# -*- coding: utf-8 -*- """ PlotItem.py - Graphics item implementing a scalable ViewBox with plotting powers. Copyright 2010 Luke Campagnola Distributed under MIT/X11 license. See license.txt for more infomation. This class is one of the workhorses of pyqtgraph. It implements a graphics item with plots, labels, and scales which can be viewed inside a QGraphicsScene. If you want a widget that can be added to your GUI, see PlotWidget instead. This class is very heavily featured: - Automatically creates and manages PlotCurveItems - Fast display and update of plots - Manages zoom/pan ViewBox, scale, and label elements - Automatic scaling when data changes - Control panel with a huge feature set including averaging, decimation, display, power spectrum, svg/png export, plot linking, and more. """ from graphicsItems import * from plotConfigTemplate import * from PyQt4 import QtGui, QtCore, QtSvg from functions import * #from ObjectWorkaround import * #tryWorkaround(QtCore, QtGui) import weakref import numpy as np try: from WidgetGroup import * HAVE_WIDGETGROUP = True except: HAVE_WIDGETGROUP = False try: from metaarray import * HAVE_METAARRAY = True except: HAVE_METAARRAY = False class PlotItem(QtGui.QGraphicsWidget): """Plot graphics item that can be added to any graphics scene. Implements axis titles, scales, interactive viewbox.""" lastFileDir = None managers = {} def __init__(self, parent=None, name=None, labels=None, **kargs): QtGui.QGraphicsWidget.__init__(self, parent) ## Set up control buttons self.ctrlBtn = QtGui.QToolButton() self.ctrlBtn.setText('?') self.autoBtn = QtGui.QToolButton() self.autoBtn.setText('A') self.autoBtn.hide() for b in [self.ctrlBtn, self.autoBtn]: proxy = QtGui.QGraphicsProxyWidget(self) proxy.setWidget(b) proxy.setAcceptHoverEvents(False) b.setStyleSheet("background-color: #000000; color: #888; font-size: 6pt") QtCore.QObject.connect(self.ctrlBtn, QtCore.SIGNAL('clicked()'), self.ctrlBtnClicked) QtCore.QObject.connect(self.autoBtn, QtCore.SIGNAL('clicked()'), self.enableAutoScale) self.layout = QtGui.QGraphicsGridLayout() self.layout.setContentsMargins(1,1,1,1) self.setLayout(self.layout) self.layout.setHorizontalSpacing(0) self.layout.setVerticalSpacing(0) self.vb = ViewBox() QtCore.QObject.connect(self.vb, QtCore.SIGNAL('xRangeChanged'), self.xRangeChanged) QtCore.QObject.connect(self.vb, QtCore.SIGNAL('yRangeChanged'), self.yRangeChanged) QtCore.QObject.connect(self.vb, QtCore.SIGNAL('rangeChangedManually'), self.enableManualScale) QtCore.QObject.connect(self.vb, QtCore.SIGNAL('viewChanged'), self.viewChanged) self.layout.addItem(self.vb, 2, 1) self.alpha = 1.0 self.autoAlpha = True self.spectrumMode = False self.autoScale = [True, True] ## Create and place scale items self.scales = { 'top': {'item': ScaleItem(orientation='top', linkView=self.vb), 'pos': (1, 1)}, 'bottom': {'item': ScaleItem(orientation='bottom', linkView=self.vb), 'pos': (3, 1)}, 'left': {'item': ScaleItem(orientation='left', linkView=self.vb), 'pos': (2, 0)}, 'right': {'item': ScaleItem(orientation='right', linkView=self.vb), 'pos': (2, 2)} } for k in self.scales: self.layout.addItem(self.scales[k]['item'], *self.scales[k]['pos']) ## Create and place label items #self.labels = { #'title': {'item': LabelItem('title', size='11pt'), 'pos': (0, 2), 'text': ''}, #'top': {'item': LabelItem('top'), 'pos': (1, 2), 'text': '', 'units': '', 'unitPrefix': ''}, #'bottom': {'item': LabelItem('bottom'), 'pos': (5, 2), 'text': '', 'units': '', 'unitPrefix': ''}, #'left': {'item': LabelItem('left'), 