25 lines
819 B
Python
25 lines
819 B
Python
from ..Qt import QtGui
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from .. import functions as fn
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class FillBetweenItem(QtGui.QGraphicsPathItem):
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"""
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GraphicsItem filling the space between two PlotDataItems.
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"""
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def __init__(self, p1, p2, brush=None):
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QtGui.QGraphicsPathItem.__init__(self)
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self.p1 = p1
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self.p2 = p2
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p1.sigPlotChanged.connect(self.updatePath)
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p2.sigPlotChanged.connect(self.updatePath)
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if brush is not None:
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self.setBrush(fn.mkBrush(brush))
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self.setZValue(min(p1.zValue(), p2.zValue())-1)
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self.updatePath()
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def updatePath(self):
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p1 = self.p1.curve.path
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p2 = self.p2.curve.path
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path = QtGui.QPainterPath()
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path.addPolygon(p1.toSubpathPolygons()[0] + p2.toReversed().toSubpathPolygons()[0])
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self.setPath(path)
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