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scanwidget: handle min, max, suffix (closes #352)
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1d8b0d46bc
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@ -139,20 +139,20 @@ class _RangeScan(LayoutWidget):
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scale = procdesc["scale"]
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def apply_properties(spinbox):
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spinbox.setDecimals(procdesc["ndecimals"])
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def apply_properties(widget):
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widget.setDecimals(procdesc["ndecimals"])
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if procdesc["global_min"] is not None:
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spinbox.setMinimum(procdesc["global_min"]/scale)
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widget.setMinimum(procdesc["global_min"]/scale)
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else:
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spinbox.setMinimum(float("-inf"))
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widget.setMinimum(float("-inf"))
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if procdesc["global_max"] is not None:
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spinbox.setMaximum(procdesc["global_max"]/scale)
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widget.setMaximum(procdesc["global_max"]/scale)
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else:
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spinbox.setMaximum(float("inf"))
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widget.setMaximum(float("inf"))
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if procdesc["global_step"] is not None:
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spinbox.setSingleStep(procdesc["global_step"]/scale)
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widget.setSingleStep(procdesc["global_step"]/scale)
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if procdesc["unit"]:
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spinbox.setSuffix(" " + procdesc["unit"])
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widget.setSuffix(" " + procdesc["unit"])
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scanner = ScanWidget()
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disable_scroll_wheel(scanner)
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@ -200,6 +200,7 @@ class _RangeScan(LayoutWidget):
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scanner.setStop(state["stop"]/scale)
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apply_properties(start)
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apply_properties(stop)
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apply_properties(scanner)
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class _ExplicitScan(LayoutWidget):
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@ -14,11 +14,12 @@ class ScanWidget(QtWidgets.QWidget):
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stopChanged = QtCore.pyqtSignal(float)
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numChanged = QtCore.pyqtSignal(int)
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def __init__(self, zoomFactor=1.05, zoomMargin=.1, dynamicRange=1e9):
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def __init__(self):
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QtWidgets.QWidget.__init__(self)
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self.zoomMargin = zoomMargin
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self.dynamicRange = dynamicRange
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self.zoomFactor = zoomFactor
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self.zoomMargin = .1
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self.zoomFactor = 1.05
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self.dynamicRange = 1e9
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self.suffix = ""
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self.ticker = Ticker()
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@ -40,6 +41,7 @@ class ScanWidget(QtWidgets.QWidget):
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qfm.lineSpacing())
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self._start, self._stop, self._num = None, None, None
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self._min, self._max = None, None
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self._axisView = None
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self._offset, self._drag, self._rubber = None, None, None
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@ -68,7 +70,15 @@ class ScanWidget(QtWidgets.QWidget):
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left = self.width()/2 - center*scale
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self._setView(left, scale)
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def _clamp(self, v):
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if self._min is not None:
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v = max(self._min, v)
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if self._max is not None:
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v = min(self._max, v)
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return v
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def setStart(self, val):
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val = self._clamp(val)
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if self._start == val:
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return
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self._start = val
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@ -76,6 +86,7 @@ class ScanWidget(QtWidgets.QWidget):
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self.startChanged.emit(val)
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def setStop(self, val):
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val = self._clamp(val)
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if self._stop == val:
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return
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self._stop = val
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@ -89,6 +100,31 @@ class ScanWidget(QtWidgets.QWidget):
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self.update()
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self.numChanged.emit(val)
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def setMinimum(self, v):
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self._min = v
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self.setStart(self._start)
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self.setStop(self._stop)
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def setMaximum(self, v):
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self._max = v
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self.setStart(self._start)
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self.setStop(self._stop)
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def setDecimals(self, n):
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# TODO
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# the axis should always use compressed notation is useful
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# do not:
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# self.ticker.precision = n
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pass
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def setSingleStep(self, v):
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# TODO
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# use this (and maybe decimals) to snap to "nice" values when dragging
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pass
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def setSuffix(self, v):
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self.suffix = v
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def viewRange(self):
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center = (self._stop + self._start)/2
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scale = self.width()*(1 - 2*self.zoomMargin)
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@ -207,8 +243,11 @@ class ScanWidget(QtWidgets.QWidget):
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ticks, prefix, labels = self.ticker(self._pixelToAxis(0),
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self._pixelToAxis(self.width()))
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painter.drawText(0, 0, prefix)
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painter.translate(0, lineSpacing)
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rect = QtCore.QRect(0, 0, self.width(), lineSpacing)
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painter.drawText(rect, QtCore.Qt.AlignLeft, prefix)
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painter.drawText(rect, QtCore.Qt.AlignRight, self.suffix)
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painter.translate(0, lineSpacing + ascent)
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for t, l in zip(ticks, labels):
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t = self._axisToPixel(t)
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