwtKnob.Flat)
knob.setMarkerStyle(Qwt.QwtKnob.Notch)
knob.setScaleEngine(Qwt.QwtLogScaleEngine())
knob.setScaleStepSize(1.0)
knob.setScale(0.1, 1000.0)
knob.setScaleMaxMinor(10)
elif knobType == 4:
knob.setKnobStyle(Qwt.QwtKnob.Raised)
knob.setMarkerStyle(Qwt.QwtKnob.Dot)
knob.setWrapping(True)
elif knobType == 5:
knob.setKnobStyle(Qwt.QwtKnob.Styled)
knob.setMarkerStyle(Qwt.QwtKnob.Triangle)
knob.setTotalAngle(180.0)
knob.setScale(100, -100)
return knob
def __init__(self, parent=None):
Qwt.QwtPlot.__init__(self, parent)
self.setAutoReplot(False)
self.setTitle("Frequency Response of a Second-Order System")
canvas = Qwt.QwtPlotCanvas()
canvas.setBorderRadius(10)
self.setCanvas(canvas)
self.setCanvasBackground(QColor("MidnightBlue"))
# legend
legend = Qwt.QwtLegend()
self.insertLegend(legend, Qwt.QwtPlot.BottomLegend)
# grid
grid = Qwt.QwtPlotGrid()
grid.enableXMin(True)
grid.setMajorPen(Qt.white, 0, Qt.DotLine)
grid.setMinorPen(Qt.gray, 0, Qt.DotLine)
grid.attach(self)
# axes
self.enableAxis(Qwt.QwtPlot.yRight)
self.setAxisTitle(Qwt.QwtPlot.xBottom, "Normalized Frequency")
self.setAxisTitle(Qwt.QwtPlot.yLeft, "Amplitude [dB]")
self.setAxisTitle(Qwt.QwtPlot.yRight, "Phase [deg]")
self.setAxisMaxMajor(Qwt.QwtPlot.xBottom, 6)
self.setAxisMaxMinor(Qwt.QwtPlot.xBottom, 9)
self.setAxisScaleEngine(Qwt.QwtPlot.xBottom, Qwt.QwtLogScaleEngine())
# curves
self.d_curve1 = Qwt.QwtPlotCurve("Amplitude")
self.d_curve1.setRenderHint(Qwt.QwtPlotItem.RenderAntialiased)
self.d_curve1.setPen(Qt.yellow)
self.d_curve1.setLegendAttribute(Qwt.QwtPlotCurve.LegendShowLine)
self.d_curve1.setYAxis(Qwt.QwtPlot.yLeft)
self.d_curve1.attach(self)
self.d_curve2 = Qwt.QwtPlotCurve("Phase")
self.d_curve2.setRenderHint(Qwt.QwtPlotItem.RenderAntialiased)
self.d_curve2.setPen(Qt.cyan)
self.d_curve2.setLegendAttribute(Qwt.QwtPlotCurve.LegendShowLine)
self.d_curve2.setYAxis(Qwt.QwtPlot.yRight)
self.d_curve2.attach(self)
# marker
self.d_marker1 = Qwt.QwtPlotMarker()
self.d_marker1.setValue(0.0, 0.0)
self.d_marker1.setLineStyle(Qwt.QwtPlotMarker.VLine)
self.d_marker1.setLabelAlignment(Qt.AlignRight | Qt.AlignBottom)
self.d_marker1.setLinePen(Qt.green, 0, Qt.DashDotLine)
self.d_marker1.attach(self)
self.d_marker2 = Qwt.QwtPlotMarker()
self.d_marker2.setLineStyle(Qwt.QwtPlotMarker.HLine)
self.d_marker2.setLabelAlignment(Qt.AlignRight | Qt.AlignBottom)
self.d_marker2.setLinePen(QColor(200, 150, 0), 0, Qt.DashDotLine)
self.d_marker2.setSymbol(
Qwt.QwtSymbol(Qwt.QwtSymbol.Diamond, QColor(Qt.yellow),
QColor(Qt.green), QSize(8, 8)))
self.d_marker2.attach(self)
self.setDamp(0)
self.setAutoReplot(True)
def createSlider(self, sliderType):
slider = Qwt.QwtSlider()
if sliderType == 0:
slider.setOrientation(Qt.Horizontal)
slider.setScalePosition(Qwt.QwtSlider.TrailingScale)
slider.setTrough(True)
slider.setGroove(False)
slider.setSpacing(0)
slider.setHandleSize(QSize(30, 16))
slider.setScale(10.0, -10.0)
slider.setTotalSteps(8)
slider.setSingleSteps(1)
slider.setPageSteps(1)
slider.setWrapping(True)
elif sliderType == 1:
slider.setOrientation(Qt.Horizontal)
slider.setScalePosition(Qwt.QwtSlider.NoScale)
slider.setTrough(True)
slider.setGroove(True)
slider.setScale(0.0, 1.0)
slider.setTotalSteps(100)
slider.setSingleSteps(1)
slider.setPageSteps(5)
elif sliderType == 2:
slider.setOrientation(Qt.Horizontal)
slider.setScalePosition(Qwt.QwtSlider.LeadingScale)
slider.setTrough(False)
slider.setGroove(True)
slider.setHandleSize(QSize(12, 25))
slider.setScale(1000.0, 3000.0)
slider.setTotalSteps(200.0)
slider.setSingleSteps(2)
slider.setPageSteps(10)
elif sliderType == 3:
slider.setOrientation(Qt.Horizontal)
slider.setScalePosition(Qwt.QwtSlider.TrailingScale)
slider.setTrough(True)
slider.setGroove(True)
scaleEngine = Qwt.QwtLinearScaleEngine(2)
scaleEngine.setTransformation(Qwt.QwtPowerTransform(2))
slider.setScaleEngine(scaleEngine)
slider.setScale(0.0, 128.0)
slider.setTotalSteps(100)
slider.setStepAlignment(False)
slider.setSingleSteps(1)
slider.setPageSteps(5)
elif sliderType == 4:
slider.setOrientation(Qt.Vertical)
slider.setScalePosition(Qwt.QwtSlider.TrailingScale)
slider.setTrough(False)
slider.setGroove(True)
slider.setScale(100.0, 0.0)
slider.setInvertedControls(True)
slider.setTotalSteps(100)
slider.setPageSteps(5)
slider.setScaleMaxMinor(5)
elif sliderType == 5:
slider.setOrientation(Qt.Vertical)
slider.setScalePosition(Qwt.QwtSlider.NoScale)
slider.setTrough(True)
slider.setGroove(False)
slider.setScale(0.0, 100.0)
slider.setTotalSteps(100)
slider.setPageSteps(10)
elif sliderType == 6:
slider.setOrientation(Qt.Vertical)
slider.setScalePosition(Qwt.QwtSlider.LeadingScale)
slider.setTrough(True)
slider.setGroove(True)
slider.setScaleEngine(Qwt.QwtLogScaleEngine())
slider.setStepAlignment(False)
slider.setHandleSize(QSize(20, 32))
slider.setBorderWidth(1)
slider.setScale(1.0, 1.0e4)
slider.setTotalSteps(100)
slider.setPageSteps(10)
slider.setScaleMaxMinor(9)
if (slider):
slider.setObjectName("Slider %d" % sliderType)
return slider