'pos': (3, 0), 'text': '', 'units': '', 'unitPrefix': ''}, #'right': {'item': LabelItem('right'), 'pos': (3, 4), 'text': '', 'units': '', 'unitPrefix': ''} #} #self.labels['left']['item'].setAngle(-90) #self.labels['right']['item'].setAngle(-90) #for k in self.labels: #self.layout.addItem(self.labels[k]['item'], *self.labels[k]['pos']) self.titleLabel = LabelItem('', size='11pt') self.layout.addItem(self.titleLabel, 0, 1) self.setTitle(None) ## hide for i in range(4): self.layout.setRowPreferredHeight(i, 0) self.layout.setRowMinimumHeight(i, 0) self.layout.setRowSpacing(i, 0) self.layout.setRowStretchFactor(i, 1) for i in range(3): self.layout.setColumnPreferredWidth(i, 0) self.layout.setColumnMinimumWidth(i, 0) self.layout.setColumnSpacing(i, 0) self.layout.setColumnStretchFactor(i, 1) self.layout.setRowStretchFactor(2, 100) self.layout.setColumnStretchFactor(1, 100) ## Wrap a few methods from viewBox for m in ['setXRange', 'setYRange', 'setRange', 'autoRange', 'viewRect', 'setMouseEnabled']: setattr(self, m, getattr(self.vb, m)) self.items = [] self.curves = [] self.dataItems = [] self.paramList = {} self.avgCurves = {} ### Set up context menu w = QtGui.QWidget() self.ctrl = c = Ui_Form() c.setupUi(w) dv = QtGui.QDoubleValidator(self) self.ctrlMenu = QtGui.QMenu() ac = QtGui.QWidgetAction(self) ac.setDefaultWidget(w) self.ctrlMenu.addAction(ac) if HAVE_WIDGETGROUP: self.stateGroup = WidgetGroup(self.ctrlMenu) self.fileDialog = None self.xLinkPlot = None self.yLinkPlot = None self.linksBlocked = False #self.ctrlBtn.setFixedWidth(60) self.setAcceptHoverEvents(True) ## Connect control widgets QtCore.QObject.connect(c.xMinText, QtCore.SIGNAL('editingFinished()'), self.setManualXScale) QtCore.QObject.connect(c.xMaxText, QtCore.SIGNAL('editingFinished()'), self.setManualXScale) QtCore.QObject.connect(c.yMinText, QtCore.SIGNAL('editingFinished()'), self.setManualYScale) QtCore.QObject.connect(c.yMaxText, QtCore.SIGNAL('editingFinished()'), self.setManualYScale) QtCore.QObject.connect(c.xManualRadio, QtCore.SIGNAL('clicked()'), self.updateXScale) QtCore.QObject.connect(c.yManualRadio, QtCore.SIGNAL('clicked()'), self.updateYScale) QtCore.QObject.connect(c.xAutoRadio, QtCore.SIGNAL('clicked()'), self.updateXScale) QtCore.QObject.connect(c.yAutoRadio, QtCore.SIGNAL('clicked()'), self.updateYScale) QtCore.QObject.connect(c.xAutoPercentSpin, QtCore.SIGNAL('valueChanged(int)'), self.replot) QtCore.QObject.connect(c.yAutoPercentSpin, QtCore.SIGNAL('valueChanged(int)'), self.replot) #QtCore.QObject.connect(c.xLogCheck, QtCore.SIGNAL('toggled(bool)'), self.setXLog) #QtCore.QObject.connect(c.yLogCheck, QtCore.SIGNAL('toggled(bool)'), self.setYLog) QtCore.QObject.connect(c.alphaGroup, QtCore.SIGNAL('toggled(bool)'), self.updateAlpha) QtCore.QObject.connect(c.alphaSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateAlpha) QtCore.QObject.connect(c.autoAlphaCheck, QtCore.SIGNAL('toggled(bool)'), self.updateAlpha) QtCore.QObject.connect(c.gridGroup, QtCore.SIGNAL('toggled(bool)'), self.updateGrid) QtCore.QObject.connect(c.gridAlphaSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateGrid) QtCore.QObject.connect(c.powerSpectrumGroup, QtCore.SIGNAL('toggled(bool)'), self.updateSpectrumMode) QtCore.QObject.connect(c.saveSvgBtn, QtCore.SIGNAL('clicked()'), self.saveSvgClicked) QtCore.QObject.connect(c.saveImgBtn, QtCore.SIGNAL('clicked()'), self.saveImgClicked) QtCore.QObject.connect(c.saveCsvBtn, QtCore.SIGNAL('clicked()'), self.saveCsvClicked) #QtCore.QObject.connect(c.gridGroup, QtCore.SIGNAL('toggled(bool)'), self.updateGrid) #QtCore.QObject.connect(c.gridAlphaSlider, QtCore.SIGNAL('valueChanged(int)'), self.updateGrid) QtCore.QObject.connect(self.ctrl.xLinkCombo, QtCore.SIGNAL('currentIndexChanged(int)'), self.xLinkComboChanged) QtCore.QObject.connect(self.ctrl.yLinkCombo, QtCore.SIGNAL('currentIndexChanged(int)'), self.yLinkComboChanged) QtCore.QObject.connect(c.downsampleSpin, QtCore.SIGNAL('valueChanged(int)'), self.updateDownsampling) QtCore.QObject.connect(self.ctrl.avgParamList, QtCore.SIGNAL('itemClicked(QListWidgetItem*)'), self.avgParamListClicked) QtCore.QObject.connect(self.ctrl.averageGroup, QtCore.SIGNAL('toggled(bool)'), self.avgToggled) #QtCore.QObject.connect(self.ctrl.pointsGroup, QtCore.SIGNAL('toggled(bool)'), self.updatePointMode) #QtCore.QObject.connect(self.ctrl.autoPointsCheck, QtCore.SIGNAL('toggled(bool)'), self.updatePointMode) QtCore.QObject.connect(self.ctrl.maxTracesCheck, QtCore.SIGNAL('toggled(bool)'), self.updateDecimation) QtCore.QObject.connect(self.ctrl.maxTracesSpin, QtCore.SIGNAL('valueChanged(int)'), self.updateDecimation) QtCore.QObject.connect(c.xMouseCheck, QtCore.SIGNAL('toggled(bool)'), self.mouseCheckChanged) QtCore.QObject.connect(c.yMouseCheck, QtCore.SIGNAL('toggled(bool)'), self.mouseCheckChanged) self.xLinkPlot = None self.yLinkPlot = None self.linksBlocked = False self.manager = None #self.showLabel('right', False) #self.showLabel('top', False) #self.showLabel('title', False) #self.showLabel('left', False) #self.showLabel('bottom', False) self.showScale('right', False) self.showScale('top', False) self.showScale('left', True) self.showScale('bottom', True) if name is not None: self.registerPlot(name) if labels is not None: for k in labels: if isinstance(labels[k], basestring): labels[k] = (labels[k],) self.setLabel(k, *labels[k]) if len(kargs) > 0: self.plot(**kargs) def __del__(self): if self.manager is not None: self.manager.removeWidget(self.name) def registerPlot(self, name): self.name = name win = str(self.window()) #print "register", name, win if win not in PlotItem.managers: PlotItem.managers[win] = PlotWidgetManager() self.manager = PlotItem.managers[win] self.manager.addWidget(self, name) QtCore.QObject.connect(self.manager, QtCore.SIGNAL('widgetListChanged'), self.updatePlotList) self.updatePlotList() def updatePlotList(self): """Update the list of all plotWidgets in the "link" combos""" #print "update plot list", self try: for sc in [self.ctrl.xLinkCombo, self.ctrl.yLinkCombo]: current = str(sc.currentText()) sc.clear() sc.addItem("") if self.manager is not None: for w in self.manager.listWidgets(): #print w if w == self.name: continue sc.addItem(w) except: import gc refs= gc.get_referrers(self) print " error during update. Referrers are:", refs raise def updateGrid(self, *args): g = self.ctrl.gridGroup.isChecked() if g: g = self.ctrl.gridAlphaSlider.value() for k in self.scales: self.scales[k]['item'].setGrid(g) def viewGeometry(self): """return the screen geometry of the viewbox""" v = self.scene().views()[0] b = self.vb.mapRectToScene(self.vb.boundingRect()) wr = v.mapFromScene(b).boundingRect() pos = v.mapToGlobal(v.pos()) wr.adjust(pos.x(), pos.y(), pos.x(), pos.y()) return wr def viewChanged(self, *args): self.emit(QtCore.SIGNAL('viewChanged'), *args) def blockLink(self, b): self.linksBlocked = b def xLinkComboChanged(self): self.setXLink(str(self.ctrl.xLinkCombo.currentText())) def yLinkComboChanged(self): self.setYLink(str(self.ctrl.yLinkCombo.currentText())) def