/usr/lib/python2.7/dist-packages/pyqtgraph/graphicsItems/FillBetweenItem.py is in python-pyqtgraph 0.9.10-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | from ..Qt import QtGui
from .. import functions as fn
from .PlotDataItem import PlotDataItem
from .PlotCurveItem import PlotCurveItem
class FillBetweenItem(QtGui.QGraphicsPathItem):
"""
GraphicsItem filling the space between two PlotDataItems.
"""
def __init__(self, curve1=None, curve2=None, brush=None):
QtGui.QGraphicsPathItem.__init__(self)
self.curves = None
if curve1 is not None and curve2 is not None:
self.setCurves(curve1, curve2)
elif curve1 is not None or curve2 is not None:
raise Exception("Must specify two curves to fill between.")
if brush is not None:
self.setBrush(fn.mkBrush(brush))
self.updatePath()
def setCurves(self, curve1, curve2):
"""Set the curves to fill between.
Arguments must be instances of PlotDataItem or PlotCurveItem.
Added in version 0.9.9
"""
if self.curves is not None:
for c in self.curves:
try:
c.sigPlotChanged.disconnect(self.curveChanged)
except (TypeError, RuntimeError):
pass
curves = [curve1, curve2]
for c in curves:
if not isinstance(c, PlotDataItem) and not isinstance(c, PlotCurveItem):
raise TypeError("Curves must be PlotDataItem or PlotCurveItem.")
self.curves = curves
curve1.sigPlotChanged.connect(self.curveChanged)
curve2.sigPlotChanged.connect(self.curveChanged)
self.setZValue(min(curve1.zValue(), curve2.zValue())-1)
self.curveChanged()
def setBrush(self, *args, **kwds):
"""Change the fill brush. Acceps the same arguments as pg.mkBrush()"""
QtGui.QGraphicsPathItem.setBrush(self, fn.mkBrush(*args, **kwds))
def curveChanged(self):
self.updatePath()
def updatePath(self):
if self.curves is None:
self.setPath(QtGui.QPainterPath())
return
paths = []
for c in self.curves:
if isinstance(c, PlotDataItem):
paths.append(c.curve.getPath())
elif isinstance(c, PlotCurveItem):
paths.append(c.getPath())
path = QtGui.QPainterPath()
p1 = paths[0].toSubpathPolygons()
p2 = paths[1].toReversed().toSubpathPolygons()
if len(p1) == 0 or len(p2) == 0:
self.setPath(QtGui.QPainterPath())
return
path.addPolygon(p1[0] + p2[0])
self.setPath(path)
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