From 5e7eff6c4dcf2c33519dd3536e622e26925b5811 Mon Sep 17 00:00:00 2001 From: Robert Jordens Date: Sat, 12 Mar 2016 12:42:33 +0100 Subject: [PATCH] scanwidget: changes as of edaba53 --- artiq/gui/scanwidget.py | 119 +++++++++++++++------------------------- 1 file changed, 45 insertions(+), 74 deletions(-) diff --git a/artiq/gui/scanwidget.py b/artiq/gui/scanwidget.py index 95d3580d8..d0418212c 100644 --- a/artiq/gui/scanwidget.py +++ b/artiq/gui/scanwidget.py @@ -288,16 +288,33 @@ class ScanSlider(QtWidgets.QSlider): # real (Sliders) => pixel (one pixel movement of sliders would increment by X) # => range (minimum granularity that sliders understand). -class ScanProxy(QtCore.QObject): +class ScanWidget(QtWidgets.QWidget): sigStartMoved = QtCore.pyqtSignal(float) sigStopMoved = QtCore.pyqtSignal(float) sigNumChanged = QtCore.pyqtSignal(int) - def __init__(self, slider, axis, zoomMargin, dynamicRange, zoomFactor): - QtCore.QObject.__init__(self) - self.axis = axis + def __init__(self, zoomFactor=1.05, zoomMargin=.1, dynamicRange=1e9): + QtWidgets.QWidget.__init__(self) + self.slider = slider = ScanSlider() + self.axis = axis = ScanAxis() axis.proxy = self - self.slider = slider + + # Layout. + layout = QtWidgets.QVBoxLayout() + layout.setSpacing(0) + layout.addWidget(axis) + layout.addWidget(slider) + self.setLayout(layout) + + # Context menu entries + self.menu = QtWidgets.QMenu(self) + viewRangeAct = QtWidgets.QAction("&View Range", self) + viewRangeAct.triggered.connect(self.viewRange) + self.menu.addAction(viewRangeAct) + snapRangeAct = QtWidgets.QAction("&Snap Range", self) + snapRangeAct.triggered.connect(self.snapRange) + self.menu.addAction(snapRangeAct) + self.realStart = -1. self.realStop = 1. self.numPoints = 11 @@ -320,6 +337,9 @@ class ScanProxy(QtCore.QObject): slider.sigStopMoved.connect(self.handleStopMoved) slider.sigStartMoved.connect(self.handleStartMoved) + def contextMenuEvent(self, ev): + self.menu.popup(ev.globalPos()) + # pixel vals for sliders: 0 to slider_width - 1 def realToPixel(self, val): a, b = self.realToPixelTransform @@ -341,32 +361,32 @@ class ScanProxy(QtCore.QObject): pixelVal = self.realToPixel(val) return self.slider.pixelPosToRangeValue(pixelVal) - def moveStop(self, val): + def setStop(self, val): sliderX = self.realToRange(val) self.slider.setStopPosition(sliderX) self.realStop = val self.axis.update() # Number of points ticks changed positions. - def moveStart(self, val): + def setStart(self, val): sliderX = self.realToRange(val) self.slider.setStartPosition(sliderX) self.realStart = val self.axis.update() + def setNumPoints(self, val): + self.numPoints = val + self.axis.update() + def handleStopMoved(self, rangeVal): # FIXME: this relies on the event being fed back and ending up calling - # moveStop() + # setStop() self.sigStopMoved.emit(self.rangeToReal(rangeVal)) def handleStartMoved(self, rangeVal): # FIXME: this relies on the event being fed back and ending up calling - # moveStart() + # setStart() self.sigStartMoved.emit(self.rangeToReal(rangeVal)) - def setNumPoints(self, val): - self.numPoints = val - self.axis.update() - def handleZoom(self, zoomFactor, mouseXPos): newScale = self.realToPixelTransform[1] * zoomFactor refReal = self.pixelToReal(mouseXPos) @@ -375,8 +395,8 @@ class ScanProxy(QtCore.QObject): if zoomFactor > 1 and abs(newZero) > self.dynamicRange: return self.realToPixelTransform = newLeft, newScale - self.moveStop(self.realStop) - self.moveStart(self.realStart) + self.setStop(self.realStop) + self.setStart(self.realStart) def viewRange(self): newScale = self.slider.effectiveWidth()/abs( @@ -387,8 +407,8 @@ class