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#!/usr/bin/env python
#############################################################################
##
# This file is part of Taurus
##
# http://taurus-scada.org
##
# Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
# Taurus is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
##
# Taurus is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
##
# You should have received a copy of the GNU Lesser General Public License
# along with Taurus. If not, see <http://www.gnu.org/licenses/>.
##
#############################################################################
"""Example on using a tpg.TaurusPlotDataItem on a pure pyqtgraph plot"""
if __name__ == "__main__":
import sys
import numpy
from taurus.qt.qtgui.application import TaurusApplication
from taurus_pyqtgraph import TaurusPlotDataItem
import pyqtgraph as pg
app = TaurusApplication()
# a standard pyqtgraph plot_item
w = pg.PlotWidget()
# add legend to the plot, for that we have to give a name to plot items
w.addLegend()
# add a regular data item (non-taurus)
c1 = pg.PlotDataItem(name="pg item", pen="b", fillLevel=0, brush="c")
c1.setData(numpy.linspace(0, 2, 250))
w.addItem(c1)
# add a taurus data item
c2 = TaurusPlotDataItem(name="taurus item", pen="r", symbol="o")
c2.setModel('eval:Quantity(rand(256),"m")')
w.addItem(c2)
w.show()
sys.exit(app.exec_())
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