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Merge pull request #476 from campagnola/scatterplot-composition

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Add option to set composition mode for scatterplotitem
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Luke Campagnola 2017-05-01 10:28:12 -07:00 committed by GitHub
commit 8f9094b3bd
1 changed files with 6 additions and 1 deletions
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7
pyqtgraph/graphicsItems/ScatterPlotItem.py
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@ -251,6 +251,7 @@ class ScatterPlotItem(GraphicsObject):
'pxMode': True, 'pxMode': True,
'useCache': True, ## If useCache is False, symbols are re-drawn on every paint. 'useCache': True, ## If useCache is False, symbols are re-drawn on every paint.
'antialias': getConfigOption('antialias'), 'antialias': getConfigOption('antialias'),
'compositionMode': None,
'name': None, 'name': None,
} }
@ -299,6 +300,8 @@ class ScatterPlotItem(GraphicsObject):
*antialias* Whether to draw symbols with antialiasing. Note that if pxMode is True, symbols are *antialias* Whether to draw symbols with antialiasing. Note that if pxMode is True, symbols are
always rendered with antialiasing (since the rendered symbols can be cached, this always rendered with antialiasing (since the rendered symbols can be cached, this
incurs very little performance cost) incurs very little performance cost)
*compositionMode* If specified, this sets the composition mode used when drawing the
scatter plot (see QPainter::CompositionMode in the Qt documentation).
*name* The name of this item. Names are used for automatically *name* The name of this item. Names are used for automatically
generating LegendItem entries and by some exporters. generating LegendItem entries and by some exporters.
====================== =============================================================================================== ====================== ===============================================================================================
@ -730,7 +733,9 @@ class ScatterPlotItem(GraphicsObject):
@debug.warnOnException ## raising an exception here causes crash @debug.warnOnException ## raising an exception here causes crash
def paint(self, p, *args): def paint(self, p, *args):
cmode = self.opts.get('compositionMode', None)
if cmode is not None:
p.setCompositionMode(cmode)
#p.setPen(fn.mkPen('r')) #p.setPen(fn.mkPen('r'))
#p.drawRect(self.boundingRect()) #p.drawRect(self.boundingRect())