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()
def __init__(self, *args):
QMainWindow.__init__(self, *args)
self.d_plot = Plot(self)
margin = 5
self.d_plot.setContentsMargins(margin, margin, margin, 0)
self.setContextMenuPolicy(Qt.NoContextMenu)
self.d_zoomer = [None, None]
self.d_zoomer[0] = Zoomer(Qwt.QwtPlot.xBottom, Qwt.QwtPlot.yLeft,
self.d_plot.canvas())
self.d_zoomer[0].setRubberBand(Qwt.QwtPicker.RectRubberBand)
self.d_zoomer[0].setRubberBandPen(QColor(Qt.green))
self.d_zoomer[0].setTrackerMode(Qwt.QwtPicker.ActiveOnly)
self.d_zoomer[0].setTrackerPen(QColor(Qt.white))
self.d_zoomer[1] = Zoomer(Qwt.QwtPlot.xTop, Qwt.QwtPlot.yRight,
self.d_plot.canvas())
self.d_panner = Qwt.QwtPlotPanner(self.d_plot.canvas())
self.d_panner.setMouseButton(Qt.MidButton)
self.d_picker = Qwt.QwtPlotPicker(Qwt.QwtPlot.xBottom,
Qwt.QwtPlot.yLeft,
Qwt.QwtPlotPicker.CrossRubberBand,
Qwt.QwtPicker.AlwaysOn,
self.d_plot.canvas())
self.d_picker.setStateMachine(Qwt.QwtPickerDragPointMachine())
self.d_picker.setRubberBandPen(QColor(Qt.green))
self.d_picker.setRubberBand(Qwt.QwtPicker.CrossRubberBand)
self.d_picker.setTrackerPen(QColor(Qt.white))
self.setCentralWidget(self.d_plot)
self.toolBar = QToolBar(self)
self.btnZoom = QToolButton(self.toolBar)
self.btnZoom.setText("Zoom")
self.btnZoom.setIcon(QIcon(QPixmap(zoom_xpm)))
self.btnZoom.setCheckable(True)
self.btnZoom.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
self.toolBar.addWidget(self.btnZoom)
self.btnZoom.toggled.connect(self.enableZoomMode)
self.btnPrint = QToolButton(self.toolBar)
self.btnPrint.setText("Print")
self.btnPrint.setIcon(QIcon(QPixmap(print_xpm)))
self.btnPrint.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
self.toolBar.addWidget(self.btnPrint)
self.btnPrint.clicked.connect(self.mprint)
self.btnExport = QToolButton(self.toolBar)
self.btnExport.setText("Export")
self.btnExport.setIcon(QIcon(QPixmap(print_xpm)))
self.btnExport.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
self.toolBar.addWidget(self.btnExport)
self.btnExport.clicked.connect(self.exportDocument)
self.toolBar.addSeparator()
hBox = QWidget(self.toolBar)
self.layout = QHBoxLayout(hBox)
self.layout.setSpacing(0)
self.layout.addWidget(QWidget(hBox), 10) # spacer
self.layout.addWidget(QLabel("Damping Factor", hBox), 0)
self.layout.addSpacing(10)
self.cntDamp = Qwt.QwtCounter(hBox)
self.cntDamp.setRange(0.0, 5.0)
self.cntDamp.setSingleStep(0.01)
self.cntDamp.setValue(0.0)
self.layout.addWidget(self.cntDamp, 0)
self.toolBar.addWidget(hBox)
self.addToolBar(self.toolBar)
self.statusBar()
self.enableZoomMode(False)
self.showInfo()
self.cntDamp.valueChanged['double'].connect(self.d_plot.setDamp)
self.d_picker.moved.connect(self.moved)