def __init__(self, preffix='', suffix='', labels=False, parent=None):
TaurusWidget.__init__(self, parent)
self.preffix = preffix
self.suffix = suffix
self.labels = labels
if preffix or suffix:
self.setWindowTitle('%s ... %s' % (preffix, suffix))
self.setLayout(Qt.QVBoxLayout())
self.bar = Qt.QWidget(self)
self.search = Qt.QLineEdit()
self.button = Qt.QPushButton('Load')
self.connect(self.button, Qt.SIGNAL("pressed()"), self.apply_search)
self.bar.setLayout(Qt.QHBoxLayout())
self.bar.layout().addWidget(self.search)
self.bar.layout().addWidget(self.button)
self.layout().addWidget(self.bar)
self.form = TaurusForm(self)
self.layout().addWidget(self.form)
def pickPlotPoint(self,
pos,
scope=20,
showMarker=True,
targetCurveNames=None,
xlabels=None):
'''Finds the pyxel-wise closest data point to the given position. The
valid search space is constrained by the scope and targetCurveNames
parameters.
:param pos: (Qt.QPoint or Qt.QPolygon) the position around which to look
for a data point. The position should be passed as a
Qt.QPoint (if a Qt.QPolygon is given, the first point of the
polygon is used). The position is expected in pixel units,
with (0,0) being the top-left corner of the plot
canvas.
:param scope: (int) defines the area around the given position to be
considered when searching for data points. A data point is
considered within scope if its manhattan distance to
position (in pixels) is less than the value of the scope
parameter. (default=20)
:param showMarker: (bool) If True, a marker will be put on the picked
data point. (default=True)
:param targetCurveNames: (sequence<str>) the names of the curves to be
searched. If None passed, all curves will be
searched
:return: (tuple<Qt.QPointF,str,int> or tuple<None,None,None>) if a point
was picked within the scope, it returns a tuple containing the
picked point (as a Qt.QPointF), the curve name and the index of
the picked point in the curve data. If no point was found
within the scope, it returns None,None,None
'''
print "pickPlotPoint(...)"
if isinstance(pos, Qt.QPolygon):
pos = pos.first()
scopeRect = Qt.QRect(0, 0, scope, scope)
scopeRect.moveCenter(pos)
mindist = scope
picked = None
pickedCurveName = None
pickedIndex = None
self.curves_lock.acquire()
try:
if targetCurveNames is None:
targetCurveNames = self.curves.keys()
#print '%d targetCurveNames'%len(targetCurveNames)
for name in targetCurveNames:
curve = self.curves.get(name, None)
if curve is None:
#print("Curve '%s' not found"%name)
continue
if not curve.isVisible():
#print("Curve '%s' not visible"%name)
continue
data = curve.data()
#print("Curve '%s' has %d points"%(name,data.size()))
for i in xrange(data.size()):
point = Qt.QPoint(self.transform(curve.xAxis(), data.x(i)),
self.transform(curve.yAxis(), data.y(i)))
if scopeRect.contains(point):
#print( 'Comparing %s,%s vs %s'%(pos,scopeRect,point))
dist = (pos - point).manhattanLength()
if dist < mindist:
mindist = dist
picked = Qt.QPointF(data.x(i), data.y(i))
pickedCurveName = name
pickedIndex = i
pickedAxes = curve.xAxis(), curve.yAxis()
found = True
#if picked: print("Curve '%s' contains %s"%(name,pos))
finally:
self.curves_lock.release()
if picked is None:
print 'pickPlotPoint(%s)> No matching point found for any curve' % pos
return
xlabels = xlabels or []
print("pickPlotPoint(x=%s,y=%s,xlabels=[%s])" %
(picked.x(), picked.y(), len(xlabels)))
if showMarker and picked is not None:
print 'showing pickedMarker'
self._pickedMarker.detach()
self._pickedMarker.setValue(picked)
self._pickedMarker.setAxis(*pickedAxes)
self._pickedMarker.attach(self)
self._pickedCurveName = pickedCurveName
self._pickedMarker.pickedIndex = pickedIndex
self.replot()
label = self._pickedMarker.label()
try:
xi, xl = ([(x[0], x[1])
for x in (xlabels or []) if x[0] <= picked.x()]
or [[-1, None]])[-1]
c = self.curves[pickedCurveName]
#xc = [self.transform(c.xAxis(),x) for x in c.data().xData()]
xc = [x for x in c.data().xData()]
xx = len([x for x in xc if x >= xi and x <= picked.x()])
#print [x[0] for x in xlabels]
#print 'picked point: %s'%picked.x()
#print 'last label %s at %s'%(xl,xi)
#print 'data point are %s'%(xc)
#print 'data points between pick and label: %s'%xx
index = xx
tag = '%s-%02d' % (xl, index)
if xl and '/ip' in pickedCurveName.lower():
try:
tag = PyTango.AttributeProxy(
tag.replace('-', '/VC/IP-') +
'/Controller').read().value
except:
import traceback
print traceback.format_exc()
except:
import traceback
print traceback.format_exc()
index, xl = (-1, None)
tag = ''
if xl:
infotxt = "'%s'[%i]:\n\t (%s,%.2e)" % (
pickedCurveName, pickedIndex, tag, picked.y())
elif self.getXIsTime():
infotxt = "'%s'[%i]:\n\t (x=%s,%.3g)" % (
pickedCurveName, pickedIndex, datetime.fromtimestamp(
picked.x()).ctime(), picked.y())
else:
infotxt = "'%s'[%i]:\n\t (x=%.3g, y=%.3g)" % (
pickedCurveName, pickedIndex, picked.x(), picked.y())
label.setText(infotxt)
print '\t%s' % infotxt
fits = label.textSize().width() < self.size().width()
if fits:
label.setText(infotxt)
self._pickedMarker.setLabel(Qwt5.QwtText(label))
self._pickedMarker.alignLabel()
self.replot()
else:
popup = Qt.QWidget(self, Qt.Qt.Popup)
popup.setLayout(Qt.QVBoxLayout())
popup.layout().addWidget(
Qt.QLabel(infotxt)
) #@todo: make the widget background semitransparent green!
popup.setWindowOpacity(self._pickedMarker.labelOpacity)
popup.show()
popup.move(self.pos().x() - popup.size().width(), self.pos().y())
popup.move(self.pos())
Qt.QTimer.singleShot(5000, popup.hide)
return picked, pickedCurveName, pickedIndex