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minor bugfixes for scatterplotitem

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This commit is contained in:
Luke Campagnola 2012-05-15 13:31:50 -04:00
parent d0e5caac48
commit 00a885f735
1 changed files with 11 additions and 9 deletions
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20
graphicsItems/ScatterPlotItem.py
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@ -35,7 +35,7 @@ for k, c in coords.items():
def makeSymbolPixmap(size, pen, brush, symbol):
## Render a spot with the given parameters to a pixmap
penPxWidth = np.ceil(pen.width())
penPxWidth = max(np.ceil(pen.width()), 1)
image = QtGui.QImage(size+penPxWidth, size+penPxWidth, QtGui.QImage.Format_ARGB32_Premultiplied)
image.fill(0)
p = QtGui.QPainter(image)
@ -78,7 +78,7 @@ class ScatterPlotItem(GraphicsObject):
"""
prof = debug.Profiler('ScatterPlotItem.__init__', disabled=True)
GraphicsObject.__init__(self)
self.setFlag(self.ItemHasNoContents, True)
#self.setFlag(self.ItemHasNoContents, True)
self.data = np.empty(0, dtype=[('x', float), ('y', float), ('size', float), ('symbol', 'S1'), ('pen', object), ('brush', object), ('item', object), ('data', object)])
self.bounds = [None, None] ## caches data bounds
self._maxSpotWidth = 0 ## maximum size of the scale-variant portion of all spots
@ -355,17 +355,18 @@ class ScatterPlotItem(GraphicsObject):
## keep track of the maximum spot size and pixel size
width = 0
pxWidth = 0
if self.opts['pxMode']:
pxWidth += spot.size()
else:
width += spot.size()
pen = spot.pen()
if pen.isCosmetic():
pxWidth += pen.width() * 2
if self.opts['pxMode']:
pxWidth = spot.size() + pen.width()
else:
width += pen.width() * 2
width = spot.size()
if pen.isCosmetic():
pxWidth += pen.width()
else:
width += pen.width()
self._maxSpotWidth = max(self._maxSpotWidth, width)
self._maxSpotPxWidth = max(self._maxSpotPxWidth, pxWidth)
self.bounds = [None, None]
def clear(self):
@ -388,6 +389,7 @@ class ScatterPlotItem(GraphicsObject):
if frac >= 1.0 and self.bounds[ax] is not None:
return self.bounds[ax]
self.prepareGeometryChange()
if self.data is None or len(self.data) == 0:
return (None, None)