Hi everyone.
I have a question to ask about PlotItem and its background customization.
My current situation is:
- I have an ImageItem that shows a stream of images
- An overlayed PlotItem with some stats
- An overlayed TextItem with some stats too
What I would like to do is add a sort of opaque background to the PlotItem
and the TextItem to make the graph axes and the writings more readable,
something like half transparent white background.
Is it possible?
Here is a little snippet of my current code in the __init__ method, maybe
it could help
QtCore.QObject.__init__(self)
app = QtGui.QApplication([])
# Create window with GraphicsView widget
win = pg.GraphicsLayoutWidget()
win.show() ## show widget alone in its own window
win.setWindowTitle('Realtime prediction')
# Create ViewBox
self.view = win.addViewBox(enableMouse=False)
self.view.invertY()
self.view.setAspectLocked(True)
# Create image item
self.vis = pg.ImageItem()
self.view.addItem(self.vis)
# Create obstacle histogram
plot = pg.PlotItem() # <- background here
plot.layout.setMinimumWidth(200.0)
plot.layout.setMinimumHeight(150.0)
axesB = plot.getAxis('bottom')
axesB.setTicks([xdict.items()])
axesB.setPen((0, 0, 0))
axesL = plot.getAxis('left')
axesL.setPen((0, 0, 0))
plot.setZValue(10)
plot.setY(320.0)
plot.setX(220.0)
self.view.addItem(plot)
self.barGraphItem = pg.BarGraphItem(x = x, height = self.y, width =
1, brush = (255, 0, 0, 128))
plot.addItem(self.barGraphItem)
self.text = pg.TextItem('Loading...') # <- background here
self.text.setColor((0.5, 0.5, 0.5))
self.view.addItem(self.text)
QtGui.QApplication.instance().exec_()
Thank you in advance for the answers.
Toni.
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