setXLink(self, plot=None): """Link this plot's X axis to another plot (pass either the PlotItem/PlotWidget or the registered name of the plot)""" if isinstance(plot, basestring): if self.manager is None: return if self.xLinkPlot is not None: self.manager.unlinkX(self, self.xLinkPlot) plot = self.manager.getWidget(plot) if not isinstance(plot, PlotItem) and hasattr(plot, 'getPlotItem'): plot = plot.getPlotItem() self.xLinkPlot = plot if plot is not None: self.setManualXScale() self.manager.linkX(self, plot) def setYLink(self, plot=None): """Link this plot's Y axis to another plot (pass either the PlotItem/PlotWidget or the registered name of the plot)""" if isinstance(plot, basestring): if self.manager is None: return if self.yLinkPlot is not None: self.manager.unlinkY(self, self.yLinkPlot) plot = self.manager.getWidget(plot) if not isinstance(plot, PlotItem) and hasattr(plot, 'getPlotItem'): plot = plot.getPlotItem() self.yLinkPlot = plot if plot is not None: self.setManualYScale() self.manager.linkY(self, plot) def linkXChanged(self, plot): """Called when a linked plot has changed its X scale""" #print "update from", plot if self.linksBlocked: return pr = plot.vb.viewRect() pg = plot.viewGeometry() if pg is None: #print " return early" return sg = self.viewGeometry() upp = float(pr.width()) / pg.width() x1 = pr.left() + (sg.x()-pg.x()) * upp x2 = x1 + sg.width() * upp plot.blockLink(True) self.setManualXScale() self.setXRange(x1, x2, padding=0) plot.blockLink(False) self.replot() def linkYChanged(self, plot): """Called when a linked plot has changed its Y scale""" if self.linksBlocked: return pr = plot.vb.viewRect() pg = plot.vb.boundingRect() sg = self.vb.boundingRect() upp = float(pr.height()) / pg.height() y1 = pr.bottom() + (sg.y()-pg.y()) * upp y2 = y1 + sg.height() * upp plot.blockLink(True) self.setManualYScale() self.setYRange(y1, y2, padding=0) plot.blockLink(False) self.replot() def avgToggled(self, b): if b: self.recomputeAverages() for k in self.avgCurves: self.avgCurves[k][1].setVisible(b) def avgParamListClicked(self, item): name = str(item.text()) self.paramList[name] = (item.checkState() == QtCore.Qt.Checked) self.recomputeAverages() def recomputeAverages(self): if not self.ctrl.averageGroup.isChecked(): return for k in self.avgCurves: self.removeItem(self.avgCurves[k][1]) #Qwt.QwtPlotCurve.detach(self.avgCurves[k][1]) self.avgCurves = {} for c in self.curves: self.addAvgCurve(c) self.replot() def addAvgCurve(self, curve): """Add a single curve into the pool of curves averaged together""" ## If there are plot parameters, then we need to determine which to average together. remKeys = [] addKeys = [] if self.ctrl.avgParamList.count() > 0: ### First determine the key of the curve to which this new data should be averaged for i in range(self.ctrl.avgParamList.count()): item = self.ctrl.avgParamList.item(i) if item.checkState() == QtCore.Qt.Checked: remKeys.append(str(item.text())) else: addKeys.append(str(item.text())) if len(remKeys) < 1: ## In this case, there would be 1 average plot for each data plot; not useful. return p = curve.meta().copy() for k in p: if type(k) is tuple: p['.'