Hi,
I'm writing a program to calculate and display a large number of curves.
These are structured in several groups of the same type. Now I like to
select each curve separately or pressing one button for showing all
respectively another button to hide all curves. How can it be done that the
function 'changes()' is called only once?
Thanks,
Ben
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import pyqtgraph as pg
from PyQt5 import QtCore, QtGui, QtWidgets
import pyqtgraph.parametertree.parameterTypes as pTypes
from pyqtgraph.parametertree import Parameter, ParameterTree, ParameterItem, registerParameterType
app = QtGui.QApplication([])
counter = 0
counter_check_all = 0
counter_uncheck_all = 0
class BoolItems(pTypes.GroupParameter):
def __init__(self, **opts):
opts['type'] = 'bool'
opts['value'] = True
opts['expanded'] = False
pTypes.GroupParameter.__init__(self, **opts)
self.addChild({
'name': 'plotBool_1',
'type': 'bool',
'value': True,
'title': 'Bool 1'
})
self.plotBool_1 = self.param('plotBool_1')
self.addChild({
'name': 'plotBool_2',
'type': 'bool',
'value': True,
'title': 'Bool 2'
})
self.plotBool_2 = self.param('plotBool_2')
self.addChild({
'name': 'plotBool_3',
'type': 'bool',
'value': True,
'title': 'Bool 3'
})
self.plotBool_3 = self.param('plotBool_3')
class SelectBoolItems(pTypes.GroupParameter):
def __init__(self, **opts):
opts['name'] = 'Select Bool items'
opts['type'] = 'bool'
opts['value'] = True
opts['expanded'] = True
pTypes.GroupParameter.__init__(self, **opts)
self.addChild({
'name': 'Check all',
'type': 'action',
})
self.btnShowAll = self.param('Check all')
self.addChild({
'name': 'Uncheck all',
'type': 'action',
})
self.btnHideAll = self.param('Uncheck all')
self.groupItems1 = BoolItems(
name='groupItems1', title='Group items 1')
self.groupItems2 = BoolItems(
name='groupItems2', title='Group items 2')
self.groupItems3 = BoolItems(
name='groupItems3', title='Group items 3')
self.addChildren([
self.btnShowAll,
self.btnHideAll,
self.groupItems1,
self.groupItems2,
self.groupItems3,
])
class BoolGroups(pTypes.GroupParameter):
def __init__(self, **opts):
opts['type'] = 'bool'
opts['value'] = True
opts['expanded'] = True
pTypes.GroupParameter.__init__(self, **opts)
self.pSelectBoolItems = SelectBoolItems()
self.addChildren([self.pSelectBoolItems])
self.pSelectBoolItems.btnShowAll.sigActivated.connect(
self.checkAllBools)
self.pSelectBoolItems.btnHideAll.sigActivated.connect(
self.unCheckAllBools)
def checkAllBools(self):
for plt in self.pSelectBoolItems.groupItems1:
plt.setValue(True)
for plt in self.pSelectBoolItems.groupItems2:
plt.setValue(True)
for plt in self.pSelectBoolItems.groupItems3:
plt.setValue(True)
# for test purposes
global counter_check_all
counter_check_all += 1
print("counter_check_all = ", counter_check_all)
def unCheckAllBools(self):
for plt in self.pSelectBoolItems.groupItems1:
plt.setValue(False)
for plt in self.pSelectBoolItems.groupItems2:
plt.setValue(False)
for plt in self.pSelectBoolItems.groupItems3:
plt.setValue(False)
# for test purposes
global counter_uncheck_all
counter_uncheck_all += 1
print("counter_uncheck_all = ", counter_uncheck_all)
def changes():
# This function may only be called once, regardless of whether
# only one or all values are changed (via checkAllBools/unCheckAllBools).
# for test purposes
global counter
counter += 1
print("counter = ", counter)
pParaTreeTest = BoolGroups(name='boolGroups')
p = Parameter.create(name='myParameter', type='group', children=pParaTreeTest)
p.sigTreeStateChanged.connect(changes)
# Create ParameterTree widget
t = ParameterTree()
t.setParameters(p, showTop=False)
win = QtGui.QWidget()
layout = QtGui.QGridLayout()
win.setLayout(layout)
layout.addWidget(t, 1, 0)
win.show()
win.resize(350, 600)
# Start Qt event loop unless running in interactive mode or using pyside.
if __name__ == '__main__':
import sys
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
QtGui.QApplication.instance().exec_()
