我们从Python开源项目中，提取了以下10个代码示例，用于说明如何使用pyqtgraph.SignalProxy()。
def __init__(self,parent): """Constructor""" self.__view = parent super(Crosshair, self).__init__() self.__vLine = pg.InfiniteLine(angle=90, movable=False) self.__hLine = pg.InfiniteLine(angle=0, movable=False) self.__textPrice = pg.TextItem('price') self.__textDate = pg.TextItem('date') #mid ?y?????????????????? self.__textLastPrice = pg.TextItem('lastTickPrice') view = self.__view view.addItem(self.__textDate, ignoreBounds=True) view.addItem(self.__textPrice, ignoreBounds=True) view.addItem(self.__vLine, ignoreBounds=True) view.addItem(self.__hLine, ignoreBounds=True) view.addItem(self.__textLastPrice, ignoreBounds=True) self.proxy = pg.SignalProxy(view.scene().sigMouseMoved, rateLimit=60, slot=self.__mouseMoved) #----------------------------------------------------------------------
def enableCrossHairs(self,plot,curves=[]): """ Enables crosshairs on the specified plot .. tabularcolumns:: |p{3cm}|p{11cm}| =============== ============================================================================================ **Arguments** =============== ============================================================================================ plot The plot to activate this feature on =============== ============================================================================================ """ plot.setTitle('') vLine = pg.InfiniteLine(angle=90, movable=False,pen=[100,100,200,200]) plot.addItem(vLine, ignoreBounds=True) hLine = pg.InfiniteLine(angle=0, movable=False,pen=[100,100,200,200]) plot.addItem(hLine, ignoreBounds=True) plot.hLine = hLine; plot.vLine = vLine crossHairPartial = functools.partial(self.crossHairEvent,plot) proxy = pg.SignalProxy(plot.scene().sigMouseClicked, rateLimit=60, slot=crossHairPartial) plot.proxy = proxy plot.mousePoint=None
def plot_liss(self): lissx = self.Liss_x.currentText() lissy = self.Liss_y.currentText() self.liss_x = self.Liss_x.currentIndex() self.liss_y = self.Liss_y.currentIndex() if not (self.channel_states[self.liss_x] and self.channel_states[self.liss_y]): QtGui.QMessageBox.about(self, 'Error : Insufficient Data', 'Please enable the selected channels in the oscilloscope') return self.liss_win = pg.GraphicsWindow(title="Basic plotting examples") self.liss_win.setWindowTitle('pyqtgraph example: Plotting') self.p1 = self.liss_win.addPlot(title="Lissajous: x : %s vs y : %s"%(lissx,lissy),x=self.I.achans[self.liss_x].get_yaxis(),y=self.I.achans[self.liss_y].get_yaxis()) self.p1.setLabel('left',lissy);self.p1.setLabel('bottom',lissx) self.p1.getAxis('left').setGrid(170) self.p1.getAxis('bottom').setGrid(170) self.lissvLine = pg.InfiniteLine(angle=90, movable=False,pen=[100,100,200,200]) self.p1.addItem(self.lissvLine, ignoreBounds=True) self.lisshLine = pg.InfiniteLine(angle=0, movable=False,pen=[100,100,200,200]) self.p1.addItem(self.lisshLine, ignoreBounds=True) self.vb = self.p1.vb self.lissproxy = pg.SignalProxy(self.p1.scene().sigMouseClicked, rateLimit=60, slot=self.lissMouseClicked)
def __init__(self): QtCore.QObject.__init__(self) self.scene = None self.frame = None self.quadtree = None self.covariance = None self.log = SceneLogModel(self) self._ = SignalProxy(self._sigQuadtreeChanged, rateLimit=5, delay=0, slot=lambda: self.sigQuadtreeChanged.emit()) self._log_handler = logging.Handler() self._log_handler.emit = self.sigLogRecord.emit self.qtproxy = QSceneQuadtreeProxy(self) self.worker_thread = QtCore.QThread() self.moveToThread(self.worker_thread) self.worker_thread.start()