.join(k)] = p[k] del p[k] for rk in remKeys: if rk in p: del p[rk] for ak in addKeys: if ak not in p: p[ak] = None key = tuple(p.items()) ### Create a new curve if needed if key not in self.avgCurves: plot = PlotCurveItem() plot.setPen(mkPen([0, 200, 0])) plot.setShadowPen(mkPen([0, 0, 0, 100], 3)) plot.setAlpha(1.0, False) plot.setZValue(100) self.addItem(plot) #Qwt.QwtPlotCurve.attach(plot, self) self.avgCurves[key] = [0, plot] self.avgCurves[key][0] += 1 (n, plot) = self.avgCurves[key] ### Average data together (x, y) = curve.getData() if plot.yData is not None: newData = plot.yData * (n-1) / float(n) + y * 1.0 / float(n) plot.setData(plot.xData, newData) else: plot.setData(x, y) def mouseCheckChanged(self): state = [self.ctrl.xMouseCheck.isChecked(), self.ctrl.yMouseCheck.isChecked()] self.vb.setMouseEnabled(*state) def xRangeChanged(self, _, range): if any(np.isnan(range)) or any(np.isinf(range)): raise Exception("yRange invalid: %s. Signal came from %s" % (str(range), str(self.sender()))) self.ctrl.xMinText.setText('%0.5g' % range[0]) self.ctrl.xMaxText.setText('%0.5g' % range[1]) ## automatically change unit scale maxVal = max(abs(range[0]), abs(range[1])) (scale, prefix) = siScale(maxVal) #for l in ['top', 'bottom']: #if self.getLabel(l).isVisible(): #self.setLabel(l, unitPrefix=prefix) #self.getScale(l).setScale(scale) #else: #self.setLabel(l, unitPrefix='') #self.getScale(l).setScale(1.0) self.emit(QtCore.SIGNAL('xRangeChanged'), self, range) def yRangeChanged(self, _, range): if any(np.isnan(range)) or any(np.isinf(range)): raise Exception("yRange invalid: %s. Signal came from %s" % (str(range), str(self.sender()))) self.ctrl.yMinText.setText('%0.5g' % range[0]) self.ctrl.yMaxText.setText('%0.5g' % range[1]) ## automatically change unit scale maxVal = max(abs(range[0]), abs(range[1])) (scale, prefix) = siScale(maxVal) #for l in ['left', 'right']: #if self.getLabel(l).isVisible(): #self.setLabel(l, unitPrefix=prefix) #self.getScale(l).setScale(scale) #else: #self.setLabel(l, unitPrefix='') #self.getScale(l).setScale(1.0) self.emit(QtCore.SIGNAL('yRangeChanged'), self, range) def enableAutoScale(self): self.ctrl.xAutoRadio.setChecked(True) self.ctrl.yAutoRadio.setChecked(True) self.autoBtn.hide() self.updateXScale() self.updateYScale() self.replot() def updateXScale(self): """Set plot to autoscale or not depending on state of radio buttons""" if self.ctrl.xManualRadio.isChecked(): self.setManualXScale() else: self.setAutoXScale() self.replot() def updateYScale(self, b=False): """Set plot to autoscale or not depending on state of radio buttons""" if self.ctrl.yManualRadio.isChecked(): self.setManualYScale() else: self.setAutoYScale() self.replot() def enableManualScale(self, v=[True, True]): if v[0]: self.autoScale[0] = False self.ctrl.xManualRadio.setChecked(True) #self.setManualXScale() if v[1]: self.autoScale[1] = False self.ctrl.yManualRadio.setChecked(True) #self.setManualYScale() self.autoBtn.show() #self.replot() def setManualXScale(self): self.autoScale[0] = False x1 = float(self.ctrl.xMinText.text()) x2 = float(self.ctrl.xMaxText.text()) self.ctrl.xManualRadio.setChecked(True) self.setXRange(x1, x2, padding=0) self.autoBtn.show() #self.replot() def setManualYScale(self): self.autoScale[1] = False y1 = float(self.ctrl.yMinText.text()) y2 = float(self.ctrl.yMaxText.text()) self.ctrl.yManualRadio.setChecked(True) self.setYRange(y1, y2, padding=0) self.autoBtn.show() #self.replot() def setAutoXScale(self): self.autoScale[0] = True self.ctrl.xAutoRadio.setChecked(True) #self.replot() def setAutoYScale(self): self.autoScale[1] = True self.ctrl.yAutoRadio.setChecked(True) #self.replot() def addItem(self, item, *args): self.items.append(item) self.vb.addItem(item, *args) def removeItem(self, item): if not item in self.items: return self.items.remove(item) if item in self.dataItems: self.dataItems.remove(item) if item.scene() is not None: self.vb.removeItem(item) if item in self.curves: self.curves.remove(item) self.updateDecimation() self.updateParamList() item.connect(item, QtCore.SIGNAL('plotChanged'), self.plotChanged) def clear(self): for i in self.items[:]: self.removeItem(i) self.avgCurves = {} def clearPlots(self): for i in self.curves[:]: self.removeItem(i) self.avgCurves = {} def plot(self, data=None, data2=None, x=None, y=None, clear=False, params=None, pen=None): """Add a new plot curve. Data may be specified a few ways: plot(yVals) # x vals will be integers plot(xVals, yVals) plot(y=yVals, x=xVals) """ if y is not None: data = y if data2 is not None: x = data data = data2 if clear: self.clear() if params is None: params = {} if HAVE_METAARRAY and isinstance(data, MetaArray): curve = self._plotMetaArray(data, x=x) elif isinstance(data, np.ndarray): curve = self._plotArray(data, x=x) elif isinstance(data, list): if x is not None: x = np.array(x) curve = self._plotArray(np.array(data), x=x) elif data is None: curve = PlotCurveItem() else: raise Exception('Not sure how to plot object of type %s' % type(data)) #print data, curve self.addCurve(curve, params) if pen is not None: curve.setPen(mkPen(pen)) return curve def addDataItem(self, item): self.addItem(item) self.dataItems.append(item) def addCurve(self, c, params=None): if params is None: params = {} c.setMeta(params) self.curves.append(c) #Qwt.QwtPlotCurve.attach(c, self) self.addItem(c) ## configure curve for this plot (alpha, auto) = self.alphaState() c.setAlpha(alpha, auto) c.setSpectrumMode(self.ctrl.powerSpectrumGroup.isChecked()) c.setDownsampling(self.downsampleMode()) c.setPointMode(self.pointMode()) ## Hide older plots if needed self.updateDecimation() ## Add to average if needed self.updateParamList() if self.ctrl.averageGroup.isChecked(): self.addAvgCurve(c) c.connect(c, QtCore.SIGNAL('plotChanged'), self.plotChanged) self.plotChanged() def plotChanged(self, curve=None): ## Recompute auto range if needed for ax in [0, 1]: if self.autoScale[ax]: percentScale = [self.ctrl.xAutoPercentSpin.value(), self.ctrl.yAutoPercentSpin.value()][ax] * 0.01 mn = None mx = None for c in self.curves + [c[1] for c in self.avgCurves.values()] + self.dataItems: if not c.isVisible(): continue cmn, cmx = c.getRange(ax, percentScale) if mn is None or cmn < mn: mn = cmn if mx is None or cmx > mx: mx = cmx if mn is None or mx is None or any(np.isnan([mn, mx])) or any(np.isinf([mn, mx])): continue if mn == mx: mn -= 1 mx += 1 self.setRange(ax, mn, mx) #print "Auto range:", ax, mn, mx def replot(self): self.plotChanged() self.update() def updateParamList(self): self.ctrl.avgParamList.clear() ## Check to see that each parameter for each curve is present in the list #print "\nUpdate param list", self #print "paramList:", self.paramList for c in self.curves: #print " curve:", c for p in c.meta().keys(): #print " param:", p if type(p) is tuple: p = '.'.join(p) ## If the parameter is not in the list, add it. matches = self.ctrl.avgParamList.findItems(p, QtCore.Qt.MatchExactly) #print " matches:", matches if len(matches) == 0: i = QtGui.QListWidgetItem(p) if p in self.paramList and self.paramList[p] is True: #print " set checked" i.setCheckState(QtCore.Qt.Checked) else: #print " set unchecked" i.setCheckState(QtCore.Qt.Unchecked) self.ctrl.avgParamList.addItem(i) else: i = matches[0] self.paramList[p] = (i.checkState() == QtCore.Qt.Checked) #print "paramList:", self.paramList def writeSvg(self, fileName=None): if fileName is None: fileName = QtGui.QFileDialog.getSaveFileName() fileName = str(fileName) PlotItem.lastFileDir = os.path.dirname(fileName) self.svg = QtSvg.QSvgGenerator() self.svg.setFileName(fileName) res = 120. #bounds = self.mapRectToScene(self.boundingRect()) view = self.scene().views()[0] bounds = view.viewport().rect() bounds = QtCore.QRectF(0, 0, bounds.width(), bounds.height()) self.svg.setResolution(res) #self.svg.setSize(QtCore.QSize(self.size().width(), self.size().height())) self.svg.setViewBox(bounds) self.svg.setSize(QtCore.QSize(bounds.width(), bounds.height())) painter = QtGui.QPainter(self.svg) #self.scene().render(painter, QtCore.QRectF(), view.mapToScene(bounds).boundingRect()) #items = self.scene().items() #self.scene().views()[0].drawItems(painter, len(items), items) #print view, type(view) view.render(painter, bounds) painter.end() ## Workaround to set pen widths correctly import re data = open(fileName).readlines() for i in range(len(data)): line = data[i] m = re.match(r'(= split: curves[i].show() else: if self.ctrl.forgetTracesCheck.isChecked(): curves[i].free() self.removeItem(curves[i]) else: curves[i].hide() def updateAlpha(self, *args): (alpha, auto) = self.alphaState() for c in self.curves: c.setAlpha(alpha**2, auto) #self.replot(autoRange=False) def alphaState(self): enabled = self.ctrl.alphaGroup.isChecked() auto = self.ctrl.autoAlphaCheck.isChecked() alpha = float(self.ctrl.alphaSlider.value()) / self.ctrl.alphaSlider.maximum() if auto: alpha = 1.0 ## should be 1/number of overlapping plots if not enabled: auto = False alpha = 1.0 return (alpha, auto) def pointMode(self): if self.ctrl.pointsGroup.isChecked(): if self.ctrl.autoPointsCheck.isChecked(): mode = None else: mode = True else: mode = False return mode def resizeEvent(self, ev): self.ctrlBtn.move(0, self.size().height() - self.ctrlBtn.size().height()) self.autoBtn.move(self.ctrlBtn.width(), self.size().height() - self.autoBtn.size().height()) def hoverMoveEvent(self, ev): self.mousePos = ev.pos() self.mouseScreenPos = ev.screenPos() def ctrlBtnClicked(self): self.ctrlMenu.popup(self.mouseScreenPos) def getLabel(self, key): pass def _checkScaleKey(self, key): if key not in self.scales: raise Exception("Scale '%s' not found. Scales are: %s" % (key, str(self.scales.keys()))) def getScale(self, key): self._checkScaleKey(key) return self.scales[key]['item'] def setLabel(self, key, text=None, units=None, unitPrefix=None, **args): self.getScale(key).setLabel(text=text, units=units, unitPrefix=unitPrefix, **args) def showLabel(self, key, show=True): self.getScale(key).showLabel(show) def setTitle(self, title=None, **args): if title is None: self.titleLabel.setVisible(False) self.layout.setRowFixedHeight(0, 0) self.titleLabel.setMaximumHeight(0) else: self.titleLabel.setMaximumHeight(30) self.layout.setRowFixedHeight(0, 30) self.titleLabel.setVisible(True) self.titleLabel.setText(title, **args) def showScale(self, key, show=True): s = self.getScale(key) p = self.scales[key]['pos'] if show: s.show() else: s.hide() def _plotArray(self, arr, x=None): if arr.ndim != 1: raise Exception("Array must be 1D to plot (shape is %s)" % arr.shape) if x is None: x = arange(arr.shape[0]) if x.ndim != 1: raise Exception("X array must be 1D to plot (shape is %s)" % x.shape) c = PlotCurveItem(arr, x=x) return c def _plotMetaArray(self, arr, x=None, autoLabel=True): inf = arr.infoCopy() if arr.ndim != 1: raise Exception('can only automatically plot 1 dimensional arrays.') ## create curve try: xv = arr.xvals(0) #print 'xvals:', xv except: if x is None: xv = arange(arr.shape[0]) else: xv = x c = PlotCurveItem() c.setData(x=xv, y=arr.view(np.ndarray)) if autoLabel: name = arr._info[0].get('name', None) units = arr._info[0].get('units', None) self.setLabel('bottom', text=name, units=units) name = arr._info[1].get('name', None) units = arr._info[1].get('units', None) self.setLabel('left', text=name, units=units) return c def saveSvgClicked(self): self.fileDialog = QtGui.QFileDialog() #if PlotItem.lastFileDir is not None: #self.fileDialog.setDirectory(PlotItem.lastFileDir) self.fileDialog.setFileMode(QtGui.QFileDialog.AnyFile) self.fileDialog.setAcceptMode(QtGui.QFileDialog.AcceptSave) if PlotItem.lastFileDir is not None: self.fileDialog.setDirectory(PlotItem.lastFileDir) self.fileDialog.show() QtCore.QObject.connect(self.fileDialog, QtCore.SIGNAL('fileSelected(const QString)'), self.writeSvg) #def svgFileSelected(self, fileName): ##PlotWidget.lastFileDir = os.path.split(fileName)[0] #self.writeSvg(str(fileName)) def saveImgClicked(self): self.fileDialog = QtGui.QFileDialog() #if PlotItem.lastFileDir is not None: #self.fileDialog.setDirectory(PlotItem.lastFileDir) if PlotItem.lastFileDir is not None: self.fileDialog.setDirectory(PlotItem.lastFileDir) self.fileDialog.setFileMode(QtGui.QFileDialog.AnyFile) self.fileDialog.setAcceptMode(QtGui.QFileDialog.AcceptSave) self.fileDialog.show() QtCore.QObject.connect(self.fileDialog, QtCore.SIGNAL('fileSelected(const QString)'), self.writeImage) def saveCsvClicked(self): self.fileDialog = QtGui.QFileDialog() #if PlotItem.lastFileDir is not None: #self.fileDialog.setDirectory(PlotItem.lastFileDir) if PlotItem.lastFileDir is not None: self.fileDialog.setDirectory(PlotItem.lastFileDir) self.fileDialog.setFileMode(QtGui.QFileDialog.AnyFile) self.fileDialog.setAcceptMode(QtGui.QFileDialog.AcceptSave) self.fileDialog.show() QtCore.QObject.connect(self.fileDialog, QtCore.SIGNAL('fileSelected(const QString)'), self.writeCsv) #def imgFileSelected(self, fileName): ##PlotWidget.lastFileDir = os.path.split(fileName)[0] #self.writeImage(str(fileName)) class PlotWidgetManager(QtCore.QObject): """Used for managing communication between PlotWidgets""" def __init__(self): QtCore.QObject.__init__(self) self.widgets = weakref.WeakValueDictionary() # Don't keep PlotWidgets around just because they are listed here def addWidget(self, w, name): self.widgets[name] = w self.emit(QtCore.SIGNAL('widgetListChanged'), self.widgets.keys()) def removeWidget(self, name): if name in self.widgets: del self.widgets[name] self.emit(QtCore.SIGNAL('widgetListChanged'), self.widgets.keys()) def listWidgets(self): return self.widgets.keys() def getWidget(self, name): if name not in self.widgets: return None else: return self.widgets[name] def linkX(self, p1, p2): QtCore.QObject.connect(p1, QtCore.SIGNAL('xRangeChanged'), p2.linkXChanged) QtCore.QObject.connect(p2, QtCore.SIGNAL('xRangeChanged'), p1.linkXChanged) p1.linkXChanged(p2) #p2.setManualXScale() def unlinkX(self, p1, p2): QtCore.QObject.disconnect(p1, QtCore.SIGNAL('xRangeChanged'), p2.linkXChanged) QtCore.QObject.disconnect(p2, QtCore.SIGNAL('xRangeChanged'), p1.linkXChanged) def linkY(self, p1, p2): QtCore.QObject.connect(p1, QtCore.SIGNAL('yRangeChanged'), p2.linkYChanged) QtCore.QObject.connect(p2, QtCore.SIGNAL('yRangeChanged'), p1.linkYChanged) p1.linkYChanged(p2) #p2.setManualYScale() def unlinkY(self, p1, p2): QtCore.QObject.disconnect(p1, QtCore.SIGNAL('yRangeChanged'), p2.linkYChanged) QtCore.QObject.disconnect(p2, QtCore.SIGNAL('yRangeChanged'), p1.linkYChanged)