ScanProxy(QtCore.QObject): newScale = min(newScale, self.dynamicRange/abs(newCenter)) newLeft = newCenter - self.slider.effectiveWidth()/2/newScale self.realToPixelTransform = newLeft, newScale - self.moveStop(self.realStop) - self.moveStart(self.realStart) + self.setStop(self.realStop) + self.setStart(self.realStart) self.axis.update() # Axis normally takes care to update itself during # zoom. In this code path however, the zoom didn't arrive via the axis # widget, so we need to notify manually. @@ -401,8 +421,8 @@ class ScanProxy(QtCore.QObject): def viewRangeInit(self): currRangeReal = abs(self.realStop - self.realStart) if currRangeReal == 0: - self.moveStop(self.realStop) - self.moveStart(self.realStart) + self.setStop(self.realStop) + self.setStart(self.realStart) # Ill-formed snap range- move the sliders anyway, # because we arrived here during widget # initialization, where the slider positions are likely invalid. @@ -426,7 +446,7 @@ class ScanProxy(QtCore.QObject): # consequence of ValueChanged signal in spinboxes. The slider widget # has guards against recursive signals in setSpan(). # FIXME: this relies on the events being fed back and ending up - # calling moveStart() and moveStop() + # calling setStart() and setStop() self.sigStopMoved.emit(newStop) self.sigStartMoved.emit(newStart) @@ -444,7 +464,8 @@ class ScanProxy(QtCore.QObject): # calling setNumPoints() self.sigNumChanged.emit(self.numPoints + z) self.axis.update() - else: + ev.accept() + elif ev.modifiers() & QtCore.Qt.ControlModifier: z = self.zoomFactor**(y / 120.) # Remove the slider-handle shift correction, b/c none of the # other widgets know about it. If we have the mouse directly @@ -452,7 +473,9 @@ class ScanProxy(QtCore.QObject): # doing zoom relative to the ticks which live in axis # pixel-space, not slider pixel-space. self.handleZoom(z, ev.x() - self.slider.handleWidth()/2) - ev.accept() + ev.accept() + else: + ev.ignore() def eventFilter(self, obj, ev): if ev.type() == QtCore.QEvent.Wheel: @@ -490,55 +513,3 @@ class ScanProxy(QtCore.QObject): # confident that the new slider position will still map to the # same positions in the new axis-space. return False - - -class ScanWidget(QtWidgets.QWidget): - sigStartMoved = QtCore.pyqtSignal(float) - sigStopMoved = QtCore.pyqtSignal(float) - sigNumChanged = QtCore.pyqtSignal(int) - - def __init__(self, zoomFactor=1.05, zoomMargin=.1, dynamicRange=1e9): - QtWidgets.QWidget.__init__(self) - self.slider = slider = ScanSlider() - self.axis = axis = ScanAxis() - self.proxy = ScanProxy(slider, axis, zoomMargin, dynamicRange, - zoomFactor) - - # Layout. - layout = QtWidgets.QVBoxLayout() - layout.setSpacing(0) - layout.addWidget(axis) - layout.addWidget(slider) - self.setLayout(layout) - - # Connect signals (minus context menu) - self.proxy.sigStopMoved.connect(self.sigStopMoved) - self.proxy.sigStartMoved.connect(self.sigStartMoved) - self.proxy.sigNumChanged.connect(self.sigNumChanged) - - # Context menu entries - self.menu = QtWidgets.QMenu(self) - viewRangeAct = QtWidgets.QAction("&View Range", self) - viewRangeAct.triggered.connect(self.viewRange) - self.menu.addAction(viewRangeAct) - snapRangeAct = QtWidgets.QAction("&Snap Range", self) - snapRangeAct.triggered.connect(self.snapRange) - self.menu.addAction(snapRangeAct) - - def setStop(self, val): - self.proxy.moveStop(val) - - def setStart(self, val): - self.proxy.moveStart(val) - - def setNumPoints(self, val): - self.proxy.setNumPoints(val) - - def viewRange(self): - self.proxy.viewRange() - - def snapRange(self): - self.proxy.snapRange() - - def contextMenuEvent(self, ev): - self.menu.popup(ev.globalPos())