def rightClickToZoomOut(self,plot): """ Enables zooming out when the user presses the right mouse button on the plot .. tabularcolumns:: |p{3cm}|p{11cm}| =============== ============================================================================================ **Arguments** =============== ============================================================================================ plot The plot to activate this feature on =============== ============================================================================================ """ clickEvent = functools.partial(self.autoRangePlot,plot) return pg.SignalProxy(plot.scene().sigMouseClicked, rateLimit=60, slot=clickEvent)
def _setup_connections(self): # Connect cursor position to UI element # proxy = pg.SignalProxy(self._plot_item.scene().sigMouseMoved, # rateLimit=30, slot=self.cursor_moved) self._plot_item.scene().sigMouseMoved.connect(self.cursor_moved) self.button_reset.clicked.connect(self._reset_view)
def on_activate(self): """ Definition and initialisation of the GUI plus staring the measurement. """ self._laser_logic = self.get_connector('laserlogic') ##################### # Configuring the dock widgets # Use the inherited class 'CounterMainWindow' to create the GUI window self._mw = LaserWindow() # Setup dock widgets self._mw.setDockNestingEnabled(True) self._mw.actionReset_View.triggered.connect(self.restoreDefaultView) # set up plot self._mw.plotWidget = pg.PlotWidget( axisItems={'bottom': TimeAxisItem(orientation='bottom')}) self._mw.pwContainer.layout().addWidget(self._mw.plotWidget) plot1 = self._mw.plotWidget.getPlotItem() plot1.setLabel('left', 'power', units='W', color=palette.c1.name()) plot1.setLabel('bottom', 'Time', units=None) plot1.setLabel('right', 'Temperature', units='°C', color=palette.c3.name()) plot2 = pg.ViewBox() plot1.scene().addItem(plot2) plot1.getAxis('right').linkToView(plot2) plot2.setXLink(plot1) self.curves = {} colorlist = (palette.c2, palette.c3, palette.c4, palette.c5, palette.c6) i = 0 for name in self._laser_logic.data: if name != 'time': curve = pg.PlotDataItem() if name == 'power': curve.setPen(palette.c1) plot1.addItem(curve) else: curve.setPen(colorlist[(2*i) % len(colorlist)]) plot2.addItem(curve) self.curves[name] = curve i += 1 self.plot1 = plot1 self.plot2 = plot2 self.updateViews() self.plot1.vb.sigResized.connect(self.updateViews) self.updateButtonsEnabled() self._mw.laserButton.clicked.connect(self.changeLaserState) self._mw.shutterButton.clicked.connect(self.changeShutterState) self.sigLaser.connect(self._laser_logic.set_laser_state) self.sigShutter.connect(self._laser_logic.set_shutter_state) self.sigCurrent.connect(self._laser_logic.set_current) self.sigPower.connect(self._laser_logic.set_power) self.sigCtrlMode.connect(self._laser_logic.set_control_mode) self._mw.controlModeButtonGroup.buttonClicked.connect(self.changeControlMode) self.sliderProxy = pg.SignalProxy(self._mw.setValueVerticalSlider.valueChanged, 0.1, 5, self.updateFromSlider) self._mw.setValueDoubleSpinBox.editingFinished.connect(self.updateFromSpinBox) self._laser_logic.sigUpdate.connect(self.updateGui)
