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PlotItem.addLegend will not try to add more than once

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This commit is contained in:
Luke Campagnola 2017-09-15 09:05:24 -07:00
parent 9d0779cc32
commit ee0ea56695
1 changed files with 9 additions and 2 deletions
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11
pyqtgraph/graphicsItems/PlotItem/PlotItem.py
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@ -602,6 +602,9 @@ class PlotItem(GraphicsWidget):
#item.connect(item, QtCore.SIGNAL('plotChanged'), self.plotChanged)
#item.sigPlotChanged.connect(self.plotChanged)
if self.legend is not None:
self.legend.removeItem(item)
def clear(self):
"""
Remove all items from the ViewBox.
@ -646,9 +649,13 @@ class PlotItem(GraphicsWidget):
Create a new LegendItem and anchor it over the internal ViewBox.
Plots will be automatically displayed in the legend if they
are created with the 'name' argument.
If a LegendItem has already been created using this method, that
item will be returned rather than creating a new one.
"""
self.legend = LegendItem(size, offset)
self.legend.setParentItem(self.vb)
if self.legend is None:
self.legend = LegendItem(size, offset)
self.legend.setParentItem(self.vb)
return self.legend
def scatterPlot(self, *args, **kargs):