def __init__(self, title, min, max, parent):
super().__init__(parent)
QWidget = parent
font = QFont("Helvetica", 10)
self.__d_knob = Qwt.QwtKnob(self)
self.__d_knob.setFont(font)
scaleDiv = self.__d_knob.scaleEngine().divideScale(min, max, 5, 3)
ticks = scaleDiv.ticks(Qwt.QwtScaleDiv.MajorTick)
if (len(ticks) > 0 and ticks[0] > min):
if (ticks[0] > min):
ticks.insert(0, min)
if (ticks[-1] < max):
ticks.append(max)
scaleDiv.setTicks(Qwt.QwtScaleDiv.MajorTick, ticks)
self.__d_knob.setScale(scaleDiv)
self.__d_knob.setKnobWidth(50)
font.setBold(True)
self.__d_label = QLabel(title, self)
self.__d_label.setFont(font)
self.__d_label.setAlignment(Qt.AlignTop | Qt.AlignHCenter)
self.setSizePolicy(QSizePolicy.MinimumExpanding,
QSizePolicy.MinimumExpanding)
self.__d_knob.valueChanged.connect(self.valueChanged)
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, 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)