def __init__(self, sandbox, *args, **kwargs): pg.GraphicsLayoutWidget.__init__(self, **kwargs) self.sandbox = sandbox self.plots = [ DisplacementPlot( sandbox, title='North', component=lambda m: m.north), DisplacementPlot( sandbox, title='East', component=lambda m: m.east), DisplacementVectorPlot( sandbox, title='Down', component=lambda m: m.down), DisplacementPlot( sandbox, title='LOS', component=lambda m: m.displacement)] self.plots[-1].addHintText() self._mov_sig = pg.SignalProxy( self.scene().sigMouseMoved, rateLimit=60, slot=self.mouseMoved) for ip, plt in enumerate(self.plots): row = ip / 2 col = ip % 2 + 1 self.addItem(plt, row=row, col=col) plt.showGrid(x=True, y=True) plt.hideAxis('bottom') plt.hideAxis('left') plt.vb.border = pg.mkPen(50, 50, 50) if ip != 0: plt.setXLink(self.plots[0]) plt.setYLink(self.plots[0]) def getAxis(plt, orientation, label): axis = pg.AxisItem( orientation=orientation, linkView=plt.vb) axis.setLabel(label, units='m') return axis plts = self.plots self.addItem(getAxis(plts[0], 'left', 'Northing'), row=0, col=0) self.addItem(getAxis(plts[1], 'left', 'Northing'), row=1, col=0) self.addItem(getAxis(plts[0], 'bottom', 'Easting'), row=2, col=1) self.addItem(getAxis(plts[1], 'bottom', 'Easting'), row=2, col=2) for plt in self.plots: plt.vb.menu = QtGui.QMenu(self)
def __init__(self, sandbox, *args, **kwargs): pg.GraphicsLayoutWidget.__init__(self, **kwargs) self.sandbox = sandbox self.plots = [ DisplacementPlot( sandbox, title='Scene Displacement', component=lambda m: m.reference.scene.displacement), DisplacementPlot( sandbox, title='Model Residual', component=lambda m: m.reference.difference)] self.plots[-1].addHintText() self._mov_sig = pg.SignalProxy( self.scene().sigMouseMoved, rateLimit=60, slot=self.mouseMoved) for ip, plt in enumerate(self.plots): row = ip / 2 col = ip % 2 + 1 self.addItem(plt, row=row, col=col) plt.showGrid(x=True, y=True) plt.hideAxis('bottom') plt.hideAxis('left') plt.vb.border = pg.mkPen(50, 50, 50) if ip != 0: plt.setXLink(self.plots[0]) plt.setYLink(self.plots[0]) def getAxis(plt, orientation, label): axis = pg.AxisItem( orientation=orientation, linkView=plt.vb) axis.setLabel(label, units='m') return axis plts = self.plots self.addItem(getAxis(plts[0], 'left', 'Northing'), row=0, col=0) self.addItem(getAxis(plts[1], 'left', 'Northing'), row=1, col=0) self.addItem(getAxis(plts[0], 'bottom', 'Easting'), row=2, col=1) self.addItem(getAxis(plts[1], 'bottom', 'Easting'), row=2, col=2)
def __init__(self, model, los_arrow=False): pg.PlotWidget.__init__(self) self.model = model self.draw_time = 0. self._data = None border_pen = pg.mkPen(255, 255, 255, 50) self.image = pg.ImageItem( None, autoDownsample=False, border=border_pen, useOpenGL=True) self.setAspectLocked(True) self.plotItem.getAxis('left').setZValue(100) self.plotItem.getAxis('bottom').setZValue(100) self.setLabels( bottom=('Easting', 'm'), left=('Northing', 'm')) self.hint = { 'east': 0., 'north': 0., 'value': num.nan, 'measure': self.component.title(), 'vlength': '03', 'precision': '3', } self.hint_text = pg.LabelItem( text='', justify='right', size='8pt', parent=self.plotItem) self.hint_text.anchor( itemPos=(1., 0.), parentPos=(1., 0.)) self.hint_text.text_template =\ '<span style="font-family: monospace; color: #fff;'\ 'background-color: #000;">'\ 'East {east:08.2f} m | North {north:08.2f} m | '\ '{measure} {value:{length}.{precision}f}</span>' self.hint_text.setOpacity(.6) self.addItem(self.image) self.update() self.transFromFrame() self._move_sig = pg.SignalProxy( self.image.scene().sigMouseMoved, rateLimit=25, slot=self.mouseMoved) if los_arrow: self.addLOSArrow() # self.addIsocurve() # self.scalebar()
