def __init__(self, parent=None):
Qwt.QwtPlot.__init__(self, parent)
self.canvas().setStyleSheet(
"border: 2px solid Black;"
"border-radius: 15px;"
"background-color: qlineargradient( x1: 0, y1: 0, x2: 0, y2: 1,"
"stop: 0 LemonChiffon, stop: 1 PaleGoldenrod );")
# attach curve
self.d_curve = Qwt.QwtPlotCurve("Scattered Points")
self.d_curve.setPen(QColor("Purple"))
# when using QwtPlotCurve.ImageBuffer simple dots can be
# rendered in parallel on multicore systems.
self.d_curve.setRenderThreadCount(
0) # 0: use QThread.idealThreadCount()
self.d_curve.attach(self)
self.setSymbol(None)
# panning with the left mouse button
Qwt.QwtPlotPanner(self.canvas())
# distanve measurement with the right mouse button
self.picker = DistancePicker(self.canvas())
self.picker.setMousePattern(Qwt.QwtPlotPicker.MouseSelect1,
Qt.RightButton)
self.picker.setRubberBandPen(QPen(Qt.blue))
# zoom in/out with the wheel
self.magnifier = Qwt.QwtPlotMagnifier(self.canvas())
self.magnifier.setMouseButton(Qt.NoButton)
def __init__(self):
super().__init__()
self.setAutoFillBackground(True)
self.setPalette(QPalette(QColor(165, 193, 228)))
self.updateGradient()
self.setTitle("A Simple QwtPlot Demonstration")
self.insertLegend(Qwt.QwtLegend(), Qwt.QwtPlot.RightLegend)
#axes
self.setAxisTitle(Qwt.QwtPlot.xBottom, "x -->")
self.setAxisScale(Qwt.QwtPlot.xBottom, 0.0, 10.0)
self.setAxisTitle(Qwt.QwtPlot.yLeft, "y -->")
self.setAxisScale(Qwt.QwtPlot.yLeft, -1.0, 1.0)
# canvas
self.canvas = Qwt.QwtPlotCanvas()
self.canvas.setLineWidth(1)
self.canvas.setFrameStyle(QFrame.Box | QFrame.Plain)
self.canvas.setBorderRadius(15)
self.canvasPalette = QPalette(Qt.white)
self.canvasPalette.setColor(QPalette.Foreground, QColor(133, 190, 232))
self.canvas.setPalette(self.canvasPalette)
self.setCanvas(self.canvas)
#panning with the left mouse button
self.panner = Qwt.QwtPlotPanner(self.canvas)
#zoom in/out with the wheel
self.magnifier = Qwt.QwtPlotMagnifier(self.canvas)
self.magnifier.setMouseButton(Qt.NoButton)
